/* roulang page: index */
:root {
            --primary: #2563eb;
            --primary-light: #3b82f6;
            --primary-dark: #1e40af;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg: #f8fafc;
            --surface: #ffffff;
            --text: #0f172a;
            --text-muted: #5b6b83;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 12px 35px rgba(30, 64, 175, 0.10);
            --shadow-sm: 0 4px 16px rgba(15, 23, 42, 0.06);
            --transition: 0.25s ease;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            margin: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container-x {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            border: 2px solid transparent;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.30);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(37, 99, 235, 0.35);
        }
        .btn-ghost {
            background: transparent;
            color: var(--text);
            border-color: var(--border);
        }
        .btn-ghost:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #fff;
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.30);
        }
        .btn-accent:hover {
            background: #d97706;
            transform: translateY(-2px);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            background: rgba(37, 99, 235, 0.10);
            color: var(--primary);
        }
        .badge-accent {
            background: rgba(245, 158, 11, 0.12);
            color: #b45309;
        }
        .badge-green {
            background: rgba(16, 185, 129, 0.12);
            color: #047857;
        }
        .section {
            padding: 84px 0;
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 52px;
        }
        .section-head h2 {
            font-size: clamp(28px, 4vw, 38px);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin: 14px 0 12px;
            background: linear-gradient(135deg, #1e40af, #2563eb);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.7;
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.6);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        /* navbar */
        .navbar {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
        }
        .navbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition);
        }
        .nav-link:hover {
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.30);
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 0;
            font-size: 26px;
            color: var(--text);
            cursor: pointer;
            padding: 6px;
        }
        /* mobile nav */
        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 12px 0;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 500;
            border-radius: 10px;
            color: var(--text);
        }
        .mobile-menu a:hover {
            background: rgba(37, 99, 235, 0.06);
            color: var(--primary);
        }
        .mobile-menu a.active {
            color: var(--primary);
            font-weight: 700;
            background: rgba(37, 99, 235, 0.08);
        }
        /* hero */
        .hero {
            position: relative;
            background: linear-gradient(135deg, #0b1e3f 0%, #153a7a 50%, #1e5bbf 100%);
            overflow: hidden;
            padding: 80px 0 90px;
        }
        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            mix-blend-mode: overlay;
        }
        .hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 75% 30%, rgba(59, 130, 246, 0.35) 0%, transparent 50%);
        }
        .hero .container-x {
            position: relative;
            z-index: 2;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
        }
        .hero-title {
            font-size: clamp(36px, 5vw, 56px);
            font-weight: 900;
            line-height: 1.2;
            color: #fff;
            letter-spacing: -0.02em;
            margin: 20px 0 16px;
        }
        .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 460px;
            margin-bottom: 28px;
            line-height: 1.8;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
        }
        .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 36px;
        }
        .hero-stat {
            color: #fff;
        }
        .hero-stat strong {
            font-size: 26px;
            font-weight: 800;
            display: block;
        }
        .hero-stat span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
        }
        .login-panel {
            padding: 32px;
            border-radius: 22px;
            background: rgba(255, 255, 255, 0.96);
            box-shadow: 0 24px 60px rgba(2, 12, 35, 0.35);
        }
        .login-panel h3 {
            font-size: 22px;
            font-weight: 800;
            color: var(--text);
            margin: 0 0 4px;
        }
        .login-panel .sub {
            color: var(--text-muted);
            font-size: 13px;
            margin-bottom: 20px;
        }
        .login-input {
            width: 100%;
            padding: 13px 16px;
            border: 2px solid var(--border);
            border-radius: 12px;
            font-size: 15px;
            background: #f9fbfd;
            transition: all var(--transition);
        }
        .login-input:focus {
            outline: none;
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.10);
        }
        .login-btn {
            width: 100%;
            padding: 14px;
            border: 0;
            border-radius: 12px;
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
            margin-top: 8px;
        }
        .login-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(37, 99, 235, 0.4);
        }
        .login-links {
            display: flex;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 12px;
        }
        .login-links a {
            color: var(--primary);
            font-weight: 500;
        }
        .login-note {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-top: 18px;
            padding: 10px 12px;
            background: #f0fdf9;
            border-radius: 10px;
            color: #047857;
            font-size: 12.5px;
        }
        /* stat bar */
        .stat-bar {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 40px 0;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .stat-item {
            text-align: center;
            padding: 20px 16px;
            border-radius: var(--radius);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .stat-item:hover {
            border-color: var(--primary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
        }
        .stat-item .icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 10px;
        }
        .stat-item strong {
            font-size: 28px;
            font-weight: 800;
            display: block;
            line-height: 1.3;
        }
        .stat-item span {
            color: var(--text-muted);
            font-size: 14px;
        }
        /* features */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            padding: 34px 28px;
            border-radius: var(--radius);
            background: #fff;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(37, 99, 235, 0.3);
        }
        .feature-card .icon {
            width: 62px;
            height: 62px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            margin-bottom: 18px;
            background: linear-gradient(135deg, #eff6ff, #dbeafe);
            color: var(--primary);
        }
        .feature-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin: 0 0 10px;
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: 14.5px;
            line-height: 1.75;
        }
        /* category cards */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .category-card {
            border-radius: 20px;
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }
        .category-card .cover {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .category-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .category-card:hover .cover img {
            transform: scale(1.05);
        }
        .category-card .cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(2, 8, 23, 0.6) 0%, transparent 50%);
        }
        .category-card .body {
            padding: 24px;
        }
        .category-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 0 0 8px;
        }
        .category-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .category-link i {
            transition: transform var(--transition);
        }
        .category-link:hover i {
            transform: translateX(4px);
        }
        /* news info */
        .news-wrap {
            background: #f1f5f9;
            padding: 84px 0;
        }
        .news-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
        }
        .news-list-wrap {
            background: #fff;
            border-radius: 20px;
            border: 1px solid var(--border);
            padding: 28px;
        }
        .news-list-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 18px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--border);
        }
        .news-list-head h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0;
        }
        .news-item {
            display: block;
            padding: 16px 0;
            border-bottom: 1px solid #f1f5f9;
            transition: all var(--transition);
        }
        .news-item:last-child {
            border-bottom: 0;
        }
        .news-item:hover {
            padding-left: 8px;
        }
        .news-item h4 {
            font-size: 16px;
            font-weight: 600;
            margin: 0 0 4px;
            color: var(--text);
        }
        .news-item p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0 0 6px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 12.5px;
            color: #94a3b8;
        }
        .news-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: #eff6ff;
            padding: 2px 10px;
            border-radius: 50px;
        }
        .empty-tip {
            text-align: center;
            color: var(--text-muted);
            padding: 40px 20px;
            font-size: 15px;
            background: #f8fafc;
            border-radius: 12px;
        }
        .side-cards {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .side-card {
            border-radius: 18px;
            overflow: hidden;
            border: 1px solid var(--border);
            background: #fff;
            display: flex;
            transition: all var(--transition);
        }
        .side-card:hover {
            box-shadow: var(--shadow-sm);
            transform: translateY(-3px);
        }
        .side-card img {
            width: 130px;
            height: 130px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .side-card .info {
            padding: 16px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .side-card .info h4 {
            font-size: 15px;
            font-weight: 700;
            margin: 0 0 6px;
        }
        .side-card .info p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0 0 8px;
            line-height: 1.5;
        }
        .side-card .info a {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
        }
        /* steps */
        .step-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: #fff;
            border-radius: 20px;
            border: 1px solid var(--border);
            position: relative;
            transition: all var(--transition);
        }
        .step-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }
        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin: 0 0 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin: 0;
        }
        /* faq */
        .faq-wrap {
            background: #fff;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            background: #fff;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.3);
        }
        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            background: #fff;
            border: 0;
            width: 100%;
            text-align: left;
            color: var(--text);
            transition: all var(--transition);
        }
        .faq-q i {
            font-size: 18px;
            color: var(--primary);
            transition: transform 0.3s ease;
        }
        .faq-item.expanded .faq-q i {
            transform: rotate(45deg);
        }
        .faq-a {
            display: none;
            padding: 0 24px 22px;
            color: var(--text-muted);
            font-size: 14.5px;
            line-height: 1.75;
        }
        .faq-item.expanded .faq-a {
            display: block;
        }
        /* cta */
        .cta-section {
            position: relative;
            padding: 90px 0;
            text-align: center;
            background: linear-gradient(135deg, #0b1e3f, #1d4ed8);
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
        }
        .cta-section .container-x {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: clamp(30px, 4vw, 42px);
            font-weight: 800;
            color: #fff;
            margin: 0 0 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 17px;
            max-width: 540px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-white {
            background: #fff;
            color: #1d4ed8;
        }
        .btn-white:hover {
            background: #eff6ff;
            transform: translateY(-2px);
        }
        .btn-outline-white {
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            background: transparent;
        }
        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }
        /* footer */
        .footer {
            background: #0b1220;
            color: #94a3b8;
            padding: 60px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
            max-width: 300px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin: 0 0 14px;
        }
        .footer-col a {
            display: block;
            color: #94a3b8;
            font-size: 14px;
            padding: 4px 0;
            transition: all var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
        }
        .footer-bottom a {
            color: #64748b;
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-desc {
                max-width: 100%;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .nav-cta-desktop {
                display: none;
            }
            .section {
                padding: 60px 0;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .hero-stats {
                flex-wrap: wrap;
                gap: 20px;
            }
            .login-panel {
                padding: 24px;
            }
            .container-x {
                padding: 0 20px;
            }
        }
        @media (max-width: 520px) {
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stat-item {
                padding: 16px 10px;
            }
            .stat-item strong {
                font-size: 22px;
            }
            .step-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 30px;
            }
            .cta-btns .btn {
                width: 100%;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #3b82f6;
            --accent: #f59e0b;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --text-dark: #0f172a;
            --text-body: #334155;
            --text-light: #64748b;
            --border-light: #e2e8f0;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.5rem;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.1);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            background-color: var(--bg-light);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 16px;
            -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;
        }

        input,
        textarea {
            font-family: inherit;
        }

        .container-x {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* ===== Header / Nav ===== */
        .navbar {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226,232,240,0.6);
            transition: var(--transition);
        }

        .navbar.scrolled {
            box-shadow: 0 4px 24px rgba(15,23,42,0.08);
        }

        .navbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 1.5rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            margin: 0 auto;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.1rem;
            border-radius: 999px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            position: relative;
            transition: var(--transition);
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--brand-50);
        }

        .nav-link.active {
            color: var(--primary);
            background: rgba(37,99,235,0.1);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
        }

        .nav-cta-desktop {
            white-space: nowrap;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--text-dark);
            background: rgba(15,23,42,0.04);
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(37,99,235,0.1);
            color: var(--primary);
        }

        .mobile-menu {
            display: none;
            padding: 0.5rem 1.5rem 1.25rem;
            background: #fff;
            border-top: 1px solid var(--border-light);
            flex-direction: column;
            gap: 0.25rem;
        }

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

        .mobile-menu a {
            padding: 0.8rem 1rem;
            border-radius: 10px;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
        }

        .mobile-menu a:hover {
            background: var(--brand-50);
            color: var(--primary);
        }

        .mobile-menu a.active {
            background: rgba(37,99,235,0.08);
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.7rem 1.5rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.95rem;
            line-height: 1.4;
            transition: var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #3b82f6, #1d4ed8);
            color: #fff;
            box-shadow: 0 4px 14px rgba(37,99,235,0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37,99,235,0.4);
            background: linear-gradient(135deg, #2563eb, #1e40af);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(37,99,235,0.3);
        }

        .btn-outline {
            background: transparent;
            border-color: #cbd5e1;
            color: var(--text-body);
            backdrop-filter: blur(4px);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(37,99,235,0.05);
            transform: translateY(-2px);
        }

        .btn-white {
            background: #fff;
            color: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(0,0,0,0.12);
        }

        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.18);
            color: var(--primary);
        }

        .btn:focus-visible,
        .nav-link:focus-visible,
        .nav-toggle:focus-visible {
            outline: 3px solid rgba(37,99,235,0.4);
            outline-offset: 2px;
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            padding: 6rem 0 4.5rem;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 60%, #1e40af 100%);
            color: #fff;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(59,130,246,0.25) 0%, transparent 70%);
            border-radius: 50%;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(245,158,11,0.15) 0%, transparent 70%);
            border-radius: 50%;
        }

        .page-hero .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 1rem;
            background: rgba(255,255,255,0.12);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 500;
            color: rgba(255,255,255,0.9);
            margin-bottom: 1.5rem;
            backdrop-filter: blur(8px);
        }

        .page-hero h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 1.25rem;
        }

        .page-hero h1 span {
            background: linear-gradient(135deg, #93c5fd, #60a5fa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-hero p.lead {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.8);
            max-width: 640px;
            margin-bottom: 2rem;
            line-height: 1.8;
        }

        .hero-stats {
            display: flex;
            gap: 2.5rem;
            margin-top: 2.5rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.15);
            flex-wrap: wrap;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 0.15rem;
        }

        .hero-stat .num {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
        }

        .hero-stat .label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.65);
        }

        /* ===== Section ===== */
        .section {
            padding: 5rem 0;
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 3rem;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.35rem 1rem;
            background: rgba(37,99,235,0.08);
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 1.25rem;
            letter-spacing: 0.02em;
        }

        .section-title {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.25;
            letter-spacing: -0.01em;
            margin-bottom: 1rem;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ===== Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 2rem 1.75rem;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, #3b82f6, #60a5fa);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(37,99,235,0.2);
        }

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 1.25rem;
            position: relative;
        }

        .feature-icon.blue {
            background: linear-gradient(135deg, #dbeafe, #bfdbfe);
            color: #1d4ed8;
        }

        .feature-icon.amber {
            background: linear-gradient(135deg, #fef3c7, #fde68a);
            color: #b45309;
        }

        .feature-icon.green {
            background: linear-gradient(135deg, #d1fae5, #a7f3d0);
            color: #047857;
        }

        .feature-icon.purple {
            background: linear-gradient(135deg, #ede9fe, #ddd6fe);
            color: #6d28d9;
        }

        .feature-icon.rose {
            background: linear-gradient(135deg, #ffe4e6, #fecdd3);
            color: #be123c;
        }

        .feature-icon.cyan {
            background: linear-gradient(135deg, #cffafe, #a5f3fc);
            color: #0e7490;
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.65rem;
        }

        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.75;
        }

        /* ===== Guide / Steps ===== */
        .steps-wrapper {
            background: #fff;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            padding: 3rem;
            position: relative;
            overflow: hidden;
        }

        .steps-wrapper::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(37,99,235,0.06) 0%, transparent 70%);
            border-radius: 50%;
        }

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

        .step-item {
            position: relative;
            text-align: center;
        }

        .step-item:not(:last-child)::after {
            content: '';
            position: absolute;
            top: 36px;
            right: -1rem;
            width: 2rem;
            height: 2px;
            background: linear-gradient(90deg, #3b82f6, transparent);
            opacity: 0.3;
        }

        .step-num {
            width: 72px;
            height: 72px;
            margin: 0 auto 1.25rem;
            border-radius: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, #eff6ff, #dbeafe);
            color: var(--primary);
            border: 2px solid rgba(37,99,235,0.15);
        }

        .step-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }

        .step-item p {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Content List ===== */
        .content-panel {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .content-list-item {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            padding: 1.25rem 1.75rem;
            border-bottom: 1px solid rgba(226,232,240,0.7);
            transition: var(--transition);
        }

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

        .content-list-item:hover {
            background: rgba(37,99,235,0.02);
        }

        .content-list-item .item-cover {
            width: 64px;
            height: 64px;
            border-radius: 12px;
            overflow: hidden;
            flex-shrink: 0;
            background: #f1f5f9;
        }

        .content-list-item .item-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

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

        .content-list-item .item-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.3rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .content-list-item .item-meta {
            font-size: 0.82rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }

        .content-list-item .item-meta .tag {
            padding: 0.15rem 0.6rem;
            background: rgba(37,99,235,0.08);
            color: var(--primary);
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 500;
        }

        /* ===== Image cards ===== */
        .guide-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }

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

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(37,99,235,0.2);
        }

        .guide-card .card-cover {
            position: relative;
            height: 190px;
            overflow: hidden;
        }

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

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

        .guide-card .cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15,23,42,0.4) 0%, transparent 60%);
            display: flex;
            align-items: flex-end;
            padding: 1rem;
        }

        .guide-card .cover-overlay .badge {
            padding: 0.3rem 0.9rem;
            background: rgba(255,255,255,0.92);
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--primary-dark);
        }

        .guide-card .card-body {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .guide-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.6rem;
        }

        .guide-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.7;
            flex: 1;
        }

        .guide-card .card-footer {
            padding: 1rem 1.5rem;
            border-top: 1px solid var(--border-light);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: var(--primary);
            font-weight: 500;
        }

        /* ===== Data ===== */
        .data-band {
            background: linear-gradient(135deg, #0f172a, #1e3a8a);
            border-radius: var(--radius-xl);
            padding: 3rem;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .data-band::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: rgba(59,130,246,0.3);
            border-radius: 50%;
            filter: blur(60px);
        }

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

        .data-item {
            text-align: center;
            padding: 1.5rem 1rem;
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .data-item:hover {
            background: rgba(255,255,255,0.1);
            transform: translateY(-4px);
        }

        .data-item .number {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 0.35rem;
        }

        .data-item .number span {
            font-size: 1.2rem;
            margin-left: 2px;
            opacity: 0.7;
        }

        .data-item .label {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.7);
        }

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

        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }

        .faq-item:hover {
            border-color: rgba(37,99,235,0.25);
            box-shadow: var(--shadow-md);
        }

        .faq-item details {
            cursor: pointer;
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.25rem 1.5rem;
            font-weight: 600;
            color: var(--text-dark);
            font-size: 0.98rem;
            list-style: none;
            transition: var(--transition);
        }

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

        .faq-item summary .icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(37,99,235,0.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            flex-shrink: 0;
            transition: transform 0.3s ease, background 0.3s ease;
        }

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

        .faq-item .answer {
            padding: 0 1.5rem 1.5rem;
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1e3a8a, #2563eb);
            border-radius: var(--radius-xl);
            padding: 3.5rem;
            position: relative;
            overflow: hidden;
            color: #fff;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 60%);
            border-radius: 50%;
        }

        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            margin-bottom: 1rem;
            position: relative;
            z-index: 2;
        }

        .cta-section p {
            font-size: 1rem;
            color: rgba(255,255,255,0.85);
            max-width: 560px;
            margin: 0 auto 2rem;
            position: relative;
            z-index: 2;
        }

        .cta-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        /* ===== Footer ===== */
        .footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 4rem 0 2rem;
            margin-top: 5rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 3rem;
            padding-bottom: 3rem;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

        .footer-brand .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1.25rem;
        }

        .footer-brand .logo i {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, #3b82f6, #1d4ed8);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.95rem;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 280px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 1.25rem;
        }

        .footer-col a {
            display: block;
            padding: 0.3rem 0;
            font-size: 0.88rem;
            color: #94a3b8;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: #fff;
            transform: translateX(4px);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 2rem;
            font-size: 0.82rem;
            color: #64748b;
            flex-wrap: wrap;
            gap: 1rem;
        }

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

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

            .step-item:nth-child(2)::after {
                display: none;
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }

        @media (max-width: 768px) {
            .container-x {
                padding-left: 1rem;
                padding-right: 1rem;
            }

            .navbar-inner {
                height: 64px;
            }

            .nav-links {
                display: none;
            }

            .nav-cta-desktop {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .section {
                padding: 3.5rem 0;
            }

            .page-hero {
                padding: 4rem 0 3rem;
            }

            .hero-stats {
                gap: 1.5rem;
                margin-top: 2rem;
                padding-top: 1.5rem;
            }

            .hero-stat .num {
                font-size: 1.4rem;
            }

            .feature-grid,
            .guide-cards {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }

            .steps-wrapper {
                padding: 2rem 1.25rem;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .step-item:not(:last-child)::after {
                display: none;
            }

            .content-list-item {
                padding: 1rem;
                gap: 0.8rem;
            }

            .content-list-item .item-cover {
                width: 48px;
                height: 48px;
            }

            .data-band {
                padding: 2rem 1.5rem;
            }

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

            .data-item .number {
                font-size: 1.6rem;
            }

            .faq-item summary {
                padding: 1rem 1.25rem;
                font-size: 0.9rem;
                gap: 0.8rem;
            }

            .faq-item .answer {
                padding: 0 1.25rem 1.25rem;
                font-size: 0.88rem;
            }

            .cta-section {
                padding: 2.5rem 1.5rem;
            }

            .footer {
                padding-top: 3rem;
                margin-top: 3rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
                gap: 0.5rem;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.7rem;
            }

            .hero-badge {
                font-size: 0.75rem;
                padding: 0.3rem 0.8rem;
            }

            .hero-stats {
                flex-direction: column;
                gap: 1rem;
            }

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

            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }

            .data-item {
                padding: 1rem 0.75rem;
            }

            .data-item .number {
                font-size: 1.4rem;
            }

            .content-list-item .item-cover {
                display: none;
            }

            .guide-card .card-cover {
                height: 160px;
            }

            .cta-section h2 {
                font-size: 1.4rem;
            }

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

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

/* roulang page: article */
:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --accent: #06b6d4;
    --bg-body: #f4f7fb;
    --bg-white: #ffffff;
    --text: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --shadow-sm: 0 2px 10px rgba(15,23,42,0.05);
    --shadow: 0 6px 24px rgba(15,23,42,0.08);
    --shadow-lg: 0 12px 40px rgba(37,99,235,0.16);
    --radius: 16px;
    --radius-sm: 10px;
    --nav-height: 72px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg-body);
    color: var(--text);
    line-height: 1.6;
}
a {
    text-decoration: none;
    color: inherit;
}
img {
    max-width: 100%;
    display: block;
}
ul, ol {
    list-style: none;
}

.container-x {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}

/* ===== 导航栏 ===== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.86);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.7);
    height: var(--nav-height);
    transition: box-shadow 0.3s ease;
}
.navbar.scrolled {
    box-shadow: var(--shadow-sm);
}
.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
}
.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 15px;
    color: var(--text-secondary);
    transition: all 0.25s ease;
}
.nav-link:hover {
    color: var(--primary);
    background: rgba(37, 99, 235, 0.07);
}
.nav-link.active {
    color: #ffffff;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.32);
}
.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid var(--border);
    background: #ffffff;
    border-radius: 12px;
    font-size: 18px;
    color: var(--text);
    cursor: pointer;
    align-items: center;
    justify-content: center;
}
.nav-toggle:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}
.mobile-menu {
    display: none;
    background: #ffffff;
    border-top: 1px solid var(--border);
    padding: 12px 20px 20px;
    flex-direction: column;
    gap: 6px;
}
.mobile-menu.open {
    display: flex;
}
.mobile-menu a {
    padding: 12px 16px;
    border-radius: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: background 0.2s;
}
.mobile-menu a:hover {
    background: rgba(37, 99, 235, 0.06);
}
.mobile-menu a.active {
    background: rgba(37, 99, 235, 0.08);
    color: var(--primary);
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 700;
    border-radius: 12px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    text-align: center;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 26px rgba(37, 99, 235, 0.4);
}
.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 3px 10px rgba(37, 99, 235, 0.3);
}
.btn-outline {
    background: #ffffff;
    border-color: var(--border);
    color: var(--text);
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.08);
}
.btn-lg {
    padding: 14px 36px;
    font-size: 16px;
}

/* ===== 文章页 Hero ===== */
.article-banner {
    position: relative;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    padding: 72px 0 64px;
}
.article-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.82), rgba(30, 58, 138, 0.65));
}
.article-banner > .container-x {
    position: relative;
    z-index: 2;
}
.article-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 18px;
}
.article-breadcrumb a {
    color: rgba(255, 255, 255, 0.85);
}
.article-breadcrumb a:hover {
    color: #ffffff;
}
.category-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #ffffff;
    font-size: 13px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 999px;
    margin-bottom: 14px;
}
.article-banner h1 {
    color: #ffffff;
    font-size: 34px;
    font-weight: 800;
    line-height: 1.35;
    letter-spacing: -0.02em;
    max-width: 860px;
    margin-bottom: 16px;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
}

/* ===== 正文区域 ===== */
.article-content-wrap {
    padding: 48px 0 60px;
}
.article-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 32px;
    align-items: start;
}
.article-main {
    min-width: 0;
}
.article-card {
    background: #ffffff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 36px;
    border: 1px solid rgba(226, 232, 240, 0.5);
}
.article-body {
    font-size: 16px;
    line-height: 1.85;
    color: #1e293b;
}
.article-body h2 {
    font-size: 24px;
    font-weight: 800;
    color: var(--text);
    margin: 34px 0 16px;
    padding-left: 14px;
    border-left: 4px solid var(--primary);
}
.article-body h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--text);
    margin: 26px 0 12px;
}
.article-body p {
    margin: 16px 0;
}
.article-body ul,
.article-body ol {
    padding-left: 24px;
    margin: 16px 0;
}
.article-body ul {
    list-style: disc;
}
.article-body ol {
    list-style: decimal;
}
.article-body li {
    margin-bottom: 8px;
}
.article-body blockquote {
    background: rgba(37, 99, 235, 0.05);
    border-left: 4px solid var(--primary);
    padding: 16px 22px;
    border-radius: 0 12px 12px 0;
    margin: 22px 0;
    color: var(--text-secondary);
}
.article-body img {
    border-radius: 12px;
    margin: 22px 0;
    box-shadow: var(--shadow);
}
.article-body a {
    color: var(--primary);
    font-weight: 600;
    border-bottom: 1px solid rgba(37, 99, 235, 0.3);
    transition: border-color 0.2s;
}
.article-body a:hover {
    border-color: var(--primary);
}

.article-not-found {
    text-align: center;
    padding: 80px 24px;
}
.article-not-found i {
    font-size: 54px;
    color: #94a3b8;
    margin-bottom: 18px;
}
.article-not-found h2 {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 10px;
}
.article-not-found p {
    color: var(--text-muted);
    margin-bottom: 26px;
}

/* ===== 侧边栏 ===== */
.side-card {
    background: #ffffff;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s, transform 0.3s;
}
.side-card:hover {
    box-shadow: var(--shadow);
}
.side-card-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 18px;
}
.side-card-title i {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    border-radius: 8px;
    font-size: 15px;
}
.side-service-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px dashed var(--border);
}
.side-service-item:last-child {
    border-bottom: none;
}
.side-service-item i {
    color: var(--primary);
    font-size: 16px;
    margin-top: 4px;
}
.side-service-item strong {
    font-size: 15px;
    font-weight: 700;
    display: block;
    margin-bottom: 2px;
}
.side-service-item span {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
}
.side-nav-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.25s;
    margin-bottom: 4px;
}
.side-nav-item:hover {
    background: rgba(37, 99, 235, 0.06);
    color: var(--primary);
}
.side-nav-item i {
    font-size: 12px;
    color: var(--text-muted);
}

/* ===== 推荐板块 ===== */
.recommend-section {
    padding: 52px 0;
    background: #ffffff;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.section-head {
    text-align: center;
    margin-bottom: 36px;
}
.section-head .section-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(37, 99, 235, 0.08);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 999px;
    margin-bottom: 12px;
}
.section-head h2 {
    font-size: 30px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text);
}
.section-head p {
    color: var(--text-muted);
    margin-top: 8px;
    font-size: 16px;
}
.recommend-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.recommend-card {
    background: var(--bg-body);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: transform 0.3s, box-shadow 0.3s;
}
.recommend-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.recommend-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}
.recommend-card-body {
    padding: 22px;
}
.recommend-card-body h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
}
.recommend-card-body p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.65;
    margin-bottom: 14px;
}
.recommend-card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
}
.recommend-card-link:hover {
    gap: 10px;
}
.recommend-card-link i {
    transition: transform 0.2s;
}

/* ===== 平台亮点 ===== */
.features-section {
    padding: 56px 0;
    background: var(--bg-body);
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.feature-card {
    background: #ffffff;
    border-radius: var(--radius);
    padding: 28px 24px;
    text-align: center;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s, box-shadow 0.3s;
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 18px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #ffffff;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
}
.feature-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
}
.feature-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ===== FAQ ===== */
.faq-section {
    padding: 56px 0;
    background: #ffffff;
}
.faq-wrap {
    max-width: 820px;
    margin: 0 auto;
}
.faq-item {
    background: var(--bg-body);
    border: 1px solid var(--border);
    border-radius: 14px;
    margin-bottom: 14px;
    overflow: hidden;
    transition: box-shadow 0.3s;
}
.faq-item:hover {
    box-shadow: var(--shadow-sm);
}
.faq-item summary {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 22px;
    cursor: pointer;
    font-weight: 700;
    font-size: 16px;
    color: var(--text);
    list-style: none;
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary i {
    color: var(--primary);
    font-size: 16px;
    transition: transform 0.3s;
}
.faq-item[open] summary i {
    transform: rotate(90deg);
}
.faq-answer {
    padding: 0 22px 20px 50px;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.75;
}
.faq-answer a {
    color: var(--primary);
    font-weight: 600;
}

/* ===== CTA ===== */
.cta-section {
    padding: 70px 0;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    position: relative;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(29, 78, 216, 0.92), rgba(12, 74, 110, 0.88));
}
.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}
.cta-content h2 {
    color: #ffffff;
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 14px;
}
.cta-content p {
    color: rgba(255, 255, 255, 0.88);
    font-size: 17px;
    margin-bottom: 28px;
}

/* ===== 页脚 ===== */
.footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 60px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}
.footer-brand .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.footer-brand .logo i {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
    color: #ffffff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}
.footer-brand .logo span {
    font-size: 20px;
    font-weight: 800;
    color: #ffffff;
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    max-width: 320px;
}
.footer-col h4 {
    color: #ffffff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 18px;
}
.footer-col a {
    display: block;
    padding: 6px 0;
    font-size: 14px;
    color: #94a3b8;
    transition: color 0.2s, padding-left 0.2s;
}
.footer-col a:hover {
    color: #ffffff;
    padding-left: 6px;
}
.footer-bottom {
    border-top: 1px solid rgba(148, 163, 184, 0.2);
    padding: 22px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 13px;
    color: #64748b;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .article-grid {
        grid-template-columns: 1fr;
    }
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .nav-cta-desktop {
        display: none !important;
    }
    .nav-toggle {
        display: flex;
    }
    .mobile-menu.open {
        display: flex;
    }
    .article-banner {
        padding: 48px 0 40px;
    }
    .article-banner h1 {
        font-size: 26px;
    }
    .article-card {
        padding: 24px;
    }
    .recommend-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px 20px;
    }
    .cta-section {
        padding: 50px 0;
    }
    .cta-content h2 {
        font-size: 26px;
    }
}
@media (max-width: 520px) {
    .container-x {
        padding-left: 16px;
        padding-right: 16px;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .article-banner h1 {
        font-size: 22px;
    }
    .article-meta {
        gap: 12px;
        font-size: 13px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .section-head h2 {
        font-size: 24px;
    }
}

/* roulang page: category2 */
:root {
            --primary: #1e40af;
            --primary-dark: #1e3a8a;
            --primary-light: #3b82f6;
            --accent: #f59e0b;
            --surface: #f8fafc;
            --ink: #0f172a;
            --ink-soft: #475569;
            --ink-mute: #94a3b8;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: #ffffff;
            color: var(--ink);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

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

        .container-x {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
            transition: box-shadow var(--transition);
        }

        .navbar.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-soft);
            padding: 6px 2px;
            white-space: nowrap;
            transition: color var(--transition);
        }

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

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

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

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: 12px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(30, 64, 175, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(30, 64, 175, 0.35);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(30, 64, 175, 0.3);
        }

        .btn-outline {
            border: 2px solid var(--border);
            color: var(--ink-soft);
            background: #fff;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(30, 64, 175, 0.04);
        }

        .btn-outline:active {
            transform: scale(0.98);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            color: var(--ink);
            font-size: 20px;
            transition: background var(--transition);
        }

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

        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: #fff;
            padding: 12px 24px 20px;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
            flex-direction: column;
            gap: 12px;
            z-index: 99;
        }

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

        .mobile-menu a {
            padding: 10px 12px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-soft);
            transition: all var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--surface);
            color: var(--primary);
        }

        .hero-area {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 140px 0 100px;
            margin-top: 72px;
            color: #fff;
        }

        .hero-area::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 64, 175, 0.85) 50%, rgba(30, 64, 175, 0.70) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 680px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(8px);
            padding: 6px 16px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 24px;
        }

        .hero-area h1 {
            font-size: 48px;
            line-height: 1.2;
            font-weight: 800;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }

        .hero-area p {
            font-size: 18px;
            line-height: 1.8;
            opacity: 0.9;
            margin-bottom: 32px;
        }

        .banner-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 72px 0;
            margin-top: 72px;
        }

        .banner-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 64, 175, 0.92), rgba(15, 23, 42, 0.88));
        }

        .banner-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
            color: #fff;
        }

        .banner-content h1 {
            font-size: 40px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .banner-content p {
            font-size: 17px;
            opacity: 0.85;
            margin-bottom: 28px;
        }

        .section {
            padding: 100px 0;
        }

        .section-alt {
            background: var(--surface);
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 60px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(30, 64, 175, 0.08);
            padding: 6px 16px;
            border-radius: 100px;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--ink);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--ink-soft);
            line-height: 1.7;
        }

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

        .feature-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 36px 32px;
            border: 1px solid var(--border);
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(30, 64, 175, 0.2);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
            color: #fff;
        }

        .feature-icon.blue {
            background: linear-gradient(135deg, #3b82f6, #1e40af);
        }

        .feature-icon.amber {
            background: linear-gradient(135deg, #fbbf24, #d97706);
        }

        .feature-icon.emerald {
            background: linear-gradient(135deg, #34d399, #059669);
        }

        .feature-icon.rose {
            background: linear-gradient(135deg, #fb7185, #e11d48);
        }

        .feature-icon.violet {
            background: linear-gradient(135deg, #a78bfa, #7c3aed);
        }

        .feature-icon.cyan {
            background: linear-gradient(135deg, #22d3ee, #0891b2);
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--ink);
        }

        .feature-card p {
            font-size: 15px;
            color: var(--ink-soft);
            line-height: 1.75;
        }

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

        .tip-card {
            display: flex;
            gap: 20px;
            background: #fff;
            border-radius: var(--radius);
            padding: 28px;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .tip-card:hover {
            border-color: rgba(30, 64, 175, 0.25);
            box-shadow: var(--shadow);
        }

        .tip-num {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(30, 64, 175, 0.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
        }

        .tip-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .tip-card p {
            font-size: 15px;
            color: var(--ink-soft);
            line-height: 1.7;
        }

        .process-row {
            display: flex;
            align-items: center;
            gap: 24px;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 32px;
            overflow-x: auto;
            margin: 0 -12px;
        }

        .process-step {
            flex: 1;
            min-width: 180px;
            text-align: center;
            position: relative;
            padding: 24px 16px;
            border-radius: 12px;
            background: var(--surface);
            transition: all var(--transition);
        }

        .process-step:hover {
            background: rgba(30, 64, 175, 0.05);
            transform: translateY(-4px);
        }

        .process-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 12px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .process-step h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 13px;
            color: var(--ink-soft);
            line-height: 1.5;
        }

        .process-connector {
            flex-shrink: 0;
            color: var(--ink-mute);
            font-size: 18px;
        }

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

        .data-block {
            text-align: center;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 40px 24px;
            transition: all var(--transition);
        }

        .data-block:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .data-number {
            font-size: 44px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }

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

        .data-block p {
            font-size: 14px;
            color: var(--ink-soft);
        }

        .login-card {
            background: #fff;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
            display: grid;
            grid-template-columns: 1.2fr 1fr;
        }

        .login-visual {
            background-image: url('/assets/images/coverpic/cover-3.png');
            background-size: cover;
            background-position: center;
            min-height: 420px;
            position: relative;
        }

        .login-visual::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 64, 175, 0.3), rgba(15, 23, 42, 0.2));
        }

        .login-visual-content {
            position: absolute;
            bottom: 32px;
            left: 32px;
            right: 32px;
            color: #fff;
            z-index: 1;
        }

        .login-visual-content h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
        }

        .login-visual-content p {
            font-size: 14px;
            opacity: 0.9;
            text-shadow: 0 1px 8px rgba(0, 0, 0, 0.3);
        }

        .login-form-wrap {
            padding: 48px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .login-form-wrap h3 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 6px;
        }

        .login-form-wrap > p {
            font-size: 14px;
            color: var(--ink-soft);
            margin-bottom: 28px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--ink);
        }

        .form-input {
            width: 100%;
            padding: 12px 16px;
            padding-left: 44px;
            border: 2px solid var(--border);
            border-radius: 12px;
            font-size: 15px;
            transition: all var(--transition);
            background: #fff;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(30, 64, 175, 0.1);
        }

        .form-input-wrap {
            position: relative;
        }

        .form-input-wrap i {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--ink-mute);
            font-size: 15px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 24px 28px;
            margin-bottom: 14px;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(30, 64, 175, 0.2);
            box-shadow: var(--shadow);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            gap: 16px;
        }

        .faq-question h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            flex: 1;
        }

        .faq-question i {
            color: var(--primary);
            font-size: 18px;
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 200px;
        }

        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }

        .faq-answer p {
            padding-top: 14px;
            font-size: 15px;
            color: var(--ink-soft);
            line-height: 1.75;
            border-top: 1px solid var(--surface);
        }

        .cta-section {
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            position: relative;
            padding: 100px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.94), rgba(30, 64, 175, 0.88));
        }

        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
            color: #fff;
        }

        .cta-content h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-content p {
            font-size: 18px;
            opacity: 0.85;
            margin-bottom: 32px;
        }

        .footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 80px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(148, 163, 184, 0.15);
        }

        .footer-brand .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .logo i {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, #3b82f6, #1e40af);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 340px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            padding: 6px 0;
            color: #94a3b8;
            transition: all var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            font-size: 13px;
            gap: 12px;
            flex-wrap: wrap;
        }

        .compare-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 32px;
            height: 100%;
            transition: all var(--transition);
        }

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

        .compare-card .badge {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 100px;
            margin-bottom: 16px;
        }

        .badge-blue {
            background: rgba(30, 64, 175, 0.08);
            color: var(--primary);
        }

        .badge-amber {
            background: rgba(245, 158, 11, 0.12);
            color: #b45309;
        }

        .compare-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

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

        .compare-card ul li {
            padding: 6px 0;
            font-size: 15px;
            color: var(--ink-soft);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .compare-card ul li i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 13px;
        }

        .alert-panel {
            background: linear-gradient(135deg, #fef3c7, #fde68a);
            border-radius: var(--radius);
            padding: 28px 32px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            border: 1px solid rgba(245, 158, 11, 0.3);
        }

        .alert-panel i {
            font-size: 28px;
            color: #b45309;
        }

        .alert-panel h4 {
            font-size: 18px;
            font-weight: 700;
            color: #78350f;
            margin-bottom: 4px;
        }

        .alert-panel p {
            font-size: 14px;
            color: rgba(120, 53, 15, 0.8);
        }

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

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

            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }

            .login-card {
                grid-template-columns: 1fr;
                max-width: 560px;
                margin: 0 auto;
            }

            .login-visual {
                min-height: 280px;
            }

            .hero-area h1 {
                font-size: 40px;
            }

            .banner-section {
                margin-top: 72px;
            }
        }

        @media (max-width: 768px) {
            .container-x {
                padding: 0 20px;
            }

            .nav-links,
            .nav-cta-desktop {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .hero-area {
                padding: 110px 0 70px;
            }

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

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

            .section {
                padding: 70px 0;
            }

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

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

            .card-grid,
            .security-tips {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .process-row {
                padding: 16px;
                gap: 8px;
            }

            .process-step {
                min-width: 140px;
                padding: 16px 10px;
            }

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

            .data-number {
                font-size: 34px;
            }

            .login-form-wrap {
                padding: 32px 24px;
            }

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

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

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

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

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

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

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

            .navbar-inner {
                height: 64px;
            }

            .hero-area {
                margin-top: 64px;
                padding: 90px 0 60px;
            }

            .hero-area h1 {
                font-size: 27px;
            }

            .hero-badge {
                font-size: 13px;
                padding: 5px 12px;
            }

            .card-grid,
            .security-tips {
                grid-template-columns: 1fr;
            }

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

            .feature-card {
                padding: 28px 24px;
            }

            .process-row {
                flex-direction: column;
                align-items: stretch;
                overflow: visible;
            }

            .process-connector {
                transform: rotate(90deg);
                text-align: center;
                padding: 4px 0;
            }

            .process-step {
                min-width: auto;
            }

            .faq-item {
                padding: 20px;
            }

            .faq-question h4 {
                font-size: 15px;
            }

            .login-visual {
                min-height: 200px;
            }

            .alert-panel {
                flex-direction: column;
                gap: 12px;
            }

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

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

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

            .cta-content p {
                font-size: 16px;
            }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-up {
            opacity: 0;
            animation: fadeInUp 0.8s ease forwards;
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #2563eb;
            --color-primary-dark: #1649c4;
            --color-primary-light: #eef6ff;
            --color-accent: #f59e0b;
            --color-bg: #f8fafc;
            --color-white: #ffffff;
            --color-text: #0f172a;
            --color-text-soft: #475569;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-footer-bg: #0b1220;
            --color-footer-text: #94a3b8;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06);
            --shadow-md: 0 8px 30px rgba(15, 23, 42, .08);
            --shadow-lg: 0 20px 50px rgba(15, 23, 42, .12);
            --space-section: 80px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease, opacity .2s ease;
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
        }
        .container-x {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== 导航 ===== */
        .navbar {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .navbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14.5px;
            font-weight: 600;
            color: var(--color-text-soft);
            position: relative;
            transition: all .25s ease;
        }
        .nav-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .nav-link.active {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .nav-cta-desktop {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background .2s;
        }
        .nav-toggle:hover {
            background: #dfeaff;
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 12px 24px 20px;
            background: var(--color-white);
            border-top: 1px solid var(--color-border);
            gap: 4px;
        }
        .mobile-menu a {
            padding: 12px 16px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 15px;
            color: var(--color-text-soft);
            transition: background .2s, color .2s;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 700;
            border-radius: 999px;
            transition: all .25s ease;
            cursor: pointer;
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, .3);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, .35);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(37, 99, 235, .3);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-light {
            background: #fff;
            color: var(--color-primary);
            box-shadow: 0 4px 14px rgba(0, 0, 0, .08);
        }
        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(0, 0, 0, .12);
        }
        .btn:focus-visible {
            outline: 3px solid rgba(37, 99, 235, .4);
            outline-offset: 2px;
        }

        /* ===== 页面横幅 Banner ===== */
        .page-hero {
            position: relative;
            padding: 100px 0 80px;
            background-size: cover;
            background-position: center;
            background-image: linear-gradient(100deg, rgba(15, 23, 42, .88), rgba(30, 58, 138, .72)), url('/assets/images/backpic/back-2.png');
            color: #fff;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(15, 23, 42, .3) 100%);
            pointer-events: none;
        }
        .page-hero-content {
            position: relative;
            z-index: 2;
            max-width: 860px;
        }
        .page-hero .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .15);
            border: 1px solid rgba(255, 255, 255, .25);
            color: #fff;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            backdrop-filter: blur(6px);
            margin-bottom: 20px;
        }
        .page-hero h1 {
            font-size: clamp(30px, 4.5vw, 48px);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }
        .page-hero p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .85);
            max-width: 680px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 24px;
            font-size: 13.5px;
            color: rgba(255, 255, 255, .65);
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, .85);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb i {
            font-size: 10px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--space-section) 0;
        }
        .section-sm {
            padding: 48px 0;
        }
        .section-alt {
            background: var(--color-white);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .section-head {
            margin-bottom: 44px;
        }
        .section-head.center {
            text-align: center;
        }
        .section-title {
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 800;
            letter-spacing: -0.015em;
            line-height: 1.25;
            color: var(--color-text);
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 15.5px;
            color: var(--color-text-soft);
            max-width: 640px;
            line-height: 1.7;
        }
        .section-head.center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }
        .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-primary);
            background: var(--color-primary-light);
            padding: 6px 14px;
            border-radius: 999px;
            letter-spacing: .04em;
            margin-bottom: 14px;
        }

        /* ===== 卡片 ===== */
        .card-grid {
            display: grid;
            gap: 24px;
        }
        .card-grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .card-grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        .card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: #d3e0f5;
        }
        .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--color-primary-light);
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .card:hover .card-img img {
            transform: scale(1.05);
        }
        .card-img .badge-overlay {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(15, 23, 42, .75);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
        }
        .card-body {
            padding: 24px;
        }
        .card-title {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .card-text {
            font-size: 14px;
            color: var(--color-text-soft);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 700;
            color: var(--color-primary);
            transition: gap .2s ease;
        }
        .card-link:hover {
            gap: 10px;
        }

        /* ===== 徽章 / 标签 ===== */
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12.5px;
            font-weight: 600;
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .tag-accent {
            background: #fef3c7;
            color: #b45309;
        }
        .tag-green {
            background: #ecfdf5;
            color: #059669;
        }

        /* ===== 服务权益卡片 ===== */
        .benefit-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: all .3s ease;
            position: relative;
        }
        .benefit-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: #c7d7f2;
        }
        .benefit-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            border-radius: 18px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
        }
        .benefit-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .benefit-card p {
            font-size: 14px;
            color: var(--color-text-soft);
            line-height: 1.65;
        }

        /* ===== 流程步骤 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--color-border);
            position: relative;
            transition: all .3s ease;
        }
        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .process-step::before {
            counter-increment: step;
            content: counter(step, decimal-leading-zero);
            font-size: 34px;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 2px var(--color-primary);
            position: absolute;
            top: 18px;
            right: 22px;
            opacity: .5;
        }
        .process-step .step-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            margin-bottom: 16px;
        }
        .process-step h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 13.5px;
            color: var(--color-text-soft);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 22px 26px;
            transition: border-color .25s, box-shadow .25s;
        }
        .faq-item:hover {
            border-color: #c7d7f2;
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            color: var(--color-text);
        }
        .faq-question i {
            color: var(--color-primary);
            font-size: 14px;
            flex-shrink: 0;
            transition: transform .3s ease;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
            font-size: 14.5px;
            color: var(--color-text-soft);
            line-height: 1.75;
        }
        .faq-answer-inner {
            padding-top: 12px;
        }

        /* ===== 数据统计 ===== */
        .stats-band {
            background: linear-gradient(135deg, #0f172a, #1e3a8a);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            color: #fff;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 20px 12px;
            border-right: 1px solid rgba(255, 255, 255, .1);
        }
        .stat-item:last-child {
            border-right: none;
        }
        .stat-number {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 6px;
            background: linear-gradient(120deg, #fff, #bfdbfe);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, .75);
        }

        /* ===== CTA 区块 ===== */
        .cta-band {
            background: linear-gradient(135deg, #1e40af, #3b82f6);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-band::before {
            content: '';
            position: absolute;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
            top: -100px;
            right: -80px;
        }
        .cta-band h2 {
            font-size: clamp(22px, 3vw, 32px);
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }
        .cta-band p {
            color: rgba(255, 255, 255, .85);
            max-width: 600px;
            margin: 0 auto 28px;
            font-size: 15px;
            line-height: 1.7;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding-top: 64px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }
        .footer-brand .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 19px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .footer-brand .logo i {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 14px;
            color: var(--color-footer-text);
            transition: color .2s, padding-left .2s;
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 6px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 22px 0;
            font-size: 13px;
            color: #64748b;
        }

        /* ===== 焦点可见性 ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(37, 99, 235, .45);
            outline-offset: 2px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root {
                --space-section: 60px;
            }
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-band {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, .08);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-cta-desktop {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-menu {
                display: flex;
            }
            .page-hero {
                padding: 70px 0 56px;
            }
            .card-grid-3,
            .card-grid-2 {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .stats-band {
                grid-template-columns: 1fr;
                padding: 32px 24px;
            }
            .cta-band {
                padding: 40px 24px;
            }
            .cta-band .btn {
                width: 100%;
                max-width: 320px;
            }
        }
        @media (max-width: 520px) {
            .container-x {
                padding-left: 16px;
                padding-right: 16px;
            }
            .card-grid-4 {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-title {
                font-size: 24px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
        }
        @media (min-width: 769px) {
            .mobile-menu {
                display: none !important;
            }
        }