/* roulang page: index */
:root {
            --brand-primary: #0d1b3e;
            --brand-primary-light: #1b2f5e;
            --brand-primary-dark: #070f24;
            --brand-accent: #f0b35a;
            --brand-accent-dark: #d9973e;
            --brand-accent-light: #fbe4bd;
            --bg-body: #f5f7fa;
            --bg-white: #ffffff;
            --bg-soft: #edf1f7;
            --text-heading: #0d1b3e;
            --text-body: #334155;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --text-invert: #ffffff;
            --border-color: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 12px rgba(13, 27, 62, 0.06);
            --shadow-md: 0 8px 30px rgba(13, 27, 62, 0.10);
            --shadow-lg: 0 20px 50px rgba(13, 27, 62, 0.16);
            --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

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

        html { scroll-behavior: smooth; }

        body {
            margin: 0;
            font-family: var(--font-main);
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.75;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        img { max-width: 100%; }

        button, input { font-family: inherit; }

        .container { max-width: 1180px; }

        .section {
            padding: 100px 0;
            position: relative;
        }

        .section-head { margin-bottom: 56px; }

        .section-head h2 {
            font-size: clamp(26px, 3.2vw, 38px);
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: -0.5px;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-sub {
            max-width: 620px;
            margin: 0 auto;
            color: var(--text-muted);
            font-size: 16px;
        }

        .eyebrow {
            display: inline-block;
            padding: 5px 20px;
            background: rgba(240, 179, 90, 0.14);
            color: var(--brand-accent-dark);
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 30px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            border: 2px solid transparent;
            transition: var(--transition);
            cursor: pointer;
            line-height: 1.5;
            min-height: 48px;
        }

        .btn-gold {
            background: linear-gradient(135deg, #f0b35a, #e59c36);
            color: #0d1b3e;
            box-shadow: 0 6px 20px rgba(240, 179, 90, 0.35);
        }

        .btn-gold:hover {
            background: linear-gradient(135deg, #f4c06e, #eaa73f);
            color: #0d1b3e;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(240, 179, 90, 0.45);
        }

        .btn-gold:active {
            transform: translateY(0);
            box-shadow: 0 4px 14px rgba(240, 179, 90, 0.3);
        }

        .btn-outline-light {
            background: transparent;
            color: #ffffff;
            border-color: rgba(255, 255, 255, 0.65);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #ffffff;
            border-color: #ffffff;
            transform: translateY(-2px);
        }

        .btn-outline-light:focus-visible,
        .btn-gold:focus-visible,
        .nav-cta:focus-visible {
            outline: 3px solid rgba(240, 179, 90, 0.5);
            outline-offset: 3px;
        }

        /* ===== 浮动Dock导航 ===== */
        .site-header {
            position: fixed;
            top: 18px;
            left: 0;
            right: 0;
            z-index: 1040;
            padding: 0 12px;
            pointer-events: none;
        }

        .site-nav {
            pointer-events: auto;
            max-width: 1120px;
            margin: 0 auto;
            height: 64px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: 50px;
            box-shadow: 0 8px 32px rgba(13, 27, 62, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.7);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 12px 0 20px;
            transition: var(--transition);
        }

        .site-nav.scrolled {
            box-shadow: 0 12px 40px rgba(13, 27, 62, 0.18);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: 0.3px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, #0d1b3e, #1b2f5e);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #f0b35a;
            font-size: 15px;
            box-shadow: 0 4px 12px rgba(13, 27, 62, 0.25);
        }

        .logo-text { white-space: nowrap; }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0 auto;
            padding: 0 12px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover { color: var(--brand-accent-dark); background: rgba(240, 179, 90, 0.1); }

        .nav-link.active { color: var(--brand-accent-dark); background: rgba(240, 179, 90, 0.14); font-weight: 600; }

        .nav-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 22px;
            background: linear-gradient(135deg, #0d1b3e, #1b2f5e);
            color: #ffffff;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(13, 27, 62, 0.25);
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(13, 27, 62, 0.35);
            color: #f0b35a;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            border: 1px solid var(--border-color);
            background: transparent;
            color: var(--text-heading);
            font-size: 17px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

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

        .nav-toggle.active { background: var(--brand-primary); color: #ffffff; }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 760px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #070f24 0%, #0d1b3e 48%, #1b2f5e 100%);
            overflow: hidden;
            padding: 170px 0 110px;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.28;
            z-index: 0;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -120px;
            right: -120px;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: rgba(240, 179, 90, 0.12);
            filter: blur(80px);
            z-index: 1;
        }

        .hero-container { position: relative; z-index: 2; }

        .hero-content {
            max-width: 720px;
            color: #ffffff;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 30px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.5px;
            color: #f0b35a;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }

        .hero-content h1 {
            font-size: clamp(34px, 5.2vw, 58px);
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.15;
            margin-bottom: 20px;
            background: linear-gradient(90deg, #ffffff 70%, #f0b35a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: clamp(15px, 1.4vw, 17px);
            color: rgba(255, 255, 255, 0.82);
            max-width: 620px;
            margin-bottom: 34px;
            line-height: 1.8;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 36px;
        }

        .hero-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

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

        .hero-trust i { color: #f0b35a; }

        .hero-scroll {
            position: absolute;
            bottom: 32px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 3;
            color: rgba(255, 255, 255, 0.5);
            font-size: 22px;
            animation: floatY 2.5s ease-in-out infinite;
        }

        @keyframes floatY {
            0%, 100% { transform: translate(-50%, 0); }
            50% { transform: translate(-50%, 8px); }
        }

        /* ===== 核心说明 ===== */
        .features-section { background: var(--bg-body); }

        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            border: 1px solid var(--border-color);
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-md);
            border-color: rgba(240, 179, 90, 0.4);
        }

        .feature-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .feature-card:hover .feature-img img { transform: scale(1.06); }

        .feature-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(13, 27, 62, 0.4) 100%);
        }

        .feature-body {
            padding: 28px 24px 30px;
            position: relative;
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            background: linear-gradient(135deg, #0d1b3e, #1b2f5e);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #f0b35a;
            font-size: 20px;
            box-shadow: 0 6px 18px rgba(13, 27, 62, 0.2);
            margin-top: -52px;
            margin-left: 4px;
            position: relative;
            z-index: 2;
            border: 3px solid var(--bg-white);
        }

        .feature-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 16px 0 10px;
        }

        .feature-body p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            margin: 0;
        }

        /* ===== 分类入口 ===== */
        .category-section {
            background: var(--bg-white);
        }

        .category-card {
            display: block;
            position: relative;
            height: 340px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            background: var(--bg-soft);
        }

        .category-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
            border-color: #f0b35a;
        }

        .category-card > img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .category-card:hover > img { transform: scale(1.07); }

        .category-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 27, 62, 0.08) 35%, rgba(13, 27, 62, 0.88) 100%);
            padding: 28px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            color: #ffffff;
            z-index: 1;
        }

        .category-icon {
            width: 48px;
            height: 48px;
            background: rgba(240, 179, 90, 0.95);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0d1b3e;
            font-size: 19px;
            margin-bottom: 16px;
            box-shadow: 0 6px 16px rgba(240, 179, 90, 0.4);
        }

        .category-overlay h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }

        .category-overlay p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 14px;
            line-height: 1.6;
        }

        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: #f0b35a;
            transition: var(--transition);
        }

        .category-link i { transition: transform 0.3s ease; }

        .category-card:hover .category-link i { transform: translateX(4px); }

        /* ===== 资讯列表 ===== */
        .news-section { background: var(--bg-body); }

        .news-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            padding: 26px;
            height: 100%;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(240, 179, 90, 0.35);
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }

        .news-category {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 3px 12px;
            background: rgba(240, 179, 90, 0.14);
            color: var(--brand-accent-dark);
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
        }

        .news-date {
            font-size: 13px;
            color: var(--text-light);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .news-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 0 0 auto;
        }

        .news-title a:hover { color: var(--brand-accent-dark); }

        .news-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1 1 auto;
            margin-bottom: 18px;
        }

        .news-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-primary);
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            transition: var(--transition);
        }

        .news-more:hover { color: var(--brand-accent-dark); }

        .news-more i { transition: transform 0.3s ease; }

        .news-more:hover i { transform: translateX(4px); }

        .empty-tip {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
            color: var(--text-muted);
            font-size: 16px;
            width: 100%;
        }

        .empty-tip-wrapper { display: contents; }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: linear-gradient(135deg, #0d1b3e 0%, #1b2f5e 100%);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.10;
        }

        .data-stats { position: relative; z-index: 2; }

        .stat-item {
            text-align: center;
            padding: 30px 16px;
            color: #ffffff;
            border-radius: var(--radius-md);
            transition: var(--transition);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.05);
            transform: translateY(-4px);
        }

        .stat-number {
            display: block;
            font-size: clamp(30px, 3.5vw, 48px);
            font-weight: 800;
            line-height: 1.2;
            background: linear-gradient(135deg, #ffffff, #f0b35a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            letter-spacing: 0.5px;
        }

        /* ===== 使用流程 ===== */
        .steps-section { background: var(--bg-white); }

        .steps-row { margin-top: 20px; }

        .step-item {
            text-align: center;
            padding: 34px 24px 30px;
            border-radius: var(--radius-lg);
            background: var(--bg-soft);
            border: 1px solid var(--border-color);
            height: 100%;
            position: relative;
            transition: var(--transition);
        }

        .step-item:hover {
            background: var(--bg-white);
            box-shadow: var(--shadow-md);
            border-color: #f0b35a;
            transform: translateY(-6px);
        }

        .step-num {
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 32px;
            font-weight: 800;
            color: rgba(13, 27, 62, 0.08);
            line-height: 1;
            transition: var(--transition);
        }

        .step-item:hover .step-num { color: rgba(240, 179, 90, 0.35); }

        .step-icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 20px;
            background: linear-gradient(135deg, #0d1b3e, #1b2f5e);
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #f0b35a;
            font-size: 22px;
            box-shadow: 0 8px 20px rgba(13, 27, 62, 0.18);
            transition: var(--transition);
        }

        .step-item:hover .step-icon { transform: scale(1.08); box-shadow: 0 10px 28px rgba(13, 27, 62, 0.3); }

        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-section { background: var(--bg-body); }

        .faq-accordion {
            border-radius: var(--radius-lg);
            overflow: hidden;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover { border-color: rgba(240, 179, 90, 0.4); box-shadow: var(--shadow-sm); }

        .faq-item .accordion-button {
            background: var(--bg-white);
            color: var(--text-heading);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            box-shadow: none;
            border: none;
        }

        .faq-item .accordion-button::after {
            background-image: none;
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 18px;
            color: var(--brand-accent-dark);
            width: auto;
            height: auto;
            transition: transform 0.35s ease;
        }

        .faq-item .accordion-button:not(.collapsed) { color: var(--brand-accent-dark); }

        .faq-item .accordion-button:not(.collapsed)::after { transform: rotate(180deg); }

        .faq-item .accordion-body {
            padding: 0 24px 22px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            background: var(--bg-white);
            border-top: 1px solid var(--border-color);
            padding-top: 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 60px 0 100px;
            background: var(--bg-body);
        }

        .cta-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: linear-gradient(135deg, #0d1b3e, #1b2f5e);
            padding: 70px 40px;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .cta-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 640px;
            color: #ffffff;
        }

        .cta-content h2 {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            margin-bottom: 30px;
        }

        .cta-content .hero-buttons { justify-content: center; margin-bottom: 0; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #070f24;
            color: rgba(255, 255, 255, 0.65);
            padding: 70px 0 0;
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, #f0b35a, #d9973e);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
            gap: 40px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand { padding-right: 20px; }

        .footer-brand .logo-icon {
            margin-bottom: 16px;
            width: 38px;
            height: 38px;
            border-radius: 11px;
            font-size: 16px;
        }

        .footer-brand .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: #ffffff;
            display: inline-block;
            vertical-align: middle;
            margin-left: 10px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            margin: 16px 0 0;
        }

        .footer-links-col h4,
        .footer-info-col h4 {
            color: #ffffff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.4px;
        }

        .footer-links-col ul,
        .footer-info-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links-col a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-links-col a:hover { color: #f0b35a; padding-left: 4px; }

        .footer-info-col li {
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-info-col i { color: #f0b35a; width: 18px; text-align: center; font-size: 13px; }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom p { margin: 0; }

        /* ===== 动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .section { padding: 80px 0; }

            .site-header { top: 10px; }

            .site-nav { max-width: 100%; }

            .nav-toggle { display: flex; }

            .nav-menu {
                position: absolute;
                top: 74px;
                left: 12px;
                right: 12px;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                border-radius: 20px;
                box-shadow: var(--shadow-lg);
                border: 1px solid var(--border-color);
                padding: 16px;
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
            }

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

            .nav-link {
                padding: 12px 18px;
                border-radius: 12px;
                font-size: 15px;
            }

            .nav-cta { padding: 9px 18px; }

            .hero { min-height: 660px; padding: 150px 0 80px; }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 767.98px) {
            .section { padding: 64px 0; }

            .section-head { margin-bottom: 40px; }

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

            .hero-desc { font-size: 15px; }

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

            .footer-top { grid-template-columns: 1fr; }

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

        @media (max-width: 520px) {
            .site-nav { padding: 0 8px 0 14px; height: 58px; }

            .nav-logo { font-size: 16px; }

            .logo-icon { width: 30px; height: 30px; font-size: 13px; border-radius: 8px; }

            .nav-cta { display: none; }

            .nav-toggle { display: flex; }

            .hero { min-height: 600px; padding: 130px 0 70px; }

            .hero-trust { gap: 14px; font-size: 13px; }

            .feature-img { height: 170px; }

            .stat-item { padding: 20px 8px; }

            .stat-number { font-size: 28px; }

            .cta-card { padding: 50px 24px; }

            .step-item { padding: 28px 18px 24px; }
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }

/* roulang page: article */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-rgb: 37, 99, 235;
            --accent: #f59e0b;
            --accent-rgb: 245, 158, 11;
            --dark: #0f172a;
            --dark-2: #1e293b;
            --gray: #64748b;
            --gray-light: #94a3b8;
            --bg: #f1f5f9;
            --surface: #ffffff;
            --border: #e2e8f0;
            --radius-sm: 10px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.06);
            --shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 20px 60px rgba(15, 23, 42, 0.12);
            --transition: all 0.25s ease;
            --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            font-family: var(--font-body);
            background: var(--bg);
            color: var(--dark);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== Header & Dock Nav ===== */
        .site-header {
            position: fixed;
            top: 14px;
            left: 0;
            right: 0;
            z-index: 1050;
            padding: 0 20px;
        }
        .site-nav {
            max-width: 1200px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, 0.65);
            border-radius: 60px;
            padding: 8px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
            transition: var(--transition);
        }
        .site-nav:hover {
            box-shadow: 0 12px 40px rgba(15, 23, 42, 0.12);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--dark);
            flex-shrink: 0;
        }
        .nav-logo:hover {
            color: var(--dark);
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.35);
        }
        .logo-text {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 0.5px;
            white-space: nowrap;
            background: linear-gradient(135deg, var(--dark), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 600;
            color: var(--gray);
            text-decoration: none;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(var(--primary-rgb), 0.06);
        }
        .nav-link.active {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 14px rgba(var(--primary-rgb), 0.3);
        }
        .nav-link.active:hover {
            color: #fff;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 22px;
            border-radius: 40px;
            background: linear-gradient(135deg, var(--accent), #ea8f00);
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            text-decoration: none;
            box-shadow: 0 4px 14px rgba(var(--accent-rgb), 0.35);
            transition: var(--transition);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(var(--accent-rgb), 0.42);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 10px;
            width: 40px;
            height: 40px;
            font-size: 16px;
            color: var(--dark);
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 170px 0 90px;
            color: #fff;
            overflow: hidden;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 60%, rgba(37, 99, 235, 0.9) 100%);
        }
        .article-hero .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.3;
        }
        .article-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.6) 0%, rgba(30, 58, 138, 0.45) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
        }
        .breadcrumb-nav {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 24px;
        }
        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb-nav a:hover {
            color: var(--accent);
        }
        .breadcrumb-nav span {
            opacity: 0.5;
        }
        .hero-category {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 40px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
            color: #fff;
            backdrop-filter: blur(6px);
        }
        .hero-category i {
            color: var(--accent);
        }
        .hero-content h1 {
            font-size: clamp(30px, 4.2vw, 48px);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .hero-desc {
            font-size: 16px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 24px;
        }
        .hero-meta {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .hero-meta i {
            color: var(--accent);
        }

        /* ===== Article Main ===== */
        .article-main-section {
            padding: 60px 0 40px;
        }
        .article-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 44px;
            border: 1px solid rgba(255, 255, 255, 0.8);
            transition: var(--transition);
        }
        .article-body {
            font-size: 15.5px;
            line-height: 1.85;
            color: #334155;
        }
        .article-body h2 {
            font-size: 24px;
            font-weight: 800;
            color: var(--dark);
            margin: 32px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--bg);
            letter-spacing: -0.3px;
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin: 28px 0 12px;
        }
        .article-body h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            margin: 22px 0 10px;
        }
        .article-body p {
            margin-bottom: 16px;
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0 20px;
            padding-left: 24px;
        }
        .article-body ul li,
        .article-body ol li {
            margin-bottom: 8px;
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: #fffbeb;
            padding: 18px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
            font-style: normal;
            color: #78350f;
            font-size: 15px;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 20px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover {
            color: var(--primary-dark);
        }
        .article-body code {
            background: #f1f5f9;
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 2px 8px;
            font-size: 13px;
            font-family: "SF Mono", "Consolas", monospace;
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 30px;
        }
        .not-found-box i {
            font-size: 52px;
            color: var(--gray-light);
            margin-bottom: 20px;
            display: block;
        }
        .not-found-box h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--gray);
            margin-bottom: 28px;
        }
        .not-found-box .btn {
            padding: 12px 36px;
            border-radius: 50px;
            font-weight: 600;
        }

        /* ===== Tags ===== */
        .article-tags {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 20px 28px;
            margin-top: 24px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .tags-label {
            font-weight: 700;
            color: var(--dark);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .tags-label i {
            color: var(--accent);
        }
        .tag-badge {
            background: var(--bg);
            color: var(--gray);
            border: 1px solid var(--border);
            border-radius: 40px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            transition: var(--transition);
        }
        .tag-badge:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .sidebar-card:hover {
            box-shadow: var(--shadow);
        }
        .sidebar-card-header {
            font-size: 16px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
            border-bottom: 2px solid var(--bg);
            padding-bottom: 14px;
        }
        .sidebar-card-header i {
            color: var(--primary);
        }
        .article-info-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .article-info-list li {
            display: flex;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 14px;
        }
        .article-info-list li:last-child {
            border-bottom: none;
        }
        .article-info-list span {
            color: var(--gray);
        }
        .article-info-list a {
            font-weight: 600;
            color: var(--primary);
        }
        .sidebar-nav {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-nav li {
            margin-bottom: 8px;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 16px;
            border-radius: var(--radius-sm);
            background: var(--bg);
            color: var(--dark);
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
        }
        .sidebar-nav a:hover {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding-left: 22px;
            box-shadow: 0 4px 14px rgba(var(--primary-rgb), 0.25);
        }
        .sidebar-nav a i {
            font-size: 12px;
            opacity: 0.6;
            transition: var(--transition);
        }
        .sidebar-nav a:hover i {
            opacity: 1;
        }
        .sidebar-recommend {
            text-align: center;
        }
        .sidebar-recommend img {
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-recommend h5 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .sidebar-recommend h5 a {
            color: var(--dark);
        }
        .sidebar-recommend h5 a:hover {
            color: var(--primary);
        }
        .sidebar-recommend p {
            font-size: 13px;
            color: var(--gray);
            margin-bottom: 0;
        }

        /* ===== Related ===== */
        .related-section {
            padding: 60px 0;
            background: var(--surface);
        }
        .section-heading {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 44px;
        }
        .section-tag {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 40px;
            background: rgba(var(--primary-rgb), 0.08);
            color: var(--primary);
            font-weight: 700;
            font-size: 13px;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }
        .section-heading h2 {
            font-size: clamp(26px, 3.4vw, 34px);
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .section-heading p {
            font-size: 15px;
            color: var(--gray);
            margin-bottom: 0;
        }
        .related-card {
            display: block;
            background: var(--bg);
            border-radius: var(--radius);
            padding: 24px;
            transition: var(--transition);
            border: 1px solid transparent;
            text-align: left;
            text-decoration: none;
            height: 100%;
        }
        .related-card:hover {
            transform: translateY(-6px);
            background: #fff;
            box-shadow: var(--shadow-lg);
            border-color: var(--border);
            text-decoration: none;
        }
        .related-card img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            margin-bottom: 18px;
            transition: var(--transition);
        }
        .related-card:hover img {
            transform: scale(1.02);
        }
        .related-card .badge {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 40px;
            font-size: 12px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent), #ea8f00);
            color: #fff;
            margin-bottom: 10px;
        }
        .related-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
            transition: var(--transition);
        }
        .related-card:hover h3 {
            color: var(--primary);
        }
        .related-card p {
            font-size: 14px;
            color: var(--gray);
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 460px;
            height: 460px;
            background: rgba(var(--accent-rgb), 0.15);
            border-radius: 50%;
            filter: blur(80px);
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
        }
        .cta-inner h2 {
            font-size: clamp(26px, 3.2vw, 36px);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 30px;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-cta-primary {
            display: inline-block;
            padding: 14px 36px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--accent), #ea8f00);
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            text-decoration: none;
            box-shadow: 0 6px 24px rgba(var(--accent-rgb), 0.4);
            transition: var(--transition);
        }
        .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(var(--accent-rgb), 0.5);
            color: #fff;
        }
        .btn-cta-outline {
            display: inline-block;
            padding: 14px 36px;
            border-radius: 50px;
            border: 1px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            text-decoration: none;
            backdrop-filter: blur(6px);
            transition: var(--transition);
        }
        .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0b1220;
            color: rgba(255, 255, 255, 0.7);
            padding: 70px 0 0;
            position: relative;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 44px;
        }
        .footer-brand .logo-icon {
            margin-bottom: 14px;
        }
        .footer-brand .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            background: none;
            -webkit-text-fill-color: #fff;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 14px;
            max-width: 280px;
        }
        .footer-links-col h4,
        .footer-info-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-links-col h4::after,
        .footer-info-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 32px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }
        .footer-links-col ul,
        .footer-info-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links-col ul li,
        .footer-info-col ul li {
            margin-bottom: 12px;
        }
        .footer-links-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            text-decoration: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer-links-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-info-col ul li {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-info-col ul li i {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-card {
                padding: 32px;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .site-header {
                top: 10px;
                padding: 0 14px;
            }
            .site-nav {
                padding: 8px 16px;
                border-radius: 50px;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: calc(100% + 10px);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: 20px;
                padding: 16px;
                box-shadow: var(--shadow-lg);
                border: 1px solid var(--border);
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-link {
                padding: 12px 18px;
                border-radius: 12px;
            }
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .nav-cta {
                display: none;
            }
            .article-hero {
                padding: 140px 0 60px;
            }
            .hero-meta {
                flex-direction: column;
                gap: 8px;
            }
            .article-main-section {
                padding: 40px 0 30px;
            }
            .article-card {
                padding: 24px;
                border-radius: var(--radius);
            }
            .article-sidebar {
                position: static;
                margin-top: 30px;
            }
            .cta-section {
                padding: 50px 0;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .logo-text {
                font-size: 16px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 13px;
            }
            .site-nav {
                padding: 6px 12px;
            }
            .article-card {
                padding: 18px;
            }
            .article-tags {
                padding: 16px 18px;
            }
            .related-card {
                padding: 16px;
            }
            .related-card img {
                height: 140px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #eff6ff;
            --secondary: #0ea5e9;
            --accent: #f59e0b;
            --dark: #0f172a;
            --gray-bg: #f8fafc;
            --text: #1e293b;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 12px rgba(15, 23, 42, .06);
            --shadow-md: 0 8px 30px rgba(15, 23, 42, .08);
            --shadow-lg: 0 20px 50px rgba(37, 99, 235, .12);
            --transition: all .3s ease;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            color: var(--text);
            background: #fff;
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 1000;
            display: flex;
            justify-content: center;
            padding: 0 20px;
            pointer-events: none;
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            background: rgba(255, 255, 255, .88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, .6);
            box-shadow: 0 8px 40px rgba(15, 23, 42, .12);
            border-radius: 60px;
            padding: 10px 24px;
            max-width: 1180px;
            width: 100%;
            pointer-events: auto;
            transition: var(--transition);
        }

        .site-nav:hover {
            box-shadow: 0 12px 48px rgba(15, 23, 42, .16);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 22px;
            color: var(--text);
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 4px 14px rgba(37, 99, 235, .35);
        }

        .logo-text {
            background: linear-gradient(120deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            padding: 8px 16px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-weak);
            white-space: nowrap;
            transition: var(--transition);
        }

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

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 700;
        }

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

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            padding: 10px 20px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(37, 99, 235, .3);
            transition: var(--transition);
            border: none;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, .4);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text);
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .page-banner {
            background: linear-gradient(135deg, rgba(15, 23, 42, .82), rgba(37, 99, 235, .76)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 160px 0 80px;
            position: relative;
            color: #fff;
            text-align: center;
        }

        .page-banner .page-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .18);
            border: 1px solid rgba(255, 255, 255, .28);
            backdrop-filter: blur(8px);
            border-radius: 40px;
            padding: 6px 18px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }

        .page-banner h1 {
            font-size: 48px;
            font-weight: 800;
            letter-spacing: 1px;
            margin-bottom: 16px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, .2);
        }

        .page-banner .banner-lead {
            font-size: 18px;
            opacity: .92;
            max-width: 680px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }

        .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, .75);
            background: rgba(255, 255, 255, .1);
            padding: 8px 20px;
            border-radius: 40px;
            backdrop-filter: blur(6px);
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, .85);
            font-weight: 500;
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb i {
            font-size: 12px;
        }

        .section-block {
            padding: 90px 0;
        }

        .section-block.light-bg {
            background: var(--gray-bg);
        }

        .section-head {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            padding: 6px 16px;
            border-radius: 40px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .section-head h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 14px;
            letter-spacing: -1px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-weak);
            max-width: 640px;
            margin: 0 auto;
        }

        .overview-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(226, 232, 240, .6);
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .overview-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }

        .overview-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .overview-card .stat-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .overview-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .overview-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin: 0;
        }

        .help-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .help-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, .2);
        }

        .help-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            height: 190px;
        }

        .help-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .help-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }

        .card-cat-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(6px);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 40px;
            letter-spacing: 1px;
        }

        .help-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .help-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .help-card .card-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .card-link {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .card-link:hover {
            gap: 12px;
            color: var(--primary-dark);
        }

        .process-section {
            background: linear-gradient(145deg, #0f172a, #1e293b);
            color: #fff;
        }

        .process-section .section-head h2 {
            color: #fff;
        }

        .process-section .section-head p {
            color: rgba(255, 255, 255, .7);
        }

        .process-section .section-tag {
            background: rgba(255, 255, 255, .12);
            color: #93c5fd;
        }

        .process-step {
            text-align: center;
            padding: 36px 24px;
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius-lg);
            height: 100%;
            position: relative;
            transition: var(--transition);
        }

        .process-step:hover {
            background: rgba(255, 255, 255, .08);
            border-color: rgba(147, 197, 253, .3);
            transform: translateY(-4px);
        }

        .step-num {
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 48px;
            font-weight: 800;
            color: rgba(255, 255, 255, .08);
            line-height: 1;
        }

        .step-icon {
            width: 64px;
            height: 64px;
            border-radius: 20px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #fff;
            margin: 0 auto 20px;
            box-shadow: 0 8px 24px rgba(37, 99, 235, .35);
        }

        .process-step h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
        }

        .process-step p {
            font-size: 14px;
            color: rgba(255, 255, 255, .7);
            line-height: 1.7;
            margin: 0;
        }

        .article-list-wrap {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .article-list-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            border-bottom: 1px solid #f1f5f9;
            transition: var(--transition);
        }

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

        .article-list-item:hover {
            background: #f8fafc;
        }

        .article-list-item .article-rank {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 14px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

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

        .article-list-item .article-info h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .article-list-item .article-info p {
            font-size: 13px;
            color: var(--text-weak);
            margin: 0;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .article-list-item .article-meta {
            font-size: 13px;
            color: var(--text-weak);
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-list-item .article-arrow {
            color: #cbd5e1;
            font-size: 14px;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .article-list-item:hover .article-arrow {
            color: var(--primary);
            transform: translateX(4px);
        }

        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            margin-bottom: 16px;
            transition: var(--transition);
            cursor: pointer;
        }

        .faq-item:hover {
            border-color: rgba(37, 99, 235, .3);
            box-shadow: var(--shadow-sm);
        }

        .faq-item summary {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            position: relative;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .faq-item[open] .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-item .faq-answer {
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid #f1f5f9;
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.8;
        }

        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -80%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .06);
        }

        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            color: #fff;
        }

        .cta-content h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-content p {
            font-size: 16px;
            opacity: .9;
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-cta-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--primary);
            font-size: 16px;
            font-weight: 700;
            padding: 14px 36px;
            border-radius: 50px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, .15);
            transition: var(--transition);
            border: none;
        }

        .btn-cta-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, .2);
            color: var(--primary-dark);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: 2px solid rgba(255, 255, 255, .6);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            padding: 14px 36px;
            border-radius: 50px;
            transition: var(--transition);
            background: transparent;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-3px);
        }

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

        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 70px 0 30px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand .logo-icon {
            margin-bottom: 16px;
        }

        .footer-brand .logo-text {
            font-size: 22px;
            font-weight: 800;
            background: linear-gradient(120deg, #fff, #93c5fd);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-top: 14px;
            color: #64748b;
        }

        .footer-links-col h4 {
            font-size: 16px;
            color: #fff;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .footer-links-col ul li {
            margin-bottom: 12px;
        }

        .footer-links-col ul li a {
            color: #94a3b8;
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-links-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-info-col h4 {
            font-size: 16px;
            color: #fff;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .footer-info-col ul li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #94a3b8;
            margin-bottom: 14px;
        }

        .footer-info-col ul li i {
            color: var(--primary);
            width: 20px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #64748b;
        }

        @media (max-width: 1024px) {
            .site-nav {
                gap: 20px;
                padding: 10px 18px;
            }

            .nav-link {
                padding: 8px 12px;
                font-size: 13px;
            }

            .nav-cta {
                padding: 8px 16px;
                font-size: 13px;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                top: 12px;
            }

            .site-nav {
                flex-wrap: wrap;
            }

            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 12px 0 4px;
            }

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

            .nav-link {
                text-align: center;
                padding: 12px;
                font-size: 15px;
            }

            .nav-actions {
                margin-left: auto;
            }

            .nav-toggle {
                display: flex;
            }

            .page-banner {
                padding: 130px 0 60px;
            }

            .page-banner h1 {
                font-size: 32px;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .section-block {
                padding: 60px 0;
            }

            .cta-content h2 {
                font-size: 28px;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .site-nav {
                padding: 10px 14px;
            }

            .nav-logo .logo-text {
                font-size: 18px;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }

            .nav-cta {
                display: none;
            }

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

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

            .section-head h2 {
                font-size: 24px;
            }

            .overview-card {
                padding: 28px 20px;
            }

            .help-card .card-body {
                padding: 20px 16px;
            }

            .process-step {
                padding: 28px 16px;
            }

            .faq-item {
                padding: 18px 20px;
            }

            .faq-item summary {
                font-size: 15px;
            }

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

            .btn-cta-light,
            .btn-outline-light {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1e3a8a;
            --primary-dark: #172f6b;
            --primary-rgb: 30, 58, 138;
            --accent: #0891b2;
            --accent-dark: #0f7f94;
            --bg: #f5f7fb;
            --bg-soft: #f0f4ff;
            --surface: #ffffff;
            --text: #0f172a;
            --text-muted: #5b6b83;
            --border: #e1e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 24px 48px rgba(15, 23, 42, 0.12);
            --spacer: 70px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        section[id],
        div[id] {
            scroll-margin-top: 100px;
        }

        body {
            margin: 0;
            font-family: "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

        .container {
            max-width: 1180px;
        }

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

        .section-head {
            max-width: 680px;
            margin-bottom: 42px;
        }

        .section-head.text-center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent);
            font-weight: 700;
            font-size: 14px;
            letter-spacing: 1px;
            margin-bottom: 10px;
        }

        .section-head h2 {
            font-size: clamp(26px, 3.2vw, 36px);
            font-weight: 800;
            color: var(--text);
            margin-bottom: 14px;
            line-height: 1.3;
        }

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

        .btn-app {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border-radius: 999px;
            padding: 12px 26px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            transition: all 0.25s ease;
        }

        .btn-app-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 20px rgba(var(--primary-rgb), 0.28);
        }

        .btn-app-primary:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(var(--primary-rgb), 0.32);
        }

        .btn-app-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid rgba(var(--primary-rgb), 0.35);
        }

        .btn-app-outline:hover {
            background: rgba(var(--primary-rgb), 0.06);
            color: var(--primary-dark);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-app-light {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.35);
        }

        .btn-app-light:hover {
            background: rgba(255, 255, 255, 0.22);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.55);
            transform: translateY(-2px);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
            padding: 14px 20px;
            background: transparent;
        }

        .site-nav {
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, 0.6);
            border-radius: 60px;
            padding: 10px 18px;
            box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 18px;
            color: var(--text);
            white-space: nowrap;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            flex-shrink: 0;
        }

        .logo-text {
            letter-spacing: -0.2px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 999px;
            font-weight: 500;
            font-size: 14px;
            color: var(--text);
            transition: all 0.22s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            background: rgba(var(--primary-rgb), 0.08);
            color: var(--primary);
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 6px 16px rgba(var(--primary-rgb), 0.28);
        }

        .nav-link.active:hover {
            background: var(--primary);
            color: #fff;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            border-radius: 999px;
            padding: 9px 18px;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(8, 145, 178, 0.3);
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border: none;
            background: rgba(var(--primary-rgb), 0.08);
            border-radius: 50%;
            color: var(--primary);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
        }

        .nav-toggle:hover {
            background: rgba(var(--primary-rgb), 0.15);
        }

        .category-hero {
            position: relative;
            padding: 130px 0 90px;
            background: linear-gradient(100deg, rgba(255, 255, 255, 0.96) 20%, rgba(244, 248, 255, 0.82) 55%, rgba(224, 242, 254, 0.65) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
        }

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

        .hero-breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }

        .hero-breadcrumb a:hover {
            color: var(--accent);
        }

        .breadcrumb-sep {
            color: #94a3b8;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(var(--primary-rgb), 0.1);
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            padding: 8px 16px;
            border-radius: 999px;
            margin-bottom: 20px;
        }

        .hero-badge i {
            color: var(--accent);
        }

        .category-hero h1 {
            font-size: clamp(30px, 5vw, 54px);
            font-weight: 800;
            line-height: 1.2;
            color: var(--text);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .category-hero h1 br {
            display: none;
        }

        .category-hero p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 640px;
            line-height: 1.85;
            margin-bottom: 32px;
        }

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

        .anchor-bar {
            position: relative;
            z-index: 5;
            margin-top: -30px;
        }

        .anchor-bar .container {
            background: #fff;
            border-radius: 18px;
            box-shadow: var(--shadow);
            padding: 14px 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 10px;
            border: 1px solid rgba(226, 232, 240, 0.7);
        }

        .anchor-bar a {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            transition: all 0.2s ease;
        }

        .anchor-bar a:hover {
            background: rgba(var(--primary-rgb), 0.08);
            color: var(--primary);
        }

        .stats-section {
            padding: 60px 0 20px;
        }

        .stat-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            height: 100%;
            transition: all 0.28s ease;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .stat-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-num span {
            font-size: 16px;
            font-weight: 700;
            color: var(--accent);
            margin-left: 2px;
        }

        .stat-label {
            color: var(--text-muted);
            font-size: 14px;
            margin-top: 8px;
        }

        .steps-section {
            background: var(--bg-soft);
        }

        .step-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            height: 100%;
            position: relative;
            transition: all 0.28s ease;
        }

        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(var(--primary-rgb), 0.18);
        }

        .step-num {
            position: absolute;
            top: 22px;
            right: 24px;
            font-size: 32px;
            font-weight: 800;
            color: rgba(var(--primary-rgb), 0.1);
            line-height: 1;
        }

        .step-icon {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.1), rgba(8, 145, 178, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 20px;
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        .content-section {
            background: #fff;
        }

        .article-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            overflow: hidden;
            height: 100%;
            transition: all 0.3s ease;
        }

        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .article-thumb {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

        .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

        .article-card:hover .article-thumb img {
            transform: scale(1.06);
        }

        .article-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, 0.94);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            box-shadow: 0 4px 14px rgba(15, 23, 42, 0.08);
        }

        .article-body {
            padding: 22px 24px 24px;
        }

        .article-body h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
        }

        .article-body h3 a {
            color: var(--text);
            transition: color 0.2s ease;
        }

        .article-body h3 a:hover {
            color: var(--primary);
        }

        .article-body p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 18px;
            line-height: 1.75;
        }

        .article-more {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            transition: gap 0.25s ease, color 0.25s ease;
        }

        .article-more:hover {
            color: var(--accent);
            gap: 11px;
        }

        .quick-section {
            background: var(--bg);
        }

        .quick-card {
            display: block;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            height: 100%;
            transition: all 0.28s ease;
        }

        .quick-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(8, 145, 178, 0.2);
        }

        .quick-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(8, 145, 178, 0.1);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
        }

        .quick-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

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

        .quick-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            transition: gap 0.25s ease, color 0.25s ease;
        }

        .quick-card:hover .quick-link {
            gap: 10px;
            color: var(--accent);
        }

        .tips-section {
            background: #fff;
        }

        .tips-box {
            display: flex;
            gap: 28px;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            border-left: 5px solid var(--accent);
            padding: 38px 40px;
            box-shadow: var(--shadow);
            align-items: flex-start;
        }

        .tips-icon {
            color: var(--accent);
            font-size: 34px;
            flex-shrink: 0;
            margin-top: 4px;
        }

        .tips-content h2 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text);
        }

        .tips-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            gap: 14px;
        }

        .tips-list li {
            display: flex;
            gap: 10px;
            color: var(--text);
            font-size: 15px;
            line-height: 1.7;
        }

        .tips-list li i {
            color: var(--accent);
            margin-top: 4px;
            flex-shrink: 0;
        }

        .faq-section {
            background: var(--bg-soft);
        }

        .faq-section .accordion {
            max-width: 900px;
            margin: 0 auto;
        }

        .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            background: #fff;
            box-shadow: 0 4px 14px rgba(15, 23, 42, 0.05);
            overflow: hidden;
        }

        .accordion-item:last-child {
            margin-bottom: 0;
        }

        .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            padding: 20px 24px;
            background: #fff;
            border: none;
            box-shadow: none;
        }

        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: #f4f7ff;
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.14);
        }

        .accordion-button::after {
            background-size: 14px;
        }

        .accordion-body {
            padding: 6px 24px 22px;
            color: var(--text-muted);
            line-height: 1.85;
            font-size: 15px;
        }

        .cta-section {
            position: relative;
            padding: 90px 0;
            background: linear-gradient(130deg, rgba(15, 23, 42, 0.92), rgba(30, 58, 138, 0.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(26px, 3.4vw, 38px);
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 620px;
            margin: 0 auto 32px;
        }

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

        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 64px 0 32px;
            font-size: 14px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 44px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 28px;
        }

        .footer-brand .logo-icon {
            background: var(--accent);
            margin-bottom: 14px;
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }

        .footer-brand p {
            margin-top: 14px;
            color: #94a3b8;
            line-height: 1.8;
            max-width: 280px;
        }

        .footer-links-col h4,
        .footer-info-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-links-col ul,
        .footer-info-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            gap: 10px;
        }

        .footer-links-col li a {
            color: #94a3b8;
            transition: color 0.2s ease;
        }

        .footer-links-col li a:hover {
            color: #fff;
        }

        .footer-info-col li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #94a3b8;
        }

        .footer-info-col li i {
            color: var(--accent);
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
            color: #64748b;
            font-size: 13px;
        }

        .footer-bottom p {
            margin: 0;
        }

        @media (max-width: 1024px) {
            .site-header {
                padding: 12px 16px;
            }

            .site-nav {
                padding: 9px 14px;
            }

            .nav-link {
                padding: 8px 13px;
                font-size: 13px;
            }

            .category-hero {
                padding: 110px 0 80px;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 991px) {
            .nav-cta {
                padding: 8px 14px;
                font-size: 13px;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .nav-menu {
                position: absolute;
                top: calc(100% + 14px);
                right: 0;
                left: 0;
                background: #fff;
                border-radius: 18px;
                box-shadow: var(--shadow-lg);
                border: 1px solid var(--border);
                flex-direction: column;
                align-items: stretch;
                padding: 14px;
                gap: 6px;
                display: none;
            }

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

            .nav-link {
                padding: 12px 16px;
                font-size: 15px;
                border-radius: 12px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacer: 56px;
            }

            .category-hero {
                padding: 100px 0 70px;
            }

            .category-hero h1 {
                font-size: 34px;
            }

            .category-hero p {
                font-size: 16px;
            }

            .anchor-bar {
                margin-top: -22px;
            }

            .hero-actions .btn-app {
                padding: 10px 20px;
                font-size: 14px;
            }

            .tips-box {
                flex-direction: column;
                gap: 18px;
                padding: 28px 24px;
            }

            .tips-icon {
                font-size: 28px;
            }

            .cta-section {
                padding: 70px 0;
            }
        }

        @media (max-width: 520px) {
            .site-header {
                padding: 10px 12px;
            }

            .site-nav {
                padding: 8px 12px;
                border-radius: 40px;
            }

            .logo-text {
                font-size: 16px;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 14px;
            }

            .nav-cta {
                width: 38px;
                height: 38px;
                padding: 0;
                justify-content: center;
                font-size: 0;
                border-radius: 50%;
            }

            .nav-cta i {
                font-size: 15px;
            }

            .category-hero {
                padding: 90px 0 60px;
            }

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

            .category-hero p {
                font-size: 15px;
            }

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

            .anchor-bar .container {
                gap: 6px;
                padding: 12px;
            }

            .anchor-bar a {
                padding: 6px 12px;
                font-size: 13px;
            }

            .stat-num {
                font-size: 28px;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .section-head p {
                font-size: 15px;
            }

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

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

/* roulang page: category3 */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #eff4ff;
            --accent: #06b6d4;
            --bg: #f5f7fb;
            --bg-alt: #0f172a;
            --white: #ffffff;
            --text: #0f172a;
            --text-light: #5b6b82;
            --text-lighter: #94a3b8;
            --border: #e2e8f0;
            --radius-sm: 10px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, .04);
            --shadow: 0 12px 32px rgba(15, 23, 42, .06);
            --shadow-lg: 0 20px 48px rgba(30, 64, 175, .12);
            --transition: all .3s ease;
            --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        h1,
        h2,
        h3,
        h4,
        h5 {
            color: var(--text);
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 .5em;
        }

        p {
            margin: 0 0 1em;
            color: var(--text-light);
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .btn-site {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, .3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, .4);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .btn-light {
            background: rgba(255, 255, 255, .16);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .35);
            backdrop-filter: blur(8px);
        }

        .btn-light:hover {
            background: rgba(255, 255, 255, .28);
            color: #fff;
            transform: translateY(-2px);
        }

        .site-header {
            position: sticky;
            top: 16px;
            z-index: 1000;
            padding: 0 20px;
            margin-top: 16px;
        }

        .site-nav {
            max-width: 1150px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, .86);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, .6);
            border-radius: 24px;
            padding: 10px 20px;
            box-shadow: 0 8px 30px rgba(15, 23, 42, .08);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(37, 99, 235, .3);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: .5px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-link {
            padding: 8px 16px;
            border-radius: 12px;
            color: var(--text-light);
            font-weight: 500;
            font-size: 15px;
            white-space: nowrap;
        }

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

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

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

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            box-shadow: 0 4px 14px rgba(37, 99, 235, .3);
        }

        .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, .4);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            border: none;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: var(--primary);
            color: #fff;
        }

        .section-block {
            padding: 90px 0;
        }

        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 50px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 30px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: .5px;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 34px;
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-light);
        }

        .page-banner {
            position: relative;
            padding: 110px 0 80px;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-color: var(--primary-dark);
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 58, 138, .92), rgba(6, 182, 212, .68));
            z-index: 1;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .banner-content {
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
            color: #fff;
        }

        .banner-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 30px;
            background: rgba(255, 255, 255, .18);
            border: 1px solid rgba(255, 255, 255, .28);
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 20px;
            backdrop-filter: blur(6px);
        }

        .banner-content h1 {
            color: #fff;
            font-size: 44px;
            line-height: 1.2;
            margin-bottom: 18px;
            font-weight: 800;
        }

        .banner-content p {
            color: rgba(255, 255, 255, .88);
            font-size: 17px;
            max-width: 620px;
            margin: 0 auto 28px;
        }

        .banner-search {
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, .95);
            border-radius: 16px;
            padding: 8px 8px 8px 18px;
            box-shadow: 0 12px 40px rgba(15, 23, 42, .18);
            max-width: 560px;
            margin: 0 auto 20px;
            backdrop-filter: blur(8px);
        }

        .banner-search i {
            color: var(--text-lighter);
            font-size: 16px;
        }

        .banner-search input {
            flex: 1;
            border: none;
            outline: none;
            background: transparent;
            font-size: 15px;
            color: var(--text);
            padding: 8px 0;
        }

        .banner-search input::placeholder {
            color: var(--text-lighter);
        }

        .banner-search .btn-site {
            padding: 10px 22px;
        }

        .banner-quick {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 14px;
            color: rgba(255, 255, 255, .8);
            font-size: 14px;
            flex-wrap: wrap;
        }

        .banner-quick a {
            color: #fff;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .25);
            padding: 5px 14px;
            border-radius: 30px;
            font-size: 14px;
            transition: var(--transition);
        }

        .banner-quick a:hover {
            background: #fff;
            color: var(--primary);
        }

        .banner-stats {
            display: flex;
            gap: 40px;
            justify-content: center;
            margin-top: 44px;
            color: #fff;
        }

        .banner-stats .stat-num {
            font-size: 32px;
            font-weight: 800;
            display: block;
            line-height: 1.2;
        }

        .banner-stats .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, .75);
            display: block;
        }

        .bg-white {
            background: var(--white);
        }

        .help-card {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
        }

        .help-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: rgba(37, 99, 235, .2);
        }

        .help-card-img {
            height: 170px;
            overflow: hidden;
            position: relative;
        }

        .help-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .help-card:hover .help-card-img img {
            transform: scale(1.05);
        }

        .help-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(15, 23, 42, .18));
        }

        .help-card-body {
            padding: 26px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .help-card-body h3 {
            font-size: 20px;
            margin-bottom: 8px;
        }

        .help-card-body>p {
            font-size: 14px;
            color: var(--text-light);
            flex: 1;
        }

        .help-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin: 14px 0 18px;
        }

        .help-tags span {
            padding: 4px 12px;
            border-radius: 30px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
        }

        .help-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 15px;
            color: var(--primary);
        }

        .help-card-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

        .topic-item {
            display: flex;
            align-items: center;
            gap: 24px;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 26px 28px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .topic-item:hover {
            box-shadow: var(--shadow);
            transform: translateX(4px);
            border-color: rgba(37, 99, 235, .25);
        }

        .topic-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            opacity: .25;
            line-height: 1;
            min-width: 50px;
        }

        .topic-content {
            flex: 1;
        }

        .topic-content h3 {
            font-size: 18px;
            margin-bottom: 4px;
        }

        .topic-content p {
            font-size: 14px;
            margin: 0;
            color: var(--text-light);
        }

        .topic-meta {
            display: flex;
            gap: 16px;
            margin-top: 10px;
            font-size: 13px;
            color: var(--text-lighter);
        }

        .topic-meta i {
            margin-right: 4px;
        }

        .topic-link {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .topic-link:hover {
            background: var(--primary);
            color: #fff;
            transform: rotate(-45deg);
        }

        .process-section {
            background: var(--bg-alt);
            position: relative;
            overflow: hidden;
        }

        .process-section::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(37, 99, 235, .3), transparent 70%);
            top: -200px;
            right: -200px;
        }

        .process-section .container {
            position: relative;
            z-index: 2;
        }

        .process-section .section-head h2 {
            color: #fff;
        }

        .process-section .section-head p {
            color: rgba(255, 255, 255, .65);
        }

        .process-step {
            background: rgba(255, 255, 255, .07);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--radius);
            padding: 32px 26px;
            height: 100%;
            transition: var(--transition);
            backdrop-filter: blur(6px);
        }

        .process-step:hover {
            background: rgba(255, 255, 255, .12);
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, .25);
        }

        .process-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 24px;
            margin-bottom: 20px;
            box-shadow: 0 8px 24px rgba(37, 99, 235, .35);
        }

        .process-step h3 {
            color: #fff;
            font-size: 20px;
            margin-bottom: 8px;
        }

        .process-step p {
            color: rgba(255, 255, 255, .7);
            font-size: 14px;
            margin: 0;
        }

        .process-step .step-num {
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 40px;
            font-weight: 800;
            color: rgba(255, 255, 255, .1);
        }

        .process-step {
            position: relative;
        }

        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius) !important;
            margin-bottom: 14px;
            overflow: hidden;
            background: var(--white);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .accordion-item:hover {
            box-shadow: var(--shadow);
        }

        .accordion-button {
            box-shadow: none !important;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            padding: 20px 24px;
            background: var(--white);
            border: none;
        }

        .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: none !important;
        }

        .accordion-button:focus {
            box-shadow: none !important;
        }

        .accordion-button::after {
            background-size: 14px;
            transition: var(--transition);
        }

        .accordion-body {
            padding: 0 24px 24px;
            color: var(--text-light);
            font-size: 15px;
        }

        .cta-section {
            padding: 90px 0;
            background: linear-gradient(135deg, #eef2ff, #e0f2fe);
        }

        .cta-box {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
            top: -80px;
            left: -80px;
        }

        .cta-box::after {
            content: '';
            position: absolute;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .06);
            bottom: -50px;
            right: -40px;
        }

        .cta-box>* {
            position: relative;
            z-index: 2;
        }

        .cta-icon {
            width: 70px;
            height: 70px;
            border-radius: 20px;
            background: rgba(255, 255, 255, .18);
            border: 1px solid rgba(255, 255, 255, .25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            margin: 0 auto 20px;
        }

        .cta-box h2 {
            color: #fff;
            font-size: 30px;
            margin-bottom: 10px;
        }

        .cta-box p {
            color: rgba(255, 255, 255, .85);
            max-width: 520px;
            margin: 0 auto 30px;
        }

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

        .cta-buttons .btn-primary {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(15, 23, 42, .15);
        }

        .cta-buttons .btn-primary:hover {
            background: #f1f5f9;
            color: var(--primary-dark);
        }

        .cta-buttons .btn-outline {
            border-color: rgba(255, 255, 255, .7);
            color: #fff;
        }

        .cta-buttons .btn-outline:hover {
            background: rgba(255, 255, 255, .16);
            color: #fff;
        }

        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, .75);
            padding: 70px 0 0;
            margin-top: 0;
        }

        .site-footer .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }

        .footer-brand .logo-icon {
            width: 42px;
            height: 42px;
            margin-bottom: 16px;
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 20px;
            margin-left: 10px;
        }

        .footer-brand p {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            margin-top: 12px;
            max-width: 320px;
            line-height: 1.8;
        }

        .footer-links-col h4,
        .footer-info-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 16px;
            font-weight: 600;
        }

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

        .footer-links-col li,
        .footer-info-col li {
            margin-bottom: 10px;
        }

        .footer-links-col a {
            color: rgba(255, 255, 255, .65);
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-links-col a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-info-col li {
            color: rgba(255, 255, 255, .65);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-info-col i {
            color: var(--accent);
            width: 16px;
        }

        .footer-bottom {
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            color: rgba(255, 255, 255, .4);
            font-size: 13px;
        }

        .footer-bottom p {
            margin: 0;
            color: rgba(255, 255, 255, .4);
            font-size: 13px;
        }

        @media (max-width: 1024px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .help-card-img {
                height: 150px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                padding: 0 12px;
                margin-top: 10px;
            }

            .site-nav {
                padding: 8px 14px;
                border-radius: 20px;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-menu {
                position: fixed;
                top: 78px;
                left: 12px;
                right: 12px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                background: rgba(255, 255, 255, .98);
                border: 1px solid var(--border);
                border-radius: 16px;
                padding: 14px;
                box-shadow: var(--shadow-lg);
                opacity: 0;
                visibility: hidden;
                transform: translateY(-8px);
                transition: var(--transition);
            }

            .nav-menu.nav-open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }

            .nav-menu .nav-link {
                padding: 12px 16px;
                font-size: 15px;
            }

            .nav-cta {
                display: none;
            }

            .page-banner {
                padding: 80px 0 60px;
            }

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

            .banner-content p {
                font-size: 15px;
            }

            .banner-search {
                flex-wrap: wrap;
                padding: 12px;
            }

            .banner-search input {
                flex: 1 1 100%;
                margin-bottom: 8px;
                padding: 8px 4px;
            }

            .banner-search .btn-site {
                width: 100%;
            }

            .banner-stats {
                gap: 24px;
                flex-wrap: wrap;
            }

            .banner-stats .stat-num {
                font-size: 26px;
            }

            .section-block {
                padding: 60px 0;
            }

            .section-head {
                margin-bottom: 36px;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .topic-item {
                padding: 20px;
                gap: 14px;
                flex-direction: column;
                align-items: flex-start;
            }

            .topic-num {
                min-width: auto;
            }

            .topic-link {
                position: absolute;
                right: 16px;
                top: 16px;
            }

            .topic-item {
                position: relative;
            }

            .cta-box {
                padding: 40px 24px;
            }

            .cta-box h2 {
                font-size: 24px;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 32px;
            }

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

        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }

            .logo-text {
                font-size: 17px;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }

            .nav-toggle {
                width: 38px;
                height: 38px;
            }

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

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

            .banner-stats {
                gap: 16px;
            }

            .banner-stats .stat-num {
                font-size: 22px;
            }

            .help-card-img {
                height: 140px;
            }

            .cta-buttons {
                flex-direction: column;
            }

            .cta-buttons .btn-site {
                width: 100%;
            }
        }