:root {
    --contact-primary: #334155;
    --contact-accent: #e67e23; /* 沿用您原代码的品牌橙色 */
    --contact-bg: #ffffff;
    --contact-border: #e2e8f0;
    --contact-text-muted: #64748b;
  }
  .ht-contact-wrapper {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 15px;
    box-sizing: border-box;
  }
  .ht-contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
  }
  .ht-contact-card {
    background: var(--contact-bg);
    border: 1px solid var(--contact-border);
    border-top: 4px solid var(--contact-accent);
    padding: 35px 30px;
    border-radius: 6px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.03);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  .ht-contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 25px -5px rgba(0, 0, 0, 0.08);
  }
  .ht-contact-title {
    font-size: 15px;
    color: var(--contact-accent);
    font-weight: 800;
    letter-spacing: 1.5px;
    margin-bottom: 25px;
    text-transform: uppercase;
  }
  .ht-contact-item {
    margin-bottom: 20px;
  }
  .ht-contact-item:last-child {
    margin-bottom: 0;
  }
  .ht-contact-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--contact-primary);
    margin: 0 0 6px 0;
  }
  .ht-contact-value a {
    color: var(--contact-primary);
    text-decoration: none;
    transition: color 0.2s ease;
  }
  .ht-contact-value a:hover {
    color: var(--contact-accent);
  }
  .ht-contact-sub {
    font-size: 14px;
    color: var(--contact-text-muted);
    font-style: italic;
    margin: 0;
  }
  .ht-contact-address {
    font-size: 16px;
    line-height: 1.6;
    color: var(--contact-primary);
    margin: 0;
    font-weight: 500;
  }