*{box-sizing:border-box}:root{font-family:system-ui,"Microsoft YaHei",sans-serif;color:#fff;background:#101714;color-scheme:dark}body{margin:0;height:100dvh;overflow:hidden}button{font:inherit;border:1px solid #ffffff36;border-radius:999px;padding:12px 20px;cursor:pointer;background:#17241bbb;backdrop-filter:blur(8px);color:#fff;font-size:13px}button:focus-visible{outline:3px solid white;outline-offset:4px}[hidden]{display:none!important}#camera{position:fixed;inset:0;overflow:hidden;isolation:isolate}#hud{position:fixed;inset:0;z-index:3;pointer-events:none}#hud button{pointer-events:auto}.topbar{position:absolute;top:max(20px,env(safe-area-inset-top));left:20px;right:20px;display:flex;justify-content:space-between;align-items:center;gap:10px}#tracking{font-size:12px;background:#17241bbb;backdrop-filter:blur(8px);border-radius:999px;padding:12px 16px}.bottom{position:absolute;bottom:max(28px,env(safe-area-inset-bottom));left:20px;right:20px;text-align:center}.bottom p{font-size:12px;text-shadow:0 1px 6px black}.bottom button{margin:0 4px}.scan-frame{position:absolute;left:18%;right:18%;top:30%;height:32%;border:1px solid #ffffff80;border-radius:18px;box-shadow:0 0 0 1px #0002}#hud[data-found="true"] .scan-frame{display:none}#notice{position:fixed;z-index:4;top:50%;left:50%;transform:translate(-50%,-50%);width:min(85vw,360px);padding:20px 24px;border-radius:12px;background:#14231eeb;text-align:center;line-height:1.8;font-size:13px;box-shadow:0 4px 24px #0004}#notice button{background:#c0ed91;color:#17301a}
/* Published experience has no editor or tracking overlays. Preview retains diagnostics. */
html:not([data-preview="true"]) .topbar,html:not([data-preview="true"]) #tip,#scan{display:none!important}
#sound,#play{display:none!important}
#preparing{position:fixed;z-index:3;left:50%;bottom:max(28px,env(safe-area-inset-bottom));transform:translateX(-50%);width:max-content;max-width:calc(100vw - 40px);padding:10px 16px;border-radius:999px;background:#17241bd9;color:#fff;font-size:12px;text-align:center;pointer-events:none}
#start-screen{position:fixed;inset:0;z-index:4;display:grid;place-items:center;padding:28px;background:radial-gradient(ellipse at 50% 25%,#294333,#101714 70%)}.start-card{width:min(100%,380px);text-align:center}.start-icon{font-size:64px;color:#c0ed91}.eyebrow{font-size:11px;letter-spacing:3px;color:#b5c6b9}.start-card h1{font-size:34px;font-weight:600;letter-spacing:2px;margin:24px 0 16px}.start-card p{line-height:1.9;color:#c1cdc5}.start-card #begin{display:block;width:100%;margin:32px 0 18px;background:#c0ed91;color:#183023;border:0;font-size:17px;font-weight:600;padding:17px}.start-card #begin:disabled{opacity:.6;cursor:wait}.start-card .start-help{font-size:12px;color:#92a79b}#notice{z-index:5}