:root{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color-scheme:light;--fold:.65;--thumb:84px;--track:calc(100% - var(--thumb));background:#f4f5f7;color:#3e4857}
*{box-sizing:border-box}html,body{width:100%;height:100%;margin:0;overflow:hidden;overscroll-behavior:none}body{background:radial-gradient(ellipse at 50% 38%,#fff 0%,#f9fafb 45%,#eceef2 100%)}
#experience{height:100svh;min-height:240px;position:relative;isolation:isolate}#stage{position:absolute;inset:0 0 145px;touch-action:none;cursor:grab;outline:none;-webkit-tap-highlight-color:transparent}#stage:active{cursor:grabbing}#stage:focus-visible{outline:2px solid #9cabb9;outline-offset:-8px;border-radius:24px}#stage canvas{display:block;width:100%;height:100%;opacity:0;transition:opacity .7s}body.ready #stage canvas{opacity:1}
.slider-dock{position:absolute;z-index:3;left:50%;bottom:max(42px,env(safe-area-inset-bottom));transform:translateX(-50%);width:min(510px,calc(100% - 52px));height:82px;display:flex;align-items:center}
.fold-control{width:100%;height:76px;position:relative;touch-action:none;user-select:none;-webkit-user-select:none;--travel:calc(100% - var(--thumb));filter:drop-shadow(0 18px 23px #a0aaba19)}
.slider-rail{height:14px;position:absolute;left:calc(var(--thumb)/2);right:calc(var(--thumb)/2);top:31px;background:linear-gradient(180deg,#cbd0d773,#e6e9edaa 45%,#ffffffb0);border-radius:20px;box-shadow:inset 0 1.5px 3px #5c68702b,0 1px 0 #ffffffed;overflow:hidden}
.slider-fill{position:absolute;inset:0 auto 0 0;width:calc(var(--fold)*100%);background:linear-gradient(90deg,#a7b9ca85,#a8bfd16b);border-radius:20px}
.rail-marks{position:absolute;inset:4px 0;background:repeating-linear-gradient(90deg,transparent 0,transparent 23px,#687f901a 23px,#687f901a 24px);mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.glass-drop{position:absolute;width:var(--thumb);height:58px;top:9px;left:calc(var(--fold)*var(--travel));border-radius:38px;pointer-events:none;display:grid;place-items:center;color:#667582b0;background:linear-gradient(145deg,#fff9 1%,#ffffff25 26%,#faffff0a 48%,#d4e0e538 76%,#ffffffa8);backdrop-filter:blur(2px) saturate(1.4);-webkit-backdrop-filter:blur(2px) saturate(1.4);border:1px solid #ffffffb5;box-shadow:inset 0 2px 2px #fff,inset 0 -2px 3px #77909c40,inset 2px 0 3px #fff9,inset -2px 0 3px #f6ffff,0 5px 12px #76859126,0 1px 2px #67788140;transition:height .2s,top .2s,box-shadow .2s;overflow:hidden;transform:translateZ(0)}
.drop-refract{position:absolute;inset:7px 10px;border-radius:50%;background:radial-gradient(ellipse at 50% 110%,#f7ffff9c,transparent 55%),linear-gradient(180deg,transparent 30%,#bac7d01c 43%,#ffffff47 55%,transparent 72%);box-shadow:inset 0 -1px 1px #ffffff70}
.drop-highlight{position:absolute;inset:3px 12px auto;height:15px;border-radius:50%;background:linear-gradient(180deg,#ffffff9c,transparent);mask-image:linear-gradient(90deg,transparent,#000 20%,#000 80%,transparent)}
.glass-drop svg{width:32px;height:20px;position:relative;filter:drop-shadow(0 1px 0 #ffffffb0)}
.fold-control:has(input:active) .glass-drop{height:66px;top:5px;box-shadow:inset 0 2px 3px #fff,inset 0 -2px 3px #77909c38,inset 2px 0 3px #fffc,inset -2px 0 3px #fff,0 9px 18px #76859130,0 1px 2px #67788140}
#fold{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize;touch-action:none;-webkit-tap-highlight-color:transparent;appearance:none;background:transparent}#fold::-webkit-slider-thumb{appearance:none;width:var(--thumb);height:76px}#fold::-moz-range-thumb{width:var(--thumb);height:76px;border:0}#fold::-moz-range-track{height:14px}.fold-control:has(input:focus-visible) .glass-drop{outline:2px solid #456e91;outline-offset:5px}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}#loading{position:absolute;left:50%;top:45%;width:28px;height:28px;margin:-14px;border:2px solid #c2c8d255;border-top-color:#707b8c;border-radius:50%;animation:spin 1s linear infinite;transition:opacity .3s;pointer-events:none}body.ready #loading{opacity:0}.fallback-message{position:absolute;top:43%;left:10%;right:10%;text-align:center;font-size:16px;line-height:1.6;color:#5b6571}body.failed #loading{display:none}body.failed .slider-dock{display:none}
@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:600px){#stage{bottom:137px;top:4px}.slider-dock{bottom:max(35px,env(safe-area-inset-bottom));width:calc(100% - 38px)}:root{--thumb:80px}}
@media(max-height:510px) and (min-width:600px){#stage{bottom:90px}.slider-dock{bottom:12px;width:360px;height:64px}.fold-control{transform:scale(.9)}}
@media(prefers-reduced-motion:reduce){#stage canvas,.glass-drop{transition:none}#loading{animation:none}}
@media(forced-colors:active){#fold{opacity:1;appearance:auto}.glass-drop,.slider-rail{display:none}}
/* Large-scale UISlider study: a quiet thumb that becomes liquid under touch. */
:root{--thumb:76px}
.slider-rail{height:10px;top:33px;background:#cbd1d87a;box-shadow:inset 0 1px 2px #89939c15,0 1px 0 #ffffff8c}
.slider-fill{background:linear-gradient(90deg,#8fa9bd,#a9bbc9)}
.glass-drop{height:46px;top:15px;background:linear-gradient(165deg,#ffffffed,#f8fafbd9 55%,#edf2f5ce);border-color:#ffffffef;box-shadow:inset 0 1px 1px #fff,inset 0 -1px 2px #899ca329,0 3px 7px #5c6b7926;transform:scaleX(calc(1 + var(--stretch,0))) scaleY(calc(1 - var(--stretch,0)*.30));transition:height .22s cubic-bezier(.2,.8,.2,1),top .22s cubic-bezier(.2,.8,.2,1),background .18s,box-shadow .18s}
.fold-control[data-pressed] .glass-drop{height:54px;top:11px;background:linear-gradient(145deg,#ffffff99 1%,#ffffff18 28%,#faffff05 48%,#d4e0e530 76%,#ffffff95);box-shadow:inset 0 2px 2px #fff,inset 0 -2px 3px #77909c36,inset 2px 0 3px #ffffffa0,inset -2px 0 3px #f6ffff,0 5px 12px #76859126,0 1px 2px #67788130}
.fold-control:has(input:active) .glass-drop{height:54px;top:11px}
@media(max-width:600px){.slider-dock{top:var(--slider-top,65svh);bottom:auto;width:calc(100% - 46px)}:root{--thumb:72px}}
@media(prefers-reduced-motion:reduce){.glass-drop{transition:none;transform:none}}
@font-face{font-family:"Duo SF Display";src:url("./assets/sf-pro-display-semibold.woff2") format("woff2");font-style:normal;font-weight:600;font-display:swap}
@font-face{font-family:"Duo SF Text";src:url("./assets/sf-pro-text-regular.woff2") format("woff2");font-style:normal;font-weight:400;font-display:swap}
.duo-heading{position:absolute;z-index:2;top:max(34px,env(safe-area-inset-top));left:20px;right:20px;text-align:center;color:#1d1d1f}
.duo-heading h1{margin:0;font-family:"Duo SF Display",-apple-system,BlinkMacSystemFont,sans-serif;font-size:48px;font-weight:600;line-height:1.1;letter-spacing:-.025em}
.duo-heading p{margin:10px 0 0;font-family:"Duo SF Text",-apple-system,BlinkMacSystemFont,sans-serif;font-size:12px;line-height:1.5;color:#86868b}
.duo-heading a{color:#06c;text-decoration:none;text-underline-offset:3px}.duo-heading a:hover{text-decoration:underline}.duo-heading a:focus-visible{outline:2px solid #06c;outline-offset:4px;border-radius:2px}
#stage{top:125px;cursor:grab}
@media(max-width:600px){.duo-heading{top:max(30px,env(safe-area-inset-top))}.duo-heading h1{font-size:40px}#stage{top:112px}}
@media(max-height:610px){.duo-heading{top:18px}.duo-heading h1{font-size:30px}.duo-heading p{margin-top:5px;font-size:11px}#stage{top:86px}}

/* Playback and native AR controls. */
.slider-dock{height:auto;display:flex;flex-direction:column;align-items:stretch;bottom:max(24px,env(safe-area-inset-bottom));gap:0}
.fold-control{flex:none}
.ar-actions{display:flex;align-items:center;justify-content:center;gap:20px;min-height:44px;font-family:"Duo SF Text",-apple-system,BlinkMacSystemFont,sans-serif;font-size:12px;line-height:1.4;white-space:nowrap}
.ar-actions button,.ar-actions a{font:inherit;border:0;background:none;padding:10px 0;min-height:44px;display:inline-flex;align-items:center;text-decoration:none;cursor:pointer;-webkit-tap-highlight-color:transparent}
.ar-actions button{color:#73777f}.ar-actions a{color:#06c}.ar-actions [hidden]{display:none}
.ar-actions button:hover,.ar-actions a:hover{text-decoration:underline;text-underline-offset:3px}
.ar-actions button:focus-visible,.ar-actions a:focus-visible{outline:2px solid #06c;outline-offset:4px;border-radius:2px}
#ar-status{font:12px/1.5 "Duo SF Text",-apple-system,BlinkMacSystemFont,sans-serif;color:#73777f;text-align:center;white-space:normal;margin:0 4px 6px}
#stage{bottom:172px}
@media(max-width:600px){.slider-dock{bottom:auto}#stage{bottom:165px}.ar-actions{gap:17px;font-size:12px}}
@media(max-width:350px){.ar-actions{gap:12px;font-size:11px}}
@media(max-height:510px){.slider-dock{top:auto;bottom:max(8px,env(safe-area-inset-bottom));width:min(420px,calc(100% - 36px))}.fold-control{height:62px;transform:scale(.9)}#stage{top:72px;bottom:114px}.duo-heading{top:max(10px,env(safe-area-inset-top))}.duo-heading h1{font-size:26px}.duo-heading p{margin-top:3px}.ar-actions{min-height:38px}.ar-actions button,.ar-actions a{padding:7px 0;min-height:38px}}
:root{--safe-bottom:env(safe-area-inset-bottom,0px);--fold:0}
/* Keep progress on screen until the first 3D frame has actually rendered. */
#loading{top:47%;left:50%;width:min(280px,calc(100% - 64px));height:auto;margin:0;border:0;border-radius:0;animation:none;transform:translate(-50%,-50%);font-family:"Duo SF Text",-apple-system,BlinkMacSystemFont,sans-serif;transition:opacity .25s;pointer-events:none}
.loading-title{margin:0 0 18px;text-align:center;color:#1d1d1f;font-size:17px;line-height:1.4;letter-spacing:-.02em}
.loading-meter{height:4px;border-radius:4px;background:#dce2e8;overflow:hidden}
#loading-bar{display:block;width:100%;height:100%;background:#7e9ab1;transform:scaleX(0);transform-origin:left;transition:transform .16s linear}
.loading-detail{display:flex;justify-content:space-between;gap:16px;margin:10px 0 0;color:#73777f;font-size:11px;line-height:1.4}
#loading-percent{font-variant-numeric:tabular-nums}
body.ready #loading{opacity:0;visibility:hidden;transition:opacity .25s,visibility 0s .25s}
.fold-control:has(input:disabled){opacity:.35}#fold:disabled{cursor:default}.ar-actions button:disabled{opacity:.4;cursor:default;text-decoration:none}
@media(prefers-reduced-motion:reduce){#loading,#loading-bar{transition:none}}