/* roulang page: index */
:root {
      --primary: #0B0F17;
      --primary-light: #1E293B;
      --accent: #00DC82;
      --accent-hover: #00B96D;
      --accent-blue: #0A84FF;
      --dark-surface: #0F172A;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --border-color: rgba(226, 232, 240, 0.9);
      --border-dark: rgba(255, 255, 255, 0.12);
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 8px 24px -4px rgba(11, 15, 23, 0.08);
      --shadow-lg: 0 16px 36px -6px rgba(11, 15, 23, 0.12);
      --transition: all 0.24s cubic-bezier(0.16, 1, 0.3, 1);
      --container-width: 1240px;
    }

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

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

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-white);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

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

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

    /* 顶部微型信息条 */
    .top-bar {
      background: #06090e;
      color: var(--text-light);
      font-size: 13px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 38px;
    }
    .top-bar-left span {
      margin-right: 20px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .top-bar-right a {
      color: var(--text-light);
    }
    .top-bar-right a:hover {
      color: var(--accent);
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .site-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 20px;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .logo-badge {
      display: inline-block;
      width: 10px;
      height: 10px;
      background: var(--accent);
      border-radius: 2px;
      box-shadow: 0 0 10px var(--accent);
    }
    .nav-menu {
      display: flex;
      list-style: none;
      gap: 28px;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 8px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after, .nav-link:hover::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
    }
    .header-cta {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-md);
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-accent {
      background: var(--accent);
      color: #062215;
    }
    .btn-accent:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(0, 220, 130, 0.25);
    }
    .btn-outline-dark {
      border-color: rgba(255, 255, 255, 0.3);
      color: #FFFFFF;
      background: transparent;
    }
    .btn-outline-dark:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: #FFFFFF;
    }
    .btn-outline {
      border-color: var(--border-color);
      color: var(--text-main);
      background: #FFFFFF;
    }
    .btn-outline:hover {
      border-color: var(--primary);
      background: var(--bg-light);
    }
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--primary);
    }

    /* 板块共用样式 */
    .section-wrap {
      padding: 96px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 56px;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      color: var(--accent);
      background: rgba(0, 220, 130, 0.1);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 14px;
      letter-spacing: 0.04em;
    }
    .section-tag.dark {
      background: rgba(255, 255, 255, 0.1);
      color: var(--accent);
    }
    .section-title {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.3;
      letter-spacing: -0.02em;
      margin-bottom: 16px;
      color: var(--primary);
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. 指标看板与价值基座区（旗舰首屏） */
    .hero-flagship {
      position: relative;
      background: var(--primary);
      color: #FFFFFF;
      min-height: 640px;
      display: flex;
      align-items: center;
      background-image: linear-gradient(rgba(11, 15, 23, 0.82), rgba(11, 15, 23, 0.94)), url('/assets/images/4b4b756ad2024e55.webp');
      background-size: cover;
      background-position: center;
      padding: 90px 0 110px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .hero-content {
      max-width: 880px;
      margin: 0 auto;
      text-align: center;
    }
    .hero-h1 {
      font-size: 50px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.03em;
      margin-bottom: 24px;
    }
    .hero-h1 span {
      color: var(--accent);
    }
    .hero-sub {
      font-size: 18px;
      line-height: 1.75;
      color: #CBD5E1;
      margin-bottom: 36px;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 50px;
    }
    .hero-nav-strip {
      display: flex;
      justify-content: center;
      gap: 12px;
      flex-wrap: wrap;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
    }
    .hero-nav-item {
      font-size: 13px;
      color: #94A3B8;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 6px 16px;
      border-radius: 20px;
      transition: var(--transition);
    }
    .hero-nav-item:hover {
      color: #FFFFFF;
      background: rgba(255, 255, 255, 0.12);
      border-color: var(--accent);
    }

    /* 2. 品牌数字化平台能力全景 */
    .overview-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 56px;
      align-items: center;
    }
    .spec-badges {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 28px;
    }
    .spec-badge-item {
      background: var(--bg-light);
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .spec-badge-item h4 {
      font-size: 15px;
      color: var(--primary);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .spec-badge-item p {
      font-size: 13px;
      color: var(--text-muted);
    }
    .overview-visual {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }

    /* 3. 数据驱动核心优势矩阵 */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .advantage-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .advantage-card:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .card-icon {
      width: 44px;
      height: 44px;
      border-radius: 8px;
      background: rgba(0, 220, 130, 0.12);
      color: #065F3E;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 18px;
      margin-bottom: 20px;
    }
    .advantage-card h3 {
      font-size: 18px;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .advantage-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 4. 全链路产品矩阵 */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .product-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      position: relative;
      transition: var(--transition);
    }
    .product-card.featured {
      border-color: var(--accent);
      box-shadow: var(--shadow-md);
    }
    .featured-label {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--accent);
      color: #062215;
      font-size: 11px;
      font-weight: 800;
      padding: 4px 10px;
      border-radius: 20px;
      letter-spacing: 0.05em;
    }
    .product-card h3 {
      font-size: 20px;
      margin-bottom: 12px;
      color: var(--primary);
    }
    .product-card p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.6;
    }
    .product-checklist {
      list-style: none;
      margin-bottom: 28px;
      flex-grow: 1;
    }
    .product-checklist li {
      font-size: 13px;
      color: var(--text-main);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .product-checklist li::before {
      content: "✓";
      color: var(--accent);
      font-weight: 800;
    }

    /* 5. 深色对比理念与数字化治理底座 */
    .dark-governance {
      background: var(--dark-surface);
      color: #FFFFFF;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .dark-governance .section-title {
      color: #FFFFFF;
    }
    .dark-governance .section-desc {
      color: #94A3B8;
    }
    .dark-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .dark-card-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .dark-item {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border-dark);
      padding: 24px;
      border-radius: var(--radius-md);
      transition: var(--transition);
    }
    .dark-item:hover {
      background: rgba(255, 255, 255, 0.07);
      border-color: var(--accent);
    }
    .dark-item h4 {
      font-size: 17px;
      color: #FFFFFF;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .dark-item p {
      font-size: 14px;
      color: #94A3B8;
      line-height: 1.65;
    }

    /* 6. 行业解决方案对比看板 */
    .compare-table-wrap {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .compare-table th, .compare-table td {
      padding: 20px 24px;
      border-bottom: 1px solid var(--border-color);
    }
    .compare-table th {
      background: var(--bg-light);
      font-weight: 700;
      color: var(--primary);
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .highlight-cell {
      background: rgba(0, 220, 130, 0.04);
      color: #065F3E;
      font-weight: 600;
    }
    .negative-cell {
      color: #64748B;
    }

    /* 7. 品牌数字化实施里程碑 */
    .milestone-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .milestone-step {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      padding: 28px 20px;
      border-radius: var(--radius-md);
      position: relative;
    }
    .step-num {
      font-size: 28px;
      font-weight: 800;
      color: rgba(0, 220, 130, 0.4);
      margin-bottom: 12px;
      line-height: 1;
    }
    .milestone-step h3 {
      font-size: 17px;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .milestone-step p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 8. 标杆企业数字化用户故事 */
    .story-card {
      background: var(--bg-light);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .story-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .story-body {
      padding: 48px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .story-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--accent-blue);
      text-transform: uppercase;
      margin-bottom: 12px;
      letter-spacing: 0.05em;
    }
    .story-body h3 {
      font-size: 24px;
      color: var(--primary);
      margin-bottom: 16px;
      line-height: 1.35;
    }
    .story-body p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.7;
    }
    .story-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
    }
    .story-stat-val {
      font-size: 22px;
      font-weight: 800;
      color: var(--primary);
    }
    .story-stat-lbl {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 9. 全网核心成效数据条 */
    .stats-strip {
      background: var(--primary);
      color: #FFFFFF;
      padding: 56px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .stat-number {
      font-size: 44px;
      font-weight: 800;
      color: var(--accent);
      letter-spacing: -0.02em;
      margin-bottom: 8px;
      font-variant-numeric: tabular-nums;
    }
    .stat-desc {
      font-size: 14px;
      color: #CBD5E1;
      font-weight: 500;
    }

    /* 10. 多行业客户原声评价 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: var(--bg-white);
      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;
    }
    .review-quote {
      font-size: 14px;
      color: var(--text-main);
      line-height: 1.75;
      margin-bottom: 20px;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      overflow: hidden;
      flex-shrink: 0;
    }
    .reviewer-avatar img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .reviewer-info h4 {
      font-size: 14px;
      color: var(--primary);
    }
    .reviewer-info p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 11. 资讯摘要 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .news-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .news-thumb {
      height: 180px;
      overflow: hidden;
    }
    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .news-card:hover .news-thumb img {
      transform: scale(1.05);
    }
    .news-content {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
      line-height: 1.45;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .news-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .news-link {
      margin-top: auto;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .news-link:hover {
      color: var(--accent);
    }

    /* 12. 平台合规安全与服务保障 */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .guarantee-box {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      background: var(--bg-light);
      text-align: center;
    }
    .guarantee-icon {
      font-size: 24px;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 12px;
    }
    .guarantee-box h4 {
      font-size: 16px;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .guarantee-box p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 13. 高频业务解答与转化表单 */
    .faq-form-section {
      background: var(--bg-light);
      border-top: 1px solid var(--border-color);
    }
    .faq-accordion {
      max-width: 840px;
      margin: 0 auto 64px;
    }
    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item.active {
      border-color: var(--accent);
    }
    .faq-question {
      padding: 18px 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-symbol {
      font-size: 20px;
      color: var(--text-muted);
      transition: var(--transition);
    }
    .faq-item.active .faq-symbol {
      transform: rotate(45deg);
      color: var(--accent);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #FAFAFA;
      padding: 0 24px;
    }
    .faq-item.active .faq-answer {
      padding: 0 24px 20px;
      max-height: 200px;
    }
    .faq-answer p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .form-panel {
      max-width: 840px;
      margin: 0 auto;
      background: var(--primary);
      color: #FFFFFF;
      padding: 48px;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-lg);
    }
    .form-panel h3 {
      font-size: 26px;
      font-weight: 800;
      margin-bottom: 12px;
      text-align: center;
    }
    .form-panel p {
      font-size: 14px;
      color: #94A3B8;
      text-align: center;
      margin-bottom: 32px;
    }
    .lead-form {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .form-group-full {
      grid-column: span 2;
    }
    .form-control {
      width: 100%;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-sm);
      padding: 12px 16px;
      color: #FFFFFF;
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--accent);
      background: rgba(255, 255, 255, 0.12);
    }
    .form-control option {
      background: var(--primary);
      color: #FFFFFF;
    }
    .form-submit-btn {
      width: 100%;
      padding: 14px;
      font-size: 15px;
      font-weight: 700;
      background: var(--accent);
      color: #062215;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
    }
    .form-submit-btn:hover {
      background: var(--accent-hover);
    }

    /* 底部固定转化条 */
    .fixed-conversion-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(11, 15, 23, 0.95);
      backdrop-filter: blur(10px);
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: 12px 0;
      z-index: 999;
      transform: translateY(100%);
      transition: transform 0.3s ease;
    }
    .fixed-conversion-bar.visible {
      transform: translateY(0);
    }
    .bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .bar-text {
      color: #FFFFFF;
      font-size: 14px;
      font-weight: 600;
    }
    .bar-text span {
      color: var(--accent);
      margin-left: 8px;
      font-weight: 400;
      font-size: 13px;
    }

    /* 综合页脚 */
    .site-footer {
      background: #06090e;
      color: #94A3B8;
      padding: 80px 0 36px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 60px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .footer-about p {
      font-size: 13px;
      line-height: 1.7;
      margin-top: 16px;
      color: #64748B;
    }
    .footer-contact li {
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .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: #64748B;
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .advantage-grid, .product-grid, .reviews-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .milestone-steps, .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 36px;
      }
      .overview-grid, .dark-grid, .story-card {
        grid-template-columns: 1fr;
      }
      .hero-h1 {
        font-size: 38px;
      }
    }

    @media (max-width: 768px) {
      .section-wrap {
        padding: 60px 0;
      }
      .top-bar {
        display: none;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-md);
        gap: 16px;
      }
      .nav-menu.open {
        display: flex;
      }
      .nav-toggle {
        display: block;
      }
      .advantage-grid, .product-grid, .reviews-grid, .news-grid, .stats-grid, .milestone-steps, .guarantee-grid {
        grid-template-columns: 1fr;
      }
      .lead-form {
        grid-template-columns: 1fr;
      }
      .form-group-full {
        grid-column: span 1;
      }
      .form-panel {
        padding: 28px 20px;
      }
      .story-body {
        padding: 28px 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
      .bar-inner {
        flex-direction: column;
        gap: 8px;
        text-align: center;
      }
      .hero-h1 {
        font-size: 30px;
      }
      .hero-sub {
        font-size: 15px;
      }
      .hero-actions {
        flex-direction: column;
      }
    }