/* roulang page: index */
:root {
            --primary: #0F172A;
            --primary-dark: #0A192F;
            --accent-green: #10B981;
            --accent-cyan: #06B6D4;
            --bg-light: #F8FAFC;
            --border-color: #E2E8F0;
            --text-main: #334155;
            --text-muted: #64748B;
            --dark-card: #131E32;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 12px rgba(15,23,42,0.08);
            --shadow-glow: 0 0 20px rgba(16,185,129,0.25);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; }
        body { background-color: var(--bg-light); color: var(--text-main); line-height: 1.7; font-size: 15px; overflow-x: hidden; }
        a { text-decoration: none; color: inherit; transition: all 0.25s ease; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select { font-family: inherit; }
        
        .container { max-width: 1280px; margin: 0 auto; padding: 0 24px; width: 100%; }
        
        /* 顶部导航系统 */
        .top-meta-bar { background-color: #0B0F19; color: #94A3B8; font-size: 12px; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.08); }
        .top-meta-content { display: flex; justify-content: space-between; align-items: center; }
        .version-tag { display: inline-flex; align-items: center; gap: 6px; background: rgba(16,185,129,0.12); color: var(--accent-green); padding: 2px 8px; border-radius: 4px; font-family: monospace; }
        
        .site-header { background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px); position: sticky; top: 0; z-index: 100; border-bottom: 1px solid var(--border-color); box-shadow: var(--shadow-sm); }
        .nav-container { display: flex; justify-content: space-between; align-items: center; height: 72px; }
        .logo-box { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 20px; color: var(--primary); }
        .logo-icon { width: 36px; height: 36px; background: linear-gradient(135deg, var(--accent-green), var(--accent-cyan)); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; font-weight: 800; }
        .nav-menu { display: flex; gap: 24px; align-items: center; list-style: none; }
        .nav-link { font-size: 14px; font-weight: 500; color: #475569; position: relative; padding: 8px 0; }
        .nav-link:hover, .nav-link.active { color: var(--accent-green); }
        .nav-link.active::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px; background: var(--accent-green); }
        .nav-actions { display: flex; align-items: center; gap: 16px; }
        .search-mini { display: flex; align-items: center; background: #F1F5F9; border-radius: 20px; padding: 6px 14px; border: 1px solid transparent; }
        .search-mini input { border: none; background: transparent; outline: none; font-size: 13px; width: 110px; color: var(--primary); }
        .btn-cta { background: linear-gradient(135deg, #059669, #10B981); color: #fff; padding: 9px 20px; border-radius: 6px; font-size: 14px; font-weight: 600; border: none; cursor: pointer; transition: all 0.3s; display: inline-flex; align-items: center; gap: 6px; }
        .btn-cta:hover { box-shadow: 0 4px 14px rgba(16,185,129,0.35); transform: translateY(-1px); }
        
        /* 区块基准样式 */
        .section-block { padding: 90px 0; }
        .section-white { background: #FFFFFF; }
        .section-light { background: #F8FAFC; }
        .section-dark { background: #0B0F19; color: #F8FAFC; }
        .section-title-wrap { text-align: center; max-width: 840px; margin: 0 auto 56px auto; }
        .section-pill { display: inline-block; padding: 4px 14px; background: rgba(16,185,129,0.12); color: #059669; border-radius: 30px; font-size: 13px; font-weight: 600; margin-bottom: 14px; }
        .section-dark .section-pill { background: rgba(16,185,129,0.2); color: var(--accent-green); }
        .section-title { font-size: 32px; font-weight: 700; line-height: 1.3; color: var(--primary); margin-bottom: 16px; }
        .section-dark .section-title { color: #FFFFFF; }
        .section-desc { font-size: 16px; color: var(--text-muted); line-height: 1.7; }
        .section-dark .section-desc { color: #94A3B8; }

        /* 1. Hero 选型短问卷架构 */
        .hero-banner { background: #0A192F url('/assets/images/90f18f42b0825ce9.png') center/cover no-repeat; padding: 90px 0 100px; color: #fff; position: relative; }
        .hero-banner::before { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,25,47,0.92) 0%, rgba(11,15,25,0.97) 100%); }
        .hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center; }
        .hero-h1 { font-size: 42px; font-weight: 800; line-height: 1.25; margin-bottom: 20px; letter-spacing: -0.5px; }
        .hero-h1 span { background: linear-gradient(90deg, #10B981, #06B6D4); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .hero-intro { font-size: 16px; color: #CBD5E1; line-height: 1.8; margin-bottom: 30px; }
        .hero-stats-row { display: flex; gap: 32px; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; }
        .hero-stat-item h4 { font-size: 28px; font-weight: 800; color: var(--accent-green); margin-bottom: 2px; }
        .hero-stat-item p { font-size: 13px; color: #94A3B8; }

        .quiz-panel { background: rgba(19, 30, 50, 0.85); border: 1px solid rgba(255,255,255,0.12); backdrop-filter: blur(12px); border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow-glow); }
        .quiz-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; border-bottom: 1px solid rgba(255,255,255,0.08); padding-bottom: 14px; }
        .quiz-head h3 { font-size: 18px; font-weight: 600; color: #FFFFFF; }
        .quiz-step-badge { font-size: 12px; background: rgba(6,182,212,0.2); color: var(--accent-cyan); padding: 3px 10px; border-radius: 12px; }
        .quiz-form-group { margin-bottom: 18px; }
        .quiz-form-group label { display: block; font-size: 13px; color: #94A3B8; margin-bottom: 8px; }
        .quiz-select, .quiz-input { width: 100%; background: #0B1322; border: 1px solid rgba(255,255,255,0.15); border-radius: 6px; padding: 10px 14px; color: #fff; font-size: 14px; outline: none; }
        .quiz-select:focus, .quiz-input:focus { border-color: var(--accent-green); }
        .quiz-result-box { background: rgba(16,185,129,0.08); border: 1px dashed var(--accent-green); border-radius: 8px; padding: 14px; margin-top: 20px; display: flex; align-items: center; justify-content: space-between; }
        .quiz-result-text h5 { font-size: 14px; color: #fff; margin-bottom: 2px; }
        .quiz-result-text p { font-size: 12px; color: var(--accent-green); }
        .btn-quiz-calc { width: 100%; margin-top: 16px; background: var(--accent-green); color: #064E3B; font-weight: 700; border: none; padding: 12px; border-radius: 6px; cursor: pointer; transition: 0.2s; }
        .btn-quiz-calc:hover { background: #34D399; }

        /* 2. 已上线能力 (6 卡片网格) */
        .matrix-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .capability-card { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 30px; transition: all 0.3s; position: relative; overflow: hidden; }
        .capability-card:hover { transform: translateY(-4px); border-color: var(--accent-green); box-shadow: var(--shadow-md); }
        .capability-tag { font-size: 12px; font-weight: 600; color: #059669; background: #ECFDF5; padding: 3px 8px; border-radius: 4px; display: inline-block; margin-bottom: 12px; }
        .capability-title { font-size: 19px; font-weight: 600; color: var(--primary); margin-bottom: 10px; }
        .capability-desc { font-size: 14px; color: var(--text-muted); line-height: 1.65; margin-bottom: 18px; }
        .capability-meta { display: flex; justify-content: space-between; font-size: 12px; color: #94A3B8; border-top: 1px solid #F1F5F9; padding-top: 12px; }

        /* 3. 进行中板块 (实验中能力与实时演练) */
        .progress-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
        .progress-card { background: #FFFFFF; border: 1px solid var(--border-color); border-radius: var(--radius-md); overflow: hidden; display: flex; flex-direction: column; }
        .progress-img-wrap { height: 220px; overflow: hidden; position: relative; }
        .progress-img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
        .progress-card:hover .progress-img-wrap img { transform: scale(1.05); }
        .progress-status { position: absolute; top: 14px; left: 14px; background: rgba(15,23,42,0.85); color: var(--accent-cyan); font-size: 12px; padding: 4px 10px; border-radius: 4px; font-weight: 600; }
        .progress-content { padding: 28px; flex: 1; }
        .progress-content h3 { font-size: 20px; font-weight: 600; color: var(--primary); margin-bottom: 10px; }
        .progress-content p { font-size: 14px; color: var(--text-muted); margin-bottom: 20px; }
        .progress-bar-track { background: #E2E8F0; border-radius: 10px; height: 8px; overflow: hidden; margin-bottom: 8px; }
        .progress-bar-fill { background: linear-gradient(90deg, var(--accent-green), var(--accent-cyan)); height: 100%; }
        .progress-metric-foot { display: flex; justify-content: space-between; font-size: 12px; color: #64748B; }

        /* 4. 规划中板块 (路线图与技术探索) */
        .roadmap-timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; }
        .roadmap-col { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-md); padding: 24px; position: relative; }
        .roadmap-col::before { content: ''; position: absolute; top: 0; left: 24px; right: 24px; height: 3px; background: var(--accent-cyan); border-radius: 0 0 4px 4px; }
        .roadmap-phase { font-size: 12px; font-family: monospace; color: var(--accent-cyan); margin-bottom: 8px; }
        .roadmap-col h3 { font-size: 17px; font-weight: 600; color: #fff; margin-bottom: 10px; }
        .roadmap-col p { font-size: 13px; color: #94A3B8; line-height: 1.6; }

        /* 5. 硬件终端架构 (产品主导流) */
        .hardware-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .hardware-item { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 24px; display: flex; flex-direction: column; justify-content: space-between; }
        .hardware-item img { border-radius: 8px; height: 180px; width: 100%; object-fit: cover; margin-bottom: 20px; }
        .hardware-specs { background: #F8FAFC; border-radius: 6px; padding: 12px; margin: 16px 0; font-size: 13px; color: var(--text-main); }
        .hardware-specs div { display: flex; justify-content: space-between; padding: 4px 0; border-bottom: 1px dashed #E2E8F0; }
        .hardware-specs div:last-child { border-bottom: none; }

        /* 6. 算法深度解析 (深色科研区) */
        .algo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
        .algo-screen { background: #070B13; border: 1px solid rgba(16,185,129,0.3); border-radius: 12px; padding: 24px; font-family: monospace; }
        .algo-code-header { display: flex; justify-content: space-between; color: #64748B; font-size: 12px; border-bottom: 1px solid rgba(255,255,255,0.08); padding-bottom: 10px; margin-bottom: 14px; }
        .algo-row { display: flex; justify-content: space-between; margin-bottom: 8px; font-size: 13px; }
        .algo-row .label { color: #94A3B8; }
        .algo-row .val { color: var(--accent-green); }
        .algo-graph-mock { height: 100px; display: flex; align-items: flex-end; gap: 6px; padding: 12px 0; border-bottom: 1px dashed rgba(255,255,255,0.1); margin-bottom: 12px; }
        .graph-bar { flex: 1; background: linear-gradient(180deg, var(--accent-cyan), rgba(6,182,212,0.1)); border-radius: 2px 2px 0 0; }

        /* 7. 监测前后对比 (Before vs After) */
        .compare-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
        .compare-box { border-radius: var(--radius-md); padding: 36px; border: 1px solid var(--border-color); }
        .compare-traditional { background: #FFF5F5; border-color: #FED7D7; }
        .compare-system { background: #F0FDF4; border-color: #BBF7D0; }
        .compare-box h3 { font-size: 20px; font-weight: 700; margin-bottom: 16px; }
        .compare-traditional h3 { color: #C53030; }
        .compare-system h3 { color: #16A34A; }
        .compare-list { list-style: none; }
        .compare-list li { margin-bottom: 12px; font-size: 14px; display: flex; align-items: flex-start; gap: 10px; line-height: 1.6; }
        .compare-traditional li::before { content: '✕'; color: #E53E3E; font-weight: bold; }
        .compare-system li::before { content: '✓'; color: #16A34A; font-weight: bold; }

        /* 8. 实战验证与落地案例 */
        .case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
        .case-card { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-md); overflow: hidden; display: flex; }
        .case-side-img { width: 40%; object-fit: cover; }
        .case-body { padding: 28px; width: 60%; display: flex; flex-direction: column; justify-content: space-between; }
        .case-badge { font-size: 12px; color: #0284C7; background: #E0F2FE; padding: 2px 8px; border-radius: 4px; display: inline-block; margin-bottom: 8px; }
        .case-body h4 { font-size: 18px; font-weight: 600; color: var(--primary); margin-bottom: 8px; }
        .case-body p { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
        .case-stat-badge { background: #F8FAFC; padding: 8px 12px; border-radius: 6px; font-size: 13px; font-weight: 600; color: #0F172A; }

        /* 9. 部署套餐与配置对比 */
        .plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .plan-card { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 36px 28px; position: relative; display: flex; flex-direction: column; justify-content: space-between; }
        .plan-card.featured { border: 2px solid var(--accent-green); box-shadow: var(--shadow-md); transform: scale(1.02); }
        .plan-badge-top { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--accent-green); color: #fff; font-size: 12px; font-weight: 700; padding: 4px 14px; border-radius: 20px; }
        .plan-name { font-size: 20px; font-weight: 700; color: var(--primary); margin-bottom: 6px; }
        .plan-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }
        .plan-price { font-size: 32px; font-weight: 800; color: var(--primary); margin-bottom: 24px; }
        .plan-price span { font-size: 14px; font-weight: 400; color: #94A3B8; }
        .plan-features { list-style: none; margin-bottom: 30px; border-top: 1px solid #F1F5F9; padding-top: 20px; }
        .plan-features li { font-size: 13px; color: var(--text-main); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
        .plan-features li::before { content: '•'; color: var(--accent-green); font-size: 18px; line-height: 0; }
        .btn-plan { width: 100%; padding: 10px; text-align: center; border-radius: 6px; font-weight: 600; font-size: 14px; border: 1px solid var(--border-color); background: #F8FAFC; color: var(--primary); cursor: pointer; transition: 0.2s; }
        .plan-card.featured .btn-plan { background: var(--accent-green); color: #fff; border: none; }
        .btn-plan:hover { border-color: var(--accent-green); color: var(--accent-green); }
        .plan-card.featured .btn-plan:hover { background: #059669; color: #fff; }

        /* 10. 用户评价与实战信誉墙 */
        .testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .testimonial-card { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 28px; }
        .testimonial-quote { font-size: 14px; color: #475569; line-height: 1.7; margin-bottom: 20px; font-style: italic; }
        .testimonial-author { display: flex; align-items: center; gap: 12px; }
        .author-avatar { width: 44px; height: 44px; border-radius: 50%; background: #E2E8F0; display: flex; align-items: center; justify-content: center; font-weight: 700; color: #475569; }
        .author-info h4 { font-size: 14px; font-weight: 600; color: var(--primary); }
        .author-info p { font-size: 12px; color: #94A3B8; }

        /* 11. 更新日志与科研进展 */
        .log-list { max-width: 860px; margin: 0 auto; }
        .log-item { display: flex; gap: 32px; padding-bottom: 30px; position: relative; }
        .log-item::before { content: ''; position: absolute; left: 100px; top: 8px; bottom: 0; width: 2px; background: #E2E8F0; }
        .log-item:last-child::before { display: none; }
        .log-date { width: 80px; text-align: right; font-weight: 700; font-size: 14px; color: var(--primary); padding-top: 2px; }
        .log-node { width: 12px; height: 12px; border-radius: 50%; background: var(--accent-green); outline: 4px solid #D1FAE5; position: absolute; left: 95px; top: 6px; }
        .log-content { flex: 1; padding-left: 36px; background: #fff; border: 1px solid var(--border-color); border-radius: 8px; padding: 20px; }
        .log-ver { font-size: 14px; font-weight: 700; color: #0F172A; margin-bottom: 6px; }
        .log-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

        /* 12. 行业资讯与技术指南 */
        .insights-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 30px; }
        .insight-feature { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-md); overflow: hidden; }
        .insight-feature img { height: 260px; width: 100%; object-fit: cover; }
        .insight-body { padding: 24px; }
        .insight-list-side { display: flex; flex-direction: column; gap: 16px; }
        .insight-mini-card { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 18px; transition: 0.2s; display: flex; gap: 16px; align-items: center; }
        .insight-mini-card:hover { border-color: var(--accent-green); }
        .insight-mini-img { width: 90px; height: 75px; border-radius: 6px; object-fit: cover; flex-shrink: 0; }
        .insight-mini-txt h4 { font-size: 14px; font-weight: 600; color: var(--primary); margin-bottom: 6px; line-height: 1.4; }
        .insight-mini-txt p { font-size: 12px; color: var(--text-muted); }

        /* 13. 订阅更新与技术资料收发 */
        .subscribe-box { background: linear-gradient(135deg, #0F172A 0%, #0A192F 100%); border-radius: var(--radius-lg); padding: 56px 40px; color: #fff; border: 1px solid rgba(255,255,255,0.1); text-align: center; max-width: 900px; margin: 0 auto; box-shadow: var(--shadow-md); }
        .subscribe-form { display: flex; justify-content: center; gap: 12px; margin-top: 28px; max-width: 560px; margin-left: auto; margin-right: auto; }
        .subscribe-input { flex: 1; padding: 12px 18px; border-radius: 6px; border: 1px solid rgba(255,255,255,0.2); background: rgba(255,255,255,0.05); color: #fff; outline: none; font-size: 14px; }
        .subscribe-input:focus { border-color: var(--accent-green); }

        /* 页脚体系 */
        .site-footer { background: #0B0F19; color: #94A3B8; font-size: 13px; padding: 70px 0 24px; border-top: 1px solid rgba(255,255,255,0.08); }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; margin-bottom: 50px; }
        .footer-logo { font-size: 18px; font-weight: 700; color: #fff; display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
        .footer-desc { font-size: 13px; line-height: 1.7; color: #64748B; margin-bottom: 16px; }
        .footer-col h4 { font-size: 14px; font-weight: 600; color: #F8FAFC; margin-bottom: 18px; }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a:hover { color: var(--accent-green); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 24px; text-align: center; font-size: 12px; color: #475569; display: flex; justify-content: space-between; }

        /* 移动适配与断点 */
        @media (max-width: 1024px) {
            .hero-grid, .algo-grid, .insights-grid { grid-template-columns: 1fr; }
            .matrix-grid, .hardware-grid, .plan-grid, .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
            .roadmap-timeline { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .section-block { padding: 60px 0; }
            .hero-h1 { font-size: 30px; }
            .matrix-grid, .hardware-grid, .plan-grid, .testimonial-grid, .progress-grid, .compare-wrap, .case-grid { grid-template-columns: 1fr; }
            .case-card { flex-direction: column; }
            .case-side-img, .case-body { width: 100%; }
            .roadmap-timeline { grid-template-columns: 1fr; }
            .nav-menu, .search-mini { display: none; }
            .subscribe-form { flex-direction: column; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; gap: 8px; }
        }