/* roulang page: index */
:root {
            --color-primary: #ff5c28;
            --color-primary-dark: #c23712;
            --color-primary-light: #ffb094;
            --color-secondary: #1a1a1f;
            --color-bg: #fafafb;
            --color-surface: #ffffff;
            --color-text: #1a1a1f;
            --color-text-soft: #5c5c6b;
            --color-text-muted: #91919e;
            --color-border: #e8e8ed;
            --color-border-light: #f0f0f4;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-2xl: 1.5rem;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.1), 0 4px 12px rgba(0, 0, 0, 0.05);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            font-size: 16px;
            letter-spacing: 0.01em;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            transition: all var(--transition-normal);
        }
        button:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
        }
        input {
            font-family: inherit;
        }
        input:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* 导航栏 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition-normal);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .nav-logo {
            font-weight: 800;
            font-size: 1.45rem;
            letter-spacing: -0.02em;
            color: var(--color-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            transition: color var(--transition-fast);
        }
        .nav-logo:hover {
            color: var(--color-primary-dark);
        }
        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, #ff5c28, #ff855b);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 900;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            font-size: 0.925rem;
            color: var(--color-text-soft);
            padding: 0.35rem 0.1rem;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--color-primary);
        }
        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            right: 0;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 3px;
        }
        .nav-cta-btn {
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.55rem 1.4rem;
            border-radius: 2rem;
            border: none;
            white-space: nowrap;
            transition: all var(--transition-normal);
            box-shadow: 0 2px 10px rgba(255, 92, 40, 0.3);
        }
        .nav-cta-btn:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 6px 20px rgba(255, 92, 40, 0.4);
            transform: translateY(-1px);
        }
        .nav-cta-btn:active {
            transform: scale(0.96);
        }

        /* Hero */
        .hero-section {
            position: relative;
            background: linear-gradient(160deg, #1a1a1f 0%, #2d2d38 35%, #3a2a22 70%, #1a1a1f 100%);
            min-height: 620px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-overlay-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.35;
            pointer-events: none;
        }
        .hero-gradient-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 40% 50%, rgba(255, 92, 40, 0.18) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 30%, rgba(255, 133, 91, 0.1) 0%, transparent 50%),
                linear-gradient(180deg, rgba(26, 26, 31, 0.55) 0%, rgba(26, 26, 31, 0.8) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 10;
            max-width: 720px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 500;
            padding: 0.4rem 1.1rem;
            border-radius: 2rem;
            backdrop-filter: blur(6px);
            letter-spacing: 0.02em;
        }
        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #4ade80;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.6);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(74, 222, 128, 0);
            }
        }
        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.03em;
            color: #fff;
        }
        .hero-title .highlight {
            color: #ff855b;
            position: relative;
        }
        .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.75;
        }
        .hero-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: #ff5c28;
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            padding: 0.85rem 2.2rem;
            border-radius: 3rem;
            border: none;
            box-shadow: 0 8px 28px rgba(255, 92, 40, 0.45);
            transition: all var(--transition-normal);
        }
        .hero-btn-primary:hover {
            background: #ff7040;
            box-shadow: 0 14px 36px rgba(255, 92, 40, 0.55);
            transform: translateY(-3px);
        }
        .hero-btn-primary:active {
            transform: scale(0.95);
        }
        .hero-btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.8rem 2rem;
            border-radius: 3rem;
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition-normal);
        }
        .hero-btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-3px);
        }

        /* 板块通用 */
        .section-padding {
            padding: 5rem 1.5rem;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-primary);
            background: rgba(255, 92, 40, 0.08);
            padding: 0.35rem 1rem;
            border-radius: 2rem;
            margin-bottom: 0.75rem;
        }
        .section-title {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--color-text);
            line-height: 1.25;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-soft);
            max-width: 600px;
            line-height: 1.7;
        }

        /* 卡片 */
        .info-card {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            padding: 2rem 1.6rem;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-sm);
            height: 100%;
        }
        .info-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .info-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            flex-shrink: 0;
            transition: transform var(--transition-normal);
        }
        .info-card:hover .card-icon {
            transform: scale(1.08);
        }

        /* 统计数字 */
        .stat-card {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            padding: 1.8rem 1.4rem;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 900;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            line-height: 1;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            margin-top: 0.4rem;
        }

        /* 新闻卡片 */
        .news-card {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            padding: 1.5rem 1.4rem;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .news-date {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }
        .news-title-link {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-text);
            transition: color var(--transition-fast);
            line-height: 1.4;
        }
        .news-title-link:hover {
            color: var(--color-primary);
        }
        .news-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.6;
            flex-grow: 1;
        }
        .news-readmore {
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            transition: gap var(--transition-fast);
        }
        .news-readmore:hover {
            gap: 0.55rem;
        }

        /* FAQ */
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-normal);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 1.3rem 1.5rem;
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-answer {
            padding: 0 1.5rem 1.3rem;
            font-size: 0.925rem;
            color: var(--color-text-soft);
            line-height: 1.75;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-icon {
            transition: transform var(--transition-normal);
            font-size: 0.8rem;
            color: var(--color-text-muted);
            flex-shrink: 0;
        }

        /* CTA区域 */
        .cta-section {
            background: linear-gradient(150deg, #1a1a1f 0%, #2d2d38 50%, #1a1a1f 100%);
            border-radius: var(--radius-2xl);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(255, 92, 40, 0.2) 0%, transparent 55%);
            pointer-events: none;
        }

        /* 页脚 */
        .site-footer {
            background: var(--color-secondary);
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.9rem;
            line-height: 1.8;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition-fast);
        }
        .site-footer a:hover {
            color: #ffb094;
        }
        .footer-brand {
            font-weight: 800;
            font-size: 1.3rem;
            color: #fff;
        }
        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }

        /* 移动端导航 */
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--color-text);
            cursor: pointer;
            padding: 0.3rem;
        }
        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .desktop-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 1rem 1.5rem;
                gap: 0.3rem;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .desktop-nav.open {
                display: flex;
            }
            .nav-link {
                padding: 0.6rem 0;
                font-size: 1rem;
                border-bottom: 1px solid var(--color-border-light);
            }
            .nav-link:last-child {
                border-bottom: none;
            }
            .nav-cta-btn {
                margin-top: 0.5rem;
                align-self: flex-start;
            }
            .section-padding {
                padding: 3rem 1rem;
            }
            .hero-section {
                min-height: 500px;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .stat-number {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 520px) {
            .hero-section {
                min-height: 440px;
            }
            .hero-title {
                font-size: 1.55rem;
            }
            .hero-btn-primary,
            .hero-btn-outline {
                font-size: 0.9rem;
                padding: 0.65rem 1.4rem;
            }
            .info-card {
                padding: 1.4rem 1.1rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .stat-number {
                font-size: 1.5rem;
            }
        }

        /* 服务卡片悬停图片缩放 */
        .card-img-wrap {
            overflow: hidden;
            border-radius: var(--radius-lg);
        }
        .card-img-wrap img {
            transition: transform var(--transition-slow);
        }
        .card-img-wrap:hover img {
            transform: scale(1.06);
        }

        /* 评价卡片 */
        .testimonial-card {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            padding: 1.8rem 1.5rem;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .testimonial-quote {
            font-size: 1.5rem;
            color: var(--color-primary-light);
            line-height: 0.6;
            font-weight: 900;
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a6df5;
            --color-primary-dark: #1456c4;
            --color-primary-light: #4d8ff7;
            --color-accent: #f59e0b;
            --color-accent-dark: #d97706;
            --color-bg: #f8fafc;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-weak: #64748b;
            --color-text-lighter: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-footer: #0f172a;
            --color-footer-text: #cbd5e1;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-2xl: 1.5rem;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.09), 0 4px 10px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.11), 0 8px 16px rgba(0, 0, 0, 0.06);
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

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

        :focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition-smooth), background var(--transition-smooth);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.97);
        }
        .nav-logo {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-text);
            letter-spacing: -0.01em;
            transition: opacity var(--transition-base);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            opacity: 0.82;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 2.4rem;
            height: 2.4rem;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            border-radius: var(--radius-md);
            font-size: 1.15rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .desktop-nav {
            display: none;
            align-items: center;
        }
        @media (min-width: 1024px) {
            .desktop-nav {
                display: flex;
            }
        }
        .nav-link {
            position: relative;
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--color-text-weak);
            padding: 0.35rem 0.15rem;
            transition: color var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: width var(--transition-smooth);
        }
        .nav-link:hover,
        .nav-link.active {
            color: var(--color-primary);
        }
        .nav-link.active::after {
            width: 100%;
        }
        .nav-link:hover::after {
            width: 60%;
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.4rem;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            border-radius: 9999px;
            font-size: 0.875rem;
            font-weight: 600;
            white-space: nowrap;
            transition: all var(--transition-base);
            box-shadow: 0 2px 8px rgba(26, 109, 245, 0.25);
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }
        .nav-cta-btn:hover {
            background: linear-gradient(135deg, var(--color-primary-dark), #0f47a8);
            box-shadow: 0 6px 18px rgba(26, 109, 245, 0.35);
            transform: translateY(-1px);
            color: #fff;
        }
        .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(26, 109, 245, 0.25);
        }
        .mobile-menu-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 2.6rem;
            height: 2.6rem;
            border-radius: var(--radius-md);
            color: var(--color-text);
            font-size: 1.4rem;
            transition: background var(--transition-base);
            flex-shrink: 0;
        }
        @media (min-width: 1024px) {
            .mobile-menu-toggle {
                display: none;
            }
        }
        .mobile-menu-toggle:hover {
            background: var(--color-border-light);
        }
        .mobile-menu-panel {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-lg);
            padding: 1rem 1.25rem 1.5rem;
            flex-direction: column;
            gap: 0.35rem;
            z-index: 99;
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        }
        .mobile-menu-panel.open {
            display: flex;
        }
        .mobile-menu-panel .nav-link {
            padding: 0.7rem 0.8rem;
            font-size: 0.95rem;
            border-radius: var(--radius-sm);
            transition: background var(--transition-base), color var(--transition-base);
        }
        .mobile-menu-panel .nav-link:hover,
        .mobile-menu-panel .nav-link.active {
            background: #eff6ff;
            color: var(--color-primary);
        }
        .mobile-menu-panel .nav-cta-btn {
            margin-top: 0.5rem;
            text-align: center;
            justify-content: center;
            border-radius: var(--radius-md);
            padding: 0.7rem 1.4rem;
        }
        .page-banner {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            overflow: hidden;
            isolation: isolate;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.75) 0%, rgba(15, 23, 42, 0.55) 100%);
            z-index: 1;
        }
        .page-banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 2rem;
        }
        .section-block {
            padding: 4rem 1rem;
        }
        @media (min-width: 768px) {
            .section-block {
                padding: 5rem 2rem;
            }
        }
        @media (min-width: 1024px) {
            .section-block {
                padding: 6rem 2rem;
            }
        }
        .card-story {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            padding: 2rem 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .card-story:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .card-story .card-icon {
            width: 3rem;
            height: 3rem;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            flex-shrink: 0;
        }
        .card-story .card-icon.blue {
            background: #eff6ff;
            color: var(--color-primary);
        }
        .card-story .card-icon.amber {
            background: #fffbeb;
            color: var(--color-accent);
        }
        .card-story .card-icon.emerald {
            background: #ecfdf5;
            color: #10b981;
        }
        .card-story .card-icon.violet {
            background: #f5f3ff;
            color: #7c3aed;
        }
        .timeline {
            position: relative;
            padding-left: 2rem;
            border-left: 3px solid var(--color-border);
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        @media (min-width: 768px) {
            .timeline {
                padding-left: 3rem;
            }
        }
        .timeline-item {
            position: relative;
            padding-left: 1.5rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -2rem;
            top: 0.4rem;
            width: 14px;
            height: 14px;
            background: var(--color-primary);
            border-radius: 50%;
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px var(--color-primary-light);
            transform: translateX(-50%);
        }
        @media (min-width: 768px) {
            .timeline-item::before {
                left: -3rem;
                width: 16px;
                height: 16px;
            }
            .timeline-item {
                padding-left: 2rem;
            }
        }
        .timeline-item .timeline-year {
            font-weight: 700;
            color: var(--color-primary);
            font-size: 1.1rem;
            margin-bottom: 0.3rem;
            letter-spacing: 0.02em;
        }
        .timeline-item .timeline-title {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--color-text);
            margin-bottom: 0.35rem;
        }
        .timeline-item .timeline-desc {
            color: var(--color-text-weak);
            font-size: 0.925rem;
            line-height: 1.65;
        }
        .stat-card {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            line-height: 1.1;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--color-text-weak);
            margin-top: 0.4rem;
            font-weight: 500;
        }
        .testimonial-card {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            padding: 2rem 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            position: relative;
            transition: all var(--transition-smooth);
            height: 100%;
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
        }
        .testimonial-card::before {
            content: '\201C';
            position: absolute;
            top: 1rem;
            left: 1.5rem;
            font-size: 3.5rem;
            color: var(--color-primary);
            opacity: 0.12;
            line-height: 1;
            font-family: Georgia, serif;
            pointer-events: none;
        }
        .testimonial-card .quote-text {
            position: relative;
            z-index: 1;
            font-size: 0.95rem;
            color: var(--color-text);
            line-height: 1.7;
            margin-bottom: 1rem;
            padding-top: 0.5rem;
        }
        .testimonial-card .quote-author {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-text);
        }
        .testimonial-card .quote-role {
            font-size: 0.8rem;
            color: var(--color-text-lighter);
        }
        .cta-block {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 40%, #0f172a 100%);
            border-radius: var(--radius-2xl);
            padding: 3rem 1.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
            isolation: isolate;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(26, 109, 245, 0.18) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }
        .cta-block>* {
            position: relative;
            z-index: 1;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            background: var(--color-primary);
            color: #fff;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-base);
            box-shadow: 0 4px 14px rgba(26, 109, 245, 0.3);
            letter-spacing: 0.02em;
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 8px 22px rgba(26, 109, 245, 0.4);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 3px 10px rgba(26, 109, 245, 0.3);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.8rem;
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        .image-card {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-smooth);
        }
        .image-card:hover {
            box-shadow: var(--shadow-xl);
            transform: translateY(-2px);
        }
        .image-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .image-card:hover img {
            transform: scale(1.03);
        }
        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.3rem 0.85rem;
            background: #eff6ff;
            color: var(--color-primary);
            border-radius: 9999px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .site-footer {
            background: var(--color-footer);
            color: var(--color-footer-text);
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-base);
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
        }
        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.01em;
            line-height: 1.25;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2.2rem;
            }
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-weak);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.65;
        }
        @media (min-width: 768px) {
            .section-subtitle {
                font-size: 1.05rem;
            }
        }
        .animate-fade-up {
            animation: fadeUp 0.7s cubic-bezier(0.4, 0, 0.2, 1) both;
        }
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .delay-100 {
            animation-delay: 0.1s;
        }
        .delay-200 {
            animation-delay: 0.2s;
        }
        .delay-300 {
            animation-delay: 0.3s;
        }
        @media (max-width: 767px) {
            .page-banner {
                min-height: 280px;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .timeline {
                padding-left: 1.5rem;
                gap: 1.5rem;
            }
            .timeline-item {
                padding-left: 1rem;
            }
            .timeline-item::before {
                left: -1.5rem;
                width: 12px;
                height: 12px;
            }
        }
        @media (max-width: 520px) {
            .page-banner {
                min-height: 240px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .card-story {
                padding: 1.5rem 1rem;
            }
            .cta-block {
                padding: 2rem 1rem;
                border-radius: var(--radius-lg);
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1e3a5f;
            --primary-light: #2563eb;
            --primary-lighter: #3b82f6;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg: #f8fafc;
            --bg-alt: #f1f5f9;
            --text: #1e293b;
            --text-secondary: #475569;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --card-bg: #ffffff;
            --footer-bg: #0f172a;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.09), 0 3px 10px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.11), 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.14), 0 8px 24px rgba(0, 0, 0, 0.07);
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input,
        textarea {
            font-family: inherit;
        }

        /* 容器 */
        .section-container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        @media (min-width: 768px) {
            .section-container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        @media (min-width: 1024px) {
            .section-container {
                padding-left: 2.5rem;
                padding-right: 2.5rem;
            }
        }

        /* 板块间距 */
        .section-spacing {
            padding-top: 3.5rem;
            padding-bottom: 3.5rem;
        }

        @media (min-width: 768px) {
            .section-spacing {
                padding-top: 5rem;
                padding-bottom: 5rem;
            }
        }

        @media (min-width: 1024px) {
            .section-spacing {
                padding-top: 6rem;
                padding-bottom: 6rem;
            }
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), background var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.97);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }

        .nav-logo:hover {
            opacity: 0.82;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: var(--radius);
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 1.1rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .desktop-nav {
            display: none;
        }

        @media (min-width: 1024px) {
            .desktop-nav {
                display: flex;
                align-items: center;
            }
        }

        .nav-link {
            position: relative;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 0.35rem 0.15rem;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

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

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

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

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

        .nav-link.active::after {
            width: 100%;
            background: var(--primary-light);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.55rem 1.3rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--primary-light), var(--primary-lighter));
            color: #fff;
            white-space: nowrap;
            transition: all var(--transition);
            box-shadow: 0 2px 10px rgba(37, 99, 235, 0.3);
        }

        .nav-cta-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
            color: #fff;
        }

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

        .mobile-menu-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text);
            font-size: 1.2rem;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .mobile-menu-toggle:hover {
            background: var(--bg-alt);
            border-color: var(--primary-lighter);
            color: var(--primary-light);
        }

        @media (min-width: 1024px) {
            .mobile-menu-toggle {
                display: none;
            }
        }

        /* 移动端菜单面板 */
        .mobile-menu-panel {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-lg);
            padding: 1rem 1.5rem;
            z-index: 999;
        }

        .mobile-menu-panel.open {
            display: block;
        }

        .mobile-menu-panel .nav-link {
            display: block;
            padding: 0.7rem 0.5rem;
            font-size: 1rem;
            border-bottom: 1px solid var(--border-light);
        }

        .mobile-menu-panel .nav-link:last-of-type {
            border-bottom: none;
            margin-bottom: 0.6rem;
        }

        .mobile-menu-panel .nav-cta-btn {
            display: inline-flex;
            margin-top: 0.4rem;
        }

        @media (min-width: 1024px) {
            .mobile-menu-panel {
                display: none !important;
            }
        }

        /* 板块标题 */
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--primary-lighter);
            background: rgba(59, 130, 246, 0.08);
            padding: 0.3rem 0.85rem;
            border-radius: 50px;
            margin-bottom: 0.7rem;
        }

        .section-title {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 0.6rem;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 2.1rem;
            }
        }

        @media (min-width: 1024px) {
            .section-title {
                font-size: 2.4rem;
            }
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 640px;
        }

        /* 卡片 */
        .product-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .product-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: #cbd5e1;
        }

        .product-card-image {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            background: var(--bg-alt);
        }

        .product-card-body {
            padding: 1.3rem 1.3rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .product-card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 0.2rem 0.6rem;
            border-radius: 50px;
            background: rgba(245, 158, 11, 0.1);
            color: var(--accent-dark);
            margin-bottom: 0.5rem;
            width: fit-content;
        }

        .product-card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.4rem;
            line-height: 1.35;
        }

        .product-card-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 1rem;
        }

        .product-card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--primary-light);
            transition: all var(--transition-fast);
        }

        .product-card-link:hover {
            color: var(--primary);
            gap: 0.5rem;
        }

        .product-card-link i {
            font-size: 0.7rem;
            transition: transform var(--transition-fast);
        }

        .product-card-link:hover i {
            transform: translateX(3px);
        }

        /* 特色卡片 */
        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.5rem;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            text-align: center;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-md);
            border-color: #cbd5e1;
            transform: translateY(-2px);
        }

        .feature-icon {
            width: 54px;
            height: 54px;
            border-radius: var(--radius);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(59, 130, 246, 0.15));
            color: var(--primary-light);
        }

        .feature-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.5rem;
        }

        .feature-card-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 统计数字 */
        .stat-block {
            text-align: center;
            padding: 1.2rem;
        }

        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary-light);
            letter-spacing: -0.02em;
            line-height: 1.1;
        }

        @media (min-width: 768px) {
            .stat-number {
                font-size: 2.8rem;
            }
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            background: var(--card-bg);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: #cbd5e1;
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 1.3rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            gap: 0.8rem;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--primary-light);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            transition: all var(--transition);
            color: var(--text-muted);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding-left: 1.3rem;
            padding-right: 1.3rem;
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.75;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-bottom: 1.2rem;
        }

        /* CTA区块 */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), #1a3050);
            border-radius: var(--radius-xl);
            padding: 2.5rem 1.5rem;
            text-align: center;
            color: #fff;
        }

        @media (min-width: 768px) {
            .cta-section {
                padding: 3.5rem 2.5rem;
            }
        }

        .cta-title {
            font-size: 1.7rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            letter-spacing: -0.02em;
        }

        @media (min-width: 768px) {
            .cta-title {
                font-size: 2rem;
            }
        }

        .cta-desc {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 1.5rem;
            line-height: 1.7;
        }

        .cta-btn-large {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.85rem 2.2rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 700;
            background: #fff;
            color: var(--primary);
            transition: all var(--transition);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
        }

        .cta-btn-large:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(0, 0, 0, 0.28);
            color: var(--primary);
        }

        .cta-btn-large:active {
            transform: translateY(0);
        }

        /* 页脚 */
        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.7);
        }

        .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
        }

        .site-footer a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast);
        }

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

        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }

        /* Banner背景覆盖 */
        .banner-overlay {
            position: absolute;
            inset: 0;
            background: rgba(15, 23, 42, 0.65);
            z-index: 1;
        }

        .banner-content {
            position: relative;
            z-index: 2;
        }

        /* 响应式网格补充 */
        @media (max-width: 640px) {
            .product-card-body {
                padding: 1rem 1rem 1.2rem;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .cta-title {
                font-size: 1.4rem;
            }
            .stat-number {
                font-size: 1.9rem;
            }
        }

        /* 焦点可见 */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary-lighter);
            outline-offset: 3px;
            border-radius: 3px;
        }

        /* 分隔线 */
        .divider-light {
            height: 1px;
            background: var(--border);
            border: none;
            margin: 0;
        }

        /* 图文区块 */
        .media-block {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
        }

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

/* roulang page: category3 */
:root {
            --color-primary: #1d4ed8;
            --color-primary-light: #3b82f6;
            --color-primary-dark: #1e40af;
            --color-accent: #f59e0b;
            --color-accent-light: #fbbf24;
            --color-bg: #ffffff;
            --color-bg-alt: #f8fafc;
            --color-bg-dark: #0f172a;
            --color-text: #1e293b;
            --color-text-secondary: #64748b;
            --color-text-light: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #10b981;
            --color-danger: #ef4444;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --max-width: 1280px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background: var(--color-bg);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        input {
            font-family: inherit;
            outline: none;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            border-bottom-color: var(--color-border);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-primary-dark);
            letter-spacing: -0.01em;
            transition: opacity var(--transition-fast);
            flex-shrink: 0;
        }
        .nav-logo:hover {
            opacity: 0.85;
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            font-weight: 700;
        }

        .desktop-nav {
            display: flex;
            align-items: center;
        }
        .nav-link {
            position: relative;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 6px 2px;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .nav-link:hover {
            color: var(--color-primary);
        }
        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--color-primary);
            border-radius: 3px;
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 2px 8px rgba(29, 78, 216, 0.25);
            flex-shrink: 0;
        }
        .nav-cta-btn:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 4px 16px rgba(29, 78, 216, 0.35);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--color-bg-alt);
            color: var(--color-text);
            font-size: 1.25rem;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .mobile-menu-toggle:hover {
            background: var(--color-border-light);
        }

        .mobile-menu-panel {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #fff;
            border-top: 1px solid var(--color-border);
            box-shadow: var(--shadow-lg);
            padding: 16px 20px 20px;
            flex-direction: column;
            gap: 6px;
            z-index: 999;
        }
        .mobile-menu-panel.open {
            display: flex;
        }
        .mobile-menu-panel .nav-link {
            display: block;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            transition: background var(--transition-fast);
        }
        .mobile-menu-panel .nav-link:hover {
            background: var(--color-bg-alt);
        }
        .mobile-menu-panel .nav-link.active {
            background: #eff6ff;
            color: var(--color-primary);
            font-weight: 600;
        }
        .mobile-menu-panel .nav-link.active::after {
            display: none;
        }
        .mobile-menu-panel .nav-cta-btn {
            margin-top: 8px;
            text-align: center;
            justify-content: center;
            border-radius: 24px;
            width: 100%;
            display: flex;
        }

        .page-banner {
            position: relative;
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            padding: 80px 0;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.82) 0%, rgba(29, 78, 216, 0.60) 50%, rgba(15, 23, 42, 0.78) 100%);
            z-index: 1;
        }
        .page-banner-content {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-link {
            color: rgba(255, 255, 255, 0.75);
            transition: color var(--transition-fast);
            font-size: 0.9rem;
        }
        .breadcrumb-link:hover {
            color: #fff;
        }
        .breadcrumb-separator {
            color: rgba(255, 255, 255, 0.45);
            margin: 0 8px;
            font-size: 0.85rem;
        }
        .breadcrumb-current {
            color: rgba(255, 255, 255, 0.9);
            font-weight: 500;
            font-size: 0.9rem;
        }

        .section-title-block {
            margin-bottom: 36px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-primary);
            background: #eff6ff;
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 10px;
        }
        .section-heading {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.02em;
            line-height: 1.3;
        }
        .section-subheading {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            margin-top: 8px;
            line-height: 1.6;
        }

        .news-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .news-card-image {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .news-card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .news-card-date {
            font-size: 0.8rem;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .news-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.45;
            transition: color var(--transition-fast);
        }
        .news-card:hover .news-card-title {
            color: var(--color-primary);
        }
        .news-card-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            flex: 1;
        }
        .news-card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 14px;
            background: #f0f9ff;
            color: var(--color-primary);
            align-self: flex-start;
        }
        .news-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--color-primary);
            transition: gap var(--transition-fast);
            margin-top: auto;
        }
        .news-card-link:hover {
            gap: 10px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 22px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 20px;
        }
        .sidebar-card-title {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-text);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-news-item {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
        }
        .sidebar-news-item:last-child {
            border-bottom: none;
        }
        .sidebar-news-item:hover {
            background: var(--color-bg-alt);
            margin: 0 -8px;
            padding-left: 8px;
            padding-right: 8px;
            border-radius: var(--radius-sm);
        }
        .sidebar-news-thumb {
            width: 64px;
            height: 48px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .sidebar-news-info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-news-title {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }
        .sidebar-news-item:hover .sidebar-news-title {
            color: var(--color-primary);
        }
        .sidebar-news-date {
            font-size: 0.73rem;
            color: var(--color-text-light);
            margin-top: 4px;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-item {
            display: inline-block;
            font-size: 0.78rem;
            padding: 6px 13px;
            border-radius: 18px;
            background: var(--color-bg-alt);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .tag-item:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .highlighted-news {
            background: linear-gradient(135deg, #f0f9ff 0%, #e8f4ff 40%, #fef3c7 100%);
            border-radius: var(--radius-xl);
            padding: 32px 28px;
            display: flex;
            gap: 24px;
            align-items: center;
            box-shadow: var(--shadow-sm);
        }
        .highlighted-news-image {
            width: 280px;
            flex-shrink: 0;
            border-radius: var(--radius-lg);
            aspect-ratio: 4/3;
            object-fit: cover;
        }
        .highlighted-news-content {
            flex: 1;
        }
        .highlighted-news-badge {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 0.75rem;
            padding: 4px 12px;
            border-radius: 14px;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
        }
        .highlighted-news-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.35;
            margin-bottom: 8px;
        }
        .highlighted-news-desc {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 14px;
        }

        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            border: 1px solid var(--color-border-light);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary-light);
        }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.03em;
            line-height: 1;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            margin-top: 6px;
            font-weight: 500;
        }

        .cta-section {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 40%, #4f46e5 100%);
            border-radius: var(--radius-xl);
            padding: 44px 36px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }
        .cta-input-group {
            display: flex;
            max-width: 460px;
            margin: 20px auto 0;
            gap: 0;
            border-radius: 28px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .cta-input-group input {
            flex: 1;
            padding: 13px 20px;
            border: none;
            font-size: 0.95rem;
            color: var(--color-text);
            background: #fff;
            border-radius: 28px 0 0 28px;
        }
        .cta-input-group button {
            padding: 13px 24px;
            background: var(--color-accent);
            color: #1e293b;
            font-weight: 700;
            font-size: 0.95rem;
            border-radius: 0 28px 28px 0;
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
        }
        .cta-input-group button:hover {
            background: var(--color-accent-light);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 16px 20px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question i {
            transition: transform var(--transition-base);
            color: var(--color-text-light);
            font-size: 0.85rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-answer {
            padding: 0 20px 16px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        .site-footer {
            background: var(--color-bg-dark);
            color: #fff;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }
        .site-footer a:hover {
            color: rgba(255, 255, 255, 0.9);
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
        }
        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }

        @media (max-width: 1024px) {
            .desktop-nav {
                gap: 14px !important;
            }
            .desktop-nav .nav-link {
                font-size: 0.85rem;
            }
            .desktop-nav .nav-cta-btn {
                padding: 7px 14px;
                font-size: 0.82rem;
            }
            .nav-logo {
                font-size: 1.15rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }
            .highlighted-news {
                flex-direction: column;
            }
            .highlighted-news-image {
                width: 100%;
                aspect-ratio: 16/9;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .page-banner {
                padding: 56px 0;
            }
            .section-heading {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .nav-logo {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
            .page-banner {
                padding: 44px 0;
            }
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .highlighted-news {
                padding: 20px 16px;
                flex-direction: column;
            }
            .highlighted-news-image {
                width: 100%;
                aspect-ratio: 16/9;
            }
            .highlighted-news-title {
                font-size: 1.2rem;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .stat-card {
                padding: 16px 12px;
            }
            .stat-number {
                font-size: 1.7rem;
            }
            .cta-section {
                padding: 28px 18px;
                border-radius: var(--radius-lg);
            }
            .cta-input-group {
                flex-direction: column;
                border-radius: var(--radius-md);
                gap: 0;
                box-shadow: none;
            }
            .cta-input-group input {
                border-radius: var(--radius-md) var(--radius-md) 0 0;
                text-align: center;
            }
            .cta-input-group button {
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                width: 100%;
                text-align: center;
                justify-content: center;
            }
            .section-heading {
                font-size: 1.4rem;
            }
            .news-card-body {
                padding: 14px 16px 18px;
            }
            .news-card-title {
                font-size: 1rem;
            }
            .sidebar-card {
                padding: 16px;
            }
        }

        @media (max-width: 520px) {
            .site-header .max-w-7xl {
                padding-left: 12px;
                padding-right: 12px;
            }
            .nav-logo {
                font-size: 1rem;
                gap: 6px;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.8rem;
            }
            .page-banner {
                padding: 32px 0;
            }
            .page-banner h1 {
                font-size: 1.3rem;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .stat-label {
                font-size: 0.75rem;
            }
            .highlighted-news-title {
                font-size: 1.05rem;
            }
            .highlighted-news-desc {
                font-size: 0.85rem;
            }
            .section-heading {
                font-size: 1.25rem;
            }
            .news-card-body {
                padding: 12px 14px 16px;
            }
        }

/* roulang page: category4 */
:root {
            --color-brand-600: #2563eb;
            --color-brand-700: #1d4ed8;
            --color-brand-800: #1e40af;
            --color-accent-500: #f59e0b;
            --color-accent-600: #d97706;
            --color-bg: #f8fafc;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-muted: #64748b;
            --color-text-weak: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 4px 10px -6px rgba(0, 0, 0, 0.04);
            --shadow-xl: 0 20px 40px -8px rgba(0, 0, 0, 0.1), 0 8px 16px -8px rgba(0, 0, 0, 0.06);
            --transition-fast: 0.15s ease;
            --transition-normal: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input,
        textarea,
        select {
            font-family: inherit;
        }

        /* 容器 */
        .container-custom {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 640px) {
            .container-custom {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container-custom {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ========== 导航样式 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition-normal);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-brand-700);
            text-decoration: none;
            letter-spacing: -0.01em;
            transition: opacity var(--transition-fast);
            white-space: nowrap;
        }

        .nav-logo:hover {
            opacity: 0.85;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 2.25rem;
            height: 2.25rem;
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .desktop-nav {
            display: none;
            align-items: center;
            gap: 1.5rem;
        }

        @media (min-width: 1024px) {
            .desktop-nav {
                display: flex;
                gap: 2rem;
            }
        }

        .nav-link {
            position: relative;
            font-size: 0.925rem;
            font-weight: 500;
            color: #475569;
            text-decoration: none;
            padding: 0.35rem 0;
            transition: color var(--transition-fast);
            white-space: nowrap;
            letter-spacing: -0.005em;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-brand-600);
            border-radius: 2px;
            transition: width var(--transition-normal);
        }

        .nav-link:hover {
            color: var(--color-brand-600);
        }

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

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

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

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.35rem;
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            color: #fff;
            border-radius: 9999px;
            font-size: 0.875rem;
            font-weight: 600;
            text-decoration: none;
            white-space: nowrap;
            transition: all var(--transition-normal);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
            letter-spacing: -0.005em;
        }

        .nav-cta-btn:hover {
            background: linear-gradient(135deg, #1d4ed8, #1e40af);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.4);
            transform: translateY(-1px);
        }

        .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
        }

        /* 移动端菜单按钮 */
        .mobile-menu-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 2.5rem;
            height: 2.5rem;
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            color: #475569;
            font-size: 1.25rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .mobile-menu-toggle:hover {
            background: #f8fafc;
            border-color: #cbd5e1;
        }

        @media (min-width: 1024px) {
            .mobile-menu-toggle {
                display: none;
            }
        }

        /* 移动端菜单面板 */
        .mobile-menu-panel {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-lg);
            padding: 1rem 1rem 1.25rem;
            z-index: 999;
            flex-direction: column;
            gap: 0.5rem;
            animation: slideDown 0.25s ease;
        }

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

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .mobile-menu-panel .nav-link {
            display: block;
            padding: 0.7rem 0.75rem;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            transition: background var(--transition-fast), color var(--transition-fast);
        }

        .mobile-menu-panel .nav-link:hover {
            background: #f1f5f9;
            color: var(--color-brand-600);
        }

        .mobile-menu-panel .nav-link.active {
            background: #eff6ff;
            color: var(--color-brand-600);
            font-weight: 600;
        }

        .mobile-menu-panel .nav-cta-btn {
            display: block;
            text-align: center;
            margin-top: 0.5rem;
            border-radius: 9999px;
        }

        /* ========== 板块通用 ========== */
        .section-padding {
            padding: 3.5rem 0;
        }

        @media (min-width: 768px) {
            .section-padding {
                padding: 5rem 0;
            }
        }

        @media (min-width: 1024px) {
            .section-padding {
                padding: 6rem 0;
            }
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: #0f172a;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 2rem;
            }
        }

        @media (min-width: 1024px) {
            .section-title {
                font-size: 2.25rem;
            }
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            line-height: 1.8;
            max-width: 640px;
        }

        @media (min-width: 768px) {
            .section-subtitle {
                font-size: 1.075rem;
            }
        }

        /* ========== Hero Banner ========== */
        .hero-banner {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-color: #0f172a;
        }

        @media (min-width: 768px) {
            .hero-banner {
                min-height: 480px;
            }
        }

        @media (min-width: 1024px) {
            .hero-banner {
                min-height: 540px;
            }
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.45;
            z-index: 1;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.7) 0%, rgba(15, 23, 42, 0.85) 100%);
            z-index: 2;
        }

        .hero-content {
            position: relative;
            z-index: 3;
            width: 100%;
            padding: 3rem 0;
        }

        /* ========== 统计卡片 ========== */
        .stat-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 1.75rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-xl);
            transform: translateY(-3px);
            border-color: #dbeafe;
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-brand-600);
            letter-spacing: -0.03em;
            line-height: 1.1;
        }

        @media (min-width: 768px) {
            .stat-number {
                font-size: 2.75rem;
            }
        }

        @media (min-width: 1024px) {
            .stat-number {
                font-size: 3rem;
            }
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-top: 0.5rem;
            font-weight: 500;
        }

        /* ========== 合作模式卡片 ========== */
        .mode-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .mode-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: #bfdbfe;
            transform: translateY(-2px);
        }

        .mode-icon-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 3.25rem;
            height: 3.25rem;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, #eff6ff, #dbeafe);
            color: var(--color-brand-600);
            font-size: 1.35rem;
            margin-bottom: 1.25rem;
            flex-shrink: 0;
        }

        /* ========== 合作伙伴卡片 ========== */
        .partner-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            height: 100%;
        }

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

        .partner-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        @media (min-width: 768px) {
            .partner-card-img {
                height: 220px;
            }
        }

        /* ========== 流程步骤 ========== */
        .step-item {
            display: flex;
            gap: 1.25rem;
            align-items: flex-start;
            position: relative;
        }

        .step-number {
            flex-shrink: 0;
            width: 3rem;
            height: 3rem;
            border-radius: 50%;
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.15rem;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }

        .step-connector {
            position: absolute;
            left: 1.4rem;
            top: 3.5rem;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, #bfdbfe, #e2e8f0);
            border-radius: 2px;
        }

        /* ========== CTA区块 ========== */
        .cta-section {
            background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 40%, #2563eb 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.04) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        /* ========== FAQ ========== */
        .faq-item {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-sm);
        }

        .faq-item:hover {
            border-color: #dbeafe;
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 1.25rem 1.5rem;
            background: transparent;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            color: #1e293b;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            transition: color var(--transition-fast);
            letter-spacing: -0.005em;
        }

        .faq-question:hover {
            color: var(--color-brand-600);
        }

        .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition-normal);
            color: #94a3b8;
            font-size: 0.85rem;
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--color-brand-600);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-normal);
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
        }

        .faq-answer-inner {
            padding: 0 1.5rem 1.25rem;
            color: #475569;
            line-height: 1.8;
            font-size: 0.95rem;
        }

        /* ========== 页脚样式 ========== */
        .site-footer {
            background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
            color: #fff;
        }

        .footer-brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
        }

        .site-footer a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .site-footer a:hover {
            color: rgba(255, 255, 255, 0.9);
        }

        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* ========== 标签/徽章 ========== */
        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.3rem 0.8rem;
            border-radius: 9999px;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: -0.005em;
        }

        .badge-blue {
            background: #eff6ff;
            color: #2563eb;
        }

        .badge-accent {
            background: #fffbeb;
            color: #d97706;
        }

        .badge-green {
            background: #f0fdf4;
            color: #16a34a;
        }

        /* ========== 按钮 ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.75rem;
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            color: #fff;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 0.95rem;
            text-decoration: none;
            border: none;
            cursor: pointer;
            transition: all var(--transition-normal);
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
            letter-spacing: -0.005em;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #1d4ed8, #1e40af);
            box-shadow: 0 6px 22px rgba(37, 99, 235, 0.45);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 3px 10px rgba(37, 99, 235, 0.25);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.65rem 1.65rem;
            background: transparent;
            color: #2563eb;
            border: 2px solid #2563eb;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 0.95rem;
            text-decoration: none;
            cursor: pointer;
            transition: all var(--transition-normal);
            letter-spacing: -0.005em;
            white-space: nowrap;
        }

        .btn-outline:hover {
            background: #2563eb;
            color: #fff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.75rem;
            background: #fff;
            color: #1d4ed8;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 0.95rem;
            text-decoration: none;
            cursor: pointer;
            transition: all var(--transition-normal);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
            letter-spacing: -0.005em;
            white-space: nowrap;
            border: none;
        }

        .btn-white:hover {
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
            transform: translateY(-2px);
        }

        .btn-white:active {
            transform: translateY(0);
        }

        /* ========== 焦点可见 ========== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid #2563eb;
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ========== 响应式补充 ========== */
        @media (max-width: 767px) {
            .section-title {
                font-size: 1.5rem;
            }

            .stat-number {
                font-size: 2rem;
            }

            .hero-banner {
                min-height: 340px;
            }

            .step-connector {
                left: 1.25rem;
            }

            .step-number {
                width: 2.5rem;
                height: 2.5rem;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .hero-banner {
                min-height: 300px;
            }

            .stat-card {
                padding: 1.25rem 1rem;
            }

            .stat-number {
                font-size: 1.75rem;
            }

            .mode-card {
                padding: 1.5rem 1.15rem;
            }

            .faq-question {
                padding: 1rem 1.15rem;
                font-size: 0.9rem;
            }

            .faq-answer-inner {
                padding: 0 1.15rem 1rem;
                font-size: 0.875rem;
            }
        }

/* roulang page: category5 */
:root {
            --brand-600: #2563eb;
            --brand-700: #1d4ed8;
            --brand-800: #1e40af;
            --accent-500: #f97316;
            --accent-600: #ea580c;
            --surface: #f8fafc;
            --card: #ffffff;
            --text: #1e293b;
            --text-soft: #475569;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius-xl: 0.875rem;
            --radius-2xl: 1rem;
            --radius-3xl: 1.25rem;
            --shadow-card: 0 1px 3px 0 rgba(0, 0, 0, 0.04), 0 4px 16px 0 rgba(0, 0, 0, 0.05);
            --shadow-card-hover: 0 4px 12px 0 rgba(0, 0, 0, 0.06), 0 12px 32px 0 rgba(0, 0, 0, 0.08);
            --shadow-nav: 0 1px 3px 0 rgba(0, 0, 0, 0.03), 0 2px 12px 0 rgba(0, 0, 0, 0.04);
            --transition-base: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            line-height: 1.7;
            background-color: #f8fafc;
            color: #1e293b;
            margin: 0;
            padding: 0;
            min-height: 100vh;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input {
            font-family: inherit;
        }
        :focus-visible {
            outline: 2px solid var(--brand-600);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* Site Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.7);
            box-shadow: var(--shadow-nav);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.97);
            box-shadow: 0 2px 8px 0 rgba(0, 0, 0, 0.06), 0 6px 24px 0 rgba(0, 0, 0, 0.05);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.25rem;
            color: #1e293b;
            letter-spacing: -0.01em;
            transition: opacity var(--transition-base);
            white-space: nowrap;
        }
        .nav-logo:hover {
            opacity: 0.82;
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
            color: #fff;
            font-size: 1.1rem;
            font-weight: 800;
            letter-spacing: 0;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
        }
        .nav-link {
            font-size: 0.9rem;
            font-weight: 500;
            color: #475569;
            padding: 0.35rem 0.15rem;
            position: relative;
            transition: color var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: #2563eb;
            border-radius: 1px;
            transition: width var(--transition-base);
        }
        .nav-link:hover {
            color: #1e293b;
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: #2563eb;
            font-weight: 600;
        }
        .nav-link.active::after {
            width: 100%;
            background: #2563eb;
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.5rem 1.25rem;
            border-radius: 9999px;
            font-size: 0.875rem;
            font-weight: 600;
            background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
            color: #fff;
            white-space: nowrap;
            transition: all var(--transition-base);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
            letter-spacing: 0.01em;
        }
        .nav-cta-btn:hover {
            background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
            transform: translateY(-1px);
            color: #fff;
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.35rem;
            color: #475569;
            padding: 0.4rem;
            border-radius: 8px;
            transition: all var(--transition-base);
            cursor: pointer;
            line-height: 1;
        }
        .mobile-menu-toggle:hover {
            color: #1e293b;
            background: #f1f5f9;
        }
        .mobile-nav-panel {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid #e2e8f0;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
            padding: 1rem 1.25rem;
            flex-direction: column;
            gap: 0.5rem;
            z-index: 99;
        }
        .mobile-nav-panel.open {
            display: flex;
        }
        .mobile-nav-panel a {
            display: block;
            padding: 0.65rem 0.75rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: #475569;
            border-radius: 8px;
            transition: all var(--transition-base);
        }
        .mobile-nav-panel a:hover,
        .mobile-nav-panel a.active {
            background: #eff6ff;
            color: #2563eb;
            font-weight: 600;
        }
        .mobile-nav-panel .mobile-cta {
            display: block;
            text-align: center;
            margin-top: 0.35rem;
            padding: 0.7rem 1rem;
            border-radius: 9999px;
            font-weight: 600;
            background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
            color: #fff;
            font-size: 0.9rem;
            transition: all var(--transition-base);
        }
        .mobile-nav-panel .mobile-cta:hover {
            background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
            color: #fff;
        }

        @media (max-width: 1024px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
        }
        @media (min-width: 1025px) {
            .mobile-nav-panel {
                display: none !important;
            }
            .mobile-menu-toggle {
                display: none !important;
            }
        }

        /* Section spacing */
        .section-padding {
            padding: 3.5rem 0;
        }
        @media (min-width: 768px) {
            .section-padding {
                padding: 5rem 0;
            }
        }

        /* Card base */
        .card-base {
            background: #fff;
            border-radius: var(--radius-2xl);
            box-shadow: var(--shadow-card);
            border: 1px solid #f1f5f9;
            transition: all var(--transition-base);
            overflow: hidden;
        }
        .card-base:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: #e2e8f0;
        }

        /* FAQ details */
        .faq-details {
            background: #fff;
            border-radius: var(--radius-xl);
            border: 1px solid #e2e8f0;
            margin-bottom: 0.75rem;
            transition: all var(--transition-base);
            overflow: hidden;
        }
        .faq-details[open] {
            border-color: #bfdbfe;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.06);
        }
        .faq-details summary {
            padding: 1.1rem 1.25rem;
            font-weight: 600;
            font-size: 0.95rem;
            color: #1e293b;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            user-select: none;
            transition: all var(--transition-base);
            letter-spacing: 0.01em;
        }
        .faq-details summary::-webkit-details-marker {
            display: none;
        }
        .faq-details summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.85rem;
            color: #94a3b8;
            flex-shrink: 0;
            transition: transform var(--transition-base);
        }
        .faq-details[open] summary::after {
            transform: rotate(180deg);
            color: #2563eb;
        }
        .faq-details[open] summary {
            color: #2563eb;
            background: #f8fafc;
        }
        .faq-details .faq-answer {
            padding: 0 1.25rem 1.25rem 1.25rem;
            color: #475569;
            font-size: 0.9rem;
            line-height: 1.8;
            letter-spacing: 0.01em;
        }

        /* Search input */
        .search-box-wrapper {
            position: relative;
            max-width: 560px;
            width: 100%;
        }
        .search-box-wrapper input {
            width: 100%;
            padding: 0.85rem 3.2rem 0.85rem 1.25rem;
            border-radius: 9999px;
            border: 2px solid #e2e8f0;
            font-size: 0.95rem;
            background: #fff;
            color: #1e293b;
            transition: all var(--transition-base);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .search-box-wrapper input:focus {
            outline: none;
            border-color: #2563eb;
            box-shadow: 0 0 0 6px rgba(37, 99, 235, 0.07), 0 4px 16px rgba(0, 0, 0, 0.06);
        }
        .search-box-wrapper .search-icon-btn {
            position: absolute;
            right: 6px;
            top: 50%;
            transform: translateY(-50%);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #2563eb;
            color: #fff;
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.95rem;
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .search-box-wrapper .search-icon-btn:hover {
            background: #1d4ed8;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
        }

        /* Banner overlay */
        .banner-overlay {
            position: relative;
            overflow: hidden;
        }
        .banner-overlay::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.72) 0%, rgba(15, 23, 42, 0.55) 40%, rgba(15, 23, 42, 0.7) 100%);
            z-index: 1;
            pointer-events: none;
        }
        .banner-overlay>* {
            position: relative;
            z-index: 2;
        }

        /* Quick category card */
        .quick-cat-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.6rem;
            padding: 1.5rem 1rem;
            background: #fff;
            border-radius: var(--radius-xl);
            border: 1px solid #f1f5f9;
            box-shadow: var(--shadow-card);
            text-align: center;
            cursor: pointer;
            transition: all var(--transition-base);
            text-decoration: none;
            color: inherit;
        }
        .quick-cat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: #bfdbfe;
        }
        .quick-cat-card .cat-icon-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
            transition: all var(--transition-base);
        }
        .quick-cat-card:hover .cat-icon-circle {
            transform: scale(1.08);
        }

        /* Footer */
        .site-footer {
            background: #0f172a;
            color: #e2e8f0;
        }
        .site-footer a {
            color: #94a3b8;
            transition: color var(--transition-base);
        }
        .site-footer a:hover {
            color: #e2e8f0;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
        }
        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* Breadcrumb */
        .breadcrumb-link {
            color: #94a3b8;
            transition: color var(--transition-base);
            font-size: 0.85rem;
        }
        .breadcrumb-link:hover {
            color: #2563eb;
        }

        /* Guide card image */
        .guide-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius-xl) var(--radius-xl) 0 0;
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-base:hover .guide-card-img {
            transform: scale(1.03);
        }

        /* Pulse dot */
        .pulse-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #22c55e;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(34, 197, 94, 0);
            }
        }

        @media (max-width: 640px) {
            .guide-card-img {
                height: 140px;
            }
            .faq-details summary {
                font-size: 0.875rem;
                padding: 0.9rem 1rem;
            }
            .faq-details .faq-answer {
                padding: 0 1rem 1rem 1rem;
                font-size: 0.85rem;
            }
        }

/* roulang page: category6 */
:root {
            --color-brand-600: #2563eb;
            --color-brand-700: #1d4ed8;
            --color-brand-800: #1e40af;
            --color-accent-500: #f59e0b;
            --color-accent-600: #d97706;
            --color-surface-light: #f8fafc;
            --color-surface: #f1f5f9;
            --color-text: #1e293b;
            --color-text-soft: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-sm: 0.5rem;
            --radius: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-2xl: 1.5rem;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.08), 0 4px 6px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 8px 10px rgba(0, 0, 0, 0.05);
            --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: #ffffff;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input,
        textarea,
        select {
            font-family: inherit;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.625rem;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-brand-700);
            letter-spacing: -0.01em;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }

        .nav-logo:hover {
            opacity: 0.85;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 2.25rem;
            height: 2.25rem;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            color: #ffffff;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        @media (max-width: 1023px) {
            .desktop-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 0.75rem 1rem;
                border-top: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                z-index: 99;
                max-height: 75vh;
                overflow-y: auto;
            }
            .desktop-nav.mobile-open {
                display: flex;
            }
            .desktop-nav .nav-link {
                padding: 0.75rem 1rem;
                border-radius: var(--radius-sm);
                width: 100%;
                text-align: left;
            }
            .desktop-nav .nav-cta-btn {
                margin: 0.5rem 0.75rem;
                width: calc(100% - 1.5rem);
                text-align: center;
                justify-content: center;
            }
        }

        @media (min-width: 1024px) {
            .desktop-nav {
                display: flex;
                position: static;
                flex-direction: row;
                background: transparent;
                box-shadow: none;
                padding: 0;
                border: none;
                max-height: none;
                overflow: visible;
            }
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 0.875rem;
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--color-text-soft);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
            letter-spacing: 0.01em;
        }

        .nav-link:hover {
            color: var(--color-brand-600);
            background: #eff6ff;
        }

        .nav-link.active {
            color: var(--color-brand-700);
            font-weight: 600;
            background: #eff6ff;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 1.25rem;
            height: 3px;
            border-radius: 999px;
            background: var(--color-brand-600);
        }

        @media (max-width: 1023px) {
            .nav-link.active::after {
                display: none;
            }
            .nav-link.active {
                border-left: 3px solid var(--color-brand-600);
                border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            }
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            padding: 0.55rem 1.35rem;
            font-size: 0.9rem;
            font-weight: 600;
            color: #ffffff;
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            border-radius: 999px;
            white-space: nowrap;
            transition: all var(--transition);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
            letter-spacing: 0.02em;
            margin-left: 0.5rem;
        }

        .nav-cta-btn:hover {
            background: linear-gradient(135deg, #1d4ed8, #1e40af);
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
            transform: translateY(-1px);
        }

        .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            padding: 0.5rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .mobile-menu-toggle:hover {
            color: var(--color-brand-600);
            background: #f1f5f9;
        }

        @media (max-width: 1023px) {
            .mobile-menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
        }

        /* Section共通 */
        .section-py {
            padding: 4rem 1rem;
        }

        @media (min-width: 768px) {
            .section-py {
                padding: 5rem 2rem;
            }
        }
        @media (min-width: 1024px) {
            .section-py {
                padding: 6rem 2rem;
            }
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.02em;
            line-height: 1.3;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 2.25rem;
            }
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-soft);
            max-width: 640px;
            line-height: 1.7;
        }

        @media (min-width: 768px) {
            .section-subtitle {
                font-size: 1.1rem;
            }
        }

        /* Card共通 */
        .card-base {
            background: #ffffff;
            border-radius: var(--radius-xl);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition);
        }

        .card-base:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: #cbd5e1;
        }

        .card-elevated {
            background: #ffffff;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: all var(--transition);
        }

        .card-elevated:hover {
            box-shadow: var(--shadow-xl);
            transform: translateY(-3px);
        }

        /* Badge & Tag */
        .badge-accent {
            display: inline-flex;
            align-items: center;
            padding: 0.3rem 0.75rem;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 999px;
            background: #fef3c7;
            color: #92400e;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .badge-brand {
            display: inline-flex;
            align-items: center;
            padding: 0.3rem 0.75rem;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 999px;
            background: #dbeafe;
            color: #1e40af;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .tag-outline {
            display: inline-flex;
            align-items: center;
            padding: 0.35rem 0.85rem;
            font-size: 0.825rem;
            font-weight: 500;
            border-radius: 999px;
            border: 1.5px solid var(--color-border);
            color: var(--color-text-soft);
            background: #ffffff;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .tag-outline:hover {
            border-color: var(--color-brand-400);
            color: var(--color-brand-600);
            background: #eff6ff;
        }

        /* Button */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.7rem 1.75rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: #ffffff;
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            border: none;
            border-radius: 999px;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #1d4ed8, #1e40af);
            box-shadow: 0 6px 18px rgba(37, 99, 235, 0.35);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(37, 99, 235, 0.2);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.65rem 1.6rem;
            font-size: 0.925rem;
            font-weight: 600;
            color: var(--color-brand-600);
            background: #ffffff;
            border: 2px solid var(--color-brand-300);
            border-radius: 999px;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-outline:hover {
            border-color: var(--color-brand-500);
            background: #eff6ff;
            transform: translateY(-1px);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        /* Footer */
        .site-footer {
            background: #0f172a;
            color: #e2e8f0;
        }

        .footer-brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: -0.01em;
        }

        .site-footer ul li a {
            color: #94a3b8;
            transition: color var(--transition-fast);
        }
        .site-footer ul li a:hover {
            color: #e2e8f0;
        }

        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* Hero内页 */
        .inner-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 380px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .inner-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(30, 58, 138, 0.7) 50%, rgba(15, 23, 42, 0.8) 100%);
            z-index: 1;
        }

        .inner-hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        @media (max-width: 640px) {
            .inner-hero {
                min-height: 280px;
            }
        }

        /* Focus可访问性 */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-brand-500);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* 职位卡片hover */
        .job-card {
            transition: all var(--transition);
            cursor: pointer;
        }
        .job-card:hover {
            box-shadow: var(--shadow-xl);
            transform: translateY(-3px);
            border-color: var(--color-brand-300);
        }

        /* 步骤连接线 */
        @media (min-width: 768px) {
            .step-connector::after {
                content: '';
                position: absolute;
                top: 2.25rem;
                left: calc(50% + 2rem);
                width: calc(100% - 4rem);
                height: 2px;
                background: linear-gradient(90deg, #2563eb, #93c5fd, #e2e8f0);
                z-index: 0;
            }
            .step-connector:last-child::after {
                display: none;
            }
        }