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

    :root {
      --primary: #2b4e8c;
      --primary-dark: #1a2f56;
      --primary-light: #e9eef8;
      --accent: #f5a623;
      --accent-light: #fef6e8;
      --accent-soft: #ffd98c;
      --gray-50: #f7f8fc;
      --gray-100: #f0f2f8;
      --gray-200: #e1e5ef;
      --gray-300: #cfd5e3;
      --gray-500: #7c879c;
      --gray-700: #3d4659;
      --gray-900: #1e2432;
      --radius-sm: 10px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 8px 30px rgba(43, 78, 140, 0.08);
      --shadow-lg: 0 16px 48px rgba(43, 78, 140, 0.12);
      --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font);
      background: #ffffff;
      color: var(--gray-900);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    /* 全局多彩涂鸦背景 */
    .page-bg {
      position: relative;
      background:
        radial-gradient(circle at 8% 12%, rgba(245, 166, 35, 0.08) 0, transparent 42%),
        radial-gradient(circle at 92% 18%, rgba(43, 78, 140, 0.07) 0, transparent 38%),
        radial-gradient(circle at 30% 88%, rgba(245, 166, 35, 0.07) 0, transparent 40%),
        radial-gradient(circle at 78% 72%, rgba(43, 78, 140, 0.06) 0, transparent 36%),
        repeating-linear-gradient(45deg, transparent, transparent 12px, rgba(43, 78, 140, 0.015) 12px, rgba(43, 78, 140, 0.015) 13px),
        #fdfcf9;
      min-height: 100vh;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航 */
    .site-header {
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--gray-200);
      position: sticky;
      top: 0;
      z-index: 100;
    }

    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      min-height: 68px;
    }

    .brand-area {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .ai-page-logo {
      display: block;
      height: 36px;
      width: auto;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary-dark);
      letter-spacing: -0.02em;
      white-space: nowrap;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0; /* 按要求设置为0 */
      flex-wrap: wrap;
      list-style: none;
    }

    .nav-links li {
      position: relative;
    }

    .nav-links a {
      display: inline-block;
      padding: 8px 12px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--gray-700);
      text-decoration: none;
      border-radius: 8px;
      transition: color 0.2s, background 0.2s;
      white-space: nowrap;
    }

    .nav-links a:hover {
      color: var(--primary);
      background: var(--primary-light);
    }

    .nav-cta {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      padding: 10px 22px;
      font-size: 0.9rem;
      font-weight: 600;
      border-radius: 40px;
      border: 2px solid transparent;
      cursor: pointer;
      text-decoration: none;
      transition: transform 0.2s, box-shadow 0.25s, background 0.25s, border-color 0.25s;
      line-height: 1.4;
      white-space: nowrap;
    }

    .btn:active {
      transform: scale(0.97);
    }

    .btn-primary {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
      box-shadow: 0 4px 14px rgba(43, 78, 140, 0.3);
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      border-color: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(43, 78, 140, 0.35);
    }

    .btn-accent {
      background: var(--accent);
      color: var(--gray-900);
      border-color: var(--accent);
      box-shadow: 0 4px 14px rgba(245, 166, 35, 0.35);
      font-weight: 700;
    }

    .btn-accent:hover {
      background: #e09515;
      border-color: #e09515;
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(245, 166, 35, 0.45);
    }

    .btn-outline {
      background: transparent;
      color: var(--primary);
      border-color: var(--primary);
    }

    .btn-outline:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }

    .btn-sm {
      padding: 8px 18px;
      font-size: 0.85rem;
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: 2px solid var(--gray-200);
      border-radius: 10px;
      padding: 8px 12px;
      cursor: pointer;
      font-size: 1.1rem;
      color: var(--gray-700);
      align-items: center;
      justify-content: center;
      transition: background 0.2s;
    }

    .mobile-toggle:hover {
      background: var(--gray-100);
    }

    /* Hero */
    .hero {
      padding: 64px 0 48px;
      position: relative;
      overflow: hidden;
    }

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

    .hero-content h1 {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.2;
      color: var(--primary-dark);
      letter-spacing: -0.03em;
      margin-bottom: 20px;
    }

    .hero-content h1 .highlight {
      color: var(--accent);
      position: relative;
      display: inline-block;
    }

    .hero-content h1 .highlight::after {
      content: '';
      position: absolute;
      left: 0;
      right: 0;
      bottom: 4px;
      height: 10px;
      background: var(--accent-soft);
      opacity: 0.45;
      border-radius: 4px;
      z-index: -1;
    }

    .hero-desc {
      font-size: 1.05rem;
      color: var(--gray-700);
      margin-bottom: 28px;
      max-width: 520px;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 32px;
    }

    .hero-metrics {
      display: flex;
      flex-wrap: wrap;
      gap: 24px 40px;
    }

    .hero-metric {
      display: flex;
      flex-direction: column;
    }

    .hero-metric strong {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
    }

    .hero-metric span {
      font-size: 0.82rem;
      color: var(--gray-500);
      font-weight: 500;
    }

    .hero-visual {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 340px;
    }

    /* 涂鸦式装饰卡片 */
    .hero-orb {
      position: absolute;
      border-radius: 50%;
      filter: blur(60px);
      opacity: 0.5;
      pointer-events: none;
    }

    .hero-orb-1 {
      width: 280px;
      height: 280px;
      background: var(--accent-soft);
      top: -20px;
      right: 40px;
    }

    .hero-orb-2 {
      width: 220px;
      height: 220px;
      background: #b8c9f0;
      bottom: -10px;
      left: 30px;
    }

    .hero-card-stack {
      position: relative;
      width: 100%;
      max-width: 340px;
      z-index: 2;
    }

    .hero-float-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 18px 22px;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--gray-200);
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 14px;
      animation: floatY 5s ease-in-out infinite;
    }

    .hero-float-card:nth-child(2) {
      animation-delay: 1s;
      margin-left: 24px;
    }

    .hero-float-card:nth-child(3) {
      animation-delay: 2s;
      margin-left: -12px;
    }

    .hero-float-icon {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      flex-shrink: 0;
    }

    .hero-float-card p {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--gray-900);
      line-height: 1.4;
    }

    .hero-float-card small {
      font-size: 0.75rem;
      color: var(--gray-500);
    }

    @keyframes floatY {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-8px); }
    }

    /* 滚动渐入 */
    .reveal {
      opacity: 0;
      transform: translateY(28px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* 区块标题统一样式 */
    .section {
      padding: 56px 0;
    }

    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 40px;
    }

    .section-badge {
      display: inline-block;
      padding: 5px 16px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.8rem;
      font-weight: 700;
      border-radius: 40px;
      margin-bottom: 14px;
      letter-spacing: 0.04em;
    }

    .section-header h2 {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.02em;
      margin-bottom: 12px;
      line-height: 1.3;
    }

    .section-header p {
      font-size: 0.98rem;
      color: var(--gray-500);
      line-height: 1.7;
    }

    /* 数据指标卡片 */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .stat-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 28px 22px;
      text-align: center;
      border: 1px solid var(--gray-200);
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s, box-shadow 0.3s;
    }

    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .stat-card strong {
      display: block;
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
      margin-bottom: 4px;
    }

    .stat-card span {
      font-size: 0.85rem;
      color: var(--gray-500);
      font-weight: 500;
    }

    /* 服务能力卡片 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .service-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 28px 24px;
      border: 1px solid var(--gray-200);
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--accent-soft);
    }

    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      background: var(--primary-light);
      color: var(--primary);
      transition: background 0.3s, color 0.3s;
    }

    .service-card:hover .service-icon {
      background: var(--accent-light);
      color: var(--accent);
    }

    .service-card h3 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--gray-900);
    }

    .service-card p {
      font-size: 0.88rem;
      color: var(--gray-500);
      line-height: 1.65;
      flex: 1;
    }

    /* 流程步骤 */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-item {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 26px 22px;
      border: 1px solid var(--gray-200);
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s, box-shadow 0.3s;
    }

    .step-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .step-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      border-radius: 10px;
      background: var(--accent);
      color: var(--gray-900);
      font-size: 0.9rem;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .step-item h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 8px;
    }

    .step-item p {
      font-size: 0.86rem;
      color: var(--gray-500);
      line-height: 1.6;
    }

    /* 对比表格 */
    .table-wrap {
      background: #fff;
      border-radius: var(--radius-md);
      border: 1px solid var(--gray-200);
      box-shadow: var(--shadow-sm);
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }

    table {
      width: 100%;
      border-collapse: collapse;
      min-width: 680px;
    }

    thead {
      background: var(--primary);
      color: #fff;
    }

    th {
      padding: 16px 18px;
      font-size: 0.88rem;
      font-weight: 600;
      text-align: left;
      white-space: nowrap;
    }

    td {
      padding: 15px 18px;
      font-size: 0.88rem;
      color: var(--gray-700);
      border-bottom: 1px solid var(--gray-100);
    }

    tbody tr:last-child td {
      border-bottom: none;
    }

    tbody tr:hover {
      background: var(--gray-50);
    }

    .rating-stars {
      color: var(--accent);
      font-size: 1.05rem;
      letter-spacing: 2px;
      font-weight: 700;
    }

    .score-badge {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      background: var(--accent-light);
      color: #b87a0a;
      font-weight: 800;
      padding: 4px 12px;
      border-radius: 30px;
      font-size: 0.85rem;
    }

    /* 案例展示 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .case-card {
      background: #fff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--gray-200);
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s, box-shadow 0.3s;
      display: flex;
      flex-direction: column;
    }

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

    .case-img-wrap {
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: var(--gray-100);
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s;
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.03);
    }

    .case-body {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .case-body h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--gray-900);
    }

    .case-body p {
      font-size: 0.85rem;
      color: var(--gray-500);
      line-height: 1.6;
    }

    /* 评论卡片 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .review-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 26px 24px;
      border: 1px solid var(--gray-200);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      gap: 12px;
      transition: transform 0.3s, box-shadow 0.3s;
    }

    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .review-stars {
      color: var(--accent);
      font-size: 0.95rem;
      letter-spacing: 2px;
    }

    .review-text {
      font-size: 0.9rem;
      color: var(--gray-700);
      line-height: 1.7;
      flex: 1;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 10px;
      padding-top: 12px;
      border-top: 1px solid var(--gray-100);
    }

    .review-avatar {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9rem;
      flex-shrink: 0;
    }

    .review-author-info strong {
      display: block;
      font-size: 0.86rem;
      color: var(--gray-900);
    }

    .review-author-info span {
      font-size: 0.76rem;
      color: var(--gray-500);
    }

    /* 文章列表 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .article-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--gray-200);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      gap: 10px;
      transition: transform 0.3s, box-shadow 0.3s;
      text-decoration: none;
    }

    .article-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .article-tag {
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--primary);
      background: var(--primary-light);
      padding: 3px 12px;
      border-radius: 30px;
      align-self: flex-start;
    }

    .article-card h3 {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--gray-900);
      line-height: 1.45;
    }

    .article-card p {
      font-size: 0.85rem;
      color: var(--gray-500);
      line-height: 1.6;
      flex: 1;
    }

    .article-more {
      font-size: 0.84rem;
      font-weight: 600;
      color: var(--accent);
    }

    /* FAQ */
    .faq-list {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #fff;
      border-radius: var(--radius-sm);
      border: 1px solid var(--gray-200);
      overflow: hidden;
      transition: box-shadow 0.25s;
    }

    .faq-item:hover {
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding: 18px 22px;
      background: none;
      border: none;
      text-align: left;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--gray-900);
      cursor: pointer;
      font-family: inherit;
      transition: background 0.2s;
    }

    .faq-question:hover {
      background: var(--gray-50);
    }

    .faq-arrow {
      font-size: 1.2rem;
      color: var(--gray-500);
      transition: transform 0.3s;
      flex-shrink: 0;
    }

    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
      color: var(--primary);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
    }

    .faq-answer p {
      padding: 0 22px 18px;
      font-size: 0.88rem;
      color: var(--gray-500);
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 260px;
    }

    /* 表单 */
    .form-section {
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 40px 36px;
      border: 1px solid var(--gray-200);
      box-shadow: var(--shadow-md);
      max-width: 820px;
      margin: 0 auto;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group.full {
      grid-column: 1 / -1;
    }

    .form-group label {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--gray-700);
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 11px 14px;
      border: 1.5px solid var(--gray-200);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      font-family: inherit;
      color: var(--gray-900);
      background: var(--gray-50);
      transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
      outline: none;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      background: #fff;
      box-shadow: 0 0 0 3px rgba(43, 78, 140, 0.1);
    }

    .form-group textarea {
      resize: vertical;
      min-height: 100px;
    }

    .form-submit {
      margin-top: 22px;
      display: flex;
      justify-content: center;
    }

    .form-submit .btn {
      min-width: 200px;
    }

    /* 标签云 */
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .tag-cloud span {
      padding: 6px 16px;
      background: #fff;
      border: 1px solid var(--gray-200);
      border-radius: 30px;
      font-size: 0.82rem;
      color: var(--gray-700);
      transition: background 0.2s, border-color 0.2s, color 0.2s;
      cursor: default;
    }

    .tag-cloud span:hover {
      background: var(--primary-light);
      border-color: var(--primary-light);
      color: var(--primary);
    }

    /* 服务网络 */
    .network-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .network-item {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 24px 20px;
      border: 1px solid var(--gray-200);
      text-align: center;
      transition: transform 0.3s, box-shadow 0.3s;
    }

    .network-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .network-item strong {
      display: block;
      font-size: 1rem;
      color: var(--primary-dark);
      margin-bottom: 4px;
    }

    .network-item span {
      font-size: 0.82rem;
      color: var(--gray-500);
    }

    /* 合作资源 */
    .partner-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .partner-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 22px;
      border: 1px solid var(--gray-200);
      display: flex;
      gap: 14px;
      align-items: flex-start;
      transition: transform 0.3s, box-shadow 0.3s;
    }

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

    .partner-icon {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: var(--accent-light);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      flex-shrink: 0;
    }

    .partner-card strong {
      display: block;
      font-size: 0.92rem;
      color: var(--gray-900);
      margin-bottom: 2px;
    }

    .partner-card p {
      font-size: 0.82rem;
      color: var(--gray-500);
      line-height: 1.55;
    }

    /* Footer */
    .site-footer {
      background: var(--primary-dark);
      color: #e0e6f0;
      padding: 48px 0 24px;
      margin-top: 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 32px;
    }

    .footer-brand .ai-page-logo {
      height: 32px;
      margin-bottom: 14px;
      
    }

    .footer-brand p {
      font-size: 0.85rem;
      color: #b8c4dc;
      line-height: 1.7;
      max-width: 280px;
    }

    .footer-col h4 {
      font-size: 0.9rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 16px;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 9px;
    }

    .footer-col a {
      font-size: 0.85rem;
      color: #b8c4dc;
      text-decoration: none;
      transition: color 0.2s;
    }

    .footer-col a:hover {
      color: var(--accent-soft);
    }

    .footer-contact-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.85rem;
      color: #b8c4dc;
    }

    .footer-contact-item strong {
      color: #ffffff;
      font-weight: 600;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding-top: 20px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
    }

    .footer-bottom p {
      font-size: 0.8rem;
      color: #8e9bb5;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .footer-links a {
      font-size: 0.8rem;
      color: #b8c4dc;
      text-decoration: none;
      transition: color 0.2s;
    }

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

    /* 浮动客服 */
    .float-kefu {
      position: fixed;
      right: 22px;
      bottom: 90px;
      z-index: 200;
      display: flex;
      flex-direction: column;
      gap: 12px;
      align-items: center;
    }

    .float-kefu-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      cursor: pointer;
      box-shadow: var(--shadow-md);
      border: none;
      transition: transform 0.25s, background 0.25s;
    }

    .float-kefu-btn:hover {
      transform: scale(1.08);
      background: var(--primary-dark);
    }

    .float-kefu-pop {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 16px;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--gray-200);
      width: 160px;
      text-align: center;
      display: none;
      position: absolute;
      right: 62px;
      bottom: 0;
    }

    .float-kefu-pop.show {
      display: block;
      animation: popIn 0.25s ease;
    }

    .float-kefu-pop img {
      width: 100%;
      max-width: 120px;
      height: auto;
      border-radius: 8px;
      display: block;
      margin: 0 auto 8px;
    }

    .float-kefu-pop p {
      font-size: 0.78rem;
      color: var(--gray-700);
      font-weight: 600;
    }

    @keyframes popIn {
      from { opacity: 0; transform: translateY(6px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .back-top {
      position: fixed;
      right: 22px;
      bottom: 24px;
      z-index: 199;
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #fff;
      color: var(--primary);
      border: 1.5px solid var(--gray-200);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      cursor: pointer;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s, background 0.25s;
      opacity: 0;
      pointer-events: none;
    }

    .back-top.show {
      opacity: 1;
      pointer-events: auto;
    }

    .back-top:hover {
      transform: translateY(-3px);
      background: var(--primary-light);
    }

    /* 响应式 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .hero-visual {
        min-height: 260px;
      }

      .hero-content h1 {
        font-size: 2.3rem;
      }

      .services-grid,
      .cases-grid,
      .reviews-grid,
      .articles-grid,
      .partner-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .network-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }

      .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        background: #fff;
        border-radius: var(--radius-md);
        padding: 12px;
        box-shadow: var(--shadow-md);
        border: 1px solid var(--gray-200);
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        z-index: 99;
      }

      .nav-links.open {
        display: flex;
      }

      .nav-links a {
        width: 100%;
        padding: 10px 14px;
      }

      .mobile-toggle {
        display: flex;
      }

      .nav-cta .btn {
        padding: 8px 16px;
        font-size: 0.82rem;
      }

      .nav-wrap {
        position: relative;
        flex-wrap: wrap;
      }
    }

    @media (max-width: 720px) {
      .hero {
        padding: 40px 0 32px;
      }

      .hero-content h1 {
        font-size: 1.75rem;
      }

      .hero-desc {
        font-size: 0.95rem;
      }

      .services-grid,
      .cases-grid,
      .reviews-grid,
      .articles-grid,
      .partner-grid {
        grid-template-columns: 1fr;
      }

      .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
      }

      .steps-grid {
        grid-template-columns: 1fr;
      }

      .network-grid {
        grid-template-columns: 1fr 1fr;
      }

      .form-grid {
        grid-template-columns: 1fr;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .section-header h2 {
        font-size: 1.45rem;
      }

      .section {
        padding: 40px 0;
      }

      .form-section {
        padding: 26px 20px;
      }

      .stat-card strong {
        font-size: 1.6rem;
      }

      .hero-metrics {
        gap: 16px 28px;
      }

      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }

      .footer-links {
        justify-content: center;
      }

      .float-kefu {
        right: 14px;
        bottom: 78px;
      }

      .back-top {
        right: 14px;
        bottom: 16px;
      }

      .container {
        padding: 0 16px;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
      }
    }