*{box-sizing:border-box}html,body{color:#eee;background:#111;height:100%;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;overflow:hidden}.topbar{top:env(safe-area-inset-top,0);z-index:10;background:linear-gradient(#0009,#0000);align-items:center;gap:8px;padding:10px 12px;display:flex;position:fixed;left:0;right:0}#model-select{color:#fff;background:#ffffff1f;border:none;border-radius:10px;flex:1;min-width:0;padding:8px 10px;font-size:15px}.topbar .mode-btn{width:auto;min-width:52px;padding:0 12px;font-size:13px;font-weight:600}.topbar .mode-btn:disabled{opacity:.4}.topbar button{color:#fff;background:#ffffff1f;border:none;border-radius:21px;flex:none;width:42px;height:42px;font-size:18px}model-viewer::part(default-ar-button){bottom:calc(env(safe-area-inset-bottom,0px) + 116px);right:12px}model-viewer{--poster-color:#111;background:#111;width:100%;height:100%}.overlay-msg[hidden]{display:none}.overlay-msg{text-align:center;color:#999;justify-content:center;align-items:center;padding:24px;font-size:14px;line-height:1.5;display:flex;position:absolute;inset:0}.part-bar{bottom:calc(env(safe-area-inset-bottom,0px) + 68px);z-index:10;scrollbar-width:none;justify-content:flex-start;gap:5px;padding:0 12px 6px;display:flex;position:fixed;left:0;right:0;overflow-x:auto;-webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 24px),#0000);mask-image:linear-gradient(90deg,#000 calc(100% - 24px),#0000)}.part-bar[hidden]{display:none}.part-bar::-webkit-scrollbar{display:none}.part-bar button{color:#777;white-space:nowrap;background:#ffffff14;border:none;border-radius:14px;flex:none;padding:6px 10px;font-size:12px}.part-bar button.on{color:#fff;background:#ffffff38}.layer-bar{bottom:env(safe-area-inset-bottom,0);z-index:10;background:linear-gradient(#0000,#0009);justify-content:center;gap:8px;padding:14px 12px 18px;display:flex;position:fixed;left:0;right:0}.layer-bar button{color:#ddd;background:#ffffff1f;border:none;border-radius:20px;padding:10px 18px;font-size:14px}.layer-bar button.active{color:#111;background:#fff;font-weight:600}.layer-bar button.missing{opacity:.35;text-decoration:line-through}dialog#credits-dialog{color:#eee;background:#1c1c1c;border:none;border-radius:16px;width:min(520px,92vw);max-height:80vh;padding:0}.credits-body{max-height:calc(80vh - 56px);padding:14px 16px 18px;overflow-y:auto}.credits-intro{color:#999;margin:0 0 14px;font-size:12px;line-height:1.5}.credits-list{flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;display:flex}.credits-list li{flex-direction:column;gap:3px;display:flex}.credits-list a{color:#eee;border-bottom:1px solid #ffffff40;align-self:flex-start;font-size:14px;text-decoration:none}.credits-meta{color:#8f8f8f;font-size:12px}dialog#gallery-dialog{color:#eee;background:#1c1c1c;border:none;border-radius:16px;width:min(600px,92vw);max-height:80vh;padding:0}dialog::backdrop{background:#0009}.gallery-header{border-bottom:1px solid #ffffff1a;justify-content:space-between;align-items:center;padding:14px 16px;display:flex}.gallery-header h2{margin:0;font-size:16px}.gallery-header button{color:#ccc;background:0 0;border:none;font-size:18px}.gallery-grid{grid-template-columns:repeat(2,1fr);gap:10px;max-height:calc(80vh - 56px);padding:14px;display:grid;overflow-y:auto}.gallery-item{background:#000;border-radius:10px;margin:0;position:relative;overflow:hidden}.gallery-item img{aspect-ratio:1;object-fit:cover;width:100%;display:block}.gallery-item figcaption{color:#aaa;padding:6px 8px;font-size:11px}.gallery-item .delete-btn{color:#fff;background:#0009;border:none;border-radius:13px;width:26px;height:26px;position:absolute;top:6px;right:6px}.empty{color:#888;text-align:center;padding:20px}