/* 核心基底与暗夜赛博高饱和粉紫视觉系统 */
    :root {
      --bg-dark: #090514;
      --bg-card: #150d2a;
      --bg-card-hover: #1f123c;
      --primary-pink: #ff2a85;
      --primary-purple: #9d4edd;
      --accent-cyan: #00f0ff;
      --text-main: #f8fafc;
      --text-muted: #cbd5e1;
      --border-cyber: rgba(255, 42, 133, 0.3);
      --border-purple: rgba(157, 78, 221, 0.3);
      --glow-pink: 0 0 20px rgba(255, 42, 133, 0.4);
      --glow-purple: 0 0 20px rgba(157, 78, 221, 0.4);
      --container-max: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.6;
    }

    body {
      background: radial-gradient(circle at 50% 0%, #2a0845 0%, #090514 70%);
      min-height: 100vh;
      overflow-x: hidden;
    }

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

    a:hover {
      color: var(--accent-cyan);
      text-shadow: 0 0 8px var(--accent-cyan);
    }

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

    /* 顶部导航 */
    .header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(9, 5, 20, 0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-cyber);
    }

    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 80px;
    }

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

    .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
    }

    /* 规定样式：.nav-links gap必须为0 */
    .nav-links {
      display: flex;
      gap: 0;
      list-style: none;
      align-items: center;
    }

    .nav-links li a {
      color: var(--text-muted);
      padding: 10px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      display: block;
    }

    .nav-links li a:hover {
      color: var(--primary-pink);
      background: rgba(255, 42, 133, 0.1);
      border-radius: 4px;
    }

    .nav-btn {
      background: linear-gradient(135deg, var(--primary-pink), var(--primary-purple));
      color: #fff !important;
      padding: 10px 22px;
      border-radius: 30px;
      font-weight: 600;
      box-shadow: var(--glow-pink);
      border: none;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .nav-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 25px rgba(255, 42, 133, 0.7);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--primary-pink);
      color: var(--primary-pink);
      font-size: 1.5rem;
      padding: 4px 10px;
      border-radius: 4px;
      cursor: pointer;
    }

    /* 模块通用样式 */
    .section-padding {
      padding: 90px 0;
      border-bottom: 1px solid rgba(157, 78, 221, 0.15);
    }

    .section-header {
      text-align: center;
      margin-bottom: 55px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 16px;
      background: rgba(255, 42, 133, 0.15);
      border: 1px solid var(--primary-pink);
      color: var(--primary-pink);
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      background: linear-gradient(135deg, #fff 30%, var(--primary-pink) 70%, var(--accent-cyan) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 15px;
    }

    .section-desc {
      color: var(--text-muted);
      max-width: 750px;
      margin: 0 auto;
      font-size: 1rem;
    }

    /* Hero 首屏 - 无图片规则 */
    .hero-section {
      padding: 120px 0 90px;
      text-align: center;
      position: relative;
      background: radial-gradient(circle at 50% 30%, rgba(255, 42, 133, 0.15) 0%, transparent 60%);
    }

    .hero-title {
      font-size: 2.8rem;
      line-height: 1.2;
      margin-bottom: 24px;
      font-weight: 900;
      background: linear-gradient(135deg, #ffffff 0%, #ff77e9 50%, #00f0ff 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 1.25rem;
      color: var(--text-muted);
      max-width: 860px;
      margin: 0 auto 35px;
    }

    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
      margin-bottom: 40px;
    }

    .hero-badge-item {
      background: rgba(21, 13, 42, 0.8);
      border: 1px solid var(--primary-purple);
      padding: 6px 18px;
      border-radius: 20px;
      font-size: 0.9rem;
      color: var(--accent-cyan);
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 20px;
      margin-bottom: 60px;
    }

    .btn-hero-primary {
      background: linear-gradient(135deg, var(--primary-pink), #b5179e);
      color: #fff;
      font-size: 1.1rem;
      padding: 14px 38px;
      border-radius: 40px;
      font-weight: bold;
      box-shadow: 0 0 30px rgba(255, 42, 133, 0.6);
      display: inline-block;
    }

    .btn-hero-primary:hover {
      transform: scale(1.05);
      color: #fff;
      box-shadow: 0 0 40px rgba(255, 42, 133, 0.9);
    }

    .btn-hero-secondary {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--accent-cyan);
      color: var(--accent-cyan);
      font-size: 1.1rem;
      padding: 14px 38px;
      border-radius: 40px;
      font-weight: bold;
    }

    .btn-hero-secondary:hover {
      background: rgba(0, 240, 255, 0.15);
      color: #fff;
    }

    /* 指标卡片网格 */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 30px;
    }

    .metric-card {
      background: var(--bg-card);
      border: 1px solid var(--border-cyber);
      padding: 24px;
      border-radius: 12px;
      text-align: center;
      transition: all 0.3s;
    }

    .metric-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--glow-pink);
    }

    .metric-num {
      font-size: 2.3rem;
      font-weight: 800;
      color: var(--primary-pink);
      font-family: monospace;
    }

    .metric-label {
      color: var(--text-muted);
      font-size: 0.9rem;
      margin-top: 6px;
    }

    /* 卡片网格 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }

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

    .cyber-card {
      background: var(--bg-card);
      border: 1px solid var(--border-purple);
      border-radius: 12px;
      padding: 28px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .cyber-card:hover {
      background: var(--bg-card-hover);
      border-color: var(--primary-pink);
      transform: translateY(-4px);
      box-shadow: var(--glow-purple);
    }

    .card-icon {
      font-size: 2rem;
      margin-bottom: 16px;
      color: var(--accent-cyan);
    }

    .card-title {
      font-size: 1.25rem;
      color: #fff;
      margin-bottom: 12px;
      font-weight: 700;
    }

    .card-desc {
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 对比表格 */
    .table-container {
      overflow-x: auto;
      background: var(--bg-card);
      border: 1px solid var(--border-cyber);
      border-radius: 12px;
      padding: 20px;
    }

    .cyber-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

    .cyber-table th, .cyber-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(157, 78, 221, 0.2);
    }

    .cyber-table th {
      background: rgba(255, 42, 133, 0.15);
      color: var(--primary-pink);
      font-size: 1.05rem;
    }

    .cyber-table tr:hover {
      background: rgba(255, 42, 133, 0.05);
    }

    .highlight-col {
      color: var(--accent-cyan);
      font-weight: bold;
      background: rgba(0, 240, 255, 0.05);
    }

    /* 评测卡片 */
    .rating-badge {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 15px;
      background: linear-gradient(90deg, rgba(255,42,133,0.2), rgba(0,240,255,0.2));
      border: 1px solid var(--primary-pink);
      padding: 20px;
      border-radius: 12px;
      margin-bottom: 35px;
    }

    .rating-score {
      font-size: 3rem;
      font-weight: 900;
      color: var(--accent-cyan);
    }

    .rating-stars {
      color: #ffd700;
      font-size: 1.5rem;
    }

    /* FAQ 折叠 */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 15px;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-purple);
      border-radius: 8px;
      overflow: hidden;
    }

    .faq-title {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: #fff;
    }

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

    .faq-content {
      padding: 0 24px 20px;
      color: var(--text-muted);
      font-size: 0.95rem;
      display: none;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      margin-top: 10px;
      padding-top: 15px;
    }

    .faq-item.active .faq-content {
      display: block;
    }

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

    /* 表单与联系区 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: start;
    }

    .cyber-form {
      background: var(--bg-card);
      border: 1px solid var(--border-cyber);
      padding: 35px;
      border-radius: 12px;
    }

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

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

    .form-control {
      width: 100%;
      padding: 12px 16px;
      background: rgba(9, 5, 20, 0.7);
      border: 1px solid var(--border-purple);
      border-radius: 6px;
      color: #fff;
      font-size: 0.95rem;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary-pink);
      box-shadow: 0 0 10px rgba(255, 42, 133, 0.3);
    }

    .btn-submit {
      width: 100%;
      background: linear-gradient(135deg, var(--primary-pink), var(--primary-purple));
      color: #fff;
      padding: 14px;
      border: none;
      border-radius: 6px;
      font-size: 1rem;
      font-weight: bold;
      cursor: pointer;
      box-shadow: var(--glow-pink);
    }

    .contact-info-card {
      background: var(--bg-card);
      border: 1px solid var(--border-purple);
      padding: 35px;
      border-radius: 12px;
    }

    .qr-container {
      text-align: center;
      margin-top: 25px;
      padding: 20px;
      background: rgba(255, 255, 255, 0.03);
      border-radius: 8px;
    }

    .qr-container img {
      max-width: 160px;
      border-radius: 8px;
      border: 2px solid var(--primary-pink);
    }

    /* 素材展示图控制 */
    .media-img-box {
      border-radius: 8px;
      overflow: hidden;
      margin-top: 15px;
      border: 1px solid var(--border-purple);
    }

    .ai-page-image, .media-img-box img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }

    /* 底部友情链接与页脚 */
    .footer {
      background: #05030b;
      border-top: 1px solid var(--border-cyber);
      padding: 60px 0 30px;
      color: var(--text-muted);
      font-size: 0.9rem;
    }

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

    .friend-links-box {
      background: rgba(21, 13, 42, 0.5);
      border: 1px solid rgba(157, 78, 221, 0.2);
      padding: 20px;
      border-radius: 8px;
      margin-top: 30px;
    }

    .friend-links-box h4 {
      color: #fff;
      margin-bottom: 12px;
    }

    .friend-links-box a {
      display: inline-block;
      margin-right: 15px;
      margin-bottom: 8px;
      color: var(--text-muted);
    }

    .copyright-bar {
      text-align: center;
      padding-top: 25px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      color: #64748b;
    }

    /* 浮动客服入口 */
    .float-kefu {
      position: fixed;
      right: 25px;
      bottom: 25px;
      z-index: 999;
      background: linear-gradient(135deg, var(--primary-pink), var(--primary-purple));
      color: #fff;
      padding: 12px 20px;
      border-radius: 30px;
      box-shadow: 0 0 20px rgba(255, 42, 133, 0.6);
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: bold;
    }

    /* 响应式适配 */
    @media (max-width: 992px) {
      .grid-3, .grid-4, .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-wrapper, .footer-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--bg-dark);
        flex-direction: column;
        padding: 20px 0;
        border-bottom: 1px solid var(--border-cyber);
      }
      .nav-links.active {
        display: flex;
      }
      .grid-3, .grid-4, .metrics-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 2rem;
      }
    }