/* roulang page: index */
:root {
            --primary: #4F46E5;
            --primary-dark: #4338CA;
            --primary-light: #EEF2FF;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --ink: #0F172A;
            --slate: #475569;
            --mist: #F1F5F9;
            --border: #E2E8F0;
            --white: #FFFFFF;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow: 0 1px 3px rgba(15, 23, 42, .06), 0 4px 16px rgba(15, 23, 42, .05);
            --shadow-lg: 0 8px 30px rgba(15, 23, 42, .10);
            --section-pad: 80px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            color: var(--ink);
            background: var(--white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }

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

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

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

        .section-muted {
            background: var(--mist);
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -.02em;
            color: var(--ink);
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--slate);
            max-width: 640px;
            margin-bottom: 48px;
            line-height: 1.7;
        }

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

        .section-head .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 768px) {
            :root {
                --section-pad: 56px;
            }
            .section-title {
                font-size: 1.65rem;
            }
            .section-subtitle {
                font-size: .95rem;
                margin-bottom: 32px;
            }
            .section-head {
                margin-bottom: 36px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, .8);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.18rem;
            color: var(--ink);
            letter-spacing: -.01em;
            white-space: nowrap;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            flex-shrink: 0;
        }

        .logo-accent {
            color: var(--primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0 auto;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 10px;
            font-size: .92rem;
            font-weight: 500;
            color: var(--slate);
            transition: all .2s ease;
            white-space: nowrap;
        }

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

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
            box-shadow: inset 0 0 0 1px rgba(79, 70, 229, .15);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            position: relative;
            display: flex;
            align-items: center;
        }

        .search-box input {
            width: 220px;
            height: 38px;
            padding: 0 14px 0 36px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: var(--mist);
            font-size: .85rem;
            color: var(--ink);
            transition: border .2s ease, box-shadow .2s ease;
        }

        .search-box input::placeholder {
            color: #94A3B8;
        }

        .search-box input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, .12);
            background: #fff;
        }

        .search-box .search-icon {
            position: absolute;
            left: 12px;
            color: #94A3B8;
            font-size: 14px;
            pointer-events: none;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            font-size: .9rem;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(79, 70, 229, .3);
            transition: all .25s ease;
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(79, 70, 229, .4);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(79, 70, 229, .3);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 12px;
            background: transparent;
            color: var(--primary);
            font-size: .9rem;
            font-weight: 600;
            border: 1.5px solid rgba(79, 70, 229, .35);
            transition: all .25s ease;
            cursor: pointer;
            white-space: nowrap;
        }

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

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 12px;
            background: rgba(255, 255, 255, .15);
            color: #fff;
            font-size: .9rem;
            font-weight: 600;
            backdrop-filter: blur(8px);
            transition: all .25s ease;
            border: 1px solid rgba(255, 255, 255, .3);
            cursor: pointer;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, .25);
        }

        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--mist);
            color: var(--ink);
            align-items: center;
            justify-content: center;
            font-size: 18px;
            cursor: pointer;
            transition: background .2s;
        }

        .mobile-toggle:hover {
            background: var(--border);
        }

        .mobile-menu {
            display: none;
            padding: 12px 20px 20px;
            border-top: 1px solid var(--border);
            background: #fff;
        }

        .mobile-menu .nav-link {
            display: flex;
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 1rem;
        }

        .mobile-menu .nav-link.active {
            background: var(--primary-light);
        }

        @media (max-width: 1024px) {
            .main-nav {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .search-box {
                display: none;
            }
            .mobile-menu.open {
                display: block;
            }
        }

        @media (max-width: 640px) {
            .header-inner {
                height: 64px;
            }
            .logo {
                font-size: 1rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
                border-radius: 8px;
            }
            .header-actions .btn-primary {
                padding: 8px 14px;
                font-size: .82rem;
                border-radius: 10px;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 120px 0 100px;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, .92) 0%, rgba(15, 23, 42, .70) 50%, rgba(79, 70, 229, .55) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 100px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .25);
            color: #E0E7FF;
            font-size: .82rem;
            font-weight: 500;
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
        }

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

        .hero h1 {
            font-size: 3.4rem;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -.03em;
            color: #fff;
            margin-bottom: 20px;
        }

        .hero h1 .highlight {
            color: #A5B4FC;
        }

        .hero p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, .85);
            line-height: 1.8;
            max-width: 600px;
            margin-bottom: 36px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 48px;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, .15);
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-stat .value {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
        }

        .hero-stat .label {
            font-size: .8rem;
            color: rgba(255, 255, 255, .65);
        }

        @media (max-width: 768px) {
            .hero {
                padding: 80px 0 64px;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: .95rem;
            }
            .hero-actions {
                gap: 10px;
                margin-bottom: 32px;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat .value {
                font-size: 1.2rem;
            }
        }

        /* ===== Notice Bar ===== */
        .notice-bar {
            padding: 14px 0;
            background: linear-gradient(135deg, #EEF2FF 0%, #FEF3C7 100%);
            border-bottom: 1px solid #E0E7FF;
        }

        .notice-content {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: .88rem;
            color: var(--ink);
        }

        .notice-content i {
            color: var(--accent);
            font-size: 1rem;
            flex-shrink: 0;
        }

        .notice-content strong {
            color: var(--primary-dark);
            font-weight: 600;
        }

        @media (max-width: 640px) {
            .notice-content {
                font-size: .8rem;
                gap: 8px;
            }
        }

        /* ===== Feature Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all .3s ease;
            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: opacity .3s ease;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(79, 70, 229, .25);
        }

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

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 22px;
            transition: transform .3s ease;
        }

        .feature-card:hover .feature-icon {
            transform: scale(1.08) rotate(-3deg);
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--ink);
        }

        .feature-card p {
            font-size: .9rem;
            color: var(--slate);
            line-height: 1.7;
        }

        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .feature-card {
                padding: 28px 24px;
            }
        }

        /* ===== Category Cards ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
            box-shadow: var(--shadow);
            transition: all .3s ease;
            background-size: cover;
            background-position: center;
        }

        .category-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, .92) 0%, rgba(15, 23, 42, .55) 45%, rgba(15, 23, 42, .2) 100%);
            transition: background .3s ease;
        }

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

        .category-card:hover::before {
            background: linear-gradient(to top, rgba(15, 23, 42, .95) 0%, rgba(15, 23, 42, .6) 45%, rgba(15, 23, 42, .25) 100%);
        }

        .category-content {
            position: relative;
            z-index: 2;
            padding: 32px 30px;
            width: 100%;
        }

        .category-content .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            background: rgba(79, 70, 229, .25);
            border: 1px solid rgba(255, 255, 255, .25);
            color: #E0E7FF;
            font-size: .78rem;
            font-weight: 500;
            margin-bottom: 14px;
            backdrop-filter: blur(4px);
        }

        .category-content h3 {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .category-content p {
            color: rgba(255, 255, 255, .8);
            font-size: .9rem;
            line-height: 1.6;
            margin-bottom: 18px;
            max-width: 400px;
        }

        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #A5B4FC;
            font-size: .9rem;
            font-weight: 600;
            transition: gap .25s ease;
        }

        .category-link i {
            transition: transform .25s ease;
        }

        .category-card:hover .category-link {
            gap: 12px;
        }

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

        @media (max-width: 768px) {
            .category-grid {
                grid-template-columns: 1fr;
            }
            .category-card {
                min-height: 260px;
            }
        }

        /* ===== News Cards ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all .3s ease;
        }

        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(79, 70, 229, .2);
        }

        .news-thumb {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--mist);
            position: relative;
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

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

        .news-body {
            padding: 24px;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
            font-size: .78rem;
            color: #94A3B8;
        }

        .news-cat {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 100px;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            font-size: .75rem;
        }

        .news-body h3 {
            font-size: 1rem;
            font-weight: 700;
            line-height: 1.5;
            color: var(--ink);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color .2s ease;
        }

        .news-card a:hover h3 {
            color: var(--primary);
        }

        .news-body p {
            font-size: .85rem;
            color: var(--slate);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }

        .news-time {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: .78rem;
            color: #94A3B8;
        }

        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Stats ===== */
        .stats-section {
            background: linear-gradient(135deg, #0F172A 0%, #1E1B4B 100%);
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(79, 70, 229, .3);
            filter: blur(60px);
        }

        .stats-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(245, 158, 11, .2);
            filter: blur(50px);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 2;
        }

        .stat-item {
            text-align: center;
            padding: 32px 20px;
            border-radius: 20px;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .1);
            backdrop-filter: blur(10px);
            transition: all .3s ease;
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-4px);
        }

        .stat-icon {
            font-size: 26px;
            color: #A5B4FC;
            margin-bottom: 14px;
        }

        .stat-value {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -.02em;
        }

        .stat-value span {
            font-size: 1.2rem;
            font-weight: 500;
            color: rgba(255, 255, 255, .6);
            margin-left: 2px;
        }

        .stat-label {
            font-size: .88rem;
            color: rgba(255, 255, 255, .65);
            margin-top: 6px;
        }

        @media (max-width: 900px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-item {
                padding: 24px 12px;
            }
            .stat-value {
                font-size: 1.8rem;
            }
        }

        /* ===== Process ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
        }

        .process-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: .25;
        }

        .process-step {
            text-align: center;
            padding: 24px 16px;
            position: relative;
            z-index: 2;
        }

        .step-number {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            box-shadow: 0 8px 20px rgba(79, 70, 229, .35);
            position: relative;
            z-index: 3;
        }

        .process-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--ink);
        }

        .process-step p {
            font-size: .85rem;
            color: var(--slate);
            line-height: 1.65;
            max-width: 220px;
            margin: 0 auto;
        }

        @media (max-width: 900px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .process-grid::before {
                display: none;
            }
        }

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

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

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: all .3s ease;
        }

        .faq-item:hover {
            border-color: rgba(79, 70, 229, .25);
            box-shadow: var(--shadow);
        }

        .faq-item.open {
            border-color: rgba(79, 70, 229, .3);
            box-shadow: var(--shadow);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 22px 28px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--ink);
            gap: 16px;
        }

        .faq-question .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
            transition: transform .3s ease;
        }

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

        .faq-answer {
            padding: 0 28px;
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease, padding .3s ease;
            color: var(--slate);
            font-size: .92rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            padding: 0 28px 24px;
            max-height: 300px;
        }

        @media (max-width: 640px) {
            .faq-question {
                padding: 18px 20px;
                font-size: .9rem;
            }
            .faq-answer {
                padding: 0 20px;
            }
            .faq-item.open .faq-answer {
                padding: 0 20px 20px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
        }

        .cta-box {
            border-radius: 32px;
            background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 60%, #9333EA 100%);
            padding: 64px 56px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(79, 70, 229, .35);
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -30px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -70px;
            left: -50px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(0, 0, 0, .08);
        }

        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            position: relative;
            z-index: 2;
            letter-spacing: -.02em;
        }

        .cta-box p {
            font-size: 1rem;
            color: rgba(255, 255, 255, .85);
            max-width: 520px;
            margin: 0 auto 36px;
            position: relative;
            z-index: 2;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            position: relative;
            z-index: 2;
            flex-wrap: wrap;
        }

        .cta-btn-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 14px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: .95rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, .15);
            transition: all .25s ease;
        }

        .cta-btn-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, .2);
        }

        .cta-btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 14px;
            border: 1.5px solid rgba(255, 255, 255, .4);
            background: rgba(255, 255, 255, .1);
            color: #fff;
            font-weight: 600;
            font-size: .95rem;
            backdrop-filter: blur(8px);
            transition: all .25s ease;
        }

        .cta-btn-outline:hover {
            background: rgba(255, 255, 255, .2);
            transform: translateY(-3px);
        }

        @media (max-width: 640px) {
            .cta-box {
                padding: 48px 24px;
                border-radius: 24px;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-btn-light,
            .cta-btn-outline {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0B1120;
            color: rgba(255, 255, 255, .7);
            padding: 60px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: .88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, .55);
            max-width: 320px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: .95rem;
            font-weight: 600;
            margin-bottom: 18px;
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul a {
            font-size: .88rem;
            color: rgba(255, 255, 255, .55);
            transition: color .2s ease;
        }

        .footer-col ul a:hover {
            color: #A5B4FC;
        }

        .footer-bottom {
            padding-top: 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: .82rem;
            color: rgba(255, 255, 255, .4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, .4);
        }

        .footer-bottom a:hover {
            color: #A5B4FC;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(79, 70, 229, .9);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            box-shadow: 0 4px 16px rgba(79, 70, 229, .35);
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: all .3s ease;
            z-index: 40;
            border: none;
        }

        .back-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .back-top:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
        }

        @media (max-width: 640px) {
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 40px;
                height: 40px;
            }
        }

/* roulang page: category1 */
:root {
            --brand: #2563eb;
            --brand-dark: #1e40af;
            --accent: #06b6d4;
            --bg: #f4f6fb;
            --surface: #ffffff;
            --text: #1e293b;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius-lg: 26px;
            --radius-md: 18px;
            --radius-sm: 12px;
            --shadow-sm: 0 4px 14px rgba(15, 23, 42, .05);
            --shadow-md: 0 16px 36px rgba(15, 23, 42, .09);
            --shadow-lg: 0 28px 60px rgba(15, 23, 42, .13);
            --header-h: 76px;
        }
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input {
            font-family: inherit;
            outline: none;
            border: none;
            background: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 90px 0;
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }
        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .12em;
            color: var(--brand);
            background: rgba(37, 99, 235, .08);
            border-radius: 999px;
            padding: 7px 18px;
            text-transform: uppercase;
        }
        .section-head h2 {
            font-size: clamp(28px, 3.6vw, 40px);
            font-weight: 800;
            line-height: 1.25;
            margin: 16px 0 14px;
            color: var(--text);
        }
        .section-head p {
            color: var(--muted);
            font-size: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 12px 26px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            transition: all .25s ease;
            cursor: pointer;
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--brand);
            color: #fff;
            box-shadow: 0 8px 20px rgba(37, 99, 235, .24);
        }
        .btn-primary:hover {
            background: var(--brand-dark);
            transform: translateY(-2px);
            box-shadow: 0 14px 28px rgba(37, 99, 235, .3);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--border);
            color: var(--text);
        }
        .btn-outline:hover {
            border-color: var(--brand);
            color: var(--brand);
            background: rgba(37, 99, 235, .04);
        }
        .btn-white {
            background: #fff;
            color: var(--brand-dark);
            box-shadow: 0 10px 24px rgba(0, 0, 0, .1);
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 32px rgba(0, 0, 0, .14);
        }
        .btn i {
            font-size: 14px;
        }
        .card {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid rgba(226, 232, 240, .8);
            box-shadow: var(--shadow-sm);
            transition: all .3s ease;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(37, 99, 235, .18);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .9);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(226, 232, 240, .7);
            height: var(--header-h);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 18px;
            color: var(--text);
        }
        .logo-icon {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--brand), var(--accent));
            color: #fff;
            border-radius: 14px;
            font-size: 18px;
            box-shadow: 0 8px 20px rgba(37, 99, 235, .3);
        }
        .logo-text {
            letter-spacing: .02em;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 0 auto;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            color: var(--muted);
            transition: all .22s ease;
            border: 1px solid transparent;
        }
        .nav-link i {
            font-size: 14px;
            opacity: .85;
        }
        .nav-link:hover {
            color: var(--brand);
            background: rgba(37, 99, 235, .06);
        }
        .nav-link.active {
            color: var(--brand);
            background: rgba(37, 99, 235, .1);
            border-color: rgba(37, 99, 235, .12);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #f1f4f9;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 8px 16px;
            width: 210px;
            transition: all .25s ease;
        }
        .search-box:focus-within {
            border-color: var(--brand);
            box-shadow: 0 0 0 4px rgba(37, 99, 235, .1);
            background: #fff;
        }
        .search-box i {
            font-size: 13px;
            color: var(--muted);
        }
        .search-box input {
            width: 100%;
            font-size: 14px;
            color: var(--text);
            background: transparent;
        }
        .search-box input::placeholder {
            color: #9aa6b5;
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            border: 1px solid var(--border);
            background: #fff;
            font-size: 18px;
            color: var(--text);
            cursor: pointer;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 120px 0 110px;
            overflow: hidden;
        }
        .hero:before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(15, 23, 42, .88), rgba(30, 64, 175, .72), rgba(6, 182, 212, .3));
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .24);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: 999px;
            padding: 8px 18px;
            margin-bottom: 24px;
        }
        .hero-badge i {
            color: #7dd3fc;
        }
        .hero h1 {
            font-size: clamp(34px, 5vw, 54px);
            font-weight: 900;
            line-height: 1.2;
            color: #fff;
            letter-spacing: .01em;
        }
        .hero h1 span {
            color: #7dd3fc;
        }
        .hero-desc {
            color: rgba(255, 255, 255, .9);
            font-size: 18px;
            line-height: 1.8;
            margin: 22px 0 34px;
            max-width: 620px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 44px;
            color: rgba(255, 255, 255, .78);
            font-size: 14px;
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        /* ===== Entry cards ===== */
        .entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .entry-card {
            padding: 34px 30px;
            position: relative;
            overflow: hidden;
        }
        .entry-card:before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--brand), var(--accent));
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .entry-icon {
            width: 58px;
            height: 58px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: #fff;
            margin-bottom: 22px;
            background: linear-gradient(135deg, #3b82f6, #06b6d4);
            box-shadow: 0 10px 24px rgba(37, 99, 235, .22);
        }
        .entry-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .entry-card p {
            color: var(--muted);
            font-size: 15px;
            line-height: 1.7;
        }
        .entry-card .entry-tag {
            display: inline-block;
            margin-top: 18px;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand);
            background: rgba(37, 99, 235, .08);
            padding: 5px 14px;
            border-radius: 999px;
        }

        /* ===== Steps ===== */
        .steps-wrap {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 56px 48px;
            position: relative;
            overflow: hidden;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            counter-reset: step;
        }
        .step-item {
            position: relative;
            padding: 30px 22px;
            background: #f8fafc;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: all .3s ease;
        }
        .step-item:hover {
            background: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .step-num {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand), var(--accent));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            margin-bottom: 18px;
            box-shadow: 0 8px 18px rgba(37, 99, 235, .25);
        }
        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--muted);
        }

        /* ===== Safety ===== */
        .safety-grid {
            display: grid;
            grid-template-columns: .9fr 1.1fr;
            gap: 44px;
            align-items: center;
        }
        .safety-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            min-height: 320px;
            background: url('/assets/images/coverpic/cover-4.png') center/cover no-repeat;
        }
        .safety-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .safety-item {
            display: flex;
            gap: 16px;
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all .25s ease;
        }
        .safety-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .safety-icon {
            width: 42px;
            height: 42px;
            flex-shrink: 0;
            border-radius: 12px;
            background: rgba(37, 99, 235, .1);
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }
        .safety-item h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 5px;
        }
        .safety-item p {
            font-size: 14px;
            color: var(--muted);
        }

        /* ===== Scenario ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .scenario-card {
            overflow: hidden;
            border-radius: var(--radius-lg);
            background: var(--surface);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all .3s ease;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .scenario-cover {
            height: 200px;
            position: relative;
            overflow: hidden;
        }
        .scenario-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .scenario-card:hover .scenario-cover img {
            transform: scale(1.06);
        }
        .scenario-cover:after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(15, 23, 42, .6));
        }
        .scenario-body {
            padding: 26px 26px 30px;
        }
        .scenario-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .scenario-body p {
            color: var(--muted);
            font-size: 15px;
            margin-bottom: 16px;
        }
        .scenario-body ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .scenario-body li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--muted);
        }
        .scenario-body li i {
            color: var(--accent);
            font-size: 12px;
        }

        /* ===== Stats ===== */
        .stats-section {
            background: #0f172a;
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            position: relative;
            overflow: hidden;
        }
        .stats-section:before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(37, 99, 235, .28);
            filter: blur(80px);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 2;
        }
        .stat-item {
            text-align: center;
            color: #fff;
            padding: 20px;
        }
        .stat-item .num {
            font-size: 42px;
            font-weight: 900;
            background: linear-gradient(135deg, #60a5fa, #22d3ee);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-item .label {
            margin-top: 8px;
            color: rgba(255, 255, 255, .78);
            font-size: 14px;
            font-weight: 500;
        }

        /* ===== Detail list ===== */
        .detail-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .detail-card {
            padding: 30px;
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            display: flex;
            gap: 20px;
            transition: all .25s ease;
        }
        .detail-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, .2);
        }
        .detail-card i {
            font-size: 26px;
            color: var(--brand);
            padding: 16px;
            border-radius: 16px;
            background: rgba(37, 99, 235, .08);
            height: fit-content;
        }
        .detail-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .detail-card p {
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 12px;
        }
        .detail-card a {
            font-size: 14px;
            font-weight: 600;
            color: var(--brand);
        }
        .detail-card a:hover {
            color: var(--brand-dark);
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 850px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all .3s ease;
        }
        .faq-item.open {
            border-color: rgba(37, 99, 235, .25);
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 22px 26px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            transition: all .25s ease;
        }
        .faq-question:hover {
            color: var(--brand);
        }
        .faq-question .icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            border-radius: 50%;
            background: rgba(37, 99, 235, .08);
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform .3s ease;
        }
        .faq-item.open .faq-question .icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
            padding: 0 26px;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 26px 24px;
        }
        .faq-answer p {
            color: var(--muted);
            font-size: 15px;
            line-height: 1.8;
            padding-top: 4px;
            border-top: 1px solid var(--border);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1e40af, #2563eb 55%, #06b6d4);
            border-radius: var(--radius-lg);
            padding: 70px 60px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section:after {
            content: "";
            position: absolute;
            bottom: -120px;
            left: -60px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .1);
        }
        .cta-section h2 {
            font-size: clamp(26px, 3.4vw, 38px);
            font-weight: 800;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }
        .cta-section p {
            color: rgba(255, 255, 255, .9);
            max-width: 550px;
            margin: 0 auto 28px;
            font-size: 16px;
            position: relative;
            z-index: 2;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 64px 0 0;
            margin-top: 90px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 42px;
            border-bottom: 1px solid rgba(148, 163, 184, .15);
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 16px;
            color: #fff;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: #94a3b8;
            transition: color .2s ease;
        }
        .footer-col ul a:hover {
            color: #fff;
        }
        .footer-bottom {
            padding: 22px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .main-nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                display: none;
            }
            .main-nav.open {
                display: flex;
            }
            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .search-box {
                display: none;
            }
            .header-actions .btn {
                display: none;
            }
            .entry-grid,
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .safety-grid {
                grid-template-columns: 1fr;
            }
            .detail-layout {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .section {
                padding: 56px 0;
            }
            .logo-text {
                font-size: 15px;
            }
            .logo-icon {
                width: 40px;
                height: 40px;
            }
            .hero {
                padding: 76px 0 66px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-meta {
                flex-direction: column;
                gap: 10px;
            }
            .entry-grid,
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .steps-wrap {
                padding: 32px 20px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .stats-section {
                padding: 40px 24px;
            }
            .detail-card {
                flex-direction: column;
            }
            .cta-section {
                padding: 48px 24px;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: article */
:root {
            --primary: #2E7CF6;
            --primary-dark: #1B5FD9;
            --primary-light: #E8F1FE;
            --accent: #00C9A7;
            --accent-dark: #00A689;
            --dark: #0F172A;
            --text: #334155;
            --text-light: #64748B;
            --bg: #F8FAFC;
            --bg-deep: #0B1220;
            --border: #E2E8F0;
            --radius: 18px;
            --radius-sm: 10px;
            --shadow: 0 8px 30px rgba(15, 23, 42, 0.07);
            --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.12);
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 1.12rem;
            color: var(--dark);
            white-space: nowrap;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 6px 16px rgba(46, 124, 246, 0.3);
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            gap: 4px;
            align-items: center;
            background: var(--bg);
            padding: 4px;
            border-radius: 999px;
            border: 1px solid var(--border);
        }

        .main-nav .nav-link {
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .main-nav .nav-link i {
            font-size: 0.8rem;
        }

        .main-nav .nav-link:hover {
            color: var(--primary);
            background: #fff;
            box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
        }

        .main-nav .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), #4A9BF8);
            box-shadow: 0 6px 18px rgba(46, 124, 246, 0.3);
        }

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

        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 8px 14px;
            gap: 8px;
            width: 200px;
            transition: var(--transition);
        }

        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 124, 246, 0.12);
            background: #fff;
        }

        .nav-search i {
            color: var(--text-light);
            font-size: 0.8rem;
        }

        .nav-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 0.85rem;
            width: 100%;
            color: var(--text);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #4A9BF8);
            color: #fff;
            box-shadow: 0 6px 20px rgba(46, 124, 246, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(46, 124, 246, 0.4);
        }

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

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

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2);
        }

        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 32px rgba(255, 255, 255, 0.3);
        }

        .mobile-menu-btn {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            border: 1px solid var(--border);
            background: #fff;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--text);
        }

        .mobile-drawer {
            display: none;
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 16px 24px 20px;
            flex-direction: column;
            gap: 12px;
        }

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

        .mobile-drawer a {
            padding: 12px 14px;
            border-radius: 12px;
            font-weight: 500;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
            background: var(--bg);
        }

        .mobile-drawer a.active {
            background: var(--primary-light);
            color: var(--primary);
        }

        .article-banner {
            background: linear-gradient(120deg, rgba(11, 18, 32, 0.92) 20%, rgba(27, 95, 217, 0.82) 70%, rgba(0, 201, 167, 0.6)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 68px 0 60px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .article-banner::after {
            content: '';
            position: absolute;
            right: -80px;
            top: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.12), transparent 70%);
            border-radius: 50%;
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 20px;
        }

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

        .breadcrumb i {
            font-size: 0.7rem;
        }

        .article-title {
            font-size: clamp(1.6rem, 3.4vw, 2.6rem);
            font-weight: 900;
            line-height: 1.3;
            max-width: 820px;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.8);
        }

        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.16);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(6px);
        }

        .notice-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 14px;
            padding: 12px 18px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.9);
            margin-top: 24px;
            max-width: 780px;
            backdrop-filter: blur(8px);
        }

        .notice-bar i {
            color: var(--accent);
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 320px;
            gap: 36px;
            padding: 48px 0 20px;
            align-items: start;
        }

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

        .article-cover {
            border-radius: var(--radius) var(--radius) 0 0;
            overflow: hidden;
            position: relative;
            aspect-ratio: 16/9;
            background: var(--bg);
        }

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

        .article-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(15, 23, 42, 0.2));
            pointer-events: none;
        }

        .article-content {
            padding: 36px 40px 0;
        }

        .article-content h2,
        .article-content h3,
        .article-content h4 {
            margin-top: 28px;
            margin-bottom: 12px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.4;
        }

        .article-content h2 {
            font-size: 1.4rem;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
        }

        .article-content h3 {
            font-size: 1.2rem;
        }

        .article-content p {
            margin-bottom: 16px;
            line-height: 1.9;
            color: var(--text);
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0 20px;
            padding-left: 24px;
        }

        .article-content ul {
            list-style: disc;
        }

        .article-content ol {
            list-style: decimal;
        }

        .article-content li {
            margin-bottom: 10px;
            line-height: 1.8;
            padding-left: 4px;
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: var(--bg);
            padding: 18px 22px;
            border-radius: 0 14px 14px 0;
            margin: 22px 0;
            color: var(--text);
            font-style: normal;
        }

        .article-content blockquote p {
            margin-bottom: 0;
        }

        .article-content img {
            border-radius: var(--radius-sm);
            margin: 18px 0;
        }

        .article-content a {
            color: var(--primary);
            font-weight: 500;
            border-bottom: 1px solid transparent;
        }

        .article-content a:hover {
            border-bottom-color: var(--primary);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding: 28px 40px 32px;
            border-top: 1px solid var(--border);
            margin-top: 28px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 16px;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 600;
            transition: var(--transition);
        }

        .tag:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 92px;
        }

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

        .side-card-title {
            font-size: 1rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .side-card-title i {
            color: var(--primary);
        }

        .side-list {
            list-style: none;
        }

        .side-list li {
            border-bottom: 1px dashed var(--border);
            padding: 12px 0;
            font-size: 0.9rem;
            color: var(--text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }

        .side-list li:last-child {
            border-bottom: none;
        }

        .side-list li:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .side-list li span {
            color: var(--text-light);
            font-size: 0.78rem;
            background: var(--bg);
            padding: 2px 10px;
            border-radius: 999px;
        }

        .trending-number {
            width: 24px;
            height: 24px;
            border-radius: 8px;
            background: var(--bg);
            color: var(--text-light);
            font-size: 0.78rem;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-right: 10px;
            flex-shrink: 0;
        }

        .trending-number.top {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
        }

        .side-tip {
            background: linear-gradient(135deg, var(--primary-light), #f0f7ff);
            border-radius: 14px;
            padding: 20px;
            border: 1px solid rgba(46, 124, 246, 0.15);
        }

        .side-tip i {
            color: var(--primary);
            font-size: 1.4rem;
            margin-bottom: 10px;
        }

        .side-tip p {
            font-size: 0.85rem;
            line-height: 1.8;
            color: var(--text);
        }

        .side-tip .btn {
            margin-top: 14px;
            width: 100%;
        }

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

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 32px;
        }

        .section-header h2 {
            font-size: clamp(1.4rem, 2.4vw, 1.9rem);
            font-weight: 900;
            color: var(--dark);
            letter-spacing: -0.02em;
        }

        .section-header p {
            color: var(--text-light);
            font-size: 0.92rem;
        }

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

        .related-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: rgba(46, 124, 246, 0.3);
        }

        .related-card-img {
            overflow: hidden;
            aspect-ratio: 16/10;
            position: relative;
        }

        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .related-card-body {
            padding: 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .related-card-body h3 {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.5;
        }

        .related-card-body p {
            font-size: 0.86rem;
            color: var(--text-light);
            flex: 1;
        }

        .related-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
        }

        .related-card-link:hover {
            gap: 10px;
        }

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

        .faq-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .faq-header .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .faq-header h2 {
            font-size: clamp(1.5rem, 2.6vw, 2rem);
            font-weight: 900;
            color: var(--dark);
        }

        .faq-header p {
            color: var(--text-light);
            margin-top: 10px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 22px 26px;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(46, 124, 246, 0.35);
            box-shadow: var(--shadow);
        }

        .faq-item h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-item h3::before {
            content: 'Q';
            width: 28px;
            height: 28px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border-radius: 9px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .faq-item p {
            margin-top: 12px;
            padding-left: 38px;
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.8;
        }

        .cta-section {
            padding: 70px 0;
            background: linear-gradient(120deg, rgba(11, 18, 32, 0.9), rgba(27, 95, 217, 0.75)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            color: #fff;
            border-radius: 0;
            margin-top: 20px;
        }

        .cta-inner {
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 900;
            line-height: 1.4;
            letter-spacing: -0.01em;
        }

        .cta-inner p {
            margin-top: 14px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
            margin-top: 30px;
        }

        .cta-note {
            margin-top: 18px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.55);
        }

        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }

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

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.8;
            max-width: 360px;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
        }

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

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

        .footer-col a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 22px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }

        .not-found-box {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            padding: 50px 40px;
            text-align: center;
            margin: 40px 0 20px;
        }

        .not-found-box i {
            font-size: 3rem;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .not-found-box h2 {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .not-found-box p {
            color: var(--text-light);
            margin-bottom: 24px;
        }

        @media (max-width: 1024px) {
            .nav-search {
                width: 160px;
            }

            .article-layout {
                grid-template-columns: minmax(0, 1fr) 260px;
                gap: 24px;
            }

            .related-grid {
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            .nav-search,
            .main-nav {
                display: none;
            }

            .mobile-menu-btn {
                display: inline-flex;
            }

            .nav-inner {
                height: 64px;
            }

            .nav-actions .btn-primary {
                display: none;
            }

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

            .article-layout {
                grid-template-columns: 1fr;
                padding-top: 28px;
            }

            .article-content {
                padding: 26px 22px 0;
            }

            .article-tags {
                padding: 22px;
            }

            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 16px;
            }

            .side-card {
                flex: 1 1 calc(50% - 8px);
                min-width: 240px;
            }

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

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

            .cta-section {
                padding: 50px 0;
            }
        }

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

            .logo span:last-child {
                font-size: 1rem;
            }

            .article-title {
                font-size: 1.4rem;
            }

            .article-meta {
                gap: 10px;
            }

            .badge {
                padding: 4px 10px;
                font-size: 0.74rem;
            }

            .notice-bar {
                font-size: 0.8rem;
            }

            .side-card {
                flex: 1 1 100%;
            }

            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }

            .faq-item {
                padding: 18px;
            }

            .faq-item p {
                padding-left: 0;
                margin-top: 14px;
            }

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

            .not-found-box {
                padding: 32px 22px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --accent: #0d9488;
            --accent-light: #14b8a6;
            --deepblue: #0f172a;
            --bg-light: #f8fafc;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-light: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06), 0 1px 2px rgba(15, 23, 42, .04);
            --shadow-md: 0 4px 16px rgba(15, 23, 42, .07);
            --shadow-lg: 0 12px 36px rgba(15, 23, 42, .10);
            --transition-base: all .3s cubic-bezier(.4, 0, .2, 1);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            background: #fff;
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-base);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .98);
            border-bottom: 1px solid rgba(226, 232, 240, .7);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 17px;
            letter-spacing: -0.02em;
            color: var(--deepblue);
            white-space: nowrap;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            box-shadow: 0 4px 12px rgba(37, 99, 235, .25);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 14px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(37, 99, 235, .06);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(37, 99, 235, .10);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: 999px;
            padding: 8px 14px;
            gap: 8px;
            width: 190px;
            transition: var(--transition-base);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
        }
        .search-box i {
            font-size: 13px;
            color: var(--text-muted);
        }
        .search-box input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 13px;
            width: 100%;
            color: var(--text-main);
        }
        .search-box input::placeholder {
            color: #94a3b8;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), #3b82f6);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: 999px;
            box-shadow: 0 4px 12px rgba(37, 99, 235, .30);
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .header-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(37, 99, 235, .40);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 20px;
            color: var(--deepblue);
            cursor: pointer;
            padding: 8px;
        }
        /* Mobile nav */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-lg);
            padding: 16px 24px;
            z-index: 99;
            flex-direction: column;
            gap: 6px;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav .nav-link {
            padding: 12px 14px;
            border-radius: var(--radius-sm);
        }
        /* Hero */
        .page-hero {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 96px 0 80px;
            color: #fff;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(15, 23, 42, .88), rgba(15, 23, 42, .65), rgba(13, 148, 136, .45));
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .15);
            border: 1px solid rgba(255, 255, 255, .25);
            backdrop-filter: blur(10px);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
        }
        .hero-title {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.03em;
            max-width: 720px;
            margin-bottom: 18px;
        }
        .hero-desc {
            font-size: 16px;
            line-height: 1.7;
            opacity: .92;
            max-width: 600px;
            margin-bottom: 30px;
        }
        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition-base);
            cursor: pointer;
            border: none;
        }
        .btn-primary {
            background: #fff;
            color: var(--deepblue);
            box-shadow: 0 4px 16px rgba(0, 0, 0, .15);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, .20);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .35);
            color: #fff;
            backdrop-filter: blur(10px);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, .22);
            transform: translateY(-2px);
        }
        /* Section */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-light);
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 44px;
            flex-wrap: wrap;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: .04em;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 30px;
            font-weight: 800;
            color: var(--deepblue);
            line-height: 1.3;
            letter-spacing: -0.02em;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            margin-top: 8px;
            max-width: 680px;
        }
        .view-all {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(37, 99, 235, .08);
            padding: 8px 18px;
            border-radius: 999px;
            white-space: nowrap;
            transition: var(--transition-base);
        }
        .view-all:hover {
            background: rgba(37, 99, 235, .14);
            transform: translateX(2px);
        }
        /* News cards */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .news-card-img {
            position: relative;
            height: 190px;
            overflow: hidden;
        }
        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-base);
        }
        .news-card:hover .news-card-img img {
            transform: scale(1.04);
        }
        .news-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(8px);
            color: var(--deepblue);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
            box-shadow: var(--shadow-sm);
        }
        .news-card-body {
            padding: 22px 22px 18px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: #94a3b8;
            margin-bottom: 10px;
        }
        .news-meta i {
            font-size: 11px;
        }
        .news-card-title {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--deepblue);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-desc {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .news-card-link {
            margin-top: 16px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
        }
        .news-card-link i {
            font-size: 11px;
            transition: transform .2s;
        }
        .news-card:hover .news-card-link i {
            transform: translateX(4px);
        }
        /* Trending list */
        .trending-wrap {
            display: grid;
            grid-template-columns: 1.2fr .8fr;
            gap: 32px;
            align-items: stretch;
        }
        .trending-main {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 32px;
        }
        .trending-list {
            list-style: none;
        }
        .trending-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid #f1f5f9;
            transition: var(--transition-base);
        }
        .trending-item:last-child {
            border-bottom: none;
        }
        .trending-item:hover {
            padding-left: 8px;
        }
        .rank-num {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 800;
            background: #f1f5f9;
            color: #94a3b8;
            flex-shrink: 0;
        }
        .rank-num.top {
            background: linear-gradient(135deg, #f59e0b, #f97316);
            color: #fff;
            box-shadow: 0 4px 12px rgba(245, 158, 11, .3);
        }
        .rank-num.sec {
            background: linear-gradient(135deg, #94a3b8, #64748b);
            color: #fff;
        }
        .trending-info {
            flex: 1;
            min-width: 0;
        }
        .trending-title {
            font-size: 14.5px;
            font-weight: 600;
            color: var(--deepblue);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: var(--transition-base);
        }
        .trending-item:hover .trending-title {
            color: var(--primary);
        }
        .trending-sub {
            font-size: 12px;
            color: #94a3b8;
            margin-top: 2px;
        }
        .trending-side {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .side-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            flex: 1;
        }
        .side-card-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--deepblue);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .side-card-title i {
            color: var(--primary);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12.5px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            background: var(--bg-light);
            border: 1px solid var(--border-light);
            color: var(--text-muted);
            transition: var(--transition-base);
        }
        .tag-item:hover {
            background: rgba(37, 99, 235, .08);
            border-color: rgba(37, 99, 235, .3);
            color: var(--primary);
        }
        .tag-item.hot {
            background: rgba(245, 158, 11, .1);
            border-color: rgba(245, 158, 11, .25);
            color: #d97706;
        }
        /* Timeline */
        .timeline {
            position: relative;
            max-width: 760px;
            margin: 0 auto;
            padding: 20px 0;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 20px;
            bottom: 20px;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            opacity: .25;
        }
        .timeline-item {
            position: relative;
            padding-left: 40px;
            margin-bottom: 32px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: 6px;
            top: 6px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid #fff;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, .2);
        }
        .timeline-item.accent::before {
            background: var(--accent);
            box-shadow: 0 0 0 3px rgba(13, 148, 136, .2);
        }
        .timeline-date {
            font-size: 12px;
            font-weight: 700;
            color: #94a3b8;
            letter-spacing: .04em;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .timeline-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--deepblue);
            margin-bottom: 6px;
        }
        .timeline-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 600px;
        }
        /* Update card strip */
        .update-strip {
            background: linear-gradient(135deg, var(--deepblue), #1e3a5f);
            border-radius: var(--radius-lg);
            padding: 40px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .update-strip::after {
            content: '';
            position: absolute;
            right: -60px;
            top: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
        }
        .update-strip::before {
            content: '';
            position: absolute;
            right: 40px;
            bottom: -80px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(13, 148, 136, .3);
        }
        .update-strip-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .update-strip-title {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 6px;
        }
        .update-strip-sub {
            font-size: 14px;
            opacity: .85;
        }
        .update-strip-btn {
            background: #fff;
            color: var(--deepblue);
            border-radius: 999px;
            padding: 12px 28px;
            font-weight: 700;
            font-size: 14px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, .2);
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .update-strip-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, .3);
            color: var(--deepblue);
        }
        /* FAQ */
        .faq-wrap {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(37, 99, 235, .3);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 20px 24px;
            font-size: 15px;
            font-weight: 700;
            color: var(--deepblue);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition-base);
        }
        .faq-question i {
            font-size: 13px;
            color: var(--primary);
            transition: transform .3s;
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 22px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        /* CTA */
        .cta-section {
            background: url('/assets/images/backpic/back-1.png') center/cover fixed;
            position: relative;
            padding: 100px 0;
            color: #fff;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 23, 42, .82);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-title {
            font-size: 36px;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }
        .cta-desc {
            font-size: 16px;
            opacity: .9;
            max-width: 560px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-btn-main {
            background: linear-gradient(135deg, var(--primary), #3b82f6);
            color: #fff;
            padding: 14px 34px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 700;
            box-shadow: 0 8px 24px rgba(37, 99, 235, .4);
            transition: var(--transition-base);
        }
        .cta-btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(37, 99, 235, .5);
            color: #fff;
        }
        .cta-btn-ghost {
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .3);
            color: #fff;
            padding: 14px 34px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            backdrop-filter: blur(10px);
            transition: var(--transition-base);
        }
        .cta-btn-ghost:hover {
            background: rgba(255, 255, 255, .2);
            transform: translateY(-2px);
            color: #fff;
        }
        /* Footer */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 18px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin-top: 16px;
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: #94a3b8;
            transition: var(--transition-base);
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 13px;
        }
        .footer-bottom p {
            margin: 0;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .trending-wrap {
                grid-template-columns: 1fr;
            }
            .search-box {
                width: 140px;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: 60px;
            }
            .main-nav, .nav-actions .header-cta, .nav-actions .search-box {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .page-hero {
                padding: 64px 0 56px;
            }
            .hero-title {
                font-size: 30px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .update-strip-inner {
                flex-direction: column;
                text-align: center;
            }
            .cta-title {
                font-size: 28px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }
            .hero-title {
                font-size: 26px;
            }
            .hero-desc {
                font-size: 14px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .trending-main {
                padding: 20px;
            }
            .trending-title {
                font-size: 13.5px;
            }
            .rank-num {
                width: 26px;
                height: 26px;
                font-size: 12px;
            }
            .update-strip {
                padding: 28px 22px;
            }
            .cta-section {
                padding: 70px 0;
            }
            .cta-title {
                font-size: 24px;
            }
        }