/* roulang page: index */
:root {
            --primary: #FF5A1F;
            --primary-dark: #E64A0E;
            --secondary: #FFC53D;
            --accent: #B6F23A;
            --dark: #191919;
            --light: #FAF6F0;
            --text: #4A4A4A;
            --border: rgba(25, 25, 25, 0.08);
            --radius: 10px;
            --radius-sm: 6px;
            --shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.12);
            --section-gap: 80px;
            --section-inner: 48px;
            --font-main: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--light);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--dark);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-pad {
            padding: var(--section-gap) 0;
        }

        .section-head {
            margin-bottom: var(--section-inner);
            text-align: center;
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-head .tag {
            display: inline-block;
            background: var(--secondary);
            color: var(--dark);
            font-size: 13px;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 30px;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            box-shadow: 0 4px 20px rgba(255, 90, 31, 0.3);
            position: relative;
            z-index: 100;
        }

        .navbar {
            padding: 14px 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 22px;
            color: #fff;
            letter-spacing: 0.5px;
        }

        .navbar-brand:hover {
            color: var(--secondary);
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            background: var(--secondary);
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            font-weight: 900;
            color: var(--dark);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }

        .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.9);
            font-weight: 600;
            font-size: 15px;
            padding: 8px 16px !important;
            border-radius: 6px;
            margin: 0 2px;
            transition: background 0.2s, color 0.2s;
        }

        .navbar-nav .nav-link:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }

        .navbar-nav .nav-link.active {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
        }

        .nav-cta {
            background: var(--secondary) !important;
            color: var(--dark) !important;
            font-weight: 700;
            border-radius: 8px;
            padding: 8px 22px !important;
            border: none;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            background: #ffd45e !important;
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.5);
            padding: 4px 8px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
        }

        .navbar-toggler-icon {
            filter: invert(1) brightness(2);
        }

        /* ===== Hero ===== */
        .hero {
            background: url('/assets/images/backpic/back-1.jpg') center center / cover no-repeat;
            position: relative;
            padding: 100px 0 120px;
            color: #fff;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(25, 25, 25, 0.9) 0%, rgba(25, 25, 25, 0.6) 50%, rgba(255, 90, 31, 0.35) 100%);
        }

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

        .hero-badge {
            display: inline-block;
            background: var(--secondary);
            color: var(--dark);
            font-size: 13px;
            font-weight: 800;
            padding: 5px 18px;
            border-radius: 30px;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }

        .hero h1 {
            font-size: 44px;
            font-weight: 900;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
        }

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

        .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 520px;
            line-height: 1.75;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .btn-primary {
            background: var(--primary);
            border: none;
            border-radius: 8px;
            font-weight: 700;
            padding: 12px 30px;
            color: #fff;
            transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 90, 31, 0.4);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-primary:focus {
            outline: 3px solid rgba(255, 90, 31, 0.5);
            box-shadow: 0 0 0 0.25rem rgba(255, 90, 31, 0.3);
        }

        .btn-outline-light {
            border: 2px solid rgba(255, 255, 255, 0.8);
            border-radius: 8px;
            font-weight: 600;
            padding: 10px 24px;
            color: #fff;
            transition: background 0.2s, border-color 0.2s;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
        }

        .hero-progress-wrap {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 16px;
            padding: 30px;
            backdrop-filter: blur(6px);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
        }

        .progress-ring {
            width: 170px;
            height: 170px;
            border-radius: 50%;
            background: conic-gradient(var(--secondary) 0% 85%, rgba(255, 255, 255, 0.15) 85% 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .progress-ring::before {
            content: '';
            position: absolute;
            width: 130px;
            height: 130px;
            border-radius: 50%;
            background: var(--dark);
        }

        .progress-text {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .progress-number {
            display: block;
            font-size: 38px;
            font-weight: 900;
            color: var(--secondary);
            line-height: 1.1;
        }

        .progress-label {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 4px;
        }

        .hero-stats {
            display: flex;
            gap: 30px;
        }

        .hero-stats .stat {
            text-align: center;
        }

        .hero-stats .stat-num {
            display: block;
            font-size: 24px;
            font-weight: 900;
            color: var(--accent);
        }

        .hero-stats .stat-label {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.7);
        }

        .hero-tiers {
            margin-top: 50px;
            gap: 0;
        }

        .tier-card {
            background: rgba(255, 255, 255, 0.95);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
            position: relative;
            height: 100%;
            border: 2px solid transparent;
            transition: transform 0.2s, box-shadow 0.2s;
        }

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

        .tier-card.recommended {
            border-color: var(--primary);
            box-shadow: 0 8px 30px rgba(255, 90, 31, 0.25);
        }

        .tier-tag {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--secondary);
            color: var(--dark);
            font-size: 12px;
            font-weight: 800;
            padding: 3px 14px;
            border-radius: 20px;
        }

        .tier-name {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            display: block;
            margin-bottom: 4px;
        }

        .tier-price {
            display: block;
            font-size: 30px;
            font-weight: 900;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .tier-price small {
            font-size: 14px;
            font-weight: 400;
        }

        .tier-desc {
            font-size: 13px;
            color: var(--text);
            display: block;
            margin-bottom: 14px;
        }

        /* ===== 功能区 / 分类卡片 ===== */
        .category-section {
            background: var(--light);
            padding: var(--section-gap) 0;
        }

        .cat-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 0;
            overflow: hidden;
            height: 100%;
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
        }

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

        .cat-card img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            display: block;
        }

        .cat-card-body {
            padding: 24px;
        }

        .cat-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .cat-card-body p {
            font-size: 14px;
            color: var(--text);
            margin-bottom: 14px;
        }

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

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

        /* ===== 资讯区 ===== */
        .news-section {
            background: #fff;
            padding: var(--section-gap) 0;
        }

        .news-list {
            background: var(--light);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 10px 0;
        }

        .news-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 24px;
            border-bottom: 1px solid var(--border);
            transition: background 0.2s;
        }

        .news-item:last-child {
            border-bottom: none;
        }

        .news-item:hover {
            background: rgba(255, 90, 31, 0.04);
        }

        .news-date {
            font-size: 13px;
            color: #999;
            white-space: nowrap;
            margin-left: 14px;
        }

        .news-item a {
            font-weight: 600;
            font-size: 15px;
            color: var(--dark);
        }

        .news-item a:hover {
            color: var(--primary);
        }

        .news-tag {
            display: inline-block;
            background: var(--secondary);
            color: var(--dark);
            font-size: 11px;
            font-weight: 700;
            padding: 2px 10px;
            border-radius: 14px;
            margin-right: 8px;
        }

        .sidebar-panel {
            background: var(--light);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 24px;
            margin-bottom: 20px;
        }

        .sidebar-panel h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-badge {
            display: inline-block;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            transition: all 0.2s;
        }

        .tag-badge:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        .hot-ranking {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .hot-ranking li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hot-ranking li:last-child {
            border-bottom: none;
        }

        .rank-num {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: #f0f0f0;
            color: var(--text);
            font-size: 12px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .rank-num.top {
            background: var(--primary);
            color: #fff;
        }

        .hot-ranking a {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .hot-ranking a:hover {
            color: var(--primary);
        }

        /* ===== 使用场景 ===== */
        .scenario-section {
            background: var(--light);
            padding: var(--section-gap) 0;
        }

        .scenario-row {
            display: flex;
            align-items: center;
            margin-bottom: 60px;
        }

        .scenario-row.reverse {
            flex-direction: row-reverse;
        }

        .scenario-row:last-child {
            margin-bottom: 0;
        }

        .scenario-img {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .scenario-img img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            display: block;
        }

        .scenario-content {
            padding: 30px;
        }

        .scenario-content .step-num {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 800;
            padding: 3px 12px;
            border-radius: 4px;
            margin-bottom: 12px;
        }

        .scenario-content h3 {
            font-size: 22px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .scenario-content p {
            font-size: 15px;
            color: var(--text);
            margin-bottom: 16px;
        }

        .scenario-content .btn-outline-dark {
            border: 2px solid var(--dark);
            border-radius: 8px;
            font-weight: 600;
            padding: 8px 20px;
            background: transparent;
            transition: all 0.2s;
        }

        .scenario-content .btn-outline-dark:hover {
            background: var(--dark);
            color: #fff;
        }

        /* ===== 成功案例 / 数据 ===== */
        .success-section {
            background: var(--dark);
            padding: var(--section-gap) 0;
            color: #fff;
        }

        .success-section .section-head h2 {
            color: #fff;
        }

        .success-section .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }

        .data-ticket {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 14px;
            padding: 28px 20px;
            text-align: center;
            height: 100%;
            transition: transform 0.3s, background 0.3s;
        }

        .data-ticket:hover {
            transform: translateY(-4px);
            background: rgba(255, 255, 255, 0.1);
        }

        .data-number {
            display: block;
            font-size: 36px;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.1;
            margin-bottom: 8px;
        }

        .data-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            display: block;
        }

        .success-tags {
            margin-top: 40px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .success-tags .tag-badge {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.3);
            color: rgba(255, 255, 255, 0.8);
        }

        /* ===== App/下载 板块 ===== */
        .app-section {
            background: #fff;
            padding: var(--section-gap) 0;
        }

        .app-features {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            justify-content: center;
            margin-top: 32px;
        }

        .app-feature-item {
            text-align: center;
            max-width: 160px;
        }

        .app-feature-item .icon-circle {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background: var(--light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--primary);
            margin: 0 auto 12px;
            border: 1px solid var(--border);
        }

        .app-feature-item span {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            display: block;
        }

        /* ===== 价格 ===== */
        .pricing-section {
            background: var(--light);
            padding: var(--section-gap) 0;
        }

        .price-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 32px 28px;
            position: relative;
            text-align: center;
            height: 100%;
            transition: transform 0.3s, box-shadow 0.3s;
        }

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

        .price-card.featured {
            border: 2px solid var(--primary);
            box-shadow: 0 8px 30px rgba(255, 90, 31, 0.15);
        }

        .price-tag {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--secondary);
            color: var(--dark);
            font-size: 13px;
            font-weight: 800;
            padding: 4px 18px;
            border-radius: 20px;
            white-space: nowrap;
        }

        .price-card h3 {
            font-size: 20px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .price-num {
            font-size: 44px;
            font-weight: 900;
            color: var(--dark);
            line-height: 1.1;
            margin: 12px 0;
        }

        .price-num small {
            font-size: 18px;
            font-weight: 400;
        }

        .price-desc {
            font-size: 14px;
            color: var(--text);
            margin-bottom: 20px;
        }

        .price-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
            text-align: left;
        }

        .price-list li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .price-list li:last-child {
            border-bottom: none;
        }

        .price-list li i {
            color: var(--accent);
            font-size: 14px;
        }

        .price-list li.disabled {
            color: #bbb;
        }

        .price-list li.disabled i {
            color: #ddd;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
            padding: var(--section-gap) 0;
        }

        .accordion-item {
            border: 1px solid var(--border) !important;
            border-radius: var(--radius) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .accordion-button {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            background: var(--light);
            padding: 18px 20px;
            border: none;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(255, 90, 31, 0.04);
            color: var(--primary);
            box-shadow: inset 0 -1px 0 var(--border);
            border-left: 3px solid var(--primary);
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(255, 90, 31, 0.2);
            z-index: 1;
        }

        .accordion-body {
            padding: 20px;
            font-size: 15px;
            color: var(--text);
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .cta-band {
            background: linear-gradient(120deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 60px 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-band::after {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
        }

        .cta-band h2 {
            font-size: 30px;
            font-weight: 900;
            color: #fff;
            margin-bottom: 10px;
        }

        .cta-band p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
        }

        .cta-band .btn-cta {
            background: var(--secondary);
            color: var(--dark);
            font-weight: 800;
            font-size: 16px;
            border-radius: 10px;
            padding: 14px 36px;
            border: none;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .cta-band .btn-cta:hover {
            transform: scale(1.03);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 900;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 20px;
        }

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

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: color 0.2s;
        }

        .footer-links a:hover {
            color: var(--secondary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            margin-top: 40px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            text-align: center;
        }

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

        .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .navbar-collapse {
                background: rgba(0, 0, 0, 0.25);
                border-radius: 10px;
                padding: 14px;
                margin-top: 10px;
            }

            .navbar-nav .nav-link.active {
                background: rgba(255, 255, 255, 0.2);
                color: #fff;
            }

            .hero {
                padding: 70px 0 90px;
            }

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

            .hero-progress-wrap {
                margin-top: 30px;
            }

            .scenario-row,
            .scenario-row.reverse {
                flex-direction: column;
            }

            .scenario-content {
                padding: 20px 0;
                text-align: center;
            }

            .scenario-content .btn-outline-dark {
                margin-bottom: 16px;
            }

            .scenario-img img {
                height: 200px;
            }

            .section-pad {
                --section-gap: 56px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --section-gap: 50px;
                --section-inner: 32px;
            }

            .hero h1 {
                font-size: 28px;
            }

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

            .hero-actions .btn {
                width: 100%;
                margin-bottom: 8px;
            }

            .progress-ring {
                width: 140px;
                height: 140px;
            }

            .progress-ring::before {
                width: 105px;
                height: 105px;
            }

            .progress-number {
                font-size: 28px;
            }

            .hero-stats {
                gap: 16px;
            }

            .hero-tiers .col-md-4 {
                margin-bottom: 16px;
            }

            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }

            .news-date {
                margin-left: 0;
                font-size: 12px;
            }

            .data-number {
                font-size: 28px;
            }

            .price-card {
                margin-bottom: 20px;
            }

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

        @media (max-width: 520px) {
            .section-head h2 {
                font-size: 24px;
            }

            .hero h1 {
                font-size: 24px;
            }

            .hero-badge {
                font-size: 12px;
            }

            .hero-tiers .tier-card {
                padding: 18px;
            }

            .tier-price {
                font-size: 24px;
            }

            .cat-card img {
                height: 140px;
            }

            .scenario-content h3 {
                font-size: 18px;
            }

            .data-ticket {
                padding: 20px 12px;
            }

            .data-number {
                font-size: 24px;
            }
        }

        /* 通用 focus 可访问性 */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(255, 90, 31, 0.5);
            outline-offset: 2px;
        }

/* roulang page: category1 */
:root {
            --primary: #FF5A1F;
            --primary-dark: #E64A0E;
            --secondary: #FFC53D;
            --accent: #B6F23A;
            --dark: #191919;
            --light: #FAF6F0;
            --text: #4A4A4A;
            --border: rgba(25, 25, 25, 0.08);
            --radius: 10px;
            --radius-sm: 6px;
            --shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.12);
            --section-gap: 80px;
            --section-inner: 48px;
            --font-main: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

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

        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--light);
            -webkit-font-smoothing: antialiased;
            margin: 0;
        }

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

        a {
            color: var(--dark);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-pad {
            padding: var(--section-gap) 0;
        }

        .section-head {
            margin-bottom: var(--section-inner);
            text-align: center;
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-head .tag {
            display: inline-block;
            background: var(--secondary);
            color: var(--dark);
            font-size: 13px;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 30px;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 15px;
            color: var(--text);
            line-height: 1.7;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            box-shadow: 0 4px 20px rgba(255, 90, 31, 0.3);
            position: relative;
            z-index: 100;
        }

        .navbar {
            padding: 14px 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 22px;
            color: #fff;
            letter-spacing: 0.5px;
        }

        .navbar-brand:hover {
            color: var(--secondary);
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            background: var(--secondary);
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            font-weight: 900;
            color: var(--dark);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }

        .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.9);
            font-weight: 600;
            font-size: 15px;
            padding: 8px 16px !important;
            border-radius: 6px;
            margin: 0 2px;
            transition: background 0.2s, color 0.2s;
        }

        .navbar-nav .nav-link:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }

        .navbar-nav .nav-link.active {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
        }

        .nav-cta {
            background: var(--secondary) !important;
            color: var(--dark) !important;
            font-weight: 700;
            border-radius: 8px;
            padding: 8px 22px !important;
            border: none;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            background: #ffd45e !important;
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.5);
            padding: 4px 8px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
        }

        .navbar-toggler-icon {
            filter: invert(1) brightness(2);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            background: var(--light);
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb-wrap .breadcrumb {
            margin: 0;
            font-size: 14px;
        }

        .breadcrumb-wrap .breadcrumb a {
            color: var(--text);
            transition: color 0.2s;
        }

        .breadcrumb-wrap .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb-wrap .breadcrumb-item.active {
            color: var(--primary);
            font-weight: 600;
        }

        .breadcrumb-wrap .breadcrumb-item+.breadcrumb-item::before {
            color: #999;
            content: "›";
        }

        /* ===== Category Hero ===== */
        .category-hero {
            background: linear-gradient(135deg, rgba(25, 25, 25, 0.92) 0%, rgba(255, 90, 31, 0.55) 100%), url('/assets/images/backpic/back-2.jpg') center center / cover no-repeat;
            padding: 72px 0 56px;
            color: #fff;
            position: relative;
        }

        .category-hero .hero-badge {
            display: inline-block;
            background: var(--secondary);
            color: var(--dark);
            font-size: 13px;
            font-weight: 800;
            padding: 5px 18px;
            border-radius: 30px;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }

        .category-hero h1 {
            font-size: 42px;
            font-weight: 900;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 14px;
        }

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

        .category-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.9);
            max-width: 600px;
            line-height: 1.75;
            margin-bottom: 20px;
        }

        .category-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            margin-bottom: 24px;
        }

        .category-stats .stat-item {
            background: rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-sm);
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            backdrop-filter: blur(4px);
        }

        .category-stats .stat-item strong {
            color: var(--accent);
            font-size: 20px;
            font-weight: 900;
            margin-right: 4px;
        }

        .category-search {
            display: flex;
            gap: 10px;
            max-width: 480px;
        }

        .category-search .form-control {
            border-radius: 8px;
            border: none;
            padding: 12px 18px;
            font-size: 15px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
        }

        .category-search .form-control:focus {
            box-shadow: 0 0 0 3px rgba(255, 197, 61, 0.4);
            border-color: transparent;
        }

        .category-search .btn-search {
            background: var(--secondary);
            color: var(--dark);
            border: none;
            border-radius: 8px;
            font-weight: 700;
            padding: 12px 24px;
            white-space: nowrap;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .category-search .btn-search:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
        }

        .category-hero-img-wrap {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            transform: rotate(2deg);
            transition: transform 0.3s ease;
        }

        .category-hero-img-wrap:hover {
            transform: rotate(0deg) scale(1.02);
        }

        .category-hero-img-wrap img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            border-radius: var(--radius);
            display: block;
        }

        .category-hero-img-wrap::after {
            content: "白嫖之家 · 视频库";
            position: absolute;
            bottom: 14px;
            left: 14px;
            background: rgba(25, 25, 25, 0.75);
            color: var(--secondary);
            font-size: 13px;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 30px;
            letter-spacing: 0.5px;
        }

        /* ===== Filter Bar ===== */
        .filter-section {
            background: #fff;
            padding: 24px 0;
            border-bottom: 1px solid var(--border);
        }

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

        .filter-pills {
            display: flex;
            flex-wrap: nowrap;
            overflow-x: auto;
            gap: 8px;
            padding-bottom: 4px;
            scrollbar-width: thin;
        }

        .filter-pills::-webkit-scrollbar {
            height: 4px;
        }

        .filter-pills::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }

        .filter-pills .pill {
            background: var(--light);
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 7px 20px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .filter-pills .pill:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .filter-pills .pill.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(255, 90, 31, 0.3);
        }

        .filter-sort .dropdown-toggle {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all 0.2s;
        }

        .filter-sort .dropdown-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .filter-sort .dropdown-toggle::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 11px;
            border: none;
            vertical-align: middle;
        }

        .filter-sort .dropdown-menu {
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            padding: 8px;
            min-width: 140px;
        }

        .filter-sort .dropdown-item {
            font-size: 14px;
            padding: 8px 14px;
            border-radius: 6px;
            color: var(--text);
            transition: background 0.2s, color 0.2s;
        }

        .filter-sort .dropdown-item:hover,
        .filter-sort .dropdown-item.active {
            background: var(--light);
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== Category Grid / Cards ===== */
        .category-grid-section {
            padding: var(--section-gap) 0;
            background: var(--light);
        }

        .category-grid-section .section-head {
            text-align: left;
            margin-left: 0;
            margin-right: 0;
        }

        .category-grid-section .section-head h2 {
            font-size: 30px;
        }

        .category-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .category-card-img {
            position: relative;
            overflow: hidden;
            height: 190px;
        }

        .category-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .category-card-img .category-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 3px 14px;
            border-radius: 30px;
            letter-spacing: 0.5px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
        }

        .category-card-body {
            padding: 20px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .category-card-title {
            font-size: 18px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 8px;
            line-height: 1.4;
            transition: color 0.2s;
        }

        .category-card:hover .category-card-title {
            color: var(--primary);
        }

        .category-card-desc {
            font-size: 14px;
            color: var(--text);
            line-height: 1.65;
            margin-bottom: 14px;
            flex: 1;
        }

        .category-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: #999;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        .category-card-meta .update-time {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .category-card-meta .update-time::before {
            content: '';
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
            box-shadow: 0 0 6px rgba(182, 242, 58, 0.6);
        }

        .category-card-arrow {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--light);
            color: var(--dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: all 0.2s;
        }

        .category-card-arrow:hover {
            background: var(--primary);
            color: #fff;
            transform: rotate(-45deg);
        }

        .card-shift-down {
            margin-top: 48px;
        }

        /* ===== Pagination ===== */
        .pagination-wrap {
            padding: 40px 0 80px;
            background: var(--light);
            text-align: center;
        }

        .pagination {
            justify-content: center;
            gap: 6px;
        }

        .pagination .page-link {
            border: 1px solid var(--border);
            border-radius: 30px !important;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            background: #fff;
            margin: 0;
            transition: all 0.2s;
            line-height: 1.5;
        }

        .pagination .page-link:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--light);
        }

        .pagination .page-item.active .page-link {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(255, 90, 31, 0.3);
        }

        .pagination .page-item.disabled .page-link {
            color: #aaa;
            background: #fff;
            border-color: var(--border);
        }

        .pagination .page-item .page-link:focus {
            box-shadow: 0 0 0 3px rgba(255, 90, 31, 0.25);
        }

        /* ===== CTA Band ===== */
        .cta-band {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 56px 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: rgba(255, 197, 61, 0.15);
            border-radius: 50%;
        }

        .cta-band::after {
            content: "";
            position: absolute;
            bottom: -60%;
            left: -15%;
            width: 300px;
            height: 300px;
            background: rgba(182, 242, 58, 0.12);
            border-radius: 50%;
        }

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

        .cta-band h2 {
            font-size: 30px;
            font-weight: 900;
            margin-bottom: 10px;
        }

        .cta-band p {
            font-size: 16px;
            opacity: 0.9;
            margin-bottom: 24px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-cta-solid {
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: 8px;
            font-weight: 700;
            font-size: 16px;
            padding: 12px 32px;
            transition: transform 0.2s, box-shadow 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-cta-solid:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
            color: var(--primary);
        }

        .btn-cta-solid:active {
            transform: translateY(-1px);
        }

        .btn-cta-solid:focus {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--section-gap) 0;
            background: #fff;
        }

        .faq-section .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius) !important;
            margin-bottom: 14px;
            overflow: hidden;
            background: #fff;
        }

        .faq-section .accordion-button {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            padding: 18px 24px;
            background: var(--light);
            border: none;
            box-shadow: none;
            transition: background 0.2s, color 0.2s;
            position: relative;
        }

        .faq-section .accordion-button::before {
            content: '';
            position: absolute;
            left: 0;
            top: 12px;
            bottom: 12px;
            width: 4px;
            background: var(--primary);
            border-radius: 0 4px 4px 0;
            opacity: 0;
            transition: opacity 0.2s;
        }

        .faq-section .accordion-button:not(.collapsed)::before {
            opacity: 1;
        }

        .faq-section .accordion-button:not(.collapsed) {
            background: #fff;
            color: var(--primary);
        }

        .faq-section .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(255, 90, 31, 0.2);
        }

        .faq-section .accordion-button::after {
            background-image: none;
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 14px;
            color: var(--dark);
            width: auto;
            height: auto;
            transition: transform 0.3s ease;
        }

        .faq-section .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-section .accordion-body {
            padding: 18px 24px;
            font-size: 14px;
            color: var(--text);
            line-height: 1.75;
            border-top: 1px solid var(--border);
            background: #fff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 72px 0 0;
            font-size: 14px;
        }

        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 900;
            color: #fff;
            margin-bottom: 16px;
        }

        .site-footer .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 20px;
            max-width: 360px;
        }

        .site-footer .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 8px;
        }

        .site-footer .footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 3px;
            background: var(--secondary);
            border-radius: 3px;
        }

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

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

        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color 0.2s, padding-left 0.2s;
        }

        .site-footer .footer-links a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 48px;
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
        }

        .site-footer .footer-bottom p {
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1200px) {
            .category-hero h1 {
                font-size: 36px;
            }
            .category-card-img {
                height: 170px;
            }
        }

        @media (max-width: 992px) {
            :root {
                --section-gap: 56px;
                --section-inner: 32px;
            }
            .category-hero {
                padding: 56px 0 48px;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .category-hero-img-wrap {
                margin-top: 24px;
                max-width: 480px;
            }
            .category-hero-img-wrap img {
                height: 260px;
            }
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
            }
            .filter-sort .dropdown-toggle {
                width: 100%;
                justify-content: space-between;
            }
            .card-shift-down {
                margin-top: 0;
            }
            .category-grid .col-md-6 + .col-md-6 {
                margin-top: 0;
            }
            .category-grid .col-md-6:nth-child(even) {
                margin-top: 0;
            }
            .pagination-wrap {
                padding: 32px 0 56px;
            }
            .site-footer {
                padding-top: 48px;
            }
        }

        @media (max-width: 768px) {
            .category-hero h1 {
                font-size: 28px;
            }
            .category-desc {
                font-size: 15px;
            }
            .category-stats {
                gap: 10px;
            }
            .category-stats .stat-item {
                padding: 6px 14px;
                font-size: 13px;
            }
            .category-stats .stat-item strong {
                font-size: 17px;
            }
            .category-search {
                flex-wrap: wrap;
            }
            .category-search .btn-search {
                width: 100%;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .category-grid-section .section-head h2 {
                font-size: 24px;
            }
            .cta-band h2 {
                font-size: 24px;
            }
            .category-card-img {
                height: 160px;
            }
        }

        @media (max-width: 576px) {
            .category-hero {
                padding: 44px 0 40px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .hero-badge {
                font-size: 12px;
                padding: 4px 14px;
            }
            .category-hero-img-wrap img {
                height: 200px;
            }
            .category-card-img {
                height: 140px;
            }
            .category-card-title {
                font-size: 16px;
            }
            .category-card-desc {
                font-size: 13px;
            }
            .navbar-brand {
                font-size: 18px;
            }
            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .section-head h2 {
                font-size: 22px;
            }
            .cta-band {
                padding: 40px 0;
            }
            .btn-cta-solid {
                padding: 10px 24px;
                font-size: 14px;
            }
        }

/* 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}