/* 四季 Hero 背景 */
body.season-spring .hero {
  background: linear-gradient(160deg, #E8F5E9 0%, #F1F8E9 40%, #FAF6EE 100%);
}
body.season-summer .hero {
  background: linear-gradient(160deg, #E1F5FE 0%, #E8EAF6 50%, #FAF6EE 100%);
}
body.season-autumn .hero {
  background: linear-gradient(160deg, #FFF3E0 0%, #FBE9E7 50%, #FAF6EE 100%);
}
body.season-winter .hero {
  background: linear-gradient(160deg, #EEF2F7 0%, #E8EDF5 50%, #FAF6EE 100%);
}

/* 四季导航栏微调色 */
body.season-spring  { --green: #7EAD6A; }
body.season-summer  { --blue: #7BB8CC; }
body.season-autumn  { --orange: #D4956A; }
body.season-winter  { --blue: #8AAEC4; }