:root {
      --bg-page: #f8fafc;
      --bg-surface: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --holo-cyan: #06b6d4;
      --holo-indigo: #6366f1;
      --holo-pink: #ec4899;
      --holo-amber: #f59e0b;
      --holo-gradient: linear-gradient(135deg, #06b6d4 0%, #6366f1 50%, #ec4899 100%);
      --holo-subtle: linear-gradient(135deg, rgba(6,182,212,0.08) 0%, rgba(99,102,241,0.08) 50%, rgba(236,72,153,0.08) 100%);
      --border-holo: rgba(99, 102, 241, 0.2);
      --card-shadow: 0 10px 25px -5px rgba(99, 102, 241, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --card-shadow-hover: 0 20px 30px -10px rgba(99, 102, 241, 0.18), 0 10px 15px -3px rgba(15, 23, 42, 0.08);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      background-image: 
        radial-gradient(at 0% 0%, rgba(6, 182, 212, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(236, 72, 153, 0.05) 0px, transparent 50%);
      background-attachment: fixed;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(99, 102, 241, 0.15);
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.03);
    }

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

    .brand-logo-area {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

    .brand-logo-area .logo-container {
      height: 40px;
      display: flex;
      align-items: center;
    }

    .brand-logo-area span.brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      background: var(--holo-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

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

    .nav-links a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.95rem;
      font-weight: 500;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
      display: inline-block;
    }

    .nav-links a:hover {
      color: var(--holo-indigo);
      background: rgba(99, 102, 241, 0.06);
    }

    .header-actions {
      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: 0.95rem;
      font-weight: 600;
      text-decoration: none;
      transition: var(--transition);
      cursor: pointer;
      border: 1px solid transparent;
      white-space: nowrap;
    }

    .btn-holo {
      background: var(--holo-gradient);
      color: #ffffff;
      box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    }

    .btn-holo:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
      color: #ffffff;
    }

    .btn-outline {
      border-color: rgba(99, 102, 241, 0.4);
      background: #ffffff;
      color: var(--holo-indigo);
    }

    .btn-outline:hover {
      background: rgba(99, 102, 241, 0.05);
      border-color: var(--holo-indigo);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .mobile-menu-btn span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* 首屏 Hero 无图片纯 CSS 幻彩科技感设计 */
    .hero-section {
      position: relative;
      padding: 80px 0 70px;
      overflow: hidden;
      background: linear-gradient(180deg, rgba(255,255,255,0.7) 0%, rgba(248,250,252,1) 100%);
    }

    .hero-holo-orb-1 {
      position: absolute;
      top: -100px;
      left: 10%;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(6,182,212,0.25) 0%, rgba(99,102,241,0) 70%);
      filter: blur(50px);
      z-index: 0;
      animation: floatSlow 8s ease-in-out infinite alternate;
    }

    .hero-holo-orb-2 {
      position: absolute;
      bottom: -60px;
      right: 12%;
      width: 380px;
      height: 380px;
      background: radial-gradient(circle, rgba(236,72,153,0.2) 0%, rgba(99,102,241,0) 70%);
      filter: blur(60px);
      z-index: 0;
      animation: floatSlow 10s ease-in-out infinite alternate-reverse;
    }

    @keyframes floatSlow {
      0% { transform: translate(0, 0); }
      100% { transform: translate(25px, 20px); }
    }

    .hero-content {
      position: relative;
      z-index: 1;
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid var(--border-holo);
      border-radius: 999px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--holo-indigo);
      margin-bottom: 24px;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1);
    }

    .hero-title {
      font-size: 2.85rem;
      font-weight: 900;
      line-height: 1.25;
      letter-spacing: -1px;
      margin-bottom: 20px;
      color: var(--text-main);
    }

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

    .hero-lead {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }

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

    .btn-hero-primary {
      padding: 14px 36px;
      font-size: 1.1rem;
      background: var(--holo-gradient);
      color: #fff;
      border-radius: var(--radius-md);
      box-shadow: 0 10px 25px -3px rgba(99, 102, 241, 0.4);
      font-weight: 700;
      text-decoration: none;
      transition: var(--transition);
      border: none;
    }

    .btn-hero-primary:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 15px 30px -5px rgba(236, 72, 153, 0.45);
      color: #fff;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .stat-holo-card {
      background: rgba(255, 255, 255, 0.8);
      backdrop-filter: blur(8px);
      padding: 20px 16px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.8);
      box-shadow: var(--card-shadow);
      transition: var(--transition);
    }

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

    .stat-num {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--text-main);
      display: block;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.85rem;
      color: var(--text-light);
      font-weight: 500;
    }

    /* 区域通用结构 */
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--holo-indigo);
      margin-bottom: 8px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 12px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 卡片网格通用 */
    .holo-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 24px;
    }

    .holo-card {
      background: var(--bg-surface);
      border: 1px solid rgba(226, 232, 240, 0.9);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--card-shadow);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .holo-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--card-shadow-hover);
      border-color: var(--border-holo);
    }

    .holo-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--holo-gradient);
      opacity: 0;
      transition: var(--transition);
    }

    .holo-card:hover::before {
      opacity: 1;
    }

    .card-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--holo-subtle);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      color: var(--holo-indigo);
      font-size: 1.3rem;
    }

    .card-title {
      font-size: 1.18rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .card-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 多模型生态徽章区 */
    .models-stream {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 30px;
    }

    .model-chip {
      background: #ffffff;
      border: 1px solid rgba(203, 213, 225, 0.8);
      border-radius: 999px;
      padding: 6px 14px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
      transition: var(--transition);
      box-shadow: 0 2px 5px rgba(0,0,0,0.02);
    }

    .model-chip:hover {
      border-color: var(--holo-indigo);
      background: var(--holo-subtle);
      color: var(--holo-indigo);
      transform: scale(1.05);
    }

    /* 对比评测表格与卡片 */
    .rating-badge-card {
      background: linear-gradient(135deg, rgba(6,182,212,0.06), rgba(99,102,241,0.06));
      border: 1px solid var(--border-holo);
      border-radius: var(--radius-lg);
      padding: 36px;
      text-align: center;
      margin-bottom: 36px;
    }

    .rating-score {
      font-size: 3.5rem;
      font-weight: 900;
      background: var(--holo-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      line-height: 1;
      margin-bottom: 8px;
    }

    .rating-stars {
      color: #f59e0b;
      font-size: 1.4rem;
      letter-spacing: 4px;
      margin-bottom: 8px;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      box-shadow: var(--card-shadow);
      border: 1px solid #e2e8f0;
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

    .comparison-table th, .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #e2e8f0;
    }

    .comparison-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
      font-size: 0.95rem;
    }

    .comparison-table th.highlight-col, .comparison-table td.highlight-col {
      background: rgba(99, 102, 241, 0.04);
      color: var(--holo-indigo);
      font-weight: 700;
    }

    .check-yes {
      color: #10b981;
      font-weight: 700;
    }

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

    .process-step {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      box-shadow: var(--card-shadow);
      position: relative;
    }

    .step-number {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--holo-gradient);
      color: #ffffff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      margin-bottom: 14px;
    }

    /* 媒体与案例展示图片容器 */
    .media-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .media-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      border: 1px solid #e2e8f0;
      transition: var(--transition);
    }

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

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

    .media-img-wrap.square {
      aspect-ratio: 1 / 1;
    }

    .media-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    .media-info {
      padding: 16px;
    }

    .media-title {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .media-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 需求匹配与联系表单 */
    .contact-form-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--card-shadow);
      border: 1px solid var(--border-holo);
      max-width: 800px;
      margin: 0 auto;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

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

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-main);
      background: #f8fafc;
      transition: var(--transition);
    }

    .form-control:focus {
      outline: none;
      border-color: var(--holo-indigo);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    /* FAQ 折叠面板 */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item.active {
      border-color: var(--border-holo);
      box-shadow: var(--card-shadow);
    }

    .faq-trigger {
      width: 100%;
      padding: 18px 24px;
      text-align: left;
      background: none;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: var(--holo-indigo);
    }

    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }

    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
      background: #fafcff;
    }

    .faq-body-content {
      padding: 0 24px 20px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 客户评论卡片 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }

    .review-header {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 14px;
    }

    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--holo-subtle);
      color: var(--holo-indigo);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
    }

    .review-meta h4 {
      font-size: 1rem;
      color: var(--text-main);
    }

    .review-meta p {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* 最新资讯文章链接 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 16px;
    }

    .article-item {
      display: block;
      padding: 16px;
      background: #ffffff;
      border-radius: var(--radius-sm);
      border: 1px solid #e2e8f0;
      text-decoration: none;
      color: var(--text-main);
      font-size: 0.9rem;
      font-weight: 600;
      transition: var(--transition);
    }

    .article-item:hover {
      border-color: var(--holo-indigo);
      transform: translateX(4px);
      color: var(--holo-indigo);
    }

    /* 页脚 */
    footer.site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      font-size: 0.9rem;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 40px;
      padding-bottom: 40px;
      border-bottom: 1px solid #1e293b;
    }

    .footer-col h4 {
      color: #f8fafc;
      font-size: 1rem;
      margin-bottom: 16px;
      font-weight: 700;
    }

    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links-list a {
      color: #94a3b8;
      text-decoration: none;
      transition: var(--transition);
    }

    .footer-links-list a:hover {
      color: #ffffff;
    }

    .friend-links-area {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 10px;
    }

    .friend-links-area a {
      color: #94a3b8;
      text-decoration: none;
      background: rgba(255, 255, 255, 0.05);
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 0.8rem;
      transition: var(--transition);
    }

    .friend-links-area a:hover {
      color: #ffffff;
      background: rgba(255, 255, 255, 0.15);
    }

    .footer-bottom {
      text-align: center;
      color: #64748b;
      font-size: 0.82rem;
    }

    /* 浮动客服入口 */
    .float-service-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-holo);
      box-shadow: 0 4px 15px rgba(0,0,0,0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: var(--transition);
      position: relative;
    }

    .float-btn:hover {
      transform: scale(1.08);
      background: var(--holo-subtle);
    }

    .float-qr-popup {
      position: absolute;
      right: 60px;
      bottom: 0;
      width: 170px;
      padding: 12px;
      background: #ffffff;
      border-radius: var(--radius-md);
      box-shadow: 0 10px 25px rgba(0,0,0,0.15);
      display: none;
      text-align: center;
      font-size: 0.8rem;
      color: var(--text-main);
      border: 1px solid #e2e8f0;
    }

    .float-qr-popup img {
      width: 100%;
      height: auto;
      display: block;
      margin-bottom: 6px;
      border-radius: 4px;
    }

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

    /* 响应式适配 */
    @media (max-width: 992px) {
      .nav-links {
        display: none;
      }

      .mobile-menu-btn {
        display: block;
      }

      .mobile-nav-panel {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid #e2e8f0;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }

      .mobile-nav-panel.active {
        display: block;
      }

      .mobile-nav-panel ul {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 12px;
      }

      .hero-title {
        font-size: 2.1rem;
      }

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

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

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

    @media (max-width: 640px) {
      .hero-title {
        font-size: 1.75rem;
      }

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

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

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