/* roulang page: index */
:root {
      --primary: #0f172a;
      --primary-light: #1e293b;
      --accent: #0284c7;
      --accent-hover: #0369a1;
      --success: #10b981;
      --warning: #f59e0b;
      --danger: #ef4444;
      --bg-main: #f8fafc;
      --bg-white: #ffffff;
      --bg-dark: #0b0f19;
      --bg-dark-card: #131b2e;
      --text-main: #0f172a;
      --text-body: #334155;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --border-dark: #1e293b;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 6px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-lg: 0 12px 30px -4px rgba(15, 23, 42, 0.1);
      --container-max: 1280px;
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
      color: var(--text-body);
      background-color: var(--bg-main);
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: 1rem;
    }

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

    /* 顶部信息条与导航 */
    .top-bar {
      background-color: #090d16;
      color: #94a3b8;
      font-size: 0.85rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      padding: 6px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .pulse-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: var(--success);
      border-radius: 50%;
      box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
      animation: pulse 2s infinite;
      margin-right: 6px;
    }
    @keyframes pulse {
      0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
      70% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
      100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
    }

    header.main-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo i {
      color: var(--accent);
      font-size: 1.6rem;
    }
    .brand-tag {
      font-size: 0.7rem;
      background: #e0f2fe;
      color: var(--accent);
      padding: 2px 8px;
      border-radius: 20px;
      font-weight: 600;
      letter-spacing: 0;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 24px;
      list-style: none;
    }
    .nav-links a {
      font-weight: 500;
      color: var(--text-body);
      font-size: 0.95rem;
      padding: 6px 0;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--accent);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--accent);
      transition: var(--transition);
    }
    .nav-links a:hover::after, .nav-links a.active::after {
      width: 100%;
    }
    .nav-cta-btn {
      background-color: var(--primary);
      color: #fff !important;
      padding: 9px 20px !important;
      border-radius: var(--radius-sm);
      font-weight: 600 !important;
      font-size: 0.9rem !important;
      box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
    }
    .nav-cta-btn:hover {
      background-color: var(--accent);
      transform: translateY(-1px);
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.4rem;
      color: var(--primary);
      cursor: pointer;
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
    }
    .btn-primary {
      background-color: var(--accent);
      color: #fff;
    }
    .btn-primary:hover {
      background-color: var(--accent-hover);
      box-shadow: 0 6px 18px rgba(2, 132, 199, 0.35);
      transform: translateY(-2px);
    }
    .btn-secondary {
      background-color: rgba(255, 255, 255, 0.12);
      color: #fff;
      border-color: rgba(255, 255, 255, 0.25);
      backdrop-filter: blur(8px);
    }
    .btn-secondary:hover {
      background-color: rgba(255, 255, 255, 0.2);
      border-color: #fff;
      color: #fff;
    }
    .btn-dark {
      background-color: var(--primary);
      color: #fff;
    }
    .btn-dark:hover {
      background-color: var(--accent);
    }

    /* 板块通用头部 */
    .section-head {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 50px;
    }
    .section-badge {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 12px;
      border-radius: 20px;
      background-color: #e0f2fe;
      color: var(--accent);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 16px;
      line-height: 1.35;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* 1. 首屏全宽视频遮罩Banner (Hero Section) */
    .hero-section {
      position: relative;
      background-color: #0b1120;
      color: #fff;
      padding: 110px 0 100px;
      overflow: hidden;
      background-image: linear-gradient(to bottom, rgba(11, 17, 32, 0.88), rgba(11, 17, 32, 0.95)), url('/assets/images/9c926498249d43af.jpg');
      background-size: cover;
      background-position: center;
    }
    .hero-container {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 980px;
      margin: 0 auto;
    }
    .hero-tagline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(2, 132, 199, 0.15);
      border: 1px solid rgba(2, 132, 199, 0.35);
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 0.9rem;
      color: #38bdf8;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 3.2rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 24px;
      letter-spacing: -0.5px;
      color: #f8fafc;
    }
    .hero-title span {
      background: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.15rem;
      line-height: 1.8;
      color: #cbd5e1;
      margin-bottom: 38px;
      max-width: 860px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 18px;
      margin-bottom: 50px;
    }
    .hero-video-window {
      position: relative;
      background: #0f172a;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.15);
      box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.7);
      overflow: hidden;
      aspect-ratio: 21 / 9;
      max-height: 480px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .hero-video-window img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.7;
    }
    .video-play-overlay {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 14px;
      cursor: pointer;
    }
    .play-btn-circle {
      width: 72px;
      height: 72px;
      background-color: var(--accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.6rem;
      box-shadow: 0 0 0 10px rgba(2, 132, 199, 0.25);
      transition: var(--transition);
    }
    .video-play-overlay:hover .play-btn-circle {
      transform: scale(1.1);
      box-shadow: 0 0 0 16px rgba(2, 132, 199, 0.35);
    }
    .play-text {
      font-size: 0.95rem;
      font-weight: 600;
      letter-spacing: 0.5px;
      text-shadow: 0 2px 4px rgba(0,0,0,0.6);
    }

    /* 2. 即时态势与倒计时条 (Metrics Bar & Countdown) */
    .metrics-bar-section {
      background: #080d1a;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 30px 0;
      color: #fff;
    }
    .metrics-bar-grid {
      display: grid;
      grid-template-columns: 1.2fr repeat(4, 1fr);
      gap: 24px;
      align-items: center;
    }
    .countdown-widget {
      border-right: 1px solid rgba(255, 255, 255, 0.1);
      padding-right: 20px;
    }
    .countdown-title {
      font-size: 0.85rem;
      color: #94a3b8;
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .countdown-timer {
      display: flex;
      gap: 8px;
    }
    .timer-unit {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.12);
      padding: 4px 8px;
      border-radius: var(--radius-sm);
      font-size: 1.1rem;
      font-weight: 700;
      color: #38bdf8;
      min-width: 44px;
      text-align: center;
    }
    .metric-item {
      padding: 0 10px;
    }
    .metric-num {
      font-size: 1.85rem;
      font-weight: 800;
      color: #fff;
      display: flex;
      align-items: baseline;
      gap: 4px;
      line-height: 1.2;
    }
    .metric-num small {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--accent);
    }
    .metric-label {
      font-size: 0.85rem;
      color: #94a3b8;
      margin-top: 4px;
    }
    .metric-progress {
      height: 4px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 2px;
      margin-top: 8px;
      overflow: hidden;
    }
    .metric-progress-bar {
      height: 100%;
      background: var(--accent);
      border-radius: 2px;
    }

    /* 3. 系统技术架构区 (System Architecture) */
    .arch-section {
      padding: 90px 0;
      background-color: var(--bg-white);
    }
    .arch-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .arch-content h3 {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 20px;
      line-height: 1.4;
    }
    .arch-content p {
      font-size: 1rem;
      color: var(--text-body);
      margin-bottom: 24px;
      line-height: 1.8;
    }
    .arch-spec-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 30px;
    }
    .arch-spec-item {
      display: flex;
      gap: 14px;
      align-items: flex-start;
    }
    .arch-spec-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background-color: #f0f9ff;
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      flex-shrink: 0;
    }
    .arch-spec-text h4 {
      font-size: 1.05rem;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .arch-spec-text p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 0;
      line-height: 1.5;
    }
    .arch-visual {
      background: #f1f5f9;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }
    .arch-visual img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }

    /* 4. 核心优势矩阵 (Core Advantages - 6卡片) */
    .advantages-section {
      padding: 90px 0;
      background-color: var(--bg-main);
    }
    .adv-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .adv-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 32px 26px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }
    .adv-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: #bae6fd;
    }
    .adv-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: #e0f2fe;
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
    }
    .adv-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .adv-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 5. 热门产品功能区 (Product Modules - 3卡片) */
    .modules-section {
      padding: 90px 0;
      background-color: var(--bg-white);
    }
    .module-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .module-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: var(--bg-white);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .module-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }
    .module-thumb {
      height: 210px;
      overflow: hidden;
      position: relative;
    }
    .module-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .module-card:hover .module-thumb img {
      transform: scale(1.05);
    }
    .module-pill {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(15, 23, 42, 0.85);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 4px;
      backdrop-filter: blur(4px);
    }
    .module-body {
      padding: 26px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .module-body h3 {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .module-body p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      flex: 1;
    }
    .module-list {
      list-style: none;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .module-list li {
      font-size: 0.88rem;
      color: var(--text-body);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .module-list li i {
      color: var(--success);
      font-size: 0.8rem;
    }

    /* 6. 深色实战案例与高负载保障 (Dark Tech Showcase) */
    .dark-showcase-section {
      background-color: var(--bg-dark);
      color: #fff;
      padding: 95px 0;
      position: relative;
    }
    .dark-showcase-head .section-title {
      color: #fff;
    }
    .dark-showcase-head .section-desc {
      color: #94a3b8;
    }
    .dark-tech-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .dark-card-box {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 36px;
    }
    .dark-badge {
      display: inline-block;
      padding: 3px 10px;
      border-radius: 4px;
      background: rgba(16, 185, 129, 0.2);
      color: #34d399;
      font-size: 0.8rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .dark-card-box h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 14px;
      color: #f1f5f9;
    }
    .dark-card-box p {
      color: #94a3b8;
      font-size: 0.95rem;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .hot-switch-flow {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .flow-step {
      display: flex;
      align-items: center;
      gap: 14px;
      background: rgba(255, 255, 255, 0.04);
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--accent);
    }
    .flow-num {
      font-weight: 800;
      color: #38bdf8;
      font-size: 0.95rem;
    }
    .flow-detail h4 {
      font-size: 0.95rem;
      color: #f8fafc;
      margin-bottom: 2px;
    }
    .flow-detail p {
      font-size: 0.82rem;
      color: #64748b;
      margin-bottom: 0;
    }
    .dark-visual-panel {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-dark);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    }
    .dark-visual-panel img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }

    /* 7. 服务矩阵与全生命周期 (Service Matrix - 4列) */
    .services-section {
      padding: 90px 0;
      background-color: var(--bg-main);
    }
    .service-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .service-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .service-card:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .service-icon {
      font-size: 1.8rem;
      color: var(--accent);
      margin-bottom: 16px;
    }
    .service-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .service-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 8. 效能分析与结果对比 (Performance Benchmark) */
    .benchmark-section {
      padding: 90px 0;
      background-color: var(--bg-white);
    }
    .benchmark-table-wrapper {
      max-width: 1040px;
      margin: 0 auto;
      background: #fff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }
    .benchmark-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .benchmark-table th {
      padding: 20px 24px;
      font-size: 1rem;
      font-weight: 700;
      background: #f8fafc;
      border-bottom: 2px solid var(--border-color);
      color: var(--primary);
    }
    .benchmark-table th:nth-child(2) {
      color: var(--text-muted);
    }
    .benchmark-table th:nth-child(3) {
      color: var(--accent);
      background: #f0f9ff;
    }
    .benchmark-table td {
      padding: 18px 24px;
      font-size: 0.95rem;
      border-bottom: 1px solid var(--border-color);
    }
    .benchmark-table tr:last-child td {
      border-bottom: none;
    }
    .benchmark-table td:nth-child(3) {
      background: #f0f9ff;
      font-weight: 600;
      color: var(--primary);
    }
    .badge-diff {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 0.78rem;
    }
    .badge-diff.up {
      background: #dcfce7;
      color: #15803d;
    }
    .badge-diff.down {
      background: #fee2e2;
      color: #b91c1c;
    }

    /* 9. 里程碑与实战阶段 (Milestones & Case Stories) */
    .milestones-section {
      padding: 90px 0;
      background-color: var(--bg-main);
    }
    .timeline-container {
      max-width: 960px;
      margin: 0 auto;
      position: relative;
    }
    .timeline-container::before {
      content: '';
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 2px;
      background-color: var(--border-color);
      transform: translateX(-50%);
    }
    .timeline-node {
      display: flex;
      justify-content: flex-end;
      padding: 20px 0;
      position: relative;
      width: 50%;
    }
    .timeline-node:nth-child(even) {
      align-self: flex-end;
      margin-left: 50%;
      justify-content: flex-start;
    }
    .timeline-dot {
      position: absolute;
      top: 30px;
      right: -11px;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: var(--bg-white);
      border: 4px solid var(--accent);
      z-index: 2;
    }
    .timeline-node:nth-child(even) .timeline-dot {
      left: -10px;
      right: auto;
    }
    .timeline-content {
      width: calc(100% - 40px);
      background: #fff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .timeline-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 6px;
    }
    .timeline-content h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .timeline-content p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 10. 用户评价与行业口碑 (Testimonials - 3列) */
    .testimonials-section {
      padding: 90px 0;
      background-color: var(--bg-white);
    }
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .testi-card {
      background: var(--bg-main);
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-rating {
      color: #f59e0b;
      margin-bottom: 16px;
      font-size: 0.9rem;
    }
    .testi-quote {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 24px;
      font-style: italic;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .testi-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #e2e8f0;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-size: 1.2rem;
    }
    .testi-meta h4 {
      font-size: 0.95rem;
      color: var(--primary);
      font-weight: 700;
    }
    .testi-meta span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 11. 技术动态与更新日志 (Tech Insights - 3列) */
    .insights-section {
      padding: 90px 0;
      background-color: var(--bg-main);
    }
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .insight-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .insight-thumb {
      height: 180px;
      overflow: hidden;
    }
    .insight-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .insight-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .insight-date {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .insight-body h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .insight-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex: 1;
    }
    .insight-link {
      color: var(--accent);
      font-weight: 600;
      font-size: 0.9rem;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 12. 平台保障与合规资质 (Security & Compliance) */
    .security-section {
      padding: 70px 0;
      background-color: var(--bg-white);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .sec-badges-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .sec-badge-card {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 16px 20px;
      border-radius: var(--radius-md);
      background: #f8fafc;
      border: 1px solid var(--border-color);
    }
    .sec-badge-card i {
      font-size: 2rem;
      color: var(--accent);
    }
    .sec-badge-info h4 {
      font-size: 1rem;
      color: var(--primary);
      font-weight: 700;
      margin-bottom: 2px;
    }
    .sec-badge-info p {
      font-size: 0.82rem;
      color: var(--text-muted);
      margin-bottom: 0;
    }

    /* 13. 快速解答手风琴 (FAQ Accordion) */
    .faq-section {
      padding: 90px 0;
      background-color: var(--bg-main);
    }
    .faq-wrapper {
      max-width: 920px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-question {
      padding: 20px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 700;
      font-size: 1.05rem;
      color: var(--primary);
      user-select: none;
    }
    .faq-question:hover {
      color: var(--accent);
    }
    .faq-toggle-icon {
      font-size: 0.9rem;
      transition: transform 0.3s ease;
      color: var(--text-muted);
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(180deg);
      color: var(--accent);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background-color: #fafafa;
    }
    .faq-answer-inner {
      padding: 0 24px 20px;
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
      border-top: 1px solid #f1f5f9;
    }

    /* 14. 转化表单与终极接入 (Final CTA & Form) */
    .cta-form-section {
      padding: 100px 0;
      background-color: #0b1120;
      color: #fff;
      position: relative;
      background-image: linear-gradient(rgba(11, 17, 32, 0.92), rgba(11, 17, 32, 0.95)), url('/assets/images/29ebc3d5405d8452.jpg');
      background-size: cover;
      background-position: center;
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .cta-text h2 {
      font-size: 2.4rem;
      font-weight: 900;
      line-height: 1.3;
      margin-bottom: 20px;
      color: #fff;
    }
    .cta-text p {
      font-size: 1.05rem;
      color: #94a3b8;
      line-height: 1.8;
      margin-bottom: 30px;
    }
    .cta-perks {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .cta-perk-item {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #cbd5e1;
      font-size: 0.95rem;
    }
    .cta-perk-item i {
      color: var(--success);
    }
    .form-card {
      background: #131b2e;
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    }
    .form-card h3 {
      font-size: 1.4rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: #fff;
    }
    .form-card p {
      font-size: 0.88rem;
      color: #94a3b8;
      margin-bottom: 24px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      color: #cbd5e1;
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.15);
      background: rgba(255, 255, 255, 0.05);
      color: #fff;
      font-size: 0.95rem;
      transition: var(--transition);
    }
    .form-control:focus {
      outline: none;
      border-color: var(--accent);
      background: rgba(255, 255, 255, 0.08);
      box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.3);
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    /* 页脚 (Footer) */
    footer.main-footer {
      background: #080c16;
      color: #94a3b8;
      font-size: 0.9rem;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 65px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand h3 {
      font-size: 1.3rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-brand p {
      line-height: 1.7;
      color: #64748b;
      margin-bottom: 20px;
      font-size: 0.88rem;
    }
    .footer-col h4 {
      font-size: 1rem;
      font-weight: 700;
      color: #f1f5f9;
      margin-bottom: 18px;
      position: relative;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-col ul a {
      color: #94a3b8;
      font-size: 0.88rem;
    }
    .footer-col ul a:hover {
      color: var(--accent);
    }
    .footer-contact-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      font-size: 0.88rem;
    }
    .footer-contact-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: #94a3b8;
    }
    .footer-contact-item i {
      color: var(--accent);
      margin-top: 4px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 25px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.82rem;
      color: #64748b;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-title { font-size: 2.6rem; }
      .metrics-bar-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
      .countdown-widget { grid-column: span 2; border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 15px; }
      .adv-grid, .module-grid, .service-grid, .insights-grid, .testi-grid, .sec-badges-grid { grid-template-columns: repeat(2, 1fr); }
      .cta-grid, .arch-grid, .dark-tech-grid { grid-template-columns: 1fr; gap: 40px; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .top-bar { display: none; }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--border-color);
        gap: 16px;
      }
      .nav-links.active { display: flex; }
      .mobile-toggle { display: block; }
      .hero-title { font-size: 2rem; }
      .hero-desc { font-size: 1rem; }
      .section-title { font-size: 1.6rem; }
      .adv-grid, .module-grid, .service-grid, .insights-grid, .testi-grid, .sec-badges-grid { grid-template-columns: 1fr; }
      .timeline-container::before { left: 20px; }
      .timeline-node { width: 100%; justify-content: flex-start; padding-left: 45px; }
      .timeline-node:nth-child(even) { margin-left: 0; padding-left: 45px; }
      .timeline-dot { left: 11px !important; right: auto !important; }
      .timeline-content { width: 100%; }
      .form-row { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .benchmark-table-wrapper { overflow-x: auto; }
      .hero-video-window { aspect-ratio: 16 / 9; }
    }