:root {
      --primary: #F59E0B;
      --primary-bright: #FBBF24;
      --primary-light: #FEF3C7;
      --primary-dark: #D97706;
      --accent-yellow: #FACC15;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #64748B;
      --bg-page: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-alt: #F1F5F9;
      --border-color: #E2E8F0;
      --border-focus: #F59E0B;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
      --shadow-yellow: 0 10px 25px -5px rgba(245, 158, 11, 0.25);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --radius-full: 9999px;
      --container-max: 1200px;
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      font-size: 16px;
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }

    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-page);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

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

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

    /* 顶部通栏导航 */
    .header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    }

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

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

    .brand-area .ai-page-logo {
      height: 42px;
      width: auto;
    }

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

    .brand-badge {
      background: var(--accent-yellow);
      color: #78350F;
      font-size: 0.7rem;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: var(--radius-full);
      text-transform: uppercase;
    }

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

    .nav-item a {
      display: block;
      padding: 8px 14px;
      font-size: 0.93rem;
      font-weight: 600;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

    .nav-item a:hover {
      color: var(--text-main);
      background: var(--primary-light);
    }

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

    .btn-nav-primary {
      background: linear-gradient(135deg, var(--primary-bright), var(--primary));
      color: #451A03;
      font-weight: 700;
      font-size: 0.9rem;
      padding: 9px 20px;
      border-radius: var(--radius-full);
      box-shadow: 0 2px 8px rgba(245, 158, 11, 0.35);
      border: 1px solid rgba(255,255,255,0.4);
    }

    .btn-nav-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 4px 12px rgba(245, 158, 11, 0.45);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 8px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-size: 1.25rem;
    }

    /* 鲜黄风格装饰条 */
    .yellow-glow-bar {
      height: 4px;
      background: linear-gradient(90deg, #FDE047, #F59E0B, #D97706, #FDE047);
      background-size: 200% 100%;
      animation: barGlow 4s linear infinite;
    }

    @keyframes barGlow {
      0% { background-position: 0% 50%; }
      100% { background-position: 200% 50%; }
    }

    /* 首屏 HERO 区域 - 严禁出现任何图片 */
    .hero-section {
      background: radial-gradient(circle at 50% -20%, #FEF9C3 0%, #FFFFFF 65%, #F8FAFC 100%);
      padding: 80px 0 60px;
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }

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

    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #FEF08A;
      color: #854D0E;
      font-weight: 700;
      font-size: 0.85rem;
      padding: 6px 16px;
      border-radius: var(--radius-full);
      border: 1px solid #FDE047;
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }

    .hero-title {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-title span {
      background: linear-gradient(120deg, #D97706, #B45309);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      position: relative;
      display: inline-block;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 36px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

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

    .btn-main-yellow {
      background: linear-gradient(135deg, #FDE047 0%, #F59E0B 100%);
      color: #451A03;
      font-size: 1.1rem;
      font-weight: 800;
      padding: 15px 36px;
      border-radius: var(--radius-full);
      box-shadow: var(--shadow-yellow);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: 2px solid #FEF08A;
      cursor: pointer;
    }

    .btn-main-yellow:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 28px -4px rgba(245, 158, 11, 0.4);
    }

    .btn-secondary {
      background: #FFFFFF;
      color: var(--text-main);
      font-size: 1.05rem;
      font-weight: 700;
      padding: 15px 32px;
      border-radius: var(--radius-full);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .btn-secondary:hover {
      background: var(--bg-alt);
      border-color: #CBD5E1;
    }

    /* 首屏数据指标卡片组 - CSS 构建，无图片 */
    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .metric-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 16px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      border-top: 3px solid var(--primary);
    }

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

    .metric-num {
      font-size: 1.8rem;
      font-weight: 900;
      color: #B45309;
      line-height: 1.2;
      margin-bottom: 4px;
    }

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

    /* 通用Section结构 */
    .section-block {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .section-block:nth-child(even) {
      background: #FAFAFA;
    }

    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }

    .section-tag {
      display: inline-block;
      background: var(--primary-light);
      color: #92400E;
      font-size: 0.8rem;
      font-weight: 800;
      padding: 4px 12px;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 模型矩阵徽章墙 */
    .model-tags-wrapper {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 30px;
    }

    .model-pill {
      background: #FFFFFF;
      border: 1px solid #E2E8F0;
      color: #1E293B;
      font-size: 0.88rem;
      font-weight: 600;
      padding: 8px 16px;
      border-radius: var(--radius-full);
      box-shadow: 0 1px 3px rgba(0,0,0,0.04);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .model-pill::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
    }

    /* 服务卡片栅格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      overflow: hidden;
    }

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

    .service-card::after {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, #FACC15, #F59E0B);
      opacity: 0;
      transition: var(--transition);
    }

    .service-card:hover::after {
      opacity: 1;
    }

    .service-icon-box {
      width: 50px;
      height: 50px;
      border-radius: var(--radius-md);
      background: var(--primary-light);
      color: #B45309;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 1.3rem;
      margin-bottom: 20px;
      border: 1px solid #FDE047;
    }

    .service-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .service-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }

    .service-features {
      list-style: none;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
      margin-top: auto;
    }

    .service-features li {
      font-size: 0.85rem;
      color: #334155;
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .service-features li::before {
      content: "✓";
      color: #D97706;
      font-weight: bold;
    }

    /* 图文展示区（横版素材图与宣传图） */
    .media-showcase-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
      align-items: center;
      margin-top: 40px;
    }

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

    .media-card .img-container {
      width: 100%;
      background: #F1F5F9;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }

    .media-info {
      padding: 20px;
    }

    .media-info h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .media-info p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 对比评测表格板块 */
    .rating-banner {
      background: linear-gradient(135deg, #FFFBEB, #FEF3C7);
      border: 1px solid #FDE047;
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 36px;
    }

    .rating-left {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .rating-score {
      font-size: 2.8rem;
      font-weight: 900;
      color: #B45309;
      line-height: 1;
    }

    .rating-meta {
      font-size: 0.9rem;
      color: #78350F;
    }

    .rating-stars {
      color: #F59E0B;
      font-size: 1.25rem;
      letter-spacing: 2px;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }

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

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

    .comparison-table th {
      background: #F8FAFC;
      color: var(--text-main);
      font-weight: 700;
    }

    .comparison-table tr:last-child td {
      border-bottom: none;
    }

    .comparison-table .highlight-col {
      background: #FFFDF5;
      font-weight: 700;
      color: #B45309;
      border-left: 2px solid #FDE047;
      border-right: 2px solid #FDE047;
    }

    /* 流程与步骤 */
    .process-timeline {
      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: 24px 20px;
      position: relative;
      text-align: center;
    }

    .step-number {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, #FDE047, #F59E0B);
      color: #451A03;
      font-weight: 900;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      box-shadow: 0 2px 6px rgba(245, 158, 11, 0.3);
    }

    .step-card h4 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .step-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* Token 比价卡片 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .token-card {
      background: #FFFFFF;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      text-align: center;
      transition: var(--transition);
      position: relative;
    }

    .token-card.popular {
      border-color: var(--primary);
      background: #FFFDF9;
      box-shadow: var(--shadow-yellow);
    }

    .popular-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: #F59E0B;
      color: #FFFFFF;
      font-size: 0.75rem;
      font-weight: 800;
      padding: 3px 14px;
      border-radius: var(--radius-full);
    }

    .token-price {
      font-size: 2.4rem;
      font-weight: 900;
      color: var(--text-main);
      margin: 16px 0;
    }

    .token-price span {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: normal;
    }

    .token-list {
      list-style: none;
      text-align: left;
      margin: 20px 0 28px;
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    .token-list li {
      padding: 6px 0;
      border-bottom: 1px dashed #E2E8F0;
    }

    /* 表单区域 */
    .form-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .form-info h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .form-info p {
      color: var(--text-muted);
      margin-bottom: 24px;
      font-size: 0.95rem;
    }

    .info-list-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 16px;
    }

    .info-icon {
      background: var(--primary-light);
      color: #B45309;
      width: 32px;
      height: 32px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
    }

    .main-form {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

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

    .form-group label {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-main);
      background: #F8FAFC;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--border-focus);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
    }

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

    .btn-submit {
      background: linear-gradient(135deg, #FDE047, #F59E0B);
      color: #451A03;
      font-weight: 800;
      font-size: 1.05rem;
      padding: 14px;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: var(--shadow-yellow);
      transition: var(--transition);
    }

    .btn-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 20px -2px rgba(245, 158, 11, 0.4);
    }

    /* 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: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .user-avatar {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: var(--primary-light);
      color: #92400E;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      border: 1px solid #FDE047;
    }

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

    .user-info p {
      font-size: 0.78rem;
      color: var(--text-light);
    }

    .review-body {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
    }

    .review-stars {
      color: #F59E0B;
      font-size: 0.85rem;
    }

    /* FAQ 折叠面板 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

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

    .faq-item.active {
      border-color: var(--primary);
    }

    .faq-question {
      padding: 18px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-weight: 700;
      font-size: 1rem;
      color: var(--text-main);
      cursor: pointer;
      background: #FFFFFF;
      user-select: none;
    }

    .faq-question:hover {
      background: #FFFDF7;
    }

    .faq-icon {
      font-size: 1.2rem;
      color: #D97706;
      transition: transform 0.2s;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #FAFAFA;
      border-top: 1px solid transparent;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      border-top-color: var(--border-color);
    }

    .faq-answer-inner {
      padding: 18px 24px;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 文章与资讯列表 */
    .news-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .news-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 14px;
      color: var(--text-main);
    }

    .news-list {
      list-style: none;
    }

    .news-list li {
      padding: 8px 0;
      border-bottom: 1px solid #F1F5F9;
    }

    .news-list li:last-child {
      border-bottom: none;
    }

    .news-link {
      font-size: 0.9rem;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .news-link:hover {
      color: #D97706;
      transform: translateX(4px);
    }

    .news-link::before {
      content: "•";
      color: var(--primary);
      font-size: 1.2rem;
    }

    /* 加盟代理板块 */
    .partner-banner {
      background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
      color: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 50px 40px;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
      box-shadow: var(--shadow-lg);
    }

    .partner-banner h3 {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: #FDE047;
    }

    .partner-banner p {
      color: #CBD5E1;
      font-size: 1rem;
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .partner-benefits {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-bottom: 24px;
    }

    .partner-benefit-item {
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.1);
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      font-size: 0.85rem;
      color: #F1F5F9;
    }

    /* 联系我们与客服模块 */
    .contact-card-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 30px;
    }

    .contact-item-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 18px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .contact-item-box h5 {
      font-size: 1rem;
      font-weight: 700;
      margin: 12px 0 6px;
      color: var(--text-main);
    }

    .contact-item-box p {
      font-size: 0.85rem;
      color: var(--text-muted);
      word-break: break-all;
    }

    .qr-container {
      width: 140px;
      height: 140px;
      margin: 10px auto 0;
      padding: 6px;
      background: #FFFFFF;
      border: 1px solid #E2E8F0;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
    }

    /* 友情链接与主 Footer */
    .footer {
      background: #0F172A;
      color: #94A3B8;
      padding: 60px 0 30px;
      border-top: 1px solid #1E293B;
      font-size: 0.88rem;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      color: #FFFFFF;
      font-size: 1.2rem;
      font-weight: 800;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-brand p {
      color: #64748B;
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .footer-col h5 {
      color: #FFFFFF;
      font-size: 0.95rem;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-links a:hover {
      color: #FDE047;
    }

    .friend-links-box {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friend-links-title {
      color: #CBD5E1;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .friend-links-list a {
      color: #64748B;
      font-size: 0.85rem;
    }

    .friend-links-list a:hover {
      color: #FDE047;
    }

    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 20px;
      text-align: center;
      color: #475569;
      font-size: 0.82rem;
    }

    /* 浮动操作条与返回顶部 */
    .floating-tools {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .floating-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--text-main);
      font-size: 1.1rem;
      transition: var(--transition);
    }

    .floating-btn:hover {
      background: var(--primary);
      color: #FFFFFF;
      border-color: var(--primary);
      transform: scale(1.05);
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .services-grid,
      .token-grid,
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline,
      .contact-card-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .partner-banner {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links,
      .header-actions .btn-nav-primary {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links.mobile-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        border-bottom: 1px solid var(--border-color);
        padding: 16px 20px;
        gap: 8px;
        box-shadow: var(--shadow-lg);
      }
      .hero-title {
        font-size: 2rem;
      }
      .hero-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .services-grid,
      .token-grid,
      .reviews-grid,
      .media-showcase-grid,
      .news-grid,
      .form-layout,
      .process-timeline,
      .contact-card-grid {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
    }