/* ============================================================
   SwimX — 动画关键帧
   ============================================================ */
@keyframes fadeUp  { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn  { from { opacity: 0; } to { opacity: 1; } }
@keyframes pulse   { 0%,100% { transform: scale(1); } 50% { transform: scale(1.05); } }
@keyframes float   { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes slideDown { from { opacity: 0; transform: translateY(-100%); } to { opacity: 1; transform: translateY(0); } }
@keyframes popIn   { from { opacity: 0; transform: scale(.9) translateY(20px); } to { opacity: 1; transform: scale(1) translateY(0); } }