/* roulang page: index */
/* ============ CSS 变量 ============ */
        :root {
            --brand: #FF6A00;
            --brand-hover: #FF8B26;
            --brand-gold: #F5B841;
            --bg-dark: #0B0B0F;
            --bg-card: #15151D;
            --bg-card-hover: #1C1C27;
            --bg-light: #F7F5F0;
            --text-primary: #F7F5F0;
            --text-secondary: #9CA3AF;
            --text-light: #6B7280;
            --border-dark: rgba(255, 255, 255, 0.08);
            --border-light: rgba(17, 24, 39, 0.08);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-image: 16px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.2);
            --shadow-hover: 0 12px 28px rgba(0, 0, 0, 0.35);
            --transition: 0.25s ease;
        }

        /* ============ Reset & Base ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition), opacity var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--brand);
        }
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(255, 106, 0, 0.3);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button {
            border: none;
            background: none;
            cursor: pointer;
            transition: transform 0.2s ease, background var(--transition), color var(--transition), box-shadow var(--transition), opacity var(--transition);
        }
        button:active {
            transform: scale(0.97);
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ============ Header 双层导航 ============ */
        .site-header {
            position: relative;
            z-index: 1000;
            background: rgba(11, 11, 15, 0.95);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .site-header .main-nav-wrap {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .site-header .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.4rem;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }
        .site-header .logo-area i {
            color: var(--brand);
            font-size: 1.6rem;
        }
        .site-header .logo-area span {
            color: var(--brand);
        }
        .site-header .nav-menu-center {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header .nav-menu-center a {
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 6px;
            position: relative;
            transition: color var(--transition), background var(--transition);
        }
        .site-header .nav-menu-center a:hover,
        .site-header .nav-menu-center a.active {
            color: var(--brand);
            background: rgba(255, 106, 0, 0.06);
        }
        .site-header .nav-menu-center a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--brand);
            border-radius: 2px;
        }
        .header-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-cta .btn-download {
            background: var(--brand);
            color: #111;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: var(--radius-btn);
            font-size: 0.9rem;
            box-shadow: 0 4px 16px rgba(255, 106, 0, 0.25);
        }
        .header-cta .btn-download:hover {
            background: var(--brand-hover);
            color: #111;
            box-shadow: 0 6px 20px rgba(255, 138, 38, 0.35);
            transform: translateY(-1px);
        }
        .navbar-toggler-custom {
            width: 44px;
            height: 44px;
            display: none;
            align-items: center;
            justify-content: center;
            color: var(--text-primary);
            font-size: 1.5rem;
            background: transparent;
            border: 1px solid var(--border-dark);
            border-radius: 8px;
        }
        .navbar-toggler-custom:hover {
            color: var(--brand);
            border-color: var(--brand);
        }

        /* 公告栏 */
        .notice-bar {
            background: #17171F;
            border-top: 1px solid rgba(255, 255, 255, 0.03);
            height: 40px;
            display: flex;
            align-items: center;
        }
        .notice-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .notice-left {
            font-size: 0.82rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .notice-left i {
            color: var(--brand-gold);
            font-size: 0.7rem;
        }
        .notice-left .notice-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--brand);
            display: inline-block;
            flex-shrink: 0;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }
        .notice-right {
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .notice-right::-webkit-scrollbar {
            display: none;
        }
        .notice-right .chip {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 4px 14px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            font-size: 0.78rem;
            color: var(--text-secondary);
            font-weight: 500;
            transition: all var(--transition);
        }
        .notice-right .chip i {
            font-size: 0.6rem;
        }
        .notice-right .chip:hover {
            background: var(--brand);
            color: #111;
            border-color: var(--brand);
        }

        /* 滚动后固定导航 */
        .site-header.fixed-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(11, 11, 15, 0.88);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-header.fixed-nav .notice-bar {
            display: none;
        }

        /* 移动端下拉 */
        .mobile-menu {
            display: none;
            background: var(--bg-card);
            border-top: 1px solid var(--border-dark);
            padding: 12px 24px 20px;
        }
        .mobile-menu.show {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            color: var(--text-primary);
            border-radius: 8px;
            font-size: 0.95rem;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--brand);
            background: rgba(255, 106, 0, 0.06);
        }
        .mobile-menu .btn-download {
            display: block;
            text-align: center;
            margin-top: 12px;
            background: var(--brand);
            color: #111;
            font-weight: 600;
            padding: 12px;
            border-radius: 8px;
        }

        /* ============ Hero ============ */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, rgba(11, 11, 15, 0.92) 0%, rgba(11, 11, 15, 0.78) 50%, rgba(11, 11, 15, 0.65) 100%), url('/assets/images/backpic/back-1.jpg') center center/cover no-repeat;
            padding: 96px 0 88px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 80% 20%, rgba(255, 106, 0, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 106, 0, 0.15);
            border: 1px solid rgba(255, 106, 0, 0.3);
            color: var(--brand-gold);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 8px;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .hero-badge i {
            font-size: 0.7rem;
        }
        .hero-title {
            font-size: clamp(2rem, 4vw, 3.4rem);
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        .hero-title .brand-highlight {
            color: var(--brand);
        }
        .hero-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            max-width: 540px;
            margin-bottom: 28px;
        }
        .hero-toc {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            margin-bottom: 32px;
            max-width: 520px;
        }
        .hero-toc .toc-title {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-secondary);
            text-transform: none;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .hero-toc .toc-title i {
            color: var(--brand);
            font-size: 0.7rem;
        }
        .hero-toc ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .hero-toc ul li {
            display: flex;
            align-items: baseline;
            gap: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.8);
            padding: 6px 0;
            line-height: 1.5;
        }
        .hero-toc ul li .toc-num {
            color: var(--brand);
            font-weight: 600;
            font-size: 0.8rem;
            min-width: 24px;
        }
        .hero-toc ul li:hover {
            color: var(--brand-gold);
            cursor: default;
        }
        .hero-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .hero-stats .stat-item {
            display: flex;
            flex-direction: column;
        }
        .hero-stats .stat-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        .hero-stats .stat-num i {
            color: var(--brand);
            font-size: 0.8rem;
            vertical-align: middle;
            margin-left: 2px;
        }
        .hero-stats .stat-label {
            font-size: 0.78rem;
            color: var(--text-secondary);
            margin-top: 2px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-brand-primary {
            background: var(--brand);
            color: #111;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 0.95rem;
            box-shadow: 0 4px 16px rgba(255, 106, 0, 0.3);
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .btn-brand-primary:hover {
            background: var(--brand-hover);
            color: #111;
            box-shadow: 0 6px 22px rgba(255, 138, 38, 0.4);
            transform: translateY(-2px);
        }
        .btn-brand-outline {
            background: transparent;
            color: var(--text-primary);
            font-weight: 500;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 0.95rem;
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: all var(--transition);
        }
        .btn-brand-outline:hover {
            border-color: var(--brand);
            color: var(--brand);
            background: rgba(255, 106, 0, 0.04);
        }

        /* Hero 右侧白皮书卡 */
        .hero-report-wrap {
            position: relative;
            padding: 20px 0 20px 20px;
        }
        .hero-report-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-image);
            padding: 16px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
            max-width: 380px;
            margin-left: auto;
            transition: transform 0.4s ease, box-shadow 0.4s ease;
        }
        .hero-report-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 24px 50px rgba(0, 0, 0, 0.5);
        }
        .hero-report-card .report-img {
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 14px;
        }
        .hero-report-card .report-img img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .hero-report-card .report-title {
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .hero-report-card .report-sub {
            font-size: 0.8rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .hero-report-card .report-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            padding-top: 12px;
            margin-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.75rem;
            color: var(--text-secondary);
        }
        .hero-report-card .report-meta i {
            color: var(--brand);
            font-size: 0.7rem;
        }

        /* 留资下载表单 */
        .hero-form-wrap {
            margin-top: 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 18px;
            max-width: 380px;
            margin-left: auto;
        }
        .hero-form-wrap .form-label {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin-bottom: 10px;
            display: block;
        }
        .hero-form-wrap .form-row {
            display: flex;
            gap: 8px;
        }
        .hero-form-wrap input[type="email"] {
            flex: 1;
            background: #16161E;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            padding: 10px 14px;
            color: var(--text-primary);
            font-size: 0.88rem;
            transition: border-color var(--transition), box-shadow var(--transition);
            min-width: 0;
        }
        .hero-form-wrap input[type="email"]:focus {
            outline: none;
            border-color: var(--brand);
            box-shadow: 0 0 0 4px rgba(255, 106, 0, 0.15);
        }
        .hero-form-wrap input[type="email"]::placeholder {
            color: rgba(255, 255, 255, 0.3);
        }
        .hero-form-wrap .btn-submit {
            background: var(--brand);
            color: #111;
            font-weight: 600;
            font-size: 0.85rem;
            padding: 10px 18px;
            border-radius: 8px;
            white-space: nowrap;
            box-shadow: 0 2px 10px rgba(255, 106, 0, 0.25);
        }
        .hero-form-wrap .btn-submit:hover {
            background: var(--brand-hover);
        }
        .hero-form-wrap .form-tip {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.3);
            margin-top: 10px;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ============ 区块通用 ============ */
        .section-block {
            padding: 96px 0;
        }
        .section-darker {
            background: #0E0E14;
        }
        .section-light {
            background: var(--bg-light);
            color: #111827;
        }
        .section-light .section-title,
        .section-light .h2-title {
            color: #111827;
        }
        .section-light .section-desc,
        .section-light .desc {
            color: #6B7280;
        }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--text-primary);
            letter-spacing: -0.3px;
        }
        .section-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-head {
            text-align: center;
            margin-bottom: 56px;
        }

        /* ============ 资讯区 ============ */
        .news-section {
            padding: 80px 0;
            background: var(--bg-dark);
        }
        .news-left-col {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-card);
            padding: 24px;
            height: 100%;
        }
        .news-left-col .news-heading {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }
        .news-left-col .news-heading h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0;
        }
        .news-left-col .news-heading .more-link {
            font-size: 0.8rem;
            color: var(--text-secondary);
        }
        .news-left-col .news-heading .more-link:hover {
            color: var(--brand);
        }
        .news-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .news-list li {
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .news-list li:last-child {
            border-bottom: none;
        }
        .news-list .news-meta {
            font-size: 0.75rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 4px;
        }
        .news-list .news-meta i {
            font-size: 0.6rem;
        }
        .news-list .news-title {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-primary);
            line-height: 1.5;
            transition: color var(--transition);
            display: block;
        }
        .news-list .news-title:hover {
            color: var(--brand);
        }
        .news-list .news-excerpt {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.5;
            margin-top: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-right-col {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-card);
            padding: 20px;
        }
        .sidebar-card h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4::before {
            content: '';
            width: 3px;
            height: 16px;
            background: var(--brand);
            border-radius: 3px;
        }
        .side-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .side-tags .tag {
            padding: 5px 12px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.75rem;
            color: var(--text-secondary);
            background: transparent;
            transition: all var(--transition);
        }
        .side-tags .tag:hover {
            color: var(--brand);
            border-color: var(--brand);
            background: rgba(255, 106, 0, 0.06);
        }
        .side-rank {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .side-rank li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .side-rank li:last-child {
            border-bottom: none;
        }
        .side-rank .rank-num {
            width: 24px;
            height: 24px;
            border-radius: 6px;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-secondary);
            font-size: 0.75rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .side-rank li:nth-child(1) .rank-num {
            background: rgba(255, 106, 0, 0.2);
            color: var(--brand);
        }
        .side-rank li:nth-child(2) .rank-num {
            background: rgba(245, 184, 65, 0.15);
            color: var(--brand-gold);
        }
        .side-rank li:nth-child(3) .rank-num {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-secondary);
        }
        .side-rank .rank-text {
            font-size: 0.85rem;
            color: var(--text-primary);
            line-height: 1.4;
            transition: color var(--transition);
            cursor: pointer;
        }
        .side-rank .rank-text:hover {
            color: var(--brand);
        }

        /* ============ 服务区（功能） ============ */
        .service-section {
            padding: 96px 0;
            background: var(--bg-card);
            border-top: 1px solid var(--border-dark);
            border-bottom: 1px solid var(--border-dark);
        }
        .feature-card {
            background: var(--bg-dark);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            height: 100%;
            transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--brand), transparent);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 106, 0, 0.4);
            box-shadow: var(--shadow-hover);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 1.3rem;
            transition: transform var(--transition);
        }
        .feature-card:hover .feature-icon {
            transform: scale(1.08) rotate(-2deg);
        }
        .feature-card .icon-brand {
            background: rgba(255, 106, 0, 0.15);
            color: var(--brand);
        }
        .feature-card .icon-gold {
            background: rgba(245, 184, 65, 0.15);
            color: var(--brand-gold);
        }
        .feature-card .icon-white {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
        }
        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            letter-spacing: -0.2px;
        }
        .feature-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ============ 使用场景 ============ */
        .scenario-section {
            padding: 96px 0;
            background: var(--bg-dark);
        }
        .scenario-row {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 64px;
            flex-wrap: wrap;
        }
        .scenario-row:last-child {
            margin-bottom: 0;
        }
        .scenario-row:nth-child(even) {
            flex-direction: row-reverse;
        }
        .scenario-img {
            flex: 1 1 46%;
            border-radius: var(--radius-image);
            overflow: hidden;
            position: relative;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
        }
        .scenario-img img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            display: block;
            transition: transform 0.6s ease;
        }
        .scenario-img:hover img {
            transform: scale(1.03);
        }
        .scenario-img .img-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(255, 106, 0, 0.9);
            color: #111;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .scenario-content {
            flex: 1 1 46%;
            position: relative;
            padding: 20px 0;
        }
        .scenario-content .scenario-num {
            font-size: 4rem;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1px rgba(255, 255, 255, 0.2);
            position: absolute;
            top: -10px;
            left: -5px;
            z-index: 0;
            line-height: 1;
            pointer-events: none;
        }
        .scenario-content h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .scenario-content p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.8;
            position: relative;
            z-index: 1;
            margin-bottom: 16px;
        }
        .scenario-content .scenario-link {
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--brand);
            position: relative;
            z-index: 1;
        }
        .scenario-content .scenario-link i {
            transition: transform var(--transition);
            font-size: 0.7rem;
        }
        .scenario-content .scenario-link:hover i {
            transform: translateX(4px);
        }

        /* ============ App 区 ============ */
        .app-section {
            padding: 96px 0;
            background: linear-gradient(160deg, #0E0E14 0%, #0B0B0F 50%, #12121A 100%);
            position: relative;
            border-top: 1px solid var(--border-dark);
        }
        .app-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.jpg') center center/cover no-repeat;
            opacity: 0.06;
            pointer-events: none;
        }
        .app-section .container {
            position: relative;
            z-index: 2;
        }
        .metric-strip {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-card);
            padding: 32px 40px;
            margin-bottom: 56px;
        }
        .metric-item {
            text-align: center;
            flex: 1 1 200px;
            margin: 8px 0;
        }
        .metric-item .metric-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }
        .metric-item .metric-num i {
            color: var(--brand);
            font-size: 0.8rem;
            vertical-align: middle;
        }
        .metric-item .metric-label {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }
        .version-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .version-card {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            position: relative;
            transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
        }
        .version-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 106, 0, 0.3);
            box-shadow: var(--shadow-hover);
        }
        .version-card.featured {
            border-color: var(--brand);
            box-shadow: 0 8px 32px rgba(255, 106, 0, 0.15);
            transform: scale(1.03);
            z-index: 2;
            background: linear-gradient(170deg, #191920 0%, #15151D 100%);
        }
        .version-card.featured:hover {
            transform: scale(1.03) translateY(-4px);
        }
        .version-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--brand);
            color: #111;
            font-size: 0.72rem;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 999px;
            white-space: nowrap;
        }
        .version-card .version-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .version-card .version-sub {
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }
        .version-card .version-price {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.1;
            margin-bottom: 4px;
        }
        .version-card .version-price .per {
            font-size: 0.85rem;
            font-weight: 400;
            color: var(--text-secondary);
            margin-left: 4px;
        }
        .version-card .version-desc {
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin-bottom: 20px;
            line-height: 1.5;
        }
        .version-card .version-features {
            list-style: none;
            margin: 0 0 24px;
            padding: 0;
            flex: 1;
        }
        .version-card .version-features li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--text-primary);
            padding: 6px 0;
            line-height: 1.5;
        }
        .version-card .version-features li i {
            color: var(--brand);
            font-size: 0.75rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .version-card .version-features li.off {
            color: rgba(255, 255, 255, 0.35);
        }
        .version-card .version-features li.off i {
            color: rgba(255, 255, 255, 0.2);
        }
        .version-card .btn-version {
            display: block;
            text-align: center;
            padding: 11px;
            border-radius: var(--radius-btn);
            font-size: 0.9rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition);
        }
        .version-card .btn-version:hover {
            background: var(--brand);
            color: #111;
            border-color: var(--brand);
        }
        .version-card.featured .btn-version {
            background: var(--brand);
            color: #111;
            border-color: var(--brand);
        }
        .version-card.featured .btn-version:hover {
            background: var(--brand-hover);
        }

        /* ============ FAQ 区 ============ */
        .faq-section {
            padding: 96px 0;
            background: var(--bg-light);
            color: #111827;
        }
        .faq-section .section-title {
            color: #111827;
        }
        .faq-section .section-desc {
            color: #6B7280;
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid rgba(17, 24, 39, 0.1);
        }
        .faq-item:first-child {
            border-top: 1px solid rgba(17, 24, 39, 0.1);
        }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            font-size: 1rem;
            font-weight: 600;
            color: #111827;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
            transition: color var(--transition);
        }
        .faq-item .faq-question:hover {
            color: var(--brand);
        }
        .faq-item .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(17, 24, 39, 0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: #111827;
            flex-shrink: 0;
            transition: transform 0.3s ease, background var(--transition), color var(--transition);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--brand);
            color: #111;
        }
        .faq-answer {
            padding-bottom: 20px;
            font-size: 0.9rem;
            color: #6B7280;
            line-height: 1.8;
        }

        /* ============ 关于区 ============ */
        .about-section {
            padding: 96px 0;
            background: var(--bg-dark);
        }
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .about-content h2 {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .about-content p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .about-commit {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-card);
            padding: 28px;
            display: flex;
            gap: 16px;
            margin-top: 24px;
        }
        .about-commit .commit-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(255, 106, 0, 0.12);
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1rem;
        }
        .about-commit .commit-text h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .about-commit .commit-text p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }
        .about-visual {
            position: relative;
            border-radius: var(--radius-image);
            overflow: hidden;
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
        }
        .about-visual img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            display: block;
            transition: transform 0.6s ease;
        }
        .about-visual:hover img {
            transform: scale(1.03);
        }
        .about-visual .visual-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 24px;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
        }
        .about-visual .visual-overlay span {
            font-size: 0.85rem;
            font-weight: 600;
            color: #fff;
        }

        /* ============ CTA 横幅 ============ */
        .cta-banner {
            padding: 80px 0;
            background: linear-gradient(120deg, #FF6A00 0%, #FF8B26 50%, #F5B841 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -20px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: 10%;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }
        .cta-banner .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 24px;
        }
        .cta-banner .cta-text h2 {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 800;
            color: #111;
            margin-bottom: 8px;
        }
        .cta-banner .cta-text p {
            font-size: 0.95rem;
            color: rgba(17, 17, 17, 0.7);
            margin: 0;
        }
        .cta-banner .btn-cta {
            background: #111;
            color: #fff;
            padding: 14px 36px;
            border-radius: var(--radius-btn);
            font-size: 1rem;
            font-weight: 600;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
        }
        .cta-banner .btn-cta:hover {
            background: #1a1a1a;
            color: var(--brand);
            transform: translateY(-2px);
        }
        .cta-banner .btn-cta i {
            font-size: 0.8rem;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: #070709;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0 24px;
        }
        .footer-top {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand {
            max-width: 300px;
        }
        .footer-brand .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-brand .footer-logo i {
            color: var(--brand);
        }
        .footer-brand .footer-logo span {
            color: var(--brand);
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .footer-links-group {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul a {
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--brand);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom .copyright {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom .copyright a {
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom .copyright a:hover {
            color: var(--brand);
        }
        .footer-social {
            display: flex;
            gap: 8px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 0.85rem;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--brand);
            color: #111;
            border-color: var(--brand);
        }

        /* ============ 动画 ============ */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (prefers-reduced-motion: reduce) {
            .reveal {
                opacity: 1;
                transform: none;
                transition: none;
            }
            * {
                animation: none !important;
                transition: none !important;
            }
        }

        /* ============ 响应式 ============ */
        @media (max-width: 992px) {
            .navbar-toggler-custom {
                display: flex;
            }
            .nav-menu-center {
                display: none !important;
            }
            .header-cta .btn-download {
                display: none;
            }
            .mobile-menu {
                display: block;
                visibility: hidden;
                max-height: 0;
                padding: 0;
                overflow: hidden;
                transition: max-height 0.4s ease, padding 0.4s ease, visibility 0.4s;
            }
            .mobile-menu.show {
                visibility: visible;
                max-height: 500px;
                padding: 12px 24px 20px;
            }
            .hero-section {
                padding: 72px 0 64px;
            }
            .hero-report-wrap {
                padding-left: 0;
                margin-top: 32px;
            }
            .hero-report-card,
            .hero-form-wrap {
                margin-left: 0;
                max-width: 100%;
            }
            .metric-strip {
                padding: 24px;
            }
            .version-cards {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .version-card.featured {
                transform: scale(1);
            }
            .version-card.featured:hover {
                transform: translateY(-4px);
            }
            .scenario-row,
            .scenario-row:nth-child(even) {
                flex-direction: column;
                gap: 32px;
            }
            .scenario-img,
            .scenario-content {
                flex: 1 1 100%;
            }
            .about-grid {
                grid-template-columns: 1fr;
            }
            .footer-top {
                flex-direction: column;
                gap: 32px;
            }
            .section-block,
            .service-section,
            .scenario-section,
            .app-section,
            .faq-section,
            .about-section {
                padding: 64px 0;
            }
        }
        @media (max-width: 768px) {
            .notice-left {
                font-size: 0.72rem;
            }
            .notice-right .chip {
                padding: 3px 10px;
                font-size: 0.7rem;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stats .stat-num {
                font-size: 1.3rem;
            }
            .metric-strip {
                flex-wrap: wrap;
                gap: 16px;
            }
            .metric-item {
                flex: 1 1 45%;
            }
            .cta-banner .container {
                flex-direction: column;
                text-align: center;
            }
            .cta-banner .btn-cta {
                width: 100%;
                justify-content: center;
            }
            .footer-links-group {
                gap: 24px;
            }
        }
        @media (max-width: 576px) {
            .hero-actions {
                flex-direction: column;
                gap: 12px;
            }
            .hero-actions .btn-brand-primary,
            .hero-actions .btn-brand-outline {
                width: 100%;
                text-align: center;
            }
            .hero-form-wrap .form-row {
                flex-direction: column;
            }
            .hero-form-wrap .btn-submit {
                width: 100%;
                padding: 12px;
            }
            .scenario-img img {
                height: 220px;
            }
            .about-visual img {
                height: 260px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .metric-strip {
                padding: 16px;
            }
            .metric-item {
                flex: 1 1 100%;
            }
            .feature-card {
                padding: 24px 20px;
            }
        }

/* roulang page: category1 */
:root {
  --brand: #FF6A00;
  --brand-hover: #FF8B26;
  --brand-gold: #F5B841;
  --bg-dark: #0B0B0F;
  --bg-card: #15151D;
  --bg-card-hover: #1C1C27;
  --bg-light: #F7F5F0;
  --text-primary: #F7F5F0;
  --text-secondary: #9CA3AF;
  --text-light: #6B7280;
  --border-dark: rgba(255,255,255,0.08);
  --border-light: rgba(17,24,39,0.08);
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-image: 16px;
  --shadow-card: 0 2px 8px rgba(0,0,0,0.2);
  --shadow-hover: 0 12px 28px rgba(0,0,0,0.35);
  --transition: 0.25s ease;
}
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
*, *::before, *::after { box-sizing: border-box; }
img { max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; transition: color var(--transition), opacity var(--transition); }
a:hover, a:focus { color: var(--brand); }
a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(255,106,0,0.3);
  outline-offset: 2px;
  border-radius: 4px;
}
button { border: none; background: none; cursor: pointer; transition: transform 0.2s ease, background var(--transition), color var(--transition), box-shadow var(--transition), opacity var(--transition); }
button:active { transform: scale(0.97); }
.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }
@media (max-width: 576px) {
  .container { padding-left: 16px; padding-right: 16px; }
}

/* ===== Header 双层导航 ===== */
.site-header { position: relative; z-index: 1000; background: rgba(11,11,15,0.95); border-bottom: 1px solid rgba(255,255,255,0.04); }
.site-header .main-nav-wrap { height: 72px; display: flex; align-items: center; justify-content: space-between; }
.site-header .logo-area { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.4rem; color: var(--text-primary); letter-spacing: 0.5px; }
.site-header .logo-area i { color: var(--brand); font-size: 1.6rem; }
.site-header .logo-area span { color: var(--brand); }
.site-header .nav-menu-center { display: flex; align-items: center; gap: 4px; margin: 0 auto; padding: 0 24px; }
.site-header .nav-menu-center a { color: var(--text-secondary); font-size: 0.95rem; font-weight: 500; padding: 8px 16px; border-radius: 6px; position: relative; transition: color var(--transition), background var(--transition); }
.site-header .nav-menu-center a:hover, .site-header .nav-menu-center a.active { color: var(--brand); background: rgba(255,106,0,0.06); }
.site-header .nav-menu-center a.active::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 20px; height: 2px; background: var(--brand); border-radius: 2px; }
.header-cta { display: flex; align-items: center; gap: 12px; }
.header-cta .btn-download { background: var(--brand); color: #111; font-weight: 600; padding: 8px 22px; border-radius: var(--radius-btn); font-size: 0.9rem; box-shadow: 0 4px 16px rgba(255,106,0,0.25); border: none; }
.header-cta .btn-download:hover { background: var(--brand-hover); color: #111; box-shadow: 0 6px 20px rgba(255,138,38,0.35); transform: translateY(-1px); }
.navbar-toggler-custom { width: 44px; height: 44px; display: none; align-items: center; justify-content: center; color: var(--text-primary); font-size: 1.5rem; background: transparent; border: 1px solid var(--border-dark); border-radius: 8px; }
.navbar-toggler-custom:hover { color: var(--brand); border-color: var(--brand); }
.notice-bar { border-top: 1px solid rgba(255,255,255,0.04); background: #17171F; }
.notice-bar .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 40px; }
.notice-left { font-size: 0.78rem; color: var(--text-secondary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.notice-left i { color: var(--brand); margin-right: 6px; }
.notice-right { display: flex; gap: 8px; flex-shrink: 0; }
.notice-right .chip { display: inline-flex; align-items: center; gap: 5px; padding: 4px 14px; border-radius: 999px; border: 1px solid rgba(255,255,255,0.15); font-size: 0.78rem; color: var(--text-secondary); font-weight: 500; transition: all var(--transition); background: transparent; }
.notice-right .chip i { font-size: 0.6rem; }
.notice-right .chip:hover { background: var(--brand); color: #111; border-color: var(--brand); }
.site-header.fixed-nav { position: fixed; top: 0; left: 0; right: 0; background: rgba(11,11,15,0.88); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(255,255,255,0.08); animation: slideDown 0.3s ease; }
.site-header.fixed-nav .notice-bar { display: none; }
@keyframes slideDown { from { transform: translateY(-100%); } to { transform: translateY(0); } }
.mobile-menu { display: none; position: fixed; top: 72px; left: 0; right: 0; background: rgba(11,11,15,0.98); border-bottom: 1px solid rgba(255,255,255,0.08); padding: 16px 24px 24px; z-index: 999; }
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; padding: 12px 16px; color: var(--text-secondary); font-size: 1rem; border-radius: 8px; }
.mobile-menu a:hover, .mobile-menu a.active { color: var(--brand); background: rgba(255,106,0,0.06); }
.mobile-menu .btn-download { margin-top: 12px; width: 100%; background: var(--brand); color: #111; font-weight: 600; padding: 12px; border-radius: var(--radius-btn); text-align: center; }

/* ===== 面包屑 ===== */
.breadcrumb-wrap { padding: 16px 0; border-bottom: 1px solid var(--border-dark); }
.breadcrumb-wrap .breadcrumb { margin: 0; font-size: 0.85rem; --bs-breadcrumb-divider: '/'; }
.breadcrumb-wrap .breadcrumb a { color: var(--text-secondary); }
.breadcrumb-wrap .breadcrumb a:hover { color: var(--brand); }
.breadcrumb-wrap .breadcrumb-item.active { color: var(--text-primary); }

/* ===== 分类标题区 ===== */
.category-hero {
  position: relative;
  padding: 72px 0 96px;
  background: linear-gradient(180deg, rgba(11,11,15,0.6) 60%, transparent), var(--bg-dark);
  border-bottom: 1px solid var(--border-dark);
  overflow: hidden;
}
.category-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-position: center;
  background-size: cover;
  opacity: 0.12;
  z-index: 0;
  background-image: url('/assets/images/backpic/back-1.jpg');
}
.category-hero .hero-inner { position: relative; z-index: 1; }
.category-hero .hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,106,0,0.15);
  color: var(--brand);
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}
.category-hero h1 {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text-primary);
  letter-spacing: 0.5px;
}
.category-hero h1 .hl { color: var(--brand); }
.category-hero .hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 720px;
  line-height: 1.8;
}
@media (max-width: 768px) {
  .category-hero { padding: 48px 0 64px; }
  .category-hero h1 { font-size: 30px; }
  .category-hero .hero-desc { font-size: 0.95rem; }
}

/* ===== 筛选 chips ===== */
.filter-bar {
  padding: 28px 0 12px;
  background: transparent;
}
.filter-bar .filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.filter-bar .filter-chip {
  padding: 7px 20px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.15);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition);
}
.filter-bar .filter-chip:hover { color: var(--brand); border-color: var(--brand); }
.filter-bar .filter-chip.active { background: var(--brand); color: #111; border-color: var(--brand); font-weight: 600; }
@media (max-width: 576px) {
  .filter-bar .filter-chips { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 6px; -webkit-overflow-scrolling: touch; }
  .filter-bar .filter-chip { flex-shrink: 0; }
}

/* ===== 分类内容区 ===== */
.category-content { padding: 24px 0 96px; }

/* 横版大卡 */
.horizontal-card {
  display: flex;
  background: var(--bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  margin-bottom: 24px;
  min-height: 220px;
}
.horizontal-card:hover { transform: translateY(-4px); border-color: rgba(255,106,0,0.4); box-shadow: var(--shadow-hover); }
.horizontal-card .hc-img { flex: 0 0 42%; max-width: 42%; overflow: hidden; }
.horizontal-card .hc-img img { width: 100%; height: 100%; object-fit: cover; min-height: 220px; transition: transform 0.5s ease; }
.horizontal-card:hover .hc-img img { transform: scale(1.03); }
.horizontal-card .hc-body { padding: 28px; display: flex; flex-direction: column; justify-content: center; }
.horizontal-card .hc-body h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 10px; color: var(--text-primary); line-height: 1.4; }
.horizontal-card .hc-body p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; }
.hc-meta { display: flex; align-items: center; gap: 14px; font-size: 0.78rem; color: var(--text-light); }
.hc-meta i { margin-right: 4px; }
.hc-tags { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.hc-tags .tag-chip {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 999px;
  background: rgba(255,106,0,0.1);
  color: var(--brand);
  font-size: 0.75rem;
  font-weight: 500;
}

/* 纵向小卡 */
.small-card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.small-card {
  background: var(--bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.small-card:hover { transform: translateY(-4px); border-color: rgba(255,106,0,0.4); box-shadow: var(--shadow-hover); }
.small-card .sc-img { overflow: hidden; aspect-ratio: 4/3; }
.small-card .sc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.small-card:hover .sc-img img { transform: scale(1.03); }
.small-card .sc-body { padding: 20px; display: flex; flex-direction: column; flex-grow: 1; }
.small-card .sc-body h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; color: var(--text-primary); line-height: 1.45; }
.small-card .sc-body p { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.sc-footer { margin-top: auto; display: flex; align-items: center; justify-content: space-between; border-top: 1px solid var(--border-dark); padding-top: 12px; font-size: 0.76rem; color: var(--text-light); }
.sc-footer a { color: var(--brand); font-size: 0.78rem; }
.sc-footer a i { transition: transform 0.25s ease; }
.sc-footer a:hover i { transform: translateX(4px); }

/* 空状态 */
.empty-state { display: none; text-align: center; padding: 60px 20px; color: var(--text-secondary); }
.empty-state.show { display: block; }
.empty-state i { font-size: 3rem; color: rgba(255,255,255,0.15); margin-bottom: 16px; display: block; }
.empty-state .clear-filter { display: inline-block; margin-top: 12px; padding: 8px 24px; border: 1px solid var(--brand); color: var(--brand); border-radius: 999px; font-size: 0.85rem; }
.empty-state .clear-filter:hover { background: var(--brand); color: #111; }

/* 加载更多 */
.load-more-wrap { text-align: center; margin-top: 48px; }
.load-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 40px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--text-primary);
  font-weight: 500;
  transition: all var(--transition);
}
.load-more-btn:hover { border-color: var(--brand); color: var(--brand); box-shadow: 0 8px 20px rgba(255,106,0,0.15); }
.load-more-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ===== 侧栏 ===== */
.sidebar-wrap { position: sticky; top: 24px; }
.sb-card {
  background: var(--bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-card);
  padding: 24px;
  margin-bottom: 24px;
}
.sb-card h4 { font-size: 1rem; font-weight: 700; margin-bottom: 18px; position: relative; padding-bottom: 12px; color: var(--text-primary); }
.sb-card h4::after { content: ''; position: absolute; bottom: 0; left: 0; width: 28px; height: 3px; background: var(--brand); border-radius: 3px; }
.sb-recommend-list { list-style: none; padding: 0; margin: 0; }
.sb-recommend-list li { border-bottom: 1px solid var(--border-dark); padding: 12px 0; }
.sb-recommend-list li:last-child { border-bottom: none; }
.sb-recommend-list a { display: flex; align-items: flex-start; gap: 12px; font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; }
.sb-recommend-list a:hover { color: var(--brand); }
.sb-recommend-list .num { font-size: 1rem; font-weight: 700; color: rgba(255,106,0,0.6); flex-shrink: 0; width: 20px; }
.sb-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.sb-tags .sb-tag { padding: 5px 14px; border-radius: 999px; border: 1px solid rgba(255,255,255,0.12); font-size: 0.76rem; color: var(--text-secondary); transition: all var(--transition); }
.sb-tags .sb-tag:hover { background: var(--brand); color: #111; border-color: var(--brand); }

/* ===== CTA 横幅 ===== */
.cta-band {
  position: relative;
  padding: 72px 0;
  background: linear-gradient(135deg, #E85D00 0%, #FF6A00 45%, #F5B841 100%);
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -40px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.15);
}
.cta-band::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: 10%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.1);
}
.cta-band .cta-inner { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.cta-band h2 { color: #111; font-size: 2rem; font-weight: 800; margin-bottom: 8px; }
.cta-band p { color: rgba(17,17,17,0.75); font-size: 0.95rem; margin-bottom: 0; }
.cta-band .btn-white {
  background: #111;
  color: #fff;
  padding: 14px 36px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.cta-band .btn-white:hover { background: #000; color: var(--brand-gold); transform: translateY(-2px); }
@media (max-width: 768px) {
  .cta-band { padding: 48px 0; }
  .cta-band .cta-inner { flex-direction: column; text-align: center; }
  .cta-band h2 { font-size: 1.5rem; }
}

/* ===== Footer ===== */
.site-footer { background: #070709; border-top: 1px solid rgba(255,255,255,0.06); padding-top: 64px; }
.footer-top { display: grid; grid-template-columns: 1.5fr 2fr; gap: 48px; padding-bottom: 40px; }
.footer-brand .footer-logo { font-size: 1.5rem; font-weight: 700; color: var(--text-primary); margin-bottom: 12px; }
.footer-brand .footer-logo i { color: var(--brand); margin-right: 4px; }
.footer-brand .footer-logo span { color: var(--brand); }
.footer-brand p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.7; max-width: 360px; }
.footer-links-group { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer-col h4 { font-size: 0.9rem; font-weight: 600; margin-bottom: 16px; color: var(--text-primary); }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { font-size: 0.82rem; color: var(--text-secondary); }
.footer-col ul a:hover { color: var(--brand); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding: 20px 0; border-top: 1px solid rgba(255,255,255,0.06); }
.copyright { font-size: 0.76rem; color: var(--text-light); }
.copyright a { color: var(--text-secondary); }
.copyright a:hover { color: var(--brand); }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: all var(--transition);
}
.footer-social a:hover { background: var(--brand); color: #111; border-color: var(--brand); }
@media (max-width: 768px) {
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-links-group { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
}

/* ===== 响应式 ===== */
@media (max-width: 991.98px) {
  .sidebar-wrap { display: none; }
  .small-card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767.98px) {
  .navbar-toggler-custom { display: inline-flex; }
  .desktop-nav { display: none !important; }
  .header-cta .btn-download { display: none; }
  .notice-bar .notice-left { max-width: 140px; }
  .horizontal-card { flex-direction: column; }
  .horizontal-card .hc-img { flex: none; max-width: 100%; }
  .horizontal-card .hc-img img { min-height: 180px; aspect-ratio: 16/7; }
  .horizontal-card .hc-body { padding: 20px; }
  .small-card-grid { grid-template-columns: 1fr; gap: 16px; }
  .category-content { padding-bottom: 56px; }
}
@media (min-width: 992px) {
  .desktop-nav { display: flex !important; }
  .navbar-toggler-custom { display: none; }
}

/* ===== 动效 ===== */
.fade-up { opacity: 0; transform: translateY(24px); transition: opacity 0.5s ease, transform 0.5s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .fade-up { opacity: 1; transform: none; transition: none; }
}
a, button { -webkit-tap-highlight-color: transparent; }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}