.site-footer{
  color:#e6ecf3;
  background:
    radial-gradient(800px 300px at 20% -10%, rgba(168,85,247,.18), transparent),
    linear-gradient(180deg,#1a2434,#0b1524);
  padding:40px 24px 24px;
  margin-top:56px;
  border-top:1px solid rgba(255,255,255,.06);
  font-weight:600;
}
.site-footer a{ color:#d7e4ff; text-decoration:none; }
.site-footer a:hover{ text-decoration:underline; }

.footer-container{ max-width:1200px; margin:0 auto; }
.footer-top{
  display:grid; gap:28px; margin-bottom:20px;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
}
@media (max-width:1024px){ .footer-top{ grid-template-columns:1fr 1fr; } }
@media (max-width:640px){ .footer-top{ grid-template-columns:1fr; } }

.footer-logo{ font-size: clamp(20px,1.2vw+16px,26px); font-weight:800; color:#93c5fd; }
.social-links{ display:flex; gap:12px; margin-top:14px; }
.social-link{
  width:36px; height:36px; border-radius:9999px;
  display:grid; place-items:center; background:rgba(255,255,255,.08); color:#e5e7eb;
}
.social-link:hover{ background:rgba(255,255,255,.16); }

/* 無効化されたソーシャルリンク */
.social-link-disabled{
  background:rgba(255,255,255,.04) !important; 
  color:#6b7280 !important; 
  cursor:not-allowed !important;
  opacity:0.5;
}
.social-link-disabled:hover{ 
  background:rgba(255,255,255,.04) !important; 
  color:#6b7280 !important;
}

.footer-column h3{ color:#f0abfc; font-weight:700; margin:0 0 10px; }
.footer-column ul{ list-style:none; padding:0; margin:0; }
.footer-column li{ margin:10px 0; }
.contact-info p{ margin:8px 0; }

.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  margin-top:20px; padding-top:14px; text-align:center; color:#cbd5e1; font-size:14px;
}