:root {
      --bg-dark: #090514;
      --bg-card: #120b24;
      --bg-card-hover: #1b1035;
      --neon-pink: #ff2a85;
      --neon-purple: #9d4edd;
      --neon-cyan: #00f0ff;
      --neon-gradient: linear-gradient(135deg, #ff2a85 0%, #9d4edd 50%, #00f0ff 100%);
      --text-main: #f8fafc;
      --text-muted: #b8b1ce;
      --border-color: rgba(157, 78, 221, 0.28);
      --border-glow: rgba(255, 42, 133, 0.45);
      --glow-shadow: 0 0 24px rgba(255, 42, 133, 0.22);
      --container-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      background-color: var(--bg-dark);
      background-image: 
        radial-gradient(circle at 15% 15%, rgba(157, 78, 221, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 85% 35%, rgba(255, 42, 133, 0.12) 0%, transparent 45%),
        radial-gradient(circle at 50% 80%, rgba(0, 240, 255, 0.08) 0%, transparent 50%);
      background-attachment: fixed;
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
    }

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

    a:hover {
      color: var(--neon-pink);
      text-shadow: 0 0 8px rgba(255, 42, 133, 0.6);
    }

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

    /* 顶部导航 */
    .header-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(9, 5, 20, 0.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-color);
    }

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

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

    .ai-page-logo {
      height: 38px;
      width: auto;
      display: block;
      filter: drop-shadow(0 0 8px rgba(255, 42, 133, 0.5));
    }

    .brand-title {
      font-size: 1.35rem;
      font-weight: 700;
      letter-spacing: 1px;
      background: var(--neon-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

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

    .nav-links li a {
      color: var(--text-muted);
      font-size: 0.92rem;
      padding: 8px 12px;
      display: block;
      border-radius: 4px;
      transition: all 0.25s;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: #fff;
      background: rgba(157, 78, 221, 0.2);
    }

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

    .btn-cyber {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 20px;
      font-size: 0.9rem;
      font-weight: 600;
      border-radius: 6px;
      border: 1px solid var(--neon-pink);
      color: #fff;
      background: linear-gradient(135deg, rgba(255, 42, 133, 0.25), rgba(157, 78, 221, 0.35));
      box-shadow: 0 0 14px rgba(255, 42, 133, 0.3);
      cursor: pointer;
      transition: all 0.3s;
    }

    .btn-cyber:hover {
      background: linear-gradient(135deg, rgba(255, 42, 133, 0.5), rgba(157, 78, 221, 0.6));
      box-shadow: 0 0 20px rgba(255, 42, 133, 0.6);
      transform: translateY(-1px);
      color: #fff;
    }

    .menu-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--border-color);
      color: var(--text-main);
      padding: 6px 10px;
      border-radius: 4px;
      cursor: pointer;
      font-size: 1.1rem;
    }

    /* 首屏 Hero - 严格无图规范 */
    .hero-section {
      padding: 85px 0 60px;
      text-align: center;
      position: relative;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: rgba(255, 42, 133, 0.12);
      border: 1px solid rgba(255, 42, 133, 0.4);
      border-radius: 50px;
      font-size: 0.85rem;
      color: #ff7ebb;
      margin-bottom: 24px;
      box-shadow: 0 0 15px rgba(255, 42, 133, 0.2);
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      background: linear-gradient(180deg, #ffffff 30%, #e0d4f7 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      max-width: 820px;
      margin: 0 auto 36px;
      font-size: 1.1rem;
      color: var(--text-muted);
      line-height: 1.8;
    }

    .hero-cta-group {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .btn-large-primary {
      padding: 13px 34px;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: 8px;
      color: #fff;
      background: var(--neon-gradient);
      box-shadow: 0 0 25px rgba(255, 42, 133, 0.5);
      border: none;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-large-primary:hover {
      box-shadow: 0 0 35px rgba(255, 42, 133, 0.8);
      transform: translateY(-2px);
      color: #fff;
    }

    .btn-large-secondary {
      padding: 13px 30px;
      font-size: 1.05rem;
      font-weight: 600;
      border-radius: 8px;
      color: var(--text-main);
      background: rgba(18, 11, 36, 0.8);
      border: 1px solid var(--border-color);
      transition: all 0.3s;
    }

    .btn-large-secondary:hover {
      border-color: var(--neon-cyan);
      box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
      color: #fff;
    }

    /* 首屏数据指标卡片 - CSS几何与纯文字 */
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }

    .metric-card {
      background: rgba(18, 11, 36, 0.7);
      border: 1px solid var(--border-color);
      padding: 24px 16px;
      border-radius: 12px;
      backdrop-filter: blur(10px);
      transition: transform 0.3s ease, border-color 0.3s ease;
    }

    .metric-card:hover {
      transform: translateY(-4px);
      border-color: var(--neon-purple);
      box-shadow: 0 8px 24px rgba(157, 78, 221, 0.2);
    }

    .metric-value {
      font-size: 2.1rem;
      font-weight: 800;
      background: linear-gradient(135deg, #00f0ff, #ff2a85);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 6px;
    }

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

    /* 模块通用标题与排版 */
    section {
      padding: 70px 0;
      border-bottom: 1px solid rgba(157, 78, 221, 0.12);
    }

    .section-header {
      text-align: center;
      margin-bottom: 45px;
    }

    .section-tag {
      text-transform: uppercase;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 2px;
      color: var(--neon-cyan);
      margin-bottom: 8px;
      display: inline-block;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: #ffffff;
    }

    .section-subtitle {
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
      font-size: 0.98rem;
    }

    /* 平台介绍与多模型聚合生态 */
    .model-tags-container {
      background: rgba(18, 11, 36, 0.6);
      border: 1px solid var(--border-color);
      padding: 24px;
      border-radius: 12px;
      margin-top: 30px;
    }

    .model-tags-header {
      font-size: 0.95rem;
      color: var(--neon-pink);
      font-weight: 600;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .model-badge-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .model-badge {
      background: rgba(157, 78, 221, 0.15);
      border: 1px solid rgba(157, 78, 221, 0.35);
      color: #e0d4f7;
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 500;
      transition: all 0.25s;
    }

    .model-badge:hover {
      background: rgba(255, 42, 133, 0.25);
      border-color: var(--neon-pink);
      color: #ffffff;
      transform: scale(1.05);
      box-shadow: 0 0 10px rgba(255, 42, 133, 0.4);
    }

    /* 网格卡片容器 */
    .cyber-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 22px;
    }

    .cyber-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;
      transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
      position: relative;
      overflow: hidden;
    }

    .cyber-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--neon-gradient);
      opacity: 0;
      transition: opacity 0.3s;
    }

    .cyber-card:hover {
      transform: translateY(-5px);
      border-color: var(--neon-pink);
      background: var(--bg-card-hover);
      box-shadow: var(--glow-shadow);
    }

    .cyber-card:hover::before {
      opacity: 1;
    }

    .card-icon-box {
      width: 44px;
      height: 44px;
      border-radius: 8px;
      background: rgba(255, 42, 133, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--neon-pink);
      font-size: 1.25rem;
      margin-bottom: 16px;
      border: 1px solid rgba(255, 42, 133, 0.3);
    }

    .card-title {
      font-size: 1.15rem;
      font-weight: 600;
      color: #fff;
      margin-bottom: 10px;
    }

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

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

    .flow-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 22px;
      position: relative;
    }

    .flow-num {
      display: inline-block;
      padding: 4px 10px;
      background: var(--neon-gradient);
      color: #fff;
      font-weight: 700;
      font-size: 0.85rem;
      border-radius: 4px;
      margin-bottom: 12px;
    }

    /* 评测与对比模块 */
    .review-highlight-box {
      background: linear-gradient(135deg, rgba(255, 42, 133, 0.1), rgba(157, 78, 221, 0.15));
      border: 1px solid var(--neon-pink);
      border-radius: 14px;
      padding: 30px;
      margin-bottom: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

    .review-score-pane {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .big-score {
      font-size: 3.5rem;
      font-weight: 900;
      color: var(--neon-cyan);
      text-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
      line-height: 1;
    }

    .score-stars {
      color: #ffd166;
      font-size: 1.3rem;
      letter-spacing: 2px;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
      border-radius: 10px;
      border: 1px solid var(--border-color);
      background: var(--bg-card);
    }

    .cyber-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 640px;
    }

    .cyber-table th, .cyber-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(157, 78, 221, 0.18);
      font-size: 0.94rem;
    }

    .cyber-table th {
      background: rgba(157, 78, 221, 0.2);
      color: #fff;
      font-weight: 600;
    }

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

    .table-tag-yes {
      color: var(--neon-cyan);
      font-weight: 600;
    }

    .table-tag-no {
      color: #837a94;
    }

    /* 图文素材与案例展示 */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .media-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .media-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #170e30;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .media-img-wrap.square-ratio {
      aspect-ratio: 1 / 1;
      max-height: 380px;
    }

    .media-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      transition: transform 0.4s ease;
    }

    .media-card:hover .media-img-wrap img {
      transform: scale(1.03);
    }

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

    .media-title {
      font-size: 1.1rem;
      font-weight: 600;
      margin-bottom: 8px;
      color: #fff;
    }

    .media-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    .banner-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .banner-strip img {
      width: 100%;
      height: auto;
      border-radius: 8px;
      border: 1px solid var(--border-color);
    }

    /* FAQ折叠面板 */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      overflow: hidden;
      transition: border-color 0.25s;
    }

    .faq-item:hover {
      border-color: var(--neon-purple);
    }

    .faq-question {
      width: 100%;
      padding: 18px 22px;
      background: transparent;
      border: none;
      color: #ffffff;
      font-size: 1rem;
      font-weight: 600;
      text-align: left;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-answer {
      padding: 0 22px;
      max-height: 0;
      overflow: hidden;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.7;
      transition: max-height 0.3s ease, padding 0.3s ease;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-bottom: 18px;
    }

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

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

    /* 需求匹配与联系表单 */
    .form-wrapper {
      max-width: 720px;
      margin: 0 auto;
      background: var(--bg-card);
      border: 1px solid var(--neon-purple);
      box-shadow: 0 0 24px rgba(157, 78, 221, 0.18);
      border-radius: 12px;
      padding: 36px;
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
      margin-bottom: 20px;
    }

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

    .form-control {
      width: 100%;
      background: rgba(9, 5, 20, 0.8);
      border: 1px solid var(--border-color);
      padding: 12px 16px;
      color: #fff;
      border-radius: 6px;
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.25s, box-shadow 0.25s;
    }

    .form-control:focus {
      border-color: var(--neon-pink);
      box-shadow: 0 0 10px rgba(255, 42, 133, 0.3);
    }

    label {
      display: block;
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 6px;
    }

    /* 行业资讯与动态文章区 */
    .article-links-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 24px;
      margin-top: 20px;
    }

    .article-link-list {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      list-style: none;
    }

    .article-link-list li a {
      display: inline-block;
      background: rgba(157, 78, 221, 0.12);
      border: 1px solid rgba(157, 78, 221, 0.3);
      padding: 8px 16px;
      border-radius: 6px;
      color: #e0d4f7;
      font-size: 0.88rem;
    }

    .article-link-list li a:hover {
      background: var(--neon-pink);
      color: #fff;
      border-color: var(--neon-pink);
    }

    /* 加盟代理与被动收入板块 */
    .agent-box {
      background: linear-gradient(135deg, rgba(255, 42, 133, 0.15), rgba(0, 240, 255, 0.08));
      border: 1px solid var(--neon-pink);
      border-radius: 16px;
      padding: 40px;
      text-align: center;
    }

    .agent-perks {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin: 30px 0;
      text-align: left;
    }

    .perk-card {
      background: rgba(18, 11, 36, 0.8);
      border: 1px solid var(--border-color);
      padding: 20px;
      border-radius: 10px;
    }

    /* 底部页脚 */
    .site-footer {
      background: #06030e;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 25px;
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 35px;
    }

    .footer-title {
      color: #fff;
      font-size: 1.05rem;
      font-weight: 600;
      margin-bottom: 16px;
    }

    .footer-contact-item {
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .footer-qrcode-wrap {
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .footer-qrcode-wrap img {
      width: 96px;
      height: 96px;
      border: 2px solid var(--neon-purple);
      border-radius: 8px;
      padding: 4px;
      background: #fff;
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 15px;
    }

    .friend-links a {
      font-size: 0.85rem;
      color: #8d85a3;
    }

    .friend-links a:hover {
      color: var(--neon-cyan);
    }

    .footer-bottom {
      text-align: center;
      padding-top: 20px;
      border-top: 1px solid rgba(157, 78, 221, 0.12);
      font-size: 0.85rem;
      color: #726a88;
    }

    /* 悬浮客服面板 */
    .float-kefu {
      position: fixed;
      right: 20px;
      bottom: 25px;
      z-index: 999;
      background: rgba(18, 11, 36, 0.9);
      border: 1px solid var(--neon-pink);
      padding: 10px 14px;
      border-radius: 30px;
      box-shadow: 0 0 15px rgba(255, 42, 133, 0.4);
      display: flex;
      align-items: center;
      gap: 10px;
      cursor: pointer;
      backdrop-filter: blur(8px);
    }

    .float-kefu span {
      font-size: 0.85rem;
      font-weight: 600;
      color: #fff;
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.2rem;
      }
      .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .case-gallery-grid {
        grid-template-columns: 1fr;
      }
      .banner-strip {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 25px;
      }
      .agent-perks {
        grid-template-columns: 1fr;
      }
      .nav-links {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .nav-links.show-mobile {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: rgba(18, 11, 36, 0.98);
        border-bottom: 1px solid var(--border-color);
        padding: 15px 20px;
      }
    }

    @media (max-width: 576px) {
      .hero-title {
        font-size: 1.75rem;
      }
      .hero-metrics {
        grid-template-columns: 1fr;
      }
      .flow-steps {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group-full {
        grid-column: span 1;
      }
    }