/* ============================================
   css/observer.css
   Mucha Exhibition v7.1.17 OSS (v6 起源 + v7.1.x 暗色/优化增量)
   ============================================ */

/* ===================== 滚动渐显 ===================== */
.fade-in{opacity:0;transform:translateY(40px);transition:opacity 1s,transform 1s}
.fade-in.visible{opacity:1;transform:translateY(0)}