:root {
      --primary: #4361ee;
      --primary-light: #4895ef;
      --accent-coral: #f72585;
      --accent-amber: #f8961e;
      --accent-teal: #4cc9f0;
      --accent-emerald: #10b981;
      --accent-violet: #7209b7;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-sub: #64748b;
      --border-color: #e2e8f0;
      --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 16px 36px rgba(15, 23, 42, 0.12);
      --rainbow-gradient: linear-gradient(135deg, #4361ee 0%, #7209b7 25%, #f72585 50%, #f8961e 75%, #4cc9f0 100%);
      --soft-rainbow-bg: linear-gradient(180deg, #f0f7ff 0%, #faf5ff 35%, #fff5f5 70%, #f0fdf4 100%);
    }

    * {
      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;
      color: var(--text-main);
      background-color: var(--bg-main);
      line-height: 1.6;
    }

    body {
      background: var(--soft-rainbow-bg);
      background-attachment: fixed;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 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 var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

    .brand-group {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .brand-logo-wrap {
      max-width: 140px;
      display: flex;
      align-items: center;
    }

    .ai-page-home-link {
      font-weight: 600;
      color: var(--text-main);
      text-decoration: none;
      font-size: 0.95rem;
      padding: 6px 12px;
      border-radius: 6px;
      background: #f1f5f9;
      transition: all 0.25s ease;
    }

    .ai-page-home-link:hover {
      background: #e2e8f0;
      color: var(--primary);
    }

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

    .nav-links a {
      text-decoration: none;
      color: var(--text-muted);
      font-weight: 500;
      font-size: 0.95rem;
      padding: 8px 14px;
      border-radius: 6px;
      transition: color 0.2s, background-color 0.2s;
    }

    .nav-links a:hover {
      color: var(--primary);
      background-color: #f8fafc;
    }

    .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: 8px;
      text-decoration: none;
      cursor: pointer;
      border: 1px solid transparent;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
      white-space: nowrap;
    }

    .btn:hover {
      transform: translateY(-1px);
    }

    .btn:active {
      transform: translateY(0);
    }

    .btn-rainbow {
      background: var(--rainbow-gradient);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(67, 97, 238, 0.35);
    }

    .btn-rainbow:hover {
      box-shadow: 0 6px 20px rgba(67, 97, 238, 0.45);
    }

    .btn-outline {
      background: #ffffff;
      color: var(--primary);
      border-color: #cbd5e1;
    }

    .btn-outline:hover {
      border-color: var(--primary);
      background: #f8fafc;
    }

    .btn-secondary {
      background: #e2e8f0;
      color: var(--text-main);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 8px 12px;
      border-radius: 6px;
      font-size: 1.25rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 通用区块与标题 */
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }

    .section-head {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 52px auto;
    }

    .tag-badge {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.825rem;
      font-weight: 600;
      letter-spacing: 0.5px;
      color: var(--primary);
      background: #e0e7ff;
      border-radius: 999px;
      margin-bottom: 14px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
    }

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

    /* Hero首屏 - 严禁图片纯CSS构建科技感 */
    .hero-section {
      padding: 80px 0 60px 0;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .hero-glow-1 {
      position: absolute;
      width: 450px;
      height: 450px;
      top: -100px;
      left: 10%;
      background: radial-gradient(circle, rgba(76, 201, 240, 0.25) 0%, rgba(255, 255, 255, 0) 70%);
      z-index: -1;
      pointer-events: none;
    }

    .hero-glow-2 {
      position: absolute;
      width: 480px;
      height: 480px;
      top: -50px;
      right: 10%;
      background: radial-gradient(circle, rgba(247, 37, 133, 0.2) 0%, rgba(255, 255, 255, 0) 70%);
      z-index: -1;
      pointer-events: none;
    }

    .hero-inner {
      max-width: 960px;
      margin: 0 auto;
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      letter-spacing: -0.5px;
      line-height: 1.25;
      margin-bottom: 24px;
      color: #0f172a;
    }

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

    .hero-lead {
      font-size: 1.2rem;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto 36px auto;
      line-height: 1.8;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .hero-cta-btn-main {
      font-size: 1.15rem;
      padding: 16px 36px;
      border-radius: 12px;
      box-shadow: 0 8px 24px rgba(67, 97, 238, 0.35);
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 30px;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 24px 16px;
      border-radius: 14px;
      box-shadow: var(--shadow-sm);
      position: relative;
      overflow: hidden;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

    .stat-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: var(--rainbow-gradient);
    }

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

    .stat-value {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1;
      margin-bottom: 8px;
    }

    .stat-label {
      font-size: 0.9rem;
      color: var(--text-sub);
    }

    /* 平台聚合生态条目 */
    .model-pills-bar {
      margin-top: 40px;
      padding: 20px;
      background: rgba(255, 255, 255, 0.7);
      border-radius: 12px;
      border: 1px dashed #cbd5e1;
    }

    .model-pills-title {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-sub);
      text-transform: uppercase;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }

    .pills-flex {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }

    .pill-item {
      font-size: 0.8rem;
      padding: 5px 12px;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 999px;
      color: var(--text-muted);
      font-weight: 600;
      box-shadow: 0 1px 2px rgba(0,0,0,0.03);
    }

    /* 平台核心架构 - 关于我们 */
    .about-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .about-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 32px 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .about-box:hover {
      border-color: #cbd5e1;
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }

    .box-badge {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.2rem;
      margin-bottom: 20px;
      color: #fff;
    }

    .bb-1 { background: #4361ee; }
    .bb-2 { background: #7209b7; }
    .bb-3 { background: #10b981; }

    .about-box h3 {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .about-box p {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.65;
    }

    /* AIGC服务与场景网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 20px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }

    .service-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 8px;
    }

    .service-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 一站式制作全流程展示 */
    .workflow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-bottom: 40px;
    }

    .step-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 24px;
      position: relative;
    }

    .step-number {
      font-size: 1.5rem;
      font-weight: 900;
      color: var(--primary);
      opacity: 0.8;
      margin-bottom: 8px;
    }

    .step-item h3 {
      font-size: 1.1rem;
      margin-bottom: 8px;
    }

    .step-item p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 案例图片与视觉演示 */
    .media-showcase-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      margin-top: 32px;
    }

    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .media-img-container {
      width: 100%;
      background: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }

    .media-img-container img {
      max-width: 100%;
      height: auto;
      display: block;
      transition: transform 0.3s ease;
    }

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

    .media-info {
      padding: 18px 20px;
    }

    .media-info h4 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .media-info p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 对比评测卡片与表格 */
    .benchmark-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 36px;
      box-shadow: var(--shadow-md);
      margin-bottom: 30px;
    }

    .benchmark-score-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      padding-bottom: 24px;
      border-bottom: 1px solid var(--border-color);
      margin-bottom: 28px;
    }

    .rating-badge {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .stars {
      color: #f59e0b;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }

    .score-big {
      font-size: 2.4rem;
      font-weight: 900;
      color: var(--primary);
    }

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

    .table-responsive {
      overflow-x: auto;
    }

    .benchmark-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }

    .benchmark-table th, .benchmark-table td {
      padding: 14px 16px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }

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

    .benchmark-table tr td:nth-child(2) {
      font-weight: 700;
      color: var(--primary);
      background-color: #f0f7ff;
    }

    /* 用户评论 6条 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-content {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-top: 14px;
      border-top: 1px solid #f1f5f9;
    }

    .reviewer-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: #e2e8f0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
      font-size: 1rem;
    }

    .reviewer-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
    }

    .reviewer-info p {
      font-size: 0.8rem;
      color: var(--text-sub);
    }

    /* 表单与需求匹配 */
    .form-wrapper-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 40px;
      box-shadow: var(--shadow-md);
      max-width: 820px;
      margin: 0 auto;
    }

    .booking-form {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

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

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      font-size: 0.95rem;
      color: var(--text-main);
      background-color: #f8fafc;
      transition: border-color 0.2s, background-color 0.2s;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background-color: #ffffff;
      box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.15);
    }

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

    /* FAQ 手风琴 */
    .faq-container {
      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: 10px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .faq-header {
      padding: 18px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      font-size: 1.05rem;
      font-weight: 600;
      background: #ffffff;
      color: var(--text-main);
      user-select: none;
      transition: background-color 0.2s;
    }

    .faq-header:hover {
      background-color: #f8fafc;
    }

    .faq-icon {
      font-size: 1.25rem;
      line-height: 1;
      transition: transform 0.2s ease;
      color: var(--primary);
    }

    .faq-body {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.25s ease-out, padding 0.25s ease;
      background: #ffffff;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
    }

    .faq-item.active .faq-body {
      padding: 0 24px 20px 24px;
      max-height: 250px;
    }

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

    /* 文章列表与资讯 */
    .article-cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 24px;
    }

    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 22px;
      text-decoration: none;
      color: inherit;
      display: block;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s, box-shadow 0.2s;
    }

    .article-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }

    .article-card h4 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .article-card p {
      font-size: 0.88rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 联系我们与二维码 */
    .contact-details-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 36px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
      box-shadow: var(--shadow-sm);
    }

    .contact-info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .contact-info-item {
      font-size: 1rem;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .contact-info-label {
      font-weight: 700;
      color: var(--text-sub);
      width: 110px;
    }

    .qr-side {
      text-align: center;
      padding: 24px;
      background: #f8fafc;
      border-radius: 12px;
      border: 1px dashed var(--border-color);
    }

    .qr-container {
      max-width: 170px;
      margin: 0 auto 12px auto;
    }

    .qr-container img {
      max-width: 100%;
      height: auto;
      border-radius: 8px;
      display: block;
    }

    /* 友情链接与页脚 */
    .site-footer {
      background-color: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 48px 0 32px 0;
      color: var(--text-muted);
      margin-top: auto;
    }

    .footer-inner {
      display: flex;
      flex-direction: column;
      gap: 30px;
    }

    .friend-links-box {
      padding-bottom: 24px;
      border-bottom: 1px solid #f1f5f9;
    }

    .friend-links-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }

    .friend-links-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .friend-links-flex a {
      color: var(--text-sub);
      text-decoration: none;
      font-size: 0.9rem;
      transition: color 0.2s;
    }

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

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.88rem;
      color: var(--text-sub);
    }

    /* 浮动组件 */
    .floating-bar {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .floating-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--text-main);
      text-decoration: none;
      font-weight: 700;
      font-size: 1.1rem;
      transition: transform 0.2s, background-color 0.2s;
    }

    .floating-btn:hover {
      transform: scale(1.08);
      background-color: #f8fafc;
      color: var(--primary);
    }

    /* 响应式样式适配 */
    @media (max-width: 1024px) {
      .hero-title { font-size: 2.3rem; }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .about-grid { grid-template-columns: 1fr; }
      .workflow-steps { grid-template-columns: repeat(2, 1fr); }
      .reviews-grid { grid-template-columns: 1fr; }
      .article-cards-grid { grid-template-columns: 1fr; }
      .media-showcase-grid { grid-template-columns: 1fr; }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }

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

      .nav-links a {
        width: 100%;
        padding: 10px 0;
      }

      .menu-toggle {
        display: block;
      }

      .hero-title {
        font-size: 1.9rem;
      }

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

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

      .contact-details-box {
        grid-template-columns: 1fr;
      }

      .benchmark-score-row {
        flex-direction: column;
        align-items: flex-start;
      }
    }