/* roulang page: index */
:root {
            --primary: #3E7CB1;
            --primary-light: #E8F1F8;
            --primary-dark: #2C5F8A;
            --accent: #1F3A5F;
            --gold: #D9A441;
            --bg: #F7F9FB;
            --white: #FFFFFF;
            --text: #1F2A3A;
            --text-light: #5A6B7C;
            --border: #E4EBF2;
            --shadow: 0 8px 24px rgba(31, 58, 95, 0.06);
            --shadow-hover: 0 16px 32px rgba(31, 58, 95, 0.12);
            --radius: 12px;
            --radius-sm: 8px;
            --transition: 0.25s ease;
        }

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

        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            min-height: 100vh;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        .section {
            padding: 80px 0;
        }

        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-head .section-title {
            font-size: 34px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-head .section-subtitle {
            font-size: 16px;
            color: var(--text-light);
            max-width: 560px;
            margin: 0 auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff !important;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(62, 124, 177, 0.25);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: 0 6px 18px rgba(62, 124, 177, 0.35);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary) !important;
            border-color: var(--primary);
        }

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

        .btn-gold {
            background: var(--gold);
            color: #fff !important;
            border-color: var(--gold);
        }

        .btn-gold:hover {
            background: #c8943a;
            transform: translateY(-2px);
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--white);
            height: 72px;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 8px rgba(31, 58, 95, 0.04);
        }

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

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

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 9px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            margin-left: 40px;
        }

        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            padding: 8px 2px;
            transition: color 0.25s ease;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.3s ease;
        }

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

        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }

        .btn-header {
            margin-left: auto;
            padding: 10px 22px;
            font-size: 14px;
        }

        /* Mobile Tabbar */
        .mobile-tabbar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--white);
            border-top: 1px solid var(--border);
            z-index: 200;
            box-shadow: 0 -2px 10px rgba(31, 58, 95, 0.06);
        }

        .mobile-tabbar .tab-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            font-size: 12px;
            color: var(--text-light);
            transition: color 0.2s;
        }

        .mobile-tabbar .tab-item i {
            font-size: 20px;
        }

        .mobile-tabbar .tab-item.active {
            color: var(--primary);
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center 60%;
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(247, 249, 251, 1) 0%, rgba(247, 249, 251, 0.92) 35%, rgba(247, 249, 251, 0.55) 70%, rgba(247, 249, 251, 0.2) 100%);
        }

        .hero-content {
            position: relative;
            max-width: 720px;
            padding: 70px 0;
        }

        .hero h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--accent);
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .hero h1 .highlight {
            color: var(--primary);
        }

        .hero-subtitle {
            font-size: 18px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 520px;
        }

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

        /* Stats */
        .stats-section {
            padding: 80px 0 60px;
        }

        .stat-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
            margin-bottom: 20px;
            height: calc(100% - 20px);
        }

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

        .stat-number {
            font-size: 56px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 12px;
        }

        .stat-note {
            font-size: 12px;
            color: #9AAAB8;
            border-top: 1px solid var(--border);
            padding-top: 10px;
        }

        /* Services Bento */
        .services-section {
            padding: 60px 0 80px;
        }

        .service-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 0;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            height: 100%;
        }

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

        .service-card .card-topbar {
            height: 5px;
            background: var(--primary);
        }

        .service-card .card-topbar.gold {
            background: var(--gold);
        }

        .service-card .card-topbar.accent {
            background: var(--accent);
        }

        .service-card .card-body {
            padding: 28px;
        }

        .service-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 18px;
        }

        .service-card .card-icon.gold {
            background: #FBF3E4;
            color: var(--gold);
        }

        .service-card .card-icon.accent {
            background: #E9EEF5;
            color: var(--accent);
        }

        .service-card .card-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 10px;
        }

        .service-card .card-desc {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
        }

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

        .service-card .card-link i {
            transition: transform 0.25s;
        }

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

        .service-card .card-img {
            height: 160px;
            overflow: hidden;
            background: var(--primary-light);
        }

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

        .service-card.wide .card-img {
            height: 210px;
        }

        /* Comparison */
        .comparison-section {
            padding: 80px 0;
            background: var(--white);
        }

        .comparison-wrap {
            display: flex;
            align-items: stretch;
            gap: 32px;
            position: relative;
            flex-wrap: wrap;
        }

        .comparison-card {
            flex: 1;
            min-width: 280px;
            border-radius: var(--radius);
            padding: 36px;
            border: 1px solid var(--border);
            background: var(--white);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .comparison-card:hover {
            box-shadow: var(--shadow-hover);
        }

        .comparison-card.dark-card {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
        }

        .comparison-card.dark-card .vs-list li {
            color: rgba(255, 255, 255, 0.85);
        }

        .comparison-card .comparison-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--accent);
        }

        .comparison-card.dark-card .comparison-title {
            color: #fff;
        }

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

        .vs-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.6;
        }

        .vs-list li i {
            color: var(--primary);
            margin-top: 3px;
            font-size: 15px;
        }

        .dark-card .vs-list li i {
            color: var(--gold);
        }

        .vs-badge {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--gold);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            box-shadow: 0 4px 16px rgba(217, 164, 65, 0.4);
            z-index: 2;
        }

        /* News */
        .news-section {
            padding: 80px 0;
            background: var(--bg);
        }

        .news-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .news-head .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--accent);
        }

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

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

        .news-card {
            display: flex;
            align-items: center;
            gap: 24px;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .news-date-block {
            flex-shrink: 0;
            width: 80px;
            text-align: center;
            border-right: 1px solid var(--border);
            padding-right: 20px;
        }

        .news-date-block .date-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            display: block;
        }

        .news-date-block .date-month {
            font-size: 13px;
            color: var(--text-light);
        }

        .news-content-wrap {
            flex: 1;
            min-width: 0;
        }

        .news-meta {
            margin-bottom: 6px;
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
        }

        .news-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .news-summary {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        .news-arrow {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: var(--transition);
        }

        .news-card:hover .news-arrow {
            background: var(--primary);
            color: #fff;
            transform: translateX(4px);
        }

        .news-empty {
            text-align: center;
            background: var(--white);
            border: 1px dashed var(--border);
            border-radius: var(--radius);
            padding: 50px 20px;
            color: var(--text-light);
        }

        .news-empty i {
            font-size: 36px;
            color: #B0C3D4;
            margin-bottom: 12px;
            display: block;
        }

        /* FAQ */
        .faq-section {
            padding: 80px 0;
            background: var(--white);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item.active {
            box-shadow: var(--shadow);
            border-color: #C9DCEB;
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            user-select: none;
        }

        .faq-number {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .faq-question-text {
            flex: 1;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
        }

        .faq-toggle {
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-light);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.active .faq-toggle {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 20px 68px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.75;
        }

        /* Contact */
        .contact-section {
            padding: 80px 0;
            background: var(--bg);
            position: relative;
        }

        .contact-wrap {
            display: flex;
            gap: 48px;
            align-items: flex-start;
            flex-wrap: wrap;
        }

        .contact-left {
            flex: 1;
            min-width: 300px;
        }

        .contact-left .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 16px;
        }

        .contact-left .contact-desc {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.75;
            margin-bottom: 24px;
        }

        .trust-points {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .trust-points li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: var(--text-light);
        }

        .trust-points li i {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            flex-shrink: 0;
        }

        .contact-right {
            flex: 1;
            min-width: 320px;
            max-width: 520px;
        }

        .form-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px;
            box-shadow: var(--shadow);
        }

        .form-card .form-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }

        .form-input,
        .form-select,
        .form-textarea {
            width: 100%;
            height: 48px;
            border: 1px solid #D5DEE8;
            border-radius: var(--radius-sm);
            padding: 0 14px;
            font-size: 14px;
            color: var(--text);
            background: var(--white);
            transition: border-color 0.25s, box-shadow 0.25s;
            font-family: inherit;
        }

        .form-textarea {
            height: auto;
            padding: 12px 14px;
            resize: vertical;
            min-height: 100px;
        }

        .form-input:focus,
        .form-select:focus,
        .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(62, 124, 177, 0.12);
        }

        .form-submit {
            width: 100%;
        }

        /* Footer */
        .site-footer {
            background: #14293F;
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 0;
            font-size: 14px;
        }

        .footer-top {
            display: flex;
            gap: 48px;
            padding-bottom: 40px;
            flex-wrap: wrap;
        }

        .footer-col {
            flex: 1;
            min-width: 200px;
        }

        .footer-col:first-child {
            flex: 1.5;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-logo .logo-icon {
            background: var(--primary);
        }

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

        .footer-desc {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 340px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }

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

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            transition: color 0.25s;
        }

        .footer-col ul li a:hover {
            color: var(--gold);
        }

        .footer-contact p {
            margin-bottom: 10px;
            color: rgba(255, 255, 255, 0.55);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact p i {
            width: 16px;
            color: var(--gold);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }

        /* Responsive */
        @media screen and (max-width: 1024px) {
            .desktop-nav {
                gap: 20px;
                margin-left: 20px;
            }

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

            .section {
                padding: 64px 0;
            }

            .stats-section {
                padding: 64px 0 44px;
            }

            .comparison-wrap {
                gap: 24px;
            }
        }

        @media screen and (max-width: 768px) {
            .desktop-nav {
                display: none;
            }

            .btn-header {
                display: none;
            }

            .site-header {
                height: 64px;
            }

            .header-inner {
                height: 64px;
                justify-content: center;
            }

            .mobile-tabbar {
                display: flex;
            }

            body {
                padding-bottom: 64px;
            }

            .hero {
                min-height: 480px;
                background-position: center center;
            }

            .hero::before {
                background: linear-gradient(180deg, rgba(247, 249, 251, 0.95) 0%, rgba(247, 249, 251, 0.75) 50%, rgba(247, 249, 251, 0.55) 100%);
            }

            .hero-content {
                text-align: center;
                padding: 48px 0;
                margin: 0 auto;
            }

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

            .hero-subtitle {
                font-size: 16px;
            }

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

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

            .stat-number {
                font-size: 44px;
            }

            .news-card {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
                text-align: center;
            }

            .news-date-block {
                border-right: none;
                border-bottom: 1px solid var(--border);
                padding-right: 0;
                padding-bottom: 8px;
                width: auto;
                display: flex;
                align-items: baseline;
                gap: 6px;
                justify-content: center;
            }

            .news-date-block .date-num {
                font-size: 24px;
            }

            .news-content-wrap {
                text-align: left;
                width: 100%;
            }

            .news-arrow {
                display: none;
            }

            .news-head {
                flex-direction: column;
                align-items: flex-start;
            }

            .faq-answer-inner {
                padding-left: 24px;
            }

            .contact-wrap {
                gap: 32px;
            }

            .form-card {
                padding: 24px;
            }

            .vs-badge {
                position: static;
                transform: none;
                margin: 0 auto;
            }

            .comparison-wrap {
                flex-direction: column;
            }

            .footer-top {
                flex-direction: column;
                gap: 32px;
            }
        }

        @media screen and (max-width: 640px) {
            .container {
                padding: 0 16px;
            }

            .section {
                padding: 56px 0;
            }

            .section-head {
                margin-bottom: 32px;
            }

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

            .hero h1 {
                font-size: 30px;
            }

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

            .hero {
                min-height: 440px;
            }

            .stat-card {
                padding: 24px 16px;
            }

            .service-card .card-body {
                padding: 20px;
            }

            .news-card {
                padding: 14px;
            }

            .contact-left .section-title {
                font-size: 28px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #3E7CB1;
            --primary-light: #EAF1F8;
            --primary-dark: #356A99;
            --secondary: #1F3A5F;
            --accent: #D9A441;
            --bg: #F7F9FB;
            --white: #FFFFFF;
            --text: #1F2A3A;
            --text-muted: #5A6B7C;
            --border: #E4EBF2;
            --radius-lg: 12px;
            --radius-sm: 8px;
            --shadow: 0 8px 24px rgba(31, 58, 95, 0.06);
            --shadow-hover: 0 16px 32px rgba(31, 58, 95, 0.12);
            --transition: 0.25s ease;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* ===== Header ===== */
        .site-header {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            height: 72px;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(31, 58, 95, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .desktop-nav {
            display: flex;
            gap: 32px;
        }
        .nav-link {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-muted);
            position: relative;
            padding: 28px 0;
            line-height: 1;
            display: inline-block;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 20px;
            height: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: right;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
            transform-origin: left;
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            padding: 12px 24px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(62, 124, 177, 0.3);
        }
        .btn-outline {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 16px;
            border-radius: var(--radius-sm);
        }
        .btn-header {
            padding: 10px 20px;
            font-size: 14px;
            margin-left: 16px;
            flex-shrink: 0;
        }

        /* ===== 分類 Hero ===== */
        .category-hero {
            background: linear-gradient(90deg, rgba(247, 249, 251, 0.96) 0%, rgba(247, 249, 251, 0.85) 45%, rgba(247, 249, 251, 0.4) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            padding: 88px 0 72px;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            color: var(--primary-dark);
        }
        .breadcrumb i {
            font-size: 12px;
            color: #B0C0CF;
        }
        .category-hero h1 {
            font-size: 44px;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.2;
            margin-bottom: 18px;
        }
        .category-hero h1 .highlight {
            color: var(--primary);
        }
        .category-hero .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            line-height: 1.75;
            max-width: 680px;
            margin-bottom: 32px;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 区块通用 ===== */
        .overview-section,
        .feature-block,
        .link-section,
        .faq-section {
            padding: 80px 0;
        }
        .feature-block-alt {
            background: var(--white);
        }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }
        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 30px;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== 服务矩阵概览 ===== */
        .overview-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .overview-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
        }
        .overview-card:nth-child(1)::before {
            background: var(--primary);
        }
        .overview-card:nth-child(2)::before {
            background: var(--secondary);
        }
        .overview-card:nth-child(3)::before {
            background: var(--accent);
        }
        .overview-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .overview-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 24px;
            background: var(--primary-light);
            color: var(--primary);
        }
        .overview-card:nth-child(2) .overview-icon {
            background: #EDF1F6;
            color: var(--secondary);
        }
        .overview-card:nth-child(3) .overview-icon {
            background: #FAF3E4;
            color: var(--accent);
        }
        .overview-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 10px;
        }
        .overview-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== 图文交错 ===== */
        .feature-block .grid-x {
            align-items: center;
        }
        .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .feature-image:hover {
            box-shadow: var(--shadow-hover);
        }
        .feature-image img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .feature-image:hover img {
            transform: scale(1.03);
        }
        .feature-content {
            padding: 0 20px;
        }
        .feature-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 14px;
            border-radius: 30px;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .feature-content h3 {
            font-size: 26px;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.35;
            margin-bottom: 14px;
        }
        .feature-content p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 18px;
        }
        .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: var(--text);
            padding: 6px 0;
        }
        .feature-list li i {
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
        }

        /* ===== 关联跳转 ===== */
        .link-section {
            background: var(--white);
        }
        .link-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 24px;
            text-align: center;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }
        .link-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .link-card.active-card {
            background: var(--white);
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }
        .link-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 22px;
            background: var(--primary-light);
            color: var(--primary);
        }
        .link-card:nth-child(2) .link-icon {
            background: #EDF1F6;
            color: var(--secondary);
        }
        .link-card:nth-child(3) .link-icon {
            background: #FAF3E4;
            color: var(--accent);
        }
        .link-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .link-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 18px;
        }
        .link-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            padding: 8px 20px;
            border: 1px solid var(--primary);
            border-radius: 30px;
            transition: var(--transition);
        }
        .link-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: #C8D8E4;
        }
        .faq-item.active {
            box-shadow: var(--shadow);
            border-color: var(--primary);
        }
        .faq-question {
            padding: 22px 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 17px;
            color: var(--text);
            line-height: 1.5;
            gap: 16px;
        }
        .faq-question i {
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }
        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            display: none;
            padding: 0 24px 24px;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--secondary);
            padding: 64px 0;
            text-align: center;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 16px;
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-section .btn-outline {
            border-color: rgba(255, 255, 255, 0.8);
            color: #fff;
        }
        .cta-section .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #14293F;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-logo .logo-icon {
            background: var(--primary);
            color: #fff;
            width: 36px;
            height: 36px;
            font-size: 16px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .footer-logo .logo-text {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
        }
        .site-footer ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact i {
            color: var(--accent);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 20px 0;
            text-align: center;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 移动端底部 Tab ===== */
        .mobile-tabbar {
            display: none;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .category-hero {
                padding: 72px 0 56px;
            }
            .category-hero h1 {
                font-size: 36px;
            }
            .overview-section,
            .feature-block,
            .link-section,
            .faq-section {
                padding: 64px 0;
            }
            .footer-top {
                gap: 32px;
            }
        }
        @media (max-width: 767px) {
            .site-header {
                height: 64px;
            }
            .header-inner {
                height: 64px;
            }
            .desktop-nav,
            .btn-header {
                display: none;
            }
            .logo-text {
                font-size: 18px;
            }
            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }
            .mobile-tabbar {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                height: 64px;
                background: var(--white);
                border-top: 1px solid var(--border);
                z-index: 200;
                box-shadow: 0 -4px 16px rgba(31, 58, 95, 0.06);
            }
            .tab-item {
                flex: 1;
                display: flex;
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 3px;
                font-size: 11px;
                color: var(--text-muted);
                transition: var(--transition);
            }
            .tab-item i {
                font-size: 20px;
                transition: var(--transition);
            }
            .tab-item.active {
                color: var(--primary);
                font-weight: 600;
            }
            .tab-item.active i {
                color: var(--primary);
            }
            body {
                padding-bottom: 64px;
            }
            .category-hero {
                padding: 56px 0 48px;
                background: linear-gradient(180deg, rgba(247, 249, 251, 0.96) 0%, rgba(247, 249, 251, 0.85) 70%, rgba(247, 249, 251, 0.6) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero .hero-desc {
                font-size: 16px;
            }
            .hero-buttons .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .overview-section,
            .feature-block,
            .link-section,
            .faq-section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 40px;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .feature-content {
                padding: 24px 0 0;
            }
            .feature-block .grid-x {
                row-gap: 24px;
            }
            .feature-image img {
                height: 240px;
            }
            .link-card {
                margin-bottom: 16px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 32px;
            }
            .site-footer {
                padding-top: 40px;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .faq-question {
                font-size: 15px;
                padding: 18px 20px;
            }
            .faq-answer {
                padding: 0 20px 20px;
                padding-top: 14px;
            }
            .container {
                padding: 0 16px;
            }
        }
        @media (max-width: 520px) {
            .logo-text {
                font-size: 16px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .category-hero .hero-desc {
                font-size: 15px;
            }
            .hero-buttons {
                flex-direction: column;
                gap: 12px;
            }
            .hero-buttons .btn {
                width: 100%;
            }
            .overview-card {
                margin-bottom: 16px;
            }
            .cta-buttons {
                flex-direction: column;
            }
            .cta-buttons .btn {
                width: 100%;
            }
        }

/* roulang page: article */
:root {
            --primary: #3E7CB1;
            --primary-dark: #2D6493;
            --primary-light: #EAF1F7;
            --ink: #1F3A5F;
            --gold: #D9A441;
            --bg: #F7F9FB;
            --white: #FFFFFF;
            --text: #1F2A3A;
            --text-light: #5A6B7C;
            --border: #E4EBF2;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 8px 24px rgba(31, 58, 95, 0.06);
            --shadow-hover: 0 16px 32px rgba(31, 58, 95, 0.12);
            --transition: 0.25s ease;
        }
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            padding-bottom: 0;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            height: 72px;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 600;
            color: var(--ink);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-link {
            font-size: 15px;
            color: var(--text-light);
            font-weight: 500;
            position: relative;
            padding: 6px 0;
            transition: color var(--transition);
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link:hover,
        .nav-link.active {
            color: var(--primary);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
            gap: 8px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(62, 124, 177, 0.3);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-header {
            padding: 8px 18px;
            font-size: 14px;
        }
        .mobile-tabbar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--white);
            border-top: 1px solid var(--border);
            z-index: 1000;
            align-items: center;
            justify-content: space-around;
        }
        .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            font-size: 12px;
            color: var(--text-light);
            flex: 1;
            height: 64px;
            transition: color var(--transition);
        }
        .tab-item i {
            font-size: 20px;
            line-height: 1;
        }
        .tab-item.active {
            color: var(--primary);
        }
        .breadcrumb {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
            font-size: 14px;
            color: var(--text-light);
        }
        .breadcrumb .container {
            max-width: 760px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            margin: 0 8px;
            color: #A9BAC9;
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 360px;
        }
        .article-header {
            background: var(--white);
            padding: 56px 0 48px;
            border-bottom: 1px solid var(--border);
        }
        .article-header-inner {
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
        }
        .article-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 16px;
            border-radius: 20px;
            margin-bottom: 20px;
        }
        .article-category i {
            font-size: 12px;
        }
        .article-title {
            font-size: 42px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--ink);
            margin: 0 0 20px;
            letter-spacing: 0.5px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            color: var(--text-light);
            font-size: 14px;
            flex-wrap: wrap;
        }
        .article-meta i {
            margin-right: 6px;
            color: var(--primary);
        }
        .article-body {
            padding: 64px 0;
        }
        .article-content {
            max-width: 760px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
        }
        .article-content p {
            margin-bottom: 24px;
        }
        .article-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--ink);
            margin: 48px 0 16px;
            line-height: 1.3;
        }
        .article-content h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--ink);
            margin: 40px 0 14px;
            line-height: 1.35;
        }
        .article-content h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--ink);
            margin: 32px 0 12px;
        }
        .article-content img {
            max-width: 100%;
            border-radius: var(--radius);
            margin: 24px 0;
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: normal;
        }
        .article-content ul,
        .article-content ol {
            margin: 0 0 24px 20px;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
        }
        .article-content a:hover {
            color: var(--primary-dark);
        }
        .article-content code {
            background: var(--bg);
            border: 1px solid var(--border);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 14px;
        }
        .article-content pre {
            background: var(--ink);
            color: #E8EEF3;
            border-radius: var(--radius);
            padding: 20px 24px;
            overflow-x: auto;
            margin: 24px 0;
            font-size: 14px;
            line-height: 1.6;
        }
        .article-content pre code {
            background: transparent;
            border: none;
            padding: 0;
            color: inherit;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
        }
        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: 12px 16px;
            text-align: left;
        }
        .article-content table th {
            background: var(--bg);
            color: var(--ink);
            font-weight: 600;
        }
        .related-section {
            padding: 72px 0;
            background: var(--bg);
            border-top: 1px solid var(--border);
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-title {
            font-size: 30px;
            color: var(--ink);
            font-weight: 700;
            margin-bottom: 8px;
        }
        .section-subtitle {
            color: var(--text-light);
            font-size: 15px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            max-width: 1040px;
            margin: 0 auto;
        }
        .related-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: block;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-card-image {
            height: 160px;
            overflow: hidden;
        }
        .related-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .related-card-image img {
            transform: scale(1.04);
        }
        .related-card-body {
            padding: 20px;
        }
        .related-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card-text {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .related-card-more {
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .related-card:hover .related-card-more {
            color: var(--primary-dark);
        }
        .related-bottom {
            text-align: center;
            margin-top: 40px;
        }
        .consult-section {
            padding: 72px 0;
            background: var(--white);
            border-top: 1px solid var(--border);
        }
        .consult-card {
            max-width: 520px;
            margin: 0 auto;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 40px;
            text-align: center;
            box-shadow: var(--shadow);
        }
        .consult-card-icon {
            width: 56px;
            height: 56px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin: 0 auto 20px;
        }
        .consult-card h2 {
            font-size: 24px;
            color: var(--ink);
            font-weight: 700;
            margin-bottom: 8px;
        }
        .consult-card p {
            color: var(--text-light);
            font-size: 15px;
            margin-bottom: 24px;
        }
        .consult-form .form-row {
            display: flex;
            gap: 12px;
        }
        .consult-form input[type="text"] {
            flex: 1;
            height: 48px;
            border: 1px solid #D5DEE8;
            border-radius: var(--radius-sm);
            padding: 0 16px;
            font-size: 14px;
            background: var(--white);
            transition: border-color var(--transition), box-shadow var(--transition);
            min-width: 0;
        }
        .consult-form input[type="text"]:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(62, 124, 177, 0.15);
        }
        .consult-form input[type="text"]::placeholder {
            color: #9AAEBC;
        }
        .not-found-section {
            padding: 120px 24px;
            text-align: center;
            max-width: 600px;
            margin: 0 auto;
        }
        .not-found-section .not-found-icon {
            font-size: 64px;
            color: #B8CCDC;
            margin-bottom: 24px;
        }
        .not-found-section h1 {
            font-size: 32px;
            color: var(--ink);
            margin-bottom: 12px;
        }
        .not-found-section p {
            color: var(--text-light);
            margin-bottom: 32px;
        }
        .site-footer {
            background: #14293F;
            color: #B8C7D4;
            padding: 56px 0 0;
            font-size: 14px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-logo .logo-icon {
            background: rgba(255, 255, 255, 0.15);
            color: #B8C7D4;
        }
        .footer-logo .logo-text {
            color: #E8EEF3;
            font-size: 18px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }
        .footer-desc {
            color: #8FA6B8;
            line-height: 1.7;
            font-size: 14px;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #E8EEF3;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: #8FA6B8;
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--gold);
        }
        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #8FA6B8;
            margin-bottom: 10px;
            font-size: 14px;
        }
        .footer-contact i {
            color: #6C8CA8;
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            color: #6C8CA8;
            font-size: 13px;
        }
        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }
            .btn-header {
                display: none;
            }
            .mobile-tabbar {
                display: flex;
            }
            .site-header,
            .header-inner {
                height: 64px;
            }
            .site-header {
                position: sticky;
            }
            body {
                padding-bottom: 64px;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .related-card:last-child {
                grid-column: 1 / -1;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .article-title {
                font-size: 34px;
            }
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0;
            }
            .logo-text {
                font-size: 18px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }
            .breadcrumb {
                padding: 12px 0;
                font-size: 13px;
            }
            .breadcrumb .current {
                max-width: 180px;
            }
            .article-header {
                padding: 36px 0 32px;
            }
            .article-title {
                font-size: 28px;
                line-height: 1.3;
            }
            .article-meta {
                flex-direction: column;
                gap: 8px;
            }
            .article-body {
                padding: 40px 0;
            }
            .article-content {
                font-size: 15px;
            }
            .article-content h2 {
                font-size: 22px;
            }
            .article-content h3 {
                font-size: 19px;
            }
            .article-content blockquote {
                padding: 12px 16px;
            }
            .related-section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-card:last-child {
                grid-column: auto;
            }
            .related-card-image {
                height: 140px;
            }
            .consult-section {
                padding: 48px 0;
            }
            .consult-card {
                padding: 24px;
            }
            .consult-form .form-row {
                flex-direction: column;
            }
            .consult-form input[type="text"] {
                width: 100%;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 24px;
            }
            .footer-bottom {
                padding: 16px 0;
                font-size: 12px;
            }
            .not-found-section {
                padding: 80px 16px;
            }
            .not-found-section h1 {
                font-size: 26px;
            }
            .not-found-section .not-found-icon {
                font-size: 48px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #3E7CB1;
            --ink-blue: #1F3A5F;
            --gold: #D9A441;
            --bg: #F7F9FB;
            --white: #FFFFFF;
            --text-dark: #1F2A3A;
            --text-muted: #5A6B7C;
            --border: #E4EBF2;
            --radius: 12px;
            --radius-btn: 8px;
            --shadow: 0 8px 24px rgba(31, 58, 95, 0.06);
            --shadow-hover: 0 16px 32px rgba(31, 58, 95, 0.12);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
        }

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

        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg);
            color: var(--text-dark);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            padding-bottom: 0;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
        }
        a:hover,
        a:focus {
            color: var(--ink-blue);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            border: 2px solid transparent;
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .btn i {
            font-size: 14px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--ink-blue);
            border-color: var(--ink-blue);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(31, 58, 95, 0.2);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(62, 124, 177, 0.2);
        }

        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            height: 72px;
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--ink-blue));
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(62, 124, 177, 0.25);
        }
        .logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--ink-blue);
            letter-spacing: 0.5px;
            line-height: 1.2;
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            margin-left: 40px;
        }
        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-dark);
            padding: 8px 0;
            line-height: 1.2;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.3s ease;
        }
        .nav-link:hover,
        .nav-link.active {
            color: var(--primary);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .btn-header {
            padding: 11px 22px;
            font-size: 14px;
        }

        /* 分类 Hero */
        .category-hero {
            background: linear-gradient(90deg, rgba(247, 249, 251, 0.95) 0%, rgba(247, 249, 251, 0.88) 60%, rgba(247, 249, 251, 0.45) 100%), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            padding: 72px 0 76px;
            border-bottom: 1px solid var(--border);
        }
        .category-hero .hero-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--gold);
            text-transform: uppercase;
            background: rgba(217, 164, 65, 0.1);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 16px;
        }
        .category-hero h1 {
            font-size: 44px;
            line-height: 1.2;
            font-weight: 700;
            color: var(--ink-blue);
            margin-bottom: 16px;
            max-width: 760px;
        }
        .category-hero h1 .highlight {
            color: var(--primary);
        }
        .category-hero p {
            font-size: 18px;
            line-height: 1.7;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 24px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* 图文区块 */
        .feature-section {
            padding: 88px 0;
            border-bottom: 1px solid var(--border);
            background: var(--white);
        }
        .feature-section:nth-of-type(even) {
            background: var(--bg);
        }
        .feature-copy {
            padding-right: 24px;
        }
        .feature-section:nth-of-type(even) .feature-copy {
            padding-right: 0;
            padding-left: 24px;
        }
        .feature-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--primary);
            background: rgba(62, 124, 177, 0.08);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
        }
        .feature-copy h2 {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--ink-blue);
            margin-bottom: 18px;
        }
        .feature-copy p {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .feature-list {
            list-style: none;
            margin: 20px 0 0;
            padding: 0;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text-dark);
            padding: 8px 0;
            line-height: 1.5;
        }
        .feature-list li i {
            color: var(--primary);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .feature-steps {
            list-style: none;
            margin: 20px 0 0;
            padding: 0;
        }
        .feature-steps li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text-dark);
            padding: 8px 0;
            line-height: 1.5;
        }
        .feature-steps li .step-num {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }
        .tag {
            display: inline-block;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-blue);
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 7px 18px;
            transition: all 0.25s ease;
        }
        .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(62, 124, 177, 0.05);
        }
        .feature-image {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .feature-image img {
            width: 100%;
            max-width: 520px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            object-fit: cover;
            transition: transform 0.4s ease, box-shadow 0.4s ease;
        }
        .feature-image img:hover {
            transform: translateY(-4px) scale(1.01);
            box-shadow: var(--shadow-hover);
        }

        /* 关联跳转 */
        .related-links {
            padding: 88px 0 96px;
            background: var(--bg);
        }
        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-head h2 {
            font-size: 34px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--ink-blue);
            margin-bottom: 10px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
        }
        .related-card {
            display: block;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 26px;
            box-shadow: var(--shadow);
            transition: all 0.25s ease;
            height: 100%;
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .related-card .icon-wrap {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            background: rgba(62, 124, 177, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 20px;
            transition: background 0.25s ease, color 0.25s ease;
        }
        .related-card:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
        }
        .related-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink-blue);
            margin-bottom: 8px;
        }
        .related-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .related-card .arrow-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .related-card .arrow-link i {
            transition: transform 0.25s ease;
        }
        .related-card:hover .arrow-link i {
            transform: translateX(4px);
        }

        /* 页脚 */
        .site-footer {
            background: #14293F;
            color: #B7C4D3;
            padding: 64px 0 32px;
            font-size: 14px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-logo .logo-icon {
            width: 32px;
            height: 32px;
            font-size: 15px;
        }
        .footer-logo .logo-text {
            font-size: 18px;
            color: #fff;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.75;
            color: #8FA3BA;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: #8FA3BA;
            font-size: 14px;
            transition: color 0.25s ease, padding-left 0.25s ease;
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #8FA3BA;
            margin-bottom: 10px;
            font-size: 14px;
        }
        .footer-contact p i {
            color: var(--gold);
            font-size: 13px;
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            padding-top: 24px;
            text-align: center;
            color: #6C8199;
            font-size: 13px;
        }

        /* 移动端底部 Tab */
        .mobile-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--white);
            border-top: 1px solid var(--border);
            z-index: 300;
            box-shadow: 0 -4px 20px rgba(31, 58, 95, 0.06);
        }
        .tab-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            color: #9AA8B7;
            font-size: 12px;
            font-weight: 500;
            transition: color 0.2s ease;
        }
        .tab-item i {
            font-size: 20px;
            line-height: 1;
        }
        .tab-item.active,
        .tab-item:hover {
            color: var(--primary);
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .desktop-nav {
                gap: 20px;
                margin-left: 20px;
            }
            .feature-section {
                padding: 72px 0;
            }
            .category-hero {
                padding: 60px 0 64px;
            }
            .category-hero h1 {
                font-size: 38px;
            }
            .related-links {
                padding: 72px 0 80px;
            }
        }

        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .site-header {
                height: 64px;
            }
            .header-inner {
                height: 64px;
            }
            .btn-header {
                padding: 9px 16px;
                font-size: 13px;
            }
            body {
                padding-bottom: 64px;
            }
            .mobile-tab-bar {
                display: flex;
            }
            .category-hero {
                padding: 48px 0 52px;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .category-hero p {
                font-size: 16px;
            }
            .feature-section {
                padding: 60px 0;
            }
            .feature-copy {
                padding-right: 0;
                padding-left: 0;
                margin-bottom: 32px;
            }
            .feature-section:nth-of-type(even) .feature-copy {
                padding-left: 0;
                padding-right: 0;
                margin-bottom: 32px;
            }
            .feature-copy h2 {
                font-size: 28px;
            }
            .related-links {
                padding: 60px 0 72px;
            }
            .section-head h2 {
                font-size: 30px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero p {
                font-size: 15px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .feature-copy h2 {
                font-size: 24px;
            }
            .feature-list li,
            .feature-steps li {
                font-size: 14px;
            }
            .related-card {
                padding: 24px 18px;
            }
            .logo-text {
                font-size: 16px;
            }
        }

/* roulang page: category2 */
:root {
    --primary: #3E7CB1;
    --primary-dark: #33668F;
    --primary-light: #E8F1F8;
    --secondary: #1F3A5F;
    --accent: #D9A441;
    --bg: #F7F9FB;
    --white: #FFFFFF;
    --text: #1F2A3A;
    --text-secondary: #5A6B7C;
    --border: #E4EBF2;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 8px 24px rgba(31,58,95,0.06);
    --shadow-lg: 0 16px 32px rgba(31,58,95,0.12);
    --transition: all 0.25s ease;
    --font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-family);
    background: var(--bg);
    color: var(--text);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

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

a:focus-visible,
.btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

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

h1,
h2,
h3,
h4,
h5,
h6,
p,
ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

h1 {
    font-size: 48px;
    line-height: 1.2;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.02em;
}

h2 {
    font-size: 32px;
    line-height: 1.3;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.01em;
}

h3 {
    font-size: 22px;
    line-height: 1.4;
    font-weight: 700;
    color: var(--text);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 28px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    line-height: 1;
}

.btn i {
    font-size: 14px;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(62, 124, 177, 0.25);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(62, 124, 177, 0.35);
}

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

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

.site-header {
    background: var(--white);
    height: 72px;
    position: sticky;
    top: 0;
    z-index: 200;
    box-shadow: 0 1px 0 rgba(228, 235, 242, 0.9), 0 4px 20px rgba(31, 58, 95, 0.04);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    box-shadow: 0 4px 12px rgba(62, 124, 177, 0.3);
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-link {
    position: relative;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 8px 2px;
    transition: color 0.25s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: width 0.3s ease;
}

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

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

.btn-header {
    height: 42px;
    padding: 0 22px;
    font-size: 14px;
    flex-shrink: 0;
}

.mobile-tabbar {
    display: none;
}

.category-hero {
    position: relative;
    padding: 96px 0 88px;
    background: linear-gradient(to right, rgba(247, 249, 251, 0.94) 0%, rgba(247, 249, 251, 0.7) 50%, rgba(247, 249, 251, 0.3) 100%), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
    border-bottom: 1px solid var(--border);
}

.category-hero-inner {
    max-width: 720px;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 30px;
    margin-bottom: 20px;
    letter-spacing: 0.03em;
}

.hero-tag i {
    font-size: 12px;
}

.category-hero h1 {
    margin-bottom: 18px;
}

.hero-desc {
    font-size: 18px;
    line-height: 1.75;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 600px;
}

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

.feature-blocks-section {
    background: var(--white);
    padding: 96px 0;
}

.feature-block {
    margin-bottom: 88px;
}

.feature-block:last-child {
    margin-bottom: 0;
}

.feature-media {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    position: relative;
    line-height: 0;
}

.feature-media img {
    width: 100%;
    height: 340px;
    object-fit: cover;
    transition: transform 0.4s ease;
    background: var(--primary-light);
}

.feature-block:hover .feature-media img {
    transform: scale(1.03);
}

.feature-media::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(31, 58, 95, 0.18), transparent 50%);
    opacity: 0;
    transition: opacity 0.4s ease;
    border-radius: var(--radius);
    pointer-events: none;
}

.feature-block:hover .feature-media::after {
    opacity: 1;
}

.feature-content {
    padding: 16px 8px;
}

.feature-num {
    display: block;
    font-size: 56px;
    font-weight: 800;
    line-height: 1;
    color: transparent;
    -webkit-text-stroke: 1.5px var(--primary);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.feature-tag {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 20px;
    margin-bottom: 14px;
}

.feature-content h2 {
    margin-bottom: 14px;
}

.feature-content p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 18px;
}

.feature-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 13px;
    padding: 4px 14px;
    border-radius: 20px;
    font-weight: 500;
    transition: var(--transition);
}

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

.cross-links {
    background: var(--bg);
    padding: 96px 0;
    border-top: 1px solid var(--border);
}

.section-header {
    text-align: center;
    margin-bottom: 52px;
}

.section-header h2 {
    margin-bottom: 12px;
}

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

.link-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    display: block;
    height: 100%;
    box-shadow: var(--shadow);
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}

.link-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.link-card:nth-child(2)::before {
    background: var(--accent);
}

.link-card:nth-child(3)::before {
    background: var(--secondary);
}

.link-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(62, 124, 177, 0.35);
}

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

.link-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 20px;
}

.link-card:nth-child(2) .link-icon {
    background: rgba(217, 164, 65, 0.12);
    color: var(--accent);
}

.link-card:nth-child(3) .link-icon {
    background: rgba(31, 58, 95, 0.08);
    color: var(--secondary);
}

.link-card h3 {
    margin-bottom: 8px;
}

.link-card p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.link-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    transition: gap 0.3s ease;
}

.link-card:nth-child(2) .link-more {
    color: var(--accent);
}

.link-card:nth-child(3) .link-more {
    color: var(--secondary);
}

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

.site-footer {
    background: #14293F;
    color: #B8C7D8;
    padding-top: 56px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 44px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--white);
}

.footer-logo .logo-icon {
    background: var(--primary);
}

.footer-logo .logo-text {
    color: var(--white);
}

.footer-desc {
    font-size: 14px;
    line-height: 1.8;
    color: #8BA0B5;
    margin-top: 16px;
    max-width: 360px;
}

.footer-col h4 {
    color: var(--white);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 18px;
}

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

.footer-col ul a {
    font-size: 14px;
    color: #8BA0B5;
    transition: color 0.2s ease, padding-left 0.2s ease;
    display: inline-block;
}

.footer-col ul a:hover {
    color: var(--white);
    padding-left: 4px;
}

.footer-contact p {
    font-size: 14px;
    color: #8BA0B5;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-contact i {
    color: #4A6D8A;
    width: 16px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    text-align: center;
    font-size: 14px;
    color: #6F8298;
}

@media (min-width: 1025px) {
    .desktop-nav {
        display: flex;
    }
    .btn-header {
        display: inline-flex;
    }
    .mobile-tabbar {
        display: none;
    }
    .feature-block {
        margin-bottom: 88px;
    }
}

@media (max-width: 1024px) and (min-width: 641px) {
    body {
        padding-bottom: 0;
    }
    .desktop-nav {
        display: flex;
        gap: 20px;
    }
    .btn-header {
        padding: 0 16px;
        font-size: 13px;
    }
    .mobile-tabbar {
        display: none;
    }
    .category-hero {
        padding: 72px 0 64px;
    }
    .category-hero h1 {
        font-size: 42px;
    }
    .feature-blocks-section,
    .cross-links {
        padding: 72px 0;
    }
    .feature-block {
        margin-bottom: 64px;
    }
    .feature-media img {
        height: 280px;
    }
    .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }
}

@media (max-width: 640px) {
    body {
        padding-bottom: 64px;
    }
    .site-header {
        height: 64px;
    }
    .header-inner {
        height: 64px;
    }
    .desktop-nav,
    .btn-header {
        display: none;
    }
    .mobile-tabbar {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 64px;
        background: var(--white);
        border-top: 1px solid var(--border);
        z-index: 300;
        box-shadow: 0 -4px 16px rgba(31, 58, 95, 0.06);
    }
    .tab-item {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
        font-size: 11px;
        color: var(--text-secondary);
        transition: color 0.2s ease;
    }
    .tab-item i {
        font-size: 17px;
        line-height: 1;
    }
    .tab-item.active {
        color: var(--primary);
    }
    .tab-item:hover {
        color: var(--primary);
    }
    .container {
        padding: 0 16px;
    }
    .category-hero {
        padding: 56px 0 52px;
        background: linear-gradient(to right, rgba(247, 249, 251, 0.9) 0%, rgba(247, 249, 251, 0.6) 80%), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
    }
    .category-hero h1 {
        font-size: 32px;
    }
    .hero-desc {
        font-size: 16px;
    }
    .hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }
    .hero-actions .btn {
        width: 100%;
    }
    .feature-blocks-section,
    .cross-links {
        padding: 56px 0;
    }
    .feature-block {
        margin-bottom: 56px;
    }
    .feature-block:last-child {
        margin-bottom: 0;
    }
    .grid-margin-x {
        margin-left: -8px;
        margin-right: -8px;
    }
    .grid-margin-x > .cell {
        padding-left: 8px;
        padding-right: 8px;
    }
    .feature-media {
        margin-bottom: 8px;
    }
    .feature-media img {
        height: 220px;
    }
    .feature-num {
        font-size: 44px;
    }
    .feature-content {
        padding: 12px 0;
    }
    .feature-content h2 {
        font-size: 24px;
    }
    .feature-content p {
        font-size: 15px;
    }
    .section-header {
        margin-bottom: 36px;
    }
    .section-header h2 {
        font-size: 26px;
    }
    .section-header p {
        font-size: 14px;
        padding: 0 8px;
    }
    .link-card {
        padding: 24px 20px;
        margin-bottom: 16px;
    }
    .link-card:last-child {
        margin-bottom: 0;
    }
    .footer-top {
        grid-template-columns: 1fr;
        gap: 32px;
        padding-bottom: 32px;
    }
    .site-footer {
        padding-top: 40px;
    }
    .footer-desc {
        max-width: 100%;
    }
    .footer-bottom {
        padding: 16px 0;
    }
}

@media (max-width: 1024px) {
    .feature-media img {
        width: 100%;
    }
    .feature-block .grid-x {
        display: flex;
        flex-wrap: wrap;
    }
    .feature-block .cell.large-6,
    .feature-block .cell.medium-6 {
        flex: 0 0 100% !important;
        max-width: 100%;
    }
    .feature-block .feature-media {
        margin-bottom: 16px;
    }
    .link-card {
        margin-bottom: 16px;
    }
    .link-card:last-child {
        margin-bottom: 0;
    }
}

@media (min-width: 641px) and (max-width: 1024px) {
    .link-card {
        padding: 24px 20px;
    }
    .footer-top {
        grid-template-columns: 1fr 1fr;
    }
}