:root{--purple:#5145cd;--ink:#262534;--muted:#777581;--line:#dedde4;--duration:450ms;--ease:cubic-bezier(.22,.8,.25,1)}*{box-sizing:border-box}body{margin:0;background:#f7f6f2;font:15px/1.5 system-ui,sans-serif;color:var(--ink)}button,input,select,textarea{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible,[tabindex]:focus-visible,summary:focus-visible{outline:3px solid #ec8f43;outline-offset:4px}button{color:inherit}header{height:86px;padding:0 34px;display:flex;align-items:center;gap:26px;border-bottom:1px solid var(--line);background:#fff9}.brand{font-size:26px;font-weight:800;letter-spacing:-1.2px;color:var(--ink);text-decoration:none}.brand span{color:var(--purple)}.header-note{font-size:12px;color:var(--muted);margin-left:auto}.count,.pill{font:11px monospace;letter-spacing:.4px;border:1px solid #d6d2e6;padding:6px 10px;border-radius:20px;color:#75639d;background:#f4f1fc}.app{display:grid;grid-template-columns:264px minmax(0,1fr)}aside{padding:28px 16px;border-right:1px solid var(--line);background:#fff7}.small{font:10px/1.6 monospace;letter-spacing:1.9px;color:#93909b}aside>.small{margin:0 12px 20px}.nav-item{display:flex;gap:11px;align-items:center;padding:11px 12px;border-radius:7px;text-decoration:none;color:#64616e;font-size:13px;margin-bottom:3px;transition:.16s}.nav-item:hover{background:#eeece7;color:var(--purple)}.nav-item.active{background:#eae6fc;color:#493ab2;font-weight:650}.nav-number{font:10px monospace;color:#96919f;width:17px}.aside-foot{font-size:12px;color:#8d8895;margin:28px 12px}main{padding:36px clamp(24px,4vw,65px);min-width:0;max-width:1600px}.section-top{display:flex;justify-content:space-between;align-items:center;gap:30px;margin-bottom:27px}h1{font-size:clamp(28px,3vw,42px);line-height:1.2;letter-spacing:-1.4px;margin:8px 0 12px}#intro{color:var(--muted);max-width:620px;margin:0;font-size:14px}.section-icon{font-size:30px;width:70px;height:70px;display:grid;place-items:center;background:#eae5f5;color:#7c68ab;border-radius:20px;flex-shrink:0}.toolbar{display:flex;align-items:center;gap:20px;padding:17px 0;border-block:1px solid var(--line);flex-wrap:wrap;font-size:12px;color:var(--muted)}.toolbar label{display:flex;align-items:center;gap:10px}.toolbar select{font-size:13px;color:var(--ink);max-width:285px;background:#fff;border:1px solid #d9d5df;border-radius:6px;padding:9px 28px 9px 10px}.toolbar input{width:80px;accent-color:var(--purple)}#duration{min-width:49px;font:11px monospace}.toolbar #reset{margin-left:auto}.primary,.secondary,.chip{border-radius:7px;padding:10px 17px;border:1px solid transparent;font-weight:550;font-size:13px;transition:background var(--duration),transform var(--duration),box-shadow var(--duration)}.primary{background:var(--purple);color:white}.primary:hover{background:#6658e0}.secondary{background:white;border-color:#d8d4e0;color:#62596f}.secondary:hover{border-color:#9482b6;background:#f6f3fc}.chip{background:#efebf6;color:#79658d;padding:6px 12px}.experiment-info{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:23px 0 0;min-height:96px}h2{font-size:19px;letter-spacing:-.5px;margin:0 0 5px}.experiment-info p{font-size:13px;color:var(--muted);margin:0;max-width:580px}.pill{white-space:nowrap;font-size:10px;text-transform:uppercase}.stage{position:relative;min-height:380px;margin:20px 0 0;border:1px solid #e3e0e7;border-radius:14px;background-color:#efedf1;background-image:radial-gradient(#d9d5de .7px,transparent .7px);background-size:15px 15px;padding:36px;display:flex;align-items:center;justify-content:center;overflow:hidden;isolation:isolate}.stage.tall{min-height:440px}.demo{width:min(100%,570px);text-align:center}.demo h3{margin:8px 0;font-size:24px;letter-spacing:-.7px}.demo p{font-size:14px;color:var(--muted)}.row{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap}.stack{display:flex;flex-direction:column;gap:15px;align-items:center}.sample-card{background:white;border:1px solid #e1dce7;border-radius:13px;padding:25px;box-shadow:0 12px 28px #4e3b6c0a;width:260px;max-width:100%;transition:all var(--duration) var(--ease)}.sample-card p{font-size:13px;color:var(--muted)}.sample-card h3{margin:8px 0;font-size:20px}.art{height:100px;border-radius:8px;background:linear-gradient(130deg,#d8c8f4 10%,#7b66b1 48%,#f2ad87);margin-bottom:18px}.symbol{font-size:35px;color:#9181ba}.action-big{padding:17px 35px;font-size:17px;position:relative;overflow:hidden;min-width:180px}.result{font-size:12px;color:#81758d;margin-top:20px;min-height:20px}.spinner{width:22px;height:22px;border:2px solid #ffffff55;border-top-color:currentColor;border-radius:50%;display:inline-block;animation:spin 1s linear infinite;vertical-align:middle}.ripple{position:absolute;left:50%;top:50%;width:10px;height:10px;border-radius:50%;background:#ffffff88;animation:ripple var(--duration) ease-out forwards;pointer-events:none}.progress{height:8px;border-radius:10px;background:#e2dcea;overflow:hidden;width:240px;max-width:100%}.progress b{display:block;height:100%;width:0;background:#8570c4;transition:width var(--duration);border-radius:10px}.input{background:#fff;border:1px solid #cec7d9;border-radius:7px;padding:13px;width:100%;color:var(--ink);transition:all var(--duration)}.input:focus{outline:none;border-color:#8066c2;box-shadow:0 0 0 4px #8066c218}.form{width:min(100%,350px);text-align:left}.form label{font-size:13px;color:#6f627f;display:block;margin-bottom:7px}.form .helper{font-size:12px;color:#8f829c;margin-top:8px}.error{color:#b64f55!important}.good{color:#348875!important}.choice{padding:16px;border:1px solid #d6cfe1;background:#fff;border-radius:9px;transition:all var(--duration);position:relative}.choice.selected{border-color:#7f60c1;background:#f2eafa;box-shadow:0 0 0 2px #8c6cc22a}.tick{position:absolute;right:6px;top:4px;font-size:11px;color:#7a59b6}.switch{width:62px;height:34px;border-radius:40px;background:#d6cedf;border:0;padding:4px;transition:background var(--duration);position:relative}.switch b{display:block;width:26px;height:26px;border-radius:50%;background:white;box-shadow:0 2px 5px #0002;transition:transform var(--duration)}.switch[aria-checked=true]{background:#8570be}.switch[aria-checked=true] b{transform:translateX(28px)}.mini-tabs{display:flex;background:#e7e0ef;border-radius:8px;padding:5px;position:relative;gap:4px}.mini-tabs button{z-index:1;padding:9px 20px;background:none;border:0;border-radius:5px;color:#72607c}.mini-tabs button.selected{background:white;color:#6946a0;box-shadow:0 2px 5px #0001}.menu-wrap{position:relative;min-height:230px;padding-top:30px}.dropdown{position:absolute;top:88px;left:50%;width:200px;text-align:left;transform:translateX(-50%);border:1px solid #ded4e7;background:white;padding:8px;border-radius:9px;box-shadow:0 18px 30px #35234218;transform-origin:top}.dropdown button{display:block;width:100%;background:none;border:0;text-align:left;padding:10px;border-radius:5px}.dropdown button:hover{background:#eee6f6}.tooltip{background:#34253f;color:white;border-radius:7px;padding:9px 14px;font-size:12px;box-shadow:0 8px 20px #35234225}.accordion{width:min(100%,460px);text-align:left;background:white;border:1px solid #ddd4e5;border-radius:10px;overflow:hidden}.acc-button{width:100%;padding:19px;background:none;border:0;text-align:left;display:flex;justify-content:space-between;align-items:center;color:var(--ink)}.acc-button span{transition:transform var(--duration)}.acc-content{display:grid;grid-template-rows:0fr;transition:grid-template-rows var(--duration)}.acc-content>div{overflow:hidden}.acc-content p{padding:0 19px 20px;margin:0;font-size:14px;color:var(--muted)}.accordion.open .acc-content{grid-template-rows:1fr}.accordion.open .acc-button span{transform:rotate(180deg)}.overlay{position:absolute;inset:0;background:#21172b80;display:flex;align-items:center;justify-content:center;z-index:9;animation:fade var(--duration)}.modal{background:white;border-radius:14px;padding:30px;width:320px;max-width:90%;box-shadow:0 25px 60px #0003;text-align:left;animation:pop var(--duration) var(--ease)}.modal h3{margin:0 0 9px;font-size:23px}.modal p{font-size:14px;color:var(--muted)}.modal .row{justify-content:flex-start;margin-top:20px}.page-preview{width:100%;max-width:450px;background:white;border-radius:12px;border:1px solid #ddd4e5;overflow:hidden}.page-preview .page-head{padding:12px 18px;border-bottom:1px solid #ede7f1;font:11px monospace;color:#87728f}.page-body{padding:30px;min-height:220px}.page-body h3{margin:0 0 12px}.page-body .art{height:85px}.scroll-box{height:320px;width:100%;max-width:500px;overflow:auto;background:#fff;border-radius:10px;border:1px solid #ddd4e5;position:relative;scroll-behavior:smooth}.scroll-box .scroll-header{position:sticky;top:0;background:#faf7fded;padding:17px;z-index:2;transition:all var(--duration);border-bottom:1px solid #eee6f2;font-size:13px}.scroll-section{padding:36px 24px;min-height:210px;transition:all var(--duration);border-bottom:1px solid #eee6f2;text-align:left}.scroll-section h3{font-size:22px;margin:0 0 8px}.scroll-section p{color:var(--muted);font-size:13px}.skeleton{width:270px;padding:24px;background:white;border-radius:12px;overflow:hidden}.skeleton i{display:block;height:11px;background:#e8e0ed;border-radius:7px;margin:13px 0;position:relative;overflow:hidden}.skeleton i:first-child{height:90px}.skeleton i:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent,#ffffffa0,transparent);animation:shimmer 1.5s infinite}.dots{display:flex;gap:9px}.dots b{width:11px;height:11px;background:#9172b8;border-radius:50%;animation:bounce 1s infinite}.dots b:nth-child(2){animation-delay:.15s}.dots b:nth-child(3){animation-delay:.3s}.toast{background:#fff;border:1px solid #dfd4e7;border-left:4px solid #8e6caf;border-radius:8px;padding:15px 21px;box-shadow:0 12px 25px #43265317;position:absolute;bottom:22px;right:22px;max-width:calc(100% - 44px);animation:slide var(--duration);font-size:13px}.drag-list{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}.drag-item{padding:24px;background:white;border:1px solid #dacde4;border-radius:9px;cursor:grab;touch-action:none;transition:transform var(--duration),box-shadow var(--duration)}.drag-item.dragging{opacity:.5;box-shadow:0 15px 30px #43265330}.dropzone{border:2px dashed #d5c5df;border-radius:10px;padding:24px;min-height:90px;transition:background var(--duration),border var(--duration)}.dropzone.over{background:#e9dcf5;border-color:#9369b0}.bars{display:flex;gap:18px;height:150px;align-items:flex-end;justify-content:center;border-bottom:1px solid #ddd0e5;padding:0 20px}.bars b{display:block;width:44px;height:var(--h);background:linear-gradient(#b49aca,#795898);border-radius:6px 6px 0 0;transition:height var(--duration);position:relative}.bars b span{position:absolute;top:-23px;width:100%;text-align:center;font:11px monospace}.big-number{font-size:58px;font-weight:750;letter-spacing:-3px;color:#79569e;font-variant-numeric:tabular-nums}.ring{width:110px;height:110px;border-radius:50%;background:conic-gradient(#9363b4 var(--progress,65%),#e6d9ed 0);display:grid;place-items:center}.ring:after{content:attr(data-label);width:86px;height:86px;display:grid;place-items:center;background:#f0edf2;border-radius:50%;font-size:20px;color:#866492}.media-stage{position:relative;background:#221e31;color:white;width:100%;max-width:480px;min-height:240px;border-radius:12px;padding:25px;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden}.avatar{width:77px;height:77px;background:#67527e;border-radius:50%;display:grid;place-items:center;font-size:28px;position:relative;margin:12px}.avatar.speaking:after{content:'';position:absolute;inset:-8px;border:2px solid #cfb0ee;border-radius:50%;animation:ring 1.6s infinite}.wave{display:flex;align-items:center;gap:4px;height:40px}.wave b{display:block;width:4px;height:var(--h);background:#baa0d6;animation:wave .65s infinite alternate;animation-delay:var(--delay);border-radius:3px}.player-controls{position:absolute;bottom:12px;left:12px;right:12px;padding:10px;border-radius:6px;background:#ffffff20;display:flex;justify-content:center;gap:15px}.player-controls button{color:white;background:none;border:0}.ambient{width:100%;height:240px;border-radius:12px;position:relative;overflow:hidden;background:linear-gradient(120deg,#ccafd9,#6760b0,#eac19f,#ddabd5);background-size:300% 300%;animation:gradient 7s infinite alternate}.ambient span{position:absolute;color:#fff9;font-size:22px;animation:float 4s ease-in-out infinite;animation-delay:var(--delay);left:var(--x);top:var(--y)}.text-demo{font-size:clamp(28px,4vw,45px);font-weight:750;letter-spacing:-1.4px;min-height:70px;display:flex;align-items:center;justify-content:center;overflow:hidden}.letter{display:inline-block;animation:slide var(--duration) both;animation-delay:calc(var(--i)*45ms)}.section-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:15px}#position{font:11px monospace;color:#9a8ca4}#feedback{height:24px;margin-top:10px;text-align:center;font-size:12px;color:#81738c}footer{font-size:11px;color:#9a91a0;margin-top:35px;max-width:790px}iframe{width:100%;height:920px;border:1px solid #ded8e5;border-radius:12px;background:#f5f4f0}.hover-note{font-size:13px;color:var(--muted)}.focus-target{padding:15px 25px;background:white;border:1px solid #cbbdd7;border-radius:7px;text-decoration:none;color:#786089;transition:all var(--duration)}.focus-target:focus{outline:3px solid #ac70c9;outline-offset:5px}.floating{position:relative;padding-top:12px}.floating label{position:absolute;top:27px;left:13px;pointer-events:none;transition:all var(--duration);background:white;padding:0 3px}.floating:focus-within label,.floating:has(input:not(:placeholder-shown)) label{top:0;color:#8f56ae;font-size:11px}.tag-row{display:flex;gap:7px;flex-wrap:wrap;margin-top:10px}.tag-row button{border:0;background:#eadef2;padding:7px 10px;border-radius:20px;color:#89639e;animation:pop var(--duration)}.line-chart{width:280px;height:145px;overflow:visible}.line-chart path{fill:none;stroke:#9470b4;stroke-width:3;stroke-dasharray:500;stroke-dashoffset:500;animation:draw 1.4s forwards}.confetti{position:absolute;top:45%;left:50%;width:7px;height:11px;background:var(--c);animation:confetti 900ms ease-out forwards;pointer-events:none}.flip{transform:rotateY(180deg)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@keyframes fade{from{opacity:0}to{opacity:1}}@keyframes slide{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:translateY(0)}}@keyframes pop{from{opacity:0;transform:scale(.85)}to{opacity:1;transform:scale(1)}}@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes ripple{to{transform:translate(-50%,-50%) scale(45);opacity:0}}@keyframes shimmer{from{transform:translateX(-100%)}to{transform:translateX(100%)}}@keyframes shake{20%,60%{transform:translateX(-6px)}40%,80%{transform:translateX(6px)}}@keyframes ring{to{transform:scale(1.3);opacity:0}}@keyframes wave{from{transform:scaleY(.25)}to{transform:scaleY(1)}}@keyframes gradient{to{background-position:100% 100%}}@keyframes float{50%{transform:translate(15px,-20px) rotate(20deg)}}@keyframes draw{to{stroke-dashoffset:0}}@keyframes confetti{to{transform:translate(var(--dx),var(--dy)) rotate(300deg);opacity:0}}@keyframes wipe{from{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0)}}@media(max-width:1150px){.app{grid-template-columns:225px 1fr}.header-note{display:none}.count{margin-left:auto}main{padding:28px}.toolbar{gap:12px}.toolbar .speed-label{flex-wrap:wrap}.nav-item{font-size:12px}.section-icon{display:none}}@media(max-width:760px){header{height:70px;padding:0 20px}.brand{font-size:22px}.count{font-size:9px}.app{display:block}aside{padding:13px;border-right:0;border-bottom:1px solid var(--line)}aside>.small,.aside-foot{display:none}nav{display:flex;overflow-x:auto;gap:5px;padding-bottom:4px}.nav-item{white-space:nowrap;margin:0;font-size:12px}main{padding:24px 17px}.stage{padding:24px 16px}.toolbar label:first-child{width:100%;justify-content:space-between}.toolbar select{max-width:75%}.toolbar #reset{margin-left:auto}.experiment-info{gap:12px}.pill{display:none}.experiment-info p{font-size:12px}h1{font-size:30px}.section-bottom .secondary{font-size:11px;padding:8px 10px}iframe{height:1380px}.stage{min-height:365px}.sample-card{padding:18px;width:210px}.choice{padding:12px}.row{gap:8px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}

/* Effect selection mirrors the original hover playground. */
.experiment-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:28px;border-top:1px solid var(--line)}
.effect-sidebar{padding:22px 16px 22px 0;border-right:1px solid var(--line)}
.effect-sidebar h2{font-size:15px;letter-spacing:0;margin:0 10px 5px}
.effect-sidebar>p{font-size:12px;color:var(--muted);margin:0 10px 18px}
#effect-list{display:flex;flex-direction:column;gap:3px}
.effect-choice{display:flex;gap:11px;align-items:center;text-align:left;width:100%;border:0;background:transparent;color:#68616f;border-radius:7px;padding:10px 11px;font-size:13px;line-height:1.4;transition:background .16s,color .16s}
.effect-choice>span{font:10px monospace;color:#96909f;flex:0 0 18px}
.effect-choice:hover{background:#eae6ef;color:var(--purple)}
.effect-choice[aria-pressed=true]{background:#e7e1f8;color:#523b9f;font-weight:650}
.effect-choice[aria-pressed=true]>span{color:#7964a9}
.experiment-workspace{min-width:0}
.experiment-workspace .toolbar{border-top:0}
.experiment-workspace .stage{padding:28px 20px}
.experiment-workspace .experiment-info{align-items:flex-start}
.experiment-workspace .pill{display:none}
@media(min-width:1500px){.experiment-layout{grid-template-columns:240px minmax(0,1fr)}}
@media(max-width:1150px){.experiment-layout{grid-template-columns:185px minmax(0,1fr);gap:18px}.effect-sidebar{padding-right:10px}.effect-choice{font-size:12px;padding:10px 8px}.experiment-workspace .toolbar{gap:10px}.experiment-workspace .toolbar label:first-child{width:auto;justify-content:flex-start}.experiment-workspace .toolbar #reset{margin-left:0}.experiment-workspace .section-bottom{flex-wrap:wrap}}
@media(max-width:760px){.experiment-layout{display:flex;flex-direction:column;gap:20px}.effect-sidebar{border-right:0;border-bottom:1px solid var(--line);padding:20px 0}.effect-sidebar #effect-list{display:grid;grid-template-columns:1fr 1fr;overflow:visible;gap:4px}.effect-choice{font-size:13px}.experiment-workspace .toolbar #reset{margin-left:auto}}
/* Fixed app shell: scrolling belongs to individual panels. */
html,body{height:100%;overflow:hidden}
body{height:100dvh;display:flex;flex-direction:column}
header{height:64px;flex:0 0 64px;padding-inline:24px}
.app{flex:1;min-height:0;overflow:hidden;grid-template-columns:230px minmax(0,1fr)}
.app>aside{min-height:0;overflow:hidden;display:flex;flex-direction:column;padding:18px 12px}
.app>aside>#nav{min-height:0;overflow-y:auto;overscroll-behavior:contain;flex:1}
.aside-foot{margin:15px 12px 0}
.app>main{min-height:0;overflow:hidden;display:flex;flex-direction:column;padding:20px 28px;max-width:none}
.section-top{flex-shrink:0;margin-bottom:15px;gap:18px}
h1{font-size:clamp(24px,2.4vw,36px);margin:4px 0 7px}
.section-icon{width:52px;height:52px;border-radius:14px;font-size:24px}
#intro{font-size:13px}
#lab-panel,#hover-panel{flex:1;min-height:0;overflow:hidden}
#lab-panel[hidden],#hover-panel[hidden]{display:none}
.experiment-layout{height:100%;min-height:0;grid-template-columns:205px minmax(0,1fr);gap:22px}
.effect-sidebar{min-height:0;display:flex;flex-direction:column;overflow:hidden;padding-top:16px;padding-bottom:0}
.effect-sidebar>h2,.effect-sidebar>p{flex-shrink:0}
#effect-list{min-height:0;overflow-y:auto;overscroll-behavior:contain;flex:1;padding-bottom:8px}
.experiment-workspace{min-height:0;display:flex;flex-direction:column;overflow:hidden}
.experiment-workspace .toolbar{flex-shrink:0;padding:10px 0;gap:12px}
.experiment-info{flex-shrink:0;min-height:0;padding:13px 0 0;gap:12px}
.experiment-info h2{font-size:17px}
.experiment-info p{font-size:12px}
.experiment-workspace .stage{flex:1;min-height:0;margin-top:13px;padding:18px;overflow:auto;overscroll-behavior:contain}
#feedback{flex:0 0 20px;height:20px;margin-top:6px;font-size:11px}
.section-bottom{flex-shrink:0;margin-top:6px;flex-wrap:nowrap!important}
.section-bottom .secondary{font-size:11px;padding:8px 10px}
.app>main>footer{flex-shrink:0;font-size:10px;line-height:1.4;margin-top:12px;max-width:none}
#hover-panel{display:flex;flex-direction:column}
.hover-note{flex-shrink:0;margin:0 0 10px;font-size:12px}
#hover-frame{display:block;flex:1;min-height:0;width:100%;height:100%;border-radius:10px}
.scroll-box{height:min(320px,38dvh)}
.media-stage,.ambient{min-height:0;height:min(240px,32dvh)}
.menu-wrap{min-height:210px}
.stage .sample-card{padding:18px}
.stage .art{height:75px;margin-bottom:12px}
.stage .demo.stack{gap:12px}
@media(max-height:740px){header{height:54px;flex-basis:54px}.app>main{padding:14px 22px}.section-top{margin-bottom:10px}.section-icon,.aside-foot{display:none}.app>main>footer{display:none}h1{font-size:27px}.effect-sidebar>p{margin-bottom:12px}.effect-choice{padding-block:8px}.experiment-info{padding-top:9px}.experiment-workspace .stage{margin-top:9px}.stage .sample-card h3{font-size:18px}.stage .sample-card p{margin:8px 0}.stage .art{height:65px}.demo h3{font-size:21px}.media-stage{padding:15px}}
@media(max-width:1050px){.app{grid-template-columns:185px minmax(0,1fr)}.app>main{padding:16px}.experiment-layout{grid-template-columns:165px minmax(0,1fr);gap:14px}.effect-choice{font-size:12px;padding:9px 6px}.effect-sidebar>p{font-size:11px}.experiment-workspace .toolbar{gap:8px}.speed-label input{width:60px}.toolbar button{padding:8px 10px;font-size:12px}}
@media(max-width:760px){header{height:54px;flex-basis:54px;padding-inline:16px}.app{display:flex;flex-direction:column}.app>aside{flex:0 0 52px;padding:6px 12px;border-bottom:1px solid var(--line)}.app>aside>#nav{display:flex;flex-direction:row;overflow-x:auto;overflow-y:hidden;align-items:center;padding:0}.app>main{flex:1;padding:12px}.section-top{margin-bottom:10px}.section-top #intro{display:none}h1{font-size:24px;margin-bottom:0}.experiment-layout{display:grid;grid-template-columns:140px minmax(0,1fr);gap:12px}.effect-sidebar{border-bottom:0;border-right:1px solid var(--line);padding:12px 8px 0 0}.effect-sidebar #effect-list{display:flex;flex-direction:column;overflow-y:auto;overflow-x:hidden}.effect-sidebar h2{font-size:13px;margin-inline:5px}.effect-sidebar>p{display:none}.effect-choice{font-size:11px;gap:5px;padding:9px 5px}.effect-choice>span{flex-basis:15px}.experiment-workspace .toolbar{flex-wrap:wrap;gap:6px}.experiment-workspace .toolbar label:first-child{width:100%}.experiment-workspace .toolbar #reset{margin-left:0}.experiment-info p{display:none}.experiment-info h2{font-size:15px}.experiment-workspace .stage{padding:12px}.section-bottom{gap:5px}.section-bottom .secondary{font-size:10px;padding:6px}.section-bottom #position{display:none}.app>main>footer{display:none}.hover-note{display:none}.stage .sample-card{max-width:100%}.code-dialog{max-height:90dvh}}
.experiment-workspace .stage{align-items:safe center;justify-content:safe center}
.stage>.demo:has(.scroll-box){height:100%;min-height:0}
.stage>.demo>.scroll-box{flex:1;min-height:90px;height:auto}
.stage>.demo:has(.scroll-box)>button{flex-shrink:0}
/* Dark app chrome; demonstration canvases retain their light palette. */
html,body{background:#111115;color:#e9e7ef}
header{background:#15151b;border-color:#2c2b36}
.brand{color:#f3f1f8}.brand span{color:#b7a1ff}
.header-note,.small{color:#93909f}
.count{color:#bba9dc;background:#24202f;border-color:#3b334b}
.app>aside{background:#16161c;border-color:#2d2b37}
.nav-item{color:#aaa5b8}.nav-number{color:#736d85}
.nav-item:hover{background:#23212c;color:#dacafa}
.nav-item.active{background:#30273f;color:#e0cdff}
.nav-item.active .nav-number{color:#bea4e1}
.aside-foot{color:#797284}
#intro,.hover-note{color:#a09aaa}
.section-icon{background:#292333;color:#c4a8e8}
.experiment-layout,.effect-sidebar,.toolbar{border-color:#302c3b}
.effect-sidebar>p,.experiment-info p,.toolbar{color:#9e96ab}
.effect-choice{color:#b2a9c0}.effect-choice>span{color:#7e728e}
.effect-choice:hover{background:#282232;color:#e0cdf8}
.effect-choice[aria-pressed=true]{background:#332640;color:#e7cfff}
.effect-choice[aria-pressed=true]>span{color:#c19cde}
.toolbar .secondary,.section-bottom .secondary{background:#23202b;border-color:#42374e;color:#d7c4e7}
.toolbar .secondary:hover,.section-bottom .secondary:hover{background:#30253c;border-color:#9b73b7;color:#f0ddff}
.toolbar input{accent-color:#b48bd4}
#duration,#position{color:#b5a4c5}
#feedback{color:#bca9ce}
.app>main>footer{color:#82768f}
#hover-frame{border-color:#3a3144}
#nav,#effect-list{scrollbar-color:#51425f #19171f}
/* Scope original light demo colors to the preview, not the app shell. */
.experiment-workspace .stage{--ink:#262534;--muted:#777581;--line:#dedde4;color:var(--ink);border-color:#d9d2e0}
.code-dialog{background:#1d1924;color:#eee6f6;border-color:#53415f}
.code-heading-row h2{color:#eee6f6}.code-eyebrow{color:#c4a0e1}
.code-explanation,.code-caption{color:#b4a4bf}
.code-controls{border-color:#44354f}.code-controls button,.code-close{background:#302539;color:#e8cff9;border-color:#624774}
.code-controls button:hover,.code-close:hover{background:#40304d;border-color:#aa80c5}
.code-dialog pre{background:#100e15;color:#e3d6ec;border:1px solid #3b2e47}
.code-status{color:#cbb0de}
/* Preview-first layout: compact framing, larger examples. */
header{height:48px;flex-basis:48px}
.app>main{padding:12px 20px}
.section-top{margin-bottom:10px;gap:12px}
.section-top .small,.section-top #intro,.section-icon,.hover-note,.app>main>footer{display:none}
.section-top h1{font-size:24px;margin:0;line-height:1.25}
.experiment-layout{gap:18px}
.effect-sidebar{padding-top:12px}
.effect-sidebar>p{display:none}
.effect-sidebar>h2{margin-bottom:12px}
.experiment-workspace .toolbar{padding:8px 0;gap:8px;justify-content:flex-start}
.experiment-workspace .toolbar #reset{margin-left:auto}
.experiment-info{padding-top:10px}
.experiment-info h2{font-size:20px;margin-bottom:3px}
.experiment-info p{font-size:12px}
.experiment-workspace .stage{margin-top:10px;padding:24px;container-type:size}
.stage .action-big{padding:22px 48px;font-size:22px;min-width:230px}
.stage .sample-card{width:340px;padding:25px}
.stage .sample-card h3{font-size:24px}
.stage .sample-card p{font-size:15px}
.stage .sample-card .art{height:135px}
.stage .form{width:min(100%,440px)}
.stage .form label{font-size:16px}
.stage .input{font-size:17px;padding:16px}
.stage .choice{font-size:16px;padding:20px}
.stage .accordion{max-width:590px;width:100%}
.stage .acc-button{font-size:17px;padding:23px}
.stage .media-stage{max-width:600px;height:min(330px,48dvh)}
.stage .avatar{width:100px;height:100px;font-size:38px}
.stage .ambient{height:min(330px,48dvh)}
.stage .text-demo{font-size:clamp(30px,4vw,56px)}
#hover-frame{border:0;border-radius:0}
@container(max-height:340px){.stage .sample-card{padding:18px;width:300px}.stage .sample-card .art{height:85px}.stage .sample-card h3{font-size:21px}.stage .action-big{padding:18px 35px;font-size:20px}}
@media(max-width:760px){header{height:46px;flex-basis:46px}.app>main{padding:9px}.section-top h1{font-size:20px}.experiment-info h2{font-size:17px}.experiment-workspace .stage{padding:14px}.stage .action-big{min-width:0;padding:16px 22px;font-size:18px}.stage .sample-card{width:100%;padding:16px}.stage .sample-card .art{height:100px}.stage .choice{padding:12px;font-size:14px}}