/* 暗夜赛博高饱和粉紫风 核心主题变量 */
    :root {
      --bg-main: #0B0A12;
      --bg-card: rgba(22, 19, 38, 0.75);
      --bg-card-hover: rgba(35, 29, 61, 0.9);
      --border-color: rgba(255, 46, 147, 0.25);
      --border-glow: rgba(186, 46, 255, 0.5);
      --primary-pink: #FF2E93;
      --primary-purple: #B226FF;
      --accent-cyan: #00F5FF;
      --text-main: #F4F3F8;
      --text-muted: #A19EB7;
      --gradient-cyber: linear-gradient(135deg, #FF2E93 0%, #B226FF 50%, #00F5FF 100%);
      --gradient-card: linear-gradient(180deg, rgba(30, 24, 54, 0.6) 0%, rgba(14, 12, 26, 0.8) 100%);
      --shadow-neon: 0 0 20px rgba(255, 46, 147, 0.35);
      --container-max: 1200px;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 15% 15%, rgba(255, 46, 147, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 85% 65%, rgba(178, 38, 255, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 50% 90%, rgba(0, 245, 255, 0.08) 0%, transparent 50%);
      background-attachment: fixed;
    }

    a {
      color: var(--primary-pink);
      text-decoration: none;
      transition: all 0.3s ease;
    }

    a:hover {
      color: var(--accent-cyan);
      text-shadow: 0 0 8px rgba(0, 245, 255, 0.6);
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(11, 10, 18, 0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 46, 147, 0.2);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

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

    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
      filter: drop-shadow(0 0 6px var(--primary-pink));
    }

    .brand-name {
      font-size: 1.3rem;
      font-weight: 800;
      background: var(--gradient-cyber);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: 1px;
    }

    /* 导航链接gap必须为0要求 */
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

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

    .nav-links li a:hover,
    .nav-links li a.active {
      color: #FFF;
      text-shadow: 0 0 10px var(--primary-pink);
    }

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

    .btn-cyber {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      color: #FFF;
      background: linear-gradient(90deg, var(--primary-pink), var(--primary-purple));
      border: 1px solid rgba(255, 255, 255, 0.3);
      border-radius: 6px;
      box-shadow: 0 0 15px rgba(255, 46, 147, 0.4);
      cursor: pointer;
      transition: all 0.3s ease;
      white-space: nowrap;
    }

    .btn-cyber:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 25px rgba(255, 46, 147, 0.8), 0 0 10px var(--accent-cyan);
      color: #FFF;
    }

    .btn-outline {
      background: transparent;
      border: 1px solid var(--primary-pink);
      color: var(--text-main);
    }

    .btn-outline:hover {
      background: rgba(255, 46, 147, 0.15);
      border-color: var(--accent-cyan);
    }

    .nav-toggle {
      display: none;
      background: transparent;
      border: none;
      color: var(--text-main);
      font-size: 1.5rem;
      cursor: pointer;
    }

    /* 首屏 HERO 区域 - 严格不得出现图片 */
    .hero-section {
      padding: 100px 0 70px;
      text-align: center;
      position: relative;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: rgba(255, 46, 147, 0.12);
      border: 1px solid var(--primary-pink);
      border-radius: 30px;
      font-size: 0.85rem;
      color: var(--accent-cyan);
      margin-bottom: 24px;
      box-shadow: inset 0 0 10px rgba(255, 46, 147, 0.2);
    }

    .hero-title {
      font-size: 2.5rem;
      font-weight: 900;
      line-height: 1.2;
      margin-bottom: 20px;
      background: linear-gradient(135deg, #FFFFFF 20%, #FF80BF 60%, #00F5FF 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px;
    }

    .hero-ctas {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }

    .stat-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      backdrop-filter: blur(10px);
      transition: transform 0.3s ease;
    }

    .stat-card:hover {
      transform: translateY(-5px);
      border-color: var(--primary-purple);
      box-shadow: var(--shadow-neon);
    }

    .stat-number {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--accent-cyan);
      font-family: monospace;
    }

    .stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* 全局Section通用样式 */
    section {
      padding: 80px 0;
      position: relative;
    }

    .section-title-wrap {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-tag {
      font-size: 0.85rem;
      font-weight: 700;
      letter-spacing: 2px;
      color: var(--primary-pink);
      text-transform: uppercase;
      margin-bottom: 8px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
    }

    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
      margin-top: 10px;
      max-width: 650px;
      margin-left: auto;
      margin-right: auto;
    }

    /* 关于我们 & 平台介绍 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .intro-card {
      background: var(--gradient-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 36px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    }

    .intro-card h3 {
      font-size: 1.5rem;
      color: var(--accent-cyan);
      margin-bottom: 16px;
    }

    .intro-card p {
      color: var(--text-muted);
      margin-bottom: 16px;
      font-size: 0.98rem;
    }

    .model-tags-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 20px;
    }

    .tag-item {
      padding: 6px 14px;
      background: rgba(178, 38, 255, 0.15);
      border: 1px solid rgba(178, 38, 255, 0.4);
      border-radius: 20px;
      font-size: 0.85rem;
      color: #E2CFFF;
    }

    /* AIGC服务 & 场景矩阵 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 28px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

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

    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--primary-pink), var(--primary-purple));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 18px;
    }

    .service-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 10px;
    }

    .service-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 16px;
    }

    /* 对比评测卡片 */
    .evaluation-box {
      background: var(--gradient-card);
      border: 2px solid var(--primary-pink);
      border-radius: 20px;
      padding: 40px;
      box-shadow: var(--shadow-neon);
    }

    .eval-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 24px;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 20px;
    }

    .eval-score-badge {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .score-num {
      font-size: 3.5rem;
      font-weight: 900;
      color: var(--accent-cyan);
      line-height: 1;
    }

    .score-stars {
      color: #FFD700;
      font-size: 1.4rem;
    }

    .compare-table-wrapper {
      overflow-x: auto;
    }

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

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .compare-table th {
      background: rgba(255, 46, 147, 0.15);
      color: var(--accent-cyan);
      font-size: 1rem;
    }

    .compare-table td.highlight {
      color: var(--primary-pink);
      font-weight: 700;
      background: rgba(255, 46, 147, 0.05);
    }

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

    .timeline-step {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      position: relative;
    }

    .step-num {
      font-size: 2.5rem;
      font-weight: 900;
      color: rgba(255, 46, 147, 0.3);
      position: absolute;
      top: 10px;
      right: 16px;
    }

    .step-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--accent-cyan);
      margin-bottom: 8px;
    }

    /* 案例展示 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow: hidden;
      transition: transform 0.3s ease;
    }

    .case-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-neon);
    }

    .case-img-wrap {
      width: 100%;
      height: 200px;
      overflow: hidden;
      background: #1A172A;
    }

    .ai-page-image, .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .case-card:hover img {
      transform: scale(1.05);
    }

    .case-body {
      padding: 20px;
    }

    .case-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 8px;
    }

    /* 用户评论卡片 */
    .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: 12px;
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-style: italic;
      margin-bottom: 20px;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-purple), var(--accent-cyan));
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #FFF;
    }

    .user-info h5 {
      color: #FFF;
      font-size: 0.95rem;
    }

    .user-info span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* FAQ折叠面板 */
    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      overflow: hidden;
      transition: all 0.3s ease;
    }

    .faq-header {
      padding: 18px 24px;
      font-weight: 700;
      font-size: 1.05rem;
      color: #FFF;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-header:hover {
      color: var(--primary-pink);
    }

    .faq-icon {
      font-size: 1.2rem;
      color: var(--primary-pink);
      transition: transform 0.3s ease;
    }

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

    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: rgba(10, 8, 20, 0.6);
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 0.95rem;
    }

    .faq-item.active .faq-body {
      max-height: 250px;
      padding: 16px 24px;
    }

    /* 需求匹配 & 联系我们表单 */
    .contact-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: var(--gradient-card);
      border: 1px solid var(--border-color);
      border-radius: 20px;
      padding: 40px;
    }

    .form-group {
      margin-bottom: 20px;
    }

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

    .form-control {
      width: 100%;
      padding: 12px 16px;
      background: rgba(10, 8, 20, 0.8);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      color: #FFF;
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.3s ease;
    }

    .form-control:focus {
      border-color: var(--primary-pink);
      box-shadow: 0 0 10px rgba(255, 46, 147, 0.3);
    }

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

    .qr-card {
      text-align: center;
      background: rgba(20, 16, 38, 0.8);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
    }

    .qr-card img {
      width: 160px;
      height: 160px;
      object-fit: cover;
      border-radius: 8px;
      border: 2px solid var(--primary-pink);
      margin-bottom: 12px;
    }

    /* 页脚与友情链接 */
    footer.site-footer {
      background: #06050B;
      border-top: 1px solid rgba(255, 46, 147, 0.2);
      padding: 60px 0 30px;
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 2fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #FFF;
      font-size: 1.1rem;
      margin-bottom: 16px;
    }

    .footer-links-list {
      list-style: none;
    }

    .footer-links-list li {
      margin-bottom: 8px;
    }

    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 10px;
    }

    .friend-links-wrap a {
      color: var(--text-muted);
      font-size: 0.85rem;
      background: rgba(255, 255, 255, 0.05);
      padding: 4px 10px;
      border-radius: 4px;
    }

    .friend-links-wrap a:hover {
      color: var(--accent-cyan);
      background: rgba(0, 245, 255, 0.1);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      text-align: center;
      color: var(--text-muted);
    }

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

    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-pink), var(--primary-purple));
      color: #FFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      cursor: pointer;
      box-shadow: var(--shadow-neon);
      border: 1px solid rgba(255, 255, 255, 0.4);
      transition: transform 0.3s ease;
    }

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

    /* 响应式适配 */
    @media (max-width: 992px) {
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .timeline-grid { grid-template-columns: repeat(2, 1fr); }
      .cases-grid { grid-template-columns: repeat(2, 1fr); }
      .reviews-grid { grid-template-columns: repeat(1, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .intro-grid { grid-template-columns: 1fr; }
      .contact-container { grid-template-columns: 1fr; }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: rgba(11, 10, 18, 0.95);
        flex-direction: column;
        padding: 20px 0;
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.show { display: flex; }
      .nav-toggle { display: block; }
      .hero-title { font-size: 1.8rem; }
      .hero-stats-grid { grid-template-columns: 1fr; }
      .services-grid { grid-template-columns: 1fr; }
      .cases-grid { grid-template-columns: 1fr; }
      .timeline-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }