/* 中梦集团 — 北大风格滚动切换效果 */
body.zm-scroll-locked{overflow:hidden;height:100%}
.zm-hero-fixed{position:fixed!important;inset:0!important;z-index:2;height:auto!important;min-height:100vh;overflow:hidden;transition:transform .7s cubic-bezier(.5,0,.2,1),opacity .7s cubic-bezier(.5,0,.2,1)}
body.zm-at-content .zm-hero-fixed{transform:translateY(-30%);opacity:0;pointer-events:none}
.zm-slide-wrapper{position:fixed;left:0;right:0;top:100%;bottom:0;z-index:3;overflow-y:auto;overflow-x:hidden;background:#fff;transition:top .7s cubic-bezier(.5,0,.2,1)}
body.zm-at-content .zm-slide-wrapper{top:0}
.zm-slide-wrapper{z-index:1}
header,.main-header,.header-sticky{z-index:999!important}
.zm-scroll-hint{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:10;cursor:pointer;text-align:center;animation:zm-hint-bounce 2s infinite;user-select:none}
.zm-hint-arrow{display:block;width:32px;height:32px;margin:0 auto 6px;border-right:2.5px solid rgba(255,255,255,.8);border-bottom:2.5px solid rgba(255,255,255,.8);transform:rotate(45deg)}
.zm-hint-text{font-size:12px;color:rgba(255,255,255,.7);letter-spacing:2px}
@keyframes zm-hint-bounce{0%,20%,50%,80%,100%{transform:translateX(-50%) translateY(0)}40%{transform:translateX(-50%) translateY(-10px)}60%{transform:translateX(-50%) translateY(-5px)}}
@media(max-width:768px){body.zm-scroll-locked{overflow:auto;height:auto}.zm-hero-fixed{position:relative!important;inset:auto!important;min-height:auto!important}body.zm-at-content .zm-hero-fixed{transform:none;opacity:1;pointer-events:auto}.zm-slide-wrapper{position:relative!important;top:auto!important;bottom:auto!important;overflow:visible!important}body.zm-at-content .zm-slide-wrapper{top:auto!important}.zm-scroll-hint{display:none}}