:root{--hud-bg:#08121c94;--hud-border:#aadceb38;--hud-text:#e9f6fb;--hud-dim:#9fb9c6;--accent:#f2b86b;--accent-2:#7fd6e8;--danger:#ff7b7b}*{box-sizing:border-box}html,body{width:100%;height:100%;color:var(--hud-text);background:#071726;margin:0;font-family:Segoe UI,Microsoft YaHei,system-ui,sans-serif;overflow:hidden}#scene{touch-action:none;cursor:grab;width:100%;height:100%;display:block}#scene:active{cursor:grabbing}.hidden{display:none!important}.loading{z-index:20;background:linear-gradient(#06101b 0%,#0a2233 58%,#103a4b 100%);place-items:center;transition:opacity .8s;display:grid;position:fixed;inset:0}.loading.fade-out{opacity:0;pointer-events:none}.loading-inner{text-align:center;width:min(420px,82vw)}.loading-mark{filter:drop-shadow(0 10px 28px #7fd6e847);width:84px;height:84px;margin:0 auto 22px}.loading-mark svg{width:100%;height:100%}.progress-track{background:#ffffff1f;border-radius:8px;width:100%;height:4px;overflow:hidden}.progress-bar{background:linear-gradient(90deg, var(--accent-2), var(--accent));border-radius:8px;width:0%;height:100%;transition:width .25s}.progress-text{letter-spacing:.04em;color:var(--hud-dim);margin-top:12px;font-size:13px}.hud{z-index:10;pointer-events:none;position:fixed;inset:0}.hud-top{justify-content:space-between;align-items:flex-start;gap:10px;display:flex;position:absolute;top:16px;left:16px;right:16px}.hud-cluster{border:1px solid var(--hud-border);background:var(--hud-bg);-webkit-backdrop-filter:blur(14px);pointer-events:auto;border-radius:8px;gap:6px;padding:6px;display:flex;box-shadow:0 12px 34px #0000003d}.icon-btn{width:40px;height:40px;color:var(--hud-dim);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:7px;place-items:center;transition:color .2s,background .2s,border-color .2s,transform .12s;display:grid}.icon-btn svg{stroke-width:2px;width:20px;height:20px}.icon-btn:hover{color:var(--hud-text);background:#7fd6e824;border-color:#7fd6e859}.icon-btn:active{transform:translateY(1px)}.icon-btn.active{color:#08121a;background:linear-gradient(135deg, var(--accent-2), var(--accent));border-color:#ffffff80}.hud-bottom{pointer-events:auto;justify-content:space-between;align-items:center;gap:12px;display:flex;position:absolute;bottom:16px;left:16px;right:16px}.time-cluster{border:1px solid var(--hud-border);background:var(--hud-bg);-webkit-backdrop-filter:blur(14px);border-radius:8px;align-items:center;gap:10px;min-height:44px;padding:6px 12px;display:flex;box-shadow:0 12px 34px #0000003d}.time-label{min-width:42px;color:var(--hud-text);white-space:nowrap;font-size:13px}.speed-label{min-width:48px;color:var(--hud-dim);white-space:nowrap;font-size:12px}.time-slider{width:min(260px,30vw);accent-color:var(--accent-2)}.fps{border:1px solid var(--hud-border);background:var(--hud-bg);-webkit-backdrop-filter:blur(14px);min-width:74px;color:var(--hud-dim);text-align:right;border-radius:8px;padding:8px 12px;font-size:12px}@media (width<=640px){.hud-top{top:10px;left:10px;right:10px}.hud-cluster{gap:4px;padding:5px}.icon-btn{width:38px;height:38px}.hud-bottom{bottom:10px;left:10px;right:10px}.time-cluster{gap:8px;padding:6px 9px}.time-slider{width:44vw}.fps{min-width:62px;padding:8px 9px}}