/* ヘッダー */

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

  .header {
    display: flex;
    position: sticky;
    top: 0; 
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background-color: white;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    z-index: 1000; 
  }

  .site-title {
    font-size: 18px;
    color: #666;
  }

  .site-title a {
    text-decoration: none; /* 下線を消す */
    color: inherit; /* 親要素の色を継承 */
  }



.header-nav {
    display: flex;
    align-items: center;
}

.nav-links {
    list-style: none;
    display: flex;
}

.nav-links li {
    margin: 0 10px;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-size: 16px;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 30px;
    height: 3px;
    background: #333;
    margin: 5px 0;
    transition: 0.3s;
}

/* スマホ用スタイル */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        right: 20px;
        background: white;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        padding: 10px;
        border-radius: 5px;
    }

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

    .hamburger {
        display: flex;
    }
}


 /* ↓ロゴ追加後 */
  /* .logo img {
    height: 50px;
} */