:root {
      --primary: #5c3bf6;
      --primary-rgb: 92, 59, 246;
      --secondary: #ff3b80;
      --accent: #00d2ff;
      --accent-warm: #ff8e3c;
      --accent-green: #00c875;
      --text-main: #181c32;
      --text-muted: #5e6278;
      --text-sub: #7e8299;
      --bg-light: #fbfbfe;
      --bg-card: #ffffff;
      --border-color: #edeaf8;
      --shadow-sm: 0 4px 14px rgba(92, 59, 246, 0.05);
      --shadow-md: 0 10px 30px rgba(92, 59, 246, 0.08);
      --shadow-lg: 0 18px 45px rgba(25, 20, 60, 0.1);
      --rainbow-grad: linear-gradient(135deg, #5c3bf6 0%, #ff3b80 35%, #ff8e3c 70%, #00d2ff 100%);
      --soft-rainbow: linear-gradient(120deg, rgba(92,59,246,0.06) 0%, rgba(255,59,128,0.06) 40%, rgba(0,210,255,0.06) 100%);
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      background-image: 
        radial-gradient(circle at 12% 18%, rgba(92, 59, 246, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 88% 30%, rgba(255, 59, 128, 0.04) 0%, transparent 45%),
        radial-gradient(circle at 50% 80%, rgba(0, 210, 255, 0.04) 0%, transparent 50%);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: var(--primary);
      text-decoration: none;
      transition: all 0.25s ease;
    }

    a:hover {
      color: var(--secondary);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 15px rgba(0, 0, 0, 0.03);
    }

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

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

    .brand-wrap .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      background: linear-gradient(90deg, #5c3bf6, #ff3b80);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

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

    .nav-links li a {
      font-size: 0.92rem;
      font-weight: 600;
      color: #3f4254;
      padding: 8px 11px;
      border-radius: 6px;
      display: block;
      transition: color 0.2s, background-color 0.2s;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background-color: rgba(92, 59, 246, 0.07);
    }

    .nav-action {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 8px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      text-align: center;
    }

    .btn-gradient {
      background: var(--rainbow-grad);
      color: #ffffff !important;
      box-shadow: 0 4px 15px rgba(92, 59, 246, 0.3);
    }

    .btn-gradient:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(255, 59, 128, 0.35);
    }

    .btn-outline {
      background: #ffffff;
      border-color: #d1c8f8;
      color: var(--primary);
    }

    .btn-outline:hover {
      background: rgba(92, 59, 246, 0.05);
      border-color: var(--primary);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 4px;
    }

    /* 区域公用类 */
    section {
      padding: 60px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 45px auto;
    }

    .section-badge {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      padding: 4px 14px;
      border-radius: 20px;
      background: rgba(92, 59, 246, 0.08);
      color: var(--primary);
      margin-bottom: 12px;
      border: 1px solid rgba(92, 59, 246, 0.15);
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 首屏 Hero：严禁出现任何图片，斑斓彩调风几何与动效装饰 */
    .hero-section {
      padding: 85px 0 65px;
      position: relative;
      overflow: hidden;
      background: linear-gradient(180deg, rgba(255,255,255,0.9) 0%, rgba(246,244,255,0.7) 100%);
    }

    .hero-inner {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    .hero-pretitle {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      border-radius: 30px;
      background: #ffffff;
      border: 1px solid #e2dcfc;
      box-shadow: 0 4px 15px rgba(92, 59, 246, 0.08);
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 24px;
    }

    .hero-pretitle-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-warm);
      animation: pulseDot 2s infinite ease-in-out;
    }

    @keyframes pulseDot {
      0%, 100% { transform: scale(1); opacity: 1; }
      50% { transform: scale(1.4); opacity: 0.5; }
    }

    /* H1 要求字数控制在20字以内 */
    .hero-title {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.22;
      color: var(--text-main);
      margin-bottom: 22px;
      letter-spacing: -1px;
    }

    .hero-highlight {
      background: var(--rainbow-grad);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.18rem;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto 36px;
      line-height: 1.75;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .btn-hero-main {
      font-size: 1.1rem;
      padding: 14px 34px;
      border-radius: 10px;
      font-weight: 700;
    }

    /* 首屏数据指标卡片（无图片，纯几何与斑斓线条） */
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 20px;
    }

    .metric-card {
      background: #ffffff;
      padding: 22px 18px;
      border-radius: 14px;
      border: 1px solid rgba(220, 215, 250, 0.7);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      position: relative;
      overflow: hidden;
    }

    .metric-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: var(--rainbow-grad);
    }

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

    .metric-val {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
      font-family: Arial, sans-serif;
    }

    .metric-val span {
      font-size: 1.1rem;
      color: var(--secondary);
    }

    .metric-label {
      font-size: 0.88rem;
      color: var(--text-sub);
      font-weight: 600;
    }

    /* 平台支持模型跑马灯标签 */
    .model-tags-bar {
      margin-top: 40px;
      padding: 16px 20px;
      background: #ffffff;
      border-radius: 12px;
      border: 1px dashed #d5d0f5;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }

    .model-tags-title {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary);
      margin-right: 6px;
    }

    .model-tag {
      font-size: 0.76rem;
      padding: 3px 10px;
      border-radius: 15px;
      background: #f4f2ff;
      color: #4b4478;
      font-weight: 600;
      border: 1px solid #e3e0fb;
    }

    /* 概览/关于我们卡片 */
    .about-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .about-card {
      background: #ffffff;
      border-radius: 16px;
      padding: 32px 26px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .about-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: #d1c5fc;
    }

    .card-icon {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
      background: var(--soft-rainbow);
      border: 1px solid rgba(92, 59, 246, 0.15);
      color: var(--primary);
    }

    .about-card h3 {
      font-size: 1.22rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .about-card p {
      color: var(--text-muted);
      font-size: 0.94rem;
      line-height: 1.68;
    }

    /* AIGC 服务能力网格（主打场景） */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .service-card {
      background: #ffffff;
      border-radius: 14px;
      padding: 26px 22px;
      border: 1px solid var(--border-color);
      transition: all 0.28s ease;
      position: relative;
      overflow: hidden;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #c7bbf8;
    }

    .service-badge-pill {
      position: absolute;
      top: 18px;
      right: 18px;
      font-size: 0.72rem;
      padding: 2px 9px;
      border-radius: 10px;
      font-weight: 700;
      background: rgba(255, 59, 128, 0.1);
      color: var(--secondary);
    }

    .service-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .service-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.62;
    }

    /* 一站式制作工作流 */
    .workflow-flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .flow-step-card {
      background: #ffffff;
      border-radius: 14px;
      padding: 26px 20px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .step-number {
      font-size: 2.2rem;
      font-weight: 900;
      color: #e5e0fb;
      line-height: 1;
      margin-bottom: 10px;
      font-family: Arial, sans-serif;
    }

    .flow-step-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .flow-step-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 行业方案与图文 */
    .solution-block {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
      margin-bottom: 40px;
      background: #ffffff;
      border-radius: 16px;
      padding: 32px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .solution-block.reverse {
      grid-template-columns: 1fr 1fr;
    }

    .solution-img-box {
      border-radius: 12px;
      overflow: hidden;
      background: #f1edfe;
      border: 1px solid #e3defa;
    }

    .solution-img-box img {
      width: 100%;
      height: 280px;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .solution-img-box:hover img {
      transform: scale(1.03);
    }

    .solution-info h3 {
      font-size: 1.45rem;
      font-weight: 800;
      margin-bottom: 14px;
      color: var(--text-main);
    }

    .solution-info p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 18px;
    }

    .solution-features {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
    }

    .solution-features li {
      font-size: 0.88rem;
      color: #3b3f5c;
      display: flex;
      align-items: center;
      gap: 6px;
      font-weight: 600;
    }

    .solution-features li::before {
      content: "✓";
      color: var(--accent-green);
      font-weight: bold;
    }

    /* 案例中心展示 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: #ffffff;
      border-radius: 14px;
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .case-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }

    .case-media {
      height: 190px;
      overflow: hidden;
      background: #f8f7ff;
    }

    .case-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .case-body {
      padding: 22px;
    }

    .case-tag {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      background: rgba(92, 59, 246, 0.08);
      padding: 3px 10px;
      border-radius: 6px;
      margin-bottom: 10px;
    }

    .case-body h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .case-body p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 对比评测板块：五星、评分9.9分、满分10分 */
    .review-score-banner {
      background: linear-gradient(135deg, #f8f6ff 0%, #fff2f7 50%, #f0faff 100%);
      border: 1px solid #e4dcfb;
      border-radius: 16px;
      padding: 28px 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      box-shadow: var(--shadow-sm);
    }

    .review-score-main {
      display: flex;
      align-items: center;
      gap: 22px;
    }

    .score-big {
      font-size: 3.5rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
      font-family: Arial, sans-serif;
    }

    .score-big span {
      font-size: 1.2rem;
      color: var(--text-sub);
    }

    .score-stars {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .stars-render {
      color: #ff9d00;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }

    .score-remark {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .comparison-table-wrapper {
      background: #ffffff;
      border-radius: 14px;
      border: 1px solid var(--border-color);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

    .comparison-table th, 
    .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f0ecfc;
      font-size: 0.92rem;
    }

    .comparison-table th {
      background: #faf9fe;
      color: var(--text-main);
      font-weight: 700;
    }

    .comparison-table td.highlight {
      background: rgba(92, 59, 246, 0.03);
      color: var(--primary);
      font-weight: 700;
    }

    /* Token 比价板块 */
    .token-price-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .price-card {
      background: #ffffff;
      border-radius: 14px;
      padding: 26px 22px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: all 0.25s ease;
    }

    .price-card.featured {
      border: 2px solid var(--primary);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      position: relative;
    }

    .price-card-tag {
      display: inline-block;
      background: var(--rainbow-grad);
      color: #ffffff;
      font-size: 0.72rem;
      font-weight: 700;
      padding: 3px 12px;
      border-radius: 12px;
      margin-bottom: 12px;
    }

    .price-card h4 {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .price-rate {
      font-size: 1.85rem;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 14px;
    }

    .price-rate span {
      font-size: 0.85rem;
      font-weight: normal;
      color: var(--text-muted);
    }

    .price-features {
      list-style: none;
      text-align: left;
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .price-features li {
      padding: 6px 0;
      border-bottom: 1px dashed #f0edf9;
    }

    /* 服务网络与代理加盟 */
    .network-agent-box {
      background: linear-gradient(135deg, #ffffff 0%, #f6f3ff 100%);
      border: 1px solid #ded6fa;
      border-radius: 16px;
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

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

    .perk-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 18px 16px;
      text-align: center;
    }

    .perk-item h5 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .perk-item p {
      font-size: 0.84rem;
      color: var(--text-sub);
    }

    /* 6条用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .review-card {
      background: #ffffff;
      border-radius: 14px;
      padding: 24px 22px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-comment {
      font-size: 0.92rem;
      color: #4a4e69;
      line-height: 1.68;
      margin-bottom: 18px;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-top: 14px;
      border-top: 1px solid #f4f0fc;
    }

    .reviewer-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--soft-rainbow);
      border: 1px solid #d5cbfc;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: var(--primary);
      font-size: 1rem;
    }

    .reviewer-info h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .reviewer-info p {
      font-size: 0.8rem;
      color: var(--text-sub);
    }

    /* 常见问题 FAQ 折叠 */
    .faq-accordion {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: all 0.25s ease;
    }

    .faq-item.active {
      border-color: #c4b6fc;
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      padding: 18px 22px;
      cursor: pointer;
      font-weight: 700;
      font-size: 1rem;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

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

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
      background: #faf9ff;
    }

    .faq-answer-inner {
      padding: 0 22px 18px 22px;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* AI 百科 & 资讯 & 文章链接 */
    .encyclopedia-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-bottom: 30px;
    }

    .wiki-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 20px;
    }

    .wiki-card h5 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .wiki-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .articles-link-panel {
      background: #ffffff;
      border-radius: 12px;
      border: 1px solid var(--border-color);
      padding: 22px;
      box-shadow: var(--shadow-sm);
    }

    .articles-link-panel h4 {
      font-size: 1.08rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .articles-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .articles-list a {
      font-size: 0.88rem;
      padding: 6px 14px;
      background: #f5f3ff;
      border: 1px solid #ded9fb;
      border-radius: 6px;
      color: #4c4476;
    }

    .articles-list a:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
    }

    /* 需求匹配与表单 */
    .contact-form-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 36px 32px;
      box-shadow: var(--shadow-md);
      max-width: 820px;
      margin: 0 auto;
    }

    .contact-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

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

    .form-group label {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      padding: 12px 14px;
      border: 1px solid #dcd7f5;
      border-radius: 8px;
      font-size: 0.92rem;
      color: var(--text-main);
      background: #fbfbfe;
      outline: none;
      transition: border-color 0.2s;
      width: 100%;
      font-family: inherit;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      background: #ffffff;
    }

    .form-group textarea {
      resize: vertical;
      min-height: 100px;
    }

    /* 页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 55px 0 25px;
      margin-top: 50px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 35px;
    }

    .footer-col h5 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .footer-col p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.68;
      margin-bottom: 8px;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 8px;
    }

    .footer-links a {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    .footer-links a:hover {
      color: var(--primary);
    }

    .footer-qr-wrap {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .footer-qr-wrap img {
      width: 95px;
      height: 95px;
      border-radius: 8px;
      border: 1px solid var(--border-color);
      padding: 4px;
      background: #ffffff;
    }

    .friend-links-bar {
      padding: 18px 0;
      border-top: 1px solid #f2effc;
      border-bottom: 1px solid #f2effc;
      margin-bottom: 22px;
      font-size: 0.86rem;
      color: var(--text-muted);
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 8px;
    }

    .friend-links-list a {
      color: #646882;
    }

    .friend-links-list a:hover {
      color: var(--primary);
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.84rem;
      color: var(--text-sub);
    }

    /* 悬浮快捷面板 */
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      cursor: pointer;
      transition: all 0.25s ease;
      font-size: 1.1rem;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.08);
    }

    /* 响应式样式规范 */
    @media (max-width: 992px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 18px 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        gap: 0; /* 保持gap属性为0 */
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        padding: 10px 12px;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2.3rem;
      }
      .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid,
      .services-grid,
      .cases-grid,
      .token-price-grid,
      .reviews-grid,
      .encyclopedia-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-flow {
        grid-template-columns: repeat(2, 1fr);
      }
      .solution-block {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .agent-perks {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 640px) {
      .hero-title {
        font-size: 1.85rem;
      }
      .hero-metrics {
        grid-template-columns: 1fr;
      }
      .about-grid,
      .services-grid,
      .cases-grid,
      .token-price-grid,
      .reviews-grid,
      .encyclopedia-grid,
      .workflow-flow {
        grid-template-columns: 1fr;
      }
      .contact-form {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .agent-perks {
        grid-template-columns: 1fr;
      }
      .review-score-banner {
        flex-direction: column;
        gap: 16px;
        text-align: center;
      }
      .review-score-main {
        flex-direction: column;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
    }