:root {
      --primary-color: #6b21a8;
      --primary-light: #9333ea;
      --accent-magenta: #c026d3;
      --accent-pink: #ec4899;
      --bg-light: #fcfaff;
      --bg-section: #f5f0fb;
      --card-bg: #ffffff;
      --text-main: #1e1b4b;
      --text-muted: #4b5563;
      --border-color: #e9d5ff;
      --shadow-sm: 0 4px 12px rgba(107, 33, 168, 0.05);
      --shadow-md: 0 10px 25px rgba(107, 33, 168, 0.08);
      --shadow-lg: 0 20px 40px rgba(107, 33, 168, 0.12);
      --radius-md: 12px;
      --radius-lg: 18px;
      --transition: all 0.28s ease;
    }

    * {
      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, "Noto Sans", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
    }

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

    /* 统一居中容器体系 */
    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 头部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }

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

    .brand-logo-img {
      max-height: 42px;
      display: flex;
      align-items: center;
    }

    .brand-title {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary-color);
      letter-spacing: -0.5px;
    }

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

    .nav-links li a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 14px;
      border-radius: 6px;
      transition: var(--transition);
      display: block;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary-light);
      background-color: #f3e8ff;
    }

    .nav-actions {
      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: 30px;
      transition: var(--transition);
      cursor: pointer;
      border: 1px solid transparent;
      text-align: center;
    }

    .btn-primary {
      background: linear-gradient(135deg, #7c3aed 0%, #c026d3 100%);
      color: #ffffff;
      box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(192, 38, 211, 0.4);
      color: #ffffff;
    }

    .btn-outline {
      border-color: #c084fc;
      color: var(--primary-color);
      background: #ffffff;
    }

    .btn-outline:hover {
      background-color: #f3e8ff;
      transform: translateY(-2px);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--primary-color);
      cursor: pointer;
    }

    /* 首屏 Hero - 严格不出现任何图片 */
    .hero-section {
      padding: 80px 0 60px;
      background: radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.08) 0%, rgba(252, 250, 255, 1) 70%),
                  radial-gradient(circle at 10% 80%, rgba(124, 58, 237, 0.07) 0%, rgba(252, 250, 255, 1) 60%);
      border-bottom: 1px solid var(--border-color);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      padding: 6px 16px;
      background: #f3e8ff;
      border: 1px solid #d8b4fe;
      color: #6b21a8;
      border-radius: 20px;
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 20px;
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.25;
      color: #1e1b4b;
      margin-bottom: 22px;
      letter-spacing: -0.5px;
    }

    .hero-highlight {
      color: #7c3aed;
      background: linear-gradient(135deg, #7c3aed 0%, #db2777 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 1.12rem;
      color: #4b5563;
      margin-bottom: 34px;
      line-height: 1.7;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }

    .hero-metrics {
      display: flex;
      gap: 28px;
      padding-top: 24px;
      border-top: 1px dashed var(--border-color);
    }

    .metric-item-num {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--primary-color);
    }

    .metric-item-label {
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 首屏纯代码视觉面板 */
    .hero-visual-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-lg);
      position: relative;
    }

    .card-terminal-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid #f3e8ff;
      padding-bottom: 14px;
      margin-bottom: 20px;
    }

    .terminal-dots {
      display: flex;
      gap: 6px;
    }

    .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }

    .dot-1 { background-color: #f43f5e; }
    .dot-2 { background-color: #fbbf24; }
    .dot-3 { background-color: #10b981; }

    .terminal-title {
      font-size: 0.85rem;
      font-weight: 600;
      color: #7c3aed;
    }

    .engine-stack-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .engine-stack-item {
      padding: 12px 16px;
      background: #faf5ff;
      border-radius: 10px;
      border: 1px solid #f3e8ff;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: var(--transition);
    }

    .engine-stack-item:hover {
      background: #f3e8ff;
      border-color: #d8b4fe;
    }

    .engine-name {
      font-weight: 700;
      color: var(--primary-color);
      font-size: 0.95rem;
    }

    .engine-status {
      font-size: 0.82rem;
      color: #059669;
      background: #d1fae5;
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
    }

    /* 模块通用样式 */
    .section-block {
      padding: 85px 0;
    }

    .section-alt {
      background-color: var(--bg-section);
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 52px;
    }

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

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.35;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 卡片网格 */
    .card-grid {
      display: grid;
      gap: 24px;
    }

    .grid-3 {
      grid-template-columns: repeat(3, 1fr);
    }

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

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

    .feature-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: #c084fc;
    }

    .feature-icon-badge {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: linear-gradient(135deg, #f3e8ff 0%, #fce7f3 100%);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
      border: 1px solid #e9d5ff;
    }

    .feature-title {
      font-size: 1.22rem;
      font-weight: 700;
      color: #1e1b4b;
      margin-bottom: 12px;
    }

    .feature-text {
      font-size: 0.94rem;
      color: #4b5563;
      line-height: 1.68;
      flex-grow: 1;
    }

    /* 平台矩阵标签池 */
    .model-tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 36px;
    }

    .model-tag {
      background: #ffffff;
      border: 1px solid #d8b4fe;
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.88rem;
      font-weight: 600;
      color: #6b21a8;
      transition: var(--transition);
    }

    .model-tag:hover {
      background: #7c3aed;
      color: #ffffff;
      border-color: #7c3aed;
    }

    /* 图文与素材展示容器 (非首屏) */
    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .media-img-wrap {
      width: 100%;
      overflow: hidden;
      background: #f3e8ff;
    }

    .media-img-wrap img {
      width: 100%;
      height: auto;
      display: block;
      transition: var(--transition);
      object-fit: cover;
    }

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

    .media-content {
      padding: 24px;
    }

    /* 对比评测高亮模块 */
    .eval-highlight-box {
      background: linear-gradient(135deg, #ffffff 0%, #faf5ff 100%);
      border: 2px solid #c084fc;
      border-radius: var(--radius-lg);
      padding: 36px;
      margin-bottom: 40px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      box-shadow: var(--shadow-md);
      gap: 24px;
    }

    .eval-score-wrap {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .eval-score-circle {
      width: 86px;
      height: 86px;
      border-radius: 50%;
      background: linear-gradient(135deg, #7c3aed 0%, #ec4899 100%);
      color: #ffffff;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      box-shadow: 0 6px 18px rgba(124, 58, 237, 0.35);
    }

    .eval-score-num {
      font-size: 1.9rem;
      font-weight: 800;
      line-height: 1;
    }

    .eval-score-max {
      font-size: 0.75rem;
      opacity: 0.85;
    }

    .eval-meta-title {
      font-size: 1.4rem;
      font-weight: 800;
      color: #1e1b4b;
      margin-bottom: 6px;
    }

    .eval-stars {
      color: #f59e0b;
      font-size: 1.25rem;
      letter-spacing: 2px;
    }

    /* 评测表格 */
    .table-responsive {
      width: 100%;
      overflow-x: auto;
      border-radius: var(--radius-md);
      background: #ffffff;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

    .eval-table th,
    .eval-table td {
      padding: 18px 22px;
      border-bottom: 1px solid #f3e8ff;
      font-size: 0.94rem;
    }

    .eval-table th {
      background: #fcf9ff;
      color: #1e1b4b;
      font-weight: 700;
    }

    .eval-table tr:last-child td {
      border-bottom: none;
    }

    .col-highlight {
      background: #faf5ff;
      font-weight: 600;
      color: #6b21a8;
    }

    /* 标准流程时间线 */
    .step-list {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

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

    .step-badge {
      display: inline-block;
      width: 32px;
      height: 32px;
      background: #7c3aed;
      color: #ffffff;
      font-weight: 700;
      text-align: center;
      line-height: 32px;
      border-radius: 50%;
      margin-bottom: 14px;
    }

    /* 折叠面板 FAQ */
    .faq-wrapper {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

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

    .faq-question {
      width: 100%;
      padding: 20px 24px;
      text-align: left;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .faq-arrow {
      color: #7c3aed;
      font-weight: bold;
      transition: transform 0.28s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      padding-bottom: 20px;
    }

    /* 评论卡片 */
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
    }

    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-top: 18px;
    }

    .user-avatar-text {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #c084fc, #7c3aed);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.1rem;
    }

    .user-info-name {
      font-weight: 700;
      color: var(--text-main);
    }

    .user-info-role {
      font-size: 0.82rem;
      color: #64748b;
    }

    /* 表单组件 */
    .form-container-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
      max-width: 820px;
      margin: 0 auto;
    }

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

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .form-group.full-width {
      grid-column: span 2;
    }

    .form-label {
      font-size: 0.92rem;
      font-weight: 600;
      color: #334155;
    }

    .form-input,
    .form-select,
    .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #d1d5db;
      border-radius: 8px;
      font-size: 0.95rem;
      color: #1e293b;
      background: #ffffff;
      transition: var(--transition);
      outline: none;
    }

    .form-input:focus,
    .form-select:focus,
    .form-textarea:focus {
      border-color: #7c3aed;
      box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
    }

    .form-textarea {
      resize: vertical;
      min-height: 120px;
    }

    /* 资讯板块列表 */
    .article-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 24px;
    }

    .article-chip-link {
      display: inline-flex;
      align-items: center;
      padding: 10px 18px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      font-size: 0.92rem;
      font-weight: 600;
      color: #6b21a8;
      transition: var(--transition);
    }

    .article-chip-link:hover {
      background: #7c3aed;
      color: #ffffff;
      border-color: #7c3aed;
    }

    /* 友情链接与页脚 */
    .site-footer {
      background-color: #f8fafc;
      border-top: 1px solid #e2e8f0;
      padding: 60px 0 30px;
      color: #334155;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 18px;
    }

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

    .footer-links-col li a {
      color: #475569;
      font-size: 0.92rem;
      transition: var(--transition);
    }

    .footer-links-col li a:hover {
      color: #7c3aed;
    }

    .footer-qr-block {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-qr-img {
      width: 110px;
      height: 110px;
      background: #ffffff;
      padding: 4px;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      overflow: hidden;
    }

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

    .friendship-links-wrap {
      border-top: 1px solid #e2e8f0;
      padding: 24px 0;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 14px;
      font-size: 0.88rem;
    }

    .friendship-label {
      font-weight: 700;
      color: #0f172a;
    }

    .friendship-links-wrap a {
      color: #64748b;
      transition: var(--transition);
    }

    .friendship-links-wrap a:hover {
      color: #7c3aed;
    }

    .footer-bottom-bar {
      border-top: 1px solid #e2e8f0;
      padding-top: 20px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 悬浮客服面板 */
    .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: linear-gradient(135deg, #7c3aed, #c026d3);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 6px 18px rgba(124, 58, 237, 0.4);
      cursor: pointer;
      border: none;
      font-size: 1.2rem;
      transition: var(--transition);
    }

    .float-btn:hover {
      transform: scale(1.1);
    }

    .qr-popup-box {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 14px;
      border-radius: 12px;
      box-shadow: var(--shadow-lg);
      display: none;
      text-align: center;
      width: 160px;
    }

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

    .float-service-widget:hover .qr-popup-box {
      display: block;
    }

    /* 响应式媒体查询 */
    @media (max-width: 992px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }

      .grid-3, .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }

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

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

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }

      .nav-links {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        align-items: stretch;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }

      .nav-links.show {
        display: flex;
      }

      .nav-links li a {
        padding: 14px 24px;
        border-radius: 0;
        border-bottom: 1px solid #faf5ff;
      }

      .grid-3, .grid-4, .grid-2 {
        grid-template-columns: 1fr;
      }

      .step-list {
        grid-template-columns: 1fr;
      }

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

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

      .hero-title {
        font-size: 2rem;
      }

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