:root {
      --primary: #5c3cf6;
      --primary-light: #8068f8;
      --primary-dark: #3f25c7;
      --secondary: #00d2ff;
      --accent: #ff4d94;
      --emerald: #10b981;
      --amber: #f59e0b;
      --bg-page: #f9faff;
      --bg-surface: #ffffff;
      --bg-alt: #f1f4fd;
      --text-main: #1e2432;
      --text-sub: #4b556b;
      --text-muted: #6e7a91;
      --border-color: #e5eaf7;
      --border-hover: #c9d5fa;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 4px 14px rgba(92, 60, 246, 0.06);
      --shadow-md: 0 10px 30px rgba(92, 60, 246, 0.09);
      --shadow-lg: 0 18px 45px rgba(92, 60, 246, 0.12);
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }

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

    body {
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--bg-page);
      background-image: 
        radial-gradient(at 0% 0%, rgba(92, 60, 246, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(0, 210, 255, 0.06) 0px, transparent 50%),
        radial-gradient(at 50% 100%, rgba(255, 77, 148, 0.04) 0px, transparent 50%);
      background-attachment: fixed;
      line-height: 1.6;
      font-size: 16px;
      overflow-x: hidden;
      scroll-behavior: smooth;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

    .ai-container {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
      width: 100%;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-box img.ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
      object-fit: contain;
    }
    .brand-title {
      font-size: 1.35rem;
      font-weight: 800;
      background: linear-gradient(120deg, var(--primary), var(--secondary));
      -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; /* 严格满足CSS限制 */
    }
    .nav-links li a {
      display: inline-block;
      padding: 8px 13px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-sub);
      border-radius: var(--radius-sm);
      margin: 0 2px;
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background: rgba(92, 60, 246, 0.08);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 999px;
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      text-align: center;
      white-space: nowrap;
    }
    .btn-gradient {
      background: linear-gradient(135deg, var(--primary) 0%, #754ef9 50%, var(--secondary) 100%);
      color: #ffffff !important;
      box-shadow: 0 6px 18px rgba(92, 60, 246, 0.3);
    }
    .btn-gradient:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 24px rgba(92, 60, 246, 0.4);
    }
    .btn-outline {
      background: #ffffff;
      color: var(--primary);
      border-color: var(--primary-light);
    }
    .btn-outline:hover {
      background: rgba(92, 60, 246, 0.06);
      transform: translateY(-1px);
    }
    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 斑斓色彩标签与徽章 */
    .badge-rainbow {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      background: linear-gradient(90deg, rgba(92, 60, 246, 0.1), rgba(0, 210, 255, 0.15), rgba(255, 77, 148, 0.1));
      border: 1px solid rgba(92, 60, 246, 0.2);
      border-radius: 999px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary-dark);
      margin-bottom: 20px;
    }
    .badge-rainbow span.dot {
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent);
    }

    /* 首屏 Hero - 绝不使用图片 */
    .hero-section {
      padding: 85px 0 65px;
      position: relative;
      text-align: center;
      overflow: hidden;
    }
    .hero-content {
      max-width: 960px;
      margin: 0 auto;
    }
    .hero-title {
      font-size: 2.85rem;
      line-height: 1.25;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 22px;
      letter-spacing: -0.8px;
    }
    .hero-title .rainbow-text {
      background: linear-gradient(135deg, #4f22f7, #00aff0 50%, #ff3b81 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.2rem;
      color: var(--text-sub);
      max-width: 800px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }
    .hero-buttons {
      display: flex;
      justify-content: center;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 50px;
    }
    .hero-portal-btn {
      font-size: 1.12rem;
      padding: 14px 38px;
      font-weight: 700;
      border-radius: 999px;
      animation: pulse-ring 2.8s infinite;
    }
    @keyframes pulse-ring {
      0% { box-shadow: 0 0 0 0 rgba(92, 60, 246, 0.45); }
      70% { box-shadow: 0 0 0 16px rgba(92, 60, 246, 0); }
      100% { box-shadow: 0 0 0 0 rgba(92, 60, 246, 0); }
    }

    /* 纯CSS数据面板卡片 (首屏替代图) */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 15px;
    }
    .stat-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 18px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }
    .stat-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
    }
    .stat-card:nth-child(2)::before {
      background: linear-gradient(90deg, var(--secondary), var(--emerald));
    }
    .stat-card:nth-child(3)::before {
      background: linear-gradient(90deg, var(--emerald), var(--amber));
    }
    .stat-card:nth-child(4)::before {
      background: linear-gradient(90deg, var(--accent), var(--primary));
    }
    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-hover);
    }
    .stat-number {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      display: block;
      margin-bottom: 4px;
    }
    .stat-label {
      font-size: 0.92rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 通用区块排版 */
    .section-block {
      padding: 85px 0;
      border-bottom: 1px solid rgba(229, 234, 247, 0.7);
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px;
    }
    .section-badge {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 14px;
      border-radius: 999px;
      margin-bottom: 12px;
      background: rgba(92, 60, 246, 0.08);
      color: var(--primary);
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-sub);
    }

    /* 矩阵模型徽标区 */
    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 25px;
    }
    .model-pill {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 7px 16px;
      border-radius: 999px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-sub);
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
      transition: all 0.25s ease;
    }
    .model-pill:hover {
      border-color: var(--primary-light);
      color: var(--primary);
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(92, 60, 246, 0.1);
    }

    /* 服务能力卡片 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: var(--border-hover);
    }
    .service-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      font-size: 1.5rem;
      background: linear-gradient(135deg, rgba(92, 60, 246, 0.12), rgba(0, 210, 255, 0.15));
      color: var(--primary);
    }
    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .service-card p {
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.65;
      flex-grow: 1;
    }
    .service-tags {
      margin-top: 18px;
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .service-tags span {
      background: var(--bg-alt);
      font-size: 0.78rem;
      padding: 3px 9px;
      border-radius: 4px;
      color: var(--text-muted);
    }

    /* 素材图片图文版块 */
    .media-showcase-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 30px;
      align-items: center;
      margin-bottom: 45px;
    }
    .media-showcase-grid.reverse {
      grid-template-columns: 0.8fr 1.2fr;
    }
    .media-img-container {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      background: #ffffff;
      border: 1px solid var(--border-color);
    }
    .media-img-container img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
    }
    .media-img-container:hover img {
      transform: scale(1.02);
    }
    .media-content-box h3 {
      font-size: 1.75rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .media-content-box p {
      font-size: 1rem;
      color: var(--text-sub);
      margin-bottom: 20px;
      line-height: 1.7;
    }
    .feature-point-list {
      list-style: none;
      margin-bottom: 24px;
    }
    .feature-point-list li {
      position: relative;
      padding-left: 26px;
      margin-bottom: 10px;
      font-size: 0.95rem;
      color: var(--text-sub);
      font-weight: 500;
    }
    .feature-point-list li::before {
      content: "✓";
      position: absolute;
      left: 0;
      top: 0;
      color: var(--emerald);
      font-weight: 900;
    }

    /* 宣传图画廊 */
    .banner-gallery {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 30px;
    }
    .banner-item {
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
      background: #fff;
    }
    .banner-item img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }

    /* 标准制作流程 */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .step-num {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #fff;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      box-shadow: 0 4px 10px rgba(92, 60, 246, 0.3);
    }
    .step-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-card p {
      font-size: 0.9rem;
      color: var(--text-sub);
    }

    /* 对比评测表格与卡片 */
    .eval-highlight-box {
      background: linear-gradient(135deg, #ffffff 0%, #f6f3ff 100%);
      border: 2px solid rgba(92, 60, 246, 0.3);
      border-radius: var(--radius-lg);
      padding: 35px;
      box-shadow: var(--shadow-md);
      margin-bottom: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }
    .eval-score-area {
      display: flex;
      align-items: center;
      gap: 24px;
    }
    .eval-badge-score {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      border-radius: 18px;
      padding: 18px 24px;
      text-align: center;
      box-shadow: 0 8px 20px rgba(92, 60, 246, 0.25);
    }
    .eval-badge-score .score-val {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1;
      display: block;
    }
    .eval-badge-score .score-max {
      font-size: 0.9rem;
      opacity: 0.9;
    }
    .eval-title-wrap h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 6px;
    }
    .star-rating {
      color: #fbbf24;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }
    .eval-table-container {
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }
    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }
    .eval-table th,
    .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .eval-table th {
      background: #f8faff;
      color: var(--text-main);
      font-weight: 700;
    }
    .eval-table tr:hover {
      background: rgba(92, 60, 246, 0.02);
    }
    .eval-table .col-self {
      background: rgba(92, 60, 246, 0.04);
      font-weight: 700;
      color: var(--primary-dark);
    }

    /* Token 比价卡片区 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .token-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
    }
    .token-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-md);
    }
    .token-card.featured::after {
      content: "人气之选";
      position: absolute;
      top: 14px;
      right: 18px;
      background: var(--accent);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 999px;
    }
    .token-card h4 {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 10px;
    }
    .token-price {
      font-size: 2.1rem;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .token-price span {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }
    .token-features {
      list-style: none;
      margin-bottom: 24px;
    }
    .token-features li {
      padding: 7px 0;
      font-size: 0.9rem;
      color: var(--text-sub);
      border-bottom: 1px dashed var(--border-color);
    }

    /* 用户评论卡片 (6条) */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.3s ease;
    }
    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-hover);
    }
    .review-stars {
      color: #f59e0b;
      margin-bottom: 14px;
      font-size: 1rem;
    }
    .review-text {
      font-size: 0.94rem;
      color: var(--text-sub);
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: italic;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .author-avatar-text {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #fff;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
    }
    .author-info h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-info p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* FAQ 常见问题手风琴 (不少于10条) */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      transition: all 0.25s ease;
    }
    .faq-question {
      padding: 18px 22px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-weight: 700;
      font-size: 1.02rem;
      color: var(--text-main);
      background: #fff;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-toggle-icon {
      font-size: 1.25rem;
      transition: transform 0.3s ease;
      color: var(--primary);
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      display: none;
      padding: 0 22px 18px;
      font-size: 0.94rem;
      color: var(--text-sub);
      line-height: 1.7;
      border-top: 1px dashed rgba(229, 234, 247, 0.8);
      padding-top: 14px;
    }
    .faq-item.active .faq-answer {
      display: block;
    }

    /* 需求匹配与表单区 */
    .form-section-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 45px;
      box-shadow: var(--shadow-md);
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
    }
    .form-info-col h3 {
      font-size: 1.85rem;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .form-info-col p {
      color: var(--text-sub);
      font-size: 0.98rem;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .contact-fast-list {
      list-style: none;
    }
    .contact-fast-list li {
      margin-bottom: 12px;
      font-size: 0.92rem;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .contact-fast-list strong {
      color: var(--primary);
    }
    .custom-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .custom-form .form-group.full-width {
      grid-column: span 2;
    }
    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      background: var(--bg-alt);
      color: var(--text-main);
      outline: none;
      transition: border-color 0.25s ease;
    }
    .form-control:focus {
      border-color: var(--primary);
      background: #fff;
    }
    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    /* 文章列表短代码及链接展示 */
    .articles-block {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }
    .article-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 15px;
    }
    .article-link-item {
      padding: 8px 16px;
      background: var(--bg-alt);
      border-radius: var(--radius-sm);
      font-size: 0.88rem;
      color: var(--primary-dark);
      font-weight: 600;
      border: 1px solid transparent;
    }
    .article-link-item:hover {
      background: #ffffff;
      border-color: var(--primary-light);
      transform: translateY(-2px);
    }

    /* 客服与微信二维码弹层/小模块 */
    .service-qr-card {
      display: flex;
      align-items: center;
      gap: 20px;
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-top: 25px;
    }
    .service-qr-card img {
      width: 110px;
      height: 110px;
      border-radius: 8px;
      object-fit: contain;
      border: 1px solid var(--border-color);
    }

    /* 友情链接 */
    .friendly-links-bar {
      margin-top: 40px;
      padding-top: 25px;
      border-top: 1px solid var(--border-color);
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .friendly-links-bar a {
      color: var(--text-sub);
      margin-right: 18px;
      display: inline-block;
      margin-bottom: 8px;
    }
    .friendly-links-bar a:hover {
      color: var(--primary);
    }

    /* 页脚统一规范 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 25px;
      color: var(--text-sub);
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 30px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 18px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 9px;
      font-size: 0.9rem;
    }
    .footer-col ul li a:hover {
      color: var(--primary);
    }
    .footer-bottom-bar {
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
      text-align: center;
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 浮动操作栏与返回顶部 */
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      background: #ffffff;
      border-radius: 50%;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      cursor: pointer;
      border: 1px solid var(--border-color);
      transition: all 0.3s ease;
      font-weight: bold;
    }
    .float-btn:hover {
      background: var(--primary);
      color: #fff;
      transform: scale(1.08);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.2rem;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .services-grid,
      .token-grid,
      .reviews-grid,
      .banner-gallery {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .media-showcase-grid,
      .media-showcase-grid.reverse,
      .form-section-card,
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .nav-links {
        display: none;
      }
      .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .mobile-menu-btn {
        display: block;
      }
    }
    @media (max-width: 640px) {
      .hero-title {
        font-size: 1.85rem;
      }
      .hero-stats-grid,
      .services-grid,
      .token-grid,
      .reviews-grid,
      .steps-grid,
      .banner-gallery {
        grid-template-columns: 1fr;
      }
      .custom-form {
        grid-template-columns: 1fr;
      }
      .custom-form .form-group.full-width {
        grid-column: span 1;
      }
      .eval-highlight-box {
        flex-direction: column;
        align-items: flex-start;
      }
      .eval-score-area {
        width: 100%;
        justify-content: flex-start;
      }
    }