/* roulang page: index */
:root {
      --primary: #0A2540;
      --primary-dark: #07192c;
      --emerald: #00D26A;
      --emerald-glow: rgba(0, 210, 106, 0.25);
      --accent: #FF5E3A;
      --accent-hover: #e04b28;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --surface-dark: #0B132B;
      --surface-dark-card: #1C2541;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --text-white: #F1F5F9;
      --border-light: #E2E8F0;
      --border-dark: #2A3B5C;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow-sm: 0 2px 4px rgba(0,0,0,0.04);
      --shadow-md: 0 10px 25px rgba(10,37,64,0.08);
      --shadow-lg: 0 20px 40px rgba(10,37,64,0.12);
      --font-stack: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.7;
      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, textarea {
      font-family: inherit;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部双行导航 */
    .top-micro-bar {
      background: var(--primary-dark);
      color: #94A3B8;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-micro-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background: var(--emerald);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--emerald);
      animation: pulse 2s infinite;
    }
    .lang-switcher-sim {
      display: flex;
      gap: 12px;
      align-items: center;
    }
    .lang-switcher-sim span {
      cursor: pointer;
      padding: 2px 6px;
      border-radius: 4px;
      font-size: 12px;
    }
    .lang-switcher-sim span.active {
      background: rgba(255, 255, 255, 0.15);
      color: #FFF;
      font-weight: 600;
    }

    .main-header {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      border-bottom: 1px solid var(--border-light);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--emerald), #00994d);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-weight: 900;
      font-size: 18px;
      box-shadow: 0 4px 10px var(--emerald-glow);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-links a {
      font-weight: 600;
      font-size: 15px;
      color: #334155;
      padding: 6px 0;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--primary);
    }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--emerald);
      border-radius: 2px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 24px;
      font-size: 15px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.25s ease;
      border: none;
    }
    .btn-accent {
      background: var(--accent);
      color: #FFF;
      box-shadow: 0 4px 14px rgba(255, 94, 58, 0.35);
    }
    .btn-accent:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(255, 94, 58, 0.45);
    }
    .btn-emerald {
      background: var(--emerald);
      color: #06311d;
    }
    .btn-emerald:hover {
      background: #00be60;
      transform: translateY(-2px);
      box-shadow: 0 4px 15px var(--emerald-glow);
    }
    .btn-outline {
      background: transparent;
      border: 1.5px solid var(--border-light);
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(10, 37, 64, 0.03);
    }

    /* 移动端菜单按钮 */
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--primary);
    }

    /* Section 公共排版 */
    section {
      padding: 84px 0;
      position: relative;
    }
    .section-header {
      margin-bottom: 50px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      background: rgba(0, 210, 106, 0.12);
      color: #008744;
      font-size: 13px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      text-transform: uppercase;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.3;
      color: var(--primary);
      margin-bottom: 14px;
    }
    .section-subtitle {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. Hero 蓝图：新品发布 + 倒计时环 + 卖点要点 + 预约购买 */
    .hero-section {
      background: linear-gradient(180deg, #FFFFFF 0%, #F1F5F9 100%), url('/assets/images/a43f831a788702ad.webp') center/cover no-repeat;
      background-blend-mode: overlay;
      padding: 80px 0 100px;
      border-bottom: 1px solid var(--border-light);
      position: relative;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 44px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-desc {
      font-size: 16px;
      color: #475569;
      line-height: 1.75;
      margin-bottom: 30px;
    }
    .hero-feature-points {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 34px;
    }
    .hero-feature-points li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 15px;
      font-weight: 600;
      color: #1E293B;
    }
    .hero-feature-points .check-icon {
      width: 20px;
      height: 20px;
      background: var(--emerald);
      color: white;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 11px;
      flex-shrink: 0;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      align-items: center;
    }
    .launch-countdown-card {
      background: var(--surface-dark);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 32px;
      color: white;
      box-shadow: var(--shadow-lg);
      position: relative;
    }
    .countdown-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 24px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      padding-bottom: 16px;
    }
    .countdown-header h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-white);
    }
    .ring-wrapper {
      display: flex;
      justify-content: space-around;
      gap: 12px;
      margin: 24px 0;
    }
    .ring-box {
      text-align: center;
      background: rgba(28, 37, 65, 0.8);
      padding: 16px 12px;
      border-radius: 10px;
      flex: 1;
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .ring-box .num {
      font-size: 28px;
      font-weight: 800;
      color: var(--emerald);
      font-variant-numeric: tabular-nums;
      line-height: 1.1;
    }
    .ring-box .label {
      font-size: 12px;
      color: #94A3B8;
      margin-top: 6px;
    }
    .audio-stream-status {
      background: rgba(0, 0, 0, 0.35);
      border-radius: 8px;
      padding: 14px;
      margin-top: 20px;
      font-size: 13px;
    }
    .audio-track-item {
      display: flex;
      justify-content: space-between;
      margin-bottom: 8px;
      color: #CBD5E1;
    }
    .audio-track-item:last-child {
      margin-bottom: 0;
    }
    .audio-bar-visual {
      height: 4px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 2px;
      overflow: hidden;
      margin-top: 4px;
    }
    .audio-bar-fill {
      height: 100%;
      background: var(--emerald);
      border-radius: 2px;
    }

    /* 2. 数据指标看板 (Data Metric Dashboard) */
    .metric-section {
      background: #FFFFFF;
      padding: 60px 0;
      border-bottom: 1px solid var(--border-light);
    }
    .metric-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .metric-card {
      background: var(--bg-light);
      border: 1px solid var(--border-light);
      padding: 28px 24px;
      border-radius: var(--radius-md);
      transition: all 0.3s ease;
      position: relative;
    }
    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #CBD5E1;
    }
    .metric-value {
      font-size: 38px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 8px;
      display: flex;
      align-items: baseline;
      gap: 4px;
    }
    .metric-value span {
      font-size: 20px;
      color: var(--emerald);
    }
    .metric-title {
      font-size: 15px;
      font-weight: 700;
      color: #334155;
      margin-bottom: 6px;
    }
    .metric-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 3. 合集目录与核心系统架构 */
    .catalog-architecture {
      background: var(--bg-light);
    }
    .arch-container-box {
      background: white;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      overflow: hidden;
      box-shadow: var(--shadow-md);
    }
    .arch-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
    }
    .arch-graphic {
      background: #0B132B;
      padding: 40px;
      color: white;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
    }
    .arch-flow-step {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 24px;
      position: relative;
    }
    .arch-flow-step:last-child {
      margin-bottom: 0;
    }
    .arch-node-badge {
      width: 32px;
      height: 32px;
      border-radius: 8px;
      background: rgba(0, 210, 106, 0.15);
      border: 1px solid var(--emerald);
      color: var(--emerald);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 13px;
      flex-shrink: 0;
    }
    .arch-flow-text h4 {
      font-size: 16px;
      margin-bottom: 4px;
      color: var(--text-white);
    }
    .arch-flow-text p {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.5;
    }
    .arch-details {
      padding: 44px;
    }
    .arch-details h3 {
      font-size: 24px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .arch-details p {
      font-size: 15px;
      color: #475569;
      margin-bottom: 24px;
      line-height: 1.7;
    }
    .compliance-pill {
      background: #F1F5F9;
      border-left: 4px solid var(--emerald);
      padding: 14px 18px;
      font-size: 13px;
      color: #334155;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      margin-top: 20px;
    }

    /* 4. 核心技术优势矩阵 (6-Grid) */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .advantage-card {
      background: white;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 30px;
      transition: all 0.3s ease;
    }
    .advantage-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #CBD5E1;
    }
    .card-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: rgba(10, 37, 64, 0.05);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 18px;
      color: var(--primary);
    }
    .advantage-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .advantage-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 5. 热门赛事解决方案与产品矩阵 (3场景大卡) */
    .solutions-section {
      background: #FFFFFF;
    }
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .solution-card {
      background: var(--bg-light);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .solution-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-5px);
    }
    .solution-img-box {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .solution-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .solution-card:hover .solution-img-box img {
      transform: scale(1.05);
    }
    .solution-body {
      padding: 26px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .solution-body h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .solution-body p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 18px;
      flex: 1;
      line-height: 1.6;
    }
    .solution-specs {
      border-top: 1px solid var(--border-light);
      padding-top: 14px;
      margin-bottom: 16px;
      font-size: 12px;
      color: #475569;
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    /* 6. 深色技术底座与算法理念区 (Deep Tech) */
    .deep-tech-section {
      background: var(--surface-dark);
      color: white;
      padding: 90px 0;
    }
    .deep-tech-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .deep-tech-info h2 {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-white);
      margin-bottom: 18px;
      line-height: 1.3;
    }
    .deep-tech-info p {
      font-size: 15px;
      color: #94A3B8;
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .code-terminal {
      background: #070D1E;
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
    }
    .terminal-header {
      background: #141E38;
      padding: 10px 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .term-btn {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .term-close { background: #FF5F56; }
    .term-min { background: #FFBD2E; }
    .term-max { background: #27C93F; }
    .terminal-body {
      padding: 20px;
      font-family: monospace;
      font-size: 13px;
      color: #E2E8F0;
      line-height: 1.6;
      overflow-x: auto;
    }
    .term-keyword { color: #FF7B72; }
    .term-string { color: #A5D6FF; }
    .term-num { color: #79C0FF; }
    .term-comment { color: #8B949E; }

    /* 7. 全球顶级赛事客户应用故事 (Case Studies) */
    .case-section {
      background: var(--bg-light);
    }
    .case-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .case-card {
      background: white;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .case-img-wrap {
      height: 220px;
      position: relative;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-tag {
      position: absolute;
      top: 16px;
      left: 16px;
      background: var(--primary);
      color: white;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 4px;
    }
    .case-body {
      padding: 28px;
    }
    .case-body h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .case-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
    }
    .case-stats-row {
      display: flex;
      justify-content: space-between;
      border-top: 1px solid var(--border-light);
      padding-top: 16px;
    }
    .case-stat-item {
      font-size: 13px;
      color: #64748B;
    }
    .case-stat-item strong {
      display: block;
      font-size: 18px;
      color: var(--primary);
    }

    /* 8. 多维度工程实测数据统计条 (Metric Counter Strip) */
    .metric-strip-section {
      background: var(--primary);
      color: white;
      padding: 50px 0;
    }
    .strip-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .strip-item {
      padding: 0 16px;
      border-right: 1px solid rgba(255, 255, 255, 0.12);
    }
    .strip-item:last-child {
      border-right: none;
    }
    .strip-number {
      font-size: 36px;
      font-weight: 800;
      color: var(--emerald);
      line-height: 1.1;
      margin-bottom: 8px;
    }
    .strip-label {
      font-size: 14px;
      color: #CBD5E1;
      font-weight: 500;
    }

    /* 9. 多语言直播技术对比看板 (Performance Comparison) */
    .compare-section {
      background: #FFFFFF;
    }
    .compare-table-wrapper {
      background: white;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .compare-table th, .compare-table td {
      padding: 18px 24px;
      font-size: 14px;
      border-bottom: 1px solid var(--border-light);
    }
    .compare-table th {
      background: #F8FAFC;
      font-weight: 700;
      color: var(--primary);
    }
    .compare-table th.highlight, .compare-table td.highlight {
      background: rgba(0, 210, 106, 0.05);
      color: #064E3B;
      font-weight: 600;
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }

    /* 10. 全球赛事技术演进里程碑 (Timeline) */
    .timeline-section {
      background: var(--bg-light);
    }
    .timeline-flow {
      position: relative;
      max-width: 900px;
      margin: 0 auto;
      padding: 20px 0;
    }
    .timeline-flow::before {
      content: '';
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      top: 0;
      bottom: 0;
      width: 2px;
      background: #CBD5E1;
    }
    .timeline-node {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 40px;
      position: relative;
    }
    .timeline-node:last-child {
      margin-bottom: 0;
    }
    .timeline-content {
      width: 44%;
      background: white;
      padding: 22px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }
    .timeline-node:nth-child(even) .timeline-content {
      margin-left: auto;
    }
    .timeline-dot {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: var(--emerald);
      border: 4px solid white;
      box-shadow: 0 0 0 2px var(--emerald);
    }
    .timeline-phase {
      font-size: 13px;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 6px;
    }
    .timeline-content h4 {
      font-size: 16px;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .timeline-content p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 11. 行业客户与转播机构专业评测 (Testimonials) */
    .reviews-section {
      background: white;
    }
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: var(--bg-light);
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-light);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-quote {
      font-size: 14px;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: #CBD5E1;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
      font-size: 14px;
    }
    .author-info h5 {
      font-size: 14px;
      font-weight: 700;
      color: var(--primary);
    }
    .author-info span {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 12. 赛事技术动态与白皮书简报 (Tech Insights) */
    .insights-section {
      background: var(--bg-light);
    }
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .insight-card {
      background: white;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .insight-img-wrap {
      height: 160px;
    }
    .insight-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .insight-body {
      padding: 22px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .insight-date {
      font-size: 12px;
      color: #94A3B8;
      margin-bottom: 8px;
    }
    .insight-body h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .insight-body p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      flex: 1;
      margin-bottom: 16px;
    }
    .insight-read-more {
      font-size: 13px;
      font-weight: 700;
      color: var(--emerald);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 13. 合规标准与平台稳定性保障 (Compliance) */
    .guarantees-section {
      background: white;
    }
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .guarantee-box {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      background: var(--bg-light);
    }
    .guarantee-icon {
      font-size: 28px;
      margin-bottom: 12px;
      color: var(--primary);
    }
    .guarantee-box h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .guarantee-box p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 14. FAQ 手风琴区 */
    .faq-section {
      background: var(--bg-light);
    }
    .faq-accordion-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    details.faq-item {
      background: white;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.25s ease;
    }
    details.faq-item[open] {
      border-color: #CBD5E1;
      box-shadow: var(--shadow-sm);
    }
    summary.faq-header {
      padding: 18px 24px;
      font-size: 15px;
      font-weight: 700;
      color: var(--primary);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    summary.faq-header::-webkit-details-marker {
      display: none;
    }
    summary.faq-header::after {
      content: '+';
      font-size: 20px;
      color: var(--text-muted);
      transition: transform 0.2s ease;
    }
    details.faq-item[open] summary.faq-header::after {
      content: '−';
      color: var(--emerald);
    }
    .faq-body {
      padding: 0 24px 20px;
      font-size: 14px;
      color: #475569;
      line-height: 1.7;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
    }

    /* 15. 全球技术合作与信号接入转化 (Lead Capture CTA) */
    .cta-lead-section {
      background: linear-gradient(135deg, var(--primary) 0%, #16365C 100%);
      color: white;
      padding: 80px 0;
    }
    .cta-box-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .cta-text-area h2 {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      color: #FFFFFF;
    }
    .cta-text-area p {
      font-size: 15px;
      color: #CBD5E1;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .cta-contact-info {
      font-size: 14px;
      color: #94A3B8;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .cta-form-card {
      background: white;
      padding: 34px;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-lg);
      color: var(--text-main);
    }
    .cta-form-card h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 18px;
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: #334155;
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.2s ease;
    }
    .form-control:focus {
      border-color: var(--primary);
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }

    /* 底部全功能信誉页脚 */
    footer.site-footer {
      background: #061320;
      color: #94A3B8;
      padding: 70px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr repeat(3, 1fr);
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand-title {
      font-size: 18px;
      font-weight: 800;
      color: white;
      margin-bottom: 14px;
    }
    .footer-about {
      line-height: 1.7;
      font-size: 13px;
      color: #64748B;
      margin-bottom: 16px;
    }
    .footer-col h5 {
      font-size: 15px;
      font-weight: 700;
      color: white;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--emerald);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: #64748B;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .hero-grid, .arch-grid, .deep-tech-grid, .cta-box-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .metric-grid, .advantage-grid, .solution-grid, .review-grid, .insights-grid, .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .strip-grid {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 24px;
      }
      .strip-item:nth-child(2) {
        border-right: none;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-micro-bar {
        display: none;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        border-top: 1px solid var(--border-light);
        gap: 16px;
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .metric-grid, .advantage-grid, .solution-grid, .case-grid, .review-grid, .insights-grid, .guarantee-grid {
        grid-template-columns: 1fr;
      }
      .strip-grid {
        grid-template-columns: 1fr;
      }
      .strip-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding-bottom: 16px;
      }
      .strip-item:last-child {
        border-bottom: none;
      }
      .timeline-flow::before {
        left: 20px;
      }
      .timeline-dot {
        left: 20px;
      }
      .timeline-content {
        width: calc(100% - 50px);
        margin-left: 50px !important;
      }
      .hero-content h1 {
        font-size: 30px;
      }
      .hero-feature-points {
        grid-template-columns: 1fr;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }