:root {
      --primary: #0066ff;
      --neon-cyan: #00d2ff;
      --neon-green: #00e599;
      --neon-purple: #7928ca;
      --neon-pink: #ff0080;
      --bg-light: #f7f9fc;
      --card-bg: #ffffff;
      --text-main: #111827;
      --text-sub: #4b5563;
      --text-muted: #9ca3af;
      --border-color: #e5e7eb;
      --neon-border: linear-gradient(135deg, #00d2ff 0%, #00e599 50%, #7928ca 100%);
      --shadow-sm: 0 2px 8px rgba(0, 102, 255, 0.06);
      --shadow-lg: 0 12px 30px rgba(0, 102, 255, 0.12);
      --shadow-neon: 0 0 20px rgba(0, 210, 255, 0.25);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-width: 1200px;
      --transition: all 0.25s ease;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      background: radial-gradient(circle at 10% 0%, rgba(0, 210, 255, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 90% 20%, rgba(0, 229, 153, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 50% 80%, rgba(121, 40, 202, 0.05) 0%, transparent 50%),
                  var(--bg-light);
      min-height: 100vh;
      overflow-x: hidden;
    }

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

    ul, ol {
      list-style: none;
    }

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

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(0, 210, 255, 0.2);
      box-shadow: var(--shadow-sm);
    }

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

    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .brand-logo-wrap {
      max-width: 130px;
      display: flex;
      align-items: center;
    }

    .brand-text-name {
      font-size: 1.25rem;
      font-weight: 800;
      background: linear-gradient(90deg, #0066ff, #00d2ff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: 0.5px;
    }

    .nav-wrapper {
      display: flex;
      align-items: center;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-item {
      display: inline-block;
      padding: 8px 12px;
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-main);
      border-radius: var(--radius-sm);
    }

    .nav-item:hover, .nav-item.active {
      color: var(--primary);
      background: rgba(0, 102, 255, 0.05);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 999px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      text-align: center;
    }

    .btn-neon-primary {
      background: linear-gradient(135deg, #0066ff, #00d2ff);
      color: #ffffff;
      box-shadow: 0 4px 15px rgba(0, 102, 255, 0.3);
    }

    .btn-neon-primary:hover {
      box-shadow: 0 6px 20px rgba(0, 210, 255, 0.5);
      transform: translateY(-2px);
    }

    .btn-neon-outline {
      background: #ffffff;
      color: var(--primary);
      border-color: rgba(0, 102, 255, 0.4);
    }

    .btn-neon-outline:hover {
      border-color: var(--neon-cyan);
      background: rgba(0, 210, 255, 0.06);
      transform: translateY(-2px);
    }

    .btn-neon-green {
      background: linear-gradient(135deg, #00a86b, #00e599);
      color: #ffffff;
      box-shadow: 0 4px 15px rgba(0, 229, 153, 0.3);
    }

    .btn-neon-green:hover {
      box-shadow: 0 6px 20px rgba(0, 229, 153, 0.5);
      transform: translateY(-2px);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 6px;
    }

    /* Section 通用规范 */
    .section-spacing {
      padding-top: 70px;
      padding-bottom: 70px;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 46px;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      background: rgba(0, 210, 255, 0.12);
      color: #0077cc;
      border: 1px solid rgba(0, 210, 255, 0.3);
      border-radius: 999px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-sub);
    }

    /* 首屏 Hero（无图片） */
    .hero-section {
      padding: 85px 0 70px;
      background: radial-gradient(circle at 50% 30%, rgba(0, 210, 255, 0.15), transparent 70%);
      position: relative;
    }

    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-highlight-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid rgba(0, 229, 153, 0.4);
      box-shadow: 0 0 15px rgba(0, 229, 153, 0.2);
      font-size: 0.88rem;
      font-weight: 600;
      color: #00875a;
      margin-bottom: 24px;
    }

    .hero-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--neon-green);
      box-shadow: 0 0 8px var(--neon-green);
      animation: pulse 1.8s infinite;
    }

    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.3); }
    }

    .hero-h1 {
      font-size: 2.6rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-sub);
      max-width: 760px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }

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

    .btn-hero-official {
      padding: 14px 34px;
      font-size: 1.1rem;
      background: linear-gradient(135deg, #00d2ff 0%, #0066ff 50%, #7928ca 100%);
      color: #ffffff;
      border-radius: 999px;
      box-shadow: 0 6px 25px rgba(0, 102, 255, 0.35);
      border: 1px solid rgba(255, 255, 255, 0.6);
      font-weight: 700;
    }

    .btn-hero-official:hover {
      box-shadow: 0 8px 30px rgba(0, 210, 255, 0.6);
      transform: translateY(-3px);
    }

    .hero-metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 24px;
      border: 1px solid rgba(0, 210, 255, 0.25);
      box-shadow: var(--shadow-neon);
    }

    .metric-item {
      text-align: center;
      position: relative;
    }

    .metric-item:not(:last-child)::after {
      content: '';
      position: absolute;
      right: 0;
      top: 15%;
      height: 70%;
      width: 1px;
      background: var(--border-color);
    }

    .metric-num {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary);
      background: linear-gradient(90deg, #0066ff, #00d2ff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 4px;
    }

    .metric-lbl {
      font-size: 0.88rem;
      color: var(--text-sub);
    }

    /* 平台核心卡片通用 */
    .card-neon {
      background: var(--card-bg);
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid rgba(229, 231, 235, 0.8);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }

    .card-neon:hover {
      border-color: rgba(0, 210, 255, 0.5);
      box-shadow: 0 8px 24px rgba(0, 210, 255, 0.15);
      transform: translateY(-4px);
    }

    /* 模型生态芯片墙 */
    .models-chip-grid {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 24px;
    }

    .model-chip {
      padding: 6px 14px;
      background: #ffffff;
      border: 1px solid rgba(0, 102, 255, 0.15);
      border-radius: 999px;
      font-size: 0.86rem;
      font-weight: 600;
      color: #1e3a8a;
      transition: var(--transition);
    }

    .model-chip:hover {
      background: linear-gradient(135deg, rgba(0, 210, 255, 0.15), rgba(0, 229, 153, 0.15));
      border-color: var(--neon-cyan);
      transform: translateY(-2px);
    }

    /* 场景与能力网格 */
    .services-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .service-card-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .service-card-tag {
      font-size: 0.75rem;
      padding: 2px 8px;
      border-radius: 4px;
      background: rgba(0, 102, 255, 0.1);
      color: var(--primary);
    }

    .service-card-desc {
      font-size: 0.92rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

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

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

    .step-badge-num {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, #0066ff, #00d2ff);
      color: #ffffff;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 14px;
      box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
    }

    /* 对比评测高光板块 */
    .eval-highlight-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 2px solid transparent;
      background-image: linear-gradient(white, white), linear-gradient(135deg, #00d2ff, #00e599, #7928ca);
      background-origin: border-box;
      background-clip: padding-box, border-box;
      box-shadow: var(--shadow-neon);
      margin-bottom: 30px;
    }

    .eval-score-header {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 20px;
      margin-bottom: 24px;
    }

    .eval-score-val {
      font-size: 2.8rem;
      font-weight: 900;
      color: #0077cc;
      line-height: 1;
    }

    .eval-stars {
      color: #ff9900;
      font-size: 1.3rem;
      margin-top: 4px;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }

    .comparison-table th, .comparison-table td {
      padding: 14px 16px;
      border-bottom: 1px solid var(--border-color);
    }

    .comparison-table th {
      background: rgba(0, 102, 255, 0.04);
      color: var(--text-main);
      font-weight: 700;
    }

    .comparison-table .highlight-col {
      background: rgba(0, 210, 255, 0.05);
      font-weight: 600;
      color: #0055cc;
    }

    /* Token 比价列表 */
    .token-pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

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

    .token-price-tag {
      font-size: 1.6rem;
      font-weight: 800;
      color: #00875a;
      margin: 12px 0;
    }

    /* 案例展示与图文物料 */
    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }

    .gallery-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .gallery-img-wrap {
      width: 100%;
      background: #eef2f6;
      aspect-ratio: 16 / 9;
      overflow: hidden;
    }

    .gallery-img-wrap.square {
      aspect-ratio: 1 / 1;
      max-height: 380px;
    }

    .gallery-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

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

    .gallery-info {
      padding: 20px;
    }

    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .review-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-author-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 16px;
      padding-top: 12px;
      border-top: 1px dashed var(--border-color);
    }

    .author-role {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    .author-name {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    /* FAQ 手风琴 */
    .faq-container-box {
      max-width: 900px;
      margin: 0 auto;
    }

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

    .faq-item.active {
      border-color: var(--neon-cyan);
      box-shadow: 0 4px 15px rgba(0, 210, 255, 0.12);
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 1.02rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      user-select: none;
    }

    .faq-toggle-icon {
      font-size: 1.2rem;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.25s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 24px;
      color: var(--text-sub);
      font-size: 0.92rem;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 24px 20px;
    }

    /* 需求匹配与表单 */
    .contact-wrapper-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 32px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid rgba(0, 210, 255, 0.3);
      box-shadow: var(--shadow-lg);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }

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

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.15);
    }

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

    .contact-info-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 24px;
    }

    .contact-info-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: var(--text-sub);
    }

    .qr-showcase {
      margin-top: 20px;
      padding: 16px;
      background: #f9fbff;
      border-radius: var(--radius-md);
      border: 1px dashed rgba(0, 102, 255, 0.2);
      max-width: 180px;
      text-align: center;
    }

    /* 行业资讯与文章链接 */
    .article-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 14px;
    }

    .article-link-btn {
      padding: 6px 14px;
      border-radius: var(--radius-sm);
      background: #f0f6ff;
      color: var(--primary);
      font-size: 0.86rem;
      border: 1px solid rgba(0, 102, 255, 0.15);
      transition: var(--transition);
    }

    .article-link-btn:hover {
      background: var(--primary);
      color: #ffffff;
    }

    /* 友情链接与页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 24px;
      color: var(--text-sub);
      font-size: 0.9rem;
    }

    .footer-links-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      padding-bottom: 24px;
      margin-bottom: 24px;
      border-bottom: 1px solid var(--border-color);
    }

    .footer-links-grid a {
      color: var(--text-sub);
      padding: 4px 10px;
      border-radius: 4px;
      background: var(--bg-light);
    }

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

    .footer-bottom {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-size: 0.86rem;
      color: var(--text-muted);
    }

    /* 悬浮工具条 */
    .floating-bar {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .floating-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      border: 1px solid rgba(0, 210, 255, 0.3);
      cursor: pointer;
      font-size: 1.1rem;
      transition: var(--transition);
    }

    .floating-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: translateY(-2px);
    }

    /* 响应式断点 */
    @media (max-width: 992px) {
      .services-grid-3, .token-pricing-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-metrics-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .metric-item:nth-child(2)::after {
        display: none;
      }
      .contact-wrapper-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-toggle {
        display: block;
      }
      .nav-wrapper {
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 16px 20px;
        display: none;
        box-shadow: var(--shadow-lg);
      }
      .nav-wrapper.show {
        display: block;
      }
      .nav-links {
        flex-direction: column;
        align-items: flex-start;
      }
      .nav-item {
        width: 100%;
        padding: 10px 0;
      }
      .hero-h1 {
        font-size: 1.9rem;
      }
      .services-grid-3, .token-pricing-grid, .reviews-grid, .gallery-grid, .flow-steps-grid {
        grid-template-columns: 1fr;
      }
      .hero-metrics-bar {
        grid-template-columns: 1fr;
      }
      .metric-item::after {
        display: none !important;
      }
    }