/* roulang page: index */
:root {
            --primary: #1A0F2E;
            --primary-dark: #120A20;
            --accent: #18E0C8;
            --accent-dim: rgba(24, 224, 200, 0.1);
            --highlight: #FF5A5F;
            --highlight-dark: #E84A4F;
            --bg-warm: #F7F5F1;
            --bg-white: #FFFFFF;
            --bg-dark-section: #2B1B42;
            --text-main: #1F1B2E;
            --text-secondary: #6E6882;
            --text-on-dark: #FFFFFF;
            --text-on-dark-secondary: #D9D3E8;
            --border-light: rgba(26, 15, 46, 0.08);
            --border-accent: rgba(24, 224, 200, 0.45);
            --radius-card: 16px;
            --radius-btn: 50px;
            --shadow-card: 0 12px 30px rgba(26, 15, 46, 0.10);
            --shadow-card-hover: 0 18px 40px rgba(26, 15, 46, 0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto", -apple-system, sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            color: var(--text-main);
            background-color: var(--bg-warm);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--text-main);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: 1200px;
        }

        /* ========== 顶部信息条 ========== */
        .top-bar {
            background-color: var(--primary);
            color: var(--text-on-dark-secondary);
            font-size: 12.5px;
            min-height: 36px;
            display: flex;
            align-items: center;
            position: relative;
            z-index: 1050;
        }
        .top-bar .top-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px 16px;
            padding: 6px 12px;
        }
        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-on-dark-secondary);
        }
        .top-bar-left .fa-solid,
        .top-bar-left .fa-regular {
            color: var(--accent);
            font-size: 12px;
        }
        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .top-bar-right a {
            color: var(--text-on-dark-secondary);
            font-size: 12.5px;
            transition: var(--transition);
        }
        .top-bar-right a:hover {
            color: var(--accent);
        }
        .top-bar-divider {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, 0.2);
        }

        /* ========== 主导航 ========== */
        .main-nav {
            background: var(--bg-white);
            min-height: 72px;
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1040;
            box-shadow: 0 4px 20px rgba(26, 15, 46, 0.06);
        }
        .main-nav .navbar {
            padding: 0;
            min-height: 72px;
        }
        .main-nav .navbar-brand {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .main-nav .navbar-brand .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary) 0%, #3D2A5C 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 4px 12px rgba(26, 15, 46, 0.25);
            flex-shrink: 0;
        }
        .main-nav .navbar-brand .brand-text {
            line-height: 1.2;
        }
        .main-nav .navbar-brand .brand-sub {
            font-size: 0.7rem;
            font-weight: 400;
            color: var(--text-secondary);
            letter-spacing: 1.2px;
            display: block;
        }
        .main-nav .navbar-nav {
            gap: 4px;
        }
        .main-nav .nav-link {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-main);
            padding: 10px 14px !important;
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
        }
        .main-nav .nav-link:hover {
            color: var(--accent);
            background: var(--accent-dim);
        }
        .main-nav .nav-link.active {
            color: var(--highlight);
            background: rgba(255, 90, 95, 0.08);
        }
        .main-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--highlight);
            border-radius: 3px;
        }
        .main-nav .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 10px;
            padding: 8px 12px;
            color: var(--primary);
        }
        .main-nav .navbar-toggler:focus {
            box-shadow: 0 0 0 3px var(--accent-dim);
        }
        .main-nav .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            min-height: 680px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center center;
            isolation: isolate;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 15, 46, 0.82) 0%, rgba(26, 15, 46, 0.55) 45%, rgba(26, 15, 46, 0.75) 100%);
            z-index: -1;
        }
        .hero .hero-inner {
            padding: 60px 0;
            width: 100%;
        }
        .hero .hero-series-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 32px;
        }
        .hero .series-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            color: var(--text-on-dark);
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: var(--transition);
            cursor: pointer;
        }
        .hero .series-pill:hover {
            background: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            transform: translateY(-2px);
        }
        .hero .series-pill .fa-solid {
            font-size: 11px;
            opacity: 0.8;
        }
        .hero h1 {
            font-size: clamp(2rem, 4.5vw, 3.5rem);
            font-weight: 700;
            color: var(--text-on-dark);
            line-height: 1.25;
            max-width: 800px;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .hero h1 .highlight {
            color: var(--highlight);
        }
        .hero h1 .accent {
            color: var(--accent);
        }
        .hero .hero-desc {
            font-size: 1.05rem;
            color: var(--text-on-dark-secondary);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .hero .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 42px;
        }
        .hero .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero .hero-stat {
            text-align: left;
        }
        .hero .hero-stat .stat-num {
            font-family: var(--font-num);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero .hero-stat .stat-label {
            font-size: 0.82rem;
            color: var(--text-on-dark-secondary);
        }

        /* ========== 按钮 ========== */
        .btn-custom {
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 12px 28px;
            transition: var(--transition);
            border: 2px solid transparent;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
        }
        .btn-custom:hover {
            transform: translateY(-2px) scale(1.02);
        }
        .btn-custom:active {
            transform: scale(0.98);
        }
        .btn-primary-custom {
            background: var(--highlight);
            color: var(--text-on-dark);
            border-color: var(--highlight);
            box-shadow: 0 8px 24px rgba(255, 90, 95, 0.35);
        }
        .btn-primary-custom:hover {
            background: var(--highlight-dark);
            border-color: var(--highlight-dark);
            color: var(--text-on-dark);
            box-shadow: 0 12px 30px rgba(255, 90, 95, 0.45);
        }
        .btn-outline-accent {
            background: transparent;
            color: var(--accent);
            border-color: var(--accent);
        }
        .btn-outline-accent:hover {
            background: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
        }
        .btn-outline-light-custom {
            background: rgba(255, 255, 255, 0.12);
            color: var(--text-on-dark);
            border-color: rgba(255, 255, 255, 0.35);
        }
        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, 0.25);
            border-color: rgba(255, 255, 255, 0.6);
            color: var(--text-on-dark);
        }
        .btn-sm-custom {
            padding: 8px 20px;
            font-size: 0.85rem;
            border-radius: 40px;
        }

        /* ========== 通用 section ========== */
        .section {
            padding: 96px 0;
            position: relative;
        }
        .section-sm {
            padding: 64px 0;
        }
        .section-dark {
            background: var(--primary);
            color: var(--text-on-dark);
        }
        .section-dark .section-title {
            color: var(--text-on-dark);
        }
        .section-dark .section-desc {
            color: var(--text-on-dark-secondary);
        }
        .section-warm {
            background: var(--bg-warm);
        }
        .section-white {
            background: var(--bg-white);
        }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 36px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--highlight);
            margin-bottom: 12px;
        }
        .text-accent {
            color: var(--accent);
        }
        .text-highlight {
            color: var(--highlight);
        }

        /* ========== 信任条/痛点数据 ========== */
        .trust-strip {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 36px 0;
        }
        .trust-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 18px;
            border-radius: 12px;
            transition: var(--transition);
        }
        .trust-item:hover {
            background: var(--bg-warm);
        }
        .trust-item .trust-icon {
            width: 48px;
            height: 48px;
            background: var(--accent-dim);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .trust-item .trust-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .trust-item .trust-text strong {
            font-size: 1.15rem;
            color: var(--text-main);
            font-weight: 700;
            display: block;
            font-family: var(--font-num);
        }

        /* ========== 解决方案区 ========== */
        .solution-panel {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 48px;
            align-items: start;
        }
        .solution-text h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
        }
        .solution-text p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 14px;
        }
        .solution-text ul {
            list-style: none;
            padding: 0;
            margin: 20px 0 0;
        }
        .solution-text ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-main);
            padding: 8px 0;
            border-bottom: 1px dashed var(--border-light);
        }
        .solution-text ul li .fa-solid {
            color: var(--accent);
            margin-top: 4px;
            font-size: 0.85rem;
        }
        .solution-card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .solution-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .solution-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-accent);
            box-shadow: var(--shadow-card-hover);
        }
        .solution-card .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            border-radius: 12px;
            overflow: hidden;
            background-size: cover;
            background-position: center;
            margin-bottom: 4px;
        }
        .solution-card .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
        }
        .solution-card .card-desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .solution-card .card-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .solution-card .card-link:hover {
            color: var(--highlight);
        }

        /* ========== 优惠阶梯 ========== */
        .ladder-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .ladder-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .ladder-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--border-accent);
        }
        .ladder-card .ladder-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--highlight);
            color: var(--text-on-dark);
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            letter-spacing: 0.5px;
        }
        .ladder-card .ladder-step {
            font-family: var(--font-num);
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 1.5px;
            margin-bottom: 10px;
        }
        .ladder-card .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .ladder-card .card-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== 套餐对比 ========== */
        .pricing-table {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            align-items: start;
        }
        .pricing-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            border: 1px solid var(--border-light);
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .pricing-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .pricing-card.featured {
            border: 2px solid var(--accent);
            box-shadow: 0 20px 50px rgba(24, 224, 200, 0.15);
            transform: scale(1.03);
        }
        .pricing-card.featured:hover {
            transform: scale(1.03) translateY(-4px);
        }
        .pricing-card .featured-flag {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 50px;
            letter-spacing: 0.5px;
        }
        .pricing-card .plan-name {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .pricing-card .plan-price {
            font-family: var(--font-num);
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .pricing-card .plan-price .currency {
            font-size: 1.2rem;
            font-weight: 600;
        }
        .pricing-card .plan-period {
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }
        .pricing-card ul {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
            text-align: left;
        }
        .pricing-card ul li {
            padding: 8px 0;
            font-size: 0.88rem;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            border-bottom: 1px dashed var(--border-light);
        }
        .pricing-card ul li .fa-solid {
            color: var(--accent);
            font-size: 0.8rem;
            margin-top: 5px;
        }
        .pricing-card ul li.disabled {
            color: #C0BBC9;
        }
        .pricing-card ul li.disabled .fa-solid {
            color: #D0CDD8;
        }

        /* ========== 保障条 ========== */
        .guarantee-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: var(--transition);
        }
        .guarantee-item:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(24, 224, 200, 0.3);
        }
        .guarantee-item .g-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--accent-dim);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .guarantee-item .g-text {
            font-size: 0.85rem;
            color: var(--text-on-dark-secondary);
            line-height: 1.5;
        }
        .guarantee-item .g-text strong {
            display: block;
            color: var(--text-on-dark);
            font-size: 0.95rem;
            font-weight: 600;
        }

        /* ========== 客户证言 ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .testimonial-card .t-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), #5A4A7A);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 14px;
            flex-shrink: 0;
        }
        .testimonial-card .t-quote {
            font-size: 0.9rem;
            color: var(--text-main);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .testimonial-card .t-author {
            font-size: 0.82rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .testimonial-card .t-rating {
            color: #F5A623;
            font-size: 0.75rem;
            letter-spacing: 1px;
        }

        /* ========== 资讯区 ========== */
        .news-layout {
            display: grid;
            grid-template-columns: 1.3fr 1fr;
            gap: 36px;
        }
        .news-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .news-list li {
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .news-list li:hover {
            background: var(--bg-warm);
            border-radius: 8px;
        }
        .news-list li a {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 12px;
            color: var(--text-main);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .news-list li a:hover {
            color: var(--accent);
        }
        .news-list li .news-date {
            font-family: var(--font-num);
            font-size: 0.78rem;
            color: var(--text-secondary);
            white-space: nowrap;
            min-width: 80px;
        }
        .news-list li .news-tag {
            font-size: 0.72rem;
            background: var(--accent-dim);
            color: var(--accent);
            padding: 3px 10px;
            border-radius: 50px;
            white-space: nowrap;
        }
        .news-sidebar {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
        }
        .news-sidebar h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
        }
        .news-sidebar .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .news-sidebar .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px dashed var(--border-light);
            font-size: 0.88rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .news-sidebar .sidebar-list li .fa-solid {
            color: var(--accent);
            font-size: 0.7rem;
        }

        /* ========== FAQ ========== */
        .accordion-custom .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: 12px !important;
            margin-bottom: 12px;
            background: var(--bg-white);
            overflow: hidden;
            transition: var(--transition);
        }
        .accordion-custom .accordion-item:hover {
            border-color: var(--border-accent);
        }
        .accordion-custom .accordion-button {
            background: var(--bg-white);
            color: var(--text-main);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            transition: var(--transition);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--accent-dim);
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-custom .accordion-button::after {
            filter: none;
            transition: var(--transition);
        }
        .accordion-custom .accordion-body {
            padding: 18px 22px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.8;
            background: var(--bg-warm);
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark-section) 100%);
            border-radius: 24px;
            padding: 60px 48px;
            color: var(--text-on-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(24, 224, 200, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-on-dark-secondary);
            font-size: 1rem;
            max-width: 500px;
            margin-bottom: 24px;
        }
        .cta-section .cta-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 16px;
        }
        .cta-section .form-control {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-on-dark);
            border-radius: 50px;
            padding: 12px 22px;
            font-size: 0.9rem;
            min-width: 240px;
            transition: var(--transition);
        }
        .cta-section .form-control::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .cta-section .form-control:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(24, 224, 200, 0.2);
            background: rgba(255, 255, 255, 0.12);
        }

        /* ========== 页脚 ========== */
        .footer {
            background: var(--primary);
            color: var(--text-on-dark-secondary);
            padding: 64px 0 0;
        }
        .footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-on-dark);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer .footer-brand .logo-icon {
            width: 36px;
            height: 36px;
            background: rgba(24, 224, 200, 0.15);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 800;
        }
        .footer .footer-desc {
            font-size: 0.85rem;
            color: var(--text-on-dark-secondary);
            line-height: 1.7;
            max-width: 280px;
        }
        .footer h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-on-dark);
            margin-bottom: 16px;
        }
        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 8px;
        }
        .footer ul li a {
            color: var(--text-on-dark-secondary);
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .footer ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 48px;
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1199px) {
            .solution-panel {
                gap: 32px;
            }
            .pricing-table {
                gap: 16px;
            }
            .pricing-card {
                padding: 24px 20px;
            }
        }
        @media (max-width: 1024px) {
            .section {
                padding: 72px 0;
            }
            .hero {
                min-height: 560px;
            }
            .trust-strip {
                padding: 28px 0;
            }
        }
        @media (max-width: 991px) {
            .main-nav .navbar-collapse {
                background: var(--bg-white);
                border-radius: 16px;
                padding: 16px;
                margin-top: 10px;
                box-shadow: var(--shadow-card);
                border: 1px solid var(--border-light);
            }
            .main-nav .nav-link {
                padding: 10px 16px !important;
            }
            .solution-panel {
                grid-template-columns: 1fr;
            }
            .solution-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .ladder-grid,
            .pricing-table {
                grid-template-columns: 1fr 1fr;
            }
            .pricing-card.featured {
                grid-column: 1 / -1;
                transform: none;
            }
            .pricing-card.featured:hover {
                transform: translateY(-4px);
            }
            .guarantee-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: 1fr 1fr;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .cta-section {
                padding: 48px 32px;
            }
        }
        @media (max-width: 767px) {
            .top-bar .top-bar-inner {
                justify-content: center;
                text-align: center;
            }
            .top-bar-left {
                font-size: 11px;
            }
            .hero {
                min-height: 520px;
            }
            .hero .hero-series-bar {
                gap: 8px;
            }
            .hero .series-pill {
                font-size: 0.78rem;
                padding: 6px 14px;
            }
            .hero .hero-stats {
                gap: 20px;
                flex-wrap: wrap;
            }
            .solution-card-grid {
                grid-template-columns: 1fr;
            }
            .ladder-grid {
                grid-template-columns: 1fr;
            }
            .pricing-table {
                grid-template-columns: 1fr;
            }
            .pricing-card.featured {
                grid-column: 1;
            }
            .guarantee-strip {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 56px 0;
            }
            .cta-section {
                padding: 36px 24px;
                border-radius: 16px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .main-nav .navbar-brand {
                font-size: 1.35rem;
            }
            .main-nav .navbar-brand .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
            .news-list li a {
                flex-wrap: wrap;
                gap: 8px;
            }
            .news-list li .news-date {
                min-width: auto;
            }
        }
        @media (max-width: 520px) {
            .hero {
                min-height: 480px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero .hero-desc {
                font-size: 0.9rem;
            }
            .hero .hero-cta-group {
                flex-direction: column;
            }
            .hero .hero-cta-group .btn-custom {
                width: 100%;
                justify-content: center;
            }
            .btn-custom {
                padding: 10px 22px;
                font-size: 0.88rem;
            }
            .trust-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .solution-card {
                padding: 18px;
            }
            .footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .pricing-card .plan-price {
                font-size: 2.2rem;
            }
            .main-nav .navbar-brand .brand-sub {
                display: none;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1A0F2E;
            --primary-dark: #120A20;
            --accent: #18E0C8;
            --accent-dim: rgba(24, 224, 200, 0.1);
            --highlight: #FF5A5F;
            --highlight-dark: #E84A4F;
            --bg-warm: #F7F5F1;
            --bg-white: #FFFFFF;
            --bg-dark-section: #2B1B42;
            --text-main: #1F1B2E;
            --text-secondary: #6E6882;
            --text-on-dark: #FFFFFF;
            --text-on-dark-secondary: #D9D3E8;
            --border-light: rgba(26, 15, 46, 0.08);
            --border-accent: rgba(24, 224, 200, 0.45);
            --radius-card: 16px;
            --radius-btn: 50px;
            --shadow-card: 0 12px 30px rgba(26, 15, 46, 0.10);
            --shadow-card-hover: 0 18px 40px rgba(26, 15, 46, 0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto", -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            color: var(--text-main);
            background-color: var(--bg-warm);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--text-main);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: 1200px;
        }

        /* 顶部信息条 */
        .top-bar {
            background: var(--primary);
            min-height: 36px;
            display: flex;
            align-items: center;
            font-size: 12.5px;
            color: var(--text-on-dark-secondary);
            position: relative;
            z-index: 1050;
        }
        .top-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 6px 16px;
            padding-top: 6px;
            padding-bottom: 6px;
        }
        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12.5px;
            color: var(--text-on-dark-secondary);
        }
        .top-bar-left .fa-solid,
        .top-bar-left .fa-regular {
            color: var(--accent);
            font-size: 12px;
        }
        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .top-bar-right a {
            color: var(--text-on-dark-secondary);
            font-size: 12.5px;
            transition: var(--transition);
        }
        .top-bar-right a:hover {
            color: var(--accent);
        }
        .top-bar-divider {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, 0.2);
        }

        /* 主导航 */
        .main-nav {
            background: var(--bg-white);
            min-height: 72px;
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1040;
            box-shadow: 0 4px 20px rgba(26, 15, 46, 0.06);
        }
        .main-nav .navbar {
            padding: 0;
            min-height: 72px;
        }
        .main-nav .navbar-brand {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .main-nav .navbar-brand .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary) 0%, #3D2A5C 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 4px 12px rgba(26, 15, 46, 0.25);
            flex-shrink: 0;
        }
        .main-nav .navbar-brand .brand-text {
            line-height: 1.2;
        }
        .main-nav .navbar-brand .brand-sub {
            font-size: 0.7rem;
            font-weight: 400;
            color: var(--text-secondary);
            letter-spacing: 1.2px;
            display: block;
        }
        .main-nav .navbar-nav {
            gap: 4px;
        }
        .main-nav .nav-link {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-main);
            padding: 10px 14px !important;
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
        }
        .main-nav .nav-link:hover {
            color: var(--accent);
            background: var(--accent-dim);
        }
        .main-nav .nav-link.active {
            color: var(--highlight);
            background: rgba(255, 90, 95, 0.08);
        }
        .main-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--highlight);
            border-radius: 3px;
        }
        .main-nav .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 10px;
            padding: 8px 12px;
            color: var(--primary);
        }
        .main-nav .navbar-toggler:focus {
            box-shadow: 0 0 0 3px var(--accent-dim);
        }
        .main-nav .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
        }

        /* Hero 内页 */
        .hero-inner {
            position: relative;
            min-height: 260px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 48px 0;
        }
        .hero-inner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 15, 46, 0.85) 0%, rgba(26, 15, 46, 0.6) 50%, rgba(43, 27, 66, 0.75) 100%);
        }
        .hero-inner .container {
            position: relative;
            z-index: 2;
        }
        .hero-inner .breadcrumb {
            margin-bottom: 16px;
            --bs-breadcrumb-divider-color: rgba(255, 255, 255, 0.5);
            font-size: 0.88rem;
        }
        .hero-inner .breadcrumb a {
            color: var(--accent);
        }
        .hero-inner .breadcrumb .breadcrumb-item.active {
            color: var(--text-on-dark-secondary);
        }
        .hero-inner h1 {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--text-on-dark);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .hero-inner .hero-sub {
            font-size: 1.05rem;
            color: var(--text-on-dark-secondary);
            max-width: 680px;
            margin-bottom: 0;
        }

        /* 内容区主体 */
        .page-main {
            padding: 64px 0 80px;
        }
        .sidebar-category {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            padding: 20px;
            position: sticky;
            top: 108px;
        }
        .sidebar-category .sidebar-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-category .sidebar-title i {
            color: var(--accent);
            font-size: 0.9rem;
        }
        .sidebar-category ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-category ul li a {
            display: block;
            padding: 10px 14px;
            border-radius: 10px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            border-left: 3px solid transparent;
        }
        .sidebar-category ul li a:hover {
            color: var(--primary);
            background: var(--accent-dim);
            border-left-color: var(--accent);
        }
        .sidebar-category ul li a.active {
            color: var(--highlight);
            background: rgba(255, 90, 95, 0.08);
            border-left-color: var(--highlight);
            font-weight: 600;
        }

        /* 数据卡片行 */
        .data-card-row {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            padding: 20px 22px;
            margin-bottom: 22px;
            transition: var(--transition);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            position: relative;
            overflow: hidden;
        }
        .data-card-row::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--accent);
            border-radius: 0 2px 2px 0;
        }
        .data-card-row:hover {
            transform: translateY(-3px);
            border-color: var(--border-accent);
            box-shadow: var(--shadow-card-hover);
        }
        .data-card-row .dcr-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: var(--accent-dim);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--accent);
            flex-shrink: 0;
        }
        .data-card-row .dcr-content {
            flex: 1;
            min-width: 200px;
        }
        .data-card-row .dcr-content h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .data-card-row .dcr-content p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .data-card-row .dcr-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-dim);
            padding: 6px 12px;
            border-radius: 20px;
            white-space: nowrap;
        }
        .data-card-row .dcr-btn {
            flex-shrink: 0;
        }
        .data-card-row .btn-outline-accent {
            border: 1px solid var(--accent);
            color: var(--accent);
            background: transparent;
            border-radius: var(--radius-btn);
            padding: 8px 18px;
            font-size: 0.85rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .data-card-row .btn-outline-accent:hover {
            background: var(--accent);
            color: var(--primary);
            box-shadow: 0 4px 14px rgba(24, 224, 200, 0.3);
        }
        .data-card-row .dcr-meta {
            font-size: 0.8rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .data-card-row .dcr-meta i {
            color: var(--accent);
            font-size: 0.75rem;
        }

        /* 标签筛选条 */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 28px;
        }
        .filter-bar .filter-tag {
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            cursor: pointer;
            transition: var(--transition);
            user-select: none;
        }
        .filter-bar .filter-tag:hover {
            border-color: var(--accent);
            color: var(--accent);
        }
        .filter-bar .filter-tag.active {
            background: var(--primary);
            color: var(--text-on-dark);
            border-color: var(--primary);
        }

        /* 底部CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark-section) 100%);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            margin-top: 60px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 24px;
            justify-content: space-between;
        }
        .cta-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-on-dark);
            margin-bottom: 6px;
        }
        .cta-section p {
            font-size: 0.95rem;
            color: var(--text-on-dark-secondary);
            margin-bottom: 0;
        }
        .btn-primary-cta {
            background: var(--highlight);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-cta:hover,
        .btn-primary-cta:focus {
            background: var(--highlight-dark);
            color: #fff;
            box-shadow: 0 8px 24px rgba(255, 90, 95, 0.35);
            transform: translateY(-2px);
        }
        .btn-secondary-outline {
            border: 1px solid var(--accent);
            color: var(--accent);
            background: transparent;
            border-radius: var(--radius-btn);
            padding: 14px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-secondary-outline:hover,
        .btn-secondary-outline:focus {
            background: var(--accent);
            color: var(--primary);
            box-shadow: 0 8px 24px rgba(24, 224, 200, 0.3);
        }

        /* 页脚 */
        .footer {
            background: var(--primary);
            padding: 64px 0 32px;
            color: var(--text-on-dark-secondary);
        }
        .footer-brand {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-on-dark);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-brand .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, #3D2A5C 0%, #2B1B42 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 800;
            font-size: 1.05rem;
            flex-shrink: 0;
        }
        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: var(--text-on-dark-secondary);
            margin-bottom: 0;
        }
        .footer h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-on-dark);
            margin-bottom: 16px;
        }
        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: var(--text-on-dark-secondary);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            margin-top: 40px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--text-on-dark-secondary);
        }

        /* 响应式 */
        @media (max-width: 992px) {
            .hero-inner h1 {
                font-size: 2.1rem;
            }
            .sidebar-category {
                position: static;
                margin-bottom: 30px;
            }
            .cta-section {
                padding: 36px 28px;
            }
        }
        @media (max-width: 768px) {
            .top-bar .container {
                justify-content: center;
                text-align: center;
            }
            .top-bar-left,
            .top-bar-right {
                justify-content: center;
            }
            .hero-inner {
                min-height: 200px;
                padding: 36px 0;
            }
            .hero-inner h1 {
                font-size: 1.7rem;
            }
            .page-main {
                padding: 40px 0 56px;
            }
            .data-card-row {
                padding: 16px;
                flex-direction: column;
                align-items: flex-start;
            }
            .data-card-row .dcr-btn {
                width: 100%;
            }
            .data-card-row .btn-outline-accent {
                width: 100%;
                text-align: center;
            }
            .cta-section {
                flex-direction: column;
                text-align: center;
                padding: 28px 20px;
            }
            .footer {
                padding: 40px 0 24px;
            }
        }
        @media (max-width: 520px) {
            .hero-inner h1 {
                font-size: 1.4rem;
            }
            .data-card-row .dcr-badge {
                font-size: 0.75rem;
                padding: 4px 10px;
            }
            .filter-bar .filter-tag {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
            .btn-primary-cta,
            .btn-secondary-outline {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1A0F2E;
            --primary-dark: #120A20;
            --accent: #18E0C8;
            --accent-dim: rgba(24, 224, 200, 0.1);
            --highlight: #FF5A5F;
            --highlight-dark: #E84A4F;
            --bg-warm: #F7F5F1;
            --bg-white: #FFFFFF;
            --bg-dark-section: #2B1B42;
            --text-main: #1F1B2E;
            --text-secondary: #6E6882;
            --text-on-dark: #FFFFFF;
            --text-on-dark-secondary: #D9D3E8;
            --border-light: rgba(26, 15, 46, 0.08);
            --border-accent: rgba(24, 224, 200, 0.45);
            --radius-card: 16px;
            --radius-btn: 50px;
            --shadow-card: 0 12px 30px rgba(26, 15, 46, 0.10);
            --shadow-card-hover: 0 18px 40px rgba(26, 15, 46, 0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto", -apple-system, sans-serif;
        }

        * {
            box-sizing: border-box;
        }

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

        body {
            font-family: var(--font-sans);
            color: var(--text-main);
            background-color: var(--bg-warm);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--accent);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

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

        .container {
            max-width: 1200px;
        }

        /* ========== 顶部信息条 ========== */
        .top-bar {
            background: var(--primary-dark);
            min-height: 36px;
            padding: 6px 0;
            font-size: 12.5px;
            position: relative;
            z-index: 1050;
        }

        .top-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 6px 16px;
        }

        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-on-dark-secondary);
            font-size: 12.5px;
        }

        .top-bar-left .fa-solid,
        .top-bar-left .fa-regular {
            color: var(--accent);
            font-size: 12px;
        }

        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .top-bar-right a {
            color: var(--text-on-dark-secondary);
            font-size: 12.5px;
            transition: var(--transition);
        }

        .top-bar-right a:hover {
            color: var(--accent);
        }

        .top-bar-divider {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, 0.2);
        }

        /* ========== 主导航 ========== */
        .main-nav {
            background: var(--bg-white);
            min-height: 72px;
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1040;
            box-shadow: 0 4px 20px rgba(26, 15, 46, 0.06);
        }

        .main-nav .navbar {
            padding: 0;
            min-height: 72px;
        }

        .main-nav .navbar-brand {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .main-nav .navbar-brand .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary) 0%, #3D2A5C 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 4px 12px rgba(26, 15, 46, 0.25);
            flex-shrink: 0;
        }

        .main-nav .navbar-brand .brand-text {
            line-height: 1.2;
        }

        .main-nav .navbar-brand .brand-sub {
            font-size: 0.7rem;
            font-weight: 400;
            color: var(--text-secondary);
            letter-spacing: 1.2px;
            display: block;
        }

        .main-nav .navbar-nav {
            gap: 4px;
        }

        .main-nav .nav-link {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-main);
            padding: 10px 14px !important;
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
        }

        .main-nav .nav-link:hover {
            color: var(--accent);
            background: var(--accent-dim);
        }

        .main-nav .nav-link.active {
            color: var(--highlight);
            background: rgba(255, 90, 95, 0.08);
        }

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

        .main-nav .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 10px;
            padding: 8px 12px;
            color: var(--primary);
        }

        .main-nav .navbar-toggler:focus {
            box-shadow: 0 0 0 3px var(--accent-dim);
        }

        .main-nav .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
        }

        /* ========== 分类页 Hero ========== */
        .page-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 72px 0;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 15, 46, 0.88) 0%, rgba(26, 15, 46, 0.68) 55%, rgba(26, 15, 46, 0.45) 100%);
            z-index: 1;
        }

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

        .breadcrumb-hero {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-on-dark-secondary);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb-hero a {
            color: var(--text-on-dark-secondary);
            transition: var(--transition);
        }

        .breadcrumb-hero a:hover {
            color: var(--accent);
        }

        .breadcrumb-hero .separator {
            color: rgba(255, 255, 255, 0.35);
            font-size: 11px;
        }

        .breadcrumb-hero .current {
            color: var(--accent);
            font-weight: 500;
        }

        .page-hero h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-on-dark);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .page-hero h1 .accent-text {
            color: var(--accent);
        }

        .page-hero .hero-sub {
            font-size: 17px;
            color: var(--text-on-dark-secondary);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .hero-badges {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 50px;
            padding: 8px 16px;
            color: var(--text-on-dark);
            font-size: 13px;
            font-weight: 500;
            backdrop-filter: blur(8px);
        }

        .hero-badge .fa-solid {
            color: var(--accent);
            font-size: 12px;
        }

        /* ========== 通用板块样式 ========== */
        .section {
            padding: 80px 0;
        }

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

        .section-header {
            margin-bottom: 40px;
        }

        .section-header .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent-dim);
            color: #0D9488;
            font-size: 13px;
            font-weight: 600;
            border-radius: 50px;
            padding: 6px 14px;
            margin-bottom: 14px;
            letter-spacing: 0.6px;
        }

        .section-header h2 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
        }

        /* ========== 双列卡片网格 ========== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .guide-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .guide-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-accent);
            box-shadow: var(--shadow-card-hover);
        }

        .guide-card .card-color-bar {
            height: 6px;
            width: 100%;
            flex-shrink: 0;
        }

        .guide-card .card-color-bar.bar-cyan {
            background: linear-gradient(90deg, #18E0C8 0%, #0EA5A0 100%);
        }

        .guide-card .card-color-bar.bar-coral {
            background: linear-gradient(90deg, #FF5A5F 0%, #E84A4F 100%);
        }

        .guide-card .card-color-bar.bar-purple {
            background: linear-gradient(90deg, #7C3AED 0%, #5B21B6 100%);
        }

        .guide-card .card-color-bar.bar-amber {
            background: linear-gradient(90deg, #F59E0B 0%, #D97706 100%);
        }

        .guide-card .card-color-bar.bar-blue {
            background: linear-gradient(90deg, #3B82F6 0%, #2563EB 100%);
        }

        .guide-card .card-color-bar.bar-green {
            background: linear-gradient(90deg, #10B981 0%, #059669 100%);
        }

        .guide-card .card-body {
            padding: 28px 28px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .guide-card .card-category {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 12px;
            font-weight: 600;
            color: #0D9488;
            background: var(--accent-dim);
            border-radius: 50px;
            padding: 4px 12px;
            margin-bottom: 14px;
            align-self: flex-start;
            letter-spacing: 0.5px;
        }

        .guide-card .card-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .guide-card .card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 18px;
        }

        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .guide-card .card-meta .rating {
            display: flex;
            align-items: center;
            gap: 5px;
            color: #F59E0B;
            font-weight: 600;
        }

        .guide-card .card-meta .rating .fa-star {
            font-size: 13px;
        }

        .guide-card .card-meta .rating .score {
            color: var(--text-main);
            font-weight: 700;
            font-family: var(--font-num);
        }

        .guide-card .card-meta .date {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .guide-card .card-meta .date .fa-regular {
            color: var(--text-secondary);
            font-size: 12px;
        }

        .guide-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent);
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            margin-top: 14px;
        }

        .guide-card .card-link .fa-arrow-right {
            font-size: 12px;
            transition: transform 0.3s ease;
        }

        .guide-card .card-link:hover {
            color: #0D9488;
        }

        .guide-card .card-link:hover .fa-arrow-right {
            transform: translateX(4px);
        }

        /* ========== 入门流程图 ========== */
        .steps-inline {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 8px;
        }

        .step-inline-item {
            flex: 1;
            min-width: 180px;
            background: var(--bg-warm);
            border-radius: 12px;
            padding: 20px 18px;
            border: 1px solid var(--border-light);
            display: flex;
            align-items: flex-start;
            gap: 12px;
            transition: var(--transition);
        }

        .step-inline-item:hover {
            border-color: var(--border-accent);
            background: var(--bg-white);
            box-shadow: var(--shadow-card);
        }

        .step-inline-item .step-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
            flex-shrink: 0;
            font-family: var(--font-num);
        }

        .step-inline-item .step-text h5 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .step-inline-item .step-text p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== 提示说明区 ========== */
        .tips-panel {
            background: var(--bg-dark-section);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            color: var(--text-on-dark);
            position: relative;
            overflow: hidden;
        }

        .tips-panel::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(24, 224, 200, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

        .tips-panel h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-on-dark);
        }

        .tips-panel .tip-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px 24px;
            margin-bottom: 0;
        }

        .tips-panel .tip-item {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: var(--text-on-dark-secondary);
            line-height: 1.7;
        }

        .tips-panel .tip-item .fa-circle-check {
            color: var(--accent);
            font-size: 15px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ========== FAQ ========== */
        .accordion-custom .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: 12px !important;
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--bg-white);
            box-shadow: none;
        }

        .accordion-custom .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            background: var(--bg-white);
            padding: 18px 22px;
            border-radius: 12px !important;
            box-shadow: none;
            transition: var(--transition);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--accent);
            background: var(--bg-warm);
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px var(--accent-dim);
            border-color: var(--border-accent);
        }

        .accordion-custom .accordion-button::after {
            background-size: 14px;
            transition: var(--transition);
        }

        .accordion-custom .accordion-body {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding: 16px 22px 20px;
        }

        /* ========== CTA 区块 ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #2D1B50 100%);
            border-radius: var(--radius-card);
            padding: 52px 40px;
            color: var(--text-on-dark);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 260px;
            height: 260px;
            background: rgba(255, 90, 95, 0.1);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 180px;
            height: 180px;
            background: rgba(24, 224, 200, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .cta-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-section .cta-desc {
            font-size: 16px;
            color: var(--text-on-dark-secondary);
            max-width: 520px;
            line-height: 1.8;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }

        .btn-primary-custom {
            background: var(--highlight);
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            position: relative;
            z-index: 1;
        }

        .btn-primary-custom:hover {
            background: var(--highlight-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 90, 95, 0.35);
        }

        .btn-outline-accent {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--border-accent);
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            position: relative;
            z-index: 1;
        }

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

        /* ========== 页脚 ========== */
        .footer {
            background: var(--primary);
            color: var(--text-on-dark);
            padding: 64px 0 0;
            margin-top: 0;
        }

        .footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-on-dark);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer .footer-brand .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, #2D1B50 0%, #3D2A5C 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 800;
            font-size: 1.05rem;
            flex-shrink: 0;
        }

        .footer .footer-desc {
            font-size: 14px;
            color: var(--text-on-dark-secondary);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-on-dark);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

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

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

        .footer ul li a {
            font-size: 14px;
            color: var(--text-on-dark-secondary);
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            margin-top: 40px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px 16px;
            font-size: 13px;
            color: var(--text-on-dark-secondary);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991px) {
            .main-nav .navbar-collapse {
                background: var(--bg-white);
                border-radius: 12px;
                padding: 16px;
                box-shadow: var(--shadow-card);
                margin-top: 8px;
            }

            .main-nav .nav-link {
                padding: 12px 16px !important;
            }

            .page-hero {
                min-height: 360px;
                padding: 56px 0;
            }

            .page-hero h1 {
                font-size: 38px;
            }

            .guide-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 767px) {
            .section {
                padding: 56px 0;
            }

            .page-hero {
                min-height: 320px;
                padding: 48px 0;
            }

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

            .page-hero .hero-sub {
                font-size: 15px;
            }

            .guide-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .tips-panel .tip-list {
                grid-template-columns: 1fr;
            }

            .steps-inline {
                flex-direction: column;
            }

            .step-inline-item {
                min-width: 100%;
            }

            .cta-section {
                padding: 36px 24px;
            }

            .cta-section .cta-title {
                font-size: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
        }

        @media (max-width: 575px) {
            .top-bar {
                font-size: 11px;
            }

            .top-bar-right .top-bar-divider {
                display: none;
            }

            .top-bar-right a {
                font-size: 11px;
            }

            .main-nav .navbar-brand {
                font-size: 1.35rem;
            }

            .main-nav .navbar-brand .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }

            .page-hero h1 {
                font-size: 26px;
            }

            .section-header h2 {
                font-size: 24px;
            }

            .guide-card .card-body {
                padding: 20px 18px 16px;
            }

            .guide-card .card-title {
                font-size: 17px;
            }

            .btn-primary-custom,
            .btn-outline-accent {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 14px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1A0F2E;
            --primary-dark: #120A20;
            --accent: #18E0C8;
            --accent-dim: rgba(24, 224, 200, 0.1);
            --highlight: #FF5A5F;
            --highlight-dark: #E84A4F;
            --bg-warm: #F7F5F1;
            --bg-white: #FFFFFF;
            --bg-dark-section: #2B1B42;
            --text-main: #1F1B2E;
            --text-secondary: #6E6882;
            --text-on-dark: #FFFFFF;
            --text-on-dark-secondary: #D9D3E8;
            --border-light: rgba(26, 15, 46, 0.08);
            --border-accent: rgba(24, 224, 200, 0.45);
            --radius-card: 16px;
            --radius-btn: 50px;
            --shadow-card: 0 12px 30px rgba(26, 15, 46, 0.10);
            --shadow-card-hover: 0 18px 40px rgba(26, 15, 46, 0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto", -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

        body {
            font-family: var(--font-sans);
            color: var(--text-main);
            background-color: var(--bg-warm);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--accent);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

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

        .container {
            max-width: 1200px;
        }

        /* ========== 顶部信息条 ========== */
        .top-bar {
            background: var(--primary);
            min-height: 36px;
            display: flex;
            align-items: center;
            font-size: 12.5px;
            color: var(--text-on-dark-secondary);
            position: relative;
            z-index: 1055;
        }

        .top-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--text-on-dark-secondary);
        }

        .top-bar-left .fa-solid,
        .top-bar-left .fa-regular {
            color: var(--accent);
            font-size: 12px;
        }

        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .top-bar-right a {
            color: var(--text-on-dark-secondary);
            font-size: 12.5px;
            transition: var(--transition);
        }

        .top-bar-right a:hover {
            color: var(--accent);
        }

        .top-bar-divider {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, 0.2);
        }

        /* ========== 主导航 ========== */
        .main-nav {
            background: var(--bg-white);
            min-height: 72px;
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1040;
            box-shadow: 0 4px 20px rgba(26, 15, 46, 0.06);
        }

        .main-nav .navbar {
            padding: 0;
            min-height: 72px;
        }

        .main-nav .navbar-brand {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .main-nav .navbar-brand .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary) 0%, #3D2A5C 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 4px 12px rgba(26, 15, 46, 0.25);
            flex-shrink: 0;
        }

        .main-nav .navbar-brand .brand-text {
            line-height: 1.2;
        }

        .main-nav .navbar-brand .brand-sub {
            font-size: 0.7rem;
            font-weight: 400;
            color: var(--text-secondary);
            letter-spacing: 1.2px;
            display: block;
        }

        .main-nav .navbar-nav {
            gap: 4px;
        }

        .main-nav .nav-link {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-main);
            padding: 10px 14px !important;
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
        }

        .main-nav .nav-link:hover {
            color: var(--accent);
            background: var(--accent-dim);
        }

        .main-nav .nav-link.active {
            color: var(--highlight);
            background: rgba(255, 90, 95, 0.08);
        }

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

        .main-nav .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 10px;
            padding: 8px 12px;
            color: var(--primary);
            min-height: 44px;
            min-width: 44px;
        }

        .main-nav .navbar-toggler:focus {
            box-shadow: 0 0 0 3px var(--accent-dim);
        }

        .main-nav .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
        }

        /* ========== 分类页 Hero ========== */
        .category-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
            padding: 72px 0;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 15, 46, 0.88) 0%, rgba(26, 15, 46, 0.72) 55%, rgba(26, 15, 46, 0.6) 100%);
            z-index: 1;
        }

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

        .breadcrumbs {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-on-dark-secondary);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumbs a {
            color: var(--accent);
            transition: var(--transition);
        }

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

        .breadcrumbs .breadcrumb-sep {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.75rem;
        }

        .breadcrumbs .breadcrumb-current {
            color: var(--text-on-dark);
            font-weight: 500;
        }

        .category-hero h1 {
            font-size: clamp(2rem, 4.5vw, 3.2rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-on-dark);
            margin-bottom: 18px;
            letter-spacing: 0.5px;
            max-width: 720px;
        }

        .category-hero h1 .highlight {
            color: var(--accent);
            position: relative;
        }

        .category-hero .hero-sub {
            font-size: 1.1rem;
            line-height: 1.7;
            color: var(--text-on-dark-secondary);
            max-width: 620px;
            margin-bottom: 28px;
        }

        .category-hero .hero-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: var(--text-on-dark-secondary);
        }

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

        .category-hero .hero-meta .fa-solid {
            color: var(--accent);
            font-size: 0.85rem;
        }

        /* ========== 时间线 FAQ 区 ========== */
        .timeline-section {
            padding: 96px 0;
            background: var(--bg-warm);
            position: relative;
        }

        .timeline-section .section-heading {
            margin-bottom: 56px;
        }

        .section-heading .section-tag {
            display: inline-block;
            background: var(--accent-dim);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .section-heading h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-heading .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.7;
        }

        .timeline-wrapper {
            position: relative;
            padding-left: 0;
        }

        .timeline-wrapper::before {
            content: '';
            position: absolute;
            left: 7px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-accent);
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding-left: 44px;
            margin-bottom: 36px;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-node {
            position: absolute;
            left: 0;
            top: 4px;
            width: 16px;
            height: 16px;
            background: var(--accent);
            border-radius: 50%;
            border: 3px solid var(--bg-white);
            box-shadow: 0 0 0 2px var(--accent);
            z-index: 1;
            transition: var(--transition);
        }

        .timeline-item:hover .timeline-node {
            background: var(--highlight);
            box-shadow: 0 0 0 4px rgba(255, 90, 95, 0.25);
            transform: scale(1.15);
        }

        .timeline-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            padding: 28px 32px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .timeline-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--border-accent);
            transform: translateY(-3px);
        }

        .timeline-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: linear-gradient(180deg, var(--accent) 0%, var(--highlight) 100%);
            border-radius: 0 4px 4px 0;
            opacity: 0;
            transition: var(--transition);
        }

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

        .timeline-card-top {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 12px;
            flex-wrap: wrap;
        }

        .timeline-question-label {
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.8px;
            color: var(--highlight);
            text-transform: uppercase;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .timeline-question-label .fa-solid {
            font-size: 0.75rem;
        }

        .timeline-badge {
            font-size: 0.72rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 50px;
            background: var(--accent-dim);
            color: var(--accent);
            letter-spacing: 0.5px;
        }

        .timeline-badge.hot {
            background: rgba(255, 90, 95, 0.1);
            color: var(--highlight);
        }

        .timeline-badge.recent {
            background: rgba(255, 165, 0, 0.12);
            color: #E67E22;
        }

        .timeline-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
            line-height: 1.45;
        }

        .timeline-card .timeline-answer {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        .timeline-card .timeline-action {
            margin-top: 16px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--accent);
            transition: var(--transition);
            background: none;
            border: none;
            padding: 0;
            cursor: pointer;
        }

        .timeline-card .timeline-action:hover {
            color: var(--highlight);
            gap: 12px;
        }

        .timeline-card .timeline-action .fa-solid {
            font-size: 0.75rem;
            transition: var(--transition);
        }

        /* ========== 相关分类推荐 ========== */
        .related-section {
            padding: 88px 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
        }

        .related-section .section-heading {
            margin-bottom: 44px;
        }

        .related-card {
            background: var(--bg-warm);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            box-shadow: 0 4px 16px rgba(26, 15, 46, 0.05);
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--border-accent);
        }

        .related-card .related-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

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

        .related-card:hover .related-img img {
            transform: scale(1.06);
        }

        .related-card .related-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 15, 46, 0.05) 0%, rgba(26, 15, 46, 0.45) 100%);
            pointer-events: none;
        }

        .related-card .related-img .related-img-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            background: var(--accent);
            color: var(--primary);
            letter-spacing: 0.5px;
        }

        .related-card .related-body {
            padding: 22px 24px 24px;
        }

        .related-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .related-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 14px;
        }

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

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

        .related-card .related-link .fa-solid {
            font-size: 0.7rem;
        }

        /* ========== CTA 区 ========== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark-section) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 520px;
            height: 520px;
            background: radial-gradient(circle, rgba(24, 224, 200, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -10%;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(255, 90, 95, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-text h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--text-on-dark);
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .cta-text p {
            font-size: 0.98rem;
            color: var(--text-on-dark-secondary);
            max-width: 520px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .cta-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--highlight);
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: var(--radius-btn);
            border: 2px solid var(--highlight);
            transition: var(--transition);
            min-height: 48px;
            justify-content: center;
        }

        .btn-primary-custom:hover {
            background: var(--highlight-dark);
            border-color: var(--highlight-dark);
            color: #fff;
            box-shadow: 0 8px 24px rgba(255, 90, 95, 0.35);
            transform: translateY(-2px);
        }

        .btn-secondary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--accent);
            font-size: 0.95rem;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: var(--radius-btn);
            border: 2px solid var(--accent);
            transition: var(--transition);
            min-height: 48px;
            justify-content: center;
        }

        .btn-secondary-custom:hover {
            background: var(--accent-dim);
            color: var(--accent);
            box-shadow: 0 8px 24px rgba(24, 224, 200, 0.2);
            transform: translateY(-2px);
        }

        /* ========== 页脚 ========== */
        .footer {
            background: var(--primary);
            padding: 72px 0 28px;
            color: var(--text-on-dark-secondary);
            position: relative;
        }

        .footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent) 0%, var(--highlight) 50%, var(--accent) 100%);
            opacity: 0.5;
        }

        .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-on-dark);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary) 0%, #3D2A5C 100%);
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 800;
            font-size: 1.05rem;
            border: 1px solid rgba(24, 224, 200, 0.3);
        }

        .footer-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            color: var(--text-on-dark-secondary);
            max-width: 300px;
            margin-bottom: 0;
        }

        .footer h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-on-dark);
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

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

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

        .footer ul li a {
            font-size: 0.88rem;
            color: var(--text-on-dark-secondary);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            margin-top: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-on-dark-secondary);
        }

        .footer-bottom span {
            opacity: 0.75;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1199.98px) {
            .category-hero {
                min-height: 340px;
                padding: 56px 0;
            }
            .timeline-section {
                padding: 72px 0;
            }
            .related-section {
                padding: 64px 0;
            }
        }

        @media (max-width: 991.98px) {
            .category-hero {
                min-height: 300px;
                padding: 48px 0;
            }
            .category-hero h1 {
                font-size: clamp(1.7rem, 3.5vw, 2.4rem);
            }
            .category-hero .hero-sub {
                font-size: 1rem;
            }
            .timeline-section {
                padding: 56px 0;
            }
            .timeline-card {
                padding: 22px 22px;
            }
            .related-section {
                padding: 48px 0;
            }
            .footer {
                padding: 56px 0 24px;
            }
            .cta-panel {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 767.98px) {
            .top-bar-left .top-bar-notice {
                display: none;
            }
            .category-hero {
                min-height: auto;
                padding: 40px 0 48px;
        }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero .hero-sub {
                font-size: 0.95rem;
            }
            .timeline-section {
                padding: 48px 0;
            }
            .timeline-wrapper::before {
                left: 5px;
            }
            .timeline-item {
                padding-left: 32px;
                margin-bottom: 28px;
            }
            .timeline-node {
                width: 12px;
                height: 12px;
                border-width: 2px;
                top: 6px;
            }
            .timeline-card {
                padding: 18px 18px;
                border-radius: 12px;
            }
            .timeline-card h3 {
                font-size: 1.05rem;
            }
            .timeline-card .timeline-answer {
                font-size: 0.88rem;
            }
            .related-card .related-img {
                height: 150px;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-buttons {
                flex-direction: column;
                width: 100%;
            }
            .btn-primary-custom,
            .btn-secondary-custom {
                width: 100%;
                padding: 12px 20px;
                font-size: 0.9rem;
            }
            .footer {
                padding: 48px 0 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding-top: 18px;
                margin-top: 32px;
            }
        }

        @media (max-width: 575.98px) {
            .category-hero {
                padding: 32px 0 40px;
            }
            .category-hero h1 {
                font-size: 1.55rem;
            }
            .category-hero .hero-meta {
                gap: 12px;
                font-size: 0.82rem;
                flex-wrap: wrap;
            }
            .section-heading h2 {
                font-size: 1.5rem;
            }
            .timeline-card {
                padding: 16px 14px;
            }
            .timeline-card-top {
                flex-direction: column;
                gap: 8px;
            }
            .timeline-badge {
                align-self: flex-start;
            }
            .related-card .related-img {
                height: 140px;
            }
            .related-card .related-body {
                padding: 16px 16px 20px;
            }
            .related-card h4 {
                font-size: 0.95rem;
            }
            .related-card p {
                font-size: 0.82rem;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #1A0F2E;
            --primary-dark: #120A20;
            --accent: #18E0C8;
            --accent-dim: rgba(24, 224, 200, 0.1);
            --highlight: #FF5A5F;
            --highlight-dark: #E84A4F;
            --bg-warm: #F7F5F1;
            --bg-white: #FFFFFF;
            --bg-dark-section: #2B1B42;
            --text-main: #1F1B2E;
            --text-secondary: #6E6882;
            --text-on-dark: #FFFFFF;
            --text-on-dark-secondary: #D9D3E8;
            --border-light: rgba(26, 15, 46, 0.08);
            --border-accent: rgba(24, 224, 200, 0.45);
            --radius-card: 16px;
            --radius-btn: 50px;
            --shadow-card: 0 12px 30px rgba(26, 15, 46, 0.10);
            --shadow-card-hover: 0 18px 40px rgba(26, 15, 46, 0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto", -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            color: var(--text-main);
            background-color: var(--bg-warm);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--text-main);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: 1200px;
        }
        /* ========== 顶部信息条 ========== */
        .top-bar {
            background: var(--primary);
            min-height: 36px;
            color: var(--text-on-dark-secondary);
            font-size: 12.5px;
            display: flex;
            align-items: center;
            position: relative;
            z-index: 1050;
        }
        .top-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            padding-top: 6px;
            padding-bottom: 6px;
        }
        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 10px;
            min-width: 0;
        }
        .top-bar-left .fa-solid,
        .top-bar-left .fa-regular {
            color: var(--accent);
            font-size: 12px;
        }
        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .top-bar-right a {
            color: var(--text-on-dark-secondary);
            font-size: 12.5px;
            transition: var(--transition);
        }
        .top-bar-right a:hover {
            color: var(--accent);
        }
        .top-bar-divider {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, 0.2);
        }
        /* ========== 主导航 ========== */
        .main-nav {
            background: var(--bg-white);
            min-height: 72px;
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1040;
            box-shadow: 0 4px 20px rgba(26, 15, 46, 0.06);
        }
        .main-nav .navbar {
            padding: 0;
            min-height: 72px;
        }
        .main-nav .navbar-brand {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .main-nav .navbar-brand .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary) 0%, #3D2A5C 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 4px 12px rgba(26, 15, 46, 0.25);
            flex-shrink: 0;
        }
        .main-nav .navbar-brand .brand-text {
            line-height: 1.2;
        }
        .main-nav .navbar-brand .brand-sub {
            font-size: 0.7rem;
            font-weight: 400;
            color: var(--text-secondary);
            letter-spacing: 1.2px;
            display: block;
        }
        .main-nav .navbar-nav {
            gap: 4px;
        }
        .main-nav .nav-link {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-main);
            padding: 10px 14px !important;
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
        }
        .main-nav .nav-link:hover {
            color: var(--accent);
            background: var(--accent-dim);
        }
        .main-nav .nav-link.active {
            color: var(--highlight);
            background: rgba(255, 90, 95, 0.08);
        }
        .main-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--highlight);
            border-radius: 3px;
        }
        .main-nav .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 10px;
            padding: 8px 12px;
            color: var(--primary);
        }
        .main-nav .navbar-toggler:focus {
            box-shadow: 0 0 0 3px var(--accent-dim);
        }
        .main-nav .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
        }
        /* ========== Hero ========== */
        .hero-inner {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .hero-inner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(26, 15, 46, 0.72);
            z-index: 1;
        }
        .hero-inner .container {
            position: relative;
            z-index: 2;
            padding-top: 70px;
            padding-bottom: 70px;
        }
        .breadcrumb-updates {
            background: transparent;
            padding: 0;
            margin: 0 0 20px;
            font-size: 0.9rem;
        }
        .breadcrumb-updates .breadcrumb-item a {
            color: var(--text-on-dark-secondary);
        }
        .breadcrumb-updates .breadcrumb-item a:hover {
            color: var(--accent);
        }
        .breadcrumb-updates .breadcrumb-item.active {
            color: var(--accent);
        }
        .breadcrumb-updates .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-on-dark-secondary);
            content: '/';
        }
        .hero-inner h1 {
            font-size: 3rem;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-on-dark);
            margin-bottom: 18px;
        }
        .hero-inner h1 .highlight-text {
            color: var(--accent);
        }
        .hero-inner .hero-sub {
            font-size: 1.1rem;
            color: var(--text-on-dark-secondary);
            max-width: 680px;
            margin-bottom: 28px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-on-dark-secondary);
            font-size: 0.9rem;
        }
        .hero-meta-item .fa-solid {
            color: var(--accent);
            font-size: 1rem;
        }
        /* ========== 筛选条 ========== */
        .filter-section {
            padding: 56px 0 8px;
        }
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }
        .filter-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            border: 1px solid var(--border-light);
            background: var(--bg-white);
            color: var(--text-main);
            cursor: pointer;
            transition: var(--transition);
            user-select: none;
        }
        .filter-pill:hover {
            border-color: var(--border-accent);
            color: var(--accent);
            background: var(--accent-dim);
        }
        .filter-pill.active {
            background: var(--primary);
            color: var(--text-on-dark);
            border-color: var(--primary);
        }
        .filter-pill .fa-solid {
            font-size: 0.8rem;
        }
        /* ========== 对比表 ========== */
        .compare-section {
            padding: 24px 0 64px;
        }
        .compare-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }
        .compare-card .table-responsive {
            border-radius: var(--radius-card);
        }
        .compare-table {
            margin-bottom: 0;
            min-width: 860px;
        }
        .compare-table thead th {
            background: var(--primary);
            color: var(--text-on-dark);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 16px 18px;
            border-bottom: none;
            white-space: nowrap;
        }
        .compare-table thead th .version-badge {
            display: inline-block;
            background: rgba(24, 224, 200, 0.18);
            color: var(--accent);
            border-radius: 6px;
            padding: 2px 8px;
            margin-left: 6px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .compare-table thead th .current-tag {
            display: inline-block;
            background: var(--highlight);
            color: #fff;
            border-radius: 6px;
            padding: 1px 7px;
            margin-left: 6px;
            font-size: 0.7rem;
            font-weight: 700;
        }
        .compare-table tbody th {
            background: var(--bg-warm);
            color: var(--text-main);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 14px 18px;
            border-bottom: 1px solid var(--border-light);
            white-space: nowrap;
            min-width: 140px;
        }
        .compare-table tbody td {
            padding: 14px 18px;
            font-size: 0.9rem;
            color: var(--text-main);
            border-bottom: 1px solid var(--border-light);
            vertical-align: middle;
        }
        .compare-table tbody tr:last-child th,
        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }
        .compare-table tbody tr:hover td,
        .compare-table tbody tr:hover th {
            background: rgba(24, 224, 200, 0.05);
        }
        .value-highlight {
            color: var(--highlight);
            font-weight: 600;
        }
        .value-accent {
            color: var(--accent);
            font-weight: 600;
        }
        .value-good {
            color: #2E9E5B;
            font-weight: 600;
        }
        .score-stars {
            color: #F5A623;
            font-size: 0.85rem;
            letter-spacing: 1px;
        }
        /* ========== 结论CTA ========== */
        .conclusion-cta {
            padding: 56px 0;
        }
        .conclusion-card {
            background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark-section) 60%, #3D2A5C 100%);
            border-radius: var(--radius-card);
            padding: 56px 48px;
            color: var(--text-on-dark);
            position: relative;
            overflow: hidden;
        }
        .conclusion-card::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(24, 224, 200, 0.08);
            pointer-events: none;
        }
        .conclusion-card::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -40px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 90, 95, 0.07);
            pointer-events: none;
        }
        .conclusion-card .conclusion-content {
            position: relative;
            z-index: 2;
        }
        .conclusion-card h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .conclusion-card p {
            color: var(--text-on-dark-secondary);
            font-size: 1rem;
            max-width: 560px;
            margin-bottom: 28px;
        }
        .btn-custom-primary {
            background: var(--highlight);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 14px 32px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-custom-primary:hover,
        .btn-custom-primary:focus {
            background: var(--highlight-dark);
            color: #fff;
            box-shadow: 0 8px 24px rgba(255, 90, 95, 0.35);
            transform: translateY(-2px);
        }
        .btn-custom-secondary {
            background: transparent;
            color: var(--accent);
            border: 2px solid var(--accent);
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-custom-secondary:hover,
        .btn-custom-secondary:focus {
            background: var(--accent-dim);
            color: var(--accent);
            border-color: var(--accent);
            transform: translateY(-2px);
        }
        /* ========== 更新亮点 ========== */
        .highlight-section {
            padding: 56px 0;
        }
        .highlight-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
        }
        .highlight-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-accent);
            box-shadow: var(--shadow-card-hover);
        }
        .highlight-card .highlight-img {
            height: 240px;
            overflow: hidden;
        }
        .highlight-card .highlight-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .highlight-card:hover .highlight-img img {
            transform: scale(1.05);
        }
        .highlight-card .highlight-body {
            padding: 24px 24px 28px;
        }
        .highlight-card .highlight-tag {
            display: inline-block;
            background: var(--accent-dim);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 50px;
            padding: 4px 12px;
            margin-bottom: 12px;
        }
        .highlight-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .highlight-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        /* ========== FAQ ========== */
        .faq-section {
            padding: 56px 0 64px;
        }
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: 12px !important;
            margin-bottom: 12px;
            background: var(--bg-white);
            box-shadow: 0 4px 14px rgba(26, 15, 46, 0.04);
            overflow: hidden;
        }
        .faq-accordion .accordion-button {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            background: transparent;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            transition: var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--accent);
            background: transparent;
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px var(--accent-dim);
            border-radius: 12px;
        }
        .faq-accordion .accordion-button::after {
            content: '\f067';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            background-image: none;
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            content: '\f068';
            color: var(--accent);
            transform: none;
        }
        .faq-accordion .accordion-body {
            padding: 0 22px 20px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        /* ========== 相关分类推荐 ========== */
        .related-section {
            padding: 56px 0 64px;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
            height: 100%;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-accent);
            box-shadow: var(--shadow-card-hover);
        }
        .related-card .related-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--accent-dim);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.1rem;
            margin-bottom: 16px;
        }
        .related-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .related-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
            flex-grow: 1;
        }
        .related-card a {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--highlight);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .related-card a:hover {
            color: var(--accent);
        }
        /* ========== 页脚 ========== */
        .footer {
            background: var(--primary);
            color: var(--text-on-dark);
            padding: 64px 0 0;
        }
        .footer .footer-brand {
            font-size: 1.6rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer .footer-brand .logo-icon {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 800;
            font-size: 1.1rem;
        }
        .footer .footer-desc {
            font-size: 0.9rem;
            color: var(--text-on-dark-secondary);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--accent);
        }
        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: var(--text-on-dark-secondary);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 48px;
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-on-dark-secondary);
        }
        /* ========== 响应式 ========== */
        @media (max-width: 991px) {
            .hero-inner {
                min-height: 360px;
            }
            .hero-inner h1 {
                font-size: 2.3rem;
            }
            .conclusion-card {
                padding: 40px 32px;
            }
            .conclusion-card h2 {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 767px) {
            .hero-inner {
                min-height: 320px;
            }
            .hero-inner h1 {
                font-size: 1.9rem;
            }
            .hero-inner .hero-sub {
                font-size: 0.95rem;
            }
            .filter-pill {
                padding: 8px 16px;
                font-size: 0.82rem;
            }
            .compare-section {
                padding: 16px 0 48px;
            }
            .conclusion-card {
                padding: 32px 24px;
                border-radius: 12px;
            }
            .conclusion-card h2 {
                font-size: 1.3rem;
            }
            .highlight-card .highlight-img {
                height: 180px;
            }
            .faq-accordion .accordion-button {
                font-size: 0.9rem;
                padding: 15px 18px;
            }
        }
        @media (max-width: 575px) {
            .top-bar .container {
                justify-content: center;
            }
            .top-bar-right {
                gap: 8px;
            }
            .hero-inner {
                min-height: 300px;
            }
            .hero-inner h1 {
                font-size: 1.6rem;
            }
            .hero-meta {
                gap: 12px;
                flex-direction: column;
            }
            .filter-bar {
                gap: 8px;
            }
            .filter-pill {
                padding: 7px 14px;
                font-size: 0.78rem;
            }
            .compare-table thead th,
            .compare-table tbody th,
            .compare-table tbody td {
                padding: 10px 12px;
                font-size: 0.82rem;
            }
            .btn-custom-primary,
            .btn-custom-secondary {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category6 */
:root {
      --primary: #1A0F2E;
      --primary-dark: #120A20;
      --accent: #18E0C8;
      --accent-dim: rgba(24, 224, 200, 0.1);
      --highlight: #FF5A5F;
      --highlight-dark: #E84A4F;
      --bg-warm: #F7F5F1;
      --bg-white: #FFFFFF;
      --bg-dark-section: #2B1B42;
      --text-main: #1F1B2E;
      --text-secondary: #6E6882;
      --text-on-dark: #FFFFFF;
      --text-on-dark-secondary: #D9D3E8;
      --border-light: rgba(26, 15, 46, 0.08);
      --border-accent: rgba(24, 224, 200, 0.45);
      --radius-card: 16px;
      --radius-btn: 50px;
      --shadow-card: 0 12px 30px rgba(26, 15, 46, 0.10);
      --shadow-card-hover: 0 18px 40px rgba(26, 15, 46, 0.16);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --font-num: "Inter", "Roboto", -apple-system, sans-serif;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: var(--font-sans);
      color: var(--text-main);
      background-color: var(--bg-warm);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
    }
    a {
      color: var(--text-main);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover {
      color: var(--accent);
    }
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 3px;
      border-radius: 4px;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button,
    input,
    select,
    textarea {
      font-family: inherit;
      font-size: inherit;
    }
    .container {
      max-width: 1200px;
    }
    /* 顶部信息条 */
    .top-bar {
      background: var(--primary);
      color: var(--text-on-dark-secondary);
      font-size: 0.8rem;
      min-height: 36px;
      display: flex;
      align-items: center;
      padding: 6px 0;
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
    }
    .top-bar-left {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .top-bar-left a {
      color: var(--text-on-dark-secondary);
      font-weight: 500;
      letter-spacing: 0.3px;
    }
    .top-bar-left a:hover {
      color: var(--accent);
    }
    .top-bar-right {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .top-bar-right a {
      color: var(--text-on-dark-secondary);
      font-size: 12.5px;
      transition: var(--transition);
    }
    .top-bar-right a:hover {
      color: var(--accent);
    }
    .top-bar-divider {
      width: 1px;
      height: 14px;
      background: rgba(255, 255, 255, 0.2);
    }
    /* 主导航 */
    .main-nav {
      background: var(--bg-white);
      min-height: 72px;
      border-bottom: 1px solid var(--border-light);
      position: sticky;
      top: 0;
      z-index: 1040;
      box-shadow: 0 4px 20px rgba(26, 15, 46, 0.06);
    }
    .main-nav .navbar {
      padding: 0;
      min-height: 72px;
    }
    .main-nav .navbar-brand {
      font-size: 1.65rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: 0.5px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .main-nav .navbar-brand .logo-icon {
      width: 42px;
      height: 42px;
      background: linear-gradient(135deg, var(--primary) 0%, #3D2A5C 100%);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-weight: 800;
      font-size: 1.2rem;
      box-shadow: 0 4px 12px rgba(26, 15, 46, 0.25);
      flex-shrink: 0;
    }
    .main-nav .navbar-brand .brand-text {
      line-height: 1.2;
    }
    .main-nav .navbar-brand .brand-sub {
      font-size: 0.7rem;
      font-weight: 400;
      color: var(--text-secondary);
      letter-spacing: 1.2px;
      display: block;
    }
    .main-nav .navbar-nav {
      gap: 4px;
    }
    .main-nav .nav-link {
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 10px 14px !important;
      border-radius: 8px;
      position: relative;
      transition: var(--transition);
    }
    .main-nav .nav-link:hover {
      color: var(--accent);
      background: var(--accent-dim);
    }
    .main-nav .nav-link.active {
      color: var(--highlight);
      background: rgba(255, 90, 95, 0.08);
    }
    .main-nav .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 2px;
      left: 50%;
      transform: translateX(-50%);
      width: 20px;
      height: 3px;
      background: var(--highlight);
      border-radius: 3px;
    }
    .main-nav .navbar-toggler {
      border: 1px solid var(--border-light);
      border-radius: 10px;
      padding: 8px 12px;
      color: var(--primary);
    }
    .main-nav .navbar-toggler:focus {
      box-shadow: 0 0 0 3px var(--accent-dim);
    }
    .main-nav .navbar-toggler-icon {
      background-image: none;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      color: var(--primary);
    }
    /* 面包屑 */
    .breadcrumb-section {
      padding: 24px 0 0;
    }
    .breadcrumb {
      margin: 0;
      font-size: 0.9rem;
    }
    .breadcrumb a {
      color: var(--text-secondary);
    }
    .breadcrumb a:hover {
      color: var(--accent);
    }
    .breadcrumb .active {
      color: var(--highlight);
      font-weight: 500;
    }
    /* Hero */
    .hero-inner {
      position: relative;
      min-height: 420px;
      display: flex;
      align-items: center;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      border-radius: var(--radius-card);
      overflow: hidden;
      margin-top: 20px;
      margin-bottom: 20px;
    }
    .hero-inner::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(26,15,46,0.85) 0%, rgba(43,27,66,0.65) 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      padding: 60px 40px;
      color: var(--text-on-dark);
    }
    .hero-content h1 {
      font-size: 2.5rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
      line-height: 1.2;
    }
    .hero-content h1 span {
      color: var(--accent);
    }
    .hero-content p {
      font-size: 1.1rem;
      color: var(--text-on-dark-secondary);
      max-width: 640px;
      margin-bottom: 28px;
    }
    .hero-badge {
      display: inline-block;
      background: var(--highlight);
      color: #fff;
      padding: 6px 14px;
      border-radius: 30px;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      margin-bottom: 18px;
    }
    .btn-primary-custom {
      background: var(--highlight);
      border: none;
      color: #fff;
      font-weight: 600;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      transition: var(--transition);
    }
    .btn-primary-custom:hover,
    .btn-primary-custom:focus {
      background: var(--highlight-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(255,90,95,0.3);
    }
    .btn-outline-custom {
      background: transparent;
      border: 2px solid var(--accent);
      color: var(--accent);
      font-weight: 600;
      padding: 10px 26px;
      border-radius: var(--radius-btn);
      transition: var(--transition);
    }
    .btn-outline-custom:hover,
    .btn-outline-custom:focus {
      background: var(--accent);
      color: var(--primary);
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(24,224,200,0.25);
    }
    /* 资源列表 */
    .section-padding {
      padding: 80px 0;
    }
    .section-title {
      font-size: 1.9rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .section-desc {
      color: var(--text-secondary);
      font-size: 1.05rem;
      margin-bottom: 32px;
    }
    .filter-buttons {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 32px;
    }
    .filter-btn {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      color: var(--text-main);
      padding: 8px 20px;
      border-radius: 30px;
      font-size: 0.9rem;
      font-weight: 500;
      transition: var(--transition);
      cursor: pointer;
    }
    .filter-btn:hover {
      border-color: var(--accent);
      color: var(--accent);
    }
    .filter-btn.active {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
    }
    .resource-card {
      background: var(--bg-white);
      border-radius: var(--radius-card);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      transition: var(--transition);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .resource-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-card-hover);
      border-color: var(--border-accent);
    }
    .resource-thumb {
      position: relative;
      height: 180px;
      overflow: hidden;
      background-size: cover;
      background-position: center;
    }
    .resource-thumb .file-type {
      position: absolute;
      top: 16px;
      left: 16px;
      background: rgba(255,255,255,0.9);
      color: var(--primary);
      width: 42px;
      height: 42px;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      font-weight: 700;
      box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    }
    .resource-body {
      padding: 20px 22px 22px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .resource-body h3 {
      font-size: 1.15rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .resource-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px 16px;
      font-size: 0.8rem;
      color: var(--text-secondary);
      margin-bottom: 12px;
    }
    .resource-meta i {
      color: var(--accent);
      margin-right: 4px;
    }
    .resource-desc {
      font-size: 0.9rem;
      color: var(--text-secondary);
      line-height: 1.6;
      flex: 1;
    }
    .resource-footer {
      margin-top: 16px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .btn-download {
      background: var(--accent);
      color: var(--primary-dark);
      font-weight: 600;
      padding: 8px 20px;
      border-radius: 30px;
      font-size: 0.85rem;
      transition: var(--transition);
      border: none;
    }
    .btn-download:hover {
      background: #0ec7b4;
      color: var(--primary-dark);
      transform: translateY(-2px);
    }
    .resource-tag {
      background: var(--accent-dim);
      color: var(--accent);
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 0.75rem;
      font-weight: 500;
    }
    /* 相关分类 */
    .related-cat-card {
      background: var(--bg-dark-section);
      border-radius: var(--radius-card);
      padding: 24px;
      color: var(--text-on-dark);
      transition: var(--transition);
      height: 100%;
      border: 1px solid rgba(255,255,255,0.05);
    }
    .related-cat-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-accent);
      background: #321f50;
    }
    .related-cat-card h4 {
      font-size: 1.1rem;
      margin-bottom: 8px;
      color: #fff;
    }
    .related-cat-card p {
      font-size: 0.85rem;
      color: var(--text-on-dark-secondary);
      margin-bottom: 16px;
    }
    .related-cat-card a {
      color: var(--accent);
      font-weight: 600;
    }
    .related-cat-card a:hover {
      color: #0ec7b4;
    }
    /* CTA */
    .cta-band {
      background: var(--primary);
      border-radius: var(--radius-card);
      padding: 50px 40px;
      color: #fff;
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .cta-band::after {
      content: '';
      position: absolute;
      top: -60px;
      right: -60px;
      width: 200px;
      height: 200px;
      background: radial-gradient(circle, rgba(24,224,200,0.2) 0%, transparent 70%);
      border-radius: 50%;
    }
    .cta-band h2 {
      font-size: 1.8rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .cta-band p {
      color: var(--text-on-dark-secondary);
      max-width: 600px;
      margin: 0 auto 28px;
    }
    /* FAQ */
    .faq-section .accordion-item {
      border: none;
      border-bottom: 1px solid var(--border-light);
      background: transparent;
    }
    .faq-section .accordion-button {
      background: transparent;
      font-weight: 600;
      font-size: 1rem;
      color: var(--text-main);
      padding: 18px 0;
      box-shadow: none;
    }
    .faq-section .accordion-button:not(.collapsed) {
      color: var(--primary);
      background: transparent;
    }
    .faq-section .accordion-button:focus {
      box-shadow: none;
      border-color: transparent;
    }
    .faq-section .accordion-button::after {
      filter: brightness(0) invert(0.6);
    }
    .faq-section .accordion-body {
      padding: 0 0 18px;
      color: var(--text-secondary);
    }
    /* 页脚 */
    .footer {
      background: var(--primary);
      color: var(--text-on-dark-secondary);
      padding: 64px 0 24px;
    }
    .footer h4 {
      color: #fff;
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 18px;
    }
    .footer ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer ul li {
      margin-bottom: 10px;
    }
    .footer ul li a {
      color: var(--text-on-dark-secondary);
      font-size: 0.9rem;
      transition: var(--transition);
    }
    .footer ul li a:hover {
      color: var(--accent);
    }
    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.5rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }
    .footer-brand .logo-icon {
      width: 42px;
      height: 42px;
      background: linear-gradient(135deg, #3D2A5C 0%, var(--primary-dark) 100%);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-weight: 800;
      font-size: 1.2rem;
    }
    .footer-desc {
      font-size: 0.9rem;
      line-height: 1.6;
      color: var(--text-on-dark-secondary);
      max-width: 320px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 20px;
      margin-top: 40px;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 10px;
      font-size: 0.8rem;
    }
    /* 响应式 */
    @media (max-width: 991.98px) {
      .main-nav .navbar-collapse {
        background: var(--bg-white);
        border-radius: 12px;
        border: 1px solid var(--border-light);
        padding: 16px;
        box-shadow: var(--shadow-card);
      }
      .main-nav .nav-link.active::after {
        display: none;
      }
      .main-nav .nav-link {
        padding: 10px 12px !important;
      }
      .hero-inner {
        min-height: 360px;
      }
      .hero-content h1 {
        font-size: 2rem;
      }
    }
    @media (max-width: 767.98px) {
      .top-bar {
        font-size: 0.7rem;
      }
      .top-bar-left a,
      .top-bar-right a {
        font-size: 0.7rem;
      }
      .hero-content {
        padding: 40px 20px;
      }
      .hero-content h1 {
        font-size: 1.7rem;
      }
      .section-padding {
        padding: 56px 0;
      }
      .resource-thumb {
        height: 150px;
      }
      .footer {
        padding: 40px 0 20px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }
    @media (max-width: 575.98px) {
      .btn-primary-custom,
      .btn-outline-custom {
        display: block;
        width: 100%;
        text-align: center;
        margin-bottom: 10px;
      }
      .hero-badge {
        font-size: 0.7rem;
      }
    }

/* roulang page: category5 */
:root {
            --primary: #1A0F2E;
            --primary-dark: #120A20;
            --accent: #18E0C8;
            --accent-dim: rgba(24, 224, 200, 0.1);
            --highlight: #FF5A5F;
            --highlight-dark: #E84A4F;
            --bg-warm: #F7F5F1;
            --bg-white: #FFFFFF;
            --bg-dark-section: #2B1B42;
            --text-main: #1F1B2E;
            --text-secondary: #6E6882;
            --text-on-dark: #FFFFFF;
            --text-on-dark-secondary: #D9D3E8;
            --border-light: rgba(26, 15, 46, 0.08);
            --border-accent: rgba(24, 224, 200, 0.45);
            --radius-card: 16px;
            --radius-btn: 50px;
            --shadow-card: 0 12px 30px rgba(26, 15, 46, 0.10);
            --shadow-card-hover: 0 18px 40px rgba(26, 15, 46, 0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto", -apple-system, sans-serif;
        }

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

        body {
            font-family: var(--font-sans);
            color: var(--text-main);
            background-color: var(--bg-warm);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--text-main);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

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

        .container {
            max-width: 1200px;
        }

        /* ========== 顶部信息条 ========== */
        .top-bar {
            background: var(--primary-dark);
            color: var(--text-on-dark-secondary);
            font-size: 0.8rem;
            min-height: 36px;
            display: flex;
            align-items: center;
            padding: 4px 0;
            position: relative;
            z-index: 1050;
        }
        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.78rem;
            color: var(--text-on-dark-secondary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .top-bar-left .fa-solid,
        .top-bar-left .fa-regular {
            color: var(--accent);
            font-size: 12px;
        }
        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .top-bar-right a {
            color: var(--text-on-dark-secondary);
            font-size: 0.78rem;
            transition: var(--transition);
        }
        .top-bar-right a:hover {
            color: var(--accent);
        }
        .top-bar-divider {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, 0.2);
        }

        /* ========== 主导航 ========== */
        .main-nav {
            background: var(--bg-white);
            min-height: 72px;
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1040;
            box-shadow: 0 4px 20px rgba(26, 15, 46, 0.06);
        }
        .main-nav .navbar {
            padding: 0;
            min-height: 72px;
        }
        .main-nav .navbar-brand {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .main-nav .navbar-brand .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary) 0%, #3D2A5C 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 4px 12px rgba(26, 15, 46, 0.25);
            flex-shrink: 0;
        }
        .main-nav .navbar-brand .brand-text {
            line-height: 1.2;
        }
        .main-nav .navbar-brand .brand-sub {
            font-size: 0.7rem;
            font-weight: 400;
            color: var(--text-secondary);
            letter-spacing: 1.2px;
            display: block;
        }
        .main-nav .navbar-nav {
            gap: 4px;
        }
        .main-nav .nav-link {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-main);
            padding: 10px 14px !important;
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
        }
        .main-nav .nav-link:hover {
            color: var(--accent);
            background: var(--accent-dim);
        }
        .main-nav .nav-link.active {
            color: var(--highlight);
            background: rgba(255, 90, 95, 0.08);
        }
        .main-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--highlight);
            border-radius: 3px;
        }
        .main-nav .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 10px;
            padding: 8px 12px;
            color: var(--primary);
        }
        .main-nav .navbar-toggler:focus {
            box-shadow: 0 0 0 3px var(--accent-dim);
        }
        .main-nav .navbar-toggler-icon {
            background-image: none;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-section {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 12px 0;
        }
        .breadcrumb-section .breadcrumb {
            margin: 0;
            font-size: 0.85rem;
        }
        .breadcrumb-section .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb-section .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb-section .breadcrumb .active {
            color: var(--text-main);
            font-weight: 500;
        }
        .breadcrumb-section .breadcrumb-item + .breadcrumb-item::before {
            content: '/';
            color: var(--text-secondary);
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 80px 0;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,15,46,0.88) 0%, rgba(26,15,46,0.62) 50%, rgba(26,15,46,0.78) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(24,224,200,0.12);
            border: 1px solid var(--border-accent);
            color: var(--accent);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }
        .hero-badge .fa-solid {
            font-size: 0.7rem;
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 700;
            color: var(--text-on-dark);
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .hero h1 .highlight-text {
            color: var(--accent);
            position: relative;
        }
        .hero h1 .highlight-orange {
            color: var(--highlight);
        }
        .hero-sub {
            font-size: 1.1rem;
            color: var(--text-on-dark-secondary);
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary-custom {
            background: var(--highlight);
            border: none;
            border-radius: var(--radius-btn);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 13px 28px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 8px 24px rgba(255,90,95,0.35);
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:focus {
            background: var(--highlight-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(255,90,95,0.45);
        }
        .btn-outline-custom {
            background: transparent;
            border: 1px solid var(--border-accent);
            border-radius: var(--radius-btn);
            color: var(--accent);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 13px 28px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-custom:hover,
        .btn-outline-custom:focus {
            background: var(--accent-dim);
            color: var(--accent);
            border-color: var(--accent);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            margin-top: 32px;
        }
        .hero-stat-item {
            display: flex;
            align-items: baseline;
            gap: 8px;
        }
        .hero-stat-num {
            font-family: var(--font-num);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--accent);
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-on-dark-secondary);
        }

        /* ========== 大图案例卡片 ========== */
        .case-section {
            padding: 96px 0;
            background: var(--bg-warm);
        }
        .case-section .section-header {
            margin-bottom: 48px;
        }
        .case-section .section-header h2 {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .case-section .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0;
        }
        .case-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
            margin-bottom: 32px;
        }
        .case-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--border-accent);
        }
        .case-card .row {
            margin: 0;
        }
        .case-card .case-image-wrap {
            padding: 0;
            position: relative;
            min-height: 280px;
            overflow: hidden;
        }
        .case-card .case-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .case-card .case-content {
            padding: 32px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .case-tag-list {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }
        .case-tag {
            display: inline-block;
            background: var(--accent-dim);
            color: #0FAF9A;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            letter-spacing: 0.3px;
        }
        .case-tag.orange {
            background: rgba(255,90,95,0.1);
            color: var(--highlight);
        }
        .case-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.4;
            margin-bottom: 12px;
        }
        .case-card .case-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 18px;
        }
        .case-metrics {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 18px;
            padding-top: 16px;
            border-top: 1px solid var(--border-light);
        }
        .case-metric {
            display: flex;
            flex-direction: column;
        }
        .case-metric .metric-num {
            font-family: var(--font-num);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--highlight);
            line-height: 1.2;
        }
        .case-metric .metric-label {
            font-size: 0.78rem;
            color: var(--text-secondary);
        }
        .case-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .case-link:hover {
            color: var(--highlight);
            gap: 10px;
        }

        /* ========== 亮点/信任条 ========== */
        .trust-bar {
            background: var(--bg-dark-section);
            padding: 48px 0;
        }
        .trust-bar .trust-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 12px 16px;
        }
        .trust-bar .trust-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(24,224,200,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .trust-bar .trust-num {
            font-family: var(--font-num);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-on-dark);
            line-height: 1.2;
        }
        .trust-bar .trust-text {
            font-size: 0.85rem;
            color: var(--text-on-dark-secondary);
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 80px 0;
            background: var(--bg-white);
        }
        .faq-section .section-header {
            margin-bottom: 40px;
        }
        .faq-section .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .faq-section .section-header p {
            color: var(--text-secondary);
            font-size: 1rem;
        }
        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border-light);
            border-radius: 0;
            background: transparent;
        }
        .accordion-custom .accordion-header {
            margin: 0;
        }
        .accordion-custom .accordion-button {
            background: transparent;
            border: none;
            color: var(--text-main);
            font-weight: 600;
            font-size: 1rem;
            padding: 20px 0;
            box-shadow: none;
            border-radius: 0;
            transition: var(--transition);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--highlight);
            background: transparent;
            box-shadow: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .accordion-custom .accordion-button::after {
            content: '\f067';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            background-image: none;
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            content: '\f068';
            color: var(--highlight);
            transform: rotate(180deg);
        }
        .accordion-custom .accordion-body {
            padding: 0 0 20px 0;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
        }

        /* ========== 相关分类 ========== */
        .related-section {
            padding: 80px 0;
            background: var(--bg-warm);
        }
        .related-section .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .related-section .section-header p {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-bottom: 36px;
        }
        .related-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px 22px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
            height: 100%;
        }
        .related-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--border-accent);
        }
        .related-card .rel-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--accent-dim);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0FAF9A;
            font-size: 1rem;
        }
        .related-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin: 0;
        }
        .related-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }
        .related-card a {
            font-size: 0.85rem;
            color: var(--accent);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .related-card a:hover {
            color: var(--highlight);
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark-section) 100%);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(24,224,200,0.06);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -50px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255,90,95,0.05);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--text-on-dark);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-on-dark-secondary);
            max-width: 580px;
            margin: 0 auto 32px;
        }
        .cta-section .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== 页脚 ========== */
        .footer {
            background: var(--primary-dark);
            color: var(--text-on-dark-secondary);
            padding: 64px 0 24px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-on-dark);
            margin-bottom: 12px;
        }
        .footer-brand .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, #2B1B42 0%, #3D2A5C 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 800;
            font-size: 1.1rem;
        }
        .footer-desc {
            font-size: 0.9rem;
            color: var(--text-on-dark-secondary);
            line-height: 1.8;
            max-width: 300px;
        }
        .footer h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-on-dark);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 8px;
        }
        .footer ul a {
            color: var(--text-on-dark-secondary);
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .footer ul a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            margin-top: 48px;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-on-dark-secondary);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1199px) {
            .hero h1 {
                font-size: 2.8rem;
            }
            .case-card .case-content {
                padding: 28px 28px;
            }
        }

        @media (max-width: 991px) {
            .main-nav .navbar-collapse {
                background: var(--bg-white);
                padding: 16px;
                border-radius: 12px;
                margin-top: 8px;
                box-shadow: 0 12px 30px rgba(26,15,46,0.12);
            }
            .main-nav .nav-link {
                padding: 12px 16px !important;
            }
            .main-nav .nav-link.active::after {
                display: none;
            }
            .hero {
                min-height: 440px;
                padding: 64px 0;
            }
            .hero h1 {
                font-size: 2.3rem;
            }
            .case-section {
                padding: 64px 0;
            }
            .case-card .case-image-wrap {
                min-height: 220px;
            }
            .case-card .case-content {
                padding: 24px;
            }
            .case-card .case-image-wrap img {
                position: relative;
                height: 220px;
            }
            .faq-section,
            .related-section,
            .cta-section {
                padding: 56px 0;
            }
        }

        @media (max-width: 767px) {
            .top-bar {
                font-size: 0.7rem;
                min-height: 30px;
            }
            .top-bar-left {
                font-size: 0.7rem;
            }
            .top-bar-right a {
                font-size: 0.7rem;
            }
            .top-bar-divider {
                height: 10px;
            }
            .main-nav .navbar-brand {
                font-size: 1.35rem;
            }
            .main-nav .navbar-brand .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
                border-radius: 10px;
            }
            .hero {
                min-height: 400px;
                padding: 48px 0;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero-sub {
                font-size: 0.95rem;
            }
            .hero-actions .btn-primary-custom,
            .hero-actions .btn-outline-custom {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                gap: 16px;
                margin-top: 20px;
            }
            .hero-stat-num {
                font-size: 1.3rem;
            }
            .case-section {
                padding: 48px 0;
            }
            .case-section .section-header h2 {
                font-size: 1.8rem;
            }
            .case-card .row {
                flex-direction: column;
            }
            .case-card .case-image-wrap {
                min-height: 200px;
            }
            .case-card .case-image-wrap img {
                position: relative;
                height: 200px;
            }
            .case-card .case-content {
                padding: 20px;
            }
            .case-card h3 {
                font-size: 1.25rem;
            }
            .case-metrics {
                gap: 16px;
            }
            .case-metric .metric-num {
                font-size: 1.2rem;
            }
            .trust-bar .trust-item {
                padding: 8px 8px;
            }
            .trust-bar .trust-num {
                font-size: 1.4rem;
            }
            .faq-section .section-header h2 {
                font-size: 1.8rem;
            }
            .related-section .section-header h2 {
                font-size: 1.7rem;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .footer {
                padding: 48px 0 16px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 575px) {
            .hero {
                min-height: 380px;
                padding: 40px 0;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-badge {
                font-size: 0.72rem;
                padding: 4px 12px;
            }
            .hero-sub {
                font-size: 0.88rem;
            }
            .case-card .case-content {
                padding: 16px;
            }
            .case-card .case-desc {
                font-size: 0.88rem;
            }
            .case-tag {
                font-size: 0.7rem;
                padding: 3px 10px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .accordion-custom .accordion-button {
                font-size: 0.9rem;
                padding: 16px 0;
            }
            .accordion-custom .accordion-body {
                font-size: 0.88rem;
            }
        }