:root {
      --primary: #e91e63;
      --primary-hover: #c2185b;
      --primary-light: #fce4ec;
      --secondary: #ff4081;
      --accent: #880e4f;
      --bg-base: #fdf8fa;
      --bg-card: #ffffff;
      --text-main: #2b2b2b;
      --text-muted: #666666;
      --border-color: #f8bbd0;
      --container-width: 1200px;
      --radius: 12px;
      --shadow-sm: 0 4px 12px rgba(233, 30, 99, 0.06);
      --shadow-md: 0 8px 24px rgba(233, 30, 99, 0.12);
      --shadow-lg: 0 16px 36px rgba(233, 30, 99, 0.18);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.3s ease;
    }

    .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, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

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

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

    .logo-box img.ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
    }

    .logo-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
      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 12px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      border-radius: 6px;
      transition: all 0.25s ease;
    }

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

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 8px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(233, 30, 99, 0.3);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary) 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(233, 30, 99, 0.4);
    }

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

    .btn-outline:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }

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

    /* 首屏 Hero - 严禁出现任何图片 */
    .hero-section {
      position: relative;
      padding: 90px 0 70px;
      background: radial-gradient(circle at top right, #fff0f5 0%, #fdf8fa 60%, #ffe4ec 100%);
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }

    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      padding: 6px 16px;
      background: var(--primary-light);
      color: var(--primary);
      border: 1px solid rgba(233, 30, 99, 0.3);
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 24px;
      animation: pulse 2s infinite ease-in-out;
    }

    @keyframes pulse {
      0%, 100% { transform: scale(1); }
      50% { transform: scale(1.03); }
    }

    .hero-title {
      font-size: 40px;
      line-height: 1.25;
      font-weight: 800;
      color: #1a1a1a;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title span {
      background: linear-gradient(135deg, var(--primary) 0%, #ff1744 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      margin-bottom: 36px;
      line-height: 1.6;
    }

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

    .btn-hero-main {
      padding: 14px 34px;
      font-size: 16px;
    }

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

    .stat-card {
      background: rgba(255, 255, 255, 0.85);
      border: 1px solid rgba(233, 30, 99, 0.15);
      border-radius: var(--radius);
      padding: 20px 16px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s ease;
    }

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

    .stat-number {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }

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

    /* 模块通用样式 */
    .section-padding {
      padding: 80px 0;
      position: relative;
    }

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

    .section-tag {
      font-size: 13px;
      text-transform: uppercase;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: 1px;
      margin-bottom: 8px;
      display: inline-block;
    }

    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
    }

    /* 平台介绍 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }

    .intro-text-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .intro-text-card p {
      margin-bottom: 16px;
      font-size: 15px;
      color: #444;
      line-height: 1.7;
    }

    .model-tags-container {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 24px;
    }

    .model-tag {
      background: var(--primary-light);
      color: var(--primary);
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 12px;
      font-weight: 600;
    }

    .intro-media-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 12px;
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }

    .intro-media-card img {
      width: 100%;
      height: auto;
      border-radius: calc(var(--radius) - 4px);
      display: block;
    }

    /* 服务与能力卡片 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--bg-card);
      border: 1px solid rgba(233, 30, 99, 0.15);
      border-radius: var(--radius);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      border-color: var(--primary);
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }

    .service-icon-box {
      width: 48px;
      height: 48px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 10px;
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .service-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

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

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

    .step-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      position: relative;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .step-number {
      width: 40px;
      height: 40px;
      line-height: 40px;
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      border-radius: 50%;
      margin: 0 auto 16px;
      font-size: 16px;
      box-shadow: 0 4px 10px rgba(233, 30, 99, 0.3);
    }

    .step-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .step-text {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 案例中心 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .case-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .case-img-box {
      width: 100%;
      overflow: hidden;
    }

    .case-img-box img {
      width: 100%;
      height: 240px;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .case-card:hover .case-img-box img {
      transform: scale(1.03);
    }

    .case-info {
      padding: 24px;
    }

    .case-badge {
      display: inline-block;
      padding: 3px 8px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 12px;
      font-weight: 600;
      border-radius: 4px;
      margin-bottom: 8px;
    }

    .case-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .case-summary {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 对比评测板块 */
    .compare-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .score-summary-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #fff0f5 0%, #ffe4ec 100%);
      padding: 24px 30px;
      border-radius: var(--radius);
      margin-bottom: 30px;
      border: 1px solid var(--border-color);
      flex-wrap: wrap;
      gap: 16px;
    }

    .score-left h3 {
      font-size: 20px;
      color: var(--primary);
      font-weight: 800;
      margin-bottom: 4px;
    }

    .score-left p {
      font-size: 14px;
      color: var(--text-muted);
    }

    .score-right {
      display: flex;
      align-items: baseline;
      gap: 8px;
    }

    .score-stars {
      color: #ff9800;
      font-size: 20px;
    }

    .score-big {
      font-size: 36px;
      font-weight: 900;
      color: var(--primary);
    }

    .score-max {
      font-size: 16px;
      color: var(--text-muted);
    }

    .table-responsive {
      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: 16px 20px;
      border-bottom: 1px solid #f0f0f0;
    }

    .compare-table th {
      background-color: #fafafa;
      color: var(--text-main);
      font-weight: 700;
    }

    .compare-table tr:hover td {
      background-color: #fff9fb;
    }

    .highlight-col {
      background-color: rgba(233, 30, 99, 0.03);
      font-weight: 600;
      color: var(--primary);
    }

    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .review-stars {
      color: #ffb300;
      font-size: 16px;
      margin-bottom: 12px;
    }

    .review-body {
      font-size: 14px;
      color: #444;
      line-height: 1.6;
      margin-bottom: 20px;
      font-style: italic;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px dashed var(--border-color);
      padding-top: 14px;
    }

    .reviewer-avatar {
      width: 40px;
      height: 40px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 15px;
    }

    .reviewer-name {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }

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

    /* FAQ 折叠面板 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: all 0.2s ease;
    }

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

    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

    .faq-icon {
      font-size: 18px;
      color: var(--primary);
      transition: transform 0.3s ease;
    }

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

    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 14px;
      color: #555;
      line-height: 1.7;
    }

    /* 表单与需求匹配 */
    .form-section-inner {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .form-info h3 {
      font-size: 24px;
      margin-bottom: 16px;
      color: var(--primary);
      font-weight: 700;
    }

    .form-info p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.6;
    }

    .contact-card-box {
      background: var(--bg-base);
      padding: 20px;
      border-radius: 8px;
      border: 1px solid var(--border-color);
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .contact-item:last-child {
      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: 12px 14px;
      font-size: 14px;
      border: 1px solid #e0e0e0;
      border-radius: 6px;
      outline: none;
      background: #fafafa;
      transition: all 0.25s ease;
    }

    .form-control:focus {
      background: #fff;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(233, 30, 99, 0.12);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }

    /* 文章列表 */
    .articles-container {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }

    .articles-tag-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 16px;
    }

    .article-pill {
      display: inline-block;
      padding: 8px 16px;
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: 20px;
      font-size: 13px;
      color: var(--text-main);
      transition: all 0.2s ease;
    }

    .article-pill:hover {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
    }

    /* 友情链接与页脚 */
    .site-footer {
      background: #1f1d20;
      color: #e0e0e0;
      padding: 60px 0 20px;
      border-top: 4px solid var(--primary);
      margin-top: 40px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1.2fr 1.2fr 1.6fr;
      gap: 36px;
      padding-bottom: 40px;
      border-bottom: 1px solid #332f35;
    }

    .footer-brand h4 {
      font-size: 20px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }

    .footer-brand p {
      font-size: 13px;
      color: #a8a8a8;
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .footer-col h5 {
      font-size: 15px;
      color: #fff;
      font-weight: 600;
      margin-bottom: 16px;
      position: relative;
      padding-bottom: 8px;
    }

    .footer-col h5::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 24px;
      height: 2px;
      background: var(--primary);
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-links li a {
      font-size: 13px;
      color: #b0b0b0;
    }

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

    .footer-qrcode {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 8px;
    }

    .footer-qrcode img {
      width: 100px;
      height: 100px;
      border-radius: 6px;
      background: #fff;
      padding: 4px;
      display: block;
    }

    .footer-bottom {
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: #888;
    }

    .footer-friend-links {
      margin-bottom: 16px;
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 16px;
    }

    .footer-friend-links a {
      color: #b0b0b0;
      font-size: 13px;
    }

    .footer-friend-links a:hover {
      color: #fff;
    }

    /* 悬浮客服面板 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .widget-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
      cursor: pointer;
      border: none;
      font-size: 18px;
      transition: all 0.3s ease;
      position: relative;
    }

    .widget-btn:hover {
      background: var(--primary-hover);
      transform: scale(1.08);
    }

    .widget-popover {
      display: none;
      position: absolute;
      right: 58px;
      bottom: 0;
      background: #fff;
      border-radius: 8px;
      padding: 12px;
      box-shadow: 0 6px 20px rgba(0,0,0,0.15);
      width: 150px;
      text-align: center;
      border: 1px solid var(--border-color);
    }

    .widget-btn:hover .widget-popover {
      display: block;
    }

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

    .widget-popover span {
      font-size: 12px;
      color: var(--text-main);
      font-weight: 600;
    }

    /* 响应式样式适配 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 32px;
      }
      .services-grid,
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .intro-grid {
        grid-template-columns: 1fr;
      }
      .form-section-inner {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 16px 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li a {
        padding: 12px 16px;
        width: 100%;
      }
      .hero-title {
        font-size: 26px;
      }
      .services-grid,
      .cases-grid,
      .reviews-grid,
      .hero-stats-grid,
      .steps-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .nav-actions .btn-outline {
        display: none;
      }
    }