/* roulang page: index */
:root {
      --primary: #00D084;
      --primary-hover: #05b875;
      --primary-glow: rgba(0, 208, 132, 0.25);
      --accent: #FF5722;
      --accent-hover: #e64a19;
      --dark: #0B0F17;
      --dark-card: #131A26;
      --dark-border: rgba(255, 255, 255, 0.08);
      --light-bg: #F8FAFC;
      --white: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --border-color: rgba(15, 23, 42, 0.08);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 12px 32px rgba(15, 23, 42, 0.08);
      --shadow-hover: 0 20px 40px rgba(0, 208, 132, 0.16);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

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

    .container {
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .tabular {
      font-variant-numeric: tabular-nums;
      letter-spacing: -0.02em;
    }

    /* 顶部辅助微导航 */
    .top-bar {
      background-color: #070A0F;
      color: var(--text-light);
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-status {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--primary);
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0% { transform: scale(0.95); opacity: 0.8; }
      50% { transform: scale(1.3); opacity: 1; }
      100% { transform: scale(0.95); opacity: 0.8; }
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      font-size: 20px;
      color: var(--text-main);
      letter-spacing: -0.02em;
    }
    .brand-icon-box {
      width: 40px;
      height: 40px;
      background: var(--dark);
      color: var(--primary);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }
    .nav-menu {
      display: flex;
      list-style: none;
      align-items: center;
      gap: 32px;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-muted);
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--text-main);
    }
    .nav-link::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: var(--transition);
    }
    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: none;
      font-size: 22px;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 按钮通用组件 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 13px 26px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      white-space: nowrap;
    }
    .btn-primary {
      background: var(--primary);
      color: #052618;
      box-shadow: 0 4px 14px var(--primary-glow);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px var(--primary-glow);
    }
    .btn-accent {
      background: var(--accent);
      color: var(--white);
    }
    .btn-accent:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(255, 87, 34, 0.3);
    }
    .btn-outline-white {
      background: rgba(255, 255, 255, 0.1);
      color: var(--white);
      border: 1px solid rgba(255, 255, 255, 0.25);
      backdrop-filter: blur(8px);
    }
    .btn-outline-white:hover {
      background: rgba(255, 255, 255, 0.2);
      border-color: var(--white);
      transform: translateY(-2px);
    }
    .btn-secondary {
      background: var(--white);
      color: var(--text-main);
      border: 1px solid var(--border-color);
    }
    .btn-secondary:hover {
      background: #f1f5f9;
      transform: translateY(-2px);
    }

    /* Section 通用排版 */
    .section {
      padding: 96px 0;
      position: relative;
    }
    .section-light {
      background: var(--white);
    }
    .section-alt {
      background: var(--light-bg);
    }
    .section-dark {
      background: var(--dark);
      color: var(--white);
    }
    .section-header {
      margin-bottom: 56px;
      max-width: 760px;
    }
    .section-header.text-center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      background: rgba(0, 208, 132, 0.12);
      color: #008753;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      margin-bottom: 16px;
    }
    .section-dark .badge {
      background: rgba(0, 208, 132, 0.18);
      color: var(--primary);
      border: 1px solid rgba(0, 208, 132, 0.3);
    }
    .section-title {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.28;
      letter-spacing: -0.02em;
      margin-bottom: 18px;
    }
    .section-dark .section-title {
      color: var(--white);
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.75;
    }
    .section-dark .section-desc {
      color: var(--text-light);
    }

    /* 1. Hero 视频官网沉浸首屏 */
    .hero-section {
      position: relative;
      background: #05080E;
      color: var(--white);
      min-height: 86vh;
      display: flex;
      align-items: center;
      padding: 100px 0 80px;
      overflow: hidden;
    }
    .hero-bg-media {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.32;
      filter: saturate(1.2);
    }
    .hero-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: linear-gradient(180deg, rgba(11, 15, 23, 0.6) 0%, rgba(11, 15, 23, 0.95) 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 860px;
    }
    .hero-title {
      font-size: 48px;
      font-weight: 800;
      line-height: 1.18;
      letter-spacing: -0.03em;
      margin-bottom: 24px;
      color: var(--white);
    }
    .hero-title span {
      background: linear-gradient(90deg, #FFFFFF, var(--primary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 18px;
      color: #CBD5E1;
      margin-bottom: 36px;
      line-height: 1.8;
      max-width: 800px;
    }
    .hero-btns {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 18px;
      margin-bottom: 48px;
    }
    .hero-ticker {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 20px;
      padding-top: 28px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
    }
    .hero-ticker-item {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .hero-ticker-val {
      font-size: 26px;
      font-weight: 800;
      color: var(--primary);
    }
    .hero-ticker-lbl {
      font-size: 13px;
      color: var(--text-light);
    }

    /* 2. 客户案例板块 (叙事流: 客户案例) */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .case-card {
      background: var(--white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .case-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: rgba(0, 208, 132, 0.4);
    }
    .case-img-wrap {
      position: relative;
      height: 220px;
      overflow: hidden;
      background: #000;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.6s ease;
    }
    .case-card:hover .case-img-wrap img {
      transform: scale(1.06);
    }
    .case-tag {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(11, 15, 23, 0.85);
      backdrop-filter: blur(6px);
      color: var(--primary);
      padding: 4px 12px;
      border-radius: 4px;
      font-size: 12px;
      font-weight: 700;
    }
    .case-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .case-body h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .case-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex: 1;
    }
    .case-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-top: 14px;
      border-top: 1px solid var(--border-color);
      font-size: 13px;
      color: var(--text-light);
    }

    /* 3. 结果数据条 (全宽等宽数字条) */
    .metric-strip {
      background: #0A0E17;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      padding: 64px 0;
    }
    .metric-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .metric-item {
      padding: 12px;
      border-right: 1px solid rgba(255, 255, 255, 0.08);
    }
    .metric-item:last-child {
      border-right: none;
    }
    .metric-num {
      font-size: 52px;
      font-weight: 900;
      color: var(--white);
      line-height: 1.1;
      margin-bottom: 8px;
    }
    .metric-num span {
      color: var(--primary);
      font-size: 32px;
      margin-left: 2px;
    }
    .metric-title {
      font-size: 16px;
      font-weight: 700;
      color: #E2E8F0;
      margin-bottom: 6px;
    }
    .metric-sub {
      font-size: 13px;
      color: var(--text-light);
      line-height: 1.5;
    }

    /* 4. 前后对比板块 (传统办赛 vs 系统赋能) */
    .comparison-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .compare-card {
      border-radius: var(--radius-md);
      padding: 36px;
      position: relative;
    }
    .compare-card.traditional {
      background: #FFF5F5;
      border: 1px solid #FED7D7;
    }
    .compare-card.smart {
      background: #F0FDF4;
      border: 1px solid #BBF7D0;
    }
    .compare-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 24px;
      padding-bottom: 16px;
      border-bottom: 1px dashed rgba(0, 0, 0, 0.1);
    }
    .compare-head h3 {
      font-size: 20px;
      font-weight: 800;
    }
    .traditional .compare-head h3 { color: #C53030; }
    .smart .compare-head h3 { color: #15803D; }
    .compare-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .compare-list li {
      display: flex;
      gap: 12px;
      font-size: 15px;
      line-height: 1.6;
    }
    .traditional .compare-list li i {
      color: #E53E3E;
      margin-top: 4px;
    }
    .smart .compare-list li i {
      color: #16A34A;
      margin-top: 4px;
    }

    /* 5. 核心技术能力网格 (Section 5 解决方案与方法步骤) */
    .tech-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .tech-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .tech-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 0;
      background: var(--primary);
      transition: var(--transition);
    }
    .tech-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(0, 208, 132, 0.3);
    }
    .tech-card:hover::before {
      height: 100%;
    }
    .tech-icon {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: rgba(0, 208, 132, 0.1);
      color: #00A86B;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 22px;
    }
    .tech-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .tech-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 6. 方法步骤 (时间线/赛程阶段闭环) */
    .steps-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-item {
      background: var(--dark-card);
      border: 1px solid var(--dark-border);
      border-radius: var(--radius-md);
      padding: 28px;
      position: relative;
    }
    .step-badge {
      font-size: 12px;
      font-weight: 800;
      color: var(--primary);
      background: rgba(0, 208, 132, 0.15);
      display: inline-block;
      padding: 3px 10px;
      border-radius: 4px;
      margin-bottom: 16px;
    }
    .step-item h3 {
      font-size: 18px;
      color: var(--white);
      margin-bottom: 12px;
    }
    .step-item p {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.65;
    }

    /* 7. 旗舰产品与模块矩阵 (3列横向产品卡) */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .product-card {
      background: var(--white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 36px 30px;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
    }
    .product-card.featured {
      border: 2px solid var(--primary);
      box-shadow: 0 16px 36px var(--primary-glow);
    }
    .featured-ribbon {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--primary);
      color: #063622;
      font-size: 12px;
      font-weight: 800;
      padding: 4px 14px;
      border-radius: 20px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    }
    .product-card h3 {
      font-size: 21px;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .product-desc {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.6;
    }
    .product-specs {
      list-style: none;
      margin-bottom: 32px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      flex: 1;
    }
    .product-specs li {
      font-size: 14px;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .product-specs li i {
      color: var(--primary);
      font-size: 14px;
    }

    /* 8. 赛事总监与运营团队故事 (社会认同/故事区) */
    .story-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .story-img-container {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
    }
    .story-img-container img {
      width: 100%;
      height: 480px;
      object-fit: cover;
    }
    .story-quote-card {
      position: absolute;
      bottom: 24px;
      left: 24px;
      right: 24px;
      background: rgba(11, 15, 23, 0.88);
      backdrop-filter: blur(12px);
      padding: 20px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255,255,255,0.1);
      color: var(--white);
    }
    .story-quote-card p {
      font-size: 14px;
      font-style: italic;
      color: #E2E8F0;
      line-height: 1.6;
    }
    .story-content h3 {
      font-size: 28px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 20px;
    }
    .story-content p {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .story-person {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .story-person-avatar {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--dark);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
    }

    /* 9. 赛事数字化规程与前沿资讯 (资讯区) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: var(--white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .news-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }
    .news-cover {
      height: 190px;
      overflow: hidden;
      background: #000;
    }
    .news-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .news-card:hover .news-cover img {
      transform: scale: 1.05);
    }
    .news-content {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .news-content h3 {
      font-size: 18px;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 12px;
    }
    .news-content p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      flex: 1;
    }
    .news-link {
      font-size: 14px;
      font-weight: 700;
      color: var(--primary-hover);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 10. 适用场景矩阵 (适用人群) */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .scenario-card {
      background: var(--white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 28px 24px;
      text-align: center;
      transition: var(--transition);
    }
    .scenario-card:hover {
      border-color: var(--primary);
      transform: translateY(-4px);
      box-shadow: var(--shadow-sm);
    }
    .scenario-icon {
      width: 60px;
      height: 60px;
      margin: 0 auto 20px;
      background: #F1F5F9;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      color: var(--text-main);
    }
    .scenario-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .scenario-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 11. 常见异议拆解 (FAQ 手风琴) */
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-question {
      padding: 22px 28px;
      font-size: 17px;
      font-weight: 700;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }
    .faq-icon {
      transition: transform 0.3s ease;
      color: var(--text-light);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      padding: 0 28px;
      background: #FAFCFE;
    }
    .faq-answer-inner {
      padding-bottom: 24px;
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid rgba(15, 23, 42, 0.05);
      padding-top: 16px;
    }
    .faq-item.active {
      border-color: var(--primary);
    }
    .faq-item.active .faq-icon {
      transform: rotate(180deg);
      color: var(--primary);
    }

    /* 12. 底部强力咨询入口 (CTA + 表单) */
    .cta-box {
      background: linear-gradient(135deg, #0B0F17 0%, #161F30 100%);
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      color: var(--white);
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: var(--shadow-md);
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }
    .cta-text h2 {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 18px;
    }
    .cta-text p {
      font-size: 16px;
      color: var(--text-light);
      line-height: 1.7;
      margin-bottom: 28px;
    }
    .cta-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 14px;
      color: #E2E8F0;
    }
    .cta-badges span {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .cta-badges span i {
      color: var(--primary);
    }
    .cta-form {
      background: rgba(255, 255, 255, 0.04);
      padding: 32px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.1);
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group label {
      font-size: 13px;
      font-weight: 600;
      color: #CBD5E1;
    }
    .form-control {
      width: 100%;
      height: 44px;
      padding: 0 14px;
      border-radius: 6px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: var(--white);
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--primary);
      background: rgba(255, 255, 255, 0.12);
    }
    .form-privacy {
      font-size: 12px;
      color: var(--text-light);
      line-height: 1.5;
    }

    /* 页脚设计 */
    .site-footer {
      background: #06090E;
      color: #64748B;
      font-size: 14px;
      padding: 80px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.4fr;
      gap: 48px;
      margin-bottom: 60px;
    }
    .footer-brand h4 {
      color: var(--white);
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-brand p {
      line-height: 1.7;
      color: var(--text-light);
      font-size: 14px;
      margin-bottom: 20px;
    }
    .footer-col h5 {
      color: var(--white);
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      padding-top: 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      font-size: 13px;
    }

    /* 移动端菜单抽屉 */
    .mobile-drawer {
      display: none;
      position: fixed;
      top: 76px;
      left: 0;
      width: 100%;
      background: var(--white);
      border-bottom: 1px solid var(--border-color);
      padding: 24px;
      box-shadow: var(--shadow-md);
      z-index: 999;
    }
    .mobile-drawer.open {
      display: block;
    }
    .mobile-nav-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .mobile-nav-list a {
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .case-grid, .tech-grid, .product-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .metric-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metric-item:nth-child(2) {
        border-right: none;
      }
      .cta-box {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar { display: none; }
      .nav-menu, .nav-actions .btn { display: none; }
      .mobile-menu-btn { display: block; }
      .hero-title { font-size: 34px; }
      .section-title { font-size: 26px; }
      .comparison-container, .story-wrapper {
        grid-template-columns: 1fr;
      }
      .case-grid, .tech-grid, .product-grid, .news-grid, .scenario-grid, .steps-timeline, .metric-grid {
        grid-template-columns: 1fr;
      }
      .metric-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.08); padding-bottom: 24px; }
      .metric-item:last-child { border-bottom: none; }
      .footer-grid { grid-template-columns: 1fr; gap: 36px; }
      .cta-box { padding: 36px 20px; }
    }