/* roulang page: index */
:root {
      --primary: #0052D9;
      --primary-hover: #003cab;
      --primary-light: #EBF2FF;
      --accent: #00A4FF;
      --accent-glow: rgba(0, 164, 255, 0.25);
      --dark: #0A1224;
      --dark-card: #131E36;
      --dark-border: #1E2D4E;
      --text-main: #1D2129;
      --text-muted: #4E5969;
      --text-light: #86909C;
      --bg-page: #F8FAFC;
      --bg-alt: #F1F4F9;
      --bg-white: #FFFFFF;
      --border: #E5E6EB;
      --success: #00A870;
      --warning: #ED7B2F;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 2px 8px rgba(0, 40, 100, 0.04);
      --shadow-md: 0 8px 24px rgba(0, 40, 100, 0.08);
      --shadow-lg: 0 16px 36px rgba(0, 40, 100, 0.12);
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    button, input, select {
      font-family: inherit;
    }

    /* 容器规范 */
    .container {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部双行导航 */
    .top-bar {
      background-color: var(--dark);
      color: #94A3B8;
      font-size: 0.85rem;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-info {
      display: flex;
      gap: 20px;
    }
    .top-info span i {
      color: var(--accent);
      margin-right: 6px;
    }
    .top-links {
      display: flex;
      gap: 16px;
    }
    .top-links a:hover {
      color: var(--accent);
    }

    .main-nav {
      background-color: rgba(255, 255, 255, 0.98);
      backdrop-filter: blur(10px);
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
      border-bottom: 1px solid var(--border);
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo .logo-icon {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.25rem;
      box-shadow: 0 4px 10px rgba(0, 82, 217, 0.3);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-menu li a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 6px 0;
      position: relative;
    }
    .nav-menu li a:hover,
    .nav-menu li a.active {
      color: var(--primary);
    }
    .nav-menu li a::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: var(--transition);
    }
    .nav-menu li a:hover::after,
    .nav-menu li a.active::after {
      width: 100%;
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      outline: none;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(0, 82, 217, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(0, 82, 217, 0.35);
    }
    .btn-primary:active {
      transform: translateY(0);
    }
    .btn-outline {
      background-color: #fff;
      color: var(--primary);
      border-color: var(--primary);
    }
    .btn-outline:hover {
      background-color: var(--primary-light);
    }
    .btn-white {
      background-color: #fff;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .btn-white:hover {
      background-color: #f8fafc;
      transform: translateY(-2px);
    }
    .btn-block {
      width: 100%;
    }
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 板块通用头部 */
    .section-spacing {
      padding: 90px 0;
    }
    .section-title-wrap {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 56px auto;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 600;
      border-radius: 30px;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 蓝图要求：Hero 变体 - 斜切色块首屏，大标题压在色块上 + 单 CTA */
    .hero-angled {
      position: relative;
      background-color: #ffffff;
      padding: 90px 0 130px;
      overflow: hidden;
    }
    .hero-angled::before {
      content: "";
      position: absolute;
      top: 0;
      right: -8%;
      width: 62%;
      height: 100%;
      background: linear-gradient(135deg, rgba(0, 82, 217, 0.08) 0%, rgba(0, 164, 255, 0.15) 100%);
      transform: skewX(-14deg);
      transform-origin: top right;
      z-index: 1;
      border-left: 2px solid rgba(0, 82, 217, 0.15);
    }
    .hero-content-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-badge-live {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #E8F4FF;
      color: var(--primary);
      padding: 6px 16px;
      border-radius: 20px;
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 24px;
      border: 1px solid rgba(0, 82, 217, 0.2);
    }
    .hero-badge-live i {
      color: var(--success);
      animation: pulseDot 2s infinite;
    }
    @keyframes pulseDot {
      0% { opacity: 0.4; }
      50% { opacity: 1; }
      100% { opacity: 0.4; }
    }
    .hero-angled h1 {
      font-size: 2.85rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 24px;
      letter-spacing: -1px;
    }
    .hero-angled h1 span {
      background: linear-gradient(120deg, var(--primary) 0%, var(--accent) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead-text {
      font-size: 1.1rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 34px;
    }
    .hero-action-area {
      display: flex;
      align-items: center;
      gap: 20px;
      margin-bottom: 40px;
    }
    .hero-stats-row {
      display: flex;
      gap: 32px;
      padding-top: 24px;
      border-top: 1px solid var(--border);
    }
    .hero-stat-item h4 {
      font-size: 1.65rem;
      font-weight: 700;
      color: var(--primary);
    }
    .hero-stat-item p {
      font-size: 0.85rem;
      color: var(--text-light);
    }
    .hero-visual-board {
      position: relative;
    }
    .hero-img-main {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-lg);
      border: 6px solid #fff;
      position: relative;
      z-index: 2;
    }
    .hero-floating-card {
      position: absolute;
      background: #ffffff;
      padding: 16px 20px;
      border-radius: var(--radius-md);
      box-shadow: 0 12px 32px rgba(0, 30, 80, 0.15);
      z-index: 3;
      border-left: 4px solid var(--primary);
      bottom: -24px;
      left: -24px;
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .floating-icon {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
    }
    .floating-text h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .floating-text p {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* 板块 2：合集目录与核心服务（响应蓝图顺序） */
    .service-catalog-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .catalog-item-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 32px 24px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .catalog-item-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: transparent;
      transition: var(--transition);
    }
    .catalog-item-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(0, 82, 217, 0.3);
    }
    .catalog-item-card:hover::before {
      background: var(--primary);
    }
    .catalog-icon-box {
      width: 56px;
      height: 56px;
      border-radius: var(--radius-sm);
      background: var(--bg-alt);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
      transition: var(--transition);
    }
    .catalog-item-card:hover .catalog-icon-box {
      background: var(--primary);
      color: #fff;
    }
    .catalog-item-card h3 {
      font-size: 1.2rem;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .catalog-item-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 3：技术底层体系介绍 (图文非对称) */
    .tech-intro-section {
      background-color: var(--bg-white);
    }
    .tech-two-cols {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .tech-img-holder {
      position: relative;
    }
    .tech-img-holder img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
    }
    .tech-features-list {
      list-style: none;
      margin-top: 28px;
    }
    .tech-features-list li {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 20px;
    }
    .tech-check-icon {
      color: var(--success);
      font-size: 1.15rem;
      margin-top: 4px;
      flex-shrink: 0;
    }
    .tech-features-list h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .tech-features-list p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 4：相关推荐与核心产品矩阵 */
    .hot-products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      align-items: stretch;
    }
    .product-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
    }
    .product-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }
    .product-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-md);
    }
    .product-badge-flag {
      position: absolute;
      top: -14px;
      right: 28px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #ffffff;
      padding: 4px 14px;
      border-radius: 20px;
      font-size: 0.78rem;
      font-weight: 700;
      letter-spacing: 0.5px;
    }
    .product-card-header {
      border-bottom: 1px solid var(--border);
      padding-bottom: 24px;
      margin-bottom: 24px;
    }
    .product-card-header h3 {
      font-size: 1.35rem;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .product-card-header .prod-target {
      font-size: 0.88rem;
      color: var(--primary);
      font-weight: 600;
      background: var(--primary-light);
      display: inline-block;
      padding: 2px 10px;
      border-radius: 4px;
    }
    .product-checklist {
      list-style: none;
      margin-bottom: 30px;
      flex-grow: 1;
    }
    .product-checklist li {
      font-size: 0.92rem;
      color: var(--text-muted);
      margin-bottom: 14px;
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }
    .product-checklist li i {
      color: var(--primary);
      font-size: 0.9rem;
      margin-top: 4px;
    }

    /* 板块 5：深色沉浸式案例与底层理念区 (Dark Tech) */
    .dark-showcase-section {
      background-color: var(--dark);
      color: #FFFFFF;
      position: relative;
      overflow: hidden;
    }
    .dark-showcase-section::before {
      content: "";
      position: absolute;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(0, 164, 255, 0.15) 0%, transparent 70%);
      top: 10%;
      left: -10%;
      pointer-events: none;
    }
    .dark-showcase-section .section-title {
      color: #ffffff;
    }
    .dark-showcase-section .section-desc {
      color: #94A3B8;
    }
    .dark-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .dark-card-box {
      background: var(--dark-card);
      border: 1px solid var(--dark-border);
      border-radius: var(--radius-lg);
      padding: 36px;
    }
    .dark-card-box h3 {
      font-size: 1.4rem;
      color: #ffffff;
      margin-bottom: 16px;
    }
    .dark-card-box p {
      color: #94A3B8;
      font-size: 0.95rem;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .dark-spec-row {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }
    .spec-block {
      background: rgba(255, 255, 255, 0.04);
      padding: 16px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--accent);
    }
    .spec-block h5 {
      color: var(--accent);
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 4px;
    }
    .spec-block span {
      color: #94A3B8;
      font-size: 0.82rem;
    }
    .dark-visual-preview img {
      border-radius: var(--radius-lg);
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
      border: 1px solid var(--dark-border);
    }

    /* 板块 6：全景功能架构演示与工作流 (Tab 联动) */
    .tab-nav-wrapper {
      display: flex;
      justify-content: center;
      gap: 12px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    .tab-btn {
      background: var(--bg-white);
      border: 1px solid var(--border);
      padding: 12px 24px;
      border-radius: 30px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-muted);
      cursor: pointer;
      transition: var(--transition);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .tab-btn.active, .tab-btn:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
      box-shadow: 0 4px 12px rgba(0, 82, 217, 0.25);
    }
    .tab-content-panel {
      display: none;
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-md);
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      align-items: center;
    }
    .tab-content-panel.active {
      display: grid;
    }
    .tab-text-info h3 {
      font-size: 1.5rem;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .tab-text-info p {
      font-size: 0.98rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .tab-steps-list {
      list-style: none;
    }
    .tab-steps-list li {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
      font-size: 0.92rem;
      color: var(--text-main);
      font-weight: 500;
    }
    .tab-steps-list li i {
      color: var(--primary);
    }
    .tab-mockup img {
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border);
    }

    /* 板块 7：平台服务承载数据统计条 (Key Metrics) */
    .metrics-bar-section {
      background: linear-gradient(90deg, var(--primary) 0%, #003cab 100%);
      color: #ffffff;
      padding: 56px 0;
    }
    .metrics-grid-four {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-col {
      padding: 0 20px;
      border-right: 1px solid rgba(255, 255, 255, 0.15);
    }
    .metric-col:last-child {
      border-right: none;
    }
    .metric-value {
      font-size: 2.6rem;
      font-weight: 800;
      letter-spacing: -1px;
      color: #ffffff;
      margin-bottom: 6px;
      font-family: Consolas, Monaco, "Courier New", monospace;
    }
    .metric-value small {
      font-size: 1.1rem;
      font-weight: 500;
    }
    .metric-label {
      font-size: 0.95rem;
      color: rgba(255, 255, 255, 0.85);
    }

    /* 板块 8：标杆用户场景化实践故事 (User Stories) */
    .user-story-card {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      margin-bottom: 32px;
    }
    .user-story-card:nth-child(even) {
      grid-template-columns: 1fr 1fr;
      direction: rtl;
    }
    .user-story-card:nth-child(even) .story-info {
      direction: ltr;
    }
    .user-story-card:nth-child(even) .story-img {
      direction: ltr;
    }
    .story-img img {
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      width: 100%;
      height: 280px;
      object-fit: cover;
    }
    .story-info h3 {
      font-size: 1.45rem;
      margin-bottom: 14px;
      color: var(--text-main);
    }
    .story-info p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .story-tag-box {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 20px;
    }
    .story-tag {
      background: var(--bg-alt);
      color: var(--primary);
      padding: 4px 12px;
      border-radius: 4px;
      font-size: 0.82rem;
      font-weight: 600;
    }

    /* 板块 9：对比我们 vs 传统方案 (差异化对比) */
    .compare-table-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border);
      overflow: hidden;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 20px 24px;
      border-bottom: 1px solid var(--border);
    }
    .compare-table th {
      background: var(--bg-alt);
      font-weight: 700;
      color: var(--text-main);
      font-size: 1.05rem;
    }
    .compare-table th.highlight-col, .compare-table td.highlight-col {
      background: rgba(0, 82, 217, 0.04);
      color: var(--primary);
      font-weight: 600;
    }
    .compare-table td i.fa-check-circle {
      color: var(--success);
      margin-right: 8px;
    }
    .compare-table td i.fa-times-circle {
      color: #C9CDD4;
      margin-right: 8px;
    }

    /* 板块 10：分级套餐与服务选型 (Pricing) */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      align-items: stretch;
    }
    .pricing-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      padding: 40px 32px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
    }
    .pricing-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }
    .pricing-card.popular {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-md);
    }
    .pricing-header h3 {
      font-size: 1.4rem;
      margin-bottom: 8px;
    }
    .pricing-price {
      font-size: 2.35rem;
      font-weight: 800;
      color: var(--primary);
      margin: 16px 0 8px;
      font-family: Consolas, Monaco, monospace;
    }
    .pricing-price small {
      font-size: 0.9rem;
      color: var(--text-light);
      font-weight: 400;
    }
    .pricing-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .pricing-features {
      list-style: none;
      margin-bottom: 32px;
      flex-grow: 1;
      border-top: 1px solid var(--border);
      padding-top: 24px;
    }
    .pricing-features li {
      margin-bottom: 14px;
      font-size: 0.92rem;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .pricing-features li i {
      color: var(--primary);
      font-size: 0.95rem;
    }

    /* 板块 11：体育云行业资讯与洞见摘要区 (News) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .news-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .news-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .news-card-img {
      height: 200px;
      overflow: hidden;
    }
    .news-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .news-card:hover .news-card-img img {
      transform: scale(1.06);
    }
    .news-card-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-meta {
      display: flex;
      justify-content: space-between;
      font-size: 0.82rem;
      color: var(--text-light);
      margin-bottom: 12px;
    }
    .news-meta span.category {
      color: var(--primary);
      font-weight: 600;
    }
    .news-card-body h3 {
      font-size: 1.15rem;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.45;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .news-card-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
      margin-bottom: 16px;
    }

    /* 板块 12：安全体系与合规保障承诺 (Security) */
    .security-badge-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .security-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px 20px;
      border: 1px solid var(--border);
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .security-icon {
      font-size: 2.2rem;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .security-card h4 {
      font-size: 1.05rem;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .security-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 板块 13：用户口碑评价墙与直达咨询收口行动 (Testimonials & CTA Block) */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      margin-bottom: 64px;
    }
    .testi-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-quote {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
      position: relative;
    }
    .testi-quote i {
      color: rgba(0, 82, 217, 0.2);
      font-size: 1.5rem;
      display: block;
      margin-bottom: 8px;
    }
    .testi-user {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .testi-avatar {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      font-weight: 700;
    }
    .testi-info h5 {
      font-size: 0.98rem;
      color: var(--text-main);
    }
    .testi-info p {
      font-size: 0.82rem;
      color: var(--text-light);
    }

    /* 浮岛式聚合收口行动 CTA */
    .cta-float-island {
      background: linear-gradient(135deg, #0A1224 0%, #162446 100%);
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      color: #ffffff;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--dark-border);
      position: relative;
      overflow: hidden;
    }
    .cta-float-island::before {
      content: "";
      position: absolute;
      top: -100px;
      right: -100px;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(0, 164, 255, 0.2) 0%, transparent 70%);
      pointer-events: none;
    }
    .cta-content-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 48px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .cta-content-grid h2 {
      font-size: 2.1rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 16px;
      line-height: 1.35;
    }
    .cta-content-grid p {
      color: #94A3B8;
      font-size: 1rem;
      line-height: 1.7;
    }
    .cta-form-box {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 24px;
      backdrop-filter: blur(8px);
    }
    .cta-form-box form {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .cta-input {
      width: 100%;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: rgba(255, 255, 255, 0.95);
      font-size: 0.92rem;
      color: var(--text-main);
      outline: none;
    }
    .cta-input:focus {
      border-color: var(--accent);
      background: #ffffff;
    }

    /* 统一页脚 Footer */
    .site-footer {
      background-color: var(--dark);
      color: #94A3B8;
      padding: 80px 0 30px;
      border-top: 1px solid var(--dark-border);
      font-size: 0.92rem;
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 60px;
    }
    .footer-col h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 22px;
      position: relative;
    }
    .footer-col h4::after {
      content: "";
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 24px;
      height: 2px;
      background: var(--primary);
    }
    .footer-col p {
      line-height: 1.7;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links li a:hover {
      color: var(--accent);
      padding-left: 4px;
    }
    .footer-contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }
    .footer-contact-item i {
      color: var(--accent);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.84rem;
      color: #64748B;
    }
    .footer-bottom a {
      color: #64748B;
    }
    .footer-bottom a:hover {
      color: var(--accent);
    }

    /* 移动端响应式断点适配 */
    @media (max-width: 1024px) {
      .service-catalog-grid,
      .security-badge-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hot-products-grid,
      .pricing-grid,
      .news-grid,
      .testimonial-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-content-grid {
        grid-template-columns: 1fr;
        text-align: center;
      }
      .hero-action-area {
        justify-content: center;
      }
      .hero-stats-row {
        justify-content: center;
      }
      .hero-visual-board {
        max-width: 600px;
        margin: 0 auto;
      }
      .footer-top-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu {
        position: fixed;
        top: 72px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 72px);
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 30px 24px;
        gap: 20px;
        transition: 0.3s ease;
        box-shadow: var(--shadow-lg);
        overflow-y: auto;
      }
      .nav-menu.open {
        left: 0;
      }
      .nav-toggle {
        display: block;
      }
      .nav-action {
        display: none;
      }
      .hero-angled h1 {
        font-size: 2.1rem;
      }
      .tech-two-cols,
      .dark-grid,
      .tab-content-panel,
      .user-story-card,
      .user-story-card:nth-child(even),
      .cta-content-grid {
        grid-template-columns: 1fr;
      }
      .metrics-grid-four {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 30px;
      }
      .metric-col {
        border-right: none;
      }
      .hot-products-grid,
      .pricing-grid,
      .news-grid,
      .testimonial-grid,
      .service-catalog-grid,
      .security-badge-grid {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }