/* roulang page: index */
:root {
            --primary-blue: #1E5A8A;
            --primary-blue-hover: #174a72;
            --primary-blue-light: #2a6da3;
            --accent-gold: #C09A4E;
            --accent-gold-hover: #a8873e;
            --bg-page: #F5F8FB;
            --bg-card: #FFFFFF;
            --bg-soft: #F0F4F8;
            --bg-soft-blue: #EAF0F6;
            --text-primary: #1A2B3D;
            --text-secondary: #526579;
            --text-muted: #7A8B9C;
            --border-color: #DDE6EE;
            --border-color-light: #E2E8F0;
            --shadow-default: 0 4px 14px rgba(30, 58, 90, 0.08);
            --shadow-hover: 0 8px 24px rgba(30, 58, 90, 0.14);
            --radius-card: 14px;
            --radius-button: 8px;
            --radius-badge: 6px;
            --radius-image: 12px;
            --font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', 'WenQuanYi Micro Hei', sans-serif;
            --header-height: 64px;
            --container-max: 1200px;
            --section-padding: 72px;
            --section-padding-mobile: 48px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.4s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-page);
            min-height: 100vh;
            padding-bottom: 120px;
        }

        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--primary-blue-hover);
        }

        a:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--font-family);
            font-size: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.3;
            color: var(--text-primary);
        }

        h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

        h2 {
            font-size: 28px;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        h3 {
            font-size: 21px;
            line-height: 1.35;
            margin-bottom: 8px;
        }

        p {
            margin-bottom: 12px;
            color: var(--text-secondary);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        section {
            padding: var(--section-padding) 0;
        }

        .section-header {
            max-width: 720px;
            margin-bottom: 40px;
        }

        .section-header h2 {
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 16px;
            line-height: 1.8;
        }

        .section-tag {
            display: inline-block;
            background: var(--bg-soft-blue);
            color: var(--primary-blue);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        /* Header / Navigation */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color-light);
            box-shadow: 0 1px 8px rgba(30, 58, 90, 0.05);
            min-height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            min-height: var(--header-height);
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-left {
            justify-content: flex-end;
            flex: 1;
            padding-right: 20px;
        }

        .nav-right {
            justify-content: flex-start;
            flex: 1;
            padding-left: 20px;
        }

        .logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: 0.5px;
            line-height: 1;
        }

        .logo a {
            color: var(--text-primary);
            font-weight: 700;
            font-size: 22px;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo a:hover {
            color: var(--primary-blue);
        }

        .logo-icon {
            width: 28px;
            height: 28px;
            background: var(--primary-blue);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            font-weight: 700;
        }

        .nav-link {
            font-size: 15px;
            color: #33475C;
            padding: 6px 2px;
            position: relative;
            text-decoration: none;
            white-space: nowrap;
            transition: color var(--transition-fast);
            min-height: 44px;
            display: inline-flex;
            align-items: center;
        }

        .nav-link:hover {
            color: var(--primary-blue);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--primary-blue);
            border-radius: 3px;
            transition: width var(--transition-normal);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--primary-blue);
            font-weight: 600;
        }

        .nav-link.active::after {
            width: 100%;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            border-radius: var(--radius-button);
            min-width: 44px;
            min-height: 44px;
            align-items: center;
            justify-content: center;
            background: transparent;
            border: 1px solid var(--border-color-light);
            cursor: pointer;
            transition: all var(--transition-fast);
            z-index: 1001;
        }

        .hamburger:hover {
            background: var(--bg-soft);
            border-color: var(--border-color);
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-normal);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            padding: 20px 24px;
            z-index: 999;
            flex-direction: column;
            max-height: calc(100vh - var(--header-height));
            overflow-y: auto;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-link {
            padding: 12px 0;
            font-size: 16px;
            border-bottom: 1px solid var(--border-color-light);
            min-height: 48px;
        }

        .mobile-menu .nav-link:last-child {
            border-bottom: none;
        }

        .mobile-menu .nav-link.active {
            color: var(--primary-blue);
            font-weight: 600;
        }

        .mobile-menu .nav-link::after {
            display: none;
        }

        /* Hero */
        .hero {
            padding: 96px 0 72px;
            background-image: linear-gradient(180deg, rgba(245, 248, 251, 0.92) 0%, rgba(245, 248, 251, 0.96) 60%, rgba(245, 248, 251, 1) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
        }

        .hero .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .hero-content {
            max-width: 560px;
        }

        .hero-content h1 {
            font-size: 40px;
            margin-bottom: 16px;
        }

        .hero-content .hero-subtitle {
            font-size: 17px;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
            margin-bottom: 24px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-button);
            font-size: 15px;
            font-weight: 500;
            line-height: 1.5;
            min-height: 44px;
            text-decoration: none;
            transition: all var(--transition-fast);
            cursor: pointer;
            border: 1px solid transparent;
            white-space: nowrap;
            justify-content: center;
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--primary-blue);
            color: #fff;
            border-color: var(--primary-blue);
        }

        .btn-primary:hover {
            background: var(--primary-blue-hover);
            border-color: var(--primary-blue-hover);
            color: #fff;
            box-shadow: var(--shadow-default);
        }

        .btn-primary:active {
            background: var(--primary-blue-hover);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
            transform: translateY(1px);
        }

        .btn-gold {
            background: var(--accent-gold);
            color: #fff;
            border-color: var(--accent-gold);
        }

        .btn-gold:hover {
            background: var(--accent-gold-hover);
            border-color: var(--accent-gold-hover);
            color: #fff;
            box-shadow: var(--shadow-default);
        }

        .btn-gold:active {
            background: var(--accent-gold-hover);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
            transform: translateY(1px);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary-blue);
            border: 1px solid var(--primary-blue);
        }

        .btn-outline:hover {
            background: var(--bg-soft-blue);
            border-color: var(--primary-blue);
            color: var(--primary-blue);
        }

        .btn-outline:active {
            background: var(--bg-soft-blue);
            box-shadow: inset 0 2px 4px rgba(30, 58, 90, 0.1);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            min-height: 36px;
            border-radius: 6px;
        }

        .hero-trust {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            align-items: center;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .hero-trust .trust-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .trust-dot {
            width: 6px;
            height: 6px;
            background: var(--accent-gold);
            border-radius: 50%;
            flex-shrink: 0;
        }

        .hero-coupon-wall {
            background: rgba(255, 255, 255, 0.92);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            border: 1px solid var(--border-color-light);
            padding: 28px;
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            position: relative;
        }

        .coupon-wall-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .coupon-wall-title .badge-gold {
            background: var(--accent-gold);
            color: #fff;
            font-size: 12px;
            padding: 2px 10px;
            border-radius: 20px;
            font-weight: 500;
        }

        .main-coupon {
            background: linear-gradient(135deg, #f8fbff 0%, #eef4fa 100%);
            border: 2px dashed var(--accent-gold);
            border-radius: var(--radius-card);
            padding: 24px;
            text-align: center;
            margin-bottom: 16px;
            position: relative;
        }

        .main-coupon .coupon-label {
            font-size: 13px;
            color: var(--accent-gold);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 4px;
        }

        .main-coupon .coupon-value {
            font-size: 42px;
            font-weight: 700;
            color: var(--primary-blue);
            line-height: 1.2;
        }

        .main-coupon .coupon-value span {
            font-size: 20px;
            font-weight: 600;
        }

        .main-coupon .coupon-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        .main-coupon .coupon-code {
            display: inline-block;
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 6px 18px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-top: 12px;
            letter-spacing: 1px;
        }

        .small-coupons {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .small-coupon {
            background: #fff;
            border: 1px solid var(--border-color-light);
            border-radius: 10px;
            padding: 14px;
            text-align: center;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .small-coupon:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-default);
            transform: translateY(-2px);
        }

        .small-coupon .sc-value {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-blue);
        }

        .small-coupon .sc-desc {
            font-size: 12px;
            color: var(--text-secondary);
            margin-top: 2px;
        }

        /* Channel Selling Points */
        .channel-points {
            background: var(--bg-page);
        }

        .points-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: 24px;
            align-items: stretch;
        }

        .point-main {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            padding: 36px 32px;
            transition: all var(--transition-normal);
        }

        .point-main:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .point-main .point-icon {
            width: 48px;
            height: 48px;
            background: var(--bg-soft-blue);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-size: 22px;
            color: var(--primary-blue);
        }

        .point-main h3 {
            font-size: 22px;
            margin-bottom: 8px;
        }

        .point-main p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }

        .point-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary-blue);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast);
        }

        .point-link:hover {
            gap: 10px;
        }

        .point-sub-grid {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .point-sub {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            padding: 24px 20px;
            transition: all var(--transition-normal);
            flex: 1;
        }

        .point-sub:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .point-sub .point-icon {
            width: 36px;
            height: 36px;
            background: var(--bg-soft-blue);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 10px;
            font-size: 18px;
            color: var(--primary-blue);
        }

        .point-sub h3 {
            font-size: 18px;
            margin-bottom: 4px;
        }

        .point-sub p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* Brand Intro */
        .brand-intro {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color-light);
            border-bottom: 1px solid var(--border-color-light);
        }

        .brand-intro .container {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .brand-intro-text h2 {
            font-size: 26px;
            margin-bottom: 16px;
        }

        .brand-intro-text p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 10px;
            max-width: 620px;
        }

        .brand-intro-img {
            border-radius: var(--radius-image);
            overflow: hidden;
            box-shadow: var(--shadow-default);
            background: var(--bg-soft-blue);
        }

        .brand-intro-img img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            border-radius: var(--radius-image);
        }

        /* Deep Content */
        .deep-content {
            background: var(--bg-page);
        }

        .deep-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            margin-bottom: 48px;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            padding: 32px;
            transition: all var(--transition-normal);
        }

        .deep-block:hover {
            box-shadow: var(--shadow-hover);
        }

        .deep-block:last-child {
            margin-bottom: 0;
        }

        .deep-block .deep-img {
            border-radius: var(--radius-image);
            overflow: hidden;
            background: var(--bg-soft-blue);
        }

        .deep-block .deep-img img {
            width: 100%;
            height: 240px;
            object-fit: cover;
            border-radius: var(--radius-image);
        }

        .deep-text h3 {
            font-size: 22px;
            margin-bottom: 10px;
        }

        .deep-text p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }

        .deep-text .deep-tag {
            display: inline-block;
            background: var(--bg-soft-blue);
            color: var(--primary-blue);
            font-size: 12px;
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }

        /* Data Bar */
        .data-bar {
            background: var(--bg-soft-blue);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            border: 1px solid var(--border-color-light);
        }

        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .data-item .data-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary-blue);
            line-height: 1.2;
        }

        .data-item .data-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* Social Proof */
        .social-proof {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color-light);
            border-bottom: 1px solid var(--border-color-light);
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 24px;
        }

        .testimonial-card {
            background: var(--bg-soft);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-default);
            border: 1px solid var(--border-color-light);
            position: relative;
            transition: all var(--transition-normal);
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .testimonial-quote {
            font-size: 48px;
            color: rgba(192, 154, 78, 0.35);
            font-weight: 700;
            line-height: 1;
            margin-bottom: 8px;
            font-family: serif;
        }

        .testimonial-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 10px;
        }

        .testimonial-author {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-primary);
        }

        /* Lead Form */
        .lead-form {
            background: var(--bg-page);
        }

        .form-wrap {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
            align-items: start;
        }

        .form-info-text h2 {
            font-size: 24px;
            margin-bottom: 12px;
        }

        .form-info-text p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        .form-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            padding: 32px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-button);
            font-size: 15px;
            transition: all var(--transition-fast);
            background: #fff;
            color: var(--text-primary);
            line-height: 1.5;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 2px rgba(30, 90, 138, 0.15);
        }

        .form-group input.error {
            border-color: #C0392B;
        }

        .form-error {
            font-size: 13px;
            color: #C0392B;
            margin-top: 4px;
            display: none;
        }

        .form-error.visible {
            display: block;
        }

        .form-submit-row {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 20px;
            flex-wrap: wrap;
        }

        .form-note {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Beginner Guide */
        .beginner-guide {
            background: var(--bg-soft-blue);
            border-radius: var(--radius-card);
            padding: 40px 32px;
            border: 1px solid var(--border-color-light);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 24px;
        }

        .step-item {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 20px;
            text-align: center;
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            transition: all var(--transition-normal);
        }

        .step-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .step-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 8px;
        }

        .step-item h3 {
            font-size: 16px;
            margin-bottom: 4px;
        }

        .step-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* News */
        .news-section {
            background: var(--bg-page);
        }

        .news-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: 32px;
            align-items: start;
        }

        .news-list .news-item {
            display: flex;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-color-light);
            transition: all var(--transition-fast);
            align-items: flex-start;
        }

        .news-item:first-child {
            padding-top: 0;
        }

        .news-item:last-child {
            border-bottom: none;
        }

        .news-item:hover .news-title {
            color: var(--primary-blue);
        }

        .news-date {
            background: var(--bg-soft-blue);
            border-radius: 8px;
            padding: 8px 10px;
            font-size: 12px;
            color: var(--primary-blue);
            font-weight: 500;
            text-align: center;
            flex-shrink: 0;
            min-width: 70px;
            line-height: 1.4;
        }

        .news-content {
            flex: 1;
        }

        .news-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
            transition: color var(--transition-fast);
            display: block;
        }

        .news-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 6px;
        }

        .news-more {
            font-size: 13px;
            font-weight: 500;
            color: var(--primary-blue);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }

        .news-more:hover {
            gap: 8px;
        }

        .news-sidebar {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            padding: 24px;
        }

        .news-sidebar h3 {
            font-size: 17px;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--border-color-light);
        }

        .sidebar-link-item {
            display: block;
            padding: 10px 0;
            font-size: 14px;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-color-light);
            transition: all var(--transition-fast);
            line-height: 1.5;
        }

        .sidebar-link-item:last-child {
            border-bottom: none;
        }

        .sidebar-link-item:hover {
            color: var(--primary-blue);
            padding-left: 6px;
        }

        /* Version Updates */
        .version-updates {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color-light);
            border-bottom: 1px solid var(--border-color-light);
        }

        .changelog-list {
            max-width: 760px;
        }

        .changelog-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-color-light);
            align-items: flex-start;
        }

        .changelog-item:last-child {
            border-bottom: none;
        }

        .changelog-version {
            background: var(--primary-blue);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            white-space: nowrap;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .changelog-content h3 {
            font-size: 16px;
            margin-bottom: 4px;
        }

        .changelog-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Platform Guarantee */
        .platform-guarantee {
            background: var(--bg-page);
        }

        .badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 20px;
        }

        .guarantee-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-card);
            border: 1px solid var(--border-color-light);
            border-radius: 20px;
            padding: 8px 20px;
            font-size: 14px;
            color: var(--text-primary);
            box-shadow: var(--shadow-default);
            transition: all var(--transition-fast);
        }

        .guarantee-badge:hover {
            border-color: var(--primary-blue);
            box-shadow: var(--shadow-hover);
        }

        .guarantee-badge .gb-dot {
            width: 8px;
            height: 8px;
            background: var(--accent-gold);
            border-radius: 50%;
        }

        /* Limited Entry */
        .limited-entry {
            background: var(--bg-page);
        }

        .countdown-card {
            background: linear-gradient(135deg, #f8fbff 0%, #eef4fa 100%);
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-card);
            padding: 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-default);
        }

        .countdown-left {
            flex: 1;
            min-width: 240px;
        }

        .countdown-left h2 {
            font-size: 22px;
            margin-bottom: 6px;
        }

        .countdown-left p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        .countdown-timer {
            display: flex;
            gap: 12px;
            align-items: center;
            flex-shrink: 0;
        }

        .timer-box {
            background: #fff;
            border-radius: 10px;
            padding: 10px 16px;
            text-align: center;
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            min-width: 64px;
        }

        .timer-box .timer-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-blue);
            line-height: 1.1;
        }

        .timer-box .timer-label {
            font-size: 11px;
            color: var(--text-muted);
        }

        .countdown-cta {
            flex-shrink: 0;
        }

        /* Privacy Notice */
        .privacy-notice {
            background: var(--bg-soft);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            border: 1px solid var(--border-color-light);
        }

        .privacy-notice h3 {
            font-size: 17px;
            margin-bottom: 10px;
        }

        .privacy-notice p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 6px;
            max-width: 800px;
        }

        .privacy-notice .privacy-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 10px;
        }

        .privacy-notice .privacy-links a {
            font-size: 13px;
            color: var(--primary-blue);
        }

        /* Bottom Fixed CTA */
        .floating-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 900;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border-top: 1px solid var(--border-color-light);
            box-shadow: 0 -4px 14px rgba(30, 58, 90, 0.06);
            min-height: 64px;
            display: flex;
            align-items: center;
        }

        .floating-cta .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            max-width: var(--container-max);
            padding: 0 24px;
        }

        .floating-text {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-primary);
        }

        .floating-actions {
            display: flex;
            gap: 12px;
            align-items: center;
            flex-shrink: 0;
        }

        /* Footer */
        footer.site-footer {
            background: #16283C;
            color: #B0BECB;
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 13px;
            color: #B0BECB;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: #B0BECB;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #CFE3F5;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: #8fa3b5;
        }

        .footer-bottom .legal-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom .legal-links a {
            font-size: 12px;
            color: #8fa3b5;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-bottom .legal-links a:hover {
            color: #CFE3F5;
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .nav-left,
            .nav-right {
                gap: 16px;
            }

            .hero .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-content {
                max-width: 100%;
            }

            .points-grid {
                grid-template-columns: 1fr;
            }

            .brand-intro .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .deep-block {
                grid-template-columns: 1fr;
                gap: 20px;
                padding: 24px;
            }

            .deep-block .deep-img img {
                height: 180px;
            }

            .form-wrap {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .news-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .testimonial-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            section {
                padding: var(--section-padding-mobile) 0;
            }

            .hero {
                padding: 72px 0 56px;
            }

            h1 {
                font-size: 32px;
            }

            .hero-content h1 {
                font-size: 32px;
            }
        }

        @media (max-width: 767px) {
            .hamburger {
                display: flex;
            }

            .nav-left,
            .nav-right {
                display: none;
            }

            .logo {
                position: relative;
                left: auto;
                transform: none;
                margin: 0 auto;
            }

            .header-inner {
                justify-content: space-between;
                padding: 0 16px;
            }

            .mobile-menu .nav-link {
                font-size: 15px;
            }

            .hero {
                padding: 56px 0 48px;
            }

            .hero-content h1 {
                font-size: 28px;
            }

            h1 {
                font-size: 28px;
            }

            h2 {
                font-size: 22px;
            }

            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

            .hero-trust {
                flex-direction: column;
                gap: 8px;
                align-items: flex-start;
            }

            .small-coupons {
                grid-template-columns: 1fr;
            }

            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .data-item .data-number {
                font-size: 28px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
            }

            .countdown-card {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }

            .countdown-left {
                text-align: center;
            }

            .floating-cta {
                min-height: 56px;
            }

            .floating-cta .container {
                flex-direction: column;
                padding: 8px 16px;
                gap: 6px;
            }

            .floating-text {
                font-size: 13px;
                text-align: center;
            }

            .floating-actions {
                width: 100%;
                justify-content: center;
            }

            .floating-actions .btn {
                padding: 6px 16px;
                font-size: 13px;
                min-height: 36px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .container {
                padding: 0 16px;
            }

            .news-item {
                flex-direction: column;
                gap: 8px;
            }

            .news-date {
                align-self: flex-start;
            }

            .changelog-item {
                flex-direction: column;
                gap: 8px;
            }

            .changelog-version {
                align-self: flex-start;
            }

            .badge-row {
                gap: 8px;
            }

            .guarantee-badge {
                font-size: 12px;
                padding: 6px 14px;
            }
        }

        @media (max-width: 520px) {
            h1 {
                font-size: 24px;
            }

            .hero-content h1 {
                font-size: 24px;
            }

            h2 {
                font-size: 20px;
            }

            .btn {
                font-size: 14px;
                padding: 8px 16px;
                min-height: 40px;
            }

            .data-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .small-coupon .sc-value {
                font-size: 18px;
            }

            .countdown-timer {
                flex-wrap: wrap;
                justify-content: center;
            }

            .timer-box {
                min-width: 52px;
                padding: 8px 10px;
            }

            .timer-box .timer-num {
                font-size: 22px;
            }
        }

/* roulang page: category3 */
:root {
  --primary-blue: #1E5A8A;
  --primary-blue-hover: #174a72;
  --primary-blue-light: #2a6da3;
  --accent-gold: #C09A4E;
  --accent-gold-hover: #a8873e;
  --bg-page: #F5F8FB;
  --bg-card: #FFFFFF;
  --bg-soft: #F0F4F8;
  --bg-soft-blue: #EAF0F6;
  --text-primary: #1A2B3D;
  --text-secondary: #526579;
  --text-muted: #7A8B9C;
  --border-color: #DDE6EE;
  --border-color-light: #E2E8F0;
  --shadow-default: 0 4px 14px rgba(30, 58, 90, 0.08);
  --shadow-hover: 0 8px 24px rgba(30, 58, 90, 0.14);
  --radius-card: 14px;
  --radius-button: 8px;
  --radius-badge: 6px;
  --radius-image: 12px;
  --font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', 'WenQuanYi Micro Hei', sans-serif;
  --header-height: 64px;
  --container-max: 1200px;
  --section-padding: 72px;
  --section-padding-mobile: 48px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.4s ease;
}

/* roulang page: security */
html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  font-family: var(--font-family);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--text-primary);
  background-color: var(--bg-page);
  min-height: 100vh;
  margin: 0;
  padding-bottom: 0;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--primary-blue-hover);
}
a:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
  border-radius: 2px;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
button, input, select, textarea {
  font-family: var(--font-family);
  font-size: inherit;
  color: inherit;
}
button {
  cursor: pointer;
  border: none;
  background: none;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}
section {
  padding: var(--section-padding) 0;
}
.section-header {
  max-width: 720px;
  margin-bottom: 40px;
}
.section-header h2 {
  margin-bottom: 12px;
  font-size: 28px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}
.section-header p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
}
.section-tag {
  display: inline-block;
  background: var(--bg-soft-blue);
  color: var(--primary-blue);
  font-size: 13px;
  font-weight: 500;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
  letter-spacing: 0.3px;
}

/* Header / Navigation */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color-light);
  box-shadow: 0 1px 8px rgba(30, 58, 90, 0.05);
  min-height: var(--header-height);
  display: flex;
  align-items: center;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  min-height: var(--header-height);
}
.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-left {
  justify-content: flex-end;
  flex: 1;
  padding-right: 20px;
}
.nav-right {
  justify-content: flex-start;
  flex: 1;
  padding-left: 20px;
}
.logo {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  letter-spacing: 0.5px;
  line-height: 1;
}
.logo a {
  color: var(--text-primary);
  font-weight: 700;
  font-size: 22px;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo a:hover {
  color: var(--primary-blue);
}
.logo-icon {
  width: 28px;
  height: 28px;
  background: var(--primary-blue);
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
}
.nav-link {
  font-size: 15px;
  color: #33475C;
  padding: 6px 2px;
  position: relative;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-fast);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.nav-link:hover {
  color: var(--primary-blue);
}
.nav-link.active {
  color: var(--primary-blue);
  font-weight: 600;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-blue);
  border-radius: 3px 3px 0 0;
}
.nav-link:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
  border-radius: 2px;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  position: absolute;
  left: 16px;
  top: 10px;
  z-index: 1010;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  border-radius: 6px;
  transition: background var(--transition-fast);
}
.hamburger:hover {
  background: var(--bg-soft);
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--transition-normal);
}
.hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.mobile-menu {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border-color-light);
  box-shadow: 0 8px 20px rgba(30, 58, 90, 0.12);
  padding: 16px 24px;
  flex-direction: column;
  gap: 4px;
  z-index: 1005;
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu .nav-link {
  padding: 12px 4px;
  font-size: 16px;
  border-bottom: 1px solid var(--border-color-light);
  min-height: 48px;
}
.mobile-menu .nav-link:last-child {
  border-bottom: none;
}
.mobile-menu .nav-link.active::after {
  display: none;
}

/* Banner */
.security-banner {
  position: relative;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  min-height: 40vh;
  display: flex;
  align-items: center;
  padding: 64px 0;
}
.security-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(245, 248, 251, 0.92) 0%, rgba(245, 248, 251, 0.78) 100%);
  z-index: 0;
}
.security-banner .container {
  position: relative;
  z-index: 1;
}
.security-banner h1 {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.security-banner .banner-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.8;
  margin-bottom: 24px;
}
.security-banner .banner-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  min-height: 48px;
  border-radius: var(--radius-button);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.btn:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--primary-blue);
  color: #fff;
  border: 1px solid var(--primary-blue);
}
.btn-primary:hover {
  background: var(--primary-blue-hover);
  border-color: var(--primary-blue-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(30, 58, 90, 0.2);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}
.btn-outline {
  background: transparent;
  color: var(--primary-blue);
  border: 1px solid var(--primary-blue);
}
.btn-outline:hover {
  background: var(--bg-soft-blue);
  color: var(--primary-blue-hover);
  border-color: var(--primary-blue-hover);
}
.btn-gold {
  background: var(--accent-gold);
  color: #fff;
  border: 1px solid var(--accent-gold);
}
.btn-gold:hover {
  background: var(--accent-gold-hover);
  border-color: var(--accent-gold-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(192, 154, 78, 0.3);
}

/* Intro Section */
.security-intro {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color-light);
}
.security-intro .intro-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.security-intro .intro-text h2 {
  font-size: 26px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
  line-height: 1.3;
}
.security-intro .intro-text p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.85;
  margin-bottom: 16px;
}
.security-intro .intro-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}
.security-intro .stat-item {
  background: var(--bg-soft);
  border-radius: var(--radius-card);
  padding: 20px;
  text-align: center;
  border: 1px solid var(--border-color-light);
  transition: all var(--transition-normal);
}
.security-intro .stat-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.security-intro .stat-number {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-blue);
  line-height: 1.2;
  margin-bottom: 4px;
}
.security-intro .stat-label {
  font-size: 13px;
  color: var(--text-muted);
}
.security-intro .intro-image {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-default);
  background: var(--bg-soft-blue);
}
.security-intro .intro-image img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  border-radius: var(--radius-card);
}

/* Feature List */
.feature-list-section {
  background: var(--bg-page);
}
.feature-list-section .feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  border: 1px solid var(--border-color-light);
  box-shadow: var(--shadow-default);
  overflow: hidden;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--border-color);
}
.feature-card .feature-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  background: var(--bg-soft-blue);
}
.feature-card .feature-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.feature-card .feature-tag {
  font-size: 12px;
  color: var(--primary-blue);
  background: var(--bg-soft-blue);
  padding: 3px 10px;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: 10px;
  font-weight: 500;
  width: fit-content;
}
.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.35;
}
.feature-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 16px;
  flex: 1;
}
.feature-card .feature-link {
  font-size: 14px;
  color: var(--primary-blue);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all var(--transition-fast);
}
.feature-card .feature-link:hover {
  gap: 8px;
  color: var(--primary-blue-hover);
}

/* Deep Dive */
.deep-dive {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color-light);
  border-bottom: 1px solid var(--border-color-light);
}
.deep-dive .deep-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.deep-dive .deep-image {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-default);
  background: var(--bg-soft-blue);
}
.deep-dive .deep-image img {
  width: 100%;
  height: auto;
  min-height: 380px;
  object-fit: cover;
  border-radius: var(--radius-card);
}
.deep-dive .deep-content h2 {
  font-size: 26px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}
.deep-dive .deep-content p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.85;
  margin-bottom: 16px;
}
.deep-dive .deep-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.deep-dive .deep-tags span {
  background: var(--bg-soft);
  color: var(--text-secondary);
  font-size: 13px;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--border-color-light);
}

/* Process */
.process-section {
  background: var(--bg-page);
}
.process-section .process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.process-step {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  border: 1px solid var(--border-color-light);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-default);
}
.process-step:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.process-step .step-num {
  width: 40px;
  height: 40px;
  background: var(--primary-blue);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  margin: 0 auto 14px;
}
.process-step h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.process-step p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* FAQ */
.faq-section {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color-light);
  border-bottom: 1px solid var(--border-color-light);
}
.faq-item {
  border-bottom: 1px solid var(--border-color-light);
  padding: 0;
}
.faq-item:last-child {
  border-bottom: none;
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 20px 4px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 17px;
  font-weight: 500;
  color: var(--text-primary);
  transition: color var(--transition-fast);
  min-height: 48px;
  position: relative;
}
.faq-question:hover {
  color: var(--primary-blue);
}
.faq-question:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
  border-radius: 4px;
}
.faq-icon {
  font-size: 20px;
  color: var(--primary-blue);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
  line-height: 1;
}
.faq-question.open .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal), padding var(--transition-normal);
  padding: 0 4px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}
.faq-answer.open {
  max-height: 300px;
  padding: 0 4px 20px;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-hover) 100%);
  padding: 56px 0;
}
.cta-section .cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-section .cta-text h2 {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  line-height: 1.3;
}
.cta-section .cta-text p {
  color: #CFE3F5;
  font-size: 16px;
  line-height: 1.7;
}
.cta-section .cta-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-section .btn-gold {
  background: var(--accent-gold);
  color: #fff;
  border: 1px solid var(--accent-gold);
}
.cta-section .btn-gold:hover {
  background: var(--accent-gold-hover);
  border-color: var(--accent-gold-hover);
}
.cta-section .btn-white-outline {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.5);
}
.cta-section .btn-white-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  color: #fff;
}

/* Footer */
.site-footer {
  background: #16283C;
  color: #B0BECB;
  padding: 56px 0 24px;
  font-size: 14px;
}
.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.site-footer .footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.site-footer .footer-brand p {
  color: #8FA0B0;
  font-size: 13px;
  line-height: 1.7;
  max-width: 400px;
}
.site-footer .footer-col h4 {
  color: #CFE3F5;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}
.site-footer .footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer .footer-col ul li {
  margin-bottom: 10px;
}
.site-footer .footer-col ul li a {
  color: #B0BECB;
  font-size: 13px;
  text-decoration: none;
  transition: color var(--transition-fast);
}
.site-footer .footer-col ul li a:hover {
  color: #fff;
  text-decoration: underline;
}
.site-footer .footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
  color: #8FA0B0;
}
.site-footer .legal-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}
.site-footer .legal-links a {
  color: #B0BECB;
  font-size: 12px;
  text-decoration: none;
  transition: color var(--transition-fast);
}
.site-footer .legal-links a:hover {
  color: #fff;
  text-decoration: underline;
}
.site-footer .legal-links span {
  color: #8FA0B0;
  font-size: 12px;
}

/* Responsive */
@media (max-width: 1023px) {
  .nav-left, .nav-right {
    gap: 18px;
  }
  .nav-left {
    padding-right: 12px;
  }
  .nav-right {
    padding-left: 12px;
  }
  .nav-link {
    font-size: 14px;
  }
  .logo a {
    font-size: 20px;
  }
  .logo-icon {
    width: 24px;
    height: 24px;
    font-size: 12px;
  }
  .security-intro .intro-wrap {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .deep-dive .deep-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .feature-list-section .feature-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .process-section .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .site-footer .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  section {
    padding: 56px 0;
  }
}

@media (max-width: 767px) {
  body {
    font-size: 15px;
  }
  .header-inner {
    padding: 0 16px;
  }
  .nav-left, .nav-right {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .logo {
    position: static;
    transform: none;
    margin: 0 auto;
  }
  .header-inner {
    justify-content: center;
  }
  .mobile-menu.open {
    display: flex;
  }
  .security-banner {
    min-height: 32vh;
    padding: 40px 0;
  }
  .security-banner h1 {
    font-size: 28px;
  }
  .security-banner .banner-desc {
    font-size: 15px;
  }
  .security-banner .banner-actions {
    flex-direction: column;
    gap: 10px;
  }
  .btn {
    width: 100%;
    justify-content: center;
    padding: 12px 20px;
    font-size: 14px;
  }
  .feature-list-section .feature-grid {
    grid-template-columns: 1fr;
  }
  .feature-card .feature-img {
    height: 180px;
  }
  .process-section .process-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .security-intro .intro-stats {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .security-intro .stat-number {
    font-size: 22px;
  }
  .cta-section .cta-inner {
    flex-direction: column;
    text-align: center;
    gap: 24px;
  }
  .cta-section .cta-actions {
    width: 100%;
    flex-direction: column;
    gap: 10px;
  }
  .cta-section .cta-actions .btn {
    width: 100%;
    justify-content: center;
  }
  .site-footer .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .site-footer .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }
  .site-footer .legal-links {
    justify-content: center;
  }
  .section-header h2 {
    font-size: 22px;
  }
  .section-header p {
    font-size: 15px;
  }
  section {
    padding: 48px 0;
  }
  .container {
    padding: 0 16px;
  }
  .faq-question {
    font-size: 16px;
  }
  .deep-dive .deep-image img {
    min-height: 260px;
  }
  .feature-card .feature-body {
    padding: 20px;
  }
  .feature-card h3 {
    font-size: 18px;
  }
}
@media (max-width: 400px) {
  .security-intro .intro-stats {
    grid-template-columns: 1fr;
  }
  .process-section .process-grid {
    grid-template-columns: 1fr;
  }
  .security-banner h1 {
    font-size: 24px;
  }
}

/* roulang page: category2 */
:root {
  --primary-blue: #1E5A8A;
  --primary-blue-hover: #174a72;
  --primary-blue-light: #2a6da3;
  --accent-gold: #C09A4E;
  --accent-gold-hover: #a8873e;
  --bg-page: #F5F8FB;
  --bg-card: #FFFFFF;
  --bg-soft: #F0F4F8;
  --bg-soft-blue: #EAF0F6;
  --text-primary: #1A2B3D;
  --text-secondary: #526579;
  --text-muted: #7A8B9C;
  --border-color: #DDE6EE;
  --border-color-light: #E2E8F0;
  --shadow-default: 0 4px 14px rgba(30, 58, 90, 0.08);
  --shadow-hover: 0 8px 24px rgba(30, 58, 90, 0.14);
  --radius-card: 14px;
  --radius-button: 8px;
  --radius-badge: 6px;
  --radius-image: 12px;
  --font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', 'WenQuanYi Micro Hei', sans-serif;
  --header-height: 64px;
  --container-max: 1200px;
  --section-padding: 72px;
  --section-padding-mobile: 48px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.4s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--text-primary);
  background-color: var(--bg-page);
  min-height: 100vh;
  padding-bottom: 120px;
}

a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-blue-hover);
}

a:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
  border-radius: 2px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button,
input,
select,
textarea {
  font-family: var(--font-family);
  font-size: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: var(--section-padding) 0;
}

.section-header {
  max-width: 720px;
  margin-bottom: 40px;
}

.section-header h2 {
  margin-bottom: 12px;
}

.section-header p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.section-tag {
  display: inline-block;
  background: var(--bg-soft-blue);
  color: var(--primary-blue);
  font-size: 13px;
  font-weight: 500;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
  letter-spacing: 0.3px;
}

h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.5px;
}

h2 {
  font-size: 28px;
  letter-spacing: 0.2px;
}

h3 {
  font-size: 21px;
  line-height: 1.35;
}

h4 {
  font-size: 18px;
  line-height: 1.4;
}

/* Header / Navigation */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color-light);
  box-shadow: 0 1px 8px rgba(30, 58, 90, 0.05);
  min-height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  min-height: var(--header-height);
}

.nav-left,
.nav-right {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-left {
  justify-content: flex-end;
  flex: 1;
  padding-right: 18px;
}

.nav-right {
  justify-content: flex-start;
  flex: 1;
  padding-left: 18px;
}

.logo {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-size: 21px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  letter-spacing: 0.4px;
  line-height: 1;
}

.logo a {
  color: var(--text-primary);
  font-weight: 700;
  font-size: 21px;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo a:hover {
  color: var(--primary-blue);
}

.logo-icon {
  width: 28px;
  height: 28px;
  background: var(--primary-blue);
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
}

.nav-link {
  font-size: 15px;
  color: #33475C;
  padding: 6px 2px;
  position: relative;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-fast);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav-link:hover {
  color: var(--primary-blue);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--primary-blue);
  border-radius: 2px;
  transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link.active {
  color: var(--primary-blue);
  font-weight: 600;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: transparent;
  border: 1px solid var(--border-color-light);
  transition: background var(--transition-fast);
}

.hamburger:hover {
  background: var(--bg-soft);
}

.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border-color-light);
  box-shadow: 0 8px 24px rgba(30, 58, 90, 0.12);
  padding: 16px 24px;
  flex-direction: column;
  gap: 4px;
  max-height: calc(100vh - var(--header-height));
  overflow-y: auto;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu .nav-link {
  padding: 12px 8px;
  font-size: 16px;
  border-bottom: 1px solid var(--border-color-light);
  min-height: 48px;
}

.mobile-menu .nav-link:last-child {
  border-bottom: none;
}

.mobile-menu .nav-link::after {
  display: none;
}

/* Banner */
.category-banner {
  position: relative;
  padding: 72px 0;
  background-image: linear-gradient(180deg, rgba(245, 248, 251, 0.88) 0%, rgba(231, 240, 248, 0.95) 100%), url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border-color-light);
  overflow: hidden;
}

.category-banner .banner-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.category-banner .banner-text {
  max-width: 620px;
}

.category-banner .banner-text h1 {
  margin-bottom: 16px;
  font-size: 36px;
}

.category-banner .banner-text p {
  font-size: 17px;
  line-height: 1.85;
  color: var(--text-secondary);
  max-width: 560px;
}

.category-banner .banner-side-img {
  flex-shrink: 0;
  width: 280px;
  height: 170px;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-default);
  background: var(--bg-soft-blue);
  display: flex;
  align-items: center;
  justify-content: center;
}

.category-banner .banner-side-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius-button);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  min-height: 44px;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary-blue);
  color: #fff;
  border: 1px solid var(--primary-blue);
}

.btn-primary:hover {
  background: var(--primary-blue-hover);
  border-color: var(--primary-blue-hover);
  color: #fff;
  box-shadow: var(--shadow-default);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}

.btn-primary:active {
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
  background: transparent;
  color: var(--primary-blue);
  border: 1px solid var(--primary-blue);
}

.btn-secondary:hover {
  background: var(--bg-soft-blue);
  color: var(--primary-blue-hover);
  border-color: var(--primary-blue-hover);
}

.btn-secondary:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}

.btn-gold {
  background: var(--accent-gold);
  color: #fff;
  border: 1px solid var(--accent-gold);
}

.btn-gold:hover {
  background: var(--accent-gold-hover);
  border-color: var(--accent-gold-hover);
  color: #fff;
  box-shadow: var(--shadow-default);
}

.btn-gold:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--primary-blue);
}

.breadcrumb .separator {
  color: var(--text-muted);
  user-select: none;
}

.breadcrumb .current {
  color: var(--primary-blue);
  font-weight: 500;
}

/* Game intro section */
.game-intro-section {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color-light);
}

.game-intro-section .intro-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  align-items: flex-start;
}

.game-intro-section .intro-text {
  flex: 1 1 500px;
}

.game-intro-section .intro-text p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.game-intro-section .intro-stats {
  flex: 0 0 260px;
  background: var(--bg-card);
  border: 1px solid var(--border-color-light);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-default);
}

.game-intro-section .intro-stats .stat-item {
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-color-light);
}

.game-intro-section .intro-stats .stat-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.game-intro-section .intro-stats .stat-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-blue);
  line-height: 1.2;
}

.game-intro-section .intro-stats .stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Featured game cards */
.featured-section {
  background: var(--bg-page);
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.featured-card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border-color-light);
  box-shadow: var(--shadow-default);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.featured-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.featured-card .card-img {
  height: 170px;
  overflow: hidden;
  background: var(--bg-soft-blue);
}

.featured-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.featured-card:hover .card-img img {
  transform: scale(1.04);
}

.featured-card .card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.featured-card .card-body h3 {
  margin-bottom: 6px;
}

.featured-card .card-body .game-tag {
  display: inline-block;
  background: var(--bg-soft-blue);
  color: var(--primary-blue);
  font-size: 12px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 14px;
  margin-right: 6px;
  margin-bottom: 8px;
}

.featured-card .card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
  flex: 1;
}

.featured-card .card-body .card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary-blue);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.featured-card .card-body .card-link:hover {
  color: var(--primary-blue-hover);
  gap: 8px;
}

/* Game category list */
.category-list-section {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color-light);
  border-bottom: 1px solid var(--border-color-light);
}

.game-category-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.game-category-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: #fff;
  border: 1px solid var(--border-color-light);
  border-radius: 12px;
  padding: 18px 22px;
  transition: box-shadow var(--transition-normal), border-color var(--transition-fast);
}

.game-category-item:hover {
  box-shadow: var(--shadow-default);
  border-color: var(--primary-blue);
}

.game-category-item .item-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--bg-soft-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-blue);
  flex-shrink: 0;
}

.game-category-item .item-info {
  flex: 1;
}

.game-category-item .item-info h4 {
  font-size: 17px;
  margin-bottom: 2px;
}

.game-category-item .item-info p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.game-category-item .item-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary-blue);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition-fast);
}

.game-category-item .item-link:hover {
  color: var(--primary-blue-hover);
  gap: 8px;
}

/* Deep content block */
.deep-content-section {
  background: var(--bg-page);
}

.deep-content-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  align-items: center;
}

.deep-content-grid .deep-text {
  flex: 1 1 460px;
}

.deep-content-grid .deep-text p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.deep-content-grid .deep-text .highlight-list {
  list-style: none;
  padding: 0;
  margin: 16px 0;
}

.deep-content-grid .deep-text .highlight-list li {
  padding: 8px 0;
  font-size: 15px;
  color: var(--text-primary);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border-bottom: 1px solid var(--border-color-light);
}

.deep-content-grid .deep-text .highlight-list li:last-child {
  border-bottom: none;
}

.deep-content-grid .deep-text .highlight-list li::before {
  content: '✓';
  color: var(--primary-blue);
  font-weight: 700;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  background: var(--bg-soft-blue);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
}

.deep-content-grid .deep-img {
  flex: 0 0 400px;
  max-width: 400px;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-default);
  background: var(--bg-soft-blue);
}

.deep-content-grid .deep-img img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

/* FAQ */
.faq-section {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color-light);
  border-bottom: 1px solid var(--border-color-light);
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-color-light);
  padding: 18px 8px;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  text-align: left;
  font-size: 17px;
  font-weight: 500;
  color: var(--text-primary);
  padding: 8px 0;
  gap: 16px;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq-question:hover {
  color: var(--primary-blue);
}

.faq-question .faq-toggle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-soft-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-blue);
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
  transition: transform var(--transition-normal), background var(--transition-fast);
}

.faq-question .faq-toggle.open {
  transform: rotate(45deg);
  background: var(--primary-blue);
  color: #fff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.faq-answer.open {
  max-height: 300px;
}

.faq-answer p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
  padding: 12px 0 8px;
}

/* CTA section */
.cta-section {
  background: var(--bg-page);
  padding: 88px 0;
}

.cta-card {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  background: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 48px 40px;
  border: 1px solid var(--border-color-light);
  box-shadow: var(--shadow-default);
}

.cta-card h2 {
  margin-bottom: 12px;
}

.cta-card p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-size: 16px;
  line-height: 1.8;
}

.cta-card .cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Fixed bottom CTA */
.fixed-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 900;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-top: 1px solid var(--border-color-light);
  box-shadow: 0 -2px 12px rgba(30, 58, 90, 0.06);
  min-height: 60px;
  display: flex;
  align-items: center;
}

.fixed-cta .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.fixed-cta .cta-text {
  font-size: 15px;
  color: var(--text-primary);
  font-weight: 500;
}

.fixed-cta .cta-text span {
  color: var(--primary-blue);
  font-weight: 600;
}

/* Footer */
footer.site-footer {
  background: #16283C;
  color: #B0BECB;
  padding: 56px 0 32px;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}

.footer-brand .footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 13px;
  line-height: 1.7;
  color: #9AA9B8;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #E0E9F2;
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  color: #B0BECB;
  font-size: 13px;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
  color: #CFE3F5;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: #7A8EA3;
}

.footer-bottom .legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.footer-bottom .legal-links a {
  color: #7A8EA3;
  text-decoration: none;
  font-size: 12px;
  transition: color var(--transition-fast);
}

.footer-bottom .legal-links a:hover {
  color: #CFE3F5;
}

.footer-bottom span {
  color: #7A8EA3;
  font-size: 12px;
}

/* Responsive */
@media (max-width: 1023px) {
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  h1 {
    font-size: 30px;
  }

  h2 {
    font-size: 24px;
  }

  .deep-content-grid .deep-img {
    flex: 0 0 320px;
    max-width: 320px;
  }

  .deep-content-grid .deep-img img {
    height: 200px;
  }
}

@media (max-width: 767px) {
  :root {
    --section-padding: 48px;
    --header-height: 56px;
  }

  body {
    padding-bottom: 90px;
  }

  .container {
    padding: 0 16px;
  }

  section {
    padding: var(--section-padding) 0;
  }

  h1 {
    font-size: 26px;
  }

  h2 {
    font-size: 21px;
  }

  h3 {
    font-size: 18px;
  }

  .nav-left,
  .nav-right {
    display: none;
  }

  .hamburger {
    display: flex;
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1001;
  }

  .logo {
    position: static;
    transform: none;
    margin: 0 auto;
    font-size: 18px;
  }

  .logo a {
    font-size: 18px;
  }

  .logo-icon {
    width: 24px;
    height: 24px;
    font-size: 12px;
    border-radius: 6px;
  }

  .header-inner {
    justify-content: center;
    padding: 0 16px;
  }

  .category-banner {
    padding: 48px 0;
  }

  .category-banner .banner-text h1 {
    font-size: 24px;
  }

  .category-banner .banner-text p {
    font-size: 14px;
  }

  .category-banner .banner-side-img {
    width: 100%;
    height: 150px;
    flex-shrink: 1;
  }

  .category-banner .banner-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .featured-grid {
    grid-template-columns: 1fr;
  }

  .game-category-item {
    flex-wrap: wrap;
    padding: 14px 16px;
  }

  .game-category-item .item-info {
    flex: 1 1 100%;
  }

  .deep-content-grid .deep-img {
    flex: 1 1 100%;
    max-width: 100%;
  }

  .deep-content-grid .deep-img img {
    height: 170px;
  }

  .cta-card {
    padding: 32px 20px;
  }

  .cta-card .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .cta-card .cta-buttons .btn {
    width: 100%;
    max-width: 280px;
  }

  .fixed-cta {
    min-height: 50px;
    padding: 10px 0;
  }

  .fixed-cta .container {
    flex-direction: column;
    gap: 8px;
    align-items: center;
  }

  .fixed-cta .cta-text {
    font-size: 13px;
    text-align: center;
  }

  .fixed-cta .btn {
    font-size: 13px;
    padding: 8px 16px;
    min-height: 38px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

.featured-grid-large-first .featured-card:first-child {
    grid-column: span 2;
  }
  @media (max-width: 1023px) {
    .featured-grid-large-first .featured-card:first-child {
      grid-column: span 2;
    }
  }
  @media (max-width: 767px) {
    .featured-grid-large-first .featured-card:first-child {
      grid-column: span 1;
    }
  }

/* roulang page: category1 */
:root {
            --primary-blue: #1E5A8A;
            --primary-blue-hover: #174a72;
            --primary-blue-light: #2a6da3;
            --accent-gold: #C09A4E;
            --accent-gold-hover: #a8873e;
            --bg-page: #F5F8FB;
            --bg-card: #FFFFFF;
            --bg-soft: #F0F4F8;
            --bg-soft-blue: #EAF0F6;
            --text-primary: #1A2B3D;
            --text-secondary: #526579;
            --text-muted: #7A8B9C;
            --border-color: #DDE6EE;
            --border-color-light: #E2E8F0;
            --shadow-default: 0 4px 14px rgba(30, 58, 90, 0.08);
            --shadow-hover: 0 8px 24px rgba(30, 58, 90, 0.14);
            --radius-card: 14px;
            --radius-button: 8px;
            --radius-badge: 6px;
            --radius-image: 12px;
            --font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', 'WenQuanYi Micro Hei', sans-serif;
            --header-height: 64px;
            --container-max: 1200px;
            --section-padding: 72px;
            --section-padding-mobile: 48px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.4s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-page);
            min-height: 100vh;
            padding-bottom: 120px;
        }

        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--primary-blue-hover);
        }

        a:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--font-family);
            font-size: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        section {
            padding: var(--section-padding) 0;
        }

        .section-header {
            max-width: 760px;
            margin-bottom: 40px;
        }

        .section-header h2 {
            margin-bottom: 12px;
            font-size: 28px;
            font-weight: 600;
            line-height: 1.3;
            color: var(--text-primary);
        }

        .section-header p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        .section-tag {
            display: inline-block;
            background: var(--bg-soft-blue);
            color: var(--primary-blue);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        /* ========== Header / Navigation ========== */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color-light);
            box-shadow: 0 1px 8px rgba(30, 58, 90, 0.05);
            min-height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            min-height: var(--header-height);
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-left {
            justify-content: flex-end;
            flex: 1;
            padding-right: 20px;
        }

        .nav-right {
            justify-content: flex-start;
            flex: 1;
            padding-left: 20px;
        }

        .logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: 0.5px;
            line-height: 1;
            z-index: 10;
        }

        .logo a {
            color: var(--text-primary);
            font-weight: 700;
            font-size: 22px;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo a:hover {
            color: var(--primary-blue);
        }

        .logo-icon {
            width: 28px;
            height: 28px;
            background: var(--primary-blue);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            font-weight: 700;
        }

        .nav-link {
            font-size: 15px;
            color: #33475C;
            padding: 6px 2px;
            position: relative;
            text-decoration: none;
            white-space: nowrap;
            transition: color var(--transition-fast);
            min-height: 44px;
            display: inline-flex;
            align-items: center;
        }

        .nav-link:hover {
            color: var(--primary-blue);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--primary-blue);
            border-radius: 2px;
            transition: width var(--transition-normal);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--primary-blue);
            font-weight: 600;
        }

        .nav-link.active::after {
            width: 100%;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px;
            min-width: 44px;
            min-height: 44px;
            align-items: center;
            justify-content: center;
            background: transparent;
            border: none;
            cursor: pointer;
            position: relative;
            z-index: 1001;
        }

        .hamburger span {
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: transform var(--transition-normal), opacity var(--transition-normal);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        .hamburger:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 6px;
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            z-index: 999;
            padding: 16px 24px;
            flex-direction: column;
            gap: 4px;
            max-height: calc(100vh - var(--header-height));
            overflow-y: auto;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-link {
            display: block;
            width: 100%;
            padding: 12px 8px;
            min-height: 44px;
            border-bottom: 1px solid var(--border-color-light);
            font-size: 16px;
        }

        .mobile-menu .nav-link:last-child {
            border-bottom: none;
        }

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-button);
            font-size: 15px;
            font-weight: 500;
            line-height: 1.6;
            text-decoration: none;
            transition: all var(--transition-fast);
            cursor: pointer;
            min-height: 44px;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--primary-blue);
            color: #fff;
            border: 1px solid var(--primary-blue);
        }

        .btn-primary:hover {
            background: var(--primary-blue-hover);
            border-color: var(--primary-blue-hover);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-primary:active {
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
            transform: translateY(0);
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary-blue);
            border: 1px solid var(--primary-blue);
        }

        .btn-secondary:hover {
            background: var(--bg-soft-blue);
            color: var(--primary-blue-hover);
            transform: translateY(-1px);
        }

        .btn-secondary:active {
            box-shadow: inset 0 2px 4px rgba(30, 58, 90, 0.1);
            transform: translateY(0);
        }

        .btn-gold {
            background: var(--accent-gold);
            color: #fff;
            border: 1px solid var(--accent-gold);
        }

        .btn-gold:hover {
            background: var(--accent-gold-hover);
            border-color: var(--accent-gold-hover);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-gold:active {
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
            transform: translateY(0);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            min-height: 40px;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
            min-height: 52px;
        }

        .btn-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary-blue);
            font-size: 15px;
            font-weight: 500;
            text-decoration: none;
            transition: all var(--transition-fast);
        }

        .btn-arrow:hover {
            color: var(--primary-blue-hover);
        }

        .btn-arrow:hover .arrow-icon {
            transform: translateX(4px);
        }

        .arrow-icon {
            display: inline-block;
            transition: transform var(--transition-fast);
            font-size: 16px;
        }

        /* ========== Cards ========== */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            padding: 24px;
            transition: all var(--transition-normal);
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        /* ========== Badge ========== */
        .badge {
            display: inline-block;
            background: var(--bg-soft-blue);
            color: var(--primary-blue);
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            letter-spacing: 0.2px;
        }

        .badge-gold {
            background: #fdf6e9;
            color: var(--accent-gold);
        }

        /* ========== Page Banner ========== */
        .page-banner {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-color: #1a2b3d;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center center;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 43, 61, 0.88) 0%, rgba(30, 90, 138, 0.78) 55%, rgba(26, 43, 61, 0.65) 100%);
            z-index: 1;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
            padding-top: 56px;
            padding-bottom: 56px;
        }

        .page-banner h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.2;
            color: #ffffff;
            margin-bottom: 14px;
            max-width: 700px;
        }

        .page-banner .banner-subtitle {
            font-size: 17px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.88);
            max-width: 620px;
            margin-bottom: 22px;
        }

        .page-banner .banner-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .banner-stat {
            display: flex;
            gap: 28px;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .banner-stat-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.9);
            font-size: 14px;
        }

        .banner-stat-item .stat-dot {
            width: 8px;
            height: 8px;
            background: var(--accent-gold);
            border-radius: 50%;
            flex-shrink: 0;
        }

        /* ========== Concept Text Block ========== */
        .concept-block {
            background: var(--bg-card);
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            padding: 32px;
            max-width: 860px;
        }

        .concept-block p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }

        .concept-block p:last-child {
            margin-bottom: 0;
        }

        .concept-block .highlight {
            color: var(--primary-blue);
            font-weight: 500;
        }

        /* ========== Game Type Grid ========== */
        .game-type-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .game-type-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            overflow: hidden;
            transition: all var(--transition-normal);
            cursor: pointer;
        }

        .game-type-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .game-type-card img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            background: var(--bg-soft-blue);
        }

        .game-type-card .card-body {
            padding: 18px 20px 20px;
        }

        .game-type-card .card-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .game-type-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }

        /* ========== Deep Dive Split Section ========== */
        .deep-dive {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .deep-dive .text-side h2 {
            font-size: 26px;
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .deep-dive .text-side p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }

        .deep-dive .image-side {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-default);
            background: var(--bg-soft-blue);
        }

        .deep-dive .image-side img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        /* ========== Game Ranking List ========== */
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            padding: 16px 20px;
            transition: all var(--transition-normal);
            cursor: pointer;
        }

        .ranking-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
        }

        .ranking-index {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            min-width: 36px;
            text-align: center;
        }

        .ranking-index.top {
            color: var(--accent-gold);
        }

        .ranking-item img {
            width: 72px;
            height: 52px;
            border-radius: var(--radius-image);
            object-fit: cover;
            background: var(--bg-soft-blue);
            flex-shrink: 0;
        }

        .ranking-info h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .ranking-info p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .ranking-tag {
            margin-left: auto;
            flex-shrink: 0;
        }

        /* ========== Feature Strip ========== */
        .feature-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .feature-item {
            text-align: center;
            padding: 20px 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            transition: all var(--transition-normal);
        }

        .feature-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .feature-item .feature-icon {
            width: 44px;
            height: 44px;
            background: var(--bg-soft-blue);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 20px;
            color: var(--primary-blue);
        }

        .feature-item h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .feature-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color-light);
            padding: 18px 0;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border-color-light);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-primary);
            line-height: 1.5;
            padding: 2px 0;
            min-height: 44px;
        }

        .faq-question:hover {
            color: var(--primary-blue);
        }

        .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            color: var(--text-muted);
            transition: transform var(--transition-normal);
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--primary-blue);
        }

        .faq-answer {
            display: none;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            padding-top: 10px;
            max-width: 680px;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* ========== CTA Section ========== */
        .cta-box {
            background: var(--bg-card);
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            padding: 40px 32px;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }

        .cta-box h2 {
            font-size: 24px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .cta-box p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .cta-box .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        /* ========== Bottom Fixed Bar ========== */
        .bottom-fixed-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: rgba(255, 255, 255, 0.93);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border-top: 1px solid var(--border-color-light);
            box-shadow: 0 -2px 12px rgba(30, 58, 90, 0.06);
            z-index: 900;
            display: flex;
            align-items: center;
        }

        .bottom-fixed-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

        .bottom-fixed-bar .bar-text {
            font-size: 15px;
            color: var(--text-primary);
            font-weight: 500;
        }

        .bottom-fixed-bar .bar-actions {
            display: flex;
            gap: 12px;
            align-items: center;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #16283C;
            color: #B0BECB;
            padding: 56px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #8FA0B3;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #CFE3F5;
            margin-bottom: 14px;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: #8FA0B3;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #CFE3F5;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #7A8B9C;
        }

        .legal-links {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .legal-links a {
            color: #7A8B9C;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .legal-links a:hover {
            color: #CFE3F5;
        }

        /* ========== Responsive ========== */
        @media (min-width: 1024px) {
            .container {
                padding: 0 24px;
            }

            .game-type-grid {
                grid-template-columns: repeat(4, 1fr);
            }

            .feature-strip {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        @media (max-width: 1023px) and (min-width: 768px) {
            .nav-left,
            .nav-right {
                gap: 18px;
            }

            .nav-left {
                padding-right: 10px;
            }

            .nav-right {
                padding-left: 10px;
            }

            .game-type-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .feature-strip {
                grid-template-columns: repeat(2, 1fr);
            }

            .deep-dive {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .page-banner h1 {
                font-size: 30px;
            }
        }

        @media (max-width: 767px) {
            body {
                padding-bottom: 120px;
            }

            .header-inner {
                padding: 0 16px;
            }

            .nav-left,
            .nav-right {
                display: none;
            }

            .logo {
                position: static;
                transform: none;
                margin: 0 auto;
                flex: 1;
                display: flex;
                justify-content: center;
            }

            .hamburger {
                display: flex;
            }

            .header-inner {
                justify-content: space-between;
            }

            section {
                padding: var(--section-padding-mobile) 0;
            }

            .container {
                padding: 0 16px;
            }

            .page-banner {
                min-height: 240px;
            }

            .page-banner h1 {
                font-size: 26px;
            }

            .page-banner .banner-subtitle {
                font-size: 15px;
            }

            .game-type-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .feature-strip {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .feature-item {
                padding: 16px 12px;
            }

            .deep-dive {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .deep-dive .text-side h2 {
                font-size: 22px;
            }

            .ranking-item {
                flex-wrap: wrap;
                padding: 14px 16px;
            }

            .ranking-tag {
                margin-left: 0;
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .legal-links {
                gap: 10px;
            }

            .cta-box {
                padding: 28px 20px;
            }

            .bottom-fixed-bar {
                height: 56px;
            }

            .bottom-fixed-bar .bar-text {
                font-size: 14px;
            }

            .concept-block {
                padding: 20px;
            }

            .banner-stat {
                gap: 16px;
                font-size: 13px;
            }

            .section-header {
                margin-bottom: 28px;
            }

            .section-header h2 {
                font-size: 22px;
            }
        }

        @media (max-width: 520px) {
            .feature-strip {
                grid-template-columns: 1fr;
            }

            .page-banner h1 {
                font-size: 22px;
            }

            .btn-lg {
                padding: 10px 20px;
                font-size: 15px;
                min-height: 44px;
            }

            .banner-stat {
                flex-direction: column;
                gap: 8px;
            }
        }

/* roulang page: category6 */
:root {
            --primary-blue: #1E5A8A;
            --primary-blue-hover: #174a72;
            --primary-blue-light: #2a6da3;
            --accent-gold: #C09A4E;
            --accent-gold-hover: #a8873e;
            --bg-page: #F5F8FB;
            --bg-card: #FFFFFF;
            --bg-soft: #F0F4F8;
            --bg-soft-blue: #EAF0F6;
            --text-primary: #1A2B3D;
            --text-secondary: #526579;
            --text-muted: #7A8B9C;
            --border-color: #DDE6EE;
            --border-color-light: #E2E8F0;
            --shadow-default: 0 4px 14px rgba(30, 58, 90, 0.08);
            --shadow-hover: 0 8px 24px rgba(30, 58, 90, 0.14);
            --radius-card: 14px;
            --radius-button: 8px;
            --radius-badge: 6px;
            --radius-image: 12px;
            --font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', 'WenQuanYi Micro Hei', sans-serif;
            --header-height: 64px;
            --container-max: 1200px;
            --section-padding: 72px;
            --section-padding-mobile: 48px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.4s ease;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-page);
            min-height: 100vh;
            padding-bottom: 120px;
        }

        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary-blue-hover);
        }
        a:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--font-family);
            font-size: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        section {
            padding: var(--section-padding) 0;
        }

        .section-header {
            max-width: 720px;
            margin-bottom: 40px;
        }
        .section-header h2 {
            margin-bottom: 12px;
            font-size: 28px;
            font-weight: 600;
            line-height: 1.3;
            color: var(--text-primary);
        }
        .section-header p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        .section-tag {
            display: inline-block;
            background: var(--bg-soft-blue);
            color: var(--primary-blue);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        /* Header / Navigation */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color-light);
            box-shadow: 0 1px 8px rgba(30, 58, 90, 0.05);
            min-height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            min-height: var(--header-height);
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-left {
            justify-content: flex-end;
            flex: 1;
            padding-right: 20px;
        }
        .nav-right {
            justify-content: flex-start;
            flex: 1;
            padding-left: 20px;
        }

        .logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: 0.5px;
            line-height: 1;
            z-index: 1001;
        }
        .logo a {
            color: var(--text-primary);
            font-weight: 700;
            font-size: 22px;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo a:hover {
            color: var(--primary-blue);
        }
        .logo-icon {
            width: 28px;
            height: 28px;
            background: var(--primary-blue);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            font-weight: 700;
        }

        .nav-link {
            font-size: 15px;
            color: #33475C;
            padding: 6px 2px;
            position: relative;
            text-decoration: none;
            white-space: nowrap;
            transition: color var(--transition-fast);
            min-height: 44px;
            display: inline-flex;
            align-items: center;
        }
        .nav-link:hover {
            color: var(--primary-blue);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--primary-blue);
            border-radius: 2px;
            transition: width var(--transition-normal);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--primary-blue);
            font-weight: 600;
        }

        .hamburger {
            display: none;
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            width: 44px;
            height: 44px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            z-index: 1002;
            border-radius: 6px;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-normal);
        }
        .hamburger:hover span {
            background: var(--primary-blue);
        }
        .hamburger[aria-expanded="true"] span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .hamburger[aria-expanded="true"] span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background: #fff;
            border-bottom: 1px solid var(--border-color-light);
            box-shadow: 0 8px 20px rgba(30, 58, 90, 0.1);
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 6px;
            z-index: 999;
        }
        .mobile-menu .nav-link {
            display: flex;
            width: 100%;
            padding: 10px 12px;
            border-radius: 8px;
            font-size: 16px;
            min-height: 44px;
        }
        .mobile-menu .nav-link:hover {
            background: var(--bg-soft);
        }
        .mobile-menu .nav-link.active {
            background: var(--bg-soft-blue);
        }
        .mobile-menu .nav-link::after {
            display: none;
        }
        .mobile-menu.open {
            display: flex;
        }

        /* Category Banner */
        .category-banner {
            position: relative;
            padding: 64px 0 56px;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
            min-height: 260px;
            display: flex;
            align-items: center;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(245, 248, 251, 0.95) 0%, rgba(245, 248, 251, 0.82) 45%, rgba(234, 240, 246, 0.7) 100%);
            z-index: 1;
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
        }
        .category-banner h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .category-banner p {
            font-size: 17px;
            line-height: 1.75;
            color: var(--text-secondary);
            max-width: 600px;
        }
        .banner-breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .banner-breadcrumb a {
            color: var(--primary-blue);
        }
        .banner-breadcrumb span {
            color: var(--text-muted);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-button);
            font-size: 15px;
            font-weight: 500;
            text-decoration: none;
            transition: all var(--transition-normal);
            min-height: 44px;
            min-width: 44px;
            cursor: pointer;
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary-blue);
            color: #fff;
            border: 1px solid var(--primary-blue);
        }
        .btn-primary:hover {
            background: var(--primary-blue-hover);
            border-color: var(--primary-blue-hover);
            color: #fff;
            box-shadow: var(--shadow-default);
        }
        .btn-primary:active {
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
        }
        .btn-gold {
            background: var(--accent-gold);
            color: #fff;
            border: 1px solid var(--accent-gold);
        }
        .btn-gold:hover {
            background: var(--accent-gold-hover);
            border-color: var(--accent-gold-hover);
            color: #fff;
            box-shadow: var(--shadow-default);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary-blue);
            border: 1px solid var(--primary-blue);
        }
        .btn-outline:hover {
            background: var(--bg-soft-blue);
            border-color: var(--primary-blue);
            color: var(--primary-blue-hover);
        }
        .btn-outline:active {
            background: var(--bg-soft);
        }

        /* Cards & Layout */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            border: 1px solid var(--border-color-light);
            padding: 24px;
            transition: box-shadow var(--transition-normal), transform var(--transition-normal);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        /* Security Intro Section */
        .security-intro {
            padding: 48px 0 24px;
        }
        .security-intro .intro-content {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }
        .security-intro .intro-text p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .security-intro .intro-text p:last-child {
            margin-bottom: 0;
        }
        .security-intro .intro-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-default);
        }
        .security-intro .intro-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            border-radius: var(--radius-card);
        }

        /* Security Feature List */
        .security-list {
            padding: 48px 0;
        }
        .security-list-item {
            display: grid;
            grid-template-columns: 180px 1fr auto;
            gap: 20px;
            align-items: center;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            margin-bottom: 16px;
            transition: box-shadow var(--transition-normal), transform var(--transition-normal);
        }
        .security-list-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .security-list-item .item-thumb {
            width: 180px;
            height: 100px;
            border-radius: var(--radius-image);
            overflow: hidden;
        }
        .security-list-item .item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-image);
        }
        .security-list-item .item-info h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
            line-height: 1.35;
        }
        .security-list-item .item-info p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .security-list-item .item-action {
            white-space: nowrap;
        }
        .security-list-item .item-action a {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary-blue);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-normal), color var(--transition-fast);
        }
        .security-list-item .item-action a:hover {
            color: var(--primary-blue-hover);
            gap: 8px;
        }

        /* Deep Content Section */
        .deep-section {
            padding: 48px 0;
            background: var(--bg-soft);
            border-radius: var(--radius-card);
        }
        .deep-section .container {
            max-width: 1000px;
        }
        .deep-grid {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            gap: 40px;
            align-items: start;
        }
        .deep-grid .deep-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-default);
        }
        .deep-grid .deep-image img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            border-radius: var(--radius-card);
        }
        .deep-grid .deep-text h2 {
            font-size: 26px;
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .deep-grid .deep-text p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 14px;
        }
        .deep-grid .deep-text .deep-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }
        .deep-grid .deep-text .deep-tags span {
            display: inline-block;
            background: var(--bg-card);
            color: var(--primary-blue);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            border: 1px solid var(--border-color-light);
        }

        /* Security Steps */
        .security-steps {
            padding: 48px 0;
        }
        .step-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 8px;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            padding: 24px 20px;
            text-align: left;
            transition: box-shadow var(--transition-normal), transform var(--transition-normal);
        }
        .step-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: 50%;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .step-card h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-section {
            padding: 48px 0;
        }
        .faq-list {
            max-width: 760px;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color-light);
            padding: 16px 0;
            transition: background var(--transition-fast);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border-color-light);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            text-align: left;
            padding: 12px 8px;
            min-height: 48px;
            cursor: pointer;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-primary);
            background: transparent;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--primary-blue);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .faq-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            font-size: 18px;
            color: var(--primary-blue);
            flex-shrink: 0;
            transition: transform var(--transition-normal);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            display: none;
            padding: 0 8px 12px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 680px;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* CTA Section */
        .cta-section {
            padding: 48px 0 56px;
        }
        .cta-box {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-box .cta-text h2 {
            font-size: 24px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.35;
        }
        .cta-box .cta-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .cta-box .cta-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* Fixed Bottom Bar */
        .fixed-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border-top: 1px solid var(--border-color-light);
            min-height: 64px;
            display: flex;
            align-items: center;
            z-index: 998;
            padding: 8px 24px;
        }
        .fixed-cta-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
        }
        .fixed-cta-bar p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .fixed-cta-bar .bar-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        /* Footer */
        footer.site-footer {
            background: #16283C;
            color: #B0BECB;
            padding: 48px 0 24px;
            margin-top: 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: #B0BECB;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: #CFE3F5;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 12px;
        }
        .footer-bottom span,
        .footer-bottom a {
            font-size: 12px;
            color: #B0BECB;
        }
        .footer-bottom a {
            color: #CFE3F5;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .legal-links {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-left,
            .nav-right {
                gap: 16px;
            }
            .nav-left {
                padding-right: 10px;
            }
            .nav-right {
                padding-left: 10px;
            }
            .nav-link {
                font-size: 14px;
            }
            .logo a {
                font-size: 19px;
            }
            .deep-grid {
                gap: 24px;
            }
            .deep-grid .deep-image img {
                height: 280px;
            }
            .step-flow {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-padding: 48px;
                --header-height: 56px;
            }
            body {
                padding-bottom: 140px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .hamburger {
                display: flex;
            }
            .nav-left,
            .nav-right {
                display: none;
            }
            .logo {
                position: static;
                transform: none;
                margin-left: 48px;
            }
            .logo a {
                font-size: 18px;
            }
            .mobile-menu.open {
                display: flex;
            }
            .category-banner {
                min-height: 200px;
                padding: 40px 0 32px;
            }
            .category-banner h1 {
                font-size: 28px;
            }
            .category-banner p {
                font-size: 15px;
            }
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .security-intro .intro-content {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .security-intro .intro-image img {
                height: 200px;
            }
            .security-list-item {
                grid-template-columns: 1fr;
                gap: 12px;
                padding: 16px;
            }
            .security-list-item .item-thumb {
                width: 100%;
                height: 160px;
            }
            .security-list-item .item-action {
                text-align: left;
            }
            .deep-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .deep-grid .deep-image img {
                height: 220px;
            }
            .step-flow {
                grid-template-columns: 1fr;
            }
            .cta-box {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 20px;
            }
            .fixed-cta-bar {
                padding: 8px 16px;
                min-height: 56px;
            }
            .fixed-cta-bar .container {
                flex-direction: row;
                align-items: center;
            }
            .fixed-cta-bar p {
                font-size: 13px;
            }
            .fixed-cta-bar .bar-actions .btn {
                padding: 8px 16px;
                font-size: 14px;
                min-height: 44px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            section {
                padding: var(--section-padding-mobile) 0;
            }
            .security-intro,
            .security-list,
            .deep-section,
            .security-steps,
            .faq-section,
            .cta-section {
                padding: 32px 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-banner h1 {
                font-size: 24px;
            }
            .category-banner p {
                font-size: 14px;
            }
            .btn {
                padding: 8px 16px;
                font-size: 14px;
                min-height: 44px;
            }
            .cta-box .cta-text h2 {
                font-size: 20px;
            }
            .fixed-cta-bar p {
                font-size: 12px;
                line-height: 1.4;
            }
            .fixed-cta-bar .bar-actions {
                gap: 4px;
            }
            .fixed-cta-bar .bar-actions .btn {
                padding: 8px 12px;
                font-size: 13px;
                min-height: 42px;
            }
        }

/* roulang page: category4 */
:root {
            --primary-blue: #1E5A8A;
            --primary-blue-hover: #174a72;
            --primary-blue-light: #2a6da3;
            --accent-gold: #C09A4E;
            --accent-gold-hover: #a8873e;
            --bg-page: #F5F8FB;
            --bg-card: #FFFFFF;
            --bg-soft: #F0F4F8;
            --bg-soft-blue: #EAF0F6;
            --text-primary: #1A2B3D;
            --text-secondary: #526579;
            --text-muted: #7A8B9C;
            --border-color: #DDE6EE;
            --border-color-light: #E2E8F0;
            --shadow-default: 0 4px 14px rgba(30, 58, 90, 0.08);
            --shadow-hover: 0 8px 24px rgba(30, 58, 90, 0.14);
            --radius-card: 14px;
            --radius-button: 8px;
            --radius-badge: 6px;
            --radius-image: 12px;
            --font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', 'WenQuanYi Micro Hei', sans-serif;
            --header-height: 64px;
            --container-max: 1200px;
            --section-padding: 48px;
            --section-padding-mobile: 40px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.4s ease;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-page);
            min-height: 100vh;
            padding-bottom: 120px;
            margin: 0;
        }

        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--primary-blue-hover);
        }

        a:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--font-family);
            font-size: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        section {
            padding: var(--section-padding) 0;
        }

        .section-header {
            max-width: 720px;
            margin-bottom: 40px;
        }

        .section-header h2 {
            margin-bottom: 12px;
            font-size: 26px;
            font-weight: 600;
            line-height: 1.3;
            color: var(--text-primary);
        }

        .section-header p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin: 0;
        }

        .section-tag {
            display: inline-block;
            background: var(--bg-soft-blue);
            color: var(--primary-blue);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        /* Header / Navigation */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color-light);
            box-shadow: 0 1px 8px rgba(30, 58, 90, 0.05);
            min-height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            min-height: var(--header-height);
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-left {
            justify-content: flex-end;
            flex: 1;
            padding-right: 20px;
        }

        .nav-right {
            justify-content: flex-start;
            flex: 1;
            padding-left: 20px;
        }

        .logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: 0.5px;
            line-height: 1;
            z-index: 1001;
        }

        .logo a {
            color: var(--text-primary);
            font-weight: 700;
            font-size: 22px;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo a:hover {
            color: var(--primary-blue);
        }

        .logo-icon {
            width: 28px;
            height: 28px;
            background: var(--primary-blue);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            font-weight: 700;
        }

        .nav-link {
            font-size: 15px;
            color: #33475C;
            padding: 6px 2px;
            position: relative;
            text-decoration: none;
            white-space: nowrap;
            transition: color var(--transition-fast);
            min-height: 44px;
            display: inline-flex;
            align-items: center;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: var(--primary-blue);
            border-radius: 2px;
            transition: width var(--transition-fast);
        }

        .nav-link:hover {
            color: var(--primary-blue);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--primary-blue);
            font-weight: 600;
        }

        .nav-link.active::after {
            width: 100%;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            border-radius: 8px;
            transition: background var(--transition-fast);
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 1002;
        }

        .hamburger:hover {
            background: var(--bg-soft);
        }

        .hamburger:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
            transform-origin: center;
        }

        .hamburger[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }

        .hamburger[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border-color-light);
            box-shadow: 0 8px 24px rgba(30, 58, 90, 0.12);
            padding: 16px 20px 24px;
            flex-direction: column;
            gap: 4px;
            z-index: 999;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-link {
            min-height: 48px;
            font-size: 16px;
            padding: 10px 4px;
            border-bottom: 1px solid var(--border-color-light);
        }

        .mobile-menu .nav-link:last-child {
            border-bottom: none;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-button);
            font-size: 15px;
            font-weight: 500;
            line-height: 1.5;
            transition: all var(--transition-fast);
            text-decoration: none;
            min-height: 44px;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--primary-blue);
            color: #fff;
            border: 1px solid var(--primary-blue);
        }

        .btn-primary:hover {
            background: var(--primary-blue-hover);
            border-color: var(--primary-blue-hover);
            color: #fff;
            box-shadow: 0 4px 12px rgba(30, 58, 90, 0.2);
        }

        .btn-primary:active {
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
            background: var(--primary-blue-hover);
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary-blue);
            border: 1px solid var(--primary-blue);
        }

        .btn-secondary:hover {
            background: var(--bg-soft-blue);
            color: var(--primary-blue-hover);
            border-color: var(--primary-blue-hover);
        }

        .btn-secondary:active {
            background: var(--bg-soft);
        }

        .btn-gold {
            background: var(--accent-gold);
            color: #fff;
            border: 1px solid var(--accent-gold);
        }

        .btn-gold:hover {
            background: var(--accent-gold-hover);
            border-color: var(--accent-gold-hover);
            color: #fff;
            box-shadow: 0 4px 14px rgba(192, 154, 78, 0.25);
        }

        .btn-gold:active {
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.12);
        }

        /* Cards */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            border: 1px solid var(--border-color-light);
            padding: 24px;
            transition: all var(--transition-normal);
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        /* Banner */
        .page-banner {
            background-image: linear-gradient(135deg, rgba(245, 248, 251, 0.92) 0%, rgba(234, 240, 246, 0.88) 50%, rgba(245, 248, 251, 0.95) 100%), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 64px 0 56px;
            border-bottom: 1px solid var(--border-color-light);
            position: relative;
        }

        .page-banner .container {
            position: relative;
            z-index: 1;
        }

        .page-banner h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
            margin: 0 0 14px;
            letter-spacing: 0.5px;
        }

        .page-banner .banner-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 640px;
            margin: 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            text-decoration: none;
        }

        .breadcrumb a:hover {
            color: var(--primary-blue);
        }

        .breadcrumb .sep {
            color: var(--text-muted);
        }

        .breadcrumb .current {
            color: var(--primary-blue);
            font-weight: 500;
        }

        /* Guide intro section */
        .guide-intro {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }

        .guide-intro-text {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-secondary);
        }

        .guide-intro-text p {
            margin: 0 0 16px;
        }

        .guide-intro-text p:last-child {
            margin-bottom: 0;
        }

        .guide-intro-image {
            border-radius: var(--radius-image);
            overflow: hidden;
            box-shadow: var(--shadow-default);
            border: 1px solid var(--border-color-light);
        }

        .guide-intro-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-image);
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 12px;
        }

        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            border: 1px solid var(--border-color-light);
            padding: 24px 20px;
            transition: all var(--transition-normal);
            position: relative;
            text-align: center;
        }

        .step-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: var(--primary-blue);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            border-radius: 50%;
            margin-bottom: 14px;
            line-height: 1;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin: 0 0 8px;
            color: var(--text-primary);
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /* Article list */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .article-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            border: 1px solid var(--border-color-light);
            padding: 18px 20px;
            transition: all var(--transition-normal);
        }

        .article-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(3px);
        }

        .article-item-icon {
            flex-shrink: 0;
            width: 46px;
            height: 46px;
            background: var(--bg-soft-blue);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-blue);
            font-size: 20px;
            font-weight: 600;
        }

        .article-item-content {
            flex: 1;
            min-width: 0;
        }

        .article-item-content h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.4;
            margin: 0 0 6px;
            color: var(--text-primary);
        }

        .article-item-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin: 0 0 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-item-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary-blue);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-fast);
        }

        .article-item-link:hover {
            color: var(--primary-blue-hover);
            gap: 8px;
        }

        /* Deep content section */
        .deep-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            border: 1px solid var(--border-color-light);
            padding: 32px;
        }

        .deep-content-image {
            border-radius: var(--radius-image);
            overflow: hidden;
            border: 1px solid var(--border-color-light);
        }

        .deep-content-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-image);
        }

        .deep-content-text h3 {
            font-size: 22px;
            font-weight: 600;
            line-height: 1.35;
            margin: 0 0 14px;
            color: var(--text-primary);
        }

        .deep-content-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 14px;
        }

        .deep-content-text p:last-child {
            margin-bottom: 0;
        }

        .deep-content-text .highlight {
            color: var(--primary-blue);
            font-weight: 500;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color-light);
            padding: 4px 0;
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border-color-light);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 16px 4px;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-primary);
            text-align: left;
            background: none;
            border: none;
            cursor: pointer;
            transition: color var(--transition-fast);
            min-height: 44px;
        }

        .faq-question:hover {
            color: var(--primary-blue);
        }

        .faq-question:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-soft-blue);
            color: var(--primary-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 600;
            transition: all var(--transition-fast);
            line-height: 1;
        }

        .faq-item.open .faq-icon {
            background: var(--primary-blue);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal), padding var(--transition-normal);
            padding: 0 4px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 4px 16px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* CTA Section */
        .cta-section {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            border: 1px solid var(--border-color-light);
            padding: 40px 32px;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 26px;
            font-weight: 600;
            line-height: 1.35;
            margin: 0 0 10px;
            color: var(--text-primary);
        }

        .cta-section p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 24px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* Footer */
        footer.site-footer {
            background: #16283C;
            color: #B0BECB;
            padding: 48px 0 32px;
            margin-top: 64px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #CFE3F5;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #8FA0B0;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #CFE3F5;
            margin: 0 0 14px;
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li {
            margin: 0;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: #8FA0B0;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #CFE3F5;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 13px;
            color: #8FA0B0;
        }

        .legal-links {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .legal-links a {
            color: #8FA0B0;
            text-decoration: none;
            font-size: 13px;
        }

        .legal-links a:hover {
            color: #CFE3F5;
        }

        /* Bottom fixed CTA bar */
        .bottom-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border-top: 1px solid var(--border-color-light);
            box-shadow: 0 -2px 12px rgba(30, 58, 90, 0.06);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 32px;
            z-index: 900;
            gap: 16px;
        }

        .bottom-cta-bar .cta-text {
            font-size: 15px;
            color: var(--text-primary);
            font-weight: 500;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .guide-intro {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .deep-content {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            .bottom-cta-bar {
                padding: 0 20px;
                height: 56px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-padding: 36px;
                --header-height: 56px;
            }

            .header-inner {
                padding: 0 16px;
            }

            .hamburger {
                display: flex;
            }

            .nav-left,
            .nav-right {
                display: none;
            }

            .logo {
                position: static;
                transform: none;
                font-size: 18px;
                margin-right: auto;
            }

            .header-inner {
                justify-content: flex-start;
                gap: 12px;
            }

            .page-banner {
                padding: 48px 0 40px;
            }

            .page-banner h1 {
                font-size: 28px;
            }

            .page-banner .banner-desc {
                font-size: 15px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .article-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
            }

            .article-item-icon {
                width: 40px;
                height: 40px;
                font-size: 16px;
            }

            .deep-content {
                padding: 20px;
            }

            .deep-content-text h3 {
                font-size: 19px;
            }

            .cta-section {
                padding: 28px 20px;
            }

            .cta-section h2 {
                font-size: 22px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }

            .legal-links {
                justify-content: center;
            }

            .bottom-cta-bar {
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                height: 56px;
                padding: 0 16px;
                flex-wrap: nowrap;
                gap: 10px;
            }

            .bottom-cta-bar .cta-text {
                font-size: 13px;
                flex: 1;
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
            }

            .bottom-cta-bar .btn {
                padding: 8px 16px;
                font-size: 13px;
                min-height: 40px;
                white-space: nowrap;
            }

            .container {
                padding: 0 16px;
            }

            body {
                padding-bottom: 100px;
            }

            .section-header h2 {
                font-size: 22px;
            }

            .faq-question {
                font-size: 15px;
                padding: 14px 2px;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 24px;
            }

            .breadcrumb {
                font-size: 12px;
            }

            .btn {
                padding: 8px 16px;
                font-size: 14px;
                min-height: 44px;
            }

            .cta-section .btn-group {
                flex-direction: column;
                width: 100%;
            }

            .cta-section .btn-group .btn {
                width: 100%;
            }

            .bottom-cta-bar {
                display: flex;
                flex-direction: row;
                align-items: center;
            }

            .bottom-cta-bar .cta-text {
                display: none;
            }

            .bottom-cta-bar .btn {
                flex: 1;
                text-align: center;
                justify-content: center;
            }
        }

/* roulang page: category5 */
:root {
            --primary-blue: #1E5A8A;
            --primary-blue-hover: #174a72;
            --primary-blue-light: #2a6da3;
            --accent-gold: #C09A4E;
            --accent-gold-hover: #a8873e;
            --bg-page: #F5F8FB;
            --bg-card: #FFFFFF;
            --bg-soft: #F0F4F8;
            --bg-soft-blue: #EAF0F6;
            --text-primary: #1A2B3D;
            --text-secondary: #526579;
            --text-muted: #7A8B9C;
            --border-color: #DDE6EE;
            --border-color-light: #E2E8F0;
            --shadow-default: 0 4px 14px rgba(30, 58, 90, 0.08);
            --shadow-hover: 0 8px 24px rgba(30, 58, 90, 0.14);
            --radius-card: 14px;
            --radius-button: 8px;
            --radius-badge: 6px;
            --radius-image: 12px;
            --font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', 'WenQuanYi Micro Hei', sans-serif;
            --header-height: 64px;
            --container-max: 1200px;
            --section-padding: 48px;
            --section-padding-mobile: 48px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.4s ease;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-page);
            min-height: 100vh;
            padding-bottom: 80px;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary-blue-hover);
        }
        a:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: var(--font-family);
            font-size: inherit;
            color: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        section {
            padding: var(--section-padding) 0;
        }
        .section-header {
            max-width: 760px;
            margin-bottom: 32px;
        }
        .section-header h2 {
            margin-bottom: 10px;
            font-size: 26px;
            font-weight: 600;
            line-height: 1.3;
            color: var(--text-primary);
        }
        .section-header p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
        }
        .section-tag {
            display: inline-block;
            background: var(--bg-soft-blue);
            color: var(--primary-blue);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        h1,
        h2,
        h3,
        h4 {
            color: var(--text-primary);
            letter-spacing: 0.3px;
        }
        /* Header / Navigation */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color-light);
            box-shadow: 0 1px 8px rgba(30, 58, 90, 0.05);
            min-height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            min-height: var(--header-height);
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .nav-left {
            justify-content: flex-end;
            flex: 1;
            padding-right: 18px;
        }
        .nav-right {
            justify-content: flex-start;
            flex: 1;
            padding-left: 18px;
        }
        .logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: 0.5px;
            line-height: 1;
            z-index: 1001;
        }
        .logo a {
            color: var(--text-primary);
            font-weight: 700;
            font-size: 22px;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo a:hover {
            color: var(--primary-blue);
        }
        .logo-icon {
            width: 28px;
            height: 28px;
            background: var(--primary-blue);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            font-weight: 700;
        }
        .nav-link {
            font-size: 15px;
            color: #33475C;
            padding: 6px 2px;
            position: relative;
            text-decoration: none;
            white-space: nowrap;
            transition: color var(--transition-fast);
            min-height: 44px;
            display: inline-flex;
            align-items: center;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 3px;
            background: var(--primary-blue);
            border-radius: 3px;
            transition: width var(--transition-normal);
        }
        .nav-link:hover {
            color: var(--primary-blue);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--primary-blue);
            font-weight: 600;
        }
        .nav-link.active::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            padding: 8px;
            border-radius: 8px;
            background: var(--bg-soft);
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 1002;
            transition: background var(--transition-fast);
            border: 1px solid var(--border-color-light);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-normal);
        }
        .hamburger:hover {
            background: var(--bg-soft-blue);
        }
        .hamburger:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
        }
        .hamburger[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
            width: 0;
        }
        .hamburger[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border-color-light);
            box-shadow: 0 16px 32px rgba(30, 58, 90, 0.14);
            padding: 16px 24px;
            flex-direction: column;
            gap: 4px;
            z-index: 999;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-link {
            display: block;
            width: 100%;
            padding: 12px 6px;
            font-size: 16px;
            min-height: 44px;
            border-bottom: 1px solid var(--bg-soft);
            color: var(--text-secondary);
        }
        .mobile-menu .nav-link:last-child {
            border-bottom: none;
        }
        .mobile-menu .nav-link.active {
            color: var(--primary-blue);
            font-weight: 600;
            background: var(--bg-soft-blue);
            border-radius: 8px;
            padding-left: 14px;
        }
        /* Inner Hero Banner */
        .inner-hero {
            position: relative;
            min-height: 42vh;
            display: flex;
            align-items: center;
            padding: 56px 0;
            overflow: hidden;
            background-color: var(--bg-soft-blue);
        }
        .inner-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.34;
            z-index: 1;
        }
        .inner-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(245, 248, 251, 0.55) 0%, rgba(245, 248, 251, 0.92) 100%);
            z-index: 2;
        }
        .inner-hero .container {
            position: relative;
            z-index: 3;
            display: flex;
            align-items: center;
            gap: 36px;
            flex-wrap: wrap;
        }
        .inner-hero-content {
            flex: 1 1 460px;
            max-width: 620px;
        }
        .inner-hero-content .section-tag {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(4px);
            border: 1px solid var(--border-color-light);
        }
        .inner-hero-content h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .inner-hero-content .hero-sub {
            font-size: 17px;
            line-height: 1.85;
            color: var(--text-secondary);
            max-width: 540px;
            margin-bottom: 24px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }
        .hero-side-panel {
            flex: 0 0 320px;
            max-width: 360px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .hero-data-card {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-card);
            padding: 20px 22px;
            box-shadow: var(--shadow-default);
        }
        .hero-data-card .data-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 4px;
        }
        .hero-data-card .data-value {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-blue);
            line-height: 1.2;
        }
        .hero-data-card .data-note {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        .hero-data-row {
            display: flex;
            gap: 12px;
        }
        .hero-data-row .hero-data-card {
            flex: 1;
            padding: 16px 18px;
        }
        .hero-data-row .data-value {
            font-size: 22px;
        }
        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 26px;
            font-size: 15px;
            font-weight: 500;
            border-radius: var(--radius-button);
            text-decoration: none;
            transition: all var(--transition-fast);
            min-height: 44px;
            white-space: nowrap;
            border: 1px solid transparent;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--primary-blue);
            color: #fff;
            border-color: var(--primary-blue);
        }
        .btn-primary:hover {
            background: var(--primary-blue-hover);
            border-color: var(--primary-blue-hover);
            color: #fff;
            box-shadow: 0 4px 14px rgba(30, 58, 90, 0.22);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
        }
        .btn-primary:active {
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary-blue);
            border-color: var(--primary-blue);
        }
        .btn-outline:hover {
            background: var(--bg-soft-blue);
            color: var(--primary-blue-hover);
            border-color: var(--primary-blue-hover);
        }
        .btn-gold {
            background: var(--accent-gold);
            color: #fff;
            border-color: var(--accent-gold);
        }
        .btn-gold:hover {
            background: var(--accent-gold-hover);
            border-color: var(--accent-gold-hover);
            color: #fff;
            box-shadow: 0 4px 14px rgba(192, 154, 78, 0.3);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
            min-height: 38px;
        }
        /* Intro block */
        .intro-block {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 32px 36px;
            box-shadow: var(--shadow-default);
            border: 1px solid var(--border-color-light);
            max-width: 900px;
        }
        .intro-block p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-secondary);
        }
        .intro-block p+p {
            margin-top: 12px;
        }
        /* Sell points asymmetric */
        .sell-layout {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: 24px;
            align-items: stretch;
        }
        .sell-main {
            background: var(--bg-card);
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }
        .sell-main img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
            background: var(--bg-soft-blue);
        }
        .sell-main .sell-body {
            padding: 26px 28px;
            flex: 1;
        }
        .sell-main .sell-body h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .sell-main .sell-body p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-secondary);
        }
        .sell-side {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .sell-card-small {
            background: var(--bg-card);
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            padding: 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            transition: box-shadow var(--transition-normal), transform var(--transition-normal);
        }
        .sell-card-small:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .sell-card-small .sell-icon {
            font-size: 28px;
            margin-bottom: 10px;
        }
        .sell-card-small h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .sell-card-small p {
            font-size: 14px;
            line-height: 1.65;
            color: var(--text-secondary);
        }
        /* Deep block */
        .deep-block {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            overflow: hidden;
        }
        .deep-block-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
        }
        .deep-block-text {
            padding: 36px 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .deep-block-text h2 {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .deep-block-text p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }
        .deep-block-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
            background: var(--bg-soft-blue);
        }
        /* Entries list */
        .entries-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .entry-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            padding: 18px;
            display: flex;
            gap: 16px;
            transition: box-shadow var(--transition-normal), transform var(--transition-normal);
        }
        .entry-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .entry-thumb {
            flex: 0 0 120px;
            height: 90px;
            border-radius: var(--radius-image);
            overflow: hidden;
            background: var(--bg-soft-blue);
        }
        .entry-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .entry-body {
            flex: 1;
        }
        .entry-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .entry-body p {
            font-size: 14px;
            line-height: 1.6;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .entry-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary-blue);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition-fast);
        }
        .entry-link:hover {
            color: var(--primary-blue-hover);
        }
        .entry-link .arrow {
            transition: transform var(--transition-fast);
        }
        .entry-link:hover .arrow {
            transform: translateX(4px);
        }
        /* Process */
        .process-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            counter-reset: process-counter;
        }
        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            padding: 24px 20px;
            position: relative;
            transition: box-shadow var(--transition-normal);
        }
        .process-step:hover {
            box-shadow: var(--shadow-hover);
        }
        .process-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: 50%;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .process-step h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 14px;
            line-height: 1.6;
            color: var(--text-secondary);
        }
        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color-light);
            padding: 4px 0;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border-color-light);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 16px 8px;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            min-height: 48px;
            background: none;
            border: none;
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--primary-blue);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 6px;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--bg-soft-blue);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--primary-blue);
            transition: transform var(--transition-normal), background var(--transition-normal);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary-blue);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-normal);
            padding: 0 8px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 8px 16px;
        }
        /* CTA section */
        .cta-section-custom {
            background: linear-gradient(135deg, rgba(30, 90, 138, 0.06) 0%, rgba(192, 154, 78, 0.08) 100%);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            padding: 40px 36px;
            text-align: center;
            max-width: 960px;
            margin: 0 auto;
        }
        .cta-section-custom h2 {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .cta-section-custom p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 24px;
            max-width: 620px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        /* Footer */
        footer.site-footer {
            background: #16283C;
            color: #B0BECB;
            padding: 48px 0 28px;
            margin-top: 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 28px;
            margin-bottom: 36px;
        }
        .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: #9FB0BF;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #D5DEE6;
            margin-bottom: 14px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: #9FB0BF;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #CFE3F5;
        }
        .footer-bottom {
            border-top: 1px solid rgba(176, 190, 203, 0.18);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #8595A5;
        }
        .legal-links {
            display: flex;
            gap: 16px;
            align-items: center;
            flex-wrap: wrap;
        }
        .legal-links a {
            color: #9FB0BF;
            text-decoration: none;
        }
        .legal-links a:hover {
            color: #CFE3F5;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .nav-left,
            .nav-right {
                gap: 18px;
            }
            .nav-link {
                font-size: 14px;
            }
            .inner-hero-content h1 {
                font-size: 32px;
            }
            .hero-side-panel {
                flex: 0 0 280px;
            }
            .process-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 56px;
                --section-padding: 40px;
            }
            body {
                padding-bottom: 60px;
            }
            section {
                padding: var(--section-padding) 0;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .hamburger {
                display: flex;
            }
            .nav-left,
            .nav-right {
                display: none;
            }
            .logo {
                font-size: 18px;
                transform: none;
                left: auto;
                position: relative;
            }
            .logo a {
                font-size: 18px;
            }
            .logo-icon {
                width: 24px;
                height: 24px;
                font-size: 12px;
                border-radius: 6px;
            }
            .header-inner {
                justify-content: center;
            }
            .mobile-menu.open {
                display: flex;
            }
            .inner-hero {
                min-height: auto;
                padding: 40px 0;
            }
            .inner-hero .container {
                flex-direction: column;
                gap: 24px;
            }
            .inner-hero-content {
                flex: 1 1 auto;
                max-width: 100%;
            }
            .inner-hero-content h1 {
                font-size: 28px;
                line-height: 1.3;
            }
            .inner-hero-content .hero-sub {
                font-size: 15px;
                line-height: 1.7;
            }
            .hero-side-panel {
                flex: 0 0 auto;
                max-width: 100%;
                width: 100%;
            }
            .hero-data-row {
                flex-direction: row;
            }
            .sell-layout {
                grid-template-columns: 1fr;
            }
            .sell-main img {
                height: 180px;
            }
            .deep-block-inner {
                grid-template-columns: 1fr;
            }
            .deep-block-image img {
                min-height: 220px;
            }
            .entries-list {
                grid-template-columns: 1fr;
            }
            .process-list {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .faq-question {
                font-size: 16px;
                padding: 14px 6px;
            }
            .cta-section-custom {
                padding: 32px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-data-row {
                flex-direction: column;
                gap: 10px;
            }
            .entry-item {
                flex-direction: column;
                gap: 12px;
            }
            .entry-thumb {
                flex: 0 0 auto;
                height: 140px;
                width: 100%;
            }
            .process-list {
                grid-template-columns: 1fr;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
                min-height: 48px;
            }
            .sell-main .sell-body {
                padding: 20px;
            }
            .sell-card-small {
                padding: 18px;
            }
        }

/* roulang page: category7 */
:root {
            --primary-blue: #1E5A8A;
            --primary-blue-hover: #174a72;
            --primary-blue-light: #2a6da3;
            --accent-gold: #C09A4E;
            --accent-gold-hover: #a8873e;
            --bg-page: #F5F8FB;
            --bg-card: #FFFFFF;
            --bg-soft: #F0F4F8;
            --bg-soft-blue: #EAF0F6;
            --text-primary: #1A2B3D;
            --text-secondary: #526579;
            --text-muted: #7A8B9C;
            --border-color: #DDE6EE;
            --border-color-light: #E2E8F0;
            --shadow-default: 0 4px 14px rgba(30, 58, 90, 0.08);
            --shadow-hover: 0 8px 24px rgba(30, 58, 90, 0.14);
            --radius-card: 14px;
            --radius-button: 8px;
            --radius-badge: 6px;
            --radius-image: 12px;
            --font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', 'WenQuanYi Micro Hei', sans-serif;
            --header-height: 64px;
            --container-max: 1200px;
            --section-padding: 72px;
            --section-padding-mobile: 48px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.4s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-page);
            min-height: 100vh;
            padding-bottom: 140px;
        }

        a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--primary-blue-hover);
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--font-family);
            font-size: inherit;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        section {
            padding: var(--section-padding) 0;
        }

        .section-header {
            max-width: 720px;
            margin-bottom: 40px;
        }

        .section-header h2 {
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        .section-tag {
            display: inline-block;
            background: var(--bg-soft-blue);
            color: var(--primary-blue);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        h1,
        h2,
        h3,
        h4 {
            color: var(--text-primary);
            line-height: 1.3;
            font-weight: 700;
        }

        h1 {
            font-size: 38px;
            line-height: 1.25;
            letter-spacing: 0.5px;
        }

        h2 {
            font-size: 28px;
            line-height: 1.3;
        }

        h3 {
            font-size: 21px;
            line-height: 1.35;
        }

        h4 {
            font-size: 17px;
            line-height: 1.4;
        }

        p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        /* Header / Navigation */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color-light);
            box-shadow: 0 1px 8px rgba(30, 58, 90, 0.05);
            min-height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            min-height: var(--header-height);
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 24px;
        }

        .nav-left {
            justify-content: flex-end;
            flex: 1;
            padding-right: 20px;
        }

        .nav-right {
            justify-content: flex-start;
            flex: 1;
            padding-left: 20px;
        }

        .logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: 0.5px;
            line-height: 1;
            z-index: 5;
        }

        .logo a {
            color: var(--text-primary);
            font-weight: 700;
            font-size: 22px;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo a:hover {
            color: var(--primary-blue);
        }

        .logo-icon {
            width: 28px;
            height: 28px;
            background: var(--primary-blue);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-link {
            font-size: 15px;
            color: #33475C;
            padding: 6px 2px;
            position: relative;
            text-decoration: none;
            white-space: nowrap;
            transition: color var(--transition-fast);
            min-height: 44px;
            display: inline-flex;
            align-items: center;
        }

        .nav-link:hover {
            color: var(--primary-blue);
        }

        .nav-link.active {
            color: var(--primary-blue);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 3px;
            border-radius: 2px;
            background: var(--primary-blue);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition-fast);
            position: absolute;
            left: 24px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 10;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-normal);
        }

        .hamburger:hover {
            background: var(--bg-soft);
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 8px;
            z-index: 999;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-link {
            width: 100%;
            padding: 10px 8px;
            border-radius: 6px;
            min-height: 44px;
            font-size: 16px;
        }

        .mobile-menu .nav-link:hover {
            background: var(--bg-soft);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 500;
            border-radius: var(--radius-button);
            padding: 10px 24px;
            min-height: 44px;
            transition: all var(--transition-fast);
            text-decoration: none;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary-blue);
            color: #fff;
            border: 1px solid var(--primary-blue);
        }

        .btn-primary:hover {
            background: var(--primary-blue-hover);
            border-color: var(--primary-blue-hover);
            color: #fff;
            box-shadow: var(--shadow-hover);
        }

        .btn-primary:active {
            box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.15);
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary-blue);
            border: 1px solid var(--primary-blue);
        }

        .btn-secondary:hover {
            background: var(--bg-soft-blue);
            color: var(--primary-blue-hover);
        }

        .btn-gold {
            background: var(--accent-gold);
            color: #fff;
            border: 1px solid var(--accent-gold);
        }

        .btn-gold:hover {
            background: var(--accent-gold-hover);
            border-color: var(--accent-gold-hover);
            color: #fff;
            box-shadow: var(--shadow-hover);
        }

        .btn-gold:active {
            box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.15);
        }

        /* Page Banner */
        .page-banner {
            background-image: linear-gradient(180deg, rgba(245, 248, 251, 0.85) 0%, rgba(245, 248, 251, 0.92) 100%), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 64px 0 56px;
            position: relative;
            border-bottom: 1px solid var(--border-color-light);
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .banner-tag {
            display: inline-block;
            background: var(--primary-blue);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            padding: 5px 16px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.4px;
        }

        .page-banner h1 {
            margin-bottom: 14px;
            max-width: 760px;
        }

        .page-banner .banner-desc {
            font-size: 17px;
            line-height: 1.8;
            max-width: 680px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .banner-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .banner-trust {
            display: flex;
            gap: 28px;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .banner-trust-item {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .banner-trust-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-gold);
            display: inline-block;
            flex-shrink: 0;
        }

        /* Intro Section */
        .intro-section {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color-light);
            padding: 56px 0;
        }

        .intro-flex {
            display: flex;
            gap: 48px;
            align-items: flex-start;
        }

        .intro-content {
            flex: 1.2;
        }

        .intro-content p {
            margin-bottom: 14px;
            font-size: 16px;
            line-height: 1.85;
        }

        .intro-side {
            flex: 0.8;
            background: var(--bg-soft);
            border-radius: var(--radius-card);
            padding: 28px;
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
        }

        .intro-side h3 {
            font-size: 18px;
            margin-bottom: 14px;
            color: var(--primary-blue);
        }

        .intro-side ul {
            list-style: none;
            padding: 0;
        }

        .intro-side li {
            font-size: 15px;
            color: var(--text-secondary);
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color-light);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.6;
        }

        .intro-side li:last-child {
            border-bottom: none;
        }

        .intro-side li::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-gold);
            flex-shrink: 0;
            margin-top: 9px;
        }

        /* Steps Timeline */
        .steps-section {
            background: var(--bg-page);
            padding: 64px 0;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
            margin-top: 36px;
        }

        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            position: relative;
            transition: all var(--transition-normal);
            min-height: 220px;
            display: flex;
            flex-direction: column;
        }

        .step-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .step-number {
            width: 36px;
            height: 36px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
            flex-shrink: 0;
        }

        .step-card h3 {
            font-size: 17px;
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            flex-grow: 1;
        }

        .step-arrow {
            color: var(--primary-blue);
            font-weight: 600;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 4px;
            margin-top: 10px;
            transition: gap var(--transition-fast);
        }

        .step-arrow:hover {
            gap: 8px;
            color: var(--primary-blue-hover);
        }

        /* Deep Content Section */
        .deep-section {
            background: var(--bg-card);
            padding: 64px 0;
            border-top: 1px solid var(--border-color-light);
            border-bottom: 1px solid var(--border-color-light);
        }

        .deep-grid {
            display: flex;
            gap: 48px;
            align-items: center;
        }

        .deep-image {
            flex: 0.9;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-default);
            border: 1px solid var(--border-color-light);
        }

        .deep-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .deep-content {
            flex: 1.1;
        }

        .deep-content h2 {
            margin-bottom: 16px;
        }

        .deep-content p {
            font-size: 16px;
            line-height: 1.85;
            margin-bottom: 14px;
        }

        .deep-content .highlight-list {
            list-style: none;
            padding: 0;
            margin-top: 10px;
        }

        .deep-content .highlight-list li {
            font-size: 15px;
            color: var(--text-secondary);
            padding: 8px 0;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.7;
        }

        .deep-content .highlight-list li::before {
            content: '✓';
            color: var(--primary-blue);
            font-weight: 700;
            flex-shrink: 0;
        }

        /* Checklist Cards */
        .checklist-section {
            background: var(--bg-page);
            padding: 64px 0;
        }

        .checklist-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 36px;
        }

        .checklist-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            min-height: 300px;
        }

        .checklist-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .checklist-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            flex-shrink: 0;
            font-size: 20px;
            font-weight: 700;
        }

        .card-icon.blue {
            background: var(--bg-soft-blue);
            color: var(--primary-blue);
        }

        .card-icon.gold {
            background: #fdf6ea;
            color: var(--accent-gold);
        }

        .checklist-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .checklist-card p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-secondary);
            flex-grow: 1;
            margin-bottom: 14px;
        }

        .checklist-card .card-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary-blue);
            display: flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
            text-decoration: none;
        }

        .checklist-card .card-link:hover {
            gap: 8px;
            color: var(--primary-blue-hover);
        }

        /* FAQ Section */
        .faq-section {
            background: var(--bg-card);
            padding: 64px 0;
            border-top: 1px solid var(--border-color-light);
            border-bottom: 1px solid var(--border-color-light);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color-light);
            padding: 0;
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 0;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-primary);
            text-align: left;
            cursor: pointer;
            background: transparent;
            border: none;
            min-height: 44px;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--primary-blue);
        }

        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            line-height: 1;
            color: var(--primary-blue);
            transition: transform var(--transition-normal);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal), padding var(--transition-normal);
            padding: 0;
        }

        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 0 20px 0;
        }

        .faq-answer p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 720px;
        }

        /* CTA Section */
        .cta-section {
            background: var(--bg-page);
            padding: 64px 0;
        }

        .cta-box {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            border: 1px solid var(--border-color-light);
            box-shadow: var(--shadow-default);
            max-width: 860px;
            margin: 0 auto;
        }

        .cta-box h2 {
            margin-bottom: 12px;
        }

        .cta-box p {
            max-width: 620px;
            margin: 0 auto 24px;
            font-size: 16px;
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Bottom Fixed CTA Bar */
        .bottom-fixed-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 900;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border-top: 1px solid var(--border-color-light);
            box-shadow: 0 -2px 12px rgba(30, 58, 90, 0.06);
            padding: 10px 24px;
            min-height: 64px;
            display: flex;
            align-items: center;
        }

        .bottom-fixed-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .bottom-bar-text {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-primary);
            line-height: 1.5;
        }

        .bottom-bar-actions {
            display: flex;
            gap: 10px;
            align-items: center;
            flex-wrap: wrap;
        }

        /* Footer */
        footer.site-footer {
            background: #16283C;
            color: #B0BECB;
            padding: 56px 0 28px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #B0BECB;
            max-width: 340px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            margin-bottom: 14px;
            font-weight: 600;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: #CFE3F5;
            font-size: 14px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            font-size: 13px;
            color: #8A9CAE;
        }

        .legal-links {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .legal-links a {
            color: #CFE3F5;
            font-size: 13px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .legal-links a:hover {
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            h1 {
                font-size: 32px;
            }

            h2 {
                font-size: 24px;
            }

            .steps-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .checklist-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .intro-flex {
                flex-direction: column;
            }

            .deep-grid {
                flex-direction: column;
            }

            .deep-image {
                width: 100%;
            }
        }

        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }

            .nav-left,
            .nav-right {
                display: none;
            }

            .logo {
                position: static;
                transform: none;
                margin: 0 auto;
                font-size: 18px;
            }

            .logo a {
                font-size: 18px;
            }

            .logo-icon {
                width: 24px;
                height: 24px;
                font-size: 12px;
                border-radius: 6px;
            }

            .container {
                padding: 0 16px;
            }

            .page-banner {
                padding: 48px 0 40px;
            }

            .page-banner h1 {
                font-size: 28px;
            }

            .banner-desc {
                font-size: 15px;
            }

            .banner-actions {
                gap: 8px;
            }

            .btn {
                padding: 8px 18px;
                font-size: 14px;
                min-height: 44px;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .checklist-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .checklist-card {
                min-height: auto;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .legal-links {
                gap: 10px;
                flex-wrap: wrap;
            }

            .bottom-fixed-bar {
                padding: 8px 16px;
                min-height: 56px;
            }

            .bottom-bar-text {
                font-size: 14px;
            }

            .bottom-bar-actions .btn {
                padding: 8px 16px;
                font-size: 14px;
                min-height: 40px;
            }

            .intro-side {
                padding: 20px;
            }

            .cta-box {
                padding: 32px 20px;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 24px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
            }

            .checklist-grid {
                grid-template-columns: 1fr;
            }

            .banner-actions {
                flex-direction: column;
            }

            .banner-actions .btn {
                width: 100%;
            }

            .cta-actions .btn {
                width: 100%;
            }

            .bottom-bar-text {
                font-size: 13px;
            }

            .bottom-fixed-bar .container {
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
            }
        }