:root {
      --primary: #6366f1;
      --primary-dark: #4f46e5;
      --secondary: #ec4899;
      --accent: #06b6d4;
      --bg-main: #f8fafc;
      --bg-card: rgba(255, 255, 255, 0.85);
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: rgba(226, 232, 240, 0.8);
      --holo-gradient: linear-gradient(135deg, #ff7eb3 0%, #ff758c 20%, #70a6ff 60%, #54e3d6 100%);
      --holo-border: linear-gradient(135deg, rgba(255, 126, 179, 0.4), rgba(112, 166, 255, 0.4), rgba(84, 227, 214, 0.4));
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-holo: 0 10px 25px -5px rgba(99, 102, 241, 0.15), 0 8px 10px -6px rgba(236, 72, 153, 0.1);
      --container-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
    }

    body {
      background: radial-gradient(circle at 10% 10%, rgba(255, 126, 179, 0.06) 0%, transparent 40%),
                  radial-gradient(circle at 90% 20%, rgba(84, 227, 214, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 50% 80%, rgba(112, 166, 255, 0.06) 0%, transparent 50%),
                  var(--bg-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

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

    .holo-tag {
      display: inline-block;
      padding: 4px 12px;
      font-size: 13px;
      font-weight: 600;
      border-radius: 9999px;
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
      color: var(--primary-dark);
      border: 1px solid rgba(99, 102, 241, 0.2);
      margin-bottom: 12px;
    }

    .section-head {
      text-align: center;
      margin-bottom: 48px;
    }

    .section-head h2 {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 12px;
    }

    .section-head p {
      color: var(--text-muted);
      font-size: 16px;
      max-width: 680px;
      margin: 0 auto;
    }

    /* 顶部导航 */
    header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: all 0.3s ease;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .logo-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .logo-area img {
      max-height: 40px;
      width: auto;
      display: block;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      transition: color 0.2s, background-color 0.2s;
    }

    .nav-links li a:hover {
      color: var(--primary);
      background-color: rgba(99, 102, 241, 0.05);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 600;
      padding: 10px 20px;
      border-radius: var(--radius-md);
      transition: all 0.25s ease;
      cursor: pointer;
      border: none;
      text-align: center;
    }

    .btn-holo {
      background: var(--holo-gradient);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(236, 72, 153, 0.3);
    }

    .btn-holo:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
    }

    .btn-outline {
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid var(--border-color);
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(99, 102, 241, 0.04);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    .mobile-menu-btn svg {
      width: 24px;
      height: 24px;
      stroke: var(--text-main);
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 70px 0 60px;
      text-align: center;
      position: relative;
    }

    .hero-title {
      font-size: 40px;
      line-height: 1.25;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-title span {
      background: var(--holo-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 960px;
      margin: 0 auto;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s;
    }

    .stat-card:hover {
      transform: translateY(-3px);
      border-color: rgba(99, 102, 241, 0.4);
    }

    .stat-value {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary-dark);
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 平台矩阵 */
    .models-banner {
      margin-top: 40px;
      padding: 24px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .models-title {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 16px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .model-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }

    .model-tag-item {
      font-size: 12px;
      padding: 4px 10px;
      background: #f1f5f9;
      color: #334155;
      border-radius: 6px;
      font-weight: 500;
    }

    /* 通用Section */
    section {
      padding: 80px 0;
      border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    }

    /* 核心服务网格 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
      backdrop-filter: blur(8px);
    }

    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-holo);
      border-color: rgba(99, 102, 241, 0.4);
    }

    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-md);
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      font-size: 20px;
      color: var(--primary);
    }

    .card-title {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .card-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 场景分类网格 */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 16px;
    }

    .scene-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 18px;
      transition: all 0.2s;
    }

    .scene-item:hover {
      border-color: var(--primary);
      background: rgba(255, 255, 255, 0.95);
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.08);
    }

    .scene-item h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .scene-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比评测表格 */
    .rating-banner {
      background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #db2777 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      margin-bottom: 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

    .rating-info h3 {
      font-size: 26px;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .rating-info p {
      opacity: 0.9;
      font-size: 15px;
      max-width: 600px;
    }

    .rating-score-box {
      text-align: center;
      background: rgba(255, 255, 255, 0.15);
      padding: 16px 28px;
      border-radius: var(--radius-md);
      backdrop-filter: blur(8px);
    }

    .rating-stars {
      color: #fbbf24;
      font-size: 20px;
      margin-bottom: 4px;
    }

    .rating-score {
      font-size: 32px;
      font-weight: 900;
      line-height: 1;
    }

    .rating-score span {
      font-size: 16px;
      font-weight: 500;
      opacity: 0.8;
    }

    .compare-table-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      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: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }

    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }

    .compare-table td:nth-child(2) {
      font-weight: 600;
      color: var(--primary-dark);
      background: rgba(99, 102, 241, 0.03);
    }

    /* 案例图文展示 */
    .case-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .case-card .img-container {
      width: 100%;
      background: #f1f5f9;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .case-card .img-container img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

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

    .case-info {
      padding: 24px;
    }

    .case-info h4 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .case-info p {
      font-size: 14px;
      color: var(--text-muted);
    }

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

    .process-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }

    .process-number {
      display: inline-block;
      font-size: 20px;
      font-weight: 800;
      color: var(--secondary);
      margin-bottom: 12px;
    }

    .process-card h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .process-card p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 需求匹配表单与联系 */
    .form-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-holo);
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background: #f8fafc;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
    }

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

    .contact-card-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 18px;
      font-size: 15px;
    }

    .contact-item strong {
      color: var(--text-main);
      width: 90px;
    }

    .qr-container {
      margin-top: 20px;
      padding: 16px;
      background: #f8fafc;
      border-radius: var(--radius-md);
      text-align: center;
      border: 1px dashed var(--border-color);
    }

    .qr-container img {
      max-width: 130px;
      height: auto;
      border-radius: 6px;
      display: block;
      margin: 0 auto 8px;
    }

    /* 用户评论 */
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-content {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      position: relative;
    }

    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .testimonial-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--holo-gradient);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      font-weight: 700;
      font-size: 14px;
    }

    .user-info h5 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }

    .user-info span {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* FAQ 折叠面板 */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color 0.2s;
    }

    .faq-item.active {
      border-color: var(--primary);
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }

    .faq-icon {
      font-size: 18px;
      color: var(--text-muted);
      transition: transform 0.2s;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }

    .faq-answer {
      padding: 0 24px 18px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      display: none;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    /* 文章与资讯链接 */
    .article-links-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 12px;
      margin-top: 20px;
    }

    .article-link-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 14px 16px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: all 0.2s;
    }

    .article-link-card:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(99, 102, 241, 0.03);
    }

    /* 友情链接与页脚 */
    footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 30px;
      color: var(--text-muted);
    }

    .footer-links-row {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 24px;
      padding-bottom: 24px;
      border-bottom: 1px solid #f1f5f9;
      font-size: 13px;
    }

    .footer-links-row a {
      color: var(--text-muted);
      transition: color 0.2s;
    }

    .footer-links-row a:hover {
      color: var(--primary);
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
    }

    /* 浮动客服 */
    .float-kefu {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--text-main);
      transition: all 0.2s;
      position: relative;
    }

    .float-btn:hover {
      transform: scale(1.08);
      border-color: var(--primary);
      color: var(--primary);
    }

    .float-qr-pop {
      position: absolute;
      right: 56px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-md);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
      border: 1px solid var(--border-color);
      display: none;
      width: 140px;
      text-align: center;
    }

    .float-btn:hover .float-qr-pop {
      display: block;
    }

    .float-qr-pop img {
      width: 100%;
      height: auto;
      display: block;
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .process-grid { grid-template-columns: repeat(2, 1fr); }
      .nav-links { display: none; }
      .mobile-menu-btn { display: block; }
      .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-holo);
      }
    }

    @media (max-width: 640px) {
      .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
      .hero-stats-grid { grid-template-columns: 1fr; }
      .process-grid { grid-template-columns: 1fr; }
      .hero-title { font-size: 28px; }
      .section-head h2 { font-size: 24px; }
      .rating-banner { flex-direction: column; text-align: center; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }