* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    :root {
      --mint-50: #f0fbf6;
      --mint-100: #d6f2e3;
      --mint-200: #b0e6cc;
      --mint-300: #7fd6ad;
      --mint-400: #4ec38c;
      --mint-500: #2fae74;
      --mint-600: #1f8f5d;
      --mint-700: #1a734b;
      --mint-800: #145c3d;
      --mint-900: #0f4830;
      --gray-50: #f7faf8;
      --gray-100: #eef4f0;
      --gray-200: #dde8e2;
      --gray-300: #c2d4cb;
      --gray-600: #4a635a;
      --gray-800: #1f332b;
      --gray-900: #0f241d;
      --shadow-sm: 0 2px 8px rgba(30, 60, 45, 0.06);
      --shadow-md: 0 8px 24px rgba(30, 60, 45, 0.08);
      --shadow-lg: 0 16px 40px rgba(30, 60, 45, 0.10);
      --radius: 16px;
      --radius-sm: 10px;
    }
    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--mint-50);
      color: var(--gray-800);
      line-height: 1.6;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    ul {
      list-style: none;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 顶部导航 */
    .header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--mint-100);
      box-shadow: var(--shadow-sm);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      padding: 12px 0;
    }
    .logo-wrap {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .ai-page-logo {
      max-height: 40px;
      width: auto;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      flex-wrap: wrap;
    }
    .nav-links a {
      display: inline-block;
      padding: 8px 12px;
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--gray-600);
      border-radius: 20px;
      transition: background 0.2s, color 0.2s;
      white-space: nowrap;
    }
    .nav-links a:hover {
      background: var(--mint-100);
      color: var(--mint-800);
    }
    .nav-cta {
      display: inline-block;
      background: var(--mint-600);
      color: #fff !important;
      padding: 8px 20px;
      border-radius: 30px;
      font-weight: 600;
      transition: background 0.2s, transform 0.2s;
    }
    .nav-cta:hover {
      background: var(--mint-700);
      transform: translateY(-1px);
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: 1px solid var(--mint-200);
      border-radius: 10px;
      padding: 8px 12px;
      font-size: 1.4rem;
      color: var(--mint-700);
      cursor: pointer;
      line-height: 1;
    }
    /* Hero */
    .hero {
      padding: 64px 0 56px;
      position: relative;
      overflow: hidden;
      background: radial-gradient(circle at 10% 20%, rgba(127, 214, 173, 0.15) 0%, transparent 40%),
                  radial-gradient(circle at 90% 80%, rgba(78, 195, 140, 0.12) 0%, transparent 45%),
                  var(--mint-50);
    }
    .hero-content {
      max-width: 780px;
      position: relative;
      z-index: 2;
    }
    .hero-badge {
      display: inline-block;
      background: var(--mint-100);
      color: var(--mint-800);
      font-size: 0.82rem;
      font-weight: 600;
      padding: 6px 16px;
      border-radius: 20px;
      margin-bottom: 20px;
      letter-spacing: 0.5px;
    }
    .hero h1 {
      font-size: 2.8rem;
      line-height: 1.2;
      font-weight: 800;
      color: var(--gray-900);
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .hero h1 span {
      color: var(--mint-600);
    }
    .hero-desc {
      font-size: 1.1rem;
      color: var(--gray-600);
      max-width: 620px;
      margin-bottom: 32px;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }
    .btn-primary {
      display: inline-block;
      background: var(--mint-600);
      color: #fff;
      padding: 14px 36px;
      border-radius: 40px;
      font-weight: 700;
      font-size: 1rem;
      box-shadow: 0 8px 20px rgba(47, 174, 116, 0.3);
      transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
    }
    .btn-primary:hover {
      background: var(--mint-700);
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(47, 174, 116, 0.4);
    }
    .btn-outline {
      display: inline-block;
      background: transparent;
      color: var(--mint-700);
      padding: 14px 32px;
      border-radius: 40px;
      font-weight: 600;
      border: 1.5px solid var(--mint-300);
      transition: border-color 0.25s, background 0.25s, transform 0.25s;
    }
    .btn-outline:hover {
      border-color: var(--mint-600);
      background: var(--mint-100);
      transform: translateY(-2px);
    }
    .hero-stats {
      display: flex;
      flex-wrap: wrap;
      gap: 40px;
      margin-top: 48px;
      padding-top: 32px;
      border-top: 1px solid var(--mint-200);
    }
    .hero-stat-item h3 {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--mint-700);
      margin-bottom: 4px;
    }
    .hero-stat-item p {
      font-size: 0.92rem;
      color: var(--gray-600);
    }
    /* 通用区块 */
    .section {
      padding: 72px 0;
    }
    .section-alt {
      background: #fff;
    }
    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 48px;
    }
    .section-tag {
      display: inline-block;
      background: var(--mint-100);
      color: var(--mint-700);
      font-size: 0.8rem;
      font-weight: 600;
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 12px;
      letter-spacing: 0.4px;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--gray-900);
      margin-bottom: 12px;
      line-height: 1.3;
    }
    .section-desc {
      font-size: 1.02rem;
      color: var(--gray-600);
      line-height: 1.7;
    }
    /* 卡片通用 */
    .card {
      background: #fff;
      border-radius: var(--radius);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--mint-100);
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      background: var(--mint-100);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      font-size: 1.5rem;
      color: var(--mint-700);
    }
    .card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--gray-900);
    }
    .card p {
      font-size: 0.95rem;
      color: var(--gray-600);
      line-height: 1.65;
    }
    /* 网格布局 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    /* 关于我们 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: start;
    }
    .about-text h2 {
      font-size: 1.9rem;
      font-weight: 800;
      color: var(--gray-900);
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .about-text p {
      font-size: 1rem;
      color: var(--gray-600);
      margin-bottom: 16px;
      line-height: 1.8;
    }
    .about-points {
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-top: 24px;
    }
    .about-point {
      display: flex;
      gap: 12px;
      align-items: flex-start;
    }
    .about-point span {
      color: var(--mint-600);
      font-weight: 700;
      flex-shrink: 0;
      margin-top: 2px;
    }
    .about-point p {
      font-size: 0.95rem;
      color: var(--gray-600);
      margin: 0;
    }
    .about-visual {
      background: linear-gradient(145deg, var(--mint-100), var(--mint-50));
      border-radius: var(--radius);
      padding: 32px;
      border: 1px solid var(--mint-100);
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .about-visual-item {
      display: flex;
      align-items: center;
      gap: 14px;
      background: #fff;
      padding: 16px 20px;
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s;
    }
    .about-visual-item:hover {
      transform: translateX(4px);
    }
    .about-visual-item .icon {
      width: 40px;
      height: 40px;
      background: var(--mint-100);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      color: var(--mint-700);
      flex-shrink: 0;
    }
    .about-visual-item .text h4 {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--gray-900);
      margin-bottom: 2px;
    }
    .about-visual-item .text p {
      font-size: 0.85rem;
      color: var(--gray-600);
    }
    /* 服务能力卡片 -- 部分复用卡片样式 */
    /* 流程步骤 */
    .steps {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      justify-content: center;
      counter-reset: step;
    }
    .step-item {
      flex: 1;
      min-width: 160px;
      background: #fff;
      border-radius: var(--radius-sm);
      padding: 24px 18px;
      text-align: center;
      border: 1px solid var(--mint-100);
      box-shadow: var(--shadow-sm);
      position: relative;
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .step-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .step-num {
      width: 36px;
      height: 36px;
      background: var(--mint-600);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.95rem;
      margin: 0 auto 12px;
    }
    .step-item h4 {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--gray-900);
      margin-bottom: 6px;
    }
    .step-item p {
      font-size: 0.85rem;
      color: var(--gray-600);
      line-height: 1.5;
    }
    /* 对比评测 */
    .compare-table-wrap {
      overflow-x: auto;
      background: #fff;
      border-radius: var(--radius);
      border: 1px solid var(--mint-100);
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 700px;
      font-size: 0.95rem;
    }
    .compare-table th {
      background: var(--mint-100);
      color: var(--gray-900);
      padding: 16px 20px;
      text-align: left;
      font-weight: 700;
      white-space: nowrap;
    }
    .compare-table td {
      padding: 14px 20px;
      border-bottom: 1px solid var(--mint-100);
      color: var(--gray-600);
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-table tr:hover td {
      background: var(--mint-50);
    }
    .rating-star {
      color: #f5b342;
      font-size: 1.1rem;
      letter-spacing: 2px;
    }
    .score-badge {
      display: inline-block;
      background: var(--mint-600);
      color: #fff;
      padding: 4px 14px;
      border-radius: 20px;
      font-weight: 700;
      font-size: 0.9rem;
    }
    /* FAQ */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: #fff;
      border-radius: var(--radius-sm);
      border: 1px solid var(--mint-100);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: box-shadow 0.2s;
    }
    .faq-item:hover {
      box-shadow: var(--shadow-md);
    }
    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 24px;
      cursor: pointer;
      font-weight: 600;
      color: var(--gray-900);
      font-size: 1rem;
      background: #fff;
      border: none;
      width: 100%;
      text-align: left;
      transition: background 0.2s;
    }
    .faq-question:hover {
      background: var(--mint-50);
    }
    .faq-toggle {
      font-size: 1.4rem;
      color: var(--mint-600);
      transition: transform 0.3s;
      flex-shrink: 0;
      margin-left: 16px;
    }
    .faq-item.open .faq-toggle {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 24px;
      color: var(--gray-600);
      font-size: 0.95rem;
      line-height: 1.7;
      background: #fff;
    }
    .faq-item.open .faq-answer {
      max-height: 300px;
      padding: 0 24px 20px;
    }
    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #fff;
      border-radius: var(--radius);
      padding: 26px 24px;
      border: 1px solid var(--mint-100);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .review-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .review-avatar {
      width: 44px;
      height: 44px;
      background: var(--mint-200);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--mint-800);
      font-size: 1.1rem;
      flex-shrink: 0;
    }
    .review-user h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--gray-900);
    }
    .review-user p {
      font-size: 0.8rem;
      color: var(--gray-600);
    }
    .review-text {
      font-size: 0.92rem;
      color: var(--gray-600);
      line-height: 1.7;
    }
    .review-stars {
      color: #f5b342;
      font-size: 0.9rem;
      margin-top: 12px;
      letter-spacing: 2px;
    }
    /* 案例与素材展示 */
    .case-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr;
      gap: 24px;
      align-items: stretch;
    }
    .case-large {
      background: #fff;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--mint-100);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .case-large:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .case-img-wrap {
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: var(--mint-100);
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s;
    }
    .case-large:hover .case-img-wrap img {
      transform: scale(1.03);
    }
    .case-body {
      padding: 20px 24px;
    }
    .case-body h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--gray-900);
      margin-bottom: 6px;
    }
    .case-body p {
      font-size: 0.92rem;
      color: var(--gray-600);
    }
    .case-side {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .case-small {
      background: #fff;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--mint-100);
      box-shadow: var(--shadow-sm);
      flex: 1;
      display: flex;
      flex-direction: column;
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .case-small:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .case-small .case-img-wrap {
      aspect-ratio: 4 / 3;
    }
    /* 文章列表 */
    .article-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .article-card {
      background: #fff;
      border-radius: var(--radius);
      padding: 24px;
      border: 1px solid var(--mint-100);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .article-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .article-card h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--gray-900);
      margin-bottom: 8px;
      line-height: 1.5;
    }
    .article-card p {
      font-size: 0.88rem;
      color: var(--gray-600);
      margin-bottom: 14px;
      line-height: 1.6;
    }
    .article-link {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--mint-600);
      transition: color 0.2s;
    }
    .article-link:hover {
      color: var(--mint-800);
    }
    /* 表单 */
    .form-section {
      background: #fff;
      padding: 72px 0;
    }
    .form-wrap {
      max-width: 640px;
      margin: 0 auto;
      background: var(--mint-50);
      border-radius: var(--radius);
      padding: 40px 32px;
      border: 1px solid var(--mint-100);
      box-shadow: var(--shadow-sm);
    }
    .form-wrap h2 {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--gray-900);
      margin-bottom: 8px;
      text-align: center;
    }
    .form-wrap > p {
      text-align: center;
      font-size: 0.95rem;
      color: var(--gray-600);
      margin-bottom: 28px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--gray-800);
      margin-bottom: 6px;
    }
    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--mint-200);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      font-family: inherit;
      background: #fff;
      color: var(--gray-800);
      transition: border-color 0.2s, box-shadow 0.2s;
      outline: none;
    }
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--mint-500);
      box-shadow: 0 0 0 3px rgba(47, 174, 116, 0.12);
    }
    .form-group textarea {
      resize: vertical;
      min-height: 100px;
    }
    .form-submit {
      display: block;
      width: 100%;
      background: var(--mint-600);
      color: #fff;
      padding: 14px;
      border: none;
      border-radius: 40px;
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
      box-shadow: 0 8px 20px rgba(47, 174, 116, 0.3);
    }
    .form-submit:hover {
      background: var(--mint-700);
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(47, 174, 116, 0.4);
    }
    /* 友情链接区 */
    .friend-links {
      padding: 40px 0;
      border-top: 1px solid var(--mint-100);
      background: var(--mint-50);
    }
    .friend-links h3 {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--gray-600);
      margin-bottom: 16px;
      text-align: center;
    }
    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px 24px;
    }
    .friend-links-list a {
      font-size: 0.85rem;
      color: var(--gray-600);
      transition: color 0.2s;
    }
    .friend-links-list a:hover {
      color: var(--mint-600);
    }
    /* 页脚 */
    .footer {
      background: var(--gray-800);
      color: var(--mint-100);
      padding: 48px 0 32px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 32px;
    }
    .footer-brand p {
      font-size: 0.9rem;
      color: var(--gray-300);
      margin-top: 12px;
      line-height: 1.7;
      max-width: 340px;
    }
    .footer h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      font-size: 0.88rem;
      color: var(--gray-300);
      transition: color 0.2s;
    }
    .footer-links a:hover {
      color: var(--mint-300);
    }
    .footer-contact p {
      font-size: 0.88rem;
      color: var(--gray-300);
      margin-bottom: 8px;
    }
    .footer-qr {
      margin-top: 12px;
    }
    .footer-qr img {
      width: 100px;
      height: 100px;
      object-fit: cover;
      border-radius: 8px;
      border: 2px solid var(--mint-700);
    }
    .footer-bottom {
      border-top: 1px solid var(--gray-600);
      padding-top: 24px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      font-size: 0.82rem;
      color: var(--gray-300);
    }
    /* 浮动客服 */
    .float-help {
      position: fixed;
      right: 20px;
      bottom: 80px;
      z-index: 99;
      width: 52px;
      height: 52px;
      background: var(--mint-600);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: 0 8px 20px rgba(47, 174, 116, 0.35);
      transition: transform 0.2s, background 0.2s;
      color: #fff;
      font-size: 1.4rem;
      border: none;
    }
    .float-help:hover {
      transform: scale(1.06);
      background: var(--mint-700);
    }
    .back-top {
      position: fixed;
      right: 20px;
      bottom: 20px;
      z-index: 99;
      width: 44px;
      height: 44px;
      background: #fff;
      border: 1px solid var(--mint-200);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s, box-shadow 0.2s;
      color: var(--mint-700);
      font-size: 1.2rem;
      opacity: 0;
      pointer-events: none;
    }
    .back-top.show {
      opacity: 1;
      pointer-events: auto;
    }
    .back-top:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    /* 滚动动画 */
    .fade-up {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .fade-up.visible {
      opacity: 1;
      transform: translateY(0);
    }
    /* 标签云 */
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }
    .tag-cloud span {
      display: inline-block;
      background: #fff;
      border: 1px solid var(--mint-200);
      color: var(--gray-600);
      font-size: 0.85rem;
      padding: 6px 16px;
      border-radius: 20px;
      transition: background 0.2s, border-color 0.2s, color 0.2s;
    }
    .tag-cloud span:hover {
      background: var(--mint-100);
      border-color: var(--mint-400);
      color: var(--mint-800);
    }
    /* 价格参考 */
    .price-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .price-card {
      background: #fff;
      border-radius: var(--radius);
      padding: 32px 24px;
      border: 1px solid var(--mint-100);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .price-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .price-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--gray-900);
      margin-bottom: 8px;
    }
    .price-card .price {
      font-size: 2rem;
      font-weight: 800;
      color: var(--mint-600);
      margin-bottom: 4px;
    }
    .price-card .price-unit {
      font-size: 0.85rem;
      color: var(--gray-600);
      margin-bottom: 16px;
    }
    .price-card ul {
      text-align: left;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .price-card ul li {
      font-size: 0.88rem;
      color: var(--gray-600);
      padding-left: 20px;
      position: relative;
    }
    .price-card ul li::before {
      content: "✓";
      position: absolute;
      left: 0;
      color: var(--mint-600);
      font-weight: 700;
    }
    /* 服务网络 */
    .network-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .network-item {
      background: #fff;
      border-radius: var(--radius-sm);
      padding: 20px;
      text-align: center;
      border: 1px solid var(--mint-100);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s;
    }
    .network-item:hover {
      transform: translateY(-3px);
    }
    .network-item h4 {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--gray-900);
      margin-bottom: 4px;
    }
    .network-item p {
      font-size: 0.82rem;
      color: var(--gray-600);
    }
    /* 响应式 */
    @media (max-width: 1024px) {
      .grid-3, .reviews-grid, .article-list, .price-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-4, .network-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .case-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .hero h1 {
        font-size: 2.2rem;
      }
    }
    @media (max-width: 768px) {
      .container {
        padding: 0 16px;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 12px 16px;
        box-shadow: var(--shadow-md);
        border-top: 1px solid var(--mint-100);
        gap: 0;
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links a {
        padding: 12px 12px;
        border-radius: 8px;
        font-size: 1rem;
      }
      .mobile-toggle {
        display: block;
      }
      .header-inner {
        position: relative;
      }
      .grid-3, .reviews-grid, .article-list, .price-grid, .grid-4, .network-grid {
        grid-template-columns: 1fr;
      }
      .hero {
        padding: 40px 0 32px;
      }
      .hero h1 {
        font-size: 1.8rem;
      }
      .hero-desc {
        font-size: 1rem;
      }
      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }
      .hero-actions .btn-primary, .hero-actions .btn-outline {
        text-align: center;
      }
      .hero-stats {
        gap: 24px;
      }
      .section {
        padding: 48px 0;
      }
      .section-title {
        font-size: 1.5rem;
      }
      .steps {
        flex-direction: column;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .form-wrap {
        padding: 28px 20px;
      }
      .compare-table {
        min-width: 600px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      .footer-qr img {
        width: 80px;
        height: 80px;
      }
    }