/* roulang page: index */
:root {
            --primary: #0B192C;
            --primary-light: #11263E;
            --accent: #00C2B3;
            --accent-dark: #009E94;
            --bg-body: #F6F8FB;
            --bg-white: #FFFFFF;
            --bg-soft: #F1F5F9;
            --text-primary: #0F172A;
            --text-secondary: #475569;
            --text-muted: #94A3B8;
            --border: #E2E8F0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 16px 40px rgba(15, 23, 42, 0.12);
            --shadow-accent: 0 10px 30px rgba(0, 194, 179, 0.25);
            --transition: all .3s cubic-bezier(.4, 0, .2, 1);
        }
        * {
            box-sizing: border-box;
            padding: 0;
            margin: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }
        .container-x {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
        }
        .desktop-nav-wrapper {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
            height: 74px;
            gap: 1rem;
        }
        .nav-group {
            display: flex;
            align-items: center;
            gap: 2px;
        }
        .nav-group-left {
            justify-content: flex-start;
        }
        .nav-group-right {
            justify-content: flex-end;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--bg-soft);
        }
        .nav-link.active {
            color: var(--accent-dark);
            background: rgba(0, 194, 179, 0.1);
            font-weight: 600;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: var(--primary);
            line-height: 1.2;
            white-space: nowrap;
        }
        .brand-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent), var(--primary));
            color: #fff;
            font-size: 15px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .mobile-topbar {
            display: none;
            align-items: center;
            justify-content: space-between;
            height: 62px;
        }
        .menu-trigger {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-soft);
            color: var(--primary);
            font-size: 18px;
            transition: var(--transition);
        }
        .menu-trigger:hover {
            background: rgba(0, 194, 179, 0.12);
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 12px 1.25rem 20px;
            background: #ffffff;
            border-top: 1px solid var(--border);
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav .nav-link {
            padding: 12px 14px;
            font-size: 16px;
            border-radius: 12px;
            display: flex;
            justify-content: space-between;
        }
        .hero {
            position: relative;
            background: linear-gradient(135deg, #0B192C 0%, #132C44 55%, #0F3B3A 100%), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            background-blend-mode: overlay;
            color: #fff;
            padding: 120px 0 140px;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 25, 44, 0.2) 0%, rgba(11, 25, 44, 0.55) 100%);
            pointer-events: none;
        }
        .hero .hero-inner {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.4px;
            backdrop-filter: blur(6px);
        }
        .hero-title {
            font-size: clamp(2.4rem, 5.2vw, 4rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: 0.02em;
            margin: 22px 0 18px;
        }
        .hero-title span {
            color: var(--accent);
        }
        .hero-subtitle {
            font-size: clamp(1rem, 1.6vw, 1.2rem);
            color: rgba(255, 255, 255, 0.86);
            max-width: 640px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: var(--transition);
            cursor: pointer;
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: var(--shadow-accent);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-3px);
            box-shadow: 0 16px 36px rgba(0, 194, 179, 0.32);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.55);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-3px);
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.18);
        }
        .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 32px rgba(255, 255, 255, 0.26);
        }
        .btn-accent-outline {
            background: transparent;
            color: var(--accent-dark);
            border-color: var(--accent);
        }
        .btn-accent-outline:hover {
            background: rgba(0, 194, 179, 0.1);
            transform: translateY(-3px);
        }
        .hero-features {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            margin-top: 38px;
            color: rgba(255, 255, 255, 0.78);
            font-size: 14px;
        }
        .hero-features span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }
        .hero-features i {
            color: var(--accent);
        }
        .stat-strip {
            margin-top: -56px;
            position: relative;
            z-index: 10;
        }
        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            padding: 26px 22px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
        }
        .section {
            padding: 96px 0;
        }
        .section-sm {
            padding: 64px 0;
        }
        .section-head {
            margin-bottom: 48px;
        }
        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 700;
            color: var(--accent-dark);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: clamp(1.8rem, 3.4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }
        .section-sub {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-top: 12px;
            max-width: 640px;
            line-height: 1.7;
        }
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .about-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
        }
        .about-image img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .about-image:hover img {
            transform: scale(1.04);
        }
        .about-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(11, 25, 44, 0.35));
        }
        .about-content .feature-list {
            margin-top: 22px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .about-content .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 14px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .about-content .feature-list li:hover {
            border-color: rgba(0, 194, 179, 0.35);
            box-shadow: var(--shadow);
        }
        .about-content .feature-list li i {
            margin-top: 3px;
            color: var(--accent-dark);
            font-size: 16px;
            width: 22px;
            text-align: center;
        }
        .category-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 194, 179, 0.3);
        }
        .category-image {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .category-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .category-card:hover .category-image img {
            transform: scale(1.06);
        }
        .category-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(11, 25, 44, 0.25));
        }
        .category-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .category-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .category-body p {
            font-size: 14px;
            color: var(--text-secondary);
            flex: 1;
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 14px;
            color: var(--accent-dark);
        }
        .category-link:hover {
            gap: 10px;
            color: var(--primary);
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-list .empty-tip {
            background: var(--bg-white);
            border: 1px dashed var(--border);
            border-radius: var(--radius-md);
            padding: 40px 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 15px;
        }
        .news-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 20px;
            transition: var(--transition);
        }
        .news-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
            border-color: rgba(0, 194, 179, 0.3);
        }
        .news-thumb {
            width: 110px;
            height: 84px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-soft);
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-item:hover .news-thumb img {
            transform: scale(1.06);
        }
        .news-info {
            flex: 1;
            min-width: 0;
        }
        .news-info h3 {
            font-size: 1.05rem;
            font-weight: 650;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .news-info p {
            font-size: 14px;
            color: var(--text-secondary);
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            line-height: 1.6;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-top: 10px;
            flex-wrap: wrap;
        }
        .news-meta .tag {
            background: rgba(0, 194, 179, 0.1);
            color: var(--accent-dark);
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
        }
        .news-meta time {
            font-size: 13px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), transparent);
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: rgba(0, 194, 179, 0.1);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-dark);
            font-size: 20px;
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 32px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent) 0%, rgba(0, 194, 179, 0.2) 100%);
            z-index: 0;
        }
        .step-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px 18px;
            text-align: center;
            position: relative;
            z-index: 2;
            transition: var(--transition);
        }
        .step-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .step-num {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            box-shadow: 0 0 0 5px rgba(0, 194, 179, 0.12);
        }
        .step-card h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item[open] {
            border-color: rgba(0, 194, 179, 0.35);
            box-shadow: var(--shadow);
        }
        .faq-item summary {
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-primary);
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--accent-dark);
        }
        .faq-item summary i {
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .faq-item[open] summary i {
            transform: rotate(45deg);
            color: var(--accent-dark);
        }
        .faq-content {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .cta-box {
            position: relative;
            background: linear-gradient(135deg, #0B192C 0%, #14304A 60%, #0F3B3A 100%), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            background-blend-mode: overlay;
            border-radius: 28px;
            padding: 72px 48px;
            overflow: hidden;
            text-align: center;
            color: #fff;
        }
        .cta-box::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at top right, rgba(0, 194, 179, 0.18), transparent 60%);
            pointer-events: none;
        }
        .cta-box .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-box h2 {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-box p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.82);
            max-width: 560px;
            margin: 0 auto 30px;
        }
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 0;
            margin-top: 40px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-brand .brand-logo {
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-desc {
            font-size: 14px;
            margin-top: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 340px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
            list-style: none;
        }
        .footer-links li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .footer-links li a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }
        .footer-links li a i {
            font-size: 12px;
            color: var(--accent);
            opacity: 0.6;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 22px 0 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-tech {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        @media (max-width: 1023px) {
            .desktop-nav-wrapper {
                display: none;
            }
            .mobile-topbar {
                display: flex;
            }
            .hero {
                padding: 90px 0 140px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .section {
                padding: 72px 0;
            }
            .about-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .about-image img {
                height: 320px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid::before {
                display: none;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 36px;
            }
        }
        @media (max-width: 768px) {
            .container-x {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .stat-strip {
                margin-top: -36px;
            }
            .stat-card {
                padding: 18px 12px;
            }
            .stat-num {
                font-size: 1.5rem;
            }
            .hero {
                padding: 80px 0 120px;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-actions .btn {
                padding: 11px 20px;
                font-size: 14px;
            }
            .section {
                padding: 56px 0;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .category-image {
                height: 170px;
            }
            .news-item {
                flex-direction: row;
                padding: 14px;
                gap: 16px;
            }
            .news-thumb {
                width: 90px;
                height: 76px;
            }
            .news-info h3 {
                font-size: 15px;
                white-space: normal;
                display: -webkit-box;
                -webkit-line-clamp: 2;
                -webkit-box-orient: vertical;
            }
            .news-info p {
                display: none;
            }
            .cta-box {
                padding: 48px 24px;
                border-radius: 20px;
            }
            .footer-top {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .hero {
                padding: 70px 0 110px;
            }
            .hero-badge {
                font-size: 12px;
                padding: 5px 12px;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .stat-strip .grid {
                grid-template-columns: repeat(2, 1fr) !important;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .about-content .feature-list li {
                padding: 12px 14px;
                font-size: 14px;
            }
            .category-card {
                margin-bottom: 8px;
            }
            .news-item {
                padding: 12px;
                gap: 12px;
            }
            .news-thumb {
                width: 74px;
                height: 68px;
            }
            .news-meta .tag {
                font-size: 11px;
                padding: 2px 10px;
            }
        }

/* roulang page: article */
:root {
    --primary: #1d4ed8;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;
    --accent: #f59e0b;
    --accent-soft: #fef3c7;
    --bg-body: #f1f5f9;
    --bg-surface: #ffffff;
    --bg-soft: #f8fafc;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --text-soft: #94a3b8;
    --border: #e2e8f0;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, .08);
    --shadow-md: 0 6px 20px rgba(15, 23, 42, .08);
    --shadow-lg: 0 16px 40px rgba(15, 23, 42, .12);
    --transition: .25s cubic-bezier(.4, 0, .2, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; background: var(--bg-body); color: var(--text-main); line-height: 1.6; font-size: 16px; }
img { max-width: 100%; height: auto; vertical-align: middle; }
a { color: inherit; text-decoration: none; }
button { border: none; background: none; cursor: pointer; font: inherit; }
ul, ol { list-style: none; }
.container-x { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, .92); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border-bottom: 1px solid rgba(226, 232, 240, .8); box-shadow: 0 2px 10px rgba(15, 23, 42, .04); }
.desktop-nav-wrapper { display: flex; align-items: center; justify-content: space-between; height: 76px; gap: 20px; }
.nav-group { display: flex; align-items: center; gap: 6px; }
.nav-group-left { flex: 1; justify-content: flex-end; }
.nav-group-right { flex: 1; justify-content: flex-start; }
.nav-link { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 999px; font-size: 15px; font-weight: 500; color: var(--text-muted); transition: all var(--transition); white-space: nowrap; }
.nav-link:hover { color: var(--primary); background: rgba(29, 78, 216, .06); }
.nav-link.active { color: var(--primary); background: rgba(29, 78, 216, .08); font-weight: 600; }
.brand-logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--text-main); white-space: nowrap; transition: opacity var(--transition); }
.brand-logo:hover { opacity: .85; }
.brand-badge { display: inline-flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; border-radius: 10px; font-size: 13px; font-weight: 700; padding: 4px 10px; letter-spacing: .5px; box-shadow: 0 4px 12px rgba(29, 78, 216, .25); }
.mobile-topbar { display: none; align-items: center; justify-content: space-between; height: 64px; }
.menu-trigger { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; border-radius: 10px; background: var(--bg-soft); color: var(--text-main); font-size: 18px; transition: background var(--transition); }
.menu-trigger:hover { background: #e2e8f0; }
.mobile-nav { display: none; background: #fff; border-top: 1px solid var(--border); padding: 8px 0 14px; box-shadow: 0 10px 30px rgba(15, 23, 42, .08); }
.mobile-nav .nav-link { display: flex; align-items: center; justify-content: space-between; padding: 13px 24px; border-radius: 0; font-size: 16px; border-bottom: 1px solid #f1f5f9; white-space: normal; }
.mobile-nav .nav-link:last-child { border-bottom: none; }
.mobile-nav .nav-link i { color: var(--text-soft); }
.mobile-nav.open { display: block; }
.site-footer { background: #0f172a; color: #94a3b8; padding: 56px 0 28px; margin-top: 24px; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(148, 163, 184, .15); }
.footer-brand .brand-logo { color: #fff; }
.footer-brand .brand-badge { background: linear-gradient(135deg, var(--primary-light), var(--primary)); }
.footer-desc { margin-top: 16px; font-size: 14px; line-height: 1.8; color: #94a3b8; max-width: 420px; }
.footer-col h4 { color: #f1f5f9; font-size: 15px; font-weight: 600; margin-bottom: 16px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: #94a3b8; transition: color var(--transition); }
.footer-links a:hover { color: var(--accent); }
.footer-links a i { font-size: 12px; color: #64748b; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; padding-top: 24px; font-size: 13px; color: #64748b; }
.footer-tech { display: inline-flex; align-items: center; gap: 6px; }
.footer-tech i { color: var(--accent); }
.btn-primary { display: inline-flex; align-items: center; gap: 8px; background: var(--primary); color: #fff; font-weight: 600; font-size: 15px; padding: 12px 28px; border-radius: 999px; transition: all var(--transition); box-shadow: 0 4px 14px rgba(29, 78, 216, .25); border: 2px solid transparent; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(29, 78, 216, .3); }
.btn-primary:focus-visible { outline: 3px solid rgba(29, 78, 216, .4); outline-offset: 2px; }
.btn-outline { display: inline-flex; align-items: center; gap: 8px; background: transparent; color: var(--primary); font-weight: 600; font-size: 15px; padding: 12px 28px; border-radius: 999px; border: 2px solid var(--primary); transition: all var(--transition); }
.btn-outline:hover { background: rgba(29, 78, 216, .06); transform: translateY(-2px); }
.btn-outline:focus-visible { outline: 3px solid rgba(29, 78, 216, .4); outline-offset: 2px; }
.btn-light { display: inline-flex; align-items: center; gap: 8px; background: var(--accent); color: #0f172a; font-weight: 700; font-size: 15px; padding: 12px 28px; border-radius: 999px; transition: all var(--transition); box-shadow: 0 4px 16px rgba(245, 158, 11, .3); }
.btn-light:hover { background: #d97706; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245, 158, 11, .35); }
.article-hero { position: relative; padding: 64px 0 56px; background: linear-gradient(135deg, rgba(15, 23, 42, .96), rgba(30, 58, 138, .88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat; color: #fff; }
.article-hero .breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; font-size: 14px; color: #cbd5e1; margin-bottom: 24px; }
.article-hero .breadcrumb a { display: inline-flex; align-items: center; gap: 6px; color: #cbd5e1; transition: color var(--transition); }
.article-hero .breadcrumb a:hover { color: var(--accent); }
.article-hero .breadcrumb .sep { color: #64748b; font-size: 12px; }
.article-hero .breadcrumb .current { color: #f1f5f9; font-weight: 500; }
.article-title { font-size: clamp(1.75rem, 4vw, 2.6rem); font-weight: 700; line-height: 1.35; max-width: 900px; margin: 8px 0 16px; letter-spacing: .01em; word-break: break-word; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; font-size: 14px; color: #cbd5e1; }
.article-meta .meta-badge { display: inline-flex; align-items: center; gap: 6px; background: rgba(245, 158, 11, .18); color: var(--accent); font-weight: 600; padding: 5px 14px; border-radius: 999px; border: 1px solid rgba(245, 158, 11, .3); }
.article-meta .meta-date { display: inline-flex; align-items: center; gap: 6px; }
.article-meta .meta-date i { color: #94a3b8; }
.article-body-section { padding: 56px 0 20px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 48px; align-items: start; }
.article-main { min-width: 0; }
.article-cover { width: 100%; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); margin-bottom: 32px; display: block; object-fit: cover; }
.article-content { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px 44px; box-shadow: var(--shadow-sm); }
.article-content h2 { font-size: 1.55rem; font-weight: 700; margin: 2.2rem 0 1rem; padding-top: .4rem; color: var(--text-main); }
.article-content h3 { font-size: 1.25rem; font-weight: 600; margin: 1.6rem 0 .75rem; color: var(--text-main); }
.article-content p { margin: 1.1rem 0; line-height: 1.9; color: #334155; }
.article-content ul, .article-content ol { margin: 1.1rem 0; padding-left: 1.6rem; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin: .45rem 0; line-height: 1.8; color: #334155; }
.article-content blockquote { border-left: 4px solid var(--primary); background: var(--bg-soft); padding: .9rem 1.4rem; margin: 1.4rem 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: #475569; }
.article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; transition: opacity var(--transition); }
.article-content a:hover { opacity: .75; }
.article-content img { border-radius: var(--radius-md); margin: 1.5rem 0; max-width: 100%; }
.article-content pre { background: #0f172a; color: #e2e8f0; padding: 1.1rem 1.4rem; border-radius: var(--radius-md); overflow-x: auto; margin: 1.4rem 0; font-size: 14px; }
.article-content code { background: #f1f5f9; color: #be185d; padding: .15rem .5rem; border-radius: 6px; font-size: .875em; }
.article-content table { width: 100%; border-collapse: collapse; margin: 1.4rem 0; font-size: 14px; }
.article-content th, .article-content td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; }
.article-content th { background: var(--bg-soft); font-weight: 600; }
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.article-tags .tag-chip { display: inline-flex; align-items: center; gap: 5px; background: var(--bg-soft); border: 1px solid var(--border); color: var(--text-muted); font-size: 13px; padding: 5px 14px; border-radius: 999px; transition: all var(--transition); }
.article-tags .tag-chip:hover { border-color: var(--primary); color: var(--primary); background: rgba(29, 78, 216, .04); }
.article-empty { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 48px; text-align: center; }
.article-empty p { color: var(--text-muted); font-size: 16px; margin-bottom: 20px; }
.article-sidebar { display: flex; flex-direction: column; gap: 24px; position: sticky; top: 100px; }
.sidebar-card { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px; box-shadow: var(--shadow-sm); }
.sidebar-title { display: flex; align-items: center; gap: 10px; font-size: 16px; font-weight: 700; color: var(--text-main); margin-bottom: 16px; }
.sidebar-title i { color: var(--primary); font-size: 18px; width: 22px; text-align: center; }
.sidebar-links { display: flex; flex-direction: column; gap: 2px; }
.sidebar-link { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 10px; font-size: 14px; color: var(--text-muted); transition: all var(--transition); }
.sidebar-link:hover { background: var(--bg-soft); color: var(--primary); padding-left: 16px; }
.sidebar-link i { font-size: 12px; color: var(--text-soft); transition: color var(--transition); }
.sidebar-link:hover i { color: var(--primary); }
.sidebar-cat { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border: 1px solid var(--border); border-radius: 12px; margin-bottom: 10px; transition: all var(--transition); }
.sidebar-cat:last-child { margin-bottom: 0; }
.sidebar-cat:hover { border-color: var(--primary); background: rgba(29, 78, 216, .03); transform: translateY(-2px); }
.sidebar-cat-icon { width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0; }
.sidebar-cat-icon.c1 { background: rgba(29, 78, 216, .1); color: var(--primary); }
.sidebar-cat-icon.c2 { background: rgba(245, 158, 11, .12); color: #d97706; }
.sidebar-cat-icon.c3 { background: rgba(16, 185, 129, .1); color: #059669; }
.sidebar-cat-name { font-size: 14px; font-weight: 600; color: var(--text-main); }
.sidebar-cat-desc { font-size: 12px; color: var(--text-soft); line-height: 1.4; margin-top: 2px; }
.notfound-section { display: flex; align-items: center; justify-content: center; min-height: 60vh; padding: 60px 24px; }
.notfound-card { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 56px 48px; text-align: center; max-width: 520px; width: 100%; box-shadow: var(--shadow-lg); }
.notfound-icon { width: 84px; height: 84px; margin: 0 auto 24px; border-radius: 50%; background: rgba(239, 68, 68, .08); display: flex; align-items: center; justify-content: center; font-size: 34px; color: #ef4444; }
.notfound-title { font-size: 1.4rem; font-weight: 700; margin-bottom: 12px; }
.notfound-text { color: var(--text-muted); margin-bottom: 28px; }
.category-section { padding: 56px 0 20px; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 44px; }
.section-label { display: inline-block; background: rgba(29, 78, 216, .08); color: var(--primary); font-size: 13px; font-weight: 600; padding: 6px 18px; border-radius: 999px; margin-bottom: 14px; letter-spacing: .5px; }
.section-title { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; line-height: 1.3; margin-bottom: 12px; }
.section-subtitle { color: var(--text-muted); font-size: 15px; line-height: 1.8; }
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.category-card { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; transition: all var(--transition); display: block; }
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(29, 78, 216, .25); }
.category-card .cat-icon { width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: 18px; }
.category-card .cat-icon.c1 { background: rgba(29, 78, 216, .1); color: var(--primary); }
.category-card .cat-icon.c2 { background: rgba(245, 158, 11, .12); color: #d97706; }
.category-card .cat-icon.c3 { background: rgba(16, 185, 129, .1); color: #059669; }
.category-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.category-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.category-card .cat-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--primary); transition: gap var(--transition); }
.category-card:hover .cat-link { gap: 10px; }
.category-card .cat-link i { font-size: 12px; }
.faq-section { padding: 56px 0 20px; }
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.faq-item { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 22px 24px; transition: all var(--transition); }
.faq-item:hover { box-shadow: var(--shadow-md); border-color: rgba(29, 78, 216, .2); }
.faq-item h3 { display: flex; align-items: flex-start; gap: 12px; font-size: 15px; font-weight: 600; line-height: 1.5; margin-bottom: 8px; color: var(--text-main); }
.faq-item h3 i { color: var(--accent); font-size: 14px; margin-top: 4px; flex-shrink: 0; }
.faq-item p { font-size: 14px; color: var(--text-muted); line-height: 1.75; padding-left: 26px; }
.cta-section { padding: 56px 0 28px; }
.cta-card { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); border-radius: var(--radius-lg); padding: 48px 56px; text-align: center; color: #fff; box-shadow: 0 16px 50px rgba(29, 78, 216, .3); position: relative; overflow: hidden; }
.cta-card::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center/cover no-repeat; opacity: .1; }
.cta-card > * { position: relative; }
.cta-title { font-size: 1.6rem; font-weight: 700; margin-bottom: 12px; }
.cta-text { font-size: 15px; color: rgba(255, 255, 255, .85); margin-bottom: 28px; max-width: 620px; margin-left: auto; margin-right: auto; line-height: 1.8; }
.cta-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
@media (min-width: 1025px) {
    .nav-group-left { padding-right: 8px; }
    .nav-group-right { padding-left: 8px; }
}
@media (max-width: 1024px) {
    .desktop-nav-wrapper { display: none; }
    .mobile-topbar { display: flex; }
    .mobile-nav { display: none; }
    .mobile-nav.open { display: block; }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
}
@media (max-width: 768px) {
    .container-x { padding: 0 18px; }
    .footer-top { grid-template-columns: 1fr; gap: 32px; }
    .article-content { padding: 28px 22px; }
    .article-hero { padding: 44px 0 40px; }
    .category-grid { grid-template-columns: 1fr; gap: 16px; }
    .faq-grid { grid-template-columns: 1fr; }
    .cta-card { padding: 40px 24px; }
    .notfound-card { padding: 40px 24px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
    .container-x { padding: 0 14px; }
    .article-meta { gap: 10px; }
    .article-title { font-size: 1.45rem; }
    .article-cover { border-radius: var(--radius-md); }
    .article-content { padding: 22px 18px; }
    .article-tags { gap: 8px; }
    .cta-title { font-size: 1.25rem; }
    .btn-primary, .btn-outline, .btn-light { width: 100%; justify-content: center; }
    .footer-bottom span { width: 100%; }
}

/* roulang page: category1 */
:root {
            --primary: #3554D1;
            --primary-dark: #2A43B5;
            --primary-soft: #EDF1FF;
            --accent: #F59E0B;
            --ink: #18213C;
            --muted: #5E6A85;
            --bg: #F5F7FC;
            --surface: #FFFFFF;
            --border: #E4E9F2;
            --radius: 18px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(24, 33, 60, 0.05);
            --shadow-md: 0 12px 34px rgba(24, 33, 60, 0.08);
            --shadow-lg: 0 24px 60px rgba(24, 33, 60, 0.12);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--ink);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font: inherit;
            cursor: pointer;
        }
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 3px solid rgba(53, 84, 209, 0.35);
            outline-offset: 2px;
            border-radius: 8px;
        }
        .container-x {
            width: min(1200px, 92%);
            margin: 0 auto;
        }
        .section-space {
            padding: 88px 0;
        }

        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
        }
        .desktop-nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 16px;
        }
        .nav-group {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-group-left {
            flex: 1;
            justify-content: flex-start;
        }
        .nav-group-right {
            flex: 1;
            justify-content: flex-end;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: 999px;
            font-size: 14.5px;
            font-weight: 500;
            color: var(--muted);
            transition: all 0.2s;
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .nav-link.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .brand-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #6D8BFF);
            color: #fff;
            font-size: 14px;
            font-weight: 800;
            box-shadow: 0 8px 20px rgba(53, 84, 209, 0.25);
        }
        .mobile-topbar {
            display: none;
        }
        .menu-trigger {
            display: none;
        }
        .mobile-nav {
            display: none;
        }

        /* 分类页 Hero */
        .category-hero {
            color: #fff;
        }
        .crumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.72);
            margin-bottom: 22px;
        }
        .crumb a:hover {
            color: #fff;
        }
        .crumb-sep {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.4);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.22);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: clamp(32px, 5vw, 52px);
            line-height: 1.18;
            font-weight: 800;
            margin: 18px 0 18px;
            letter-spacing: -0.02em;
        }
        .hero-sub {
            font-size: 17px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.82);
            max-width: 640px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 26px;
        }
        .hero-meta-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 52px;
        }
        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 20px;
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.16);
            backdrop-filter: blur(6px);
        }
        .hero-meta-item i {
            font-size: 22px;
            color: #FFD27A;
            width: 32px;
            text-align: center;
            flex: none;
        }
        .hero-meta-item strong {
            display: block;
            font-size: 15px;
            font-weight: 700;
        }
        .hero-meta-item span {
            font-size: 12.5px;
            color: rgba(255, 255, 255, 0.72);
        }

        /* 按钮 */
        .btn-primary,
        .btn-outline,
        .btn-outline-white,
        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 26px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.22s;
            border: 1px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 10px 26px rgba(53, 84, 209, 0.28);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 14px 34px rgba(53, 84, 209, 0.35);
        }
        .btn-outline {
            border-color: var(--border);
            background: #fff;
            color: var(--ink);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
            transform: translateY(-2px);
        }
        .btn-outline-white {
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.15);
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.2);
        }

        /* 板块标题 */
        .section-head {
            max-width: 680px;
            margin: 0 auto 44px;
            text-align: center;
        }
        .section-head.between {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            max-width: none;
            text-align: left;
            gap: 20px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.02em;
        }
        .section-title {
            font-size: clamp(26px, 3.2vw, 38px);
            font-weight: 800;
            line-height: 1.25;
            margin-top: 14px;
            letter-spacing: -0.01em;
        }
        .section-title.left-title {
            margin-top: 14px;
        }
        .section-desc {
            margin-top: 12px;
            font-size: 15.5px;
            color: var(--muted);
            line-height: 1.7;
        }

        /* 指南卡片 */
        .guide-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform 0.25s, box-shadow 0.25s;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .guide-card-media {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .guide-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s;
        }
        .guide-card:hover .guide-card-media img {
            transform: scale(1.05);
        }
        .guide-card-icon {
            position: absolute;
            right: 16px;
            bottom: -26px;
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: 0 10px 24px rgba(53, 84, 209, 0.3);
        }
        .guide-card-body {
            padding: 34px 24px 24px;
        }
        .guide-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .guide-card-body p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.65;
        }
        .guide-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: #F1F4FA;
            color: var(--muted);
        }
        .guide-card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 18px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .guide-card-link i {
            transition: transform 0.2s;
        }
        .guide-card-link:hover i {
            transform: translateX(4px);
        }

        /* 图文区块 */
        .split-media {
            position: relative;
        }
        .split-media img {
            border-radius: 24px;
            box-shadow: var(--shadow-lg);
        }
        .media-float-card {
            position: absolute;
            bottom: 22px;
            left: -14px;
            padding: 12px 18px;
            background: #fff;
            border-radius: 14px;
            box-shadow: var(--shadow-md);
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            border: 1px solid var(--border);
        }
        .step-list {
            margin-top: 26px;
            display: flex;
            flex-direction: column;
            gap: 20px;
            list-style: none;
        }
        .step-item {
            display: flex;
            gap: 16px;
        }
        .step-dot {
            flex: none;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 18px rgba(53, 84, 209, 0.25);
        }
        .step-item h4 {
            font-size: 15.5px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.6;
        }
        .notice-box {
            display: flex;
            gap: 12px;
            margin-top: 28px;
            padding: 14px 18px;
            border-radius: 14px;
            background: #FFFBEB;
            border: 1px solid #FDE68A;
            color: #92400E;
            font-size: 13.5px;
            line-height: 1.6;
        }
        .notice-box i {
            font-size: 16px;
            color: #F59E0B;
            flex: none;
            margin-top: 1px;
        }

        /* 问题排查 */
        .trouble-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 900px;
            margin: 0 auto;
        }
        .trouble-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 20px 22px;
            border-radius: 18px;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.2s;
        }
        .trouble-item:hover {
            box-shadow: var(--shadow-md);
        }
        .trouble-icon {
            flex: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: #FEF2F2;
            color: #EF4444;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }
        .trouble-content h4 {
            font-size: 15.5px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .trouble-content p {
            font-size: 13.5px;
            line-height: 1.6;
            color: var(--muted);
        }
        .trouble-content .trouble-cause {
            margin-top: 6px;
        }
        .trouble-solve {
            color: var(--ink);
        }
        .trouble-badge {
            flex: none;
            align-self: flex-start;
            padding: 4px 12px;
            border-radius: 999px;
            background: #F1F4FA;
            color: var(--muted);
            font-size: 12px;
            font-weight: 600;
        }

        /* 内容卡片 */
        .content-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform 0.25s, box-shadow 0.25s;
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .content-card img {
            aspect-ratio: 16 / 10;
            object-fit: cover;
            width: 100%;
        }
        .cc-body {
            padding: 22px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .cc-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 12px;
        }
        .cc-date {
            font-size: 12.5px;
            color: var(--muted);
        }
        .cc-body h3 {
            font-size: 16.5px;
            line-height: 1.45;
            font-weight: 700;
            margin-bottom: 8px;
            transition: color 0.2s;
        }
        .content-card:hover h3 {
            color: var(--primary);
        }
        .cc-body p {
            font-size: 13.5px;
            color: var(--muted);
            line-height: 1.65;
        }

        /* FAQ */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.2s;
        }
        .faq-item[open] {
            box-shadow: var(--shadow-md);
            border-color: #C7D2FE;
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary i {
            transition: transform 0.25s;
            color: var(--primary);
            flex: none;
        }
        .faq-item[open] summary i {
            transform: rotate(180deg);
        }
        .faq-item p {
            padding: 0 22px 20px;
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            padding: 60px 0 90px;
        }
        .cta-box {
            position: relative;
            overflow: hidden;
            border-radius: 28px;
            padding: 60px 40px;
            text-align: center;
            color: #fff;
            background: linear-gradient(135deg, #18213C 0%, #2943B0 60%, #3554D1 100%);
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.28;
        }
        .cta-box h2 {
            position: relative;
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-box p {
            position: relative;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 24px;
            font-size: 15.5px;
        }
        .cta-actions {
            position: relative;
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: #121A2F;
            color: #A5AFC8;
            padding: 60px 0 28px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .brand-logo {
            color: #fff;
        }
        .footer-brand .brand-badge {
            background: linear-gradient(135deg, #3554D1, #6D8BFF);
        }
        .footer-desc {
            margin-top: 16px;
            font-size: 14px;
            line-height: 1.7;
            max-width: 360px;
            color: #8E99B4;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: #8E99B4;
            font-size: 14px;
            transition: color 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 2px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding-top: 26px;
            font-size: 13px;
            color: #66708A;
            flex-wrap: wrap;
        }

        /* 响应式 */
        @media (max-width: 1023px) {
            .desktop-nav-wrapper {
                display: none;
            }
            .mobile-topbar {
                display: flex;
                align-items: center;
                justify-content: space-between;
                height: 68px;
            }
            .menu-trigger {
                display: inline-flex;
                width: 42px;
                height: 42px;
                align-items: center;
                justify-content: center;
                border-radius: 12px;
                border: 1px solid var(--border);
                background: #fff;
                color: var(--ink);
                font-size: 18px;
            }
            .mobile-nav {
                flex-direction: column;
                background: #fff;
                border-radius: 16px;
                margin: 8px 4px 16px;
                padding: 10px;
                box-shadow: var(--shadow-md);
                border: 1px solid var(--border);
            }
            .mobile-nav.open {
                display: flex;
            }
            .mobile-nav .nav-link {
                display: flex;
                justify-content: space-between;
                padding: 12px 14px;
                border-radius: 12px;
                color: var(--ink);
            }
            .mobile-nav .nav-link:hover {
                background: var(--primary-soft);
            }
            .mobile-nav .nav-link.active {
                background: var(--primary-soft);
                color: var(--primary);
                font-weight: 600;
            }
            .section-space {
                padding: 64px 0;
            }
            .hero-meta-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .section-head.between {
                flex-direction: column;
                align-items: flex-start;
            }
            .media-float-card {
                left: 12px;
            }
        }
        @media (max-width: 767px) {
            .section-space {
                padding: 52px 0;
            }
            .hero-title {
                font-size: 30px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline-white {
                width: 100%;
            }
            .hero-meta-grid {
                grid-template-columns: 1fr;
                gap: 10px;
                margin-top: 34px;
            }
            .hero-meta-item {
                padding: 14px 16px;
            }
            .cta-box {
                padding: 40px 22px;
                border-radius: 20px;
            }
            .cta-actions .btn-white,
            .cta-actions .btn-outline-white {
                width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #4f46e5;
            --primary-dark: #4338ca;
            --primary-light: #818cf8;
            --accent: #f59e0b;
            --bg: #f8fafc;
            --bg-white: #ffffff;
            --bg-deep: #0f172a;
            --text: #0f172a;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 42, .05);
            --shadow-md: 0 6px 24px rgba(15, 23, 42, .08);
            --shadow-lg: 0 14px 40px rgba(79, 70, 229, .12);
            --transition: .25s ease;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font: inherit;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== 公用容器 ===== */
        .container-x {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 头部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(15, 23, 42, .04);
        }
        .desktop-nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }
        .nav-group {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-group-left {
            flex: 1;
            justify-content: flex-end;
            gap: 8px;
            padding-right: 28px;
        }
        .nav-group-right {
            flex: 1;
            gap: 8px;
            padding-left: 28px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: all var(--transition);
        }
        .nav-link i {
            opacity: .75;
            font-size: 12px;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(79, 70, 229, .06);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(79, 70, 229, .1);
            font-weight: 600;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 18px;
            color: var(--text);
            letter-spacing: .3px;
            white-space: nowrap;
        }
        .brand-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 42px;
            height: 42px;
            padding: 0 10px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 14px;
            font-weight: 800;
            letter-spacing: 1px;
            box-shadow: 0 4px 14px rgba(79, 70, 229, .3);
        }
        .mobile-topbar {
            display: none;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }
        .menu-trigger {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: rgba(79, 70, 229, .08);
            color: var(--primary);
            font-size: 18px;
            transition: background var(--transition);
        }
        .menu-trigger:hover {
            background: rgba(79, 70, 229, .14);
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            padding: 16px 24px 24px;
            background: #fff;
            border-top: 1px solid var(--border);
            gap: 4px;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav .nav-link {
            padding: 14px 12px;
            border-radius: var(--radius-sm);
            justify-content: space-between;
            font-size: 15px;
            border-bottom: 1px solid #f1f5f9;
        }
        .mobile-nav .nav-link:last-child {
            border-bottom: none;
        }
        .mobile-nav .nav-link.active {
            background: rgba(79, 70, 229, .08);
        }

        /* ===== Hero 横幅 ===== */
        .category-hero {
            position: relative;
            overflow: hidden;
            background: var(--bg-deep);
        }
        .category-hero-bg {
            position: relative;
            min-height: 340px;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
        }
        .category-hero-bg::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(15, 23, 42, .88) 0%, rgba(15, 23, 42, .65) 45%, rgba(15, 23, 42, .35) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 0;
            max-width: 680px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .25);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 8px 18px;
            border-radius: 999px;
            margin-bottom: 22px;
            backdrop-filter: blur(6px);
        }
        .hero-badge i {
            color: var(--accent);
        }
        .hero-content h1 {
            color: #fff;
            font-size: clamp(30px, 5vw, 46px);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: .5px;
        }
        .hero-content h1 span {
            color: var(--primary-light);
        }
        .hero-content p {
            color: rgba(255, 255, 255, .85);
            font-size: 16px;
            line-height: 1.8;
            max-width: 520px;
        }
        .hero-meta {
            display: flex;
            gap: 24px;
            margin-top: 28px;
            flex-wrap: wrap;
        }
        .hero-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, .75);
            font-size: 13px;
        }
        .hero-meta-item i {
            color: var(--accent);
        }

        /* ===== 筛选标签 ===== */
        .filter-section {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 999px;
            background: var(--bg);
            border: 1px solid var(--border);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-muted);
            transition: all var(--transition);
        }
        .filter-tag i {
            font-size: 11px;
        }
        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(79, 70, 229, .04);
        }
        .filter-tag.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(79, 70, 229, .25);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .section-head h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
            position: relative;
            padding-left: 18px;
        }
        .section-head h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 5px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--primary), var(--primary-light));
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 15px;
        }
        .section-head .more-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            padding: 8px 16px;
            border-radius: 999px;
            background: rgba(79, 70, 229, .08);
            transition: all var(--transition);
        }
        .section-head .more-link:hover {
            background: rgba(79, 70, 229, .14);
            transform: translateX(4px);
        }

        /* ===== 最新资讯列表 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .news-item {
            display: flex;
            gap: 22px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 18px;
            transition: all var(--transition);
            align-items: center;
        }
        .news-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: rgba(79, 70, 229, .2);
        }
        .news-item-thumb {
            flex-shrink: 0;
            width: 180px;
            height: 130px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--bg);
        }
        .news-item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .news-item:hover .news-item-thumb img {
            transform: scale(1.05);
        }
        .news-item-info {
            flex: 1;
            min-width: 0;
        }
        .news-item-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .news-tag {
            display: inline-flex;
            align-items: center;
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(79, 70, 229, .1);
            color: var(--primary);
        }
        .news-tag.amber {
            background: rgba(245, 158, 11, .12);
            color: #b45309;
        }
        .news-tag.green {
            background: rgba(16, 185, 129, .12);
            color: #047857;
        }
        .news-tag.rose {
            background: rgba(244, 63, 94, .1);
            color: #be123c;
        }
        .news-date {
            color: var(--text-muted);
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-item-info h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.4;
            color: var(--text);
            transition: color var(--transition);
        }
        .news-item:hover .news-item-info h3 {
            color: var(--primary);
        }
        .news-item-info p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item-link {
            flex-shrink: 0;
            margin-left: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid var(--border);
            color: var(--text-muted);
            transition: all var(--transition);
        }
        .news-item:hover .news-item-link {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        /* ===== 资讯卡片网格 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
            border-color: rgba(79, 70, 229, .18);
        }
        .news-card-media {
            position: relative;
            height: 180px;
            overflow: hidden;
            background: var(--bg);
        }
        .news-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .45s ease;
        }
        .news-card:hover .news-card-media img {
            transform: scale(1.06);
        }
        .news-card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(15, 23, 42, .7);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
        }
        .news-card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-card-body h3 {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
            color: var(--text);
            transition: color var(--transition);
        }
        .news-card:hover .news-card-body h3 {
            color: var(--primary);
        }
        .news-card-body p {
            color: var(--text-muted);
            font-size: 13.5px;
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
        }
        .news-card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 14px;
            border-top: 1px solid #f1f5f9;
        }
        .news-card-date {
            font-size: 12.5px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }
        .news-card-link:hover {
            gap: 10px;
        }

        /* ===== 热门主题 ===== */
        .topics-section {
            background: var(--bg-deep);
            position: relative;
            overflow: hidden;
        }
        .topics-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .15;
        }
        .topics-section .container-x {
            position: relative;
            z-index: 2;
        }
        .topics-section .section-head h2 {
            color: #fff;
        }
        .topics-section .section-head p {
            color: rgba(255, 255, 255, .65);
        }
        .topic-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            max-width: 760px;
        }
        .topic-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .16);
            color: rgba(255, 255, 255, .9);
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition);
            backdrop-filter: blur(4px);
        }
        .topic-item i {
            color: var(--accent);
            font-size: 13px;
        }
        .topic-item:hover {
            background: rgba(79, 70, 229, .6);
            border-color: rgba(79, 70, 229, .6);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(79, 70, 229, .3);
        }
        .topic-item .topic-count {
            font-size: 11px;
            padding: 2px 10px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .15);
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .stat-item {
            text-align: center;
            padding: 24px 16px;
            border-radius: var(--radius-md);
            transition: all var(--transition);
        }
        .stat-item:hover {
            background: rgba(79, 70, 229, .04);
            transform: translateY(-3px);
        }
        .stat-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 18px;
            background: linear-gradient(135deg, rgba(79, 70, 229, .12), rgba(79, 70, 229, .05));
            color: var(--primary);
            font-size: 22px;
        }
        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.2;
        }
        .stat-number span {
            font-size: 22px;
            color: var(--primary);
        }
        .stat-label {
            color: var(--text-muted);
            font-size: 14px;
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-section .section-head {
            justify-content: center;
            text-align: center;
        }
        .faq-section .section-head h2 {
            padding-left: 0;
        }
        .faq-section .section-head h2::before {
            display: none;
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(79, 70, 229, .25);
            box-shadow: var(--shadow-md);
        }
        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            transition: color var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(79, 70, 229, .1);
            color: var(--primary);
            font-size: 14px;
            transition: all var(--transition);
        }
        .faq-item[open] summary {
            color: var(--primary);
        }
        .faq-item[open] summary .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 24px 22px;
            color: var(--text-muted);
            font-size: 14.5px;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 0 0 80px;
            background: var(--bg);
        }
        .cta-banner {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: linear-gradient(120deg, var(--primary-dark), var(--primary) 50%, #6d28d9);
            padding: 64px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            box-shadow: 0 20px 50px rgba(79, 70, 229, .25);
        }
        .cta-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: .12;
            mix-blend-mode: overlay;
        }
        .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-content h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-content p {
            color: rgba(255, 255, 255, .85);
            font-size: 15px;
            max-width: 480px;
        }
        .cta-buttons {
            position: relative;
            z-index: 2;
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 26px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(0, 0, 0, .12);
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, .18);
        }
        .btn-outline-light {
            border: 1.5px solid rgba(255, 255, 255, .7);
            color: #fff;
            background: transparent;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .14);
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, .75);
            padding: 70px 0 0;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr .8fr .8fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand .brand-logo {
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-desc {
            color: rgba(255, 255, 255, .55);
            font-size: 14px;
            line-height: 1.8;
            max-width: 340px;
            margin-top: 16px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            transition: all var(--transition);
        }
        .footer-links a i {
            font-size: 12px;
            color: var(--primary-light);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
            flex-wrap: wrap;
        }
        .footer-tech {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer-tech i {
            color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .desktop-nav-wrapper {
                display: none;
            }
            .mobile-topbar {
                display: flex;
            }
            .mobile-nav.open {
                display: flex;
            }
            .section {
                padding: 56px 0;
            }
            .news-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .news-item-thumb {
                width: 100%;
                height: 180px;
            }
            .news-item-link {
                display: none;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .cta-banner {
                flex-direction: column;
                padding: 40px 28px;
                text-align: center;
            }
            .cta-content p {
                margin: 0 auto;
            }
            .cta-buttons {
                justify-content: center;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .container-x {
                padding: 0 16px;
            }
            .nav-group-left {
                padding-right: 16px;
            }
            .nav-group-right {
                padding-left: 16px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .hero-content {
                padding: 56px 0;
            }
            .category-hero-bg {
                min-height: 300px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .filter-tags {
                flex-wrap: nowrap;
                overflow-x: auto;
                padding-bottom: 8px;
                -webkit-overflow-scrolling: touch;
            }
            .filter-tag {
                flex-shrink: 0;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 28px;
            }
            .cta-banner {
                padding: 32px 20px;
            }
            .cta-content h2 {
                font-size: 22px;
            }
            .btn {
                padding: 12px 20px;
                font-size: 14px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1d4ed8;
            --primary-dark: #172f8f;
            --primary-soft: #e8efff;
            --primary-light: #c7d6f9;
            --accent: #f59e0b;
            --bg: #f7f9fc;
            --bg-soft: #eef3fa;
            --card-bg: #ffffff;
            --heading: #0f172a;
            --text: #334155;
            --muted: #64748b;
            --border: #e5e9f0;
            --border-soft: #eef1f6;
            --border-strong: #d6deeb;
            --radius: 16px;
            --radius-lg: 26px;
            --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
            --shadow-lg: 0 22px 50px rgba(29, 78, 216, 0.12);
            --font: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

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

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

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

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

        button {
            font-family: inherit;
        }

        :focus-visible {
            outline: 3px solid rgba(29, 78, 216, 0.35);
            outline-offset: 2px;
        }

        ::selection {
            background: rgba(29, 78, 216, 0.18);
            color: var(--primary-dark);
        }

        .container-x {
            max-width: 1240px;
            margin-inline: auto;
            padding-inline: 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 14px rgba(15, 23, 42, 0.04);
        }

        .desktop-nav-wrapper {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
            min-height: 76px;
            gap: 24px;
        }

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

        .nav-group-right {
            justify-content: flex-end;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .nav-link i {
            font-size: 12px;
            opacity: 0.75;
        }

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

        .nav-link:active {
            transform: scale(0.97);
        }

        .nav-link.active {
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 600;
            box-shadow: inset 0 0 0 1px rgba(29, 78, 216, 0.08);
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }

        .brand-badge {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 800;
            border-radius: 12px;
            font-size: 14px;
            padding: 6px 11px;
            letter-spacing: 0.5px;
            box-shadow: 0 8px 18px rgba(29, 78, 216, 0.24);
        }

        .brand-logo > span:last-child {
            font-weight: 700;
            font-size: 18px;
            color: var(--heading);
            white-space: nowrap;
        }

        .mobile-topbar {
            display: none;
        }

        .menu-trigger {
            background: none;
            border: none;
            width: 42px;
            height: 42px;
            font-size: 20px;
            color: var(--heading);
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: background 0.2s;
        }

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

        .mobile-nav {
            display: none;
        }

        /* ===== 页面 Hero ===== */
        .page-hero {
            padding: 84px 0;
            color: #fff;
            background-color: #0f172a;
            background-image: linear-gradient(115deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 64, 175, 0.78) 100%), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            overflow: hidden;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.72);
            margin-bottom: 22px;
        }

        .breadcrumb a {
            transition: color 0.2s;
        }

        .breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .hero-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.24);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 22px;
        }

        .page-hero h1 {
            font-size: clamp(32px, 5vw, 50px);
            line-height: 1.18;
            margin: 0 0 18px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }

        .hero-lead {
            font-size: 17px;
            max-width: 720px;
            color: rgba(255, 255, 255, 0.86);
            margin: 0 0 28px;
        }

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

        /* ===== 通用板块 ===== */
        .section {
            padding: 84px 0;
        }

        .section.section-bg {
            background: #f0f4fa;
        }

        .section.pt-0 {
            padding-top: 0;
        }

        .section-header {
            max-width: 760px;
            margin: 0 auto 52px;
            text-align: center;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-soft);
            border: 1px solid var(--primary-light);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--heading);
            margin: 0;
            letter-spacing: -0.3px;
        }

        .section-sub {
            margin-top: 14px;
            color: var(--muted);
            font-size: 16px;
        }

        .grid {
            display: grid;
            gap: 26px;
        }

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

        .grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }

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

        /* ===== 支持服务卡片 ===== */
        .support-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            position: relative;
            overflow: hidden;
        }

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

        .support-card::after {
            content: "";
            position: absolute;
            right: -30px;
            top: -30px;
            width: 90px;
            height: 90px;
            background: radial-gradient(circle, rgba(29, 78, 216, 0.07), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .card-icon {
            width: 54px;
            height: 54px;
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            background: var(--primary-soft);
            color: var(--primary);
            margin-bottom: 20px;
        }

        .support-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin: 0 0 10px;
            color: var(--heading);
        }

        .support-card p {
            font-size: 14.5px;
            color: var(--muted);
            margin: 0 0 18px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: gap 0.2s;
        }

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

        /* ===== 服务流程 ===== */
        .step-card {
            position: relative;
            padding: 28px;
            background: #fff;
            border: 1px dashed var(--border-strong);
            border-radius: var(--radius);
            transition: background 0.3s, border-color 0.3s;
        }

        .step-card:hover {
            background: var(--bg-soft);
            border-color: var(--primary);
        }

        .step-number {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            box-shadow: 0 8px 20px rgba(29, 78, 216, 0.22);
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--heading);
            margin: 0 0 8px;
        }

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

        /* ===== 知识文章卡片 ===== */
        .knowledge-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform 0.35s ease, box-shadow 0.35s ease;
        }

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

        .knowledge-thumb {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .knowledge-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.55s ease;
        }

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

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

        .tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 12px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-soft);
            border-radius: 999px;
            padding: 4px 12px;
        }

        .knowledge-body h3 {
            font-size: 17px;
            line-height: 1.55;
            color: var(--heading);
            margin: 0 0 10px;
        }

        .knowledge-body p {
            font-size: 14px;
            color: var(--muted);
            margin: 0;
            flex: 1;
        }

        .knowledge-more {
            margin-top: 18px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: gap 0.2s;
        }

        .knowledge-more:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

        /* ===== 数据统计 ===== */
        .stats-band {
            background: linear-gradient(120deg, #0f172a, #1e3a8a);
            border-radius: var(--radius-lg);
            padding: 56px 44px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .stats-band::before {
            content: "";
            position: absolute;
            right: -60px;
            top: -80px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.12), transparent 70%);
            border-radius: 50%;
        }

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

        .stat-item {
            text-align: center;
            padding: 16px 12px;
        }

        .stat-number {
            font-size: 40px;
            font-weight: 900;
            line-height: 1.1;
            color: #fff;
            letter-spacing: -0.5px;
        }

        .stat-label {
            margin-top: 10px;
            color: rgba(255, 255, 255, 0.72);
            font-size: 14px;
        }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(120deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-lg);
            padding: 58px 48px;
            color: #fff;
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-box::after {
            content: "";
            position: absolute;
            left: -80px;
            bottom: -110px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.15), transparent 70%);
            border-radius: 50%;
        }

        .cta-box h2 {
            font-size: 30px;
            font-weight: 800;
            margin: 0 0 12px;
            letter-spacing: -0.3px;
        }

        .cta-box p {
            margin: 0 auto;
            font-size: 16px;
            max-width: 680px;
            color: rgba(255, 255, 255, 0.85);
        }

        .cta-buttons {
            position: relative;
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 30px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
        }

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

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 8px 22px rgba(0, 0, 0, 0.14);
        }

        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 30px rgba(0, 0, 0, 0.18);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.68);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
            display: grid;
            gap: 14px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: border-color 0.25s, box-shadow 0.25s;
        }

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

        .faq-item summary {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-weight: 600;
            font-size: 15.5px;
            color: var(--heading);
            cursor: pointer;
            list-style: none;
        }

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

        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 13px;
            color: var(--primary);
            transition: transform 0.25s;
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 24px 22px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.85;
        }

        .faq-answer p {
            margin: 0;
        }

        /* ===== 联系渠道 ===== */
        .channel-card {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 28px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
        }

        .channel-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary-light);
            box-shadow: var(--shadow-lg);
        }

        .channel-icon {
            flex: none;
            width: 50px;
            height: 50px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            background: var(--primary-soft);
            color: var(--primary);
        }

        .channel-card h3 {
            font-size: 18px;
            color: var(--heading);
            margin: 0 0 8px;
        }

        .channel-card p {
            font-size: 14px;
            color: var(--muted);
            margin: 0 0 10px;
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0b1526;
            color: #94a3b8;
            padding-top: 64px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 44px;
            padding-bottom: 38px;
        }

        .footer-brand .brand-logo > span:last-child {
            color: #fff;
        }

        .footer-desc {
            font-size: 14.5px;
            line-height: 1.8;
            color: #7e8ea9;
            margin-top: 18px;
            max-width: 360px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            margin: 0 0 18px;
            font-weight: 700;
        }

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

        .footer-links a {
            color: #94a3b8;
            font-size: 14px;
            transition: color 0.2s, padding-left 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 22px 0 26px;
            display: flex;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 14px;
            color: #64748b;
        }

        .footer-tech {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .desktop-nav-wrapper {
                display: none;
            }

            .mobile-topbar {
                display: flex;
                align-items: center;
                justify-content: space-between;
                min-height: 64px;
            }

            .mobile-nav {
                display: flex;
                flex-direction: column;
                position: absolute;
                left: 0;
                right: 0;
                top: 100%;
                background: #fff;
                border-bottom: 1px solid var(--border);
                padding: 0 20px;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.35s ease;
            }

            .mobile-nav.open {
                max-height: 440px;
                box-shadow: 0 24px 40px rgba(15, 23, 42, 0.08);
            }

            .mobile-nav .nav-link {
                padding: 15px 4px;
                border-bottom: 1px solid var(--border-soft);
                border-radius: 0;
                justify-content: space-between;
                width: 100%;
            }

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

            .mobile-nav .nav-link.active {
                background: transparent;
                box-shadow: none;
            }

            .grid-4,
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }

            .page-hero {
                padding: 64px 0;
            }

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

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

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

            .cta-box {
                padding: 44px 28px;
            }

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

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

            .stats-band {
                padding: 42px 24px;
            }
        }

        @media (max-width: 520px) {
            .container-x {
                padding-inline: 18px;
            }

            .grid-4,
            .grid-3 {
                grid-template-columns: 1fr;
            }

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

            .stat-number {
                font-size: 30px;
            }

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

            .hero-actions .btn {
                justify-content: center;
            }

            .brand-logo > span:last-child {
                font-size: 16px;
            }

            .footer-bottom {
                flex-direction: column;
            }
        }