/* --- 全局重置与基础变量 --- */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    :root {
      --primary: #FF6A00;
      --primary-light: #FFF0E6;
      --primary-deep: #E55A00;
      --secondary: #1A1A2E;
      --text-main: #1E1E2A;
      --text-secondary: #4A4A5A;
      --text-light: #7A7A8A;
      --bg-page: #FAFAFC;
      --bg-card: #FFFFFF;
      --border-color: #EDEDF2;
      --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.07);
      --shadow-lg: 0 20px 50px rgba(255, 106, 0, 0.15);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --transition: 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
      --font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-family);
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

    ul {
      list-style: none;
    }

    /* --- 容器 --- */
    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* --- 按钮基础 --- */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.95rem;
      transition: all var(--transition);
      cursor: pointer;
      border: none;
      line-height: 1.4;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), #FF8A3D);
      color: #fff;
      box-shadow: 0 6px 20px rgba(255, 106, 0, 0.3);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 30px rgba(255, 106, 0, 0.45);
    }

    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 2px solid var(--primary);
    }

    .btn-outline:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }

    .btn-ghost {
      background: rgba(255, 255, 255, 0.15);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.3);
      backdrop-filter: blur(4px);
    }

    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.25);
      transform: translateY(-2px);
    }

    /* --- 顶部导航 --- */
    .header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-color);
      transition: box-shadow var(--transition);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      padding-top: 12px;
      padding-bottom: 12px;
      flex-wrap: wrap;
    }

    .logo-wrap {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

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

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      flex-wrap: wrap;
    }

    .nav-links a {
      padding: 8px 14px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-secondary);
      border-radius: 8px;
      transition: color var(--transition), background var(--transition);
      white-space: nowrap;
    }

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

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .nav-actions .btn {
      padding: 10px 22px;
      font-size: 0.9rem;
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.8rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 4px 8px;
      line-height: 1;
    }

    /* --- Hero 首屏（无图片）--- */
    .hero {
      position: relative;
      background: linear-gradient(145deg, #FFF9F5 0%, #FFF0E6 40%, #FFE8D9 100%);
      padding: 80px 0 100px;
      overflow: hidden;
      min-height: 560px;
      display: flex;
      align-items: center;
    }

    .hero::before {
      content: '';
      position: absolute;
      top: -30%;
      right: -10%;
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(255, 106, 0, 0.12) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero::after {
      content: '';
      position: absolute;
      bottom: -20%;
      left: -8%;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(255, 160, 80, 0.1) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero-content {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
      position: relative;
      z-index: 2;
    }

    .hero-text h1 {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--secondary);
      margin-bottom: 20px;
      letter-spacing: -0.02em;
    }

    .hero-text h1 span {
      color: var(--primary);
      display: inline-block;
      position: relative;
    }

    .hero-text h1 span::after {
      content: '';
      position: absolute;
      bottom: 4px;
      left: 0;
      width: 100%;
      height: 8px;
      background: rgba(255, 106, 0, 0.2);
      border-radius: 4px;
      z-index: -1;
    }

    .hero-desc {
      font-size: 1.1rem;
      color: var(--text-secondary);
      max-width: 520px;
      margin-bottom: 32px;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .hero-tags span {
      background: #fff;
      padding: 6px 16px;
      border-radius: 50px;
      font-size: 0.85rem;
      font-weight: 500;
      color: var(--text-secondary);
      box-shadow: var(--shadow-sm);
      border: 1px solid rgba(255, 106, 0, 0.1);
      transition: transform var(--transition);
    }

    .hero-tags span:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(255, 106, 0, 0.12);
      border-color: rgba(255, 106, 0, 0.3);
    }

    .hero-visual {
      display: flex;
      flex-direction: column;
      gap: 20px;
      justify-content: center;
      align-items: center;
    }

    .hero-stat-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      width: 100%;
      max-width: 420px;
    }

    .hero-stat-card {
      background: rgba(255, 255, 255, 0.8);
      backdrop-filter: blur(8px);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      border: 1px solid rgba(255, 255, 255, 0.8);
      box-shadow: var(--shadow-sm);
      transition: transform var(--transition), box-shadow var(--transition);
    }

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

    .hero-stat-card .num {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
    }

    .hero-stat-card .label {
      font-size: 0.85rem;
      color: var(--text-secondary);
      margin-top: 4px;
    }

    /* --- 通用区块 --- */
    .section {
      padding: 80px 0;
    }

    .section-header {
      text-align: center;
      max-width: 700px;
      margin: 0 auto 56px;
    }

    .section-header .eyebrow {
      display: inline-block;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      padding: 4px 16px;
      border-radius: 50px;
      margin-bottom: 16px;
    }

    .section-header h2 {
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .section-header p {
      font-size: 1.05rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* --- 关于我们 & 平台介绍 --- */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: start;
    }

    .about-text h3 {
      font-size: 1.6rem;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 16px;
    }

    .about-text p {
      color: var(--text-secondary);
      margin-bottom: 16px;
      line-height: 1.8;
    }

    .about-features {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 28px;
    }

    .about-feature-item {
      background: #fff;
      padding: 20px 18px;
      border-radius: var(--radius-md);
      border-left: 4px solid var(--primary);
      box-shadow: var(--shadow-sm);
      transition: transform var(--transition), box-shadow var(--transition);
    }

    .about-feature-item:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .about-feature-item h4 {
      font-size: 1rem;
      font-weight: 600;
      color: var(--secondary);
      margin-bottom: 6px;
    }

    .about-feature-item p {
      font-size: 0.9rem;
      color: var(--text-light);
      line-height: 1.5;
      margin-bottom: 0;
    }

    .about-image-wrap {
      background: linear-gradient(145deg, #FFF5EE, #FFE8D9);
      border-radius: var(--radius-lg);
      padding: 32px;
      display: flex;
      flex-direction: column;
      gap: 20px;
      justify-content: center;
      align-items: center;
      min-height: 340px;
    }

    .about-image-wrap img {
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      width: 100%;
      object-fit: cover;
    }

    .about-image-wrap .img-caption {
      font-size: 0.9rem;
      color: var(--text-secondary);
      text-align: center;
    }

    /* --- 数据指标 --- */
    .stats-bar {
      background: var(--secondary);
      border-radius: var(--radius-lg);
      padding: 48px 40px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
      margin-top: 48px;
    }

    .stats-bar .item .num {
      font-size: 2.2rem;
      font-weight: 800;
      color: #fff;
      line-height: 1.2;
    }

    .stats-bar .item .num span {
      color: var(--primary);
      font-size: 1.4rem;
    }

    .stats-bar .item .label {
      font-size: 0.9rem;
      color: rgba(255, 255, 255, 0.7);
      margin-top: 6px;
    }

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

    .service-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 30px 24px;
      border: 1px solid var(--border-color);
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
      position: relative;
      overflow: hidden;
    }

    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), #FFB074);
      opacity: 0;
      transition: opacity var(--transition);
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: transparent;
    }

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

    .service-card .icon-box {
      width: 56px;
      height: 56px;
      border-radius: 14px;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      margin-bottom: 18px;
      font-weight: 700;
      color: var(--primary);
    }

    .service-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 10px;
    }

    .service-card p {
      font-size: 0.92rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* --- 流程步骤 --- */
    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      counter-reset: step;
    }

    .process-step {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      position: relative;
      transition: transform var(--transition), box-shadow var(--transition);
      counter-increment: step;
    }

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

    .process-step::before {
      content: counter(step);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), #FF9A4D);
      color: #fff;
      font-weight: 800;
      font-size: 1.1rem;
      margin-bottom: 14px;
      box-shadow: 0 4px 12px rgba(255, 106, 0, 0.25);
    }

    .process-step h4 {
      font-size: 1rem;
      font-weight: 600;
      color: var(--secondary);
      margin-bottom: 6px;
    }

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

    /* --- 对比评测 --- */
    .compare-wrap {
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
      overflow-x: auto;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 680px;
    }

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      text-align: left;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }

    .compare-table thead th {
      background: var(--primary-light);
      color: var(--secondary);
      font-weight: 700;
      font-size: 0.9rem;
      border-bottom: 2px solid var(--primary);
    }

    .compare-table tbody tr:hover {
      background: #FFF9F5;
    }

    .compare-table .highlight {
      color: var(--primary);
      font-weight: 700;
    }

    .rating-stars {
      color: #FFB800;
      letter-spacing: 2px;
      font-size: 1.1rem;
    }

    .rating-score {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--primary);
    }

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

    .case-card {
      background: #fff;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: transform var(--transition), box-shadow var(--transition);
    }

    .case-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }

    .case-card .img-box {
      width: 100%;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: #F5F5F8;
    }

    .case-card .img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

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

    .case-card .info {
      padding: 20px;
    }

    .case-card h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 6px;
    }

    .case-card p {
      font-size: 0.88rem;
      color: var(--text-light);
      line-height: 1.5;
    }

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

    .review-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-color);
      transition: transform var(--transition), box-shadow var(--transition);
    }

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

    .review-card .quote {
      font-size: 0.95rem;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-bottom: 18px;
      font-style: italic;
    }

    .review-card .reviewer {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .review-card .avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-light), #FFD9BF);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
      font-size: 1.1rem;
      flex-shrink: 0;
    }

    .review-card .reviewer-info .name {
      font-weight: 600;
      color: var(--secondary);
      font-size: 0.95rem;
    }

    .review-card .reviewer-info .role {
      font-size: 0.82rem;
      color: var(--text-light);
    }

    /* --- 标签云 & 模型支持 --- */
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
    }

    .tag-cloud span {
      background: #fff;
      padding: 8px 22px;
      border-radius: 50px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-secondary);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
      cursor: default;
    }

    .tag-cloud span:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(255, 106, 0, 0.1);
    }

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

    .token-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      text-align: center;
      border: 1px solid var(--border-color);
      transition: transform var(--transition), box-shadow var(--transition);
      position: relative;
    }

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

    .token-card .model-name {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 8px;
    }

    .token-card .price {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
    }

    .token-card .price small {
      font-size: 0.9rem;
      font-weight: 400;
      color: var(--text-light);
    }

    .token-card .desc {
      font-size: 0.88rem;
      color: var(--text-secondary);
      margin-top: 8px;
    }

    .token-badge {
      position: absolute;
      top: -10px;
      right: 16px;
      background: var(--primary);
      color: #fff;
      font-size: 0.75rem;
      padding: 2px 12px;
      border-radius: 50px;
      font-weight: 600;
    }

    /* --- FAQ 折叠面板 --- */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #fff;
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      border: 1px solid var(--border-color);
      overflow: hidden;
      transition: all var(--transition);
    }

    .faq-item:hover {
      border-color: rgba(255, 106, 0, 0.3);
    }

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

    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 24px;
      cursor: pointer;
      font-weight: 600;
      color: var(--secondary);
      font-size: 1rem;
      transition: background var(--transition);
      gap: 16px;
    }

    .faq-question:hover {
      background: #FFF9F5;
    }

    .faq-question .icon {
      width: 24px;
      height: 24px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 700;
      font-size: 1.2rem;
      transition: transform var(--transition);
      flex-shrink: 0;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 24px;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 24px 20px;
    }

    .faq-answer p {
      color: var(--text-secondary);
      font-size: 0.92rem;
      line-height: 1.7;
    }

    /* --- 文章 & 资讯 --- */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .article-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-color);
      transition: transform var(--transition), box-shadow var(--transition);
    }

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

    .article-card .category {
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--primary);
      background: var(--primary-light);
      display: inline-block;
      padding: 2px 12px;
      border-radius: 50px;
      margin-bottom: 12px;
    }

    .article-card h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 8px;
      line-height: 1.4;
    }

    .article-card p {
      font-size: 0.88rem;
      color: var(--text-light);
      line-height: 1.6;
      margin-bottom: 14px;
    }

    .article-card .link {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
      transition: gap var(--transition);
    }

    .article-card .link:hover {
      gap: 8px;
    }

    /* --- 联系表单 --- */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 48px;
      align-items: start;
    }

    .contact-info h3 {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 16px;
    }

    .contact-info p {
      color: var(--text-secondary);
      margin-bottom: 24px;
      line-height: 1.7;
    }

    .contact-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .contact-list .item {
      display: flex;
      align-items: center;
      gap: 14px;
      background: #fff;
      padding: 16px 20px;
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-sm);
      font-size: 0.95rem;
      color: var(--text-secondary);
      transition: transform var(--transition);
    }

    .contact-list .item:hover {
      transform: translateX(4px);
    }

    .contact-list .item .icon {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      flex-shrink: 0;
      color: var(--primary);
      font-weight: 700;
    }

    .qr-box {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      margin-top: 16px;
    }

    .qr-box img {
      width: 160px;
      height: 160px;
      object-fit: contain;
      margin: 0 auto 10px;
      border-radius: 8px;
    }

    .qr-box p {
      font-size: 0.85rem;
      color: var(--text-light);
    }

    .form-wrap {
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 36px 32px;
      box-shadow: var(--shadow-md);
    }

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

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--secondary);
      margin-bottom: 6px;
    }

    .form-group label .required {
      color: #FF3B30;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-family: var(--font-family);
      font-size: 0.95rem;
      color: var(--text-main);
      background: var(--bg-page);
      transition: border-color var(--transition), box-shadow var(--transition);
      outline: none;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(255, 106, 0, 0.12);
      background: #fff;
    }

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

    .form-wrap .btn {
      width: 100%;
      padding: 14px;
      font-size: 1rem;
    }

    /* --- 页脚 --- */
    .footer {
      background: #1A1A2E;
      color: rgba(255, 255, 255, 0.8);
      padding: 60px 0 0;
      margin-top: 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-brand h3 {
      color: #fff;
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 0.9rem;
      line-height: 1.7;
      color: rgba(255, 255, 255, 0.6);
      margin-bottom: 16px;
    }

    .footer-brand .social-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .footer-brand .social-links a {
      color: rgba(255, 255, 255, 0.7);
      font-size: 0.85rem;
      transition: color var(--transition);
    }

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

    .footer-col h4 {
      color: #fff;
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 18px;
    }

    .footer-col ul li {
      margin-bottom: 10px;
    }

    .footer-col ul li a {
      color: rgba(255, 255, 255, 0.6);
      font-size: 0.88rem;
      transition: color var(--transition);
    }

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

    .footer-bottom {
      padding: 24px 0;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      font-size: 0.82rem;
      color: rgba(255, 255, 255, 0.5);
    }

    .footer-bottom .links {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
    }

    .footer-bottom .links a {
      color: rgba(255, 255, 255, 0.5);
      transition: color var(--transition);
    }

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

    /* --- 浮动客服 & 返回顶部 --- */
    .float-tools {
      position: fixed;
      right: 20px;
      bottom: 80px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #fff;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      cursor: pointer;
      transition: all var(--transition);
      border: 1px solid var(--border-color);
      color: var(--text-secondary);
      position: relative;
    }

    .float-btn:hover {
      transform: translateY(-3px);
      box-shadow: 0 8px 24px rgba(255, 106, 0, 0.2);
      border-color: var(--primary);
      color: var(--primary);
    }

    .float-btn .tooltip {
      position: absolute;
      right: 60px;
      top: 50%;
      transform: translateY(-50%);
      background: var(--secondary);
      color: #fff;
      font-size: 0.75rem;
      padding: 4px 12px;
      border-radius: 6px;
      white-space: nowrap;
      opacity: 0;
      pointer-events: none;
      transition: opacity var(--transition);
    }

    .float-btn:hover .tooltip {
      opacity: 1;
    }

    .contact-popup {
      display: none;
      position: fixed;
      right: 80px;
      bottom: 140px;
      z-index: 100;
      background: #fff;
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-md);
      width: 200px;
      text-align: center;
      border: 1px solid var(--border-color);
    }

    .contact-popup.show {
      display: block;
      animation: fadeInUp 0.3s ease;
    }

    .contact-popup img {
      width: 160px;
      height: 160px;
      object-fit: contain;
      margin: 0 auto 10px;
      border-radius: 8px;
    }

    .contact-popup p {
      font-size: 0.82rem;
      color: var(--text-light);
    }

    /* --- 动画 --- */
    @keyframes fadeInUp {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .fade-in {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }

    .fade-in.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* --- 响应式 --- */
    @media (max-width: 1024px) {
      .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
      }

      .hero-text h1 {
        font-size: 2.2rem;
      }

      .hero-visual {
        align-items: flex-start;
      }

      .hero-stat-grid {
        max-width: 100%;
      }

      .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .process-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .cases-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .token-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        flex-wrap: wrap;
      }

      .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 12px 0;
        border-top: 1px solid var(--border-color);
        margin-top: 12px;
      }

      .nav-links.open {
        display: flex;
      }

      .nav-links a {
        padding: 12px 16px;
        border-radius: 0;
        border-bottom: 1px solid var(--border-color);
        font-size: 0.95rem;
      }

      .nav-links a:last-child {
        border-bottom: none;
      }

      .mobile-toggle {
        display: block;
      }

      .nav-actions .btn {
        padding: 8px 16px;
        font-size: 0.82rem;
      }

      .hero {
        padding: 50px 0 60px;
        min-height: auto;
      }

      .hero-text h1 {
        font-size: 1.8rem;
      }

      .hero-desc {
        font-size: 1rem;
      }

      .hero-actions {
        gap: 12px;
      }

      .hero-actions .btn {
        padding: 10px 22px;
        font-size: 0.88rem;
      }

      .section {
        padding: 56px 0;
      }

      .section-header h2 {
        font-size: 1.6rem;
      }

      .section-header p {
        font-size: 0.95rem;
      }

      .services-grid {
        grid-template-columns: 1fr;
      }

      .process-grid {
        grid-template-columns: 1fr;
      }

      .cases-grid {
        grid-template-columns: 1fr;
      }

      .reviews-grid {
        grid-template-columns: 1fr;
      }

      .token-grid {
        grid-template-columns: 1fr;
      }

      .articles-grid {
        grid-template-columns: 1fr;
      }

      .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        padding: 32px 20px;
      }

      .hero-stat-card .num {
        font-size: 1.5rem;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .form-wrap {
        padding: 24px 20px;
      }

      .compare-wrap {
        padding: 20px;
      }

      .compare-table th,
      .compare-table td {
        padding: 12px 14px;
        font-size: 0.85rem;
      }

      .float-tools {
        right: 12px;
        bottom: 60px;
      }

      .float-btn {
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
      }

      .contact-popup {
        right: 60px;
        bottom: 120px;
        width: 180px;
      }
    }

    @media (max-width: 480px) {
      .container {
        padding: 0 16px;
      }

      .hero-text h1 {
        font-size: 1.5rem;
      }

      .hero-tags span {
        font-size: 0.78rem;
        padding: 4px 12px;
      }

      .stats-bar {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
      }

      .stats-bar .item .num {
        font-size: 1.6rem;
      }
    }