.neipix-to-top{position:fixed;left:max(20px,env(safe-area-inset-left));bottom:max(24px,env(safe-area-inset-bottom));z-index:40;display:flex;align-items:center;justify-content:center;gap:8px;width:52px;height:52px;padding:0;border:1px solid #ffffff8c;border-radius:18px;color:white;background:linear-gradient(135deg,#7d3ff2,#6451ef 48%,#20aae9);box-shadow:0 8px 24px #634ded38,inset 0 1px 0 #ffffff40;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease;font:600 13px Inter,"Segoe UI",sans-serif}
.neipix-to-top[hidden]{display:none!important}.neipix-to-top svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}.neipix-to-top:hover{transform:translateY(-3px);box-shadow:0 12px 28px #634ded50}.neipix-to-top:focus-visible{outline:3px solid #3d217e;outline-offset:4px}.neipix-to-top span{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
@media(max-width:620px){.neipix-to-top{left:12px;bottom:max(16px,env(safe-area-inset-bottom));width:44px;height:44px;border-radius:15px}}
@media(prefers-reduced-motion:reduce){.neipix-to-top{transition:none}.neipix-to-top:hover{transform:none}}