/* 多彩涂鸦风格基础变量 */
    :root {
      --bg-main: #fcfbfa;
      --bg-card: #ffffff;
      --text-dark: #1e1e24;
      --text-muted: #5e5e6e;
      --brand-primary: #6c5ce7;
      --brand-secondary: #ff7675;
      --brand-yellow: #ffeaa7;
      --brand-green: #55efc4;
      --brand-blue: #74b9ff;
      --border-dark: #1e1e24;
      --shadow-graffiti: 4px 4px 0px #1e1e24;
      --shadow-graffiti-lg: 6px 6px 0px #1e1e24;
      --shadow-hover: 8px 8px 0px #1e1e24;
      --radius-main: 16px;
      --radius-sm: 8px;
      --container-width: 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-dark);
      line-height: 1.6;
      background-image: 
        radial-gradient(circle at 10% 20%, rgba(108, 92, 231, 0.05) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(255, 118, 117, 0.05) 0%, transparent 20%);
      background-attachment: fixed;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    /* 全局统一容器 */
    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 涂鸦风格徽章 */
    .graffiti-badge {
      display: inline-block;
      padding: 4px 12px;
      background: var(--brand-yellow);
      border: 2px solid var(--border-dark);
      box-shadow: 2px 2px 0px var(--border-dark);
      font-weight: 700;
      font-size: 0.85rem;
      border-radius: 20px;
      text-transform: uppercase;
      margin-bottom: 12px;
    }

    .graffiti-badge.green { background: var(--brand-green); }
    .graffiti-badge.blue { background: var(--brand-blue); }
    .graffiti-badge.pink { background: var(--brand-secondary); color: #fff; }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-weight: 700;
      font-size: 1rem;
      border-radius: var(--radius-sm);
      border: 2px solid var(--border-dark);
      box-shadow: var(--shadow-graffiti);
      transition: all 0.2s ease;
      cursor: pointer;
      background: var(--bg-card);
      color: var(--text-dark);
    }

    .btn-primary {
      background: var(--brand-primary);
      color: #ffffff;
    }

    .btn-secondary {
      background: var(--brand-green);
      color: var(--text-dark);
    }

    .btn-accent {
      background: var(--brand-secondary);
      color: #ffffff;
    }

    .btn:hover {
      transform: translate(-2px, -2px);
      box-shadow: var(--shadow-hover);
    }

    .btn:active {
      transform: translate(2px, 2px);
      box-shadow: 2px 2px 0px var(--border-dark);
    }

    /* 区块通用结构 */
    .section {
      padding: 80px 0;
      border-bottom: 2px dashed rgba(30, 30, 36, 0.15);
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }

    .section-header h2 {
      font-size: 2.2rem;
      margin-bottom: 12px;
      position: relative;
      display: inline-block;
    }

    .section-header h2::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 10%;
      width: 80%;
      height: 8px;
      background: var(--brand-yellow);
      z-index: -1;
      border-radius: 4px;
    }

    .section-header p {
      color: var(--text-muted);
      font-size: 1.05rem;
    }

    /* 顶部导航 */
    .header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(252, 251, 250, 0.95);
      backdrop-filter: blur(8px);
      border-bottom: 2px solid var(--border-dark);
      padding: 12px 0;
    }

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

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .brand-logo img {
      max-height: 40px;
      width: auto;
    }

    /* 按要求强规：.nav-links 的 gap 属性设置为 0 */
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0; 
      list-style: none;
    }

    .nav-links li a {
      padding: 8px 14px;
      font-weight: 600;
      font-size: 0.95rem;
      border-radius: 6px;
      transition: background 0.2s ease;
      display: block;
    }

    .nav-links li a:hover {
      background: var(--brand-yellow);
    }

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

    .mobile-menu-btn {
      display: none;
      background: none;
      border: 2px solid var(--border-dark);
      padding: 6px 10px;
      border-radius: 6px;
      font-weight: bold;
      cursor: pointer;
    }

    /* 首屏 Hero 区域 (严格无图片) */
    .hero-section {
      padding: 90px 0 70px 0;
      background: radial-gradient(circle at 50% 30%, #fff 0%, var(--bg-main) 100%);
      position: relative;
      overflow: hidden;
    }

    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-title {
      font-size: 2.6rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title .highlight {
      background: var(--brand-yellow);
      padding: 2px 8px;
      border-radius: 6px;
      border: 2px solid var(--border-dark);
      box-shadow: 3px 3px 0px var(--border-dark);
      display: inline-block;
    }

    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--text-muted);
      margin-bottom: 35px;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }

    .hero-features-bar {
      display: flex;
      justify-content: center;
      gap: 20px;
      flex-wrap: wrap;
      margin-top: 30px;
    }

    .hero-feature-item {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      box-shadow: var(--shadow-graffiti);
      padding: 10px 18px;
      border-radius: 30px;
      font-size: 0.9rem;
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .hero-feature-item span {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--brand-green);
      display: inline-block;
    }

    /* 数字指标 */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
      margin-top: -30px;
      position: relative;
      z-index: 10;
    }

    .stat-card {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      box-shadow: var(--shadow-graffiti);
      border-radius: var(--radius-main);
      padding: 24px;
      text-align: center;
    }

    .stat-card .num {
      font-size: 2.5rem;
      font-weight: 900;
      color: var(--brand-primary);
      line-height: 1.1;
    }

    .stat-card .label {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: 600;
      margin-top: 4px;
    }

    /* 网格与卡片通用 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 20px;
    }

    .card-item {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      box-shadow: var(--shadow-graffiti);
      border-radius: var(--radius-main);
      padding: 28px;
      transition: all 0.2s ease;
      position: relative;
    }

    .card-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .card-icon {
      width: 50px;
      height: 50px;
      border-radius: 12px;
      border: 2px solid var(--border-dark);
      background: var(--brand-yellow);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 18px;
      box-shadow: 2px 2px 0px var(--border-dark);
    }

    .card-title {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 10px;
    }

    .card-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    /* 平台介绍 / 支持模型标签 */
    .model-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 20px;
    }

    .model-tag {
      padding: 6px 14px;
      background: #f0edff;
      border: 1px solid var(--brand-primary);
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--brand-primary);
    }

    /* 流程步骤 */
    .steps-container {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
      gap: 16px;
    }

    .step-box {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      box-shadow: var(--shadow-graffiti);
      border-radius: var(--radius-main);
      padding: 20px 16px;
      text-align: center;
      position: relative;
    }

    .step-num {
      width: 36px;
      height: 36px;
      background: var(--brand-secondary);
      color: #fff;
      font-weight: 900;
      border-radius: 50%;
      border: 2px solid var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 12px auto;
    }

    /* 对比评测样式 */
    .evaluation-box {
      background: #fff;
      border: 3px solid var(--border-dark);
      box-shadow: var(--shadow-graffiti-lg);
      border-radius: var(--radius-main);
      padding: 30px;
      margin-bottom: 40px;
    }

    .rating-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 2px dashed #eee;
      padding-bottom: 20px;
      margin-bottom: 24px;
      flex-wrap: wrap;
      gap: 15px;
    }

    .score-badge {
      background: var(--brand-yellow);
      border: 2px solid var(--border-dark);
      padding: 10px 20px;
      border-radius: 12px;
      box-shadow: var(--shadow-graffiti);
      text-align: center;
    }

    .score-badge .score {
      font-size: 2rem;
      font-weight: 900;
      color: var(--text-dark);
      line-height: 1;
    }

    .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: 14px 18px;
      border: 2px solid var(--border-dark);
    }

    .compare-table th {
      background: var(--brand-blue);
      color: var(--text-dark);
      font-weight: 800;
    }

    .compare-table tr:nth-child(even) {
      background: #fafafa;
    }

    .compare-table .highlight-cell {
      background: #eef9f5;
      font-weight: 700;
      color: #00b894;
    }

    /* 案例展示 */
    .case-media-box {
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-main);
      overflow: hidden;
      box-shadow: var(--shadow-graffiti);
      background: #fff;
    }

    .case-media-box img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      display: block;
    }

    .case-info {
      padding: 18px;
    }

    /* Token 比价 */
    .price-card {
      background: #fff;
      border: 2px solid var(--border-dark);
      box-shadow: var(--shadow-graffiti);
      border-radius: var(--radius-main);
      padding: 24px;
    }

    .price-badge {
      float: right;
      background: var(--brand-green);
      font-size: 0.75rem;
      padding: 2px 8px;
      border: 1px solid var(--border-dark);
      border-radius: 4px;
      font-weight: bold;
    }

    /* 评论卡片 */
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 16px;
    }

    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--brand-yellow);
      border: 2px solid var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
    }

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

    .faq-item {
      background: #fff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-graffiti);
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 24px;
      font-weight: 800;
      font-size: 1.05rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #fff;
      user-select: none;
    }

    .faq-question::after {
      content: '+';
      font-size: 1.4rem;
      font-weight: 900;
      transition: transform 0.2s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 24px;
      color: var(--text-muted);
      border-top: 0px solid transparent;
      background: #fafafa;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 24px;
      border-top: 2px dashed #ddd;
    }

    /* 文章列表 */
    .article-link-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .article-link-item {
      padding: 12px 18px;
      background: #fff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-graffiti);
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: all 0.2s ease;
    }

    .article-link-item:hover {
      transform: translateX(4px);
      background: var(--brand-yellow);
    }

    /* 表单区域 */
    .form-container {
      max-width: 700px;
      margin: 0 auto;
      background: #fff;
      border: 3px solid var(--border-dark);
      box-shadow: var(--shadow-graffiti-lg);
      border-radius: var(--radius-main);
      padding: 36px;
    }

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

    .form-group label {
      display: block;
      font-weight: 800;
      margin-bottom: 8px;
      font-size: 0.95rem;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-sm);
      font-size: 1rem;
      background: #fafafa;
      outline: none;
    }

    .form-control:focus {
      background: #fff;
      border-color: var(--brand-primary);
      box-shadow: 2px 2px 0px var(--brand-primary);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 120px;
    }

    /* 加盟代理模块 */
    .agency-banner {
      background: linear-gradient(135deg, #ffeaa7 0%, #55efc4 100%);
      border: 3px solid var(--border-dark);
      box-shadow: var(--shadow-graffiti-lg);
      border-radius: var(--radius-main);
      padding: 40px;
      text-align: center;
    }

    .agency-banner h3 {
      font-size: 2rem;
      font-weight: 900;
      margin-bottom: 12px;
    }

    /* 友情链接与页脚 */
    .footer {
      background: #1e1e24;
      color: #ffffff;
      padding: 60px 0 30px 0;
      border-top: 3px solid var(--border-dark);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      font-size: 1.1rem;
      color: var(--brand-yellow);
      margin-bottom: 20px;
      border-bottom: 2px solid rgba(255,255,255,0.1);
      padding-bottom: 8px;
    }

    .footer-col p, .footer-col li {
      color: #b2bec3;
      font-size: 0.9rem;
      margin-bottom: 8px;
      list-style: none;
    }

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

    .friend-links a {
      color: #dfe6e9;
      background: rgba(255,255,255,0.1);
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 0.85rem;
      transition: background 0.2s;
    }

    .friend-links a:hover {
      background: var(--brand-primary);
      color: #fff;
    }

    .footer-bottom {
      text-align: center;
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 24px;
      color: #b2bec3;
      font-size: 0.85rem;
    }

    /* 浮动客服 */
    .float-kefu {
      position: fixed;
      right: 20px;
      bottom: 20px;
      z-index: 999;
      background: var(--brand-yellow);
      border: 2px solid var(--border-dark);
      box-shadow: var(--shadow-graffiti);
      border-radius: 50px;
      padding: 10px 18px;
      font-weight: 800;
      display: flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
      transition: transform 0.2s;
    }

    .float-kefu:hover {
      transform: scale(1.05);
    }

    .kefu-modal {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.5);
      z-index: 2000;
      align-items: center;
      justify-content: center;
    }

    .kefu-modal-content {
      background: #fff;
      border: 3px solid var(--border-dark);
      box-shadow: var(--shadow-graffiti-lg);
      border-radius: var(--radius-main);
      padding: 30px;
      max-width: 320px;
      text-align: center;
      position: relative;
    }

    .close-modal {
      position: absolute;
      top: 10px;
      right: 14px;
      font-size: 1.5rem;
      cursor: pointer;
      font-weight: bold;
    }

    /* 响应式适配 */
    @media (max-width: 768px) {
      .hero-title { font-size: 1.9rem; }
      .hero-subtitle { font-size: 1rem; }
      .nav-links { display: none; }
      .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 2px solid var(--border-dark);
        padding: 16px;
      }
      .mobile-menu-btn { display: block; }
      .section-header h2 { font-size: 1.7rem; }
    }