:root {
      --primary: #4f46e5;
      --primary-light: #6366f1;
      --accent-pink: #ec4899;
      --accent-cyan: #06b6d4;
      --accent-orange: #f97316;
      --accent-gradient: linear-gradient(135deg, #4f46e5 0%, #ec4899 50%, #f97316 100%);
      --bg-gradient: linear-gradient(180deg, #fdf4ff 0%, #f0fdf4 35%, #eef2ff 70%, #faf5ff 100%);
      --text-main: #0f172a;
      --text-sub: #475569;
      --text-muted: #64748b;
      --card-bg: #ffffff;
      --card-border: rgba(99, 102, 241, 0.12);
      --card-shadow: 0 10px 30px -5px rgba(79, 70, 229, 0.08), 0 4px 12px -2px rgba(0, 0, 0, 0.03);
      --card-hover-shadow: 0 20px 40px -10px rgba(236, 72, 153, 0.2);
      --radius: 16px;
      --radius-sm: 8px;
      --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, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background: var(--bg-gradient);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      min-height: 100vh;
    }

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

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(99, 102, 241, 0.1);
      transition: var(--transition);
    }

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

    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .brand-logo-wrap img {
      height: 38px;
      width: auto;
      display: block;
    }

    .brand-title-text {
      font-size: 20px;
      font-weight: 800;
      background: var(--accent-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 li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-sub);
      transition: var(--transition);
      border-radius: var(--radius-sm);
    }

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

    .nav-cta-group {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .btn-nav-primary {
      padding: 8px 18px;
      background: var(--accent-gradient);
      color: #ffffff !important;
      font-size: 14px;
      font-weight: 700;
      border-radius: 30px;
      box-shadow: 0 4px 12px rgba(236, 72, 153, 0.3);
      transition: var(--transition);
    }

    .btn-nav-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(236, 72, 153, 0.45);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 区域通用样式 */
    .section-spacing {
      padding: 72px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px;
    }

    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(236, 72, 153, 0.1));
      color: var(--primary);
      border: 1px solid rgba(79, 70, 229, 0.2);
      border-radius: 20px;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

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

    .section-desc {
      font-size: 16px;
      color: var(--text-sub);
    }

    /* 首屏 HERO 区域（严禁图片） */
    .hero-section {
      padding: 80px 0 60px;
      text-align: center;
      position: relative;
    }

    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      padding: 6px 18px;
      border-radius: 40px;
      box-shadow: 0 4px 20px rgba(99, 102, 241, 0.15);
      border: 1px solid rgba(99, 102, 241, 0.2);
      margin-bottom: 24px;
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
    }

    .hero-pill .dot {
      width: 8px;
      height: 8px;
      background: #10b981;
      border-radius: 50%;
      box-shadow: 0 0 10px #10b981;
    }

    .hero-main-title {
      font-size: 44px;
      line-height: 1.25;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-highlight {
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-lead {
      font-size: 18px;
      color: var(--text-sub);
      max-width: 780px;
      margin: 0 auto 36px;
      font-weight: 400;
    }

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

    .btn-hero-primary {
      padding: 14px 34px;
      background: var(--accent-gradient);
      color: #ffffff !important;
      font-size: 16px;
      font-weight: 700;
      border-radius: 40px;
      box-shadow: 0 10px 25px rgba(236, 72, 153, 0.4);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-hero-primary:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 14px 30px rgba(236, 72, 153, 0.5);
    }

    .btn-hero-secondary {
      padding: 14px 32px;
      background: #ffffff;
      color: var(--text-main);
      font-size: 16px;
      font-weight: 700;
      border-radius: 40px;
      border: 2px solid rgba(99, 102, 241, 0.2);
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
      transition: var(--transition);
    }

    .btn-hero-secondary:hover {
      border-color: var(--primary);
      background: rgba(99, 102, 241, 0.04);
      transform: translateY(-3px);
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      max-width: 980px;
      margin: 0 auto;
    }

    .hero-stat-card {
      background: #ffffff;
      padding: 22px 18px;
      border-radius: var(--radius);
      border: 1px solid var(--card-border);
      box-shadow: var(--card-shadow);
      text-align: center;
      transition: var(--transition);
    }

    .hero-stat-card:hover {
      transform: translateY(-4px);
      border-color: rgba(236, 72, 153, 0.3);
    }

    .stat-num {
      font-size: 28px;
      font-weight: 900;
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 平台矩阵标签云 */
    .model-tags-wrapper {
      background: #ffffff;
      padding: 30px;
      border-radius: var(--radius);
      border: 1px solid var(--card-border);
      box-shadow: var(--card-shadow);
      margin-top: 40px;
    }

    .model-tags-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 16px;
      text-align: center;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .tags-container {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .model-chip {
      background: rgba(99, 102, 241, 0.06);
      color: var(--primary);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 700;
      border: 1px solid rgba(99, 102, 241, 0.15);
      transition: var(--transition);
    }

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

    /* 服务卡片网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border-radius: var(--radius);
      padding: 28px;
      border: 1px solid var(--card-border);
      box-shadow: var(--card-shadow);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--card-hover-shadow);
      border-color: rgba(236, 72, 153, 0.3);
    }

    .service-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(236, 72, 153, 0.15));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      color: var(--primary);
      margin-bottom: 20px;
    }

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

    .service-desc {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .service-features {
      list-style: none;
      font-size: 13px;
      color: var(--text-muted);
      border-top: 1px solid rgba(0, 0, 0, 0.05);
      padding-top: 14px;
    }

    .service-features li {
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .service-features li::before {
      content: "✓";
      color: #10b981;
      font-weight: bold;
    }

    /* 图文混排区 */
    .showcase-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      margin-bottom: 40px;
    }

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

    .showcase-media img {
      width: 100%;
      height: auto;
      display: block;
      transition: var(--transition);
    }

    .showcase-media img:hover {
      transform: scale(1.02);
    }

    .showcase-content h3 {
      font-size: 26px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .showcase-content p {
      font-size: 15px;
      color: var(--text-sub);
      margin-bottom: 20px;
      line-height: 1.7;
    }

    /* 对比评测表格板块 */
    .eval-highlight-box {
      background: linear-gradient(135deg, #4f46e5, #ec4899);
      color: #ffffff;
      padding: 30px;
      border-radius: var(--radius);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 30px;
      box-shadow: 0 15px 35px rgba(79, 70, 229, 0.25);
    }

    .eval-score-wrap {
      display: flex;
      align-items: baseline;
      gap: 10px;
    }

    .eval-score-huge {
      font-size: 54px;
      font-weight: 900;
      line-height: 1;
    }

    .eval-stars {
      color: #fbbf24;
      font-size: 24px;
    }

    .table-container {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--card-border);
      box-shadow: var(--card-shadow);
      overflow-x: auto;
    }

    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }

    .custom-table th, .custom-table td {
      padding: 18px 22px;
      border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    }

    .custom-table th {
      background: #f8fafc;
      color: var(--text-main);
      font-weight: 700;
      font-size: 15px;
    }

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

    .custom-table tr:hover td {
      background: #faf5ff;
    }

    .highlight-cell {
      background: rgba(99, 102, 241, 0.05);
      font-weight: 700;
      color: var(--primary);
    }

    /* 流程步骤 */
    .process-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
    }

    .process-card {
      background: #ffffff;
      padding: 24px 18px;
      border-radius: var(--radius);
      border: 1px solid var(--card-border);
      box-shadow: var(--card-shadow);
      position: relative;
      text-align: center;
    }

    .process-step-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--accent-gradient);
      color: #ffffff;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 14px;
      font-size: 14px;
    }

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

    .process-desc {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.5;
    }

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

    .review-card {
      background: #ffffff;
      padding: 28px;
      border-radius: var(--radius);
      border: 1px solid var(--card-border);
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-top: 18px;
      border-top: 1px solid rgba(0, 0, 0, 0.05);
      padding-top: 14px;
    }

    .review-avatar-char {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--accent-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 16px;
    }

    .review-name {
      font-weight: 700;
      font-size: 15px;
      color: var(--text-main);
    }

    .review-role {
      font-size: 12px;
      color: var(--text-muted);
    }

    .review-stars {
      color: #fbbf24;
      font-size: 14px;
      margin-bottom: 8px;
    }

    .review-content {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
      font-style: italic;
    }

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

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

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

    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 14px;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      outline: none;
      transition: var(--transition);
      background: #f8fafc;
      color: var(--text-main);
    }

    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    }

    .btn-submit {
      width: 100%;
      padding: 14px;
      background: var(--accent-gradient);
      color: #ffffff;
      font-size: 16px;
      font-weight: 700;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 4px 15px rgba(236, 72, 153, 0.35);
      transition: var(--transition);
    }

    .btn-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(236, 72, 153, 0.45);
    }

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

    .faq-item {
      background: #ffffff;
      border-radius: var(--radius-sm);
      border: 1px solid var(--card-border);
      box-shadow: 0 2px 8px rgba(0,0,0,0.02);
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 22px;
      font-weight: 700;
      font-size: 15px;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
      transition: var(--transition);
    }

    .faq-question:hover {
      color: var(--primary);
      background: #faf5ff;
    }

    .faq-icon {
      font-size: 18px;
      transition: var(--transition);
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #ffffff;
      color: var(--text-sub);
      font-size: 14px;
      line-height: 1.7;
      padding: 0 22px;
    }

    .faq-item.active .faq-answer {
      max-height: 250px;
      padding: 0 22px 18px 22px;
    }

    /* 文章列表 & 动态 */
    .articles-wrapper {
      background: #ffffff;
      border-radius: var(--radius);
      padding: 32px;
      border: 1px solid var(--card-border);
      box-shadow: var(--card-shadow);
      margin-bottom: 24px;
    }

    .article-links-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 12px;
      margin-top: 16px;
    }

    .article-pill-link {
      display: flex;
      align-items: center;
      padding: 12px 16px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-sm);
      font-size: 13px;
      color: var(--text-sub);
      font-weight: 600;
      transition: var(--transition);
    }

    .article-pill-link:hover {
      background: rgba(99, 102, 241, 0.08);
      color: var(--primary);
      border-color: var(--primary-light);
      transform: translateX(4px);
    }

    /* 底部收尾 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid #e2e8f0;
      padding: 60px 0 30px;
      color: var(--text-sub);
      font-size: 14px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-brand p {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 12px;
      line-height: 1.6;
    }

    .footer-col-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

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

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

    .footer-qr-wrap img {
      max-width: 100px;
      height: auto;
      border-radius: var(--radius-sm);
      border: 1px solid #e2e8f0;
      margin-top: 8px;
    }

    .friend-links-bar {
      border-top: 1px solid #f1f5f9;
      padding: 20px 0;
      margin-top: 20px;
      font-size: 13px;
    }

    .friend-links-bar a {
      margin-right: 16px;
      color: var(--text-muted);
      transition: var(--transition);
      display: inline-block;
      margin-bottom: 6px;
    }

    .friend-links-bar a:hover {
      color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid #f1f5f9;
      padding-top: 24px;
      text-align: center;
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 浮动客服 */
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 24px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--accent-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      box-shadow: 0 4px 15px rgba(236, 72, 153, 0.4);
      cursor: pointer;
      border: none;
      transition: var(--transition);
    }

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

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-main-title {
        font-size: 34px;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .showcase-layout {
        grid-template-columns: 1fr;
      }
      .process-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        border-bottom: 1px solid #e2e8f0;
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-main-title {
        font-size: 28px;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .process-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }