.product-menu {
    position: sticky;
    top: 80px;               /* ヘッダー高さに合わせる */
    padding: 12px 0;
    display: flex;
    flex-wrap: wrap;         /* 項目が増えても折り返す */
    justify-content: center;
    gap: 15px;
  }

  .product-menu li {
    list-style: none;
  }
  
  .product-menu a {
    display: inline-block;
    /* background: linear-gradient(135deg, #0078d7, #00b894);  */
    color: #0033cc;
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: bold;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
  }
  
  .product-menu a:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
  }

  .anchor-adjust {
    scroll-margin-top: 100px; /* 固定ヘッダーの高さ＋余白 */
  }

  .anchor-adjust {
    display: block;
    position: relative;
    top: -160px; /* ヘッダーの高さ分マイナスする */
    height: 0;
    visibility: hidden;
  }

  h3 {
    font-size: 2.5rem;
    color: #00a86b;
    text-align: center;
  }
  
  

  /* ▼ スマホ対応 */
  @media screen and (max-width: 768px) {
    .product-menu {
      gap: 10px;
      padding: 10px 0;
    }
  
    .product-menu a {
      padding: 8px 14px;
      font-size: 1.3rem;
    }

    h3 {
      font-size: 2.2rem;
      color: #00a86b;
      text-align: center;
    }
    p {

      font-size: 1.3rem;
      }
  }