:root {
      --primary: #0F172A;
      --accent-coral: #FF385C;
      --accent-cyan: #00D2D3;
      --accent-amber: #FF9F1A;
      --accent-purple: #5F27CD;
      --bg-warm: #F8FAFC;
      --card-bg: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #475569;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --shadow-sm: 0 4px 6px -1px rgba(15, 23, 42, 0.05);
      --shadow-pop: 5px 5px 0px #0F172A;
      --shadow-pop-cyan: 5px 5px 0px #00D2D3;
      --shadow-pop-coral: 5px 5px 0px #FF385C;
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-warm);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    .main-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, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 2px solid var(--primary);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-box .ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
    }
    .brand-text {
      font-size: 22px;
      font-weight: 900;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }
    .nav-links a {
      font-weight: 700;
      font-size: 15px;
      color: var(--text-main);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }
    .nav-links a:hover {
      background-color: var(--accent-cyan);
      color: var(--primary);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-weight: 800;
      font-size: 15px;
      border-radius: var(--radius-sm);
      border: 2px solid var(--primary);
      cursor: pointer;
      transition: var(--transition);
      text-align: center;
    }
    .btn-solid-coral {
      background: var(--accent-coral);
      color: #FFFFFF;
      box-shadow: var(--shadow-pop);
    }
    .btn-solid-coral:hover {
      transform: translate(-2px, -2px);
      box-shadow: 7px 7px 0px var(--primary);
      color: #FFFFFF;
    }
    .btn-solid-cyan {
      background: var(--accent-cyan);
      color: var(--primary);
      box-shadow: var(--shadow-pop);
    }
    .btn-solid-cyan:hover {
      transform: translate(-2px, -2px);
      box-shadow: 7px 7px 0px var(--primary);
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: 2px solid var(--primary);
      padding: 6px 10px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-weight: 800;
    }
    /* 首屏 Hero */
    .hero-section {
      padding: 64px 0 54px;
      background: radial-gradient(circle at 10% 20%, rgba(0, 210, 211, 0.12) 0%, transparent 40%),
                  radial-gradient(circle at 90% 80%, rgba(255, 56, 92, 0.12) 0%, transparent 40%),
                  #F8FAFC;
      border-bottom: 2px solid var(--primary);
    }
    .hero-badge-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 20px;
    }
    .hero-badge {
      display: inline-block;
      background: var(--primary);
      color: #FFF;
      font-weight: 800;
      font-size: 13px;
      padding: 4px 14px;
      border-radius: 99px;
      letter-spacing: 0.5px;
    }
    .hero-badge-alt {
      background: var(--accent-amber);
      color: var(--primary);
      border: 2px solid var(--primary);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 44px;
      line-height: 1.15;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 22px;
      letter-spacing: -1px;
    }
    .hero-desc {
      font-size: 18px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 32px;
      max-width: 600px;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 28px;
    }
    .hero-cta-main {
      font-size: 18px;
      padding: 14px 34px;
    }
    .hero-features-list {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .hero-features-list span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .hero-features-list span::before {
      content: "✔";
      color: var(--accent-coral);
    }
    /* 首屏纯几何卡片组合 */
    .hero-board-panel {
      background: #FFFFFF;
      border: 3px solid var(--primary);
      border-radius: var(--radius-lg);
      box-shadow: 10px 10px 0px var(--primary);
      padding: 30px;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .board-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 2px solid var(--border-color);
      padding-bottom: 12px;
    }
    .board-tag {
      font-size: 13px;
      font-weight: 800;
      padding: 2px 10px;
      background: var(--accent-cyan);
      border: 1px solid var(--primary);
      border-radius: 4px;
    }
    .board-stats-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }
    .board-stat-item {
      background: var(--bg-warm);
      border: 2px solid var(--primary);
      border-radius: var(--radius-md);
      padding: 16px;
      transition: var(--transition);
    }
    .board-stat-item:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-pop);
    }
    .board-stat-title {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 700;
    }
    .board-stat-val {
      font-size: 26px;
      font-weight: 900;
      color: var(--primary);
      margin-top: 4px;
    }
    .board-stat-val small {
      font-size: 14px;
      color: var(--accent-coral);
    }
    .board-notice {
      background: #FFFBEB;
      border: 2px dashed var(--accent-amber);
      border-radius: var(--radius-md);
      padding: 14px 18px;
      font-size: 13px;
      color: #92400E;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    /* 通用章节样式 */
    .section-block {
      padding: 80px 0;
      border-bottom: 2px solid var(--primary);
    }
    .section-bg-alt {
      background-color: #FFFFFF;
    }
    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }
    .section-kicker {
      display: inline-block;
      font-size: 13px;
      font-weight: 900;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 12px;
      background: var(--accent-coral);
      color: #FFF;
      border: 2px solid var(--primary);
      border-radius: var(--radius-sm);
      box-shadow: 3px 3px 0 var(--primary);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 34px;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-subtitle {
      font-size: 16px;
      color: var(--text-muted);
    }
    /* 核心矩阵模型展示标签云 */
    .models-marquee {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 30px;
    }
    .model-chip {
      background: #FFF;
      border: 2px solid var(--primary);
      padding: 6px 14px;
      font-weight: 800;
      font-size: 13px;
      border-radius: 99px;
      box-shadow: 2px 2px 0 var(--primary);
      transition: var(--transition);
    }
    .model-chip:hover {
      background: var(--accent-cyan);
      transform: translateY(-2px);
    }
    /* 网格与卡片 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .brand-card {
      background: #FFF;
      border: 3px solid var(--primary);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-pop);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .brand-card:hover {
      transform: translateY(-4px);
      box-shadow: 8px 8px 0px var(--primary);
    }
    .brand-card-cyan {
      border-color: var(--primary);
    }
    .brand-card-cyan:hover {
      box-shadow: 8px 8px 0px var(--accent-cyan);
    }
    .brand-card-coral:hover {
      box-shadow: 8px 8px 0px var(--accent-coral);
    }
    .card-icon {
      width: 52px;
      height: 52px;
      border: 2px solid var(--primary);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: 20px;
      box-shadow: 3px 3px 0 var(--primary);
    }
    .card-title {
      font-size: 20px;
      font-weight: 900;
      margin-bottom: 12px;
      color: var(--primary);
    }
    .card-text {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.6;
    }
    .card-link {
      font-weight: 800;
      font-size: 14px;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .card-link:hover {
      color: var(--accent-coral);
    }
    /* 平台图文介绍区块 */
    .about-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .about-img-box {
      border: 3px solid var(--primary);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-pop-cyan);
      background: #FFF;
    }
    .about-img-box img {
      width: 100%;
      height: auto;
      display: block;
    }
    .about-content h3 {
      font-size: 28px;
      font-weight: 900;
      margin-bottom: 18px;
      color: var(--primary);
    }
    .about-content p {
      font-size: 16px;
      color: var(--text-muted);
      margin-bottom: 18px;
      line-height: 1.7;
    }
    .about-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 24px;
    }
    .pill {
      font-size: 13px;
      font-weight: 800;
      padding: 6px 14px;
      border: 2px solid var(--primary);
      border-radius: 99px;
      background: var(--bg-warm);
    }
    /* 流程步骤 */
    .steps-wrapper {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: #FFF;
      border: 2px solid var(--primary);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: 4px 4px 0 var(--primary);
      position: relative;
    }
    .step-num {
      position: absolute;
      top: -14px;
      left: 20px;
      background: var(--accent-amber);
      border: 2px solid var(--primary);
      font-weight: 900;
      font-size: 14px;
      padding: 2px 10px;
      border-radius: 99px;
    }
    .step-title {
      font-size: 18px;
      font-weight: 800;
      margin-top: 8px;
      margin-bottom: 10px;
    }
    .step-desc {
      font-size: 14px;
      color: var(--text-muted);
    }
    /* 对比表格 */
    .table-container {
      width: 100%;
      overflow-x: auto;
      border: 3px solid var(--primary);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-pop);
      background: #FFF;
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 15px;
    }
    .custom-table th {
      background: var(--primary);
      color: #FFF;
      font-weight: 800;
      font-size: 16px;
    }
    .custom-table tr:last-child td {
      border-bottom: none;
    }
    .custom-table tr:hover td {
      background-color: #F8FAFC;
    }
    .highlight-cell {
      background: rgba(0, 210, 211, 0.08);
      font-weight: 800;
      color: var(--primary);
    }
    .score-badge {
      display: inline-block;
      background: var(--accent-coral);
      color: #FFF;
      font-weight: 900;
      padding: 4px 12px;
      border-radius: 4px;
      border: 1px solid var(--primary);
    }
    /* 素材展示横方图 */
    .materials-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      margin-top: 40px;
    }
    .material-item {
      border: 3px solid var(--primary);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-pop);
      background: #FFF;
    }
    .material-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }
    /* 评价与评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #FFF;
      border: 2px solid var(--primary);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: 4px 4px 0px var(--primary);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-user-info {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 20px;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }
    .user-avatar-tag {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      border: 2px solid var(--primary);
      background: var(--accent-cyan);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 16px;
    }
    .user-meta-name {
      font-weight: 800;
      font-size: 15px;
    }
    .user-meta-role {
      font-size: 13px;
      color: var(--text-muted);
    }
    /* FAQ 折叠 */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      border: 2px solid var(--primary);
      border-radius: var(--radius-md);
      background: #FFF;
      box-shadow: 3px 3px 0 var(--primary);
      overflow: hidden;
    }
    .faq-question {
      width: 100%;
      padding: 18px 24px;
      text-align: left;
      font-size: 16px;
      font-weight: 800;
      color: var(--primary);
      background: transparent;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-icon {
      font-size: 18px;
      font-weight: 900;
      transition: var(--transition);
    }
    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px dashed var(--border-color);
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--accent-coral);
    }
    /* 表单与需求匹配 */
    .form-wrapper {
      max-width: 720px;
      margin: 0 auto;
      background: #FFF;
      border: 3px solid var(--primary);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: 8px 8px 0 var(--primary);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-label {
      display: block;
      font-weight: 800;
      font-size: 14px;
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 2px solid var(--primary);
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-family: inherit;
      outline: none;
      transition: var(--transition);
      background: #FAFAFA;
    }
    .form-control:focus {
      background: #FFF;
      box-shadow: 3px 3px 0 var(--accent-cyan);
    }
    textarea.form-control {
      min-height: 110px;
      resize: vertical;
    }
    /* 行业资讯文章区 */
    .articles-container {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .article-card {
      background: #FFF;
      border: 2px solid var(--primary);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: 4px 4px 0 var(--primary);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .article-date {
      font-size: 13px;
      color: var(--accent-coral);
      font-weight: 800;
      margin-bottom: 8px;
    }
    .article-title {
      font-size: 17px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    /* 客服与加盟联络 */
    .contact-card-box {
      background: #FFF;
      border: 3px solid var(--primary);
      border-radius: var(--radius-lg);
      box-shadow: 8px 8px 0 var(--primary);
      padding: 36px;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 32px;
      align-items: center;
    }
    .contact-details {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .contact-meta-item {
      background: var(--bg-warm);
      border: 2px solid var(--primary);
      border-radius: var(--radius-sm);
      padding: 16px;
    }
    .contact-meta-item strong {
      display: block;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 4px;
    }
    .contact-meta-item span {
      font-size: 16px;
      font-weight: 900;
      color: var(--primary);
    }
    .contact-qr-wrap {
      text-align: center;
      background: #FFFBEB;
      border: 2px dashed var(--primary);
      border-radius: var(--radius-md);
      padding: 20px;
    }
    .contact-qr-wrap img {
      width: 140px;
      height: 140px;
      border-radius: var(--radius-sm);
      margin-bottom: 10px;
      border: 2px solid var(--primary);
      display: inline-block;
    }
    /* 友情链接与页脚 */
    .site-footer {
      background: #FFFFFF;
      border-top: 3px solid var(--primary);
      padding: 50px 0 30px;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 36px;
    }
    .footer-brand h4 {
      font-size: 22px;
      font-weight: 900;
      margin-bottom: 12px;
    }
    .footer-brand p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      max-width: 440px;
    }
    .footer-col h5 {
      font-size: 16px;
      font-weight: 900;
      margin-bottom: 16px;
    }
    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links-list a {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 600;
      transition: var(--transition);
    }
    .footer-links-list a:hover {
      color: var(--accent-coral);
    }
    .friend-links-box {
      border-top: 2px dashed var(--border-color);
      padding-top: 24px;
      margin-bottom: 24px;
    }
    .friend-links-title {
      font-size: 14px;
      font-weight: 800;
      margin-bottom: 12px;
      color: var(--primary);
    }
    .friend-links-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }
    .friend-links-flex a {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 700;
      background: var(--bg-warm);
      border: 1px solid var(--border-color);
      padding: 4px 10px;
      border-radius: 4px;
      transition: var(--transition);
    }
    .friend-links-flex a:hover {
      background: var(--accent-cyan);
      color: var(--primary);
      border-color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
    }
    /* 浮动组件 */
    .float-dock {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .dock-btn {
      width: 48px;
      height: 48px;
      background: #FFF;
      border: 2px solid var(--primary);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      cursor: pointer;
      box-shadow: 3px 3px 0 var(--primary);
      transition: var(--transition);
      color: var(--primary);
      font-size: 14px;
    }
    .dock-btn:hover {
      transform: translateY(-2px);
      box-shadow: 5px 5px 0 var(--accent-coral);
    }
    .back-top {
      display: none;
    }
    /* 响应式适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .grid-4, .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-wrapper {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-card-box {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 768px) {
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #FFF;
        flex-direction: column;
        border-bottom: 2px solid var(--primary);
        padding: 16px 0;
      }
      .nav-links.active {
        display: flex;
      }
      .hero-h1 {
        font-size: 32px;
      }
      .grid-4, .grid-3, .grid-2, .reviews-grid, .articles-container {
        grid-template-columns: 1fr;
      }
      .materials-grid {
        grid-template-columns: 1fr;
      }
      .steps-wrapper {
        grid-template-columns: 1fr;
      }
      .about-layout {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
      .contact-details {
        grid-template-columns: 1fr;
      }
    }