/* 打勾动画体系 — 参数与 cherryportal(login.js/change-password.js) 一致
   ci=圆环描边  bp=背景脉冲  ck=对勾描边  fu=文字上浮入场 */
@keyframes ci { to { stroke-dashoffset: 0; } }
@keyframes bp { to { opacity: .08; } }
@keyframes ck { to { stroke-dashoffset: 0; } }
@keyframes fu { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* 层叠入场：主标题 .65s 起，随后内容块依次 +.15s */
.fu    { opacity: 0; animation: fu .5s ease .65s forwards; }
.fu-d1 { opacity: 0; animation: fu .5s ease .8s forwards; }
.fu-d2 { opacity: 0; animation: fu .5s ease .95s forwards; }