/* roulang page: index */
:root {
            --bg-canvas: #0B0F19;
            --bg-card: rgba(17, 24, 39, 0.75);
            --bg-card-hover: rgba(26, 36, 56, 0.85);
            --bg-alt: #111827;
            --primary: #0066FF;
            --primary-glow: #00F2FE;
            --accent-green: #10B981;
            --accent-amber: #F59E0B;
            --text-main: #F9FAFB;
            --text-sub: #D1D5DB;
            --text-muted: #9CA3AF;
            --border-glass: rgba(255, 255, 255, 0.09);
            --border-glow: rgba(0, 242, 254, 0.35);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --container-w: 1240px;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

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

        html {
            scroll-behavior: smooth;
            background-color: var(--bg-canvas);
            color: var(--text-main);
            font-family: var(--font-stack);
            line-height: 1.6;
        }

        body {
            background-color: var(--bg-canvas);
            overflow-x: hidden;
            background-image: 
                radial-gradient(circle at 15% 20%, rgba(0, 102, 255, 0.12) 0%, transparent 40%),
                radial-gradient(circle at 85% 80%, rgba(0, 242, 254, 0.08) 0%, transparent 40%);
            background-attachment: fixed;
        }

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

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

        .container {
            width: 100%;
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 15, 25, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
        }

        .header-topbar {
            background: rgba(0, 102, 255, 0.15);
            border-bottom: 1px solid rgba(0, 242, 254, 0.1);
            font-size: 13px;
            color: var(--text-sub);
            padding: 6px 0;
        }

        .header-topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .topbar-status {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            background: var(--accent-green);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--accent-green);
        }

        .header-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: var(--text-main);
        }

        .brand-logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-glow));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            color: #000;
            font-size: 20px;
            box-shadow: 0 0 15px rgba(0, 242, 254, 0.5);
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 28px;
            align-items: center;
        }

        .nav-item a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            padding: 8px 4px;
            position: relative;
        }

        .nav-item a:hover, .nav-item a.active {
            color: var(--primary-glow);
        }

        .nav-item a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--primary-glow));
            transition: var(--transition);
        }

        .nav-item a:hover::after, .nav-item a.active::after {
            width: 100%;
        }

        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), #004ecc);
            color: #fff;
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(0, 242, 254, 0.4);
            box-shadow: 0 0 16px rgba(0, 102, 255, 0.4);
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-glow:hover {
            box-shadow: 0 0 24px rgba(0, 242, 254, 0.7);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-main);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.25);
            color: #fff;
        }

        /* 移动端菜单控制 */
        .mobile-menu-toggle {
            display: none;
            background: transparent;
            border: none;
            cursor: pointer;
            width: 32px;
            height: 24px;
            position: relative;
        }

        .mobile-menu-toggle span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--text-main);
            position: absolute;
            transition: var(--transition);
        }

        .mobile-menu-toggle span:nth-child(1) { top: 0; }
        .mobile-menu-toggle span:nth-child(2) { top: 11px; }
        .mobile-menu-toggle span:nth-child(3) { top: 22px; }

        /* 基础 Section 布局 */
        .section-block {
            padding: 90px 0;
            position: relative;
        }

        .section-block.alt-bg {
            background-color: var(--bg-alt);
            border-top: 1px solid var(--border-glass);
            border-bottom: 1px solid var(--border-glass);
        }

        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 56px auto;
        }

        .section-badge {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(0, 102, 255, 0.15);
            border: 1px solid rgba(0, 242, 254, 0.3);
            border-radius: 20px;
            color: var(--primary-glow);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* 玻璃拟态卡片 */
        .glass-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 28px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .glass-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-glow);
            background: var(--bg-card-hover);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
        }

        /* Section 1: Hero 沉浸暗底 */
        .hero-section {
            position: relative;
            min-height: 86vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/64c5df1c59922df6.png') center/cover no-repeat;
            padding: 100px 0 60px;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 15, 25, 0.75) 0%, rgba(11, 15, 25, 0.95) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 40px;
            align-items: center;
        }

        .hero-title {
            font-size: 46px;
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #FFFFFF 30%, var(--primary-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            margin-bottom: 40px;
        }

        .hero-stat-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            border-top: 1px solid var(--border-glass);
            padding-top: 24px;
        }

        .stat-item-val {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary-glow);
        }

        .stat-item-lbl {
            font-size: 13px;
            color: var(--text-muted);
        }

        .hero-poster-box {
            position: relative;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-glow);
            overflow: hidden;
            box-shadow: 0 0 35px rgba(0, 102, 255, 0.3);
        }

        .hero-poster-box img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .hero-badge-tag {
            position: absolute;
            top: 16px;
            right: 16px;
            background: rgba(16, 185, 129, 0.85);
            backdrop-filter: blur(8px);
            color: #fff;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 700;
        }

        /* Section 2: 合集目录与中台架构 */
        .catalog-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .catalog-card {
            border-left: 3px solid var(--primary);
        }

        .catalog-num {
            font-size: 12px;
            color: var(--primary-glow);
            font-weight: 800;
            margin-bottom: 8px;
            text-transform: uppercase;
        }

        .catalog-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .catalog-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        /* Section 3: 服务与能力矩阵 */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .matrix-card .icon-box {
            width: 48px;
            height: 48px;
            background: rgba(0, 102, 255, 0.12);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary-glow);
            margin-bottom: 18px;
        }

        .matrix-card h3 {
            font-size: 19px;
            margin-bottom: 10px;
        }

        .matrix-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .matrix-tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .matrix-tag {
            font-size: 12px;
            padding: 3px 8px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 4px;
            color: var(--text-muted);
        }

        /* Section 4: 软硬件产品体系 (对比列) */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .product-card {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .product-card.featured {
            border-color: var(--primary-glow);
            box-shadow: 0 0 25px rgba(0, 102, 255, 0.25);
        }

        .product-header {
            border-bottom: 1px solid var(--border-glass);
            padding-bottom: 18px;
            margin-bottom: 18px;
        }

        .product-header h3 {
            font-size: 20px;
            margin-bottom: 6px;
        }

        .product-desc {
            font-size: 14px;
            color: var(--text-sub);
        }

        .product-features {
            list-style: none;
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .product-features li {
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .product-features li::before {
            content: '✓';
            color: var(--accent-green);
            font-weight: 900;
        }

        /* Section 5: 核心算法与引擎架构 */
        .tech-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .tech-info h3 {
            font-size: 26px;
            margin-bottom: 16px;
        }

        .tech-info p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .tech-spec-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
            margin-top: 24px;
        }

        .tech-spec-item {
            background: rgba(0, 0, 0, 0.3);
            border: 1px solid var(--border-glass);
            padding: 14px;
            border-radius: var(--radius-sm);
        }

        .tech-spec-item .spec-label {
            font-size: 12px;
            color: var(--text-muted);
        }

        .tech-spec-item .spec-val {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary-glow);
            margin-top: 4px;
        }

        .tech-media-box {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-glass);
        }

        /* Section 6: 实施部署流程 */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-step {
            position: relative;
        }

        .step-num-badge {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-glow));
            color: #000;
            font-weight: 900;
            font-size: 16px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .process-step h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        /* Section 7: 标杆案例墙 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .case-card {
            padding: 0;
            overflow: hidden;
        }

        .case-img-wrap {
            height: 190px;
            overflow: hidden;
        }

        .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

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

        .case-body {
            padding: 22px;
        }

        .case-type-tag {
            font-size: 12px;
            color: var(--accent-green);
            font-weight: 700;
            margin-bottom: 6px;
            display: inline-block;
        }

        .case-body h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .case-body p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 14px;
        }

        .case-metric {
            font-size: 13px;
            color: var(--primary-glow);
            font-weight: 600;
            border-top: 1px solid var(--border-glass);
            padding-top: 10px;
        }

        /* Section 8: 实测故事与数据赋能 */
        .story-layout {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            gap: 36px;
            align-items: center;
        }

        .story-card-left {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-glow);
        }

        .story-text-area h3 {
            font-size: 24px;
            margin-bottom: 14px;
        }

        .story-text-area p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .story-highlight-box {
            background: rgba(0, 102, 255, 0.1);
            border-left: 3px solid var(--primary-glow);
            padding: 14px 18px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin-bottom: 20px;
            font-size: 14px;
            color: var(--text-main);
        }

        /* Section 9: 关键运营指标带 */
        .metrics-strip {
            background: linear-gradient(90deg, #0d1b38 0%, #071024 100%);
            border-top: 1px solid var(--border-glow);
            border-bottom: 1px solid var(--border-glow);
            padding: 48px 0;
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .metric-big-num {
            font-size: 42px;
            font-weight: 900;
            color: #fff;
            letter-spacing: -1px;
            margin-bottom: 6px;
            background: linear-gradient(180deg, #fff, var(--primary-glow));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .metric-label {
            font-size: 14px;
            color: var(--text-sub);
        }

        /* Section 10: 机构口碑评价 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-quote {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 20px;
            font-style: italic;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-glass);
            padding-top: 14px;
        }

        .author-avatar {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), #3b82f6);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
        }

        .author-info h4 {
            font-size: 15px;
            color: var(--text-main);
        }

        .author-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Section 11: 行业动态与资讯 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-date {
            font-size: 12px;
            color: var(--primary-glow);
            font-weight: 600;
            margin-bottom: 8px;
        }

        .news-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .news-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .news-link {
            font-size: 13px;
            color: var(--primary-glow);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* Section 12: 部署与安全 FAQ 手风琴 */
        .faq-container {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            background: var(--bg-card);
            overflow: hidden;
        }

        .faq-header {
            padding: 18px 22px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            transition: var(--transition);
        }

        .faq-header:hover {
            color: var(--primary-glow);
        }

        .faq-icon {
            font-size: 18px;
            color: var(--primary-glow);
            transition: var(--transition);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-out;
            background: rgba(0, 0, 0, 0.2);
        }

        .faq-body-content {
            padding: 18px 22px;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
            border-top: 1px solid var(--border-glass);
        }

        .faq-item.active .faq-body {
            max-height: 200px;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        /* Section 13: 咨询与演示预约 CTA */
        .cta-box {
            background: linear-gradient(135deg, rgba(0, 102, 255, 0.2), rgba(0, 242, 254, 0.08));
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            box-shadow: 0 0 40px rgba(0, 102, 255, 0.2);
        }

        .cta-box h2 {
            font-size: 32px;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .cta-box p {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 680px;
            margin: 0 auto 32px auto;
            line-height: 1.7;
        }

        .cta-form-row {
            display: flex;
            justify-content: center;
            gap: 12px;
            max-width: 540px;
            margin: 0 auto;
        }

        .cta-input {
            flex: 1;
            padding: 12px 18px;
            background: rgba(11, 15, 25, 0.8);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

        .cta-input:focus {
            border-color: var(--primary-glow);
            box-shadow: 0 0 10px rgba(0, 242, 254, 0.3);
        }

        /* 页脚规范 */
        .site-footer {
            background: #070A12;
            border-top: 1px solid var(--border-glass);
            padding: 60px 0 24px;
            color: var(--text-muted);
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-col h4 {
            font-size: 16px;
            color: var(--text-main);
            margin-bottom: 18px;
        }

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

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

        .footer-links a:hover {
            color: var(--primary-glow);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-glass);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .hero-content, .tech-split, .story-layout {
                grid-template-columns: 1fr;
            }
            .catalog-grid, .process-grid, .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .matrix-grid, .product-grid, .cases-grid, .reviews-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(11, 15, 25, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 30px;
                gap: 20px;
                transform: translateY(-150%);
                transition: var(--transition);
                border-bottom: 1px solid var(--border-glow);
            }
            .nav-menu.open {
                transform: translateY(0);
            }
            .hero-title {
                font-size: 32px;
            }
            .section-title {
                font-size: 26px;
            }
            .catalog-grid, .process-grid, .matrix-grid, .product-grid, .cases-grid, .reviews-grid, .news-grid, .metrics-grid {
                grid-template-columns: 1fr;
            }
            .cta-form-row {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }