:root {
      --primary-yellow: #FFD000;
      --primary-hover: #F2C200;
      --accent-yellow-light: #FFF9DB;
      --accent-gold: #D97706;
      --bg-main: #FAFAFA;
      --bg-card: #FFFFFF;
      --text-dark: #1E293B;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --border-color: #E2E8F0;
      --border-accent: #FFE082;
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 8px 24px rgba(234, 179, 8, 0.12);
      --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.08);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.28s ease;
    }

    * {
      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-main);
      color: var(--text-dark);
      line-height: 1.65;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

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

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

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

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

    .ai-page-logo {
      height: 38px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-dark);
      letter-spacing: -0.5px;
    }

    .brand-badge {
      background: var(--primary-yellow);
      color: #111;
      font-size: 0.72rem;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 20px;
      border: 1px solid rgba(0,0,0,0.05);
    }

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

    .nav-links li a {
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-dark);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }

    .nav-links li a:hover {
      background-color: var(--accent-yellow-light);
      color: var(--accent-gold);
    }

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

    .btn-top-portal {
      background: #111827;
      color: #FFFFFF;
      font-size: 0.88rem;
      font-weight: 600;
      padding: 8px 18px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .btn-top-portal:hover {
      background: #374151;
      transform: translateY(-1px);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 6px 10px;
      font-size: 1.25rem;
      cursor: pointer;
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 700;
      padding: 12px 28px;
      border-radius: var(--radius-sm);
      border: none;
      cursor: pointer;
      transition: var(--transition);
      font-size: 0.98rem;
    }

    .btn-primary {
      background: var(--primary-yellow);
      color: #111827;
      box-shadow: 0 4px 14px rgba(255, 208, 0, 0.4);
    }

    .btn-primary:hover {
      background: var(--primary-hover);
      box-shadow: 0 6px 20px rgba(255, 208, 0, 0.55);
      transform: translateY(-2px);
    }

    .btn-secondary {
      background: #FFFFFF;
      color: var(--text-dark);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .btn-secondary:hover {
      background: var(--accent-yellow-light);
      border-color: var(--primary-yellow);
      transform: translateY(-2px);
    }

    /* 通用章节规范 */
    .section {
      padding: 80px 0;
      position: relative;
    }

    .section-alt {
      background: #F8FAFC;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 52px;
    }

    .section-eyebrow {
      display: inline-block;
      background: var(--accent-yellow-light);
      color: var(--accent-gold);
      border: 1px solid var(--border-accent);
      font-size: 0.82rem;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 30px;
      margin-bottom: 12px;
      text-transform: uppercase;
    }

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

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 首屏 HERO 区域 - 严格无图规范 */
    .hero-section {
      padding: 90px 0 70px;
      background: radial-gradient(circle at 50% 10%, rgba(255, 208, 0, 0.22) 0%, rgba(250, 250, 250, 0) 70%), #FAFAFA;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid rgba(0,0,0,0.04);
    }

    .hero-content {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #FFFFFF;
      border: 1px solid var(--border-accent);
      padding: 6px 18px;
      border-radius: 40px;
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--text-dark);
      box-shadow: 0 2px 10px rgba(255, 208, 0, 0.15);
      margin-bottom: 24px;
    }

    .hero-tag-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #EAB308;
      box-shadow: 0 0 8px #EAB308;
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.25;
      letter-spacing: -1px;
      color: #0F172A;
      margin-bottom: 22px;
    }

    .hero-title .highlight {
      background: linear-gradient(180deg, transparent 65%, var(--primary-yellow) 65%);
      display: inline-block;
      padding: 0 4px;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto 34px;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 20px;
    }

    .stat-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-top: 4px solid var(--primary-yellow);
      border-radius: var(--radius-md);
      padding: 22px 16px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

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

    .stat-num {
      font-size: 1.95rem;
      font-weight: 900;
      color: #111827;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 支持模型滚动/标签矩阵 */
    .models-bar {
      background: #FFFFFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 26px 0;
    }

    .models-title {
      font-size: 0.9rem;
      text-align: center;
      color: var(--text-muted);
      font-weight: 700;
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .models-tags-cloud {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px 12px;
      max-width: 1100px;
      margin: 0 auto;
    }

    .model-tag {
      background: #F1F5F9;
      color: #334155;
      font-size: 0.82rem;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 6px;
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }

    .model-tag:hover {
      background: var(--primary-yellow);
      color: #111;
      border-color: #EAB308;
    }

    /* 平台核心能力介绍 */
    .about-intro-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 44px;
      box-shadow: var(--shadow-sm);
      margin-bottom: 36px;
    }

    .about-lead {
      font-size: 1.15rem;
      line-height: 1.8;
      color: #334155;
      margin-bottom: 28px;
    }

    .platform-capabilities-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .cap-item {
      background: #FAFAFA;
      border: 1px solid #F1F5F9;
      border-radius: var(--radius-md);
      padding: 22px;
      transition: var(--transition);
    }

    .cap-item:hover {
      border-color: var(--border-accent);
      background: var(--accent-yellow-light);
    }

    .cap-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: var(--primary-yellow);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 1.25rem;
      margin-bottom: 14px;
      color: #111;
    }

    .cap-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-dark);
    }

    .cap-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 场景矩阵卡片网格 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .feature-card:hover {
      border-color: var(--primary-yellow);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }

    .feature-top {
      margin-bottom: 16px;
    }

    .feature-badge {
      display: inline-block;
      background: #FEF3C7;
      color: #92400E;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 4px;
      margin-bottom: 12px;
    }

    .feature-title {
      font-size: 1.18rem;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 10px;
    }

    .feature-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    .feature-link {
      margin-top: 18px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.88rem;
      font-weight: 700;
      color: #B45309;
    }

    .feature-link:hover {
      color: #D97706;
      text-decoration: underline;
    }

    /* 标准流程时间线 */
    .timeline-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      position: relative;
      transition: var(--transition);
    }

    .step-card:hover {
      border-color: var(--primary-yellow);
      box-shadow: var(--shadow-sm);
    }

    .step-number {
      width: 40px;
      height: 40px;
      background: var(--primary-yellow);
      color: #111;
      font-size: 1.15rem;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
    }

    .step-title {
      font-size: 1.08rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 0.86rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 对比评测 - 突出 9.9分 五星 */
    .eval-container {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .eval-highlight-box {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #FFFBEB 0%, #FEF3C7 100%);
      border: 1px solid #FDE68A;
      border-radius: var(--radius-md);
      padding: 24px 32px;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 16px;
    }

    .eval-score-wrap {
      display: flex;
      align-items: baseline;
      gap: 10px;
    }

    .score-big {
      font-size: 3.2rem;
      font-weight: 900;
      color: #92400E;
      line-height: 1;
    }

    .score-scale {
      font-size: 1.25rem;
      color: #B45309;
      font-weight: 700;
    }

    .eval-stars {
      color: #F59E0B;
      font-size: 1.35rem;
      letter-spacing: 2px;
    }

    .eval-tagline {
      font-size: 1.05rem;
      font-weight: 700;
      color: #78350F;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }

    .compare-table th {
      background: #F8FAFC;
      color: #475569;
      font-weight: 700;
    }

    .compare-table tr:hover td {
      background: #FFFDF5;
    }

    .td-highlight {
      font-weight: 700;
      color: #92400E;
      background: #FFFBEB;
    }

    /* 案例图片展示 */
    .cases-gallery {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-yellow);
    }

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #F1F5F9;
    }

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

    .case-card:hover .case-img-wrap img {
      transform: scale(1.05);
    }

    .case-body {
      padding: 20px;
    }

    .case-title {
      font-size: 1.05rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .case-meta {
      font-size: 0.84rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* Token 比价看板 */
    .token-pricing-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .token-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      transition: var(--transition);
      position: relative;
    }

    .token-card.recommended {
      border: 2px solid var(--primary-yellow);
      box-shadow: var(--shadow-md);
    }

    .token-card-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary-yellow);
      color: #111;
      font-size: 0.72rem;
      font-weight: 800;
      padding: 2px 10px;
      border-radius: 12px;
    }

    .token-name {
      font-size: 1.15rem;
      font-weight: 800;
      margin-top: 6px;
      margin-bottom: 8px;
    }

    .token-price {
      font-size: 1.8rem;
      font-weight: 900;
      color: #92400E;
      margin-bottom: 6px;
    }

    .token-unit {
      font-size: 0.78rem;
      color: var(--text-muted);
      margin-bottom: 16px;
    }

    .token-features {
      list-style: none;
      text-align: left;
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 2;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }

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

    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-question {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-question:hover {
      background: #F8FAFC;
    }

    .faq-toggle-icon {
      font-size: 1.3rem;
      font-weight: 400;
      transition: var(--transition);
      color: #64748B;
    }

    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
      color: #D97706;
    }

    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
    }

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

    /* 用户评论卡片 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .review-card:hover {
      border-color: var(--border-accent);
      transform: translateY(-3px);
    }

    .review-header {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 14px;
    }

    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-yellow);
      color: #111;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.05rem;
    }

    .reviewer-info h4 {
      font-size: 0.98rem;
      font-weight: 700;
    }

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

    .review-quote {
      font-size: 0.9rem;
      color: #334155;
      line-height: 1.65;
    }

    /* 需求匹配与联系我们表单 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1.25fr;
      gap: 40px;
      align-items: start;
    }

    .contact-info-panel {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .info-group {
      margin-bottom: 24px;
    }

    .info-label {
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--text-muted);
      text-transform: uppercase;
      margin-bottom: 6px;
    }

    .info-value {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-dark);
    }

    .qr-box {
      margin-top: 24px;
      padding: 20px;
      background: #FAFAFA;
      border: 1px dashed var(--border-color);
      border-radius: var(--radius-md);
      text-align: center;
    }

    .qr-box img {
      width: 140px;
      height: 140px;
      margin: 0 auto 12px;
      border-radius: 8px;
    }

    .form-panel {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

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

    .form-group {
      margin-bottom: 18px;
    }

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

    .form-label {
      display: block;
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      background: #FAFAFA;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      background: #FFFFFF;
      border-color: #EAB308;
      box-shadow: 0 0 0 3px rgba(255, 208, 0, 0.25);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    /* 行业资讯与文章 */
    .article-section-content {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
    }

    .articles-links-box {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 20px;
    }

    .article-pill {
      background: #F8FAFC;
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      border-radius: 30px;
      font-size: 0.88rem;
      font-weight: 600;
      color: #334155;
      transition: var(--transition);
    }

    .article-pill:hover {
      background: var(--accent-yellow-light);
      border-color: var(--primary-yellow);
      color: #92400E;
    }

    /* 友情链接与页脚 */
    .site-footer {
      background: #111827;
      color: #94A3B8;
      padding: 60px 0 30px;
      font-size: 0.9rem;
      border-top: 4px solid var(--primary-yellow);
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 36px;
      padding-bottom: 40px;
      border-bottom: 1px solid #1F2937;
    }

    .footer-brand h3 {
      color: #FFFFFF;
      font-size: 1.35rem;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .footer-brand p {
      color: #94A3B8;
      line-height: 1.6;
      font-size: 0.88rem;
    }

    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-col ul li a {
      color: #94A3B8;
    }

    .footer-col ul li a:hover {
      color: var(--primary-yellow);
    }

    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px 20px;
      margin-top: 14px;
    }

    .friend-links-wrap a {
      color: #CBD5E1;
      font-size: 0.88rem;
      transition: var(--transition);
    }

    .friend-links-wrap a:hover {
      color: var(--primary-yellow);
      text-decoration: underline;
    }

    .footer-bottom {
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.82rem;
      color: #64748B;
      flex-wrap: wrap;
      gap: 12px;
    }

    .ai-page-home-link {
      color: var(--primary-yellow);
      font-weight: 700;
    }

    /* 浮动客服小工具 */
    .float-service-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 1000;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary-yellow);
      color: #111;
      border: 1px solid #EAB308;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 0.95rem;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
      cursor: pointer;
      transition: var(--transition);
    }

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

    /* 响应式媒体查询 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.2rem;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .platform-capabilities-grid,
      .features-grid,
      .cases-gallery,
      .reviews-grid,
      .token-pricing-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .timeline-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr 1fr;
      }
      .nav-links {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links.active-mobile {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        border-bottom: 1px solid var(--border-color);
        align-items: flex-start;
      }
    }

    @media (max-width: 640px) {
      .hero-title {
        font-size: 1.75rem;
      }
      .section {
        padding: 50px 0;
      }
      .section-title {
        font-size: 1.6rem;
      }
      .hero-stats-grid {
        grid-template-columns: 1fr;
      }
      .platform-capabilities-grid,
      .features-grid,
      .cases-gallery,
      .reviews-grid,
      .token-pricing-grid,
      .timeline-steps {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .eval-highlight-box {
        flex-direction: column;
        text-align: center;
      }
      .eval-score-wrap {
        justify-content: center;
      }
    }