/* roulang page: index */
:root {
            --primary: #10B981;
            --primary-hover: #059669;
            --secondary: #6366F1;
            --secondary-hover: #4F46E5;
            --bg-main: #0B0F19;
            --bg-alt: #111827;
            --surface: #1F2937;
            --surface-hover: #283548;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(16, 185, 129, 0.4);
            --text-main: #F9FAFB;
            --text-muted: #9CA3AF;
            --accent: #F59E0B;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
        }

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

        body {
            background-color: var(--bg-main);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

        /* 顶部双行导航 */
        .top-utility-bar {
            background-color: #060911;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.8125rem;
            color: var(--text-muted);
            padding: 6px 0;
        }
        .top-utility-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .status-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            background-color: var(--primary);
            border-radius: 50%;
            margin-right: 6px;
            box-shadow: 0 0 8px var(--primary);
        }

        .main-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 15, 25, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .brand-logo {
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .brand-logo span {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            gap: 28px;
            list-style: none;
            margin: 0;
        }
        .nav-links a {
            color: #D1D5DB;
            font-size: 0.9375rem;
            font-weight: 500;
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .header-actions {
            display: flex;
            gap: 12px;
            align-items: center;
        }

        /* 基础按钮 */
        .btn-brand-primary {
            background-color: var(--primary);
            color: #042f20;
            font-weight: 700;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .btn-brand-primary:hover {
            background-color: #34D399;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
            color: #042f20;
        }
        .btn-brand-ghost {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            color: #fff;
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.25s ease;
        }
        .btn-brand-ghost:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(16, 185, 129, 0.05);
        }

        /* Hero 区块 - 沉浸式暗底质感 */
        .hero-section {
            position: relative;
            padding: 90px 0 100px;
            background: linear-gradient(180deg, rgba(11, 15, 25, 0.82) 0%, #0B0F19 100%),
                        url('/assets/images/d6377727a02d79f9.webp') center center/cover no-repeat;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(16, 185, 129, 0.12);
            border: 1px solid rgba(16, 185, 129, 0.3);
            color: var(--primary);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
        }
        .hero-title {
            font-size: 2.85rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            color: #FFFFFF;
            letter-spacing: -0.5px;
        }
        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 620px;
            margin-bottom: 36px;
            line-height: 1.8;
        }
        .hero-media-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .hero-media-card img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        .hero-metrics-overlay {
            position: absolute;
            bottom: 16px;
            left: 16px;
            right: 16px;
            background: rgba(15, 23, 42, 0.85);
            backdrop-filter: blur(12px);
            padding: 14px 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            display: flex;
            justify-content: space-around;
        }
        .hero-metric-item {
            text-align: center;
        }
        .hero-metric-num {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
        }
        .hero-metric-label {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* Pill 胶囊分类导航条 */
        .subnav-pills-bar {
            position: sticky;
            top: 65px;
            z-index: 95;
            background: rgba(17, 24, 39, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }
        .pill-scroll-wrapper {
            display: flex;
            gap: 12px;
            overflow-x: auto;
            white-space: nowrap;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 4px;
        }
        .pill-scroll-wrapper::-webkit-scrollbar {
            height: 4px;
        }
        .pill-scroll-wrapper::-webkit-scrollbar-thumb {
            background: var(--surface-hover);
            border-radius: 4px;
        }
        .pill-link {
            padding: 7px 18px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            font-size: 0.85rem;
            color: #D1D5DB;
            font-weight: 500;
            display: inline-block;
        }
        .pill-link:hover, .pill-link.active {
            background: var(--primary);
            color: #042f20;
            border-color: var(--primary);
            font-weight: 600;
        }

        /* 板块通用规范 */
        .section-block {
            padding: 85px 0;
            border-bottom: 1px solid var(--border);
        }
        .section-block.bg-alt {
            background-color: var(--bg-alt);
        }
        .section-block.bg-cover {
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-tag {
            color: var(--primary);
            font-size: 0.875rem;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            display: block;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 2.15rem;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }
        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-muted);
            max-width: 650px;
            line-height: 1.7;
        }

        /* 卡片基础与进阶 */
        .tech-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            height: 100%;
            transition: all 0.25s ease-in-out;
            box-shadow: var(--shadow-card);
        }
        .tech-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
        }
        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: rgba(16, 185, 129, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.25rem;
            margin-bottom: 20px;
        }
        .tech-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .tech-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        /* 品类大卡片 */
        .category-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            transition: all 0.25s ease-in-out;
        }
        .category-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
        }
        .category-card-img {
            height: 200px;
            overflow: hidden;
        }
        .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-body {
            padding: 24px;
        }
        .cat-badge {
            background: rgba(99, 102, 241, 0.15);
            color: #818CF8;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 12px;
        }
        .cat-spec-list {
            list-style: none;
            margin: 16px 0 0;
            padding: 0;
            font-size: 0.85rem;
            color: var(--text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 14px;
        }
        .cat-spec-list li {
            display: flex;
            justify-content: space-between;
            margin-bottom: 8px;
        }
        .cat-spec-list span {
            color: #FFFFFF;
            font-weight: 600;
        }

        /* 流程与步骤 */
        .flow-step-box {
            position: relative;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 26px;
            height: 100%;
        }
        .step-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            opacity: 0.4;
            line-height: 1;
            margin-bottom: 12px;
        }

        /* 运营数据指标条 */
        .metric-stat-item {
            text-align: center;
            padding: 30px 15px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
        }
        .stat-huge-num {
            font-size: 2.85rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 8px;
            font-family: Consolas, Monaco, monospace;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 评价证言卡片 */
        .testimonial-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            height: 100%;
        }
        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 20px;
        }
        .user-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: #374151;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--primary);
        }
        .user-meta h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin: 0;
            color: #FFFFFF;
        }
        .user-meta p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* FAQ 手风琴 */
        .faq-accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
        }
        .faq-accordion-item summary {
            padding: 18px 24px;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #FFFFFF;
            transition: color 0.2s ease;
        }
        .faq-accordion-item summary:hover {
            color: var(--primary);
        }
        .faq-accordion-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-content {
            padding: 0 24px 20px;
            font-size: 0.925rem;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* 资质与徽章条 */
        .badge-grid-item {
            display: flex;
            align-items: center;
            gap: 12px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            padding: 16px 20px;
            border-radius: var(--radius-md);
        }
        .badge-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
        }

        /* 转化申请卡片 */
        .cta-box-card {
            background: linear-gradient(135deg, #1F2937 0%, #111827 100%);
            border: 1px solid var(--border-hover);
            border-radius: var(--radius-lg);
            padding: 48px;
            box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.7);
        }
        .form-input-field {
            background: rgba(11, 15, 25, 0.8);
            border: 1px solid var(--border);
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: 0.95rem;
            width: 100%;
            margin-bottom: 16px;
        }
        .form-input-field:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
        }

        /* 页脚规范 */
        .site-footer {
            background-color: #060911;
            padding: 70px 0 35px;
            border-top: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 0.875rem;
        }
        .footer-heading {
            color: #FFFFFF;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .footer-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-list li {
            margin-bottom: 10px;
        }
        .footer-list a:hover {
            color: var(--primary);
        }
        .copyright-bar {
            margin-top: 50px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
            font-size: 0.8125rem;
        }

        /* 底部浮动 CTA 条 */
        .floating-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(17, 24, 39, 0.95);
            backdrop-filter: blur(12px);
            border-top: 1px solid rgba(16, 185, 129, 0.3);
            padding: 12px 0;
            z-index: 999;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
        }
        .floating-cta-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        /* 移动端响应优化 */
        @media screen and (max-width: 1024px) {
            .nav-links { display: none; }
        }
        @media screen and (max-width: 768px) {
            .hero-title { font-size: 2.15rem; }
            .section-block { padding: 55px 0; }
            .stat-huge-num { font-size: 2.25rem; }
            .cta-box-card { padding: 24px; }
            .floating-cta-bar .hide-for-small { display: none; }
            .hero-media-card { margin-top: 30px; }
        }