/* roulang page: index */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #dbeafe;
            --accent: #06b6d4;
            --accent-light: #cffafe;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-gray: #f1f5f9;
            --bg-dark: #0f172a;
            --text-main: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius-sm: 8px;
            --radius: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.10);
            --transition: all 0.25s ease;
            --font: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        .container-custom {
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-pad {
            padding: 84px 0;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 10px;
            letter-spacing: -0.5px;
            line-height: 1.25;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 720px;
            margin: 0 auto 40px;
            line-height: 1.6;
        }

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

        /* ===== Header ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }

        .header-layout {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            min-height: 76px;
            padding: 8px 0;
        }

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

        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 11px;
            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, 0.28);
        }

        .brand-name {
            font-weight: 800;
            color: var(--text-main);
            font-size: 15px;
            white-space: nowrap;
            letter-spacing: 0.2px;
        }

        .nav-toggle {
            display: none;
            background: transparent;
            font-size: 22px;
            color: var(--text-main);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }

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

        .nav-collapse {
            display: flex;
            align-items: center;
            flex: 1;
            justify-content: flex-end;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            gap: 14px;
            width: 100%;
            justify-content: flex-end;
        }

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

        .nav-link-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 16px;
            border-radius: 50px;
            font-size: 14.5px;
            font-weight: 600;
            color: var(--text-body);
            transition: var(--transition);
        }

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

        .nav-link-item.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.30);
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-gray);
            border-radius: 50px;
            padding: 5px 5px 5px 16px;
            border: 1px solid var(--border);
            min-width: 250px;
            max-width: 330px;
            flex: 1;
            transition: var(--transition);
        }

        .header-search:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.10);
        }

        .header-search i {
            color: var(--text-muted);
            font-size: 14px;
            margin-right: 8px;
        }

        .search-input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            font-size: 14px;
            color: var(--text-main);
            min-width: 0;
        }

        .search-input::placeholder {
            color: #94a3b8;
        }

        .search-btn {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 8px 18px;
            font-size: 13.5px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .search-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 130px 0 130px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            color: #fff;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(2, 6, 23, 0.92) 0%, rgba(15, 23, 42, 0.76) 48%, rgba(37, 99, 235, 0.36) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            backdrop-filter: blur(10px);
            padding: 7px 18px;
            border-radius: 50px;
            font-size: 13.5px;
            font-weight: 500;
            letter-spacing: 0.5px;
        }

        .hero-badge i {
            color: #fbbf24;
        }

        .hero h1 {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.18;
            margin: 22px 0 18px;
            color: #fff;
            letter-spacing: -0.5px;
        }

        .hero-desc {
            font-size: 17.5px;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 34px;
            line-height: 1.7;
            max-width: 620px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 15px;
            padding: 13px 28px;
            border-radius: 50px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
            transition: var(--transition);
        }

        .btn-hero-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22);
        }

        .btn-hero-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.10);
            border: 1.5px solid rgba(255, 255, 255, 0.30);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 13px 28px;
            border-radius: 50px;
            backdrop-filter: blur(6px);
            transition: var(--transition);
        }

        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.20);
            border-color: rgba(255, 255, 255, 0.45);
            transform: translateY(-2px);
        }

        .hero-search-wrap {
            background: #fff;
            border-radius: 60px;
            padding: 7px 7px 7px 22px;
            display: flex;
            align-items: center;
            max-width: 520px;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.20);
        }

        .hero-search-wrap i {
            color: var(--text-muted);
            font-size: 15px;
            margin-right: 10px;
        }

        .hero-search-wrap input {
            flex: 1;
            border: none;
            outline: none;
            font-size: 15px;
            color: var(--text-main);
            background: transparent;
            min-width: 0;
        }

        .hero-search-wrap button {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border-radius: 50px;
            padding: 12px 26px;
            font-weight: 700;
            font-size: 14.5px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            white-space: nowrap;
        }

        .hero-search-wrap button:hover {
            filter: brightness(1.1);
            transform: scale(1.02);
        }

        .hero-trust {
            display: flex;
            gap: 22px;
            margin-top: 42px;
            flex-wrap: wrap;
        }

        .hero-trust span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 13.5px;
            color: rgba(255, 255, 255, 0.80);
        }

        .hero-trust i {
            color: #4ade80;
        }

        /* ===== Stats ===== */
        .stats-section {
            padding: 0;
            margin-top: -50px;
            position: relative;
            z-index: 10;
        }

        .stats-card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
            padding: 30px 40px;
            border: 1px solid rgba(255, 255, 255, 0.4);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .stat-item {
            text-align: center;
            padding: 10px 8px;
            border-right: 1px solid var(--border);
        }

        .stat-item:last-child {
            border-right: none;
        }

        .stat-num {
            font-size: 30px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
            font-weight: 500;
        }

        /* ===== About Section ===== */
        .about-section {
            background: var(--bg-white);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 58px;
            align-items: center;
        }

        .about-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .about-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .about-content .badge-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 50px;
            margin-bottom: 14px;
        }

        .about-content h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .about-content p {
            color: var(--text-body);
            margin-bottom: 16px;
            line-height: 1.75;
        }

        .about-points {
            margin-top: 22px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .about-point {
            display: flex;
            gap: 10px;
            align-items: flex-start;
        }

        .about-point i {
            color: var(--primary);
            font-size: 16px;
            margin-top: 4px;
            width: 20px;
            flex-shrink: 0;
        }

        .about-point span {
            font-size: 15px;
            color: var(--text-body);
            font-weight: 500;
        }

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

        .category-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .category-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .category-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .category-image {
            position: relative;
            overflow: hidden;
            height: 220px;
        }

        .category-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .category-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(2, 6, 23, 0.55));
        }

        .category-body {
            padding: 26px 28px 30px;
            position: relative;
        }

        .category-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .category-body p {
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14.5px;
        }

        .category-link i {
            transition: transform 0.25s ease;
        }

        .category-link:hover {
            color: var(--primary-dark);
        }

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

        /* ===== Features ===== */
        .features-section {
            background: var(--bg-white);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .feature-card {
            text-align: center;
            padding: 36px 22px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            background: #fff;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .feature-card:hover::before {
            opacity: 1;
        }

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

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            color: var(--primary);
            font-size: 22px;
        }

        .feature-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* ===== Steps ===== */
        .steps-section {
            background: var(--bg-dark);
            color: #fff;
        }

        .steps-section .section-title {
            color: #fff;
        }

        .steps-section .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 26px;
            position: relative;
        }

        .step-item {
            text-align: center;
            padding: 36px 20px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .step-item:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-4px);
        }

        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            margin: 0 auto 18px;
            box-shadow: 0 8px 20px rgba(37, 99, 235, 0.35);
        }

        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .step-item p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.68);
            line-height: 1.65;
        }

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

        .news-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
        }

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

        .news-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 26px;
            transition: var(--transition);
        }

        .news-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
            transform: translateY(-2px);
        }

        .news-link {
            display: block;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
        }

        .news-cat {
            display: inline-flex;
            align-items: center;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 50px;
        }

        .news-meta time {
            font-size: 13px;
            color: var(--text-muted);
        }

        .news-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.4;
        }

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

        .news-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-more {
            font-size: 13.5px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .news-more i {
            transition: transform 0.25s ease;
        }

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

        .news-empty {
            background: #fff;
            border: 1px dashed var(--border);
            border-radius: var(--radius);
            padding: 50px 30px;
            text-align: center;
            color: var(--text-muted);
        }

        .news-empty i {
            font-size: 32px;
            margin-bottom: 12px;
            color: #cbd5e1;
        }

        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }

        .sidebar-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
        }

        .service-status {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
            font-size: 14px;
            color: var(--text-body);
        }

        .status-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #4ade80;
            box-shadow: 0 0 0 4px rgba(74, 222, 128, 0.2);
            flex-shrink: 0;
        }

        .sidebar-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .sidebar-links a {
            font-size: 14px;
            color: var(--text-body);
            padding: 8px 12px;
            border-radius: 8px;
            font-weight: 500;
            transition: var(--transition);
        }

        .sidebar-links a:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        .sidebar-links a i {
            margin-right: 8px;
            color: var(--primary);
            font-size: 13px;
        }

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

        .faq-container {
            max-width: 840px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            background: transparent;
            text-align: left;
            padding: 20px 26px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 14px;
        }

        .faq-question i {
            color: var(--primary);
            transition: transform 0.3s ease;
            font-size: 15px;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 26px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 26px 20px;
        }

        .faq-answer p {
            font-size: 14.5px;
            color: var(--text-body);
            line-height: 1.7;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1e40af 0%, #2563eb 60%, #06b6d4 100%);
            position: relative;
            overflow: hidden;
            padding: 90px 0;
            color: #fff;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
            color: #fff;
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--primary-dark);
            padding: 15px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
        }

        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.20);
            color: var(--primary);
        }

        .cta-tips {
            display: flex;
            gap: 24px;
            justify-content: center;
            margin-top: 30px;
            font-size: 13.5px;
            color: rgba(255, 255, 255, 0.75);
            flex-wrap: wrap;
        }

        .cta-tips span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .cta-tips i {
            color: #4ade80;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.72);
            padding: 60px 0 30px;
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .brand-name {
            color: #fff;
            font-size: 16px;
            margin-bottom: 12px;
        }

        .footer-brand .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.60);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.62);
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.60);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

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

            .about-grid {
                gap: 36px;
            }

            .brand-name {
                font-size: 14px;
            }
        }

        @media (max-width: 991.98px) {
            .header-layout {
                flex-wrap: wrap;
            }

            .nav-toggle {
                display: block;
            }

            .nav-collapse {
                flex-basis: 100%;
                display: none;
                padding: 12px 0;
                border-top: 1px solid var(--border);
                margin-top: 8px;
            }

            .nav-collapse.show {
                display: flex;
            }

            .nav-inner {
                flex-direction: column;
                align-items: stretch;
                gap: 14px;
            }

            .main-nav {
                flex-wrap: wrap;
                gap: 8px;
            }

            .header-search {
                max-width: 100%;
                min-width: 0;
                width: 100%;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }

            .stat-item {
                border-right: none;
                border-bottom: 1px solid var(--border);
                padding: 14px 8px;
            }

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

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

            .news-layout {
                grid-template-columns: 1fr;
            }

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

            .hero {
                padding: 90px 0;
            }

            .hero h1 {
                font-size: 36px;
            }
        }

        @media (max-width: 768px) {
            .section-pad {
                padding: 56px 0;
            }

            .section-title {
                font-size: 26px;
            }

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

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

            .step-item {
                padding: 26px 16px;
            }

            .stat-num {
                font-size: 24px;
            }

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

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

            .brand-name {
                font-size: 13px;
            }

            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }

            .hero {
                padding: 70px 0 90px;
            }

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

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

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn-hero-primary,
            .btn-hero-secondary {
                justify-content: center;
            }

            .hero-search-wrap {
                flex-direction: column;
                border-radius: 20px;
                padding: 14px;
                gap: 10px;
            }

            .hero-search-wrap input {
                width: 100%;
                padding: 8px 0;
            }

            .hero-search-wrap button {
                width: 100%;
                justify-content: center;
            }

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

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

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

            .cta-inner h2 {
                font-size: 26px;
            }

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

            .nav-link-item {
                font-size: 13.5px;
                padding: 8px 12px;
            }
        }

/* roulang page: category1 */
:root{
  --primary:#0b1f33;
  --primary-dark:#071625;
  --primary-light:#122a47;
  --accent:#0ea5e9;
  --accent-dark:#0284c7;
  --accent-green:#10b981;
  --gold:#f59e0b;
  --bg:#f4f6fb;
  --surface:#ffffff;
  --text:#14213d;
  --text-soft:#5b6b82;
  --border:#e2e8f0;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow-sm:0 2px 12px rgba(2,20,49,.06);
  --shadow:0 8px 30px rgba(2,20,49,.08);
  --shadow-lg:0 20px 50px rgba(2,20,49,.12);
  --transition:all .3s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Segoe UI',sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none;transition:var(--transition)}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer}
input{font-family:inherit}
ul,ol{list-style:none}
h1,h2,h3,h4{line-height:1.3;font-weight:700;color:var(--primary)}
.container-custom{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:90px 0;position:relative}
.section-head{max-width:760px;margin:0 auto 56px;text-align:center}
.section-label{display:inline-flex;align-items:center;gap:8px;background:rgba(14,165,233,.08);color:var(--accent-dark);font-size:13px;font-weight:600;letter-spacing:1px;padding:6px 16px;border-radius:100px;margin-bottom:14px;text-transform:uppercase}
.section-head h2{font-size:34px;margin-bottom:12px}
.section-head p{color:var(--text-soft);font-size:16px}
.section-label-badge{display:inline-block;background:linear-gradient(135deg,var(--accent),var(--accent-green));color:#fff;font-size:13px;font-weight:600;padding:6px 16px;border-radius:100px;margin-bottom:14px;letter-spacing:1px}
.site-header{background:rgba(11,31,51,.95);backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.08);position:sticky;top:0;z-index:1000;box-shadow:0 4px 20px rgba(2,20,49,.2)}
.site-header .header-layout{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;flex-wrap:wrap}
.site-header .brand-link{display:flex;align-items:center;gap:10px;color:#fff;padding:10px 0;min-width:0}
.site-header .brand-icon{width:40px;height:40px;flex-shrink:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--accent),var(--accent-green));border-radius:12px;font-size:18px;color:#fff;box-shadow:0 4px 12px rgba(14,165,233,.35)}
.site-header .brand-name{font-size:19px;font-weight:700;letter-spacing:.3px;white-space:nowrap;color:#fff}
.nav-toggle{display:none;background:transparent;border:1px solid rgba(255,255,255,.2);border-radius:10px;color:#fff;font-size:18px;width:42px;height:42px;align-items:center;justify-content:center}
.nav-toggle:hover{background:rgba(255,255,255,.1)}
.nav-collapse .nav-inner{display:flex;align-items:center;gap:24px}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav .nav-link-item{display:inline-block;padding:8px 16px;color:rgba(255,255,255,.75);font-size:15px;font-weight:500;border-radius:100px;transition:var(--transition);position:relative}
.main-nav .nav-link-item:hover{color:#fff;background:rgba(255,255,255,.08)}
.main-nav .nav-link-item.active{color:#fff;background:rgba(14,165,233,.2);box-shadow:inset 0 0 0 1px rgba(14,165,233,.4)}
.header-search{display:flex;align-items:center;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14);border-radius:100px;padding:5px 6px 5px 16px;min-width:280px;max-width:380px;transition:var(--transition)}
.header-search:focus-within{background:rgba(255,255,255,.14);border-color:rgba(14,165,233,.5);box-shadow:0 0 0 4px rgba(14,165,233,.12)}
.header-search i{color:rgba(255,255,255,.5);font-size:14px;margin-right:10px}
.header-search .search-input{flex:1;background:transparent;border:none;outline:none;color:#fff;font-size:14px;min-width:0}
.header-search .search-input::placeholder{color:rgba(255,255,255,.45)}
.header-search .search-btn{background:linear-gradient(135deg,var(--accent),var(--accent-green));border:none;color:#fff;font-size:14px;font-weight:600;padding:7px 18px;border-radius:100px;transition:var(--transition);white-space:nowrap}
.header-search .search-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(14,165,233,.4)}
.page-banner{position:relative;padding:120px 0 100px;background-size:cover;background-position:center;color:#fff}
.page-banner .banner-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(7,22,37,.92),rgba(11,31,51,.72) 55%,rgba(14,165,233,.45))}
.banner-content{position:relative;z-index:2;max-width:860px}
.banner-crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.6);margin-bottom:18px}
.banner-crumb a{color:rgba(255,255,255,.6)}
.banner-crumb a:hover{color:var(--accent)}
.banner-crumb i{font-size:10px}
.banner-tag{display:inline-block;background:rgba(14,165,233,.25);border:1px solid rgba(14,165,233,.4);color:#fff;font-size:14px;font-weight:600;padding:6px 18px;border-radius:100px;margin-bottom:18px;letter-spacing:.5px}
.banner-content h1{font-size:46px;font-weight:800;color:#fff;margin-bottom:16px;letter-spacing:.5px}
.banner-content p{font-size:17px;color:rgba(255,255,255,.85);max-width:680px;margin-bottom:28px}
.banner-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn-main{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--accent),var(--accent-green));color:#fff;font-weight:600;font-size:16px;padding:13px 30px;border-radius:100px;border:none;transition:var(--transition);box-shadow:0 8px 24px rgba(14,165,233,.35)}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(14,165,233,.45);color:#fff}
.btn-main:active{transform:translateY(0)}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.3);color:#fff;font-weight:600;font-size:16px;padding:13px 30px;border-radius:100px;transition:var(--transition);backdrop-filter:blur(8px)}
.btn-ghost:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline{display:inline-flex;align-items:center;gap:6px;background:transparent;border:1px solid var(--border);color:var(--primary);font-weight:600;font-size:14px;padding:9px 20px;border-radius:100px;transition:var(--transition)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);background:rgba(14,165,233,.05)}
.overview-section .overview-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.overview-copy .section-label{margin-bottom:14px}
.overview-copy h2{font-size:32px;margin-bottom:16px}
.overview-copy p{color:var(--text-soft);margin-bottom:20px}
.overview-copy .feature-list li{display:flex;align-items:flex-start;gap:10px;color:var(--text);margin-bottom:12px}
.overview-copy .feature-list li i{color:var(--accent-green);font-size:16px;margin-top:4px}
.overview-stats{display:flex;gap:28px;margin-top:28px;padding-top:24px;border-top:1px solid var(--border)}
.overview-stats .stat-item{text-align:left}
.overview-stats .stat-num{font-size:30px;font-weight:800;color:var(--primary);line-height:1.2}
.overview-stats .stat-label{font-size:14px;color:var(--text-soft)}
.overview-image{position:relative}
.overview-image .img-wrap{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);position:relative}
.overview-image .img-wrap img{width:100%;height:420px;object-fit:cover;transition:transform .6s ease}
.overview-image .img-wrap:hover img{transform:scale(1.04)}
.overview-image .img-badge{position:absolute;left:24px;bottom:24px;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-radius:var(--radius);padding:14px 22px;display:flex;align-items:center;gap:14px;box-shadow:var(--shadow-lg)}
.overview-image .img-badge i{font-size:30px;color:var(--accent)}
.overview-image .img-badge strong{font-size:18px;color:var(--primary);display:block;font-weight:700}
.overview-image .img-badge span{font-size:13px;color:var(--text-soft)}
.entry-section{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.entry-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 32px;height:100%;transition:var(--transition);position:relative;overflow:hidden}
.entry-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(14,165,233,.3);background:#fff}
.entry-card .entry-icon{width:60px;height:60px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:24px;background:linear-gradient(135deg,var(--accent),var(--accent-green));color:#fff;margin-bottom:20px;box-shadow:0 8px 20px rgba(14,165,233,.3)}
.entry-card:nth-child(2) .entry-icon{background:linear-gradient(135deg,#f59e0b,#f97316);box-shadow:0 8px 20px rgba(245,158,11,.3)}
.entry-card:nth-child(3) .entry-icon{background:linear-gradient(135deg,#8b5cf6,#6366f1);box-shadow:0 8px 20px rgba(139,92,246,.3)}
.entry-card h3{font-size:20px;margin-bottom:12px}
.entry-card p{color:var(--text-soft);font-size:15px;margin-bottom:18px;flex:1}
.entry-card .btn-outline{margin-top:auto}
.steps-section{background:linear-gradient(180deg,var(--bg),#eef2f8)}
.steps-content .section-label{margin-bottom:14px}
.steps-content h2{font-size:32px;margin-bottom:16px}
.steps-content>p{color:var(--text-soft);margin-bottom:24px}
.tip-box{background:#fff;border-left:4px solid var(--gold);border-radius:var(--radius-sm);padding:20px 24px;box-shadow:var(--shadow-sm);margin-top:24px}
.tip-box h4{font-size:16px;margin-bottom:6px;display:flex;align-items:center;gap:8px;color:var(--primary)}
.tip-box h4 i{color:var(--gold)}
.tip-box p{font-size:14px;color:var(--text-soft);margin:0}
.steps-list{display:flex;flex-direction:column;gap:20px}
.step-item{display:flex;gap:24px;background:var(--surface);border-radius:var(--radius-lg);padding:30px 32px;box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:var(--transition);position:relative}
.step-item:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.step-num{font-size:36px;font-weight:800;color:transparent;-webkit-text-stroke:2px var(--accent);line-height:1;min-width:64px;font-family:'Arial Black',sans-serif}
.step-item:last-child .step-num{-webkit-text-stroke:2px var(--accent-green)}
.step-text h3{font-size:18px;margin-bottom:8px}
.step-text p{color:var(--text-soft);font-size:15px;margin:0}
.security-section{background:var(--surface)}
.security-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.security-copy .section-label{margin-bottom:14px}
.security-copy h2{font-size:32px;margin-bottom:16px}
.security-copy>p{color:var(--text-soft);margin-bottom:28px}
.security-points{display:grid;gap:16px}
.security-point{display:flex;gap:16px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:18px 22px;transition:var(--transition)}
.security-point:hover{border-color:rgba(14,165,233,.35);background:#fff;box-shadow:var(--shadow-sm)}
.security-point .point-icon{width:44px;height:44px;flex-shrink:0;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:18px;background:rgba(14,165,233,.12);color:var(--accent)}
.security-point h3{font-size:16px;margin-bottom:4px}
.security-point p{font-size:14px;color:var(--text-soft);margin:0}
.security-image{position:relative}
.security-image .img-wrap{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
.security-image .img-wrap img{width:100%;height:460px;object-fit:cover}
.security-image .img-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(7,22,37,.85));border-radius:var(--radius-lg)}
.security-image .img-badge{position:absolute;left:24px;right:24px;bottom:24px;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-radius:var(--radius);padding:18px 22px;box-shadow:var(--shadow-lg);display:flex;align-items:center;justify-content:space-between}
.security-image .img-badge .badge-item{display:flex;align-items:center;gap:10px}
.security-image .img-badge .badge-item i{font-size:20px;color:var(--accent-green)}
.security-image .img-badge .badge-item span{font-size:14px;font-weight:600;color:var(--primary)}
.faq-section{background:var(--bg)}
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px 32px;margin-bottom:16px;transition:var(--transition)}
.faq-item:hover{border-color:rgba(14,165,233,.3);box-shadow:var(--shadow-sm)}
.faq-item h3{font-size:17px;margin-bottom:10px;display:flex;align-items:flex-start;gap:12px;color:var(--primary)}
.faq-item h3 i{color:var(--accent);font-size:16px;margin-top:4px}
.faq-item p{color:var(--text-soft);font-size:15px;margin:0;padding-left:28px}
.cta-section{position:relative;padding:80px 0;background:var(--primary);overflow:hidden}
.cta-section::before{content:'';position:absolute;top:-60%;right:-30%;width:500px;height:500px;background:radial-gradient(circle,rgba(14,165,233,.25),transparent 70%);border-radius:50%}
.cta-section::after{content:'';position:absolute;bottom:-40%;left:-20%;width:400px;height:400px;background:radial-gradient(circle,rgba(16,185,129,.2),transparent 70%);border-radius:50%}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:680px;margin:0 auto}
.cta-inner h2{color:#fff;font-size:34px;margin-bottom:14px}
.cta-inner p{color:rgba(255,255,255,.75);font-size:17px;margin-bottom:30px}
.cta-inner .cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.7);padding:70px 0 24px}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;margin-bottom:48px}
.footer-brand .brand-name{color:#fff;font-size:20px;font-weight:700}
.footer-brand .brand-icon{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--accent),var(--accent-green));border-radius:12px;font-size:18px;color:#fff;flex-shrink:0}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.55);max-width:420px}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:rgba(255,255,255,.6);font-size:14px;transition:var(--transition)}
.footer-col ul a:hover{color:var(--accent);padding-left:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;text-align:center}
.footer-bottom p{font-size:14px;color:rgba(255,255,255,.45);margin:0}
.footer-col a:focus,.footer-bottom a:focus,.main-nav a:focus,.header-search .search-btn:focus,.btn-main:focus,.btn-ghost:focus{outline:2px solid rgba(14,165,233,.7);outline-offset:3px}
@media (max-width:992px){
  .section{padding:60px 0}
  .site-header .header-layout{flex-wrap:wrap;padding:12px 0}
  .nav-toggle{display:flex}
  .nav-collapse{flex-basis:100%;display:none}
  .nav-collapse.show{display:block}
  .nav-collapse .nav-inner{flex-direction:column;align-items:stretch;gap:16px;padding:16px 0}
  .main-nav{flex-direction:column;align-items:stretch;gap:4px}
  .main-nav .nav-link-item{padding:12px 16px;text-align:center}
  .header-search{max-width:none;min-width:0;width:100%}
  .overview-grid{grid-template-columns:1fr;gap:40px}
  .security-grid{grid-template-columns:1fr;gap:40px}
  .footer-inner{grid-template-columns:1fr 1fr;gap:36px}
  .banner-content h1{font-size:36px}
  .section-head h2{font-size:28px}
  .overview-copy h2,.steps-content h2,.security-copy h2{font-size:28px}
}
@media (max-width:768px){
  .container-custom{padding:0 16px}
  .page-banner{padding:80px 0 70px}
  .banner-content h1{font-size:30px}
  .banner-content p{font-size:15px}
  .overview-stats{flex-wrap:wrap;gap:20px}
  .overview-stats .stat-item{width:calc(50% - 20px)}
  .overview-image .img-wrap img{height:300px}
  .security-image .img-wrap img{height:340px}
  .steps-list{gap:14px}
  .step-item{flex-direction:column;gap:12px;padding:24px}
  .step-num{font-size:28px}
  .footer-inner{grid-template-columns:1fr}
}
@media (max-width:520px){
  .section{padding:48px 0}
  .section-head{margin-bottom:36px}
  .section-head h2{font-size:24px}
  .banner-content h1{font-size:26px}
  .btn-main,.btn-ghost{padding:12px 22px;font-size:15px;width:100%;justify-content:center}
  .banner-actions{flex-direction:column}
  .overview-stats .stat-item{width:100%}
  .entry-card{padding:26px 22px}
  .faq-item{padding:22px}
  .cta-inner h2{font-size:26px}
  .security-image .img-badge{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-bottom p{font-size:13px}
}

/* roulang page: article */
:root {
            --primary: #14283c;
            --primary-light: #1e3a5c;
            --primary-dark: #0b1a2a;
            --accent: #d9a94e;
            --accent-light: #e8c476;
            --bg-light: #f4f7fb;
            --bg-white: #fff;
            --bg-dark: #0d1f2d;
            --text-main: #1e2a38;
            --text-muted: #6b7a8e;
            --border: #dfe6ef;
            --radius: 18px;
            --radius-sm: 10px;
            --shadow-sm: 0 1px 4px rgba(20,40,60,.06);
            --shadow-md: 0 10px 34px rgba(20,40,60,.08);
            --shadow-lg: 0 18px 50px rgba(20,40,60,.12);
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition: all .25s ease;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background: var(--bg-light);
            color: var(--text-main);
            line-height: 1.75;
            margin: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container-custom {
            width: 100%;
            max-width: 1260px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 72px 0;
        }
        .section-muted {
            background: var(--bg-white);
        }
        .section-title-wrap {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }
        .section-tagline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(217,169,78,.12);
            color: #a07a2e;
            font-size: 13px;
            font-weight: 700;
            padding: 6px 18px;
            border-radius: 30px;
            letter-spacing: .05em;
            margin-bottom: 16px;
        }
        .section-title {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 12px;
            letter-spacing: .01em;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 15px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255,255,255,.96);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 24px rgba(20,40,60,.04);
        }
        .header-layout {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 76px;
            position: relative;
        }
        .brand-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            min-width: 0;
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--accent);
            border-radius: 12px;
            font-size: 17px;
            flex-shrink: 0;
            box-shadow: 0 4px 14px rgba(20,40,60,.22);
        }
        .brand-name {
            font-size: 17px;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: .01em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 10px;
            width: 44px;
            height: 44px;
            font-size: 19px;
            color: var(--primary);
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-light);
            border-color: var(--primary);
        }
        .nav-toggle:focus {
            outline: 2px solid rgba(20,40,60,.2);
            outline-offset: 2px;
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-link-item {
            display: inline-flex;
            align-items: center;
            padding: 9px 16px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .nav-link-item:hover {
            background: var(--bg-light);
            color: var(--primary);
        }
        .nav-link-item.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(20,40,60,.22);
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 4px 4px 4px 14px;
            min-width: 260px;
            gap: 6px;
            transition: var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(20,40,60,.08);
        }
        .header-search i {
            color: var(--text-muted);
            font-size: 14px;
        }
        .search-input {
            flex: 1;
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            color: var(--text-main);
            min-width: 0;
            padding: 6px 0;
        }
        .search-input::placeholder {
            color: var(--text-muted);
        }
        .search-btn {
            background: var(--primary);
            border: none;
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 7px 18px;
            border-radius: 22px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .search-btn:hover {
            background: var(--primary-light);
        }
        .search-btn:focus {
            outline: 2px solid rgba(20,40,60,.3);
            outline-offset: 2px;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 76px 0 64px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-color: var(--primary-dark);
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(10,25,40,.92) 0%, rgba(10,25,40,.78) 55%, rgba(10,25,40,.58) 100%);
            z-index: 1;
        }
        .article-hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-wrap {
            margin-bottom: 20px;
        }
        .breadcrumb-wrap .breadcrumb {
            margin: 0;
            font-size: 13px;
        }
        .breadcrumb-wrap .breadcrumb-item a {
            color: rgba(255,255,255,.78);
            transition: var(--transition);
        }
        .breadcrumb-wrap .breadcrumb-item a:hover {
            color: var(--accent);
        }
        .breadcrumb-wrap .breadcrumb-item.active {
            color: rgba(255,255,255,.6);
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            vertical-align: bottom;
        }
        .breadcrumb-wrap .breadcrumb-item + .breadcrumb-item::before {
            color: rgba(255,255,255,.42);
        }
        .hero-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,255,255,.12);
            border: 1px solid rgba(255,255,255,.22);
            color: #fff;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            backdrop-filter: blur(6px);
            margin-bottom: 18px;
        }
        .hero-category-badge i {
            color: var(--accent);
        }
        .article-hero h1 {
            font-size: clamp(1.6rem, 3.4vw, 2.5rem);
            font-weight: 800;
            line-height: 1.32;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: .01em;
            max-width: 900px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            color: rgba(255,255,255,.78);
            font-size: 14px;
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }
        .meta-item i {
            color: var(--accent);
        }

        /* ===== Article Body ===== */
        .article-body {
            padding: 60px 0 72px;
        }
        .article-content {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 2.6rem;
            margin-bottom: 28px;
        }
        .article-content-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-main);
            word-break: break-word;
        }
        .article-content-body h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin: 2rem 0 1rem;
            padding-bottom: .5rem;
            border-bottom: 2px solid var(--bg-light);
        }
        .article-content-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--primary);
            margin: 1.5rem 0 .75rem;
        }
        .article-content-body p {
            margin-bottom: 1.1rem;
        }
        .article-content-body ul,
        .article-content-body ol {
            margin-bottom: 1.1rem;
            padding-left: 1.5rem;
        }
        .article-content-body li {
            margin-bottom: .4rem;
        }
        .article-content-body img {
            max-width: 100%;
            border-radius: var(--radius-sm);
            margin: 1rem 0;
        }
        .article-content-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--bg-light);
            padding: 1rem 1.4rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            margin: 1.2rem 0;
        }
        .article-content-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content-body a:hover {
            color: var(--accent);
        }
        .article-content-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.2rem 0;
            font-size: 14px;
        }
        .article-content-body th,
        .article-content-body td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-content-body th {
            background: var(--bg-light);
            font-weight: 600;
        }

        .entry-notice {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            background: linear-gradient(135deg, #fff9ee, #fdf3de);
            border: 1px solid #eddcb6;
            border-radius: var(--radius-sm);
            padding: 16px 20px;
            margin: 26px 0 0;
            font-size: 14px;
            color: #7a5a1e;
            line-height: 1.7;
        }
        .entry-notice i {
            font-size: 22px;
            color: var(--accent);
            margin-top: 2px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            margin-top: 28px;
            padding-top: 22px;
            border-top: 1px solid var(--border);
        }
        .tags-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 600;
        }
        .tag-pill {
            display: inline-block;
            background: var(--bg-light);
            color: var(--text-main);
            border: 1px solid var(--border);
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 13px;
            transition: var(--transition);
        }
        .tag-pill:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .post-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
        }
        .post-back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 14px;
            transition: var(--transition);
        }
        .post-back-link:hover {
            color: var(--primary);
        }

        .article-not-found {
            text-align: center;
            padding: 48px 20px;
        }
        .article-not-found .not-found-icon {
            font-size: 52px;
            color: var(--accent);
            margin-bottom: 18px;
        }
        .article-not-found h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--primary-dark);
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 22px;
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            position: sticky;
            top: 104px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 22px;
            margin-bottom: 20px;
        }
        .card-heading {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .card-heading i {
            color: var(--accent);
        }
        .safety-card {
            background: linear-gradient(135deg, #14283c, #1e3a5c);
            color: #fff;
            border: none;
            position: relative;
            overflow: hidden;
        }
        .safety-card .card-heading {
            color: #fff;
        }
        .safety-card .card-heading i {
            color: var(--accent);
        }
        .safety-list {
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 14px;
        }
        .safety-list li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            padding: 8px 0;
            line-height: 1.5;
            color: rgba(255,255,255,.88);
        }
        .safety-list li i {
            color: var(--accent);
            margin-top: 4px;
            flex-shrink: 0;
        }
        .cat-entry-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .cat-entry-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            background: var(--bg-light);
            border: 1px solid var(--border);
            color: var(--text-main);
            transition: var(--transition);
        }
        .cat-entry-link:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateX(4px);
        }
        .cat-entry-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: #fff;
            border-radius: 10px;
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
        }
        .cat-entry-link strong {
            display: block;
            font-size: 14px;
            font-weight: 700;
        }
        .cat-entry-link small {
            font-size: 12px;
            opacity: .75;
        }
        .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-list li {
            padding: 6px 0;
            border-bottom: 1px solid var(--bg-light);
        }
        .sidebar-list li:last-child {
            border-bottom: none;
        }
        .sidebar-article-link {
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }
        .sidebar-article-thumb {
            flex-shrink: 0;
            width: 72px;
            height: 54px;
            border-radius: 8px;
            overflow: hidden;
            background: var(--bg-light);
        }
        .sidebar-article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        .sidebar-article-text {
            min-width: 0;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-article-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.45;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            transition: var(--transition);
        }
        .sidebar-article-link:hover .sidebar-article-title {
            color: var(--primary);
        }
        .sidebar-article-meta {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ===== Buttons ===== */
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 12px;
            padding: 12px 26px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
        }
        .btn-primary-custom:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(20,40,60,.22);
            color: #fff;
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255,255,255,.45);
            border-radius: 12px;
            padding: 12px 26px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
        }
        .btn-outline-custom:hover {
            background: rgba(255,255,255,.12);
            color: #fff;
            transform: translateY(-2px);
            border-color: #fff;
        }

        /* ===== Recommend ===== */
        .recommend-section {
            background: var(--bg-white);
            padding: 72px 0;
        }
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .recommend-card {
            display: block;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }
        .recommend-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(20,40,60,.15);
        }
        .recommend-thumb {
            height: 168px;
            overflow: hidden;
            background: var(--bg-light);
        }
        .recommend-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            transition: transform .4s ease;
        }
        .recommend-card:hover .recommend-thumb img {
            transform: scale(1.04);
        }
        .recommend-body {
            padding: 18px 18px 20px;
        }
        .recommend-cat {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(217,169,78,.12);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }
        .recommend-body h4 {
            font-size: 15px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--text-main);
            margin-bottom: 8px;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            min-height: 44px;
        }
        .recommend-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .recommend-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px;
            color: var(--text-muted);
            background: var(--bg-light);
            border-radius: var(--radius);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 72px 0;
            background: var(--bg-light);
        }
        .faq-accordion .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-accordion .accordion-button {
            font-weight: 600;
            color: var(--text-main);
            background: #fff;
            padding: 18px 22px;
            font-size: 15px;
            box-shadow: none;
            border-radius: 0 !important;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--bg-light);
            color: var(--primary);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(20,40,60,.12);
        }
        .faq-accordion .accordion-button::after {
            background-size: 14px;
        }
        .faq-accordion .accordion-body {
            padding: 16px 22px 20px;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            background: var(--bg-light);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 72px 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(11,26,42,.94), rgba(20,40,60,.86));
        }
        .cta-box {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 760px;
            margin: 0 auto;
            color: #fff;
        }
        .cta-box .section-tagline {
            background: rgba(217,169,78,.2);
            color: var(--accent-light);
        }
        .cta-box h2 {
            font-size: clamp(1.6rem, 3.2vw, 2.3rem);
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-box p {
            color: rgba(255,255,255,.8);
            font-size: 15px;
            margin-bottom: 30px;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,.75);
            padding: 64px 0 0;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 44px;
        }
        .footer-brand .brand-name {
            color: #fff;
        }
        .footer-desc {
            font-size: 14px;
            color: rgba(255,255,255,.6);
            line-height: 1.8;
            margin: 0;
            max-width: 380px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            padding: 5px 0;
        }
        .footer-col a {
            color: rgba(255,255,255,.65);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.1);
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255,255,255,.45);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199.98px) {
            .recommend-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 991.98px) {
            .nav-toggle {
                display: inline-flex;
            }
            .nav-collapse {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                box-shadow: 0 18px 40px rgba(20,40,60,.12);
                border-radius: 0 0 var(--radius) var(--radius);
                padding: 18px 20px;
                border-top: 1px solid var(--border);
            }
            .nav-inner {
                flex-direction: column;
                align-items: stretch;
                gap: 16px;
            }
            .main-nav {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }
            .nav-link-item {
                justify-content: flex-start;
            }
            .header-search {
                width: 100%;
                min-width: 0;
            }
            .article-sidebar {
                position: static;
                margin-top: 24px;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .article-content {
                padding: 2rem;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .cta-buttons .btn-primary-custom,
            .cta-buttons .btn-outline-custom {
                width: 100%;
                justify-content: center;
                max-width: 320px;
            }
        }
        @media (max-width: 767.98px) {
            .section-padding {
                padding: 52px 0;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
            }
            .article-hero {
                padding: 52px 0 44px;
            }
            .article-content {
                padding: 1.5rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .brand-name {
                font-size: 15px;
            }
        }
        @media (max-width: 575.98px) {
            .container-custom {
                padding: 0 16px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
            .meta-item {
                white-space: nowrap;
            }
            .post-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .sidebar-article-thumb {
                width: 76px;
                height: 58px;
            }
        }
        @media (min-width: 992px) {
            .nav-collapse {
                display: flex !important;
                flex: 1;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0d2b4e;
            --primary-dark: #081d36;
            --primary-light: #1a3a63;
            --accent: #ff6b35;
            --accent-light: #ffd166;
            --accent-soft: #fff3e9;
            --bg-body: #f5f7fb;
            --bg-white: #ffffff;
            --text-main: #1e293b;
            --text-muted: #5a6b7d;
            --border-color: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-pill: 50px;
            --shadow-sm: 0 2px 10px rgba(13, 43, 78, 0.05);
            --shadow-md: 0 6px 22px rgba(13, 43, 78, 0.08);
            --shadow-lg: 0 14px 40px rgba(13, 43, 78, 0.12);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background-color: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--accent);
        }
        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }
        input,
        textarea,
        select {
            font-family: inherit;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--primary);
            letter-spacing: -0.02em;
        }

        /* ===== 容器 ===== */
        .container-custom {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 通用按钮 ===== */
        .btn-main {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-pill);
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3);
            transition: var(--transition-base);
            border: 2px solid transparent;
        }
        .btn-main:hover {
            background: #e8551f;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.38);
            color: #fff;
        }
        .btn-main:active {
            transform: translateY(0);
            box-shadow: 0 3px 10px rgba(255, 107, 53, 0.25);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-pill);
            border: 2px solid var(--primary);
            transition: var(--transition-base);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(13, 43, 78, 0.2);
        }
        .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-pill);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
            transition: var(--transition-base);
        }
        .btn-white:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            color: var(--primary);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(255, 107, 53, 0.4);
            outline-offset: 2px;
        }

        /* ===== Header / 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .header-layout {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 74px;
            gap: 24px;
        }
        .brand-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-light);
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(13, 43, 78, 0.25);
        }
        .brand-name {
            font-size: 19px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            border: 1px solid var(--border-color);
            background: #fff;
            color: var(--primary);
            font-size: 20px;
            align-items: center;
            justify-content: center;
            transition: var(--transition-base);
        }
        .nav-toggle:hover {
            border-color: var(--accent);
            color: var(--accent);
        }
        .nav-collapse {
            flex: 1;
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link-item {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-weight: 500;
            font-size: 15px;
            color: var(--text-main);
            transition: var(--transition-base);
            position: relative;
        }
        .nav-link-item:hover {
            color: var(--accent);
            background: var(--accent-soft);
        }
        .nav-link-item.active {
            color: var(--accent);
            background: var(--accent-soft);
            font-weight: 600;
        }
        .nav-link-item.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 4px;
            background: var(--accent);
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border: 1.5px solid var(--border-color);
            border-radius: var(--radius-pill);
            padding: 4px 4px 4px 16px;
            min-width: 260px;
            transition: var(--transition-base);
        }
        .header-search:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.1);
            background: #fff;
        }
        .header-search i {
            color: var(--text-muted);
            font-size: 15px;
            margin-right: 10px;
        }
        .search-input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-main);
            min-width: 0;
            padding: 6px 0;
        }
        .search-input::placeholder {
            color: var(--text-muted);
        }
        .search-btn {
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .search-btn:hover {
            background: var(--accent);
        }

        /* ===== 页面 Hero ===== */
        .page-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 90px 0 70px;
            text-align: center;
            overflow: hidden;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(8, 29, 54, 0.86) 0%, rgba(13, 43, 78, 0.78) 50%, rgba(26, 58, 99, 0.82) 100%);
            z-index: 1;
        }
        .page-hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-nav {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-pill);
            padding: 6px 18px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 20px;
            backdrop-filter: blur(6px);
        }
        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.75);
        }
        .breadcrumb-nav a:hover {
            color: #fff;
        }
        .breadcrumb-nav .sep {
            color: rgba(255, 255, 255, 0.4);
            font-size: 12px;
        }
        .page-hero h1 {
            font-size: 42px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.02em;
        }
        .page-hero .hero-desc {
            max-width: 720px;
            margin: 0 auto;
            color: rgba(255, 255, 255, 0.82);
            font-size: 16px;
            line-height: 1.8;
        }
        .hero-badge-row {
            margin-top: 24px;
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            color: #fff;
            font-size: 13px;
            backdrop-filter: blur(6px);
        }
        .hero-badge i {
            color: var(--accent-light);
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--primary);
            position: relative;
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 50px;
        }
        .section-tag {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
            letter-spacing: 0.05em;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            padding: 70px 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 30px 20px;
            border-radius: var(--radius-md);
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            transition: var(--transition-base);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(255, 107, 53, 0.3);
        }
        .stat-icon {
            width: 48px;
            height: 48px;
            margin: 0 auto 14px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-light);
            font-size: 20px;
        }
        .stat-number {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ===== 核心安全能力 ===== */
        .features-section {
            background: var(--bg-body);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 34px 28px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            opacity: 0;
            transition: var(--transition-base);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--accent-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent);
            margin-bottom: 18px;
            transition: var(--transition-base);
        }
        .feature-card:hover .feature-icon {
            background: var(--accent);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* ===== 安全登录流程 ===== */
        .steps-section {
            background: url('/assets/images/backpic/back-2.png') center top / cover no-repeat, var(--primary);
            position: relative;
        }
        .steps-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 29, 54, 0.92), rgba(13, 43, 78, 0.88));
        }
        .steps-section .container-custom {
            position: relative;
            z-index: 2;
        }
        .steps-section .section-tag {
            background: rgba(255, 255, 255, 0.15);
            color: var(--accent-light);
        }
        .steps-section .section-head h2 {
            color: #fff;
        }
        .steps-section .section-head p {
            color: rgba(255, 255, 255, 0.75);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            backdrop-filter: blur(8px);
            transition: var(--transition-base);
            position: relative;
        }
        .step-card:hover {
            background: rgba(255, 255, 255, 0.14);
            transform: translateY(-4px);
        }
        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
        }
        .step-card h3 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 10px;
        }
        .step-card p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== 安全建议 ===== */
        .tips-section {
            background: var(--bg-white);
        }
        .tips-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .tips-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .tips-image img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .tips-image:hover img {
            transform: scale(1.04);
        }
        .tips-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(transparent 55%, rgba(13, 43, 78, 0.5));
            pointer-events: none;
        }
        .tips-content h3 {
            font-size: 24px;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 14px;
        }
        .tips-content h3::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            border-radius: 4px;
            background: var(--accent);
        }
        .tips-list {
            margin-top: 8px;
        }
        .tips-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 15px;
            color: var(--text-main);
            line-height: 1.65;
        }
        .tips-list li:last-child {
            border-bottom: none;
        }
        .tips-list li i {
            margin-top: 4px;
            color: var(--accent);
            font-size: 14px;
            flex-shrink: 0;
        }

        /* ===== 常见登录问题 ===== */
        .issues-section {
            background: var(--bg-body);
        }
        .issues-wrapper {
            max-width: 860px;
            margin: 0 auto;
        }
        .issue-card {
            display: flex;
            gap: 20px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            margin-bottom: 16px;
            transition: var(--transition-base);
        }
        .issue-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(255, 107, 53, 0.25);
            transform: translateX(4px);
        }
        .issue-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--accent-soft);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            flex-shrink: 0;
        }
        .issue-body h3 {
            font-size: 16px;
            margin-bottom: 6px;
        }
        .issue-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-white);
        }
        .faq-wrapper {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            background: var(--bg-white);
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(255, 107, 53, 0.35);
        }
        .faq-item-header {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            background: none;
            border: none;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            transition: var(--transition-base);
        }
        .faq-item-header:hover {
            color: var(--accent);
        }
        .faq-item-header .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--accent-soft);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: var(--transition-base);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--accent);
            color: #fff;
        }
        .faq-item-body {
            display: none;
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }
        .faq-item.open .faq-item-body {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            position: relative;
            padding: 80px 0;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(8, 29, 54, 0.88);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            color: #fff;
            font-size: 32px;
            margin-bottom: 16px;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 30px;
            line-height: 1.7;
        }
        .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
            font-size: 14px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .brand-icon {
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
            color: var(--primary);
        }
        .footer-brand .brand-name {
            color: #fff;
        }
        .footer-desc {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 360px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            border-radius: 4px;
            background: var(--accent);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition-base);
        }
        .footer-col ul li a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .footer-bottom {
            text-align: center;
            padding: 22px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 1024px) {
            .header-layout {
                flex-wrap: wrap;
                padding: 10px 0;
            }
            .nav-toggle {
                display: flex;
                margin-left: auto;
            }
            .nav-collapse {
                width: 100%;
                flex-basis: 100%;
            }
            .nav-inner {
                flex-direction: column;
                align-items: stretch;
                gap: 16px;
                padding: 16px 0 8px;
            }
            .main-nav {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }
            .nav-link-item {
                padding: 12px 16px;
                border-radius: 10px;
            }
            .nav-link-item.active::after {
                display: none;
            }
            .header-search {
                width: 100%;
                min-width: 0;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .tips-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 20px;
            }
            .page-hero {
                padding: 64px 0 48px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .section {
                padding: 56px 0;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .brand-name {
                font-size: 16px;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
                border-radius: 10px;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .brand-name {
                max-width: 180px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero .hero-desc {
                font-size: 14px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .tips-image img {
                height: 240px;
            }
            .issue-card {
                flex-direction: column;
                gap: 12px;
                padding: 20px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
            }
            .cta-inner h2 {
                font-size: 26px;
            }
            .cta-btns {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-btns .btn-main,
            .cta-btns .btn-white {
                justify-content: center;
            }
            .hero-badge-row {
                flex-direction: column;
                align-items: center;
            }
        }