/* roulang page: index */
:root {
      --primary: #0047FF;
      --primary-light: #00D2FF;
      --accent: #CCFF00;
      --danger: #FF3B30;
      --bg-light: #F8FAFC;
      --bg-dark: #0B0F17;
      --card-bg: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-sub: #64748B;
      --border-color: rgba(226, 232, 240, 0.8);
      --gradient-brand: linear-gradient(135deg, #0047FF 0%, #00D2FF 100%);
      --radius-lg: 1.25rem;
      --radius-xl: 1.5rem;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-card: 0 10px 30px -10px rgba(0, 71, 255, 0.08);
      --shadow-hover: 0 20px 35px -10px rgba(0, 71, 255, 0.16);
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
    body { background-color: var(--bg-light); color: var(--text-main); line-height: 1.6; overflow-x: hidden; }
    a { text-decoration: none; color: inherit; }
    ul { list-style: none; }
    img { max-width: 100%; height: auto; display: block; }
    .container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }
    
    /* 顶部通知与主导航 */
    .top-bar { background: #0A101D; color: #94A3B8; font-size: 0.8125rem; padding: 0.5rem 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
    .top-bar-inner { display: flex; justify-content: space-between; align-items: center; }
    .top-status { display: flex; align-items: center; gap: 0.5rem; }
    .status-dot { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 8px var(--accent); }
    .site-header { position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-color); }
    .header-inner { display: flex; align-items: center; justify-content: space-between; height: 4.5rem; }
    .brand-logo { display: flex; align-items: center; gap: 0.75rem; font-size: 1.25rem; font-weight: 800; color: #0047FF; letter-spacing: -0.5px; }
    .brand-badge { background: #EFF6FF; color: #0047FF; font-size: 0.75rem; padding: 0.2rem 0.5rem; border-radius: 0.375rem; font-weight: 600; border: 1px solid rgba(0,71,255,0.15); }
    .nav-menu { display: flex; gap: 2rem; align-items: center; }
    .nav-link { font-weight: 600; color: var(--text-muted); font-size: 0.9375rem; transition: var(--transition); }
    .nav-link:hover, .nav-link.active { color: var(--primary); }
    .btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; font-weight: 600; padding: 0.75rem 1.75rem; border-radius: 9999px; transition: var(--transition); cursor: pointer; border: none; font-size: 0.9375rem; }
    .btn-primary { background: var(--gradient-brand); color: #fff; box-shadow: 0 4px 14px rgba(0, 71, 255, 0.3); }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0, 71, 255, 0.4); }
    .btn-outline { background: #fff; color: var(--text-main); border: 1px solid #CBD5E1; }
    .btn-outline:hover { background: #F1F5F9; border-color: #94A3B8; }
    .btn-accent { background: var(--accent); color: #0B0F17; font-weight: 700; }
    .btn-accent:hover { filter: brightness(1.05); transform: translateY(-2px); }

    /* 通用组件 */
    .section-padding { padding: 5.5rem 0; }
    .section-head { text-align: center; max-width: 760px; margin: 0 auto 3.5rem auto; }
    .section-badge { display: inline-flex; align-items: center; gap: 0.375rem; background: rgba(0, 71, 255, 0.08); color: var(--primary); font-size: 0.8125rem; font-weight: 700; padding: 0.35rem 0.85rem; border-radius: 9999px; margin-bottom: 1rem; }
    .section-title { font-size: 2.25rem; font-weight: 800; color: var(--text-main); line-height: 1.25; margin-bottom: 1rem; }
    .section-desc { font-size: 1rem; color: var(--text-sub); line-height: 1.75; }
    .badge-pill { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.25rem 0.65rem; border-radius: 9999px; font-size: 0.75rem; font-weight: 600; }
    .badge-live { background: rgba(255, 59, 48, 0.12); color: var(--danger); border: 1px solid rgba(255, 59, 48, 0.2); }
    .badge-tech { background: rgba(0, 210, 255, 0.12); color: #0088AA; border: 1px solid rgba(0, 210, 255, 0.25); }

    /* 板块 1: Hero 斜切与双列 */
    .hero-section { position: relative; background: #0B0F17; color: #fff; overflow: hidden; padding: 5rem 0 6.5rem 0; clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%); }
    .hero-bg-media { position: absolute; inset: 0; opacity: 0.22; background-size: cover; background-position: center; mix-blend-mode: luminosity; }
    .hero-grid { position: relative; z-index: 10; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 3.5rem; align-items: center; }
    .hero-tag { display: inline-flex; align-items: center; gap: 0.5rem; background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.15); padding: 0.35rem 0.85rem; border-radius: 9999px; font-size: 0.8125rem; margin-bottom: 1.5rem; color: #E2E8F0; }
    .hero-title { font-size: 3rem; font-weight: 900; line-height: 1.15; margin-bottom: 1.25rem; letter-spacing: -1px; }
    .hero-title span { background: var(--gradient-brand); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
    .hero-intro { font-size: 1.0625rem; color: #94A3B8; line-height: 1.8; margin-bottom: 2rem; }
    .hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
    .hero-console { background: rgba(15, 23, 42, 0.8); border: 1px solid rgba(255, 255, 255, 0.12); border-radius: var(--radius-xl); padding: 1.5rem; backdrop-filter: blur(16px); box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5); }
    .console-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid rgba(255,255,255,0.08); padding-bottom: 0.85rem; margin-bottom: 1rem; }
    .console-screens { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.75rem; margin-bottom: 1rem; }
    .screen-item { position: relative; border-radius: 0.75rem; overflow: hidden; aspect-ratio: 16/9; background: #000; border: 1px solid rgba(255,255,255,0.08); }
    .screen-item img { width: 100%; height: 100%; object-fit: cover; }
    .screen-tag { position: absolute; bottom: 0.35rem; left: 0.35rem; background: rgba(0,0,0,0.7); font-size: 0.65rem; padding: 0.15rem 0.4rem; border-radius: 0.25rem; color: #E2E8F0; }
    .screen-pvw { border: 2px solid #00D2FF; }
    .screen-pgm { border: 2px solid var(--danger); }
    .console-status-bar { display: flex; justify-content: space-between; font-size: 0.75rem; color: #64748B; background: rgba(0,0,0,0.3); padding: 0.6rem 0.8rem; border-radius: 0.5rem; }

    /* 板块 2: 流媒体指标看板 */
    .metrics-section { margin-top: -3.5rem; position: relative; z-index: 20; }
    .metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
    .metric-card { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 1.75rem 1.5rem; box-shadow: var(--shadow-card); transition: var(--transition); }
    .metric-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
    .metric-num { font-size: 2.25rem; font-weight: 800; color: var(--primary); line-height: 1; margin-bottom: 0.5rem; font-family: monospace; }
    .metric-name { font-size: 0.9375rem; font-weight: 700; color: var(--text-main); margin-bottom: 0.25rem; }
    .metric-detail { font-size: 0.8125rem; color: var(--text-sub); }

    /* 板块 3: 核心定位与技术标准 */
    .overview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
    .overview-visual { position: relative; border-radius: var(--radius-xl); overflow: hidden; box-shadow: var(--shadow-card); }
    .overview-badge-float { position: absolute; top: 1.5rem; left: 1.5rem; background: rgba(11, 15, 23, 0.85); backdrop-filter: blur(8px); padding: 0.6rem 1rem; border-radius: 9999px; color: #fff; font-size: 0.8125rem; display: flex; align-items: center; gap: 0.5rem; border: 1px solid rgba(255,255,255,0.15); }
    .std-tags { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }
    .std-tag-pill { background: #EFF6FF; border: 1px solid #BFDBFE; color: #1E40AF; padding: 0.4rem 0.85rem; border-radius: 0.5rem; font-size: 0.8125rem; font-weight: 600; }

    /* 板块 4: 6张圆角大卡核心功能 */
    .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.75rem; }
    .feature-card { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: var(--radius-xl); padding: 2.25rem 1.75rem; box-shadow: var(--shadow-card); transition: var(--transition); display: flex; flex-direction: column; }
    .feature-card:hover { transform: translateY(-4px); border-color: rgba(0, 71, 255, 0.4); box-shadow: var(--shadow-hover); }
    .feature-icon { width: 3.25rem; height: 3.25rem; border-radius: 1rem; background: #EEF2FF; color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 1.35rem; margin-bottom: 1.25rem; }
    .feature-title { font-size: 1.15rem; font-weight: 700; color: var(--text-main); margin-bottom: 0.65rem; }
    .feature-desc { font-size: 0.875rem; color: var(--text-muted); line-height: 1.65; flex-grow: 1; }

    /* 板块 5: 硬件与系统产品矩阵 */
    .products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
    .product-card { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: var(--radius-xl); overflow: hidden; display: flex; flex-direction: column; box-shadow: var(--shadow-card); }
    .product-thumb { height: 190px; overflow: hidden; position: relative; }
    .product-thumb img { width: 100%; height: 100%; object-fit: cover; }
    .product-body { padding: 1.75rem; display: flex; flex-direction: column; flex-grow: 1; }
    .product-tier { font-size: 0.8125rem; font-weight: 700; color: var(--primary); text-transform: uppercase; margin-bottom: 0.5rem; }
    .product-title { font-size: 1.25rem; font-weight: 800; margin-bottom: 0.75rem; }
    .product-specs { margin: 1.25rem 0; border-top: 1px solid #F1F5F9; padding-top: 1.25rem; flex-grow: 1; }
    .product-specs li { font-size: 0.875rem; color: var(--text-muted); margin-bottom: 0.5rem; display: flex; align-items: center; gap: 0.5rem; }
    .product-specs li i { color: #10B981; font-size: 0.75rem; }

    /* 板块 6: 广播级硬核对比区 */
    .benchmark-section { background: var(--bg-dark); color: #fff; padding: 6rem 0; }
    .benchmark-table-box { background: rgba(255, 255, 255, 0.03); border: 1px solid rgba(255, 255, 255, 0.08); border-radius: var(--radius-xl); overflow: hidden; }
    .benchmark-table { width: 100%; border-collapse: collapse; text-align: left; }
    .benchmark-table th, .benchmark-table td { padding: 1.25rem 1.5rem; border-bottom: 1px solid rgba(255, 255, 255, 0.06); font-size: 0.9375rem; }
    .benchmark-table th { background: rgba(255, 255, 255, 0.02); color: #94A3B8; font-weight: 600; }
    .benchmark-table tr:last-child td { border-bottom: none; }
    .benchmark-col-pro { background: rgba(0, 71, 255, 0.08); color: #60A5FA; font-weight: 700; }

    /* 板块 7: 调度流程推进 */
    .process-timeline { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; position: relative; }
    .process-step { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 1.5rem 1.25rem; position: relative; box-shadow: var(--shadow-sm); }
    .process-num { width: 2rem; height: 2rem; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 0.875rem; font-weight: 700; margin-bottom: 0.75rem; }
    .process-name { font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem; color: var(--text-main); }
    .process-info { font-size: 0.8125rem; color: var(--text-sub); line-height: 1.55; }

    /* 板块 8: 典型实战场景 */
    .scenarios-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
    .scenario-card { background: var(--card-bg); border-radius: var(--radius-xl); border: 1px solid var(--border-color); overflow: hidden; box-shadow: var(--shadow-card); }
    .scenario-img { height: 180px; position: relative; }
    .scenario-img img { width: 100%; height: 100%; object-fit: cover; }
    .scenario-content { padding: 1.5rem; }
    .scenario-tag { font-size: 0.75rem; color: var(--primary); font-weight: 700; margin-bottom: 0.5rem; text-transform: uppercase; }
    .scenario-title { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.65rem; }
    .scenario-desc { font-size: 0.875rem; color: var(--text-muted); line-height: 1.6; }

    /* 板块 9: 关键统计条 */
    .stats-bar { background: var(--gradient-brand); color: #fff; padding: 3.5rem 0; }
    .stats-flex { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; text-align: center; }
    .stat-val { font-size: 2.75rem; font-weight: 900; line-height: 1.1; margin-bottom: 0.35rem; }
    .stat-lbl { font-size: 0.9375rem; font-weight: 600; opacity: 0.95; }

    /* 板块 10: 行业评委与主办方口碑 */
    .testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
    .testi-card { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: var(--radius-xl); padding: 2rem; box-shadow: var(--shadow-card); display: flex; flex-direction: column; justify-content: space-between; }
    .testi-quote { font-size: 0.9375rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 1.5rem; position: relative; }
    .testi-user { display: flex; align-items: center; gap: 0.85rem; border-top: 1px solid #F1F5F9; padding-top: 1rem; }
    .testi-avatar { width: 2.75rem; height: 2.75rem; border-radius: 50%; background: #E2E8F0; display: flex; align-items: center; justify-content: center; color: var(--primary); font-weight: 700; }
    .testi-meta h4 { font-size: 0.9375rem; font-weight: 700; }
    .testi-meta p { font-size: 0.75rem; color: var(--text-sub); }

    /* 板块 11: 赛事转播资讯 */
    .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
    .news-card { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: var(--radius-xl); padding: 1.75rem; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; }
    .news-date { font-size: 0.8125rem; color: var(--text-sub); margin-bottom: 0.65rem; }
    .news-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.75rem; line-height: 1.4; color: var(--text-main); }
    .news-desc { font-size: 0.875rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 1.25rem; flex-grow: 1; }
    .news-link { color: var(--primary); font-weight: 600; font-size: 0.875rem; display: inline-flex; align-items: center; gap: 0.35rem; }

    /* 板块 12: 知识产权与平台保障 */
    .compliance-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; text-align: center; }
    .comp-item { background: #FFFFFF; border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 1.75rem 1rem; box-shadow: var(--shadow-sm); }
    .comp-icon { font-size: 2rem; color: var(--primary); margin-bottom: 0.75rem; }
    .comp-title { font-size: 1rem; font-weight: 700; margin-bottom: 0.25rem; }
    .comp-desc { font-size: 0.8125rem; color: var(--text-sub); }

    /* 板块 13: 常见技术问答 FAQ */
    .faq-container { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 1rem; }
    .faq-item { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); }
    .faq-q { padding: 1.25rem 1.5rem; font-weight: 700; font-size: 1rem; cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
    .faq-a { padding: 0 1.5rem 1.25rem 1.5rem; font-size: 0.9125rem; color: var(--text-muted); line-height: 1.65; border-top: 1px solid #F8FAFC; }

    /* 板块 14: 底端方案定制表单区 */
    .conversion-box { background: #0B0F17; border-radius: 2rem; color: #fff; overflow: hidden; display: grid; grid-template-columns: 1fr 1fr; border: 1px solid rgba(255,255,255,0.1); }
    .conv-left { padding: 3.5rem; background: linear-gradient(135deg, rgba(0, 71, 255, 0.15) 0%, rgba(0,0,0,0) 100%); display: flex; flex-direction: column; justify-content: space-between; }
    .conv-title { font-size: 2.25rem; font-weight: 800; line-height: 1.2; margin-bottom: 1rem; }
    .conv-desc { font-size: 0.9375rem; color: #94A3B8; line-height: 1.7; margin-bottom: 2rem; }
    .hotline-box { display: flex; align-items: center; gap: 1rem; padding: 1.25rem; background: rgba(255,255,255,0.05); border-radius: var(--radius-lg); border: 1px solid rgba(255,255,255,0.08); }
    .hotline-icon { width: 3rem; height: 3rem; background: var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.25rem; }
    .conv-right { padding: 3.5rem; background: #0E1524; }
    .form-group { margin-bottom: 1.25rem; }
    .form-label { display: block; font-size: 0.875rem; font-weight: 600; color: #CBD5E1; margin-bottom: 0.5rem; }
    .form-control { width: 100%; background: #1A2234; border: 1px solid #2D3748; border-radius: 0.625rem; padding: 0.85rem 1rem; color: #fff; font-size: 0.9375rem; }
    .form-control:focus { outline: none; border-color: var(--primary-light); }
    .form-btn { width: 100%; margin-top: 0.5rem; }

    /* 页脚系统 */
    .site-footer { background: #06090F; color: #64748B; border-top: 1px solid rgba(255,255,255,0.06); padding: 4.5rem 0 2rem 0; font-size: 0.875rem; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 3rem; margin-bottom: 3.5rem; }
    .footer-brand { font-size: 1.25rem; font-weight: 800; color: #fff; margin-bottom: 1rem; display: inline-block; }
    .footer-title { color: #fff; font-size: 0.9375rem; font-weight: 700; margin-bottom: 1.25rem; }
    .footer-links li { margin-bottom: 0.65rem; }
    .footer-links a:hover { color: #fff; }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 2rem; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }

    /* 移动端菜单及响应式断点 */
    .mobile-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--text-main); cursor: pointer; }
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; }
      .metrics-grid { grid-template-columns: repeat(2, 1fr); }
      .features-grid, .products-grid, .scenarios-grid, .testimonials-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
      .process-timeline { grid-template-columns: repeat(2, 1fr); }
      .compliance-grid { grid-template-columns: repeat(2, 1fr); }
      .conversion-box { grid-template-columns: 1fr; }
      .overview-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .top-bar { display: none; }
      .mobile-toggle { display: block; }
      .nav-menu { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; flex-direction: column; padding: 1.5rem; box-shadow: 0 10px 20px rgba(0,0,0,0.1); border-bottom: 1px solid var(--border-color); }
      .nav-menu.active { display: flex; }
      .header-actions { display: none; }
      .hero-title { font-size: 2.15rem; }
      .section-title { font-size: 1.75rem; }
      .metrics-grid { grid-template-columns: 1fr; }
      .features-grid, .products-grid, .scenarios-grid, .testimonials-grid, .news-grid { grid-template-columns: 1fr; }
      .process-timeline { grid-template-columns: 1fr; }
      .compliance-grid { grid-template-columns: 1fr; }
      .stats-flex { grid-template-columns: repeat(2, 1fr); }
      .conv-left, .conv-right { padding: 2rem 1.5rem; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }