/* roulang page: index */
:root {
      --primary: #0066FF;
      --primary-dark: #004ecc;
      --primary-light: #e6f0ff;
      --accent: #10B981;
      --accent-glow: rgba(16, 185, 129, 0.2);
      --dark-base: #0B132B;
      --dark-card: #1C2541;
      --dark-light: #2c3a5e;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --bg-main: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: #E2E8F0;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 10px 25px -3px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 20px 35px -5px rgba(15, 23, 42, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-family: 'Noto Sans SC', 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      color: var(--text-main);
      background-color: var(--bg-main);
    }

    body {
      line-height: 1.65;
      font-size: 15px;
      overflow-x: hidden;
    }

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

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

    button, input, textarea, select {
      font-family: inherit;
      outline: none;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部通知与主导航 */
    .top-bar {
      background: var(--dark-base);
      color: #94A3B8;
      font-size: 13px;
      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-bar-links span {
      margin-right: 20px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .nav-wrapper {
      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(--text-main);
      letter-spacing: -0.5px;
    }
    .brand-logo .logo-icon {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--primary), #0284C7);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 20px;
      box-shadow: 0 4px 10px rgba(0, 102, 255, 0.3);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 32px;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }
    .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;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 4px 14px rgba(0, 102, 255, 0.35);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(0, 102, 255, 0.45);
    }
    .btn-secondary {
      background: #FFFFFF;
      color: var(--text-main);
      border-color: var(--border-color);
    }
    .btn-secondary:hover {
      background: #F1F5F9;
      border-color: #CBD5E1;
      transform: translateY(-2px);
    }
    .btn-accent {
      background: var(--accent);
      color: #fff;
      box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
    }
    .btn-accent:hover {
      background: #059669;
      transform: translateY(-2px);
    }
    .btn-outline-white {
      border: 1px solid rgba(255,255,255,0.3);
      color: #FFFFFF;
      background: rgba(255,255,255,0.05);
    }
    .btn-outline-white:hover {
      background: rgba(255,255,255,0.15);
      border-color: #FFFFFF;
    }

    /* 区域统一 Padding */
    .section-spacing {
      padding: 90px 0;
      position: relative;
    }
    .section-spacing-alt {
      background-color: var(--bg-white);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-dark {
      background-color: var(--dark-base);
      color: #F8FAFC;
    }

    /* 标题统一样式 */
    .section-head {
      margin-bottom: 50px;
    }
    .section-head.center {
      text-align: center;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 12px;
      border-radius: 30px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .section-tag.dark-tag {
      background: rgba(0, 102, 255, 0.2);
      color: #60A5FA;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-subtitle {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-dark .section-subtitle {
      color: #94A3B8;
    }

    /* 01. 首屏 Hero 架构 (蓝图: 直播预告封面 + 开播倒计时 + 提醒订阅) */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(0, 102, 255, 0.1) 0%, rgba(248, 250, 252, 1) 70%),
                  url('/assets/images/bdbaf01d673c0ab0.webp') no-repeat center top / cover;
      padding: 80px 0 100px;
      position: relative;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -1px;
      margin-bottom: 20px;
      color: var(--text-main);
    }
    .hero-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 28px;
    }
    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 34px;
    }
    .badge-chip {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 500;
      color: var(--text-muted);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      box-shadow: var(--shadow-sm);
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 30px;
    }

    /* 首屏直播预告封面卡片 */
    .stream-preview-card {
      background: #FFFFFF;
      border: 1px solid rgba(255,255,255,0.8);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      position: relative;
    }
    .stream-thumb-wrap {
      position: relative;
      height: 230px;
      overflow: hidden;
    }
    .stream-thumb-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .stream-thumb-wrap:hover img {
      transform: scale(1.05);
    }
    .live-status-pill {
      position: absolute;
      top: 16px;
      left: 16px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(8px);
      padding: 6px 12px;
      border-radius: 20px;
      color: #fff;
      font-size: 12px;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 6px;
      border: 1px solid rgba(255,255,255,0.15);
    }
    .live-dot {
      width: 8px;
      height: 8px;
      background: #EF4444;
      border-radius: 50%;
      animation: pulse 1.5s infinite;
    }
    @keyframes pulse {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.2); }
      100% { opacity: 1; transform: scale(1); }
    }
    .stream-content {
      padding: 24px;
    }
    .countdown-box {
      background: #F1F5F9;
      border-radius: var(--radius-md);
      padding: 14px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 8px;
      text-align: center;
      margin-bottom: 20px;
    }
    .countdown-digit {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
      display: block;
    }
    .countdown-label {
      font-size: 11px;
      color: var(--text-light);
      text-transform: uppercase;
    }
    .subscribe-action {
      display: flex;
      gap: 10px;
    }
    .subscribe-action input {
      flex: 1;
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
    }

    /* 02. 业务痛点分析区 (蓝图顺序: 痛点) */
    .painpoint-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .painpoint-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      position: relative;
      transition: var(--transition);
      border-top: 4px solid #EF4444;
    }
    .painpoint-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .painpoint-icon {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: #FEF2F2;
      color: #EF4444;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 18px;
    }
    .painpoint-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .painpoint-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 03. 核心解决方案矩阵 (蓝图顺序: 解决方案) */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .matrix-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      transition: var(--transition);
      position: relative;
      display: flex;
      flex-direction: column;
    }
    .matrix-card:hover {
      transform: translateY(-5px);
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }
    .matrix-icon-box {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 20px;
      transition: var(--transition);
    }
    .matrix-card:hover .matrix-icon-box {
      background: var(--primary);
      color: #fff;
    }
    .matrix-card h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .matrix-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .matrix-feature-list {
      list-style: none;
      border-top: 1px dashed var(--border-color);
      padding-top: 16px;
      margin-top: auto;
    }
    .matrix-feature-list li {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .matrix-feature-list li i {
      color: var(--accent);
      font-size: 12px;
    }

    /* 04. 架构与性能核心数据条 (优势数据) */
    .metrics-bar {
      background: linear-gradient(135deg, var(--dark-base), var(--dark-card));
      border-radius: var(--radius-lg);
      padding: 44px 30px;
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(255,255,255,0.08);
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }
    .metric-item {
      padding: 0 16px;
      border-right: 1px solid rgba(255,255,255,0.1);
    }
    .metric-item:last-child {
      border-right: none;
    }
    .metric-number {
      font-size: 38px;
      font-weight: 800;
      color: #FFFFFF;
      line-height: 1;
      margin-bottom: 10px;
      font-family: 'Plus Jakarta Sans', sans-serif;
    }
    .metric-number span {
      color: var(--accent);
      font-size: 24px;
      margin-left: 2px;
    }
    .metric-label {
      font-size: 14px;
      color: #94A3B8;
      font-weight: 500;
    }

    /* 05. 沉浸式场景演示 (蓝图顺序: 场景演示) */
    .showcase-banner {
      background: var(--dark-card);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid rgba(255,255,255,0.1);
      display: grid;
      grid-template-columns: 1fr 1fr;
    }
    .showcase-info {
      padding: 50px 40px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .showcase-img-wrap {
      position: relative;
      min-height: 380px;
    }
    .showcase-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .terminal-box {
      background: rgba(11, 19, 43, 0.85);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius-sm);
      padding: 16px;
      font-family: monospace;
      font-size: 12px;
      color: #38BDF8;
      margin-top: 24px;
      line-height: 1.6;
    }

    /* 06. 实施落地业务流程 (方案流程) */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }
    .step-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
      transition: var(--transition);
    }
    .step-card:hover {
      border-color: var(--primary);
      transform: translateY(-4px);
    }
    .step-badge {
      width: 32px;
      height: 32px;
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      margin-bottom: 16px;
    }
    .step-card h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 07. 社会认同与客户评价 (蓝图顺序: 社会认同) */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testimonial-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-quote {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: italic;
    }
    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #F1F5F9;
      padding-top: 16px;
    }
    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }
    .user-meta h5 {
      font-size: 14px;
      font-weight: 700;
    }
    .user-meta span {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 08. 行业生态合作墙 (合作伙伴) */
    .partners-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }
    .partner-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 16px;
      text-align: center;
      font-weight: 600;
      color: var(--text-muted);
      font-size: 13px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 64px;
      transition: var(--transition);
    }
    .partner-item:hover {
      border-color: var(--primary);
      color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    /* 09. 行业资讯与技术长尾分析 (蓝图顺序: 资讯) */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .article-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
    }
    .article-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .article-thumb {
      height: 180px;
      overflow: hidden;
    }
    .article-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .article-card:hover .article-thumb img {
      transform: scale(1.05);
    }
    .article-body {
      padding: 24px;
    }
    .article-date {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
      display: block;
    }
    .article-title {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .article-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;;
      margin-bottom: 16px;
    }
    .article-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 10. 套餐方案矩阵与配置对比 (蓝图顺序: 套餐对比) */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: stretch;
    }
    .pricing-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
    }
    .pricing-card.featured {
      border: 2px solid var(--primary);
      box-shadow: 0 12px 30px rgba(0, 102, 255, 0.12);
      transform: scale(1.02);
    }
    .pricing-card.featured .popular-tag {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary);
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 16px;
      border-radius: 20px;
    }
    .plan-name {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .plan-desc {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 20px;
      min-height: 40px;
    }
    .plan-features {
      list-style: none;
      margin-bottom: 28px;
      flex-grow: 1;
    }
    .plan-features li {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .plan-features li i {
      color: var(--accent);
      font-size: 14px;
    }

    /* 11. 安全合规与全天候保障条 (蓝图顺序: 保障条) */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .guarantee-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      transition: var(--transition);
    }
    .guarantee-card:hover {
      box-shadow: var(--shadow-sm);
      border-color: var(--accent);
    }
    .guarantee-icon {
      width: 50px;
      height: 50px;
      margin: 0 auto 16px;
      background: rgba(16, 185, 129, 0.1);
      color: var(--accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
    }
    .guarantee-card h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .guarantee-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 12. 交互式常见问题 (FAQ Accordion) */
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-question {
      width: 100%;
      padding: 20px 24px;
      text-align: left;
      background: none;
      border: none;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-question i {
      color: var(--text-light);
      transition: transform 0.3s ease;
    }
    .faq-item.active .faq-question i {
      transform: rotate(180deg);
      color: var(--primary);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: #F8FAFC;
    }
    .faq-answer-inner {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 13. 转化收口表单区 (蓝图顺序: 转化表单) */
    .cta-container {
      background: linear-gradient(135deg, var(--dark-base), #1E293B);
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      color: #FFFFFF;
      box-shadow: var(--shadow-lg);
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .cta-form {
      background: rgba(255, 255, 255, 0.05);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 30px;
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      margin-bottom: 6px;
      color: #CBD5E1;
    }
    .form-input {
      width: 100%;
      padding: 12px 14px;
      background: rgba(15, 23, 42, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-sm);
      color: #FFFFFF;
      font-size: 14px;
    }
    .form-input:focus {
      border-color: var(--primary);
    }

    /* 页脚统一样式 */
    .site-footer {
      background: #070D1E;
      color: #94A3B8;
      padding: 70px 0 30px;
      font-size: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-logo {
      color: #FFFFFF;
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-about {
      line-height: 1.7;
      font-size: 13px;
      color: #64748B;
      margin-bottom: 20px;
    }
    .footer-title {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-contact li {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
      font-size: 13px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: #475569;
    }

    /* 响应式样式 */
    @media (max-width: 1024px) {
      .hero-grid, .cta-container, .showcase-banner {
        grid-template-columns: 1fr;
      }
      .matrix-grid, .painpoint-grid, .pricing-grid, .article-grid, .testimonial-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .partners-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .flow-steps {
        grid-template-columns: repeat(3, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar { display: none; }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-menu.active { display: flex; }
      .mobile-menu-btn { display: block; }
      .metrics-grid, .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .matrix-grid, .painpoint-grid, .pricing-grid, .article-grid, .testimonial-grid, .flow-steps {
        grid-template-columns: 1fr;
      }
      .metric-item {
        border-right: none;
        margin-bottom: 16px;
      }
      .hero-h1 { font-size: 30px; }
      .section-title { font-size: 24px; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }