/* Chengyu / light, depth and timing. Original design, no external fonts or UI kits. */
:root{--pointer-x:50%;--pointer-y:50%;--tilt-x:0deg;--tilt-y:0deg;--magnet-x:0px;--magnet-y:0px;--reveal-distance:18px;--reveal-delay:0ms;--focus-ring:0 0 0 4px rgba(var(--accent-rgb),.18)}
html{scroll-padding-top:95px}body{font-kerning:normal;text-rendering:optimizeLegibility}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}input[type=range]{accent-color:var(--accent);cursor:pointer;width:100%;min-height:30px;padding:0!important;box-shadow:none!important}
:focus-visible{outline:2px solid var(--accent);outline-offset:4px}.btn{translate:var(--magnet-x,0px) var(--magnet-y,0px);transition:transform 220ms var(--curve),translate 180ms var(--curve),background 220ms,box-shadow 220ms;border-radius:calc(var(--radius)*.65);isolation:isolate}.btn:active:not(:disabled){transform:translateY(1px) scale(.975)}.btn .icon{transition:transform 240ms var(--curve)}.btn:hover .icon:last-child{transform:translateX(2px)}.btn[disabled]{cursor:wait}.btn[data-pending-disabled]::after{content:'';display:inline-block;width:12px;height:12px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;margin-left:6px;animation:cy-spin .7s linear infinite}.btn .ripple{position:absolute;display:block;border-radius:50%;background:currentColor;opacity:.16;transform:scale(0);animation:cy-button-ripple .65s var(--curve) forwards;pointer-events:none;z-index:-1}
[data-kinetic-card]{position:relative;isolation:isolate;transition:transform var(--duration) var(--curve),box-shadow 250ms,border-color 250ms,opacity var(--duration) var(--curve);transition-delay:var(--reveal-delay,0ms)}
html[data-motion="1"] [data-kinetic-card].pointer-active{transform:perspective(1000px) translateY(calc(-1*var(--lift))) rotateX(var(--tilt-x)) rotateY(var(--tilt-y));border-color:rgba(var(--accent-rgb),.22);box-shadow:0 18px 42px -22px rgba(var(--accent-rgb),.24)}
[data-kinetic-card]::after{content:'';position:absolute;inset:0;border-radius:inherit;pointer-events:none;z-index:2;opacity:0;background:radial-gradient(260px circle at var(--pointer-x) var(--pointer-y),rgba(var(--accent-rgb),.11),transparent 72%);transition:opacity 250ms}
html[data-spotlight="1"] [data-kinetic-card].pointer-active::after{opacity:1}
html[data-sheen="1"] .card-cover::after{content:'';position:absolute;inset:-40%;background:linear-gradient(115deg,transparent 40%,rgba(255,255,255,.18) 50%,transparent 60%);transform:translateX(-80%);transition:transform 800ms var(--curve);pointer-events:none}.card-cover{position:relative;overflow:hidden}html[data-sheen="1"] .content-card:hover .card-cover::after{transform:translateX(80%)}
.hero{border:1px solid rgba(var(--accent-rgb),.10);box-shadow:0 24px 90px -60px rgba(var(--accent-rgb),.28)}.hero-copy .eyebrow{display:inline-flex;align-items:center;gap:9px}.hero-copy .eyebrow::before{content:'';height:6px;width:6px;flex:none;background:var(--accent);border-radius:50%;box-shadow:0 0 0 4px rgba(var(--accent-rgb),.09)}.hero-art{translate:var(--parallax-x,0px) var(--parallax-y,0px);transition:translate .8s var(--curve)}.hero h1{letter-spacing:-.035em;text-wrap:balance}.hero-description{text-wrap:pretty}.quick-link{overflow:hidden}.quick-icon{transition:transform .5s var(--curve)}.quick-link:hover .quick-icon{transform:rotate(-6deg) scale(1.06)}.section-heading h2{letter-spacing:-.03em}.card-title{line-height:1.65}.admin-nav a{transition:background 200ms,color 200ms,translate 260ms var(--curve)}.admin-nav a:hover{translate:3px 0}.admin-nav a.active{box-shadow:inset 3px 0 var(--accent)}.admin-title h1{letter-spacing:-.035em}.admin-title p{max-width:650px}.admin-header{border-bottom-color:rgba(var(--accent-rgb),.08)}
/* Reveal nodes are never hidden unless the engine has actually installed observers. */
.reveal{opacity:1;transform:none;filter:none}.reveal.cy-wait{opacity:0;transform:translateY(var(--reveal-distance));transition:opacity var(--duration) var(--curve),transform var(--duration) var(--curve),filter var(--duration) var(--curve);transition-delay:var(--reveal-delay,0ms)}
html[data-reveal-style="scale"] .reveal.cy-wait{transform:translateY(calc(var(--reveal-distance)*.5)) scale(.965)}html[data-reveal-style="blur"] .reveal.cy-wait{transform:translateY(calc(var(--reveal-distance)*.5));filter:blur(4px)}.reveal.visible{opacity:1;filter:none;transition:opacity var(--duration) var(--curve),transform var(--duration) var(--curve),filter var(--duration) var(--curve),box-shadow .25s,border-color .25s;transition-delay:var(--reveal-delay,0ms)}
html[data-theme-transition]::view-transition-old(root),html[data-theme-transition]::view-transition-new(root){animation-duration:var(--duration);animation-timing-function:var(--curve);mix-blend-mode:normal}html[data-theme-transition="iris"]::view-transition-old(root){animation:none}html[data-theme-transition="iris"]::view-transition-new(root){animation:none;z-index:2}html[data-theme-transition="slide"]::view-transition-new(root){animation-name:cy-theme-slide}
@keyframes cy-theme-slide{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}@keyframes cy-spin{to{transform:rotate(360deg)}}
/* Inspector */
.motion-presets{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-bottom:24px}.motion-preset{display:flex;align-items:center;gap:14px;text-align:left;padding:20px!important;cursor:pointer;color:var(--text);transition:transform .3s var(--curve),border-color .3s;background:var(--surface)}.motion-preset:hover,.motion-preset[aria-pressed=true]{border-color:var(--accent);transform:translateY(-3px)}.motion-preset span:nth-child(2){flex:1;min-width:0}.motion-preset strong{display:block;font-size:14px;font-weight:650}.motion-preset small{display:block;font-size:11px;color:var(--muted);margin-top:6px;line-height:1.7}.motion-preset-number{font-size:26px;line-height:1;color:var(--accent);font-weight:300;font-variant-numeric:tabular-nums}.motion-preset>.icon{width:16px;flex:none}
.motion-studio-grid{display:grid;grid-template-columns:minmax(310px,.95fr) minmax(330px,1.05fr);gap:25px;align-items:start}.motion-controls{padding:28px!important}.motion-controls h2{font-size:21px}.motion-section{border-top:1px solid var(--line);padding:16px 0}.motion-section summary{font-size:13px;font-weight:600;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:10px}.motion-section summary::after{content:'+';font-size:20px;line-height:1;font-weight:300;color:var(--muted)}.motion-section[open] summary::after{content:'-'} .motion-fields{display:grid;grid-template-columns:1fr 1fr;gap:7px 18px;margin-top:22px}.motion-field{min-width:0}.motion-field-toggle{grid-column:1/-1}.motion-field .field{margin-bottom:15px}.motion-field .field>span{display:flex;gap:8px;justify-content:space-between;font-size:11px;line-height:1.8}.motion-field output{color:var(--accent);font-variant-numeric:tabular-nums;white-space:nowrap}.motion-field .toggle-row{padding:10px 0;min-height:44px;font-size:12px}.motion-field select{font-size:12px!important;min-height:43px}.motion-field.inactive-control{opacity:.58}.motion-controls .save-bar{gap:10px;flex-wrap:wrap}.motion-controls .save-bar .btn{margin-left:auto}.motion-preview-column{position:sticky;top:100px;min-width:0;display:grid;gap:20px}.motion-stage{min-height:454px;overflow:hidden;padding:25px!important;position:relative;background:linear-gradient(140deg,rgba(var(--accent-rgb),.10),rgba(var(--surface-rgb),.85));isolation:isolate}.motion-scene{position:absolute;inset:40px 0 0;z-index:-1;overflow:hidden;pointer-events:none}.motion-scene-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(var(--accent-rgb),.08) 1px,transparent 1px),linear-gradient(90deg,rgba(var(--accent-rgb),.08) 1px,transparent 1px);background-size:40px 40px;mask-image:linear-gradient(transparent,#000 45%,transparent)}.motion-orb{position:absolute;right:-35px;top:80px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle at 30% 25%,rgba(255,255,255,.88),rgba(var(--accent-rgb),.1) 34%,rgba(var(--accent-rgb),.45) 68%,rgba(var(--accent-rgb),.08));box-shadow:inset -16px -15px 45px rgba(var(--accent-rgb),.26),0 20px 45px rgba(var(--accent-rgb),.10);animation:cy-orb-float 9s ease-in-out infinite alternate}.motion-orbit{position:absolute;width:370px;height:175px;border:1px solid rgba(var(--accent-rgb),.24);border-radius:50%;right:-110px;top:148px;rotate:-38deg}.motion-dot{position:absolute;right:65px;top:100px;width:12px;height:12px;background:var(--accent);border-radius:50%;box-shadow:0 0 30px rgba(var(--accent-rgb),.4)}.motion-preview-card{width:85%;margin:52px 0 25px;padding:27px;border-radius:var(--radius);border:1px solid rgba(var(--surface-rgb),.8);background:rgba(var(--surface-rgb),.64);backdrop-filter:blur(20px);box-shadow:0 18px 60px -30px rgba(var(--accent-rgb),.3);overflow:hidden}.motion-preview-card h2{font-size:28px;line-height:1.4;letter-spacing:-.04em;margin:16px 0 12px}.motion-preview-card p{font-size:12px;line-height:1.9;color:var(--muted);max-width:260px;margin-bottom:22px}.motion-preview-card .pill{font-size:10px}.motion-stagger-demo{display:flex;gap:10px;margin:0 0 5px;align-items:center}.motion-stagger-demo i{height:5px;width:42px;background:rgba(var(--accent-rgb),.22);border-radius:8px}.motion-stagger-demo i:first-child{background:var(--accent)}
.curve-panel{padding:25px!important}.curve-panel h3{font-size:15px}.curve-inspector{display:grid;grid-template-columns:135px 1fr;gap:25px;align-items:center}.curve-inspector svg{display:block;width:135px;height:230px;overflow:visible}.curve-grid{stroke:var(--line);fill:none;stroke-width:1}.curve-guides{fill:none;stroke:var(--muted);stroke-dasharray:3 3;stroke-width:.7;opacity:.5}.curve-line{fill:none;stroke:var(--accent);stroke-width:2.5;stroke-linecap:round}.curve-inspector circle{fill:var(--surface);stroke:var(--accent);stroke-width:1.8}.curve-inspector circle.curve-end{fill:var(--accent)}.curve-inspector code{display:block;margin:10px 0;font-size:11px;line-height:1.8;overflow-wrap:anywhere;background:rgba(var(--accent-rgb),.06);padding:10px;border-radius:8px}.curve-inspector .hint{font-size:11px;line-height:1.9}.curve-runway{height:2px;background:var(--line);position:relative;margin:28px 10px 10px}.curve-runway i{position:absolute;left:0;top:-4px;height:10px;width:10px;background:var(--accent);border-radius:50%;box-shadow:0 0 0 4px rgba(var(--accent-rgb),.08)}.motion-device-status{margin-top:6px;padding-top:16px;border-top:1px solid var(--line);line-height:1.8}.motion-note{display:flex;align-items:flex-start;gap:14px;padding:0 8px}.motion-note p{font-size:11px;line-height:1.9;color:var(--muted);margin:0}.motion-note .quick-icon{width:32px;height:32px;border-radius:10px;flex:none}.motion-note .icon{width:16px}
@keyframes cy-orb-float{from{transform:translateY(-8px) rotate(-5deg)}to{transform:translateY(10px) rotate(5deg)}}
/* Actual community features, not decorative demonstrations. */
.poll-panel{margin:28px 0;background:linear-gradient(140deg,rgba(var(--accent-rgb),.05),var(--surface));border:1px solid rgba(var(--accent-rgb),.15)}.poll-panel h3{font-size:22px;line-height:1.7;margin-top:10px}.poll-form fieldset{padding:0;border:0;margin:18px 0}.poll-form legend{font-size:12px;color:var(--muted);margin-bottom:12px}.poll-choice{display:flex;align-items:center;gap:12px;padding:15px 17px;border:1px solid var(--line);border-radius:12px;cursor:pointer;font-size:13px;margin:9px 0;background:rgba(var(--surface-rgb),.7);transition:border-color .2s,background .2s,transform .25s var(--curve)}.poll-choice:hover{transform:translateX(3px);border-color:rgba(var(--accent-rgb),.4)}.poll-choice input{accent-color:var(--accent);width:16px;height:16px;flex:none}.poll-choice .icon{width:16px;margin-left:auto;opacity:0;color:var(--accent)}.poll-choice:has(:checked){border-color:var(--accent);background:rgba(var(--accent-rgb),.08)}.poll-choice:has(:checked) .icon{opacity:1}.poll-results{display:grid;gap:16px;margin:22px 0}.poll-result .row{font-size:13px;margin-bottom:8px;align-items:start}.poll-result .row span{overflow-wrap:anywhere}.poll-track{height:7px;border-radius:10px;background:rgba(var(--accent-rgb),.09);overflow:hidden}.poll-track span{display:block;width:var(--poll-share);height:100%;background:var(--accent);border-radius:10px;animation:cy-poll-fill var(--duration) var(--curve) both;transform-origin:left center}.poll-result small{display:block;margin-top:6px;font-size:10px}.poll-panel>.hint{font-size:11px;line-height:1.8}.question-status{display:flex;align-items:flex-start;gap:17px;margin:26px 0;background:rgba(var(--accent-rgb),.05)}.question-status h3{font-size:17px;margin:8px 0}.question-status p{font-size:12px;color:var(--muted);line-height:1.9}.question-status .quick-icon{flex:none}.answer-accepted{background:rgba(var(--accent-rgb),.04);border:1px solid rgba(var(--accent-rgb),.15)!important;border-radius:12px;padding:20px!important;margin-top:14px}.accepted-label{color:var(--accent);display:flex;align-items:center;gap:6px;font-size:11px}.thread-editor{border-bottom:1px solid var(--line);margin-bottom:20px;padding-bottom:14px}.thread-editor .eyebrow{display:block;margin-bottom:18px}.thread-editor .hint{line-height:1.9;font-size:11px}.verification-fields{margin:12px 0 20px}.verification-fields .row{align-items:end;gap:10px}.verification-fields .row .field{flex:1;min-width:0;margin:0}.verification-fields .btn{min-width:92px;margin-bottom:0;flex:none}.verification-fields [data-code-status]{display:block;margin-top:9px;font-size:11px;color:var(--muted);line-height:1.8}.verification-panel{max-width:560px;margin:35px auto}.reading-outline{border:1px solid var(--line);border-radius:14px;padding:16px 20px;margin:26px 0;background:rgba(var(--accent-rgb),.035)}.reading-outline summary{font-weight:600;font-size:13px;cursor:pointer}.reading-outline ol{margin:12px 0 0;padding-left:20px;display:grid;gap:7px;max-height:260px;overflow:auto}.reading-outline li{font-size:12px;line-height:1.8;color:var(--muted)}.reading-outline .subheading{margin-left:15px;font-size:11px}.reading-outline a:hover{color:var(--accent)}[data-reading-body] h2,[data-reading-body] h3,.comment{scroll-margin-top:100px}
@keyframes cy-poll-fill{from{transform:scaleX(0)}to{transform:scaleX(1)}}
/* Every cosmetic layer has a static, low-resource and reduced-motion path. */
html[data-continuous="0"] .hero-art *,html[data-continuous="0"] .ambient::before,html[data-continuous="0"] .ambient::after,html[data-continuous="0"] .particles *,html[data-continuous="0"] .motion-scene *,[data-offscreen="1"] *,html[data-paused="1"] *{animation-play-state:paused!important}html[data-glass="none"] .motion-preview-card{backdrop-filter:none;background:var(--surface);border-color:var(--line)}html[data-economy="1"] .motion-preview-card{backdrop-filter:none;background:var(--surface)}html[data-economy="1"] .motion-scene *{animation:none!important}html[data-economy="1"] [data-kinetic-card]::after{display:none}
html[data-motion="0"] [data-kinetic-card],html[data-motion="0"] .btn,html[data-motion="0"] .hero-art,html[data-motion="0"] .quick-icon,html[data-motion="0"] .admin-nav a,html[data-motion="0"] .motion-preset,html[data-motion="0"] .poll-choice{transform:none!important;translate:none!important}html[data-motion="0"] .reveal{filter:none!important}html[data-motion="0"] .btn .icon{transform:none!important}
@supports not (backdrop-filter:blur(1px)){.glass,.motion-preview-card{background:var(--surface)!important}.motion-stage{background:var(--surface)}}
@media(prefers-reduced-motion:reduce){[data-kinetic-card],.btn,.hero-art,.quick-icon,.admin-nav a,.motion-preset,.poll-choice{transform:none!important;translate:none!important}.reveal{filter:none!important}.btn .icon{transform:none!important}::view-transition-group(*),::view-transition-old(*),::view-transition-new(*){animation:none!important}}
@media(max-width:1200px){.motion-studio-grid{grid-template-columns:minmax(300px,1fr) minmax(290px,1fr);gap:18px}.motion-preview-card{width:94%;padding:22px}.motion-preview-card h2{font-size:25px}.curve-inspector{grid-template-columns:110px 1fr;gap:14px}.curve-inspector svg{width:110px}.motion-preset{padding:17px!important;gap:10px}.motion-preset-number{font-size:22px}.motion-preset small{font-size:10px}.motion-preset>.icon{display:none}}
@media(max-width:980px){.motion-studio-grid{grid-template-columns:1fr}.motion-preview-column{position:static;grid-template-columns:1fr 1fr;align-items:start}.motion-preview-card{width:100%;padding:20px}.motion-stage{min-height:420px}.motion-note{grid-column:1/-1}.curve-inspector{grid-template-columns:95px 1fr;gap:12px}.curve-inspector svg{width:95px}.motion-presets{gap:10px}.motion-controls{padding:24px!important}}
@media(max-width:620px){.motion-presets{grid-template-columns:1fr;gap:9px}.motion-preset{padding:14px 17px!important}.motion-preset>.icon{display:block}.motion-preset small{margin-top:2px}.motion-preview-column{grid-template-columns:1fr}.motion-stage{min-height:430px}.motion-preview-card{max-width:350px;width:90%}.motion-controls{padding:20px!important}.motion-fields{gap:6px 13px}.motion-field .field>span{font-size:10px}.motion-field .toggle-row{font-size:11px;gap:12px}.motion-controls h2{font-size:19px}.motion-preset strong{font-size:13px}.motion-preset-number{font-size:24px}.curve-inspector{grid-template-columns:120px 1fr;gap:16px}.curve-inspector svg{width:120px;height:195px}.curve-panel{padding:21px!important}.poll-panel{padding:22px 18px!important}.poll-panel h3{font-size:18px}.poll-panel .section-heading{align-items:flex-start;flex-wrap:wrap;gap:8px}.poll-choice{padding:13px;font-size:12px}.question-status{padding:20px!important;gap:12px}.question-status h3{font-size:15px}.verification-fields .row{align-items:end}.verification-fields .btn{font-size:11px;padding:12px;min-width:83px}.motion-preview-column{gap:16px}}
@media(max-width:360px){.motion-fields{grid-template-columns:1fr}.curve-inspector{grid-template-columns:95px 1fr;gap:12px}.curve-inspector svg{width:95px}.motion-preview-card{width:100%}.motion-stage{padding:20px!important}.motion-stage>.row .eyebrow{font-size:8px}.motion-preview-card h2{font-size:24px}}
@media print{.motion-preview-column,.motion-presets{display:none}.motion-studio-grid{display:block}.poll-track span{print-color-adjust:exact}}

.verify-page{max-width:560px;margin:35px auto}.verify-page h1{font-size:30px;line-height:1.5;margin:16px 0}.verify-page p{color:var(--muted);font-size:13px;line-height:1.9}.verification-actions{gap:12px;margin:0 0 22px;align-items:center}.verification-actions [data-code-status]{font-size:11px;line-height:1.8;flex:1;min-width:140px}.thread-editor[hidden]{display:none}

.accepted-answer{gap:5px;color:var(--accent);background:var(--accent-soft);font-weight:700}.answer-accepted{border-inline-start:3px solid var(--accent);padding-inline-start:16px}

@keyframes cy-button-ripple{to{transform:scale(1);opacity:0}}