:root {
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-glass: rgba(255, 255, 255, 0.85);
      --text-main: #0f172a;
      --text-muted: #475569;
      --primary: #4338ca;
      --primary-hover: #3730a3;
      --neon-cyan: #06b6d4;
      --neon-magenta: #ec4899;
      --neon-violet: #8b5cf6;
      --neon-amber: #f59e0b;
      --border-subtle: #e2e8f0;
      --border-glow: rgba(99, 102, 241, 0.35);
      --shadow-soft: 0 4px 20px -2px rgba(99, 102, 241, 0.08);
      --shadow-neon: 0 10px 30px -5px rgba(236, 72, 153, 0.15), 0 0 15px 0 rgba(6, 182, 212, 0.15);
      --container-w: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
    }
    body {
      background-color: var(--bg-main);
      background-image: 
        radial-gradient(circle at 15% 10%, rgba(6, 182, 212, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 85% 25%, rgba(236, 72, 153, 0.08) 0%, transparent 45%),
        radial-gradient(circle at 50% 70%, rgba(139, 92, 246, 0.06) 0%, transparent 50%);
      background-repeat: no-repeat;
      background-attachment: fixed;
      line-height: 1.6;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }
    .site-container {
      width: 100%;
      max-width: var(--container-w);
      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;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      background: rgba(255, 255, 255, 0.9);
      border-bottom: 1px solid var(--border-subtle);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }
    .nav-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      min-width: 180px;
    }
    .brand-box img {
      max-height: 40px;
      width: auto;
      object-fit: contain;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li {
      margin: 0;
      padding: 0;
    }
    .nav-links a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: 6px;
    }
    .nav-links a:hover {
      color: var(--primary);
      background: rgba(99, 102, 241, 0.06);
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-neon-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      font-size: 14px;
      font-weight: 600;
      color: #ffffff;
      background: linear-gradient(135deg, #06b6d4, #4338ca);
      border-radius: 9999px;
      box-shadow: 0 4px 12px rgba(6, 182, 212, 0.35);
      border: none;
      cursor: pointer;
    }
    .btn-neon-action:hover {
      box-shadow: 0 6px 18px rgba(6, 182, 212, 0.5);
      transform: translateY(-1px);
    }
    .menu-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }
    .menu-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--text-main);
      transition: 0.3s;
    }

    /* Hero 首屏 (无图规范) */
    .hero-section {
      padding: 80px 0 60px;
      text-align: center;
      position: relative;
    }
    .badge-neon {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background: linear-gradient(90deg, rgba(6, 182, 212, 0.12), rgba(236, 72, 153, 0.12));
      border: 1px solid var(--border-glow);
      border-radius: 9999px;
      margin-bottom: 24px;
    }
    .hero-h1 {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-desc {
      max-width: 820px;
      margin: 0 auto 36px;
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }
    .btn-hero-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 34px;
      font-size: 16px;
      font-weight: 700;
      color: #ffffff;
      background: linear-gradient(135deg, #06b6d4 0%, #6366f1 50%, #ec4899 100%);
      border-radius: 9999px;
      box-shadow: 0 8px 25px rgba(236, 72, 153, 0.35);
      border: none;
    }
    .btn-hero-primary:hover {
      box-shadow: 0 10px 30px rgba(6, 182, 212, 0.5);
      transform: translateY(-2px);
    }
    .btn-hero-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 30px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      background: #ffffff;
      border: 1px solid var(--border-glow);
      border-radius: 9999px;
      box-shadow: var(--shadow-soft);
    }
    .btn-hero-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: left;
    }
    .stat-card {
      background: var(--bg-glass);
      padding: 24px;
      border-radius: 16px;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-soft);
      position: relative;
      overflow: hidden;
    }
    .stat-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: linear-gradient(to bottom, var(--neon-cyan), var(--neon-magenta));
    }
    .stat-label {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 6px;
    }
    .stat-value {
      font-size: 28px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .stat-tag {
      font-size: 12px;
      color: #059669;
      font-weight: 600;
      margin-top: 4px;
    }

    /* 模块通用样式 */
    .content-section {
      padding: 64px 0;
    }
    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 44px;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--neon-magenta);
      margin-bottom: 8px;
    }
    .section-h2 {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .section-sub {
      font-size: 15px;
      color: var(--text-muted);
    }

    /* 平台介绍 */
    .platform-intro-box {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: 20px;
      padding: 40px;
      box-shadow: var(--shadow-soft);
    }
    .intro-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 30px;
    }
    .intro-item {
      padding: 20px;
      background: var(--bg-main);
      border-radius: 12px;
      border-left: 3px solid var(--neon-cyan);
    }
    .intro-item h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .intro-item p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 服务能力卡片 */
    .cards-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: 16px;
      padding: 24px;
      transition: all 0.25s ease;
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .service-card:hover {
      transform: translateY(-4px);
      border-color: var(--neon-cyan);
      box-shadow: 0 12px 28px rgba(6, 182, 212, 0.12);
    }
    .service-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .service-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--neon-magenta);
      display: inline-block;
    }
    .service-desc {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
      margin-bottom: 16px;
    }
    .service-pill {
      font-size: 11.5px;
      font-weight: 600;
      color: var(--primary);
      background: rgba(99, 102, 241, 0.08);
      padding: 4px 10px;
      border-radius: 6px;
      align-self: flex-start;
    }

    /* 标签云 (支持模型) */
    .models-cloud {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: 16px;
      padding: 28px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      box-shadow: var(--shadow-soft);
    }
    .model-chip {
      display: inline-block;
      padding: 7px 16px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      background: var(--bg-main);
      border: 1px solid var(--border-subtle);
      border-radius: 9999px;
      transition: 0.2s;
    }
    .model-chip:hover {
      border-color: var(--neon-cyan);
      color: var(--primary);
      background: rgba(6, 182, 212, 0.05);
    }

    /* 标准制作流程 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
    }
    .process-step {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: 14px;
      padding: 22px 18px;
      position: relative;
      box-shadow: var(--shadow-soft);
    }
    .process-index {
      font-size: 24px;
      font-weight: 800;
      color: var(--neon-cyan);
      margin-bottom: 8px;
      line-height: 1;
    }
    .process-step h3 {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .process-step p {
      font-size: 12.5px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 案例中心图文卡片 */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .showcase-card {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: 16px;
      overflow: hidden;
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
    }
    .media-container {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #f1f5f9;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .media-container img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .showcase-card:hover .media-container img {
      transform: scale(1.03);
    }
    .showcase-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .showcase-body h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .showcase-body p {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 14px;
      flex-grow: 1;
    }

    /* 对比评测规范区域 */
    .compare-wrapper {
      background: #ffffff;
      border-radius: 20px;
      border: 1px solid var(--border-subtle);
      padding: 36px;
      box-shadow: var(--shadow-neon);
    }
    .rating-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.08), rgba(236, 72, 153, 0.08));
      border: 1px solid var(--border-glow);
      padding: 20px 28px;
      border-radius: 14px;
      margin-bottom: 28px;
    }
    .rating-title-group h3 {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
    }
    .rating-title-group p {
      font-size: 13.5px;
      color: var(--text-muted);
    }
    .rating-scores {
      display: flex;
      align-items: baseline;
      gap: 16px;
    }
    .stars {
      color: #f59e0b;
      font-size: 18px;
      letter-spacing: 2px;
    }
    .score-num {
      font-size: 36px;
      font-weight: 900;
      color: var(--primary);
    }
    .score-max {
      font-size: 14px;
      color: var(--text-muted);
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .compare-table th, .compare-table td {
      padding: 14px 16px;
      border-bottom: 1px solid var(--border-subtle);
    }
    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }
    .highlight-col {
      background: rgba(99, 102, 241, 0.04);
      font-weight: 600;
      color: var(--primary);
    }

    /* Token 比价 */
    .token-table-wrap {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: 16px;
      padding: 24px;
      box-shadow: var(--shadow-soft);
      overflow-x: auto;
    }

    /* 表单与需求匹配 */
    .match-container {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 32px;
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: 20px;
      padding: 40px;
      box-shadow: var(--shadow-soft);
    }
    .match-info h3 {
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .match-info p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .agent-box {
      background: linear-gradient(135deg, rgba(236, 72, 153, 0.06), rgba(99, 102, 241, 0.06));
      border: 1px dashed var(--neon-magenta);
      border-radius: 12px;
      padding: 20px;
    }
    .agent-box h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--neon-magenta);
    }
    .agent-box p {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 0;
    }
    .custom-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group label {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-subtle);
      border-radius: 8px;
      font-size: 14px;
      color: var(--text-main);
      background: #fdfdfd;
      outline: none;
      transition: 0.2s;
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }
    .btn-submit {
      width: 100%;
      padding: 12px;
      font-size: 15px;
      font-weight: 700;
      color: #ffffff;
      background: linear-gradient(135deg, var(--neon-cyan), var(--primary));
      border: none;
      border-radius: 8px;
      cursor: pointer;
      box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
      transition: 0.2s;
    }
    .btn-submit:hover {
      box-shadow: 0 6px 20px rgba(6, 182, 212, 0.45);
    }

    /* 客户评论 6 条 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: 16px;
      padding: 24px;
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-text {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      position: relative;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-subtle);
      padding-top: 14px;
    }
    .user-avatar-badge {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
    }
    .user-meta-name {
      font-size: 14px;
      font-weight: 700;
    }
    .user-meta-role {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* FAQ 折叠面板 */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: 12px;
      overflow: hidden;
      transition: 0.2s;
    }
    .faq-question {
      width: 100%;
      text-align: left;
      padding: 16px 20px;
      background: none;
      border: none;
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .faq-icon {
      font-size: 18px;
      color: var(--neon-cyan);
      transition: transform 0.25s ease;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: #fafbfc;
      padding: 0 20px;
    }
    .faq-answer p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.6;
      padding: 14px 0;
    }
    .faq-item.active {
      border-color: var(--neon-cyan);
      box-shadow: 0 4px 15px rgba(6, 182, 212, 0.08);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--neon-magenta);
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
    }

    /* 行业资讯与文章 */
    .articles-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: 16px;
      padding: 24px;
      box-shadow: var(--shadow-soft);
    }
    .article-links-list {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 14px;
      margin-top: 14px;
      list-style: none;
    }
    .article-links-list a {
      display: block;
      padding: 12px 16px;
      background: var(--bg-main);
      border-radius: 8px;
      border: 1px solid var(--border-subtle);
      font-size: 13px;
      color: var(--text-muted);
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }
    .article-links-list a:hover {
      color: var(--primary);
      border-color: var(--neon-cyan);
      background: #ffffff;
    }

    /* 底部统一规范 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 56px 0 32px;
      border-top: 1px solid #1e293b;
      font-size: 13.5px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1.2fr 1fr;
      gap: 36px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-col p {
      line-height: 1.7;
      margin-bottom: 10px;
    }
    .footer-col a {
      color: #94a3b8;
    }
    .footer-col a:hover {
      color: var(--neon-cyan);
    }
    .footer-qr-wrap {
      display: flex;
      flex-direction: column;
      gap: 8px;
      align-items: flex-start;
    }
    .footer-qr-wrap img {
      width: 100px;
      height: 100px;
      background: #ffffff;
      border-radius: 8px;
      padding: 4px;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 12.5px;
    }
    .footer-friendly-links {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    /* 浮动客服挂件 */
    .float-service {
      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;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
      border: 1px solid var(--border-glow);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary);
      position: relative;
    }
    .float-btn:hover {
      background: var(--neon-cyan);
      color: #ffffff;
    }
    .float-qr-card {
      position: absolute;
      right: 58px;
      bottom: 0;
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-neon);
      padding: 12px;
      border-radius: 12px;
      display: none;
      width: 140px;
      text-align: center;
    }
    .float-qr-card img {
      width: 100%;
      height: auto;
      border-radius: 6px;
      margin-bottom: 6px;
    }
    .float-qr-card span {
      font-size: 11px;
      color: var(--text-main);
      font-weight: 600;
    }
    .float-btn:hover .float-qr-card {
      display: block;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .cards-grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(3, 1fr);
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .showcase-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 16px 20px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
        border-bottom: 1px solid var(--border-subtle);
      }
      .nav-links.active {
        display: flex;
      }
      .menu-toggle {
        display: flex;
      }
      .hero-h1 {
        font-size: 28px;
      }
      .hero-stats-grid,
      .intro-grid,
      .cards-grid-4,
      .process-timeline,
      .showcase-grid,
      .reviews-grid,
      .match-container,
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .rating-banner {
        flex-direction: column;
        align-items: flex-start;
      }
      .site-header {
        padding: 0 10px;
      }
    }