/* roulang page: index */
:root {
      --primary: #0F172A;
      --primary-light: #1E293B;
      --accent: #059669;
      --accent-hover: #047857;
      --accent-light: #ECFDF5;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --bg-body: #FFFFFF;
      --bg-alt: #F8FAFC;
      --bg-subtle: #F1F5F9;
      --border-color: #E2E8F0;
      --card-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.04), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --card-shadow-hover: 0 20px 30px -10px rgba(15, 23, 42, 0.08), 0 10px 15px -5px rgba(15, 23, 42, 0.05);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --font-stack: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: var(--font-stack);
      font-size: 16px;
      line-height: 1.7;
      color: var(--text-main);
      background-color: var(--bg-body);
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
    img { max-width: 100%; height: auto; display: block; }
    button, input, select, textarea { font-family: inherit; }

    /* 容器规范 */
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .section-wrap {
      padding: 85px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .section-wrap.bg-alt {
      background-color: var(--bg-alt);
    }
    .section-wrap.bg-dark {
      background-color: var(--primary);
      color: #FFFFFF;
    }

    /* 顶部通栏辅助条 */
    .site-topbar {
      background-color: var(--primary);
      color: #94A3B8;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .topbar-flex {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .topbar-meta { display: flex; align-items: center; gap: 20px; }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #34D399;
      font-weight: 500;
    }
    .status-dot {
      width: 7px;
      height: 7px;
      background-color: #34D399;
      border-radius: 50%;
      box-shadow: 0 0 8px #34D399;
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
      transition: all 0.3s ease;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 20px;
      letter-spacing: -0.5px;
      color: var(--primary);
    }
    .brand-icon-box {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--accent) 0%, #047857 100%);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-weight: 900;
      font-size: 18px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-item a {
      font-weight: 500;
      color: var(--primary-light);
      font-size: 15px;
      padding: 6px 0;
      position: relative;
    }
    .nav-item a:hover,
    .nav-item a.active {
      color: var(--accent);
    }
    .nav-item a.active::after {
      content: "";
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--accent);
      border-radius: 2px;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      border: 1.5px solid transparent;
      transition: all 0.25s ease;
      white-space: nowrap;
    }
    .btn-accent {
      background-color: var(--accent);
      color: #FFFFFF;
      box-shadow: 0 4px 12px rgba(5, 150, 105, 0.25);
    }
    .btn-accent:hover {
      background-color: var(--accent-hover);
      transform: translateY(-1px);
    }
    .btn-outline {
      border-color: var(--border-color);
      color: var(--primary-light);
      background: #FFFFFF;
    }
    .btn-outline:hover {
      border-color: var(--accent);
      color: var(--accent);
      background-color: var(--accent-light);
    }
    .btn-lg {
      padding: 14px 28px;
      font-size: 16px;
      border-radius: var(--radius-md);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--primary);
      cursor: pointer;
    }

    /* 标题排版 */
    .section-head {
      margin-bottom: 48px;
      text-align: center;
    }
    .section-head.text-left {
      text-align: left;
    }
    .section-kicker {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--accent);
      background: var(--accent-light);
      padding: 4px 12px;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
    }
    .section-head.bg-dark .section-kicker {
      background: rgba(16, 185, 129, 0.15);
      color: #34D399;
    }
    .section-head h2 {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      color: var(--primary);
      margin-bottom: 14px;
    }
    .section-wrap.bg-dark .section-head h2 {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
      line-height: 1.7;
    }
    .section-head.text-left .section-desc {
      margin-left: 0;
    }
    .section-wrap.bg-dark .section-desc {
      color: var(--text-light);
    }

    /* 板块 1: Hero 首屏 */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.08) 0%, rgba(255, 255, 255, 0) 70%), linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
      padding: 70px 0 80px 0;
      position: relative;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }
    .hero-badge-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ECFDF5;
      color: #065F46;
      border: 1px solid #A7F3D0;
      padding: 5px 14px;
      border-radius: var(--radius-full);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 18px;
    }
    .hero-content h1 {
      font-size: 44px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 18px;
      letter-spacing: -0.8px;
    }
    .hero-content h1 span {
      color: var(--accent);
      position: relative;
    }
    .hero-summary {
      font-size: 16px;
      color: #475569;
      line-height: 1.75;
      margin-bottom: 28px;
      max-width: 580px;
    }
    .hero-actions {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
      margin-bottom: 34px;
    }
    .hero-trust-bar {
      display: flex;
      gap: 22px;
      align-items: center;
      padding-top: 24px;
      border-top: 1px dashed var(--border-color);
      flex-wrap: wrap;
    }
    .trust-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }
    .trust-item svg {
      width: 16px;
      height: 16px;
      fill: var(--accent);
      flex-shrink: 0;
    }
    .hero-stage {
      position: relative;
    }
    .hero-img-card {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.18);
      border: 1px solid rgba(226, 232, 240, 0.8);
      position: relative;
    }
    .hero-floating-stat {
      position: absolute;
      bottom: -20px;
      left: -20px;
      background: #FFFFFF;
      padding: 16px 20px;
      border-radius: var(--radius-md);
      box-shadow: var(--card-shadow-hover);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .stat-circle {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--accent-light);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 18px;
    }
    .stat-text .stat-num {
      font-size: 18px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
    }
    .stat-text .stat-lbl {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 2: 卖点三连 (版式主干) */
    .trio-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .trio-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      box-shadow: var(--card-shadow);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      position: relative;
      overflow: hidden;
    }
    .trio-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--card-shadow-hover);
      border-color: #CBD5E1;
    }
    .trio-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--accent), #34D399);
      opacity: 0;
      transition: opacity 0.3s ease;
    }
    .trio-card:hover::before {
      opacity: 1;
    }
    .trio-icon {
      width: 52px;
      height: 52px;
      background: var(--accent-light);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      margin-bottom: 22px;
      font-size: 22px;
      font-weight: 700;
    }
    .trio-card h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .trio-card p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 3: 入口矩阵与核心六大引擎 */
    .engine-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .engine-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .engine-card:hover {
      border-color: var(--accent);
      box-shadow: 0 12px 24px -6px rgba(5, 150, 105, 0.1);
      transform: translateY(-3px);
    }
    .engine-badge {
      display: inline-block;
      font-size: 11px;
      font-weight: 700;
      color: var(--accent);
      background: var(--accent-light);
      padding: 2px 8px;
      border-radius: 4px;
      margin-bottom: 14px;
      align-self: flex-start;
    }
    .engine-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .engine-card p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 18px;
      line-height: 1.65;
    }
    .engine-list {
      list-style: none;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
      margin-bottom: 16px;
    }
    .engine-list li {
      font-size: 13px;
      color: #475569;
      display: flex;
      align-items: center;
      gap: 6px;
      margin-bottom: 6px;
    }
    .engine-list li::before {
      content: "•";
      color: var(--accent);
      font-weight: bold;
    }
    .module-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--accent);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .module-link:hover {
      text-decoration: underline;
    }

    /* 板块 4: 最新发布与多终端演示 (左文右图) */
    .product-stage-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .stage-content h3 {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 16px;
      line-height: 1.35;
    }
    .stage-desc {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 22px;
      line-height: 1.7;
    }
    .stage-params-box {
      background: var(--bg-alt);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 18px 20px;
      margin-bottom: 26px;
    }
    .param-row {
      display: flex;
      justify-content: space-between;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px dashed #E2E8F0;
    }
    .param-row:last-child { border-bottom: none; }
    .param-name { color: var(--text-muted); }
    .param-val { color: var(--primary); font-weight: 600; }
    .stage-img-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      border: 1px solid var(--border-color);
    }

    /* 板块 5: 热门专题 - 专属运动场景流 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }
    .scenario-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }
    .scenario-card img {
      width: 100%;
      height: 160px;
      object-fit: cover;
    }
    .scenario-body {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .scenario-body h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .scenario-body p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
      flex-grow: 1;
    }
    .scenario-tag {
      font-size: 11px;
      background: #F1F5F9;
      color: #475569;
      padding: 3px 8px;
      border-radius: 4px;
      align-self: flex-start;
    }

    /* 板块 6: 资讯列表与运营知识库 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }
    .news-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
    }
    .news-body {
      padding: 22px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 10px;
    }
    .news-tag {
      color: var(--accent);
      font-weight: 600;
    }
    .news-body h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .news-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    /* 板块 7: 数据指标统计条 */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-card {
      background: #FFFFFF;
      padding: 32px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
    }
    .metric-val {
      font-size: 38px;
      font-weight: 900;
      color: var(--accent);
      line-height: 1.1;
      margin-bottom: 8px;
      font-variant-numeric: tabular-nums;
    }
    .metric-lbl {
      font-size: 15px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 8: 口碑与数字化实证案例 */
    .proof-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .proof-card-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--card-shadow);
      position: relative;
    }
    .proof-quote-icon {
      font-size: 40px;
      color: var(--accent);
      opacity: 0.2;
      line-height: 1;
      margin-bottom: 12px;
    }
    .proof-quote {
      font-size: 16px;
      color: var(--primary-light);
      line-height: 1.8;
      margin-bottom: 24px;
      font-style: italic;
    }
    .proof-author {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .author-avatar {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: var(--bg-subtle);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--accent);
      border: 2px solid #E2E8F0;
    }
    .author-name {
      font-size: 15px;
      font-weight: 700;
      color: var(--primary);
    }
    .author-role {
      font-size: 12px;
      color: var(--text-muted);
    }
    .proof-stats-stack {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .stat-bar-card {
      background: #FFFFFF;
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
    }
    .bar-head {
      display: flex;
      justify-content: space-between;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .bar-bg {
      height: 8px;
      background: #F1F5F9;
      border-radius: 4px;
      overflow: hidden;
    }
    .bar-fill {
      height: 100%;
      background: linear-gradient(90deg, var(--accent), #34D399);
      border-radius: 4px;
    }

    /* 板块 9: 俱乐部全生命周期业务服务流程 */
    .flow-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
position: relative;
    }
    .flow-step-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      box-shadow: var(--card-shadow);
      position: relative;
    }
    .flow-num {
      width: 38px;
      height: 38px;
      background: var(--accent-light);
      color: var(--accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 16px;
      margin-bottom: 16px;
      border: 1px solid rgba(5, 150, 105, 0.2);
    }
    .flow-step-card h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .flow-step-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 10: 架构与技术底层区 (深色对比) */
    .arch-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 44px;
      align-items: center;
    }
    .arch-feature-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .arch-item {
      display: flex;
      gap: 16px;
    }
    .arch-icon {
      width: 44px;
      height: 44px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #34D399;
      font-weight: 700;
      flex-shrink: 0;
    }
    .arch-text h4 {
      font-size: 17px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 6px;
    }
    .arch-text p {
      font-size: 13px;
      color: var(--text-light);
      line-height: 1.6;
    }
    .arch-mock-box {
      background: #1E293B;
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
    }
    .arch-mock-bar {
      display: flex;
      gap: 6px;
      margin-bottom: 16px;
    }
    .mock-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .mock-dot.r { background: #EF4444; }
    .mock-dot.y { background: #F59E0B; }
    .mock-dot.g { background: #10B981; }
    .arch-code-line {
      font-family: monospace;
      font-size: 12px;
      color: #94A3B8;
      padding: 4px 0;
    }
    .arch-code-line span.hl { color: #34D399; }
    .arch-code-line span.kw { color: #38BDF8; }

    /* 板块 11: 业务 FAQ 手风琴 */
    .faq-stack {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      background: #FFFFFF;
      overflow: hidden;
      transition: border-color 0.25s ease;
    }
    .faq-item:hover {
      border-color: #CBD5E1;
    }
    .faq-item summary {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--primary);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      list-style: none;
      user-select: none;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-item summary::after {
      content: "+";
      font-size: 20px;
      font-weight: 400;
      color: var(--text-muted);
      transition: transform 0.2s ease;
    }
    .faq-item[open] summary::after {
      content: "−";
      color: var(--accent);
    }
    .faq-body {
      padding: 0 24px 22px 24px;
      font-size: 14px;
      color: #475569;
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
    }

    /* 板块 12: 联系入口与底部转化 */
    .cta-banner {
      background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
      border-radius: var(--radius-lg);
      padding: 50px 48px;
      color: #FFFFFF;
      box-shadow: var(--card-shadow);
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .cta-txt h3 {
      font-size: 30px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 14px;
    }
    .cta-txt p {
      font-size: 15px;
      color: #94A3B8;
      margin-bottom: 24px;
      line-height: 1.7;
    }
    .cta-perks {
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 13px;
      color: #CBD5E1;
    }
    .cta-perks span {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .cta-perks span::before {
      content: "✓";
      color: #34D399;
      font-weight: 800;
    }
    .cta-form-card {
      background: #FFFFFF;
      padding: 30px;
      border-radius: var(--radius-md);
      color: var(--primary);
    }
    .cta-form-card h4 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 16px;
      text-align: center;
    }
    .form-group {
      margin-bottom: 14px;
    }
    .form-input {
      width: 100%;
      height: 44px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 0 14px;
      font-size: 14px;
      color: var(--primary);
      outline: none;
      transition: border-color 0.2s ease;
    }
    .form-input:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.15);
    }
    .form-submit-btn {
      width: 100%;
      height: 44px;
      background: var(--accent);
      color: #FFFFFF;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      transition: background 0.2s ease;
      margin-top: 6px;
    }
    .form-submit-btn:hover {
      background: var(--accent-hover);
    }
    .form-tip {
      font-size: 11px;
      color: var(--text-light);
      text-align: center;
      margin-top: 10px;
    }

    /* 统一页脚 */
    .site-footer {
      background: #0B1120;
      color: #94A3B8;
      padding: 60px 0 28px 0;
      font-size: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .footer-logo-title {
      font-size: 18px;
      font-weight: 800;
      color: #FFFFFF;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-desc {
      font-size: 13px;
      color: #64748B;
      line-height: 1.7;
    }
    .footer-col h5 {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
      letter-spacing: 0.5px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      color: #94A3B8;
      font-size: 13px;
    }
    .footer-links a:hover {
      color: #34D399;
    }
    .footer-contact p {
      font-size: 13px;
      color: #94A3B8;
      margin-bottom: 8px;
      line-height: 1.6;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
      font-size: 12px;
      color: #64748B;
    }
    .copyright-info a {
      color: #64748B;
      margin-left: 8px;
    }
    .copyright-info a:hover {
      color: #94A3B8;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; gap: 36px; }
      .product-stage-grid { grid-template-columns: 1fr; }
      .scenario-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .cta-banner { grid-template-columns: 1fr; padding: 36px 28px; }
    }
    @media (max-width: 768px) {
      .menu-toggle { display: block; }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        border-top: 1px solid var(--border-color);
        gap: 16px;
      }
      .nav-menu.is-active { display: flex; }
      .nav-actions { display: none; }
      .hero-content h1 { font-size: 32px; }
      .section-head h2 { font-size: 26px; }
      .trio-grid { grid-template-columns: 1fr; }
      .engine-grid { grid-template-columns: 1fr; }
      .metrics-grid { grid-template-columns: repeat(2, 1fr); }
      .news-grid { grid-template-columns: 1fr; }
      .proof-grid { grid-template-columns: 1fr; }
      .flow-steps-grid { grid-template-columns: 1fr; }
      .arch-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .section-wrap { padding: 56px 0; }
    }
    @media (max-width: 520px) {
      .metrics-grid { grid-template-columns: 1fr; }
      .scenario-grid { grid-template-columns: 1fr; }
      .hero-actions { flex-direction: column; width: 100%; }
      .hero-actions .btn { width: 100%; }
    }

/* roulang page: category1 */
:root {
        --primary: #0F172A;
        --primary-light: #1E293B;
        --accent: #059669;
        --accent-hover: #047857;
        --accent-light: #ECFDF5;
        --text-main: #0F172A;
        --text-muted: #64748B;
        --text-light: #94A3B8;
        --bg-body: #FFFFFF;
        --bg-alt: #F8FAFC;
        --bg-subtle: #F1F5F9;
        --border-color: #E2E8F0;
        --card-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.04), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
        --card-shadow-hover: 0 20px 30px -10px rgba(15, 23, 42, 0.08), 0 10px 15px -5px rgba(15, 23, 42, 0.05);
        --radius-sm: 6px;
        --radius-md: 10px;
        --radius-lg: 16px;
        --radius-full: 9999px;
        --font-stack: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
        font-family: var(--font-stack);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text-main);
        background-color: var(--bg-body);
        -webkit-font-smoothing: antialiased;
        overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
    img { max-width: 100%; height: auto; display: block; }
    button, input, select, textarea { font-family: inherit; }
    .container {
        width: 100%;
        max-width: 1240px;
        margin-left: auto;
        margin-right: auto;
        padding-left: 20px;
        padding-right: 20px;
    }
    .section-wrap {
        padding: 80px 0;
        border-bottom: 1px solid var(--border-color);
    }
    .section-wrap.bg-alt { background-color: var(--bg-alt); }
    .section-wrap.bg-dark { background-color: var(--primary); color: #FFFFFF; }
    
    /* 顶部辅助条 */
    .site-topbar {
        background-color: var(--primary);
        color: #94A3B8;
        font-size: 13px;
        padding: 8px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .topbar-flex {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
    }
    .topbar-meta { display: flex; align-items: center; gap: 20px; }
    .status-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        color: #34D399;
        font-weight: 500;
    }
    .status-badge::before {
        content: "";
        display: inline-block;
        width: 8px;
        height: 8px;
        background-color: #34D399;
        border-radius: 50%;
        box-shadow: 0 0 8px #34D399;
    }

    /* 主导航 */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
        transition: all 0.3s ease;
    }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 72px;
    }
    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: 800;
        font-size: 20px;
        letter-spacing: -0.5px;
        color: var(--primary);
    }
    .brand-icon-box {
        width: 36px;
        height: 36px;
        background: linear-gradient(135deg, var(--accent) 0%, #047857 100%);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #FFFFFF;
        font-weight: 900;
        font-size: 18px;
    }
    .nav-menu {
        display: flex;
        align-items: center;
        list-style: none;
        gap: 28px;
    }
    .nav-item a {
        font-weight: 500;
        color: var(--primary-light);
        font-size: 15px;
        padding: 6px 0;
        position: relative;
    }
    .nav-item a:hover,
    .nav-item a.active {
        color: var(--accent);
    }
    .nav-item a.active::after {
        content: "";
        position: absolute;
        bottom: -4px;
        left: 0;
        width: 100%;
        height: 2px;
        background-color: var(--accent);
        border-radius: 2px;
    }
    .nav-actions { display: flex; align-items: center; gap: 14px; }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 10px 22px;
        font-size: 14px;
        font-weight: 600;
        border-radius: var(--radius-md);
        cursor: pointer;
        border: 1.5px solid transparent;
        transition: all 0.25s ease;
        white-space: nowrap;
    }
    .btn-accent {
        background-color: var(--accent);
        color: #FFFFFF;
        box-shadow: 0 4px 12px rgba(5, 150, 105, 0.25);
    }
    .btn-accent:hover {
        background-color: var(--accent-hover);
        transform: translateY(-1px);
    }
    .btn-outline {
        border-color: var(--border-color);
        color: var(--primary-light);
        background: #FFFFFF;
    }
    .btn-outline:hover {
        border-color: var(--accent);
        color: var(--accent);
        background-color: var(--accent-light);
    }
    .menu-toggle {
        display: none;
        background: none;
        border: none;
        font-size: 24px;
        color: var(--primary);
        cursor: pointer;
    }

    /* 分类页 H1 导视头图区 (蓝图变体：资源检索与紧凑头图) */
    .category-hero {
        position: relative;
        background: radial-gradient(circle at 90% 10%, rgba(5, 150, 105, 0.12) 0%, rgba(15, 23, 42, 0) 60%), #0F172A;
        color: #FFFFFF;
        padding: 56px 0 64px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        overflow: hidden;
    }
    .category-hero-bg {
        position: absolute;
        inset: 0;
        opacity: 0.15;
        background-image: url('/assets/images/48fab026aadfe77e.png');
        background-size: cover;
        background-position: center;
        pointer-events: none;
    }
    .breadcrumb-nav {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-light);
        margin-bottom: 18px;
    }
    .breadcrumb-nav a:hover { color: #34D399; }
    .breadcrumb-sep { opacity: 0.5; }
    .category-hero-content {
        max-width: 860px;
        margin: 0 auto;
        text-align: center;
        position: relative;
        z-index: 2;
    }
    .category-badge-label {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(16, 185, 129, 0.16);
        color: #34D399;
        font-size: 12px;
        font-weight: 700;
        padding: 4px 14px;
        border-radius: var(--radius-full);
        margin-bottom: 16px;
        border: 1px solid rgba(52, 211, 153, 0.25);
    }
    .category-hero h1 {
        font-size: 36px;
        font-weight: 800;
        line-height: 1.3;
        letter-spacing: -0.5px;
        margin-bottom: 16px;
    }
    .category-hero-desc {
        font-size: 16px;
        color: #CBD5E1;
        line-height: 1.75;
        margin-bottom: 28px;
    }
    .search-filter-box {
        display: flex;
        align-items: center;
        max-width: 620px;
        margin: 0 auto;
        background: #FFFFFF;
        border-radius: var(--radius-md);
        padding: 6px;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
    }
    .search-filter-box input {
        flex: 1;
        border: none;
        outline: none;
        padding: 10px 16px;
        font-size: 15px;
        color: var(--primary);
    }
    .search-filter-box button {
        background-color: var(--accent);
        color: #FFFFFF;
        border: none;
        padding: 10px 24px;
        border-radius: var(--radius-sm);
        font-weight: 600;
        cursor: pointer;
        transition: background-color 0.2s;
    }
    .search-filter-box button:hover { background-color: var(--accent-hover); }
    .quick-tags {
        display: flex;
        justify-content: center;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
        margin-top: 18px;
        font-size: 13px;
        color: #94A3B8;
    }
    .quick-tag-item {
        color: #CBD5E1;
        background: rgba(255, 255, 255, 0.08);
        padding: 3px 10px;
        border-radius: 4px;
        transition: background 0.2s;
    }
    .quick-tag-item:hover { background: rgba(16, 185, 129, 0.3); color: #FFFFFF; }

    /* 板块 2: 多条件筛选矩阵 */
    .filter-matrix-wrap {
        background: #FFFFFF;
        border-radius: var(--radius-lg);
        padding: 24px 30px;
        border: 1px solid var(--border-color);
        box-shadow: var(--card-shadow);
        margin-top: -30px;
        position: relative;
        z-index: 5;
    }
    .filter-row {
        display: flex;
        align-items: flex-start;
        padding: 12px 0;
        border-bottom: 1px dashed #E2E8F0;
    }
    .filter-row:last-child { border-bottom: none; }
    .filter-label {
        width: 110px;
        font-size: 14px;
        font-weight: 700;
        color: var(--text-muted);
        padding-top: 4px;
        flex-shrink: 0;
    }
    .filter-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        flex: 1;
    }
    .filter-btn {
        background: transparent;
        border: 1px solid transparent;
        padding: 4px 14px;
        font-size: 13px;
        font-weight: 500;
        border-radius: var(--radius-full);
        color: var(--text-main);
        cursor: pointer;
        transition: all 0.2s ease;
    }
    .filter-btn:hover {
        background-color: var(--bg-subtle);
        color: var(--accent);
    }
    .filter-btn.active {
        background-color: var(--accent);
        color: #FFFFFF;
        font-weight: 600;
    }

    /* 板块 3: 模块与解决方案主体列表 (6-8个深度模块卡片) */
    .module-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
        margin-top: 40px;
    }
    .module-card {
        background: #FFFFFF;
        border-radius: var(--radius-lg);
        border: 1px solid var(--border-color);
        box-shadow: var(--card-shadow);
        overflow: hidden;
        display: flex;
        flex-direction: column;
        transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .module-card:hover {
        transform: translateY(-5px);
        box-shadow: var(--card-shadow-hover);
        border-color: #CBD5E1;
    }
    .module-card-img-wrap {
        height: 190px;
        overflow: hidden;
        position: relative;
        background-color: #E2E8F0;
    }
    .module-card-img-wrap img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }
    .module-card:hover .module-card-img-wrap img {
        transform: scale(1.05);
    }
    .module-category-tag {
        position: absolute;
        top: 14px;
        left: 14px;
        background: rgba(15, 23, 42, 0.85);
        backdrop-filter: blur(4px);
        color: #34D399;
        font-size: 12px;
        font-weight: 600;
        padding: 3px 10px;
        border-radius: 4px;
    }
    .module-card-body {
        padding: 24px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .module-card-title {
        font-size: 19px;
        font-weight: 800;
        color: var(--primary);
        margin-bottom: 10px;
        line-height: 1.4;
    }
    .module-card-text {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.65;
        margin-bottom: 18px;
        flex: 1;
    }
    .module-spec-list {
        list-style: none;
        margin-bottom: 20px;
        padding-top: 14px;
        border-top: 1px solid var(--border-color);
        display: flex;
        flex-direction: column;
        gap: 8px;
    }
    .module-spec-item {
        font-size: 13px;
        color: #475569;
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .module-spec-item span.spec-val {
        font-weight: 700;
        color: var(--primary);
        margin-left: auto;
    }
    .module-card-foot {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding-top: 16px;
        border-top: 1px solid var(--border-color);
    }
    .module-link-btn {
        font-size: 14px;
        font-weight: 700;
        color: var(--accent);
        display: inline-flex;
        align-items: center;
        gap: 4px;
    }
    .module-link-btn:hover { color: var(--accent-hover); }

    /* 通用板块标题 */
    .section-head {
        text-align: center;
        margin-bottom: 44px;
    }
    .section-kicker {
        display: inline-block;
        font-size: 12px;
        font-weight: 800;
        text-transform: uppercase;
        letter-spacing: 1px;
        color: var(--accent);
        background: var(--accent-light);
        padding: 4px 14px;
        border-radius: var(--radius-full);
        margin-bottom: 12px;
    }
    .section-head h2 {
        font-size: 30px;
        font-weight: 800;
        color: var(--primary);
        line-height: 1.35;
        margin-bottom: 12px;
    }
    .section-desc {
        font-size: 15px;
        color: var(--text-muted);
        max-width: 680px;
        margin: 0 auto;
        line-height: 1.7;
    }

    /* 板块 4: 软硬件一体化支撑板块 */
    .iot-hardware-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 40px;
        align-items: center;
    }
    .iot-card-preview {
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: var(--card-shadow);
        border: 1px solid var(--border-color);
        background: #FFFFFF;
    }
    .iot-card-preview img {
        width: 100%;
        height: auto;
    }
    .iot-info-list {
        display: flex;
        flex-direction: column;
        gap: 20px;
    }
    .iot-info-item {
        background: #FFFFFF;
        padding: 20px;
        border-radius: var(--radius-md);
        border: 1px solid var(--border-color);
        transition: all 0.2s ease;
    }
    .iot-info-item:hover {
        border-color: var(--accent);
        box-shadow: var(--card-shadow);
    }
    .iot-item-head {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 8px;
    }
    .iot-icon-box {
        width: 32px;
        height: 32px;
        background: var(--accent-light);
        color: var(--accent);
        border-radius: 6px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 800;
        font-size: 14px;
    }
    .iot-item-head h4 {
        font-size: 17px;
        font-weight: 700;
        color: var(--primary);
    }
    .iot-info-item p {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.6;
        padding-left: 44px;
    }

    /* 板块 5: 行业指标成效对比表 */
    .metrics-table-wrap {
        background: #FFFFFF;
        border-radius: var(--radius-lg);
        border: 1px solid var(--border-color);
        overflow: hidden;
        box-shadow: var(--card-shadow);
    }
    .metrics-table {
        width: 100%;
        border-collapse: collapse;
        text-align: left;
    }
    .metrics-table th {
        background-color: var(--primary);
        color: #FFFFFF;
        padding: 16px 24px;
        font-weight: 700;
        font-size: 15px;
    }
    .metrics-table td {
        padding: 18px 24px;
        border-bottom: 1px solid var(--border-color);
        font-size: 14px;
        color: #334155;
    }
    .metrics-table tr:last-child td { border-bottom: none; }
    .metrics-table tr:hover td { background-color: #F8FAFC; }
    .metric-badge-old {
        display: inline-block;
        color: #DC2626;
        background: #FEF2F2;
        padding: 3px 10px;
        border-radius: var(--radius-sm);
        font-weight: 600;
        font-size: 13px;
    }
    .metric-badge-new {
        display: inline-block;
        color: #059669;
        background: #ECFDF5;
        padding: 3px 10px;
        border-radius: var(--radius-sm);
        font-weight: 700;
        font-size: 13px;
    }

    /* 板块 6: 分类专项业务 FAQ */
    .faq-container {
        max-width: 860px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 16px;
    }
    .faq-card {
        background: #FFFFFF;
        border-radius: var(--radius-md);
        border: 1px solid var(--border-color);
        overflow: hidden;
        transition: border-color 0.25s ease;
    }
    .faq-card:hover { border-color: #CBD5E1; }
    .faq-question {
        padding: 20px 24px;
        font-size: 16px;
        font-weight: 700;
        color: var(--primary);
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        user-select: none;
    }
    .faq-icon-arrow {
        width: 20px;
        height: 20px;
        transition: transform 0.3s ease;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: var(--text-muted);
    }
    .faq-answer {
        padding: 0 24px 20px 24px;
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.7;
    }
    details[open] .faq-icon-arrow {
        transform: rotate(180deg);
        color: var(--accent);
    }
    summary { list-style: none; }
    summary::-webkit-details-marker { display: none; }

    /* 板块 7: 分类页专属收尾咨询条 */
    .cta-strip-card {
        background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
        border-radius: var(--radius-lg);
        padding: 48px;
        color: #FFFFFF;
        border: 1px solid rgba(255, 255, 255, 0.08);
        box-shadow: 0 20px 30px -10px rgba(15, 23, 42, 0.3);
    }
    .cta-inner-grid {
        display: grid;
        grid-template-columns: 1.2fr 1fr;
        gap: 40px;
        align-items: center;
    }
    .cta-text-side h3 {
        font-size: 26px;
        font-weight: 800;
        margin-bottom: 12px;
        color: #FFFFFF;
    }
    .cta-text-side p {
        font-size: 15px;
        color: #94A3B8;
        line-height: 1.7;
    }
    .cta-form-side {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .cta-input-group {
        display: flex;
        gap: 10px;
    }
    .cta-input-group input {
        flex: 1;
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.2);
        color: #FFFFFF;
        padding: 12px 16px;
        border-radius: var(--radius-md);
        font-size: 14px;
        outline: none;
    }
    .cta-input-group input::placeholder { color: #64748B; }
    .cta-input-group input:focus {
        border-color: #34D399;
        background: rgba(255, 255, 255, 0.12);
    }
    .cta-form-hint {
        font-size: 12px;
        color: #64748B;
        text-align: right;
    }

    /* 页脚组件统一规则 */
    .site-footer {
        background-color: #0B1120;
        color: #94A3B8;
        padding-top: 70px;
        padding-bottom: 30px;
        border-top: 1px solid #1E293B;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
        gap: 48px;
        margin-bottom: 50px;
    }
    .footer-logo-title {
        display: flex;
        align-items: center;
        gap: 10px;
        color: #FFFFFF;
        font-size: 18px;
        font-weight: 800;
        margin-bottom: 16px;
    }
    .footer-desc {
        font-size: 14px;
        line-height: 1.7;
        margin-bottom: 18px;
        color: #64748B;
    }
    .footer-col h5 {
        color: #FFFFFF;
        font-size: 15px;
        font-weight: 700;
        margin-bottom: 20px;
    }
    .footer-links {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .footer-links a {
        font-size: 14px;
        color: #94A3B8;
    }
    .footer-links a:hover {
        color: #34D399;
    }
    .footer-contact p {
        font-size: 13px;
        line-height: 1.6;
        margin-bottom: 10px;
        color: #94A3B8;
    }
    .footer-bottom {
        padding-top: 30px;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 16px;
        font-size: 13px;
        color: #64748B;
    }
    .copyright-info a { color: #64748B; margin-left: 10px; }
    .copyright-info a:hover { color: #34D399; }

    /* 响应式断点 */
    @media (max-width: 1024px) {
        .module-grid { grid-template-columns: repeat(2, 1fr); }
        .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
        .iot-hardware-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
        .site-topbar { display: none; }
        .header-inner { height: 64px; }
        .menu-toggle { display: block; }
        .nav-actions { display: none; }
        .nav-menu {
            position: fixed;
            top: 64px;
            left: 0;
            width: 100%;
            background: #FFFFFF;
            flex-direction: column;
            padding: 24px;
            border-bottom: 1px solid var(--border-color);
            gap: 18px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            display: none;
        }
        .nav-menu.open { display: flex; }
        .category-hero h1 { font-size: 26px; }
        .module-grid { grid-template-columns: 1fr; }
        .cta-inner-grid { grid-template-columns: 1fr; gap: 24px; }
        .cta-input-group { flex-direction: column; }
        .footer-grid { grid-template-columns: 1fr; gap: 30px; }
        .filter-row { flex-direction: column; gap: 8px; }
        .filter-label { width: 100%; }
        .metrics-table-wrap { overflow-x: auto; }
        .metrics-table { min-width: 600px; }
    }