/* roulang page: index */
:root {
      --primary-dark: #0A0F1D;
      --secondary-dark: #121829;
      --deep-panel: #060913;
      --accent-cyan: #00E5FF;
      --accent-cyan-hover: #33EBFF;
      --accent-orange: #FF6B35;
      --neutral-bg: #F4F7F6;
      --card-white: #FFFFFF;
      --text-main: #111827;
      --text-body: #4B5563;
      --text-muted: #9CA3AF;
      --border-light: #E5E7EB;
      --border-dark: #1F293D;
      --font-stack: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.06);
      --shadow-hover: 0 16px 32px -8px rgba(0, 229, 255, 0.18);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      font-family: var(--font-stack);
      background-color: var(--neutral-bg);
      color: var(--text-body);
      line-height: 1.65;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
    }

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

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: 14px;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
    }

    .top-bar {
      background: var(--primary-dark);
      color: var(--text-muted);
      font-size: 12px;
      padding: 6px 0;
      border-bottom: 1px solid var(--border-dark);
    }

    .top-bar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--accent-cyan);
    }

    .status-dot {
      width: 7px;
      height: 7px;
      background: var(--accent-cyan);
      border-radius: 50%;
      box-shadow: 0 0 6px var(--accent-cyan);
    }

    .nav-main {
      padding: 14px 0;
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
    }

    .brand-mark {
      background: var(--primary-dark);
      color: var(--accent-cyan);
      padding: 4px 8px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 800;
      border: 1px solid var(--border-dark);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }

    .nav-links a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-main);
      padding: 6px 0;
      position: relative;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary-dark);
    }

    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent-cyan);
    }

    .btn-header {
      background: var(--accent-orange);
      color: #fff;
      padding: 9px 18px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 13px;
      border: none;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .btn-header:hover {
      background: #e65825;
      transform: translateY(-1px);
    }

    /* 板块通用架构 */
    .section-wrap {
      padding: 80px 0;
    }

    .section-dark {
      background: var(--primary-dark);
      color: #fff;
    }

    .section-white {
      background: var(--card-white);
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 52px;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 12px;
      background: rgba(0, 229, 255, 0.1);
      color: #008fa0;
      border-radius: var(--radius-sm);
      font-size: 12px;
      font-weight: 700;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-dark .section-badge {
      background: rgba(0, 229, 255, 0.15);
      color: var(--accent-cyan);
    }

    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 14px;
    }

    .section-dark .section-title {
      color: #FFFFFF;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-body);
      line-height: 1.7;
    }

    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* 板块 1: Hero (活动拼团与双CTA) */
    .hero-banner {
      position: relative;
      background: linear-gradient(135deg, rgba(10, 15, 29, 0.94) 0%, rgba(18, 24, 41, 0.88) 100%),
                  url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
      color: #fff;
      padding: 96px 0 90px;
      border-bottom: 2px solid var(--accent-cyan);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-group-deal {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      background: rgba(255, 107, 53, 0.15);
      border: 1px solid var(--accent-orange);
      padding: 6px 14px;
      border-radius: 20px;
      margin-bottom: 22px;
      font-size: 13px;
      color: #FFB088;
    }

    .deal-pulse {
      width: 8px;
      height: 8px;
      background: var(--accent-orange);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent-orange);
    }

    .hero-title {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      color: #fff;
      letter-spacing: -0.5px;
    }

    .hero-title span {
      color: var(--accent-cyan);
    }

    .hero-lead {
      font-size: 16px;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 32px;
    }

    .hero-actions {
      display: flex;
      gap: 16px;
      align-items: center;
      flex-wrap: wrap;
    }

    .btn-primary {
      background: var(--accent-cyan);
      color: var(--primary-dark);
      padding: 13px 28px;
      border-radius: var(--radius-sm);
      font-weight: 700;
      font-size: 14px;
      border: 1px solid var(--accent-cyan);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-primary:hover {
      background: var(--accent-cyan-hover);
      box-shadow: 0 0 16px rgba(0, 229, 255, 0.4);
      transform: translateY(-2px);
    }

    .btn-secondary {
      background: transparent;
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.35);
      padding: 13px 28px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 14px;
      cursor: pointer;
    }

    .btn-secondary:hover {
      border-color: var(--accent-cyan);
      color: var(--accent-cyan);
      background: rgba(0, 229, 255, 0.05);
    }

    .hero-card-panel {
      background: rgba(18, 24, 41, 0.85);
      border: 1px solid var(--border-dark);
      padding: 24px;
      border-radius: var(--radius-md);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    }

    .hero-panel-head {
      display: flex;
      justify-content: space-between;
      border-bottom: 1px solid var(--border-dark);
      padding-bottom: 12px;
      margin-bottom: 16px;
      font-size: 13px;
      color: var(--accent-cyan);
    }

    .hero-panel-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 16px;
    }

    .metric-cell {
      background: rgba(255, 255, 255, 0.03);
      padding: 12px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.05);
    }

    .metric-cell span {
      display: block;
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 4px;
    }

    .metric-cell strong {
      font-size: 18px;
      color: #fff;
    }

    /* 板块 2: 全球化与全国联网覆盖 */
    .coverage-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .coverage-card {
      background: var(--card-white);
      border: 1px solid var(--border-light);
      padding: 24px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
      border-top: 3px solid var(--primary-dark);
    }

    .coverage-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-top-color: var(--accent-cyan);
    }

    .coverage-card h3 {
      font-size: 17px;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .coverage-card p {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 板块 3: 运营痛点 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .pain-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-bottom: 3px solid #EF4444;
      border-radius: var(--radius-sm);
      padding: 24px 20px;
      transition: var(--transition);
    }

    .pain-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }

    .pain-tag {
      font-size: 12px;
      color: #DC2626;
      font-weight: 700;
      margin-bottom: 10px;
      display: inline-block;
    }

    .pain-card h3 {
      font-size: 16px;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .pain-card p {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 板块 4: 解决方案图文交替 */
    .split-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      margin-bottom: 56px;
    }

    .split-row:last-child {
      margin-bottom: 0;
    }

    .split-row.reverse {
      direction: rtl;
    }

    .split-row.reverse .split-content {
      direction: ltr;
    }

    .split-media img {
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      width: 100%;
      height: 320px;
      object-fit: cover;
    }

    .split-content h3 {
      font-size: 24px;
      color: var(--text-main);
      margin-bottom: 16px;
      font-weight: 700;
    }

    .split-content p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 18px;
    }

    .feature-list {
      list-style: none;
      padding: 0;
    }

    .feature-list li {
      font-size: 13px;
      color: var(--text-main);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .feature-list li::before {
      content: "✓";
      color: var(--accent-orange);
      font-weight: 900;
    }

    /* 板块 5: 场景卡 */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .scene-card {
      background: var(--card-white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      transition: var(--transition);
    }

    .scene-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }

    .scene-img {
      height: 180px;
      width: 100%;
      object-fit: cover;
    }

    .scene-body {
      padding: 20px;
    }

    .scene-body h3 {
      font-size: 17px;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .scene-body p {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 板块 6: 资质背书与工业协议标准 */
    .standard-panel {
      background: var(--card-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 32px;
    }

    .standard-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .standard-item {
      padding: 16px;
      background: var(--neutral-bg);
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--primary-dark);
    }

    .standard-item h4 {
      font-size: 15px;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .standard-item p {
      font-size: 12px;
      color: var(--text-body);
      line-height: 1.5;
    }

    /* 板块 7: 核心优势 6 矩阵卡片 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .matrix-card {
      background: var(--card-white);
      border: 1px solid var(--border-light);
      padding: 24px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }

    .matrix-card:hover {
      border-color: var(--accent-cyan);
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .matrix-index {
      font-size: 12px;
      font-weight: 700;
      color: var(--accent-orange);
      margin-bottom: 8px;
    }

    .matrix-card h3 {
      font-size: 17px;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .matrix-card p {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 板块 8: 热门方案阶梯 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: stretch;
    }

    .pricing-card {
      background: var(--card-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .pricing-card.featured {
      border: 2px solid var(--accent-cyan);
      box-shadow: 0 10px 30px rgba(0, 229, 255, 0.15);
    }

    .card-badge-top {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--accent-orange);
      color: #fff;
      font-size: 11px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 12px;
    }

    .pricing-card h3 {
      font-size: 20px;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .pricing-card .pricing-desc {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 20px;
      min-height: 42px;
    }

    .pricing-specs {
      list-style: none;
      margin-bottom: 24px;
      flex-grow: 1;
    }

    .pricing-specs li {
      font-size: 13px;
      color: var(--text-body);
      padding: 6px 0;
      border-bottom: 1px dashed var(--border-light);
    }

    .pricing-btn {
      width: 100%;
      text-align: center;
      padding: 11px 0;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 14px;
      cursor: pointer;
    }

    .pricing-btn-primary {
      background: var(--primary-dark);
      color: var(--accent-cyan);
      border: 1px solid var(--primary-dark);
    }

    .pricing-btn-primary:hover {
      background: var(--accent-cyan);
      color: var(--primary-dark);
    }

    /* 板块 9: 深色数字孪生与物联网架构 */
    .twin-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .twin-box {
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: var(--secondary-dark);
    }

    .twin-box img {
      width: 100%;
      height: 340px;
      object-fit: cover;
      opacity: 0.9;
    }

    .twin-content h3 {
      font-size: 26px;
      color: #fff;
      margin-bottom: 16px;
    }

    .twin-content p {
      font-size: 14px;
      color: #94A3B8;
      line-height: 1.8;
      margin-bottom: 20px;
    }

    .twin-points {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .twin-item {
      background: rgba(255, 255, 255, 0.04);
      padding: 14px;
      border-radius: var(--radius-sm);
      border-left: 2px solid var(--accent-cyan);
    }

    .twin-item strong {
      display: block;
      color: #fff;
      font-size: 14px;
      margin-bottom: 4px;
    }

    .twin-item span {
      font-size: 12px;
      color: #94A3B8;
    }

    /* 板块 10: 成果指标统计 */
    .metric-strip {
      background: var(--secondary-dark);
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
      padding: 40px 0;
    }

    .metric-flex {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }

    .metric-data-title {
      font-size: 38px;
      font-weight: 800;
      color: var(--accent-cyan);
      margin-bottom: 6px;
      font-family: monospace;
    }

    .metric-data-sub {
      font-size: 14px;
      color: #E2E8F0;
      font-weight: 600;
      margin-bottom: 4px;
    }

    .metric-data-text {
      font-size: 12px;
      color: #94A3B8;
    }

    /* 板块 11: 真实客户案例与证言 */
    .case-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 32px;
    }

    .case-main {
      background: var(--card-white);
      border: 1px solid var(--border-light);
      padding: 32px;
      border-radius: var(--radius-md);
    }

    .case-main h3 {
      font-size: 20px;
      color: var(--text-main);
      margin-bottom: 14px;
    }

    .case-main p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 16px;
    }

    .case-sidebar {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .testimonial-bubble {
      background: var(--card-white);
      border: 1px solid var(--border-light);
      padding: 20px;
      border-radius: var(--radius-sm);
    }

    .bubble-quote {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 10px;
      font-style: italic;
    }

    .bubble-author {
      font-size: 12px;
      font-weight: 700;
      color: var(--text-main);
    }

    /* 板块 12: 资讯与运维知识库 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .news-card {
      background: var(--card-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .news-meta {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    .news-card h3 {
      font-size: 16px;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.5;
    }

    .news-card p {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .news-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--accent-orange);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 板块 13: 常见问题手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--card-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-question::after {
      content: '+';
      font-size: 20px;
      color: var(--accent-orange);
      transition: var(--transition);
    }

    .faq-item.active .faq-question::after {
      content: '−';
      transform: rotate(180deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #FAFAFA;
      border-top: 1px solid transparent;
    }

    .faq-item.active .faq-answer {
      max-height: 240px;
      padding: 16px 24px;
      border-top-color: var(--border-light);
    }

    .faq-answer p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
    }

    /* 板块 14: 底部预约演示与转化 */
    .cta-box {
      background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 100%);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 56px 40px;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    }

    .cta-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .cta-content h2 {
      font-size: 30px;
      color: #fff;
      margin-bottom: 16px;
      font-weight: 700;
    }

    .cta-content p {
      font-size: 14px;
      color: #94A3B8;
      line-height: 1.8;
      margin-bottom: 24px;
    }

    .cta-features {
      list-style: none;
    }

    .cta-features li {
      font-size: 13px;
      color: #CBD5E1;
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .cta-features li span {
      color: var(--accent-cyan);
    }

    .cta-form {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 32px;
      border-radius: var(--radius-md);
    }

    .form-group {
      margin-bottom: 16px;
    }

    .form-group label {
      display: block;
      font-size: 13px;
      color: #CBD5E1;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      background: rgba(10, 15, 29, 0.7);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-sm);
      color: #fff;
      outline: none;
      transition: var(--transition);
    }

    .form-control:focus {
      border-color: var(--accent-cyan);
      box-shadow: 0 0 10px rgba(0, 229, 255, 0.2);
    }

    .btn-submit {
      width: 100%;
      background: var(--accent-cyan);
      color: var(--primary-dark);
      border: none;
      padding: 13px;
      border-radius: var(--radius-sm);
      font-weight: 700;
      font-size: 15px;
      cursor: pointer;
      transition: var(--transition);
      margin-top: 10px;
    }

    .btn-submit:hover {
      background: var(--accent-cyan-hover);
      box-shadow: 0 0 16px rgba(0, 229, 255, 0.4);
    }

    .form-tip {
      font-size: 12px;
      color: var(--text-muted);
      text-align: center;
      margin-top: 12px;
    }

    /* 页脚 */
    .site-footer {
      background: var(--deep-panel);
      color: #64748B;
      padding: 64px 0 28px;
      border-top: 1px solid var(--border-dark);
      font-size: 13px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }

    .footer-col h4 {
      font-size: 15px;
      color: #F1F5F9;
      margin-bottom: 18px;
      font-weight: 600;
    }

    .footer-col p {
      line-height: 1.8;
      margin-bottom: 14px;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a:hover {
      color: var(--accent-cyan);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 12px;
    }

    .footer-bottom a {
      color: #64748B;
    }

    .footer-bottom a:hover {
      color: #94A3B8;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid,
      .split-row,
      .twin-layout,
      .case-grid,
      .cta-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .coverage-grid,
      .pain-grid,
      .standard-grid,
      .metric-flex {
        grid-template-columns: repeat(2, 1fr);
      }
      .matrix-grid,
      .scene-grid,
      .pricing-grid,
      .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }
      .top-bar {
        display: none;
      }
      .hero-title {
        font-size: 30px;
      }
      .coverage-grid,
      .pain-grid,
      .standard-grid,
      .matrix-grid,
      .scene-grid,
      .pricing-grid,
      .news-grid,
      .metric-flex {
        grid-template-columns: 1fr;
      }
      .cta-box {
        padding: 32px 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }
    }