*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    font-family: "Noto Sans JP",sans-serif;
    background: #bfbfbf;
    color: #fff;
}
.site-header{
    width: 100%;
    background: #000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 40px;
    border: none;
    border-bottom: 1px solid #222;
    position: relative;
    z-index: 10;
}
.logo img{
    width: 100px;
    display: block;
}

.main-nav ul{
    list-style: none;
    display: flex;
    gap: 24px;
}
.main-nav a{
    color: #fff;
    text-decoration: none;
    font-size: 18px;
    letter-spacing: 0.05em;
}
.main-nav a:hover{
    color: #d4af37;
}
/*フッター*/
.site-footer{
    width: 100%;
    background: #000;
    color: #fff;
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 40px;
    margin: 0 auto;
    padding: 40px 24px;
}

.footer-logo img{
    width: 180px;
    margin-bottom: 16px;
    filter: drop-shadow(0 0 6px rgba(212,175,55,0.6))
}
.footer-logo .copyright{
    font-size: 14px;
    opacity: 0.8;
}

.footer-col h3{
    font-size: 16px;
    margin-bottom: 14px;
    font-weight: bold;
}
.footer-col ul{
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-col li{
    margin-bottom: 10px;
}
.footer-col a{
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    opacity: 0.85;
}

.footer-col a:hover{
    color: #d4af37;
    opacity: 1;
}

.hamburger{
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 6px;
}
.hamburger span{
    width: 26px;
    height: 3px;
    background: #fff;
    transition: 0.3s;
}

/* =====================================
   📱 スマホ対応（768px以下）
===================================== */
@media (max-width: 768px) {

  /* =============================
     ヘッダー
  ============================= */
  .site-header {
    flex-wrap: wrap;
    position: relative;
  }
  .hamburger{
    display: flex;
  } 
  .logo img {
    width: 80px;
  }
  .main-nav{
    width: 100%;
    display: none;
    background: #000;
    margin-top: 10px;
  }
  .main-nav ul {
    flex-direction: column;
    gap: 0;
  }

  .main-nav a {
    display: block;
    padding: 14px 0;
  }

  .main-nav.active{
    display: block;
  }

  /* =============================
     フッター
  ============================= */
  .site-footer {
    grid-template-columns: 1fr;
    gap: 30px;
    text-align: center;
  }

  .footer-logo img {
    margin: 0 auto 12px;
  }

  .footer-col h3 {
    margin-top: 10px;
  }

}