:root {
      --bg-main: #0a0614;
      --bg-card: rgba(22, 14, 42, 0.85);
      --bg-card-hover: rgba(36, 20, 68, 0.95);
      --primary-pink: #ff2a85;
      --primary-purple: #8b2df0;
      --cyan-neon: #00f0ff;
      --text-main: #f3f0fb;
      --text-sub: #b3a5c9;
      --border-color: rgba(255, 42, 133, 0.28);
      --border-glow: rgba(139, 45, 240, 0.5);
      --gradient-pink-purple: linear-gradient(135deg, #ff2a85 0%, #8b2df0 100%);
      --gradient-card: linear-gradient(180deg, rgba(30, 16, 56, 0.8) 0%, rgba(16, 9, 32, 0.9) 100%);
      --shadow-neon: 0 0 20px rgba(255, 42, 133, 0.35), 0 0 40px rgba(139, 45, 240, 0.2);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      background: radial-gradient(circle at 15% 15%, rgba(139, 45, 240, 0.18) 0%, transparent 40%),
                  radial-gradient(circle at 85% 60%, rgba(255, 42, 133, 0.15) 0%, transparent 45%),
                  var(--bg-main);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.3s ease;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      border-radius: 999px;
      font-weight: 600;
      font-size: 15px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      text-align: center;
    }
    .btn-primary {
      background: var(--gradient-pink-purple);
      color: #fff;
      box-shadow: 0 4px 18px rgba(255, 42, 133, 0.4);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 25px rgba(255, 42, 133, 0.6);
      color: #fff;
    }
    .btn-outline {
      background: rgba(255, 255, 255, 0.05);
      border-color: var(--primary-pink);
      color: #fff;
    }
    .btn-outline:hover {
      background: rgba(255, 42, 133, 0.15);
      border-color: var(--cyan-neon);
      transform: translateY(-2px);
    }
    .section {
      padding: 85px 0;
      position: relative;
    }
    .section-title-wrap {
      text-align: center;
      margin-bottom: 50px;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      border-radius: 20px;
      background: rgba(255, 42, 133, 0.12);
      border: 1px solid var(--border-color);
      color: var(--primary-pink);
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 1px;
      margin-bottom: 12px;
      text-transform: uppercase;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }
    .section-subtitle {
      font-size: 15px;
      color: var(--text-sub);
      max-width: 680px;
      margin: 0 auto;
    }
    /* 顶部导航 */
    .header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 6, 20, 0.85);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(255, 42, 133, 0.15);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 38px;
      width: auto;
      object-fit: contain;
    }
    .brand-name {
      font-size: 20px;
      font-weight: 800;
      background: var(--gradient-pink-purple);
      -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 a {
      padding: 8px 14px;
      font-size: 14px;
      color: var(--text-sub);
      font-weight: 500;
    }
    .nav-links a:hover {
      color: var(--primary-pink);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .menu-toggle {
      display: none;
      background: transparent;
      border: none;
      color: var(--text-main);
      font-size: 24px;
      cursor: pointer;
    }
    /* Hero 首屏（无图设计） */
    .hero-section {
      padding: 95px 0 80px;
      text-align: center;
      position: relative;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: rgba(255, 42, 133, 0.1);
      border: 1px solid var(--border-color);
      border-radius: 999px;
      color: var(--cyan-neon);
      font-size: 14px;
      margin-bottom: 24px;
      box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
    }
    .hero-title {
      font-size: 44px;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 22px;
      color: #fff;
    }
    .hero-title-highlight {
      background: var(--gradient-pink-purple);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 17px;
      color: var(--text-sub);
      max-width: 780px;
      margin: 0 auto 36px;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 1000px;
      margin: 0 auto;
    }
    .stat-card {
      background: var(--gradient-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px 16px;
      transition: all 0.3s ease;
    }
    .stat-card:hover {
      border-color: var(--primary-pink);
      transform: translateY(-4px);
      box-shadow: var(--shadow-neon);
    }
    .stat-number {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary-pink);
      margin-bottom: 4px;
    }
    .stat-label {
      font-size: 13px;
      color: var(--text-sub);
    }
    /* 卡片网格通用 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }
    .feature-card {
      background: var(--gradient-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 28px 24px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      border-color: var(--cyan-neon);
      transform: translateY(-4px);
      box-shadow: 0 8px 30px rgba(139, 45, 240, 0.25);
    }
    .card-icon {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: rgba(255, 42, 133, 0.15);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      color: var(--cyan-neon);
      margin-bottom: 18px;
    }
    .card-title {
      font-size: 18px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 10px;
    }
    .card-text {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
      flex-grow: 1;
    }
    /* 平台矩阵标签云 */
    .platform-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 30px;
    }
    .platform-pill {
      padding: 8px 16px;
      background: rgba(22, 14, 42, 0.9);
      border: 1px solid rgba(139, 45, 240, 0.4);
      border-radius: 30px;
      font-size: 13px;
      color: var(--text-main);
      transition: all 0.2s ease;
    }
    .platform-pill:hover {
      border-color: var(--primary-pink);
      color: var(--cyan-neon);
      transform: translateY(-2px);
    }
    /* 流程步骤 */
    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .process-card {
      background: var(--gradient-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 26px 20px;
      position: relative;
    }
    .process-step {
      font-size: 24px;
      font-weight: 900;
      color: var(--primary-pink);
      margin-bottom: 8px;
    }
    /* 对比表格 */
    .rating-banner {
      background: linear-gradient(90deg, rgba(255, 42, 133, 0.2), rgba(139, 45, 240, 0.2));
      border: 1px solid var(--primary-pink);
      border-radius: 16px;
      padding: 24px;
      display: flex;
      align-items: center;
      justify-content: space-around;
      margin-bottom: 30px;
      text-align: center;
    }
    .rating-item h4 {
      font-size: 14px;
      color: var(--text-sub);
      margin-bottom: 6px;
    }
    .rating-item .score {
      font-size: 32px;
      font-weight: 900;
      color: var(--cyan-neon);
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
      border-radius: 16px;
      border: 1px solid var(--border-color);
      background: var(--bg-card);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .custom-table th, .custom-table td {
      padding: 18px 20px;
      border-bottom: 1px solid rgba(255, 42, 133, 0.15);
      font-size: 14px;
    }
    .custom-table th {
      background: rgba(30, 16, 56, 0.9);
      color: #fff;
      font-weight: 700;
    }
    .custom-table td:nth-child(2) {
      color: var(--cyan-neon);
      font-weight: 600;
      background: rgba(255, 42, 133, 0.05);
    }
    /* 媒体与案例 */
    .media-card {
      background: var(--gradient-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      overflow: hidden;
      transition: all 0.3s ease;
    }
    .media-card:hover {
      border-color: var(--primary-pink);
      transform: translateY(-4px);
    }
    .media-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #120924;
    }
    .media-img-wrap.square {
      aspect-ratio: 1 / 1;
    }
    .media-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .media-card:hover img {
      transform: scale(1.05);
    }
    .media-content {
      padding: 20px;
    }
    /* 用户评论卡片 */
    .review-card {
      background: var(--gradient-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .avatar-circle {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--gradient-pink-purple);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: #fff;
    }
    .user-meta h4 {
      font-size: 15px;
      color: #fff;
    }
    .user-meta span {
      font-size: 12px;
      color: var(--text-sub);
    }
    .review-text {
      font-size: 13.5px;
      color: var(--text-main);
      line-height: 1.6;
    }
    /* FAQ 折叠面板 */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: var(--gradient-card);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow: hidden;
      transition: all 0.3s ease;
    }
    .faq-item.active {
      border-color: var(--cyan-neon);
    }
    .faq-header {
      padding: 18px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      font-size: 15px;
      color: #fff;
    }
    .faq-header:hover {
      color: var(--primary-pink);
    }
    .faq-toggle-icon {
      font-size: 18px;
      transition: transform 0.3s ease;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
      color: var(--cyan-neon);
    }
    .faq-body {
      padding: 0 24px 18px;
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.65;
      display: none;
    }
    .faq-item.active .faq-body {
      display: block;
    }
    /* 表单与联系区 */
    .form-box {
      background: var(--gradient-card);
      border: 1px solid var(--border-color);
      border-radius: 20px;
      padding: 36px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 13.5px;
      color: var(--text-main);
      margin-bottom: 8px;
      font-weight: 600;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      background: rgba(10, 6, 20, 0.7);
      border: 1px solid rgba(139, 45, 240, 0.4);
      border-radius: 8px;
      color: #fff;
      font-size: 14px;
      outline: none;
      transition: border 0.3s;
    }
    .form-control:focus {
      border-color: var(--cyan-neon);
    }
    .contact-info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 20px;
    }
    .contact-info-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: var(--text-sub);
    }
    .contact-info-item strong {
      color: #fff;
    }
    .qr-box {
      margin-top: 20px;
      padding: 16px;
      background: rgba(22, 14, 42, 0.8);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      display: inline-block;
      text-align: center;
    }
    .qr-box img {
      width: 130px;
      height: 130px;
      border-radius: 8px;
      margin-bottom: 8px;
      display: block;
    }
    /* 文章与外链 */
    .article-links-wrap {
      background: var(--gradient-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px;
      margin-top: 24px;
    }
    .article-tag-group {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 14px;
    }
    .article-chip {
      display: inline-block;
      padding: 6px 14px;
      background: rgba(255, 42, 133, 0.08);
      border: 1px solid rgba(255, 42, 133, 0.3);
      border-radius: 6px;
      font-size: 13px;
      color: var(--text-main);
    }
    .article-chip:hover {
      border-color: var(--cyan-neon);
      color: var(--cyan-neon);
    }
    /* 友情链接与页脚 */
    .footer {
      background: #05030a;
      border-top: 1px solid rgba(255, 42, 133, 0.2);
      padding: 50px 0 30px;
      color: var(--text-sub);
      font-size: 13px;
    }
    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 24px;
    }
    .friend-links a {
      color: var(--text-sub);
      padding: 4px 10px;
      background: rgba(255, 255, 255, 0.03);
      border-radius: 4px;
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .friend-links a:hover {
      color: var(--primary-pink);
      border-color: var(--primary-pink);
    }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      flex-wrap: wrap;
      gap: 12px;
    }
    /* 悬浮客服 */
    .floating-contact {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .floating-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--gradient-pink-purple);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 15px rgba(255, 42, 133, 0.5);
      cursor: pointer;
      border: none;
      font-size: 14px;
      font-weight: 700;
    }
    .floating-btn:hover {
      transform: scale(1.08);
    }
    /* 响应式适配 */
    @media (max-width: 992px) {
      .grid-4, .hero-stats-grid, .process-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-2 {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 34px;
      }
    }
    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: rgba(10, 6, 20, 0.98);
        flex-direction: column;
        padding: 20px 0;
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .grid-4, .grid-3, .hero-stats-grid, .process-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 26px;
      }
      .rating-banner {
        flex-direction: column;
        gap: 16px;
      }
    }