:root{color-scheme:dark;--bg:#0a0a16;--panel:#14132a;--text:#f4f2f8;--muted:#b6b3c8;--faint:#85829c;--line:#ffffff16;--accent:#ffe3dc;--palette-a:#3b2a94;--palette-b:#c4307c;--palette-c:#ec6a5e;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-synthesis:none}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:70px}
body{margin:0;background:var(--bg);color:var(--text);font-size:16px;line-height:1.65}
button,input,a{-webkit-tap-highlight-color:transparent}
button,input{font:inherit}
button,a{touch-action:manipulation}
button{color:inherit;cursor:pointer}
a{color:inherit;text-decoration:none}
button:focus-visible,a:focus-visible,input:focus-visible,div[tabindex]:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:6px}
button{border:0}
button:hover,a:hover{color:#fff}
.skip{position:fixed;top:-100px;left:16px;z-index:20;background:var(--bg);padding:10px}
.skip:focus{top:12px}
.site-header{position:absolute;z-index:5;top:0;left:0;width:100%;display:flex;align-items:center;justify-content:space-between;padding:26px 5%}
.brand{display:flex;gap:10px;align-items:center;font-size:18px;letter-spacing:-.5px;font-weight:600}
.brand img{border-radius:9px}
#language{position:relative;display:grid;grid-template-columns:1fr 1fr;align-items:center;width:84px;height:34px;padding:3px;border:1px solid #ffffff24;background:#0a0a1650;border-radius:25px;color:#ece9f4;font-size:12px;cursor:pointer}
#language::before{content:"";position:absolute;top:3px;left:3px;width:calc(50% - 3px);height:calc(100% - 6px);border-radius:20px;background:#f4f2f8;transition:transform .25s ease}
#language[aria-checked="true"]::before{transform:translateX(100%)}
#language span{position:relative;text-align:center;transition:color .25s}#language[aria-checked="false"] span:first-child,#language[aria-checked="true"] span:last-child{color:#14132a;font-weight:600}
.hero{position:relative;min-height:900px;height:100svh;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden;isolation:isolate;background:radial-gradient(ellipse at 22% 52%,#c4307c88,transparent 62%),radial-gradient(ellipse at 85% 40%,#3b2a9499,transparent 65%),#0a0a16}
.hero canvas,.hero-shade{position:absolute;inset:0;width:100%;height:100%;z-index:-2}
.hero-shade{z-index:-1;background:linear-gradient(#0a0a1640,transparent 45%,#0a0a16 100%)}
.hero-copy{text-align:center;margin-top:32px}
.eyebrow,.section-index{font-size:11px;text-transform:uppercase;letter-spacing:.19em;color:var(--muted)}
.eyebrow{color:#e4e1ee;margin:0 0 14px}
h1{font-size:clamp(66px,7.5vw,112px);font-weight:400;letter-spacing:-.065em;line-height:1.08;margin:0}
h1 small{display:block;font-size:clamp(21px,2.5vw,32px);letter-spacing:-.035em;line-height:1.5;margin-top:15px;font-weight:400}
html[lang=zh-CN] h1{letter-spacing:.06em}
html[lang=zh-CN] h1 small{letter-spacing:.03em}
.lyric-card{border:1px solid #ffffff30;background:linear-gradient(125deg,#ffffff14,#ffffff08),#14112a66;box-shadow:0 28px 80px #0005,inset 0 1px #ffffff0a;border-radius:22px;backdrop-filter:blur(28px);-webkit-backdrop-filter:blur(28px)}
.hero-card{width:min(640px,calc(100% - 40px));height:288px;margin:30px 0 26px;padding:24px 36px;text-align:left}
.track-header{display:flex;align-items:center;gap:10px;margin-bottom:12px;color:#d9d6e4;font-size:13px;letter-spacing:.02em}
.cover{display:block;width:27px;height:27px;border-radius:7px;background:conic-gradient(from 40deg,var(--palette-a),var(--palette-b),var(--palette-c),var(--palette-a))}
.track-header .bars{margin-left:auto;display:flex;align-items:center;gap:3px;height:16px}
.bars i{display:block;width:2px;height:8px;background:#efeaf6;border-radius:2px}
.bars i:nth-child(2){height:15px}
.bars i:nth-child(3){height:11px}
.lyric-window{height:192px;overflow:hidden;position:relative;mask-image:linear-gradient(transparent,#000 10%,#000 88%,transparent)}
.lyric-stack{position:relative;transition:transform 850ms cubic-bezier(.22,1.4,.36,1)}
.lyric-row{height:64px;font-size:22px;color:#d2cfe0;filter:blur(.65px);opacity:.5;transform:scale(.96);transform-origin:left center;transition:filter .7s,opacity .7s,transform .7s}
.lyric-row.current{filter:none;opacity:1;transform:scale(1)}
.sing-line{position:relative;display:inline-block;white-space:nowrap}
.sing-line .base{color:#d2cfe0}
.sing-line .lit{position:absolute;inset:0;color:#ffffff;text-shadow:0 0 18px #ffd9d055;mask-image:linear-gradient(90deg,#000 0%,#000 calc(var(--progress,0%) - 5%),transparent calc(var(--progress,0%) + 5%));-webkit-mask-image:linear-gradient(90deg,#000 0%,#000 calc(var(--progress,0%) - 5%),transparent calc(var(--progress,0%) + 5%))}
.current .sing-line{transform:translateY(var(--lift,0px))}
.lyric-row .translation{font-size:13px;margin-top:2px;color:#e0dcea}
.download-wrap{text-align:center}
.download{display:inline-flex;align-items:center;gap:28px;border-radius:100px;background:#ffffff;color:#16121f;padding:13px 25px;font-size:14px;font-weight:600;box-shadow:0 5px 24px #0002;transition:background .2s,transform .2s}
.download:hover{background:#ffece7;color:#16121f;transform:translateY(-2px)}
.requirements{font-size:11px;color:var(--muted);margin:12px 16px 0}
.download-mobile{display:none}
.discover{display:flex;flex-direction:column;align-items:center;gap:8px;font-size:10px;letter-spacing:.12em;color:var(--muted);position:absolute;bottom:25px}
.content-width,.features{max-width:1100px;padding:0 40px;margin:0 auto}
.features{padding-top:75px}
.feature{display:grid;grid-template-columns:1fr 1.18fr;gap:85px;align-items:center;min-height:440px;padding:65px 0}
.feature.reverse{grid-template-columns:1.18fr 1fr}
.reverse .feature-copy{order:2}
.feature-copy h2,h2{font-weight:400;letter-spacing:-.04em;font-size:clamp(30px,3vw,42px);line-height:1.3;margin:18px 0}
.feature-copy>p:last-child{font-size:16px;color:var(--muted);max-width:360px;line-height:1.85}
.demo{height:300px;position:relative;border:1px solid var(--line);border-radius:24px;overflow:hidden;background:#110f22}
.color-demo{display:flex;flex-direction:column;align-items:center;justify-content:flex-end;background:#110f22;isolation:isolate}
.color-orb{position:absolute;inset:-50%;z-index:-1;background:radial-gradient(ellipse at 36% 47%,var(--palette-a),transparent 48%),radial-gradient(ellipse at 65% 50%,var(--palette-b),transparent 52%),var(--palette-c);filter:blur(30px);opacity:.55;transition:background 1.2s}
.mini-lyric{font-size:23px;letter-spacing:-.04em;margin-bottom:35px;text-shadow:0 2px 25px #0005}
.swatches{display:flex;gap:15px}
.swatch{height:36px;width:36px;border-radius:10px;position:relative;box-shadow:0 4px 10px #0004}
.swatch[aria-pressed=true]:after{content:"";position:absolute;inset:-5px;border:1px solid #edf4e4;border-radius:14px}
.amber{background:conic-gradient(#354e55,#caad76,#67473b,#354e55)}
.blue{background:conic-gradient(#355673,#9fb5c6,#345747,#355673)}
.rose{background:conic-gradient(#6f3e50,#c78c78,#564567,#6f3e50)}
.demo-caption{color:#e4e1ee;font-size:12px;letter-spacing:.02em;margin:20px 10px}
.tiny{font-size:10px;color:var(--muted)}
.word-demo{display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(135deg,color-mix(in srgb,var(--palette-a) 62%,#0a0a16),color-mix(in srgb,var(--palette-b) 48%,#0a0a16) 58%,color-mix(in srgb,var(--palette-c) 42%,#0a0a16))}
.word-demo .tiny{margin:0 0 25px}
.word-line{font-size:25px;font-weight:500;letter-spacing:-.04em}
.word-line span{color:#7c8983;display:inline-block;transition:color .3s,transform .4s,text-shadow .3s;margin-right:.24em}
.word-line span.active{color:#f1ffe8;transform:translateY(-2px);text-shadow:0 0 20px #c4f0ac55}
.translation{font-size:12px;color:var(--muted)}
.word-demo .translation{margin:8px 0 26px}
.timeline{display:flex;gap:5px;width:70%}
.timeline i{height:3px;flex:1;background:#344039;border-radius:3px;overflow:hidden}
.timeline i:before{content:"";display:block;height:100%;width:var(--fill,0%);background:#d8eacb}
.text-button{background:transparent;color:var(--muted);font-size:11px;margin-top:17px}
.text-button:hover{color:var(--text)}
.dissolve-demo{display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(135deg,color-mix(in srgb,var(--palette-a) 62%,#0a0a16),color-mix(in srgb,var(--palette-b) 48%,#0a0a16) 58%,color-mix(in srgb,var(--palette-c) 42%,#0a0a16))}
.dissolve-stage{width:100%;height:180px}
.dissolve-stage canvas{width:100%;height:100%;display:block}
.pill{padding:6px 13px;background:#ffffff0a;border:1px solid #ffffff20;border-radius:30px;font-size:11px}
.pill:hover{background:#ffffff14}
.pill[aria-pressed=true]{border-color:#b8d3aa88;color:var(--accent)}
.dissolve-demo .demo-caption{margin:9px 10px 0}
.placement-demo{background:linear-gradient(135deg,color-mix(in srgb,var(--palette-a) 62%,#0a0a16),color-mix(in srgb,var(--palette-b) 48%,#0a0a16) 58%,color-mix(in srgb,var(--palette-c) 42%,#0a0a16));padding:0 20px}
.desktop-line{position:absolute;left:0;right:0;bottom:74px;border-top:1px solid #ffffff12}
.desktop-dot{position:absolute;top:55px;right:30px;width:80px;height:82px;border-radius:12px;background:#c4d5d910;border:1px solid #ffffff12;z-index:2;pointer-events:none;transition:opacity .4s}
.placement-demo.on-top .desktop-dot{z-index:0}
.movable-card{position:absolute;width:70%;height:128px;left:15%;top:43px;padding:17px 20px;border-radius:15px;cursor:grab;touch-action:none;user-select:none;z-index:1;transform-origin:center}
.movable-card p{font-size:18px;margin:8px 0 0;white-space:nowrap;letter-spacing:-.04em}
.movable-card .translation{font-size:10px}
.resize-grip{position:absolute;right:8px;bottom:4px;font-size:19px;color:#abb7ad;cursor:nwse-resize;padding:2px 5px}
.placement-demo.locked .movable-card{pointer-events:none}
.placement-demo.locked .resize-grip{opacity:0}
.placement-controls{position:absolute;bottom:40px;left:12px;right:12px;display:flex;gap:7px;justify-content:center;align-items:center}
.placement-demo>.demo-caption{position:absolute;bottom:1px;left:0;right:0;margin:7px;text-align:center;font-size:9px}
.size-control{display:flex;align-items:center;gap:6px;font-size:10px;color:var(--muted)}
input[type=range]{width:57px;accent-color:#c8d8bf}
.details{padding-top:100px;padding-bottom:100px;border-top:1px solid var(--line);margin-top:65px}
.details h2{margin-bottom:45px}
#detail-list{display:grid;grid-template-columns:1fr 1fr;gap:0 65px;list-style:none;padding:0;margin:0}
#detail-list li{padding:20px 0;border-top:1px solid var(--line);font-size:14px;color:#c1cbc8}
#detail-list li:before{content:"+";color:var(--faint);padding-right:15px}
.players{text-align:center;padding-top:55px;padding-bottom:100px}
.players h2{margin:20px 0 35px}
#player-list{display:flex;justify-content:center;gap:50px;padding:0;list-style:none;font-size:20px;letter-spacing:-.025em}
.players>p:last-child{color:var(--muted);font-size:13px;max-width:560px;margin:30px auto 0}
.faq{max-width:850px;padding-top:60px;padding-bottom:80px}
.faq h2{margin-bottom:35px}
details{border-bottom:1px solid var(--line);padding:21px 0}
summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;font-size:16px}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";font-size:22px;color:var(--faint);margin-left:20px}
details[open] summary:after{content:"−"}
details p{font-size:14px;color:var(--muted);max-width:650px;line-height:1.9;padding-right:25px;margin-bottom:4px}
.closing{text-align:center;padding-top:50px;padding-bottom:120px}
.closing-star{font-size:30px;color:#c7daba}
.closing h2{margin-top:20px}
.text-link{font-size:14px;color:var(--accent);border-bottom:1px solid #a6bca64d;padding-bottom:6px}
footer{border-top:1px solid var(--line);padding-top:28px!important;padding-bottom:35px!important;font-size:11px;color:var(--muted)}
.footer-row{display:flex;justify-content:space-between}
.footer-row div{display:flex;gap:24px}
footer p{font-size:10px;color:var(--faint);margin-top:16px}
.is-paused .bars i{height:4px!important}
@media(min-width:1500px){.hero{max-height:1200px}
}
@media(max-height:850px) and (min-width:701px){.hero{min-height:760px}
.hero-card{margin:28px 0 25px}
.hero-copy{margin-top:35px}
h1{font-size:76px}
.eyebrow{margin-bottom:10px}
}
@media(max-width:800px){.feature,.feature.reverse{gap:35px;grid-template-columns:1fr 1.1fr}
.feature-copy h2{font-size:28px}
.word-line{font-size:21px}
.mini-lyric{font-size:20px}
.placement-controls{gap:4px}
.pill{padding:6px 9px}
.size-control span{display:none}
.movable-card{padding:17px 12px}
.movable-card p{font-size:16px}
}
@media(max-width:700px){.site-header{padding:20px 20px}
.hero{height:100svh;min-height:790px;max-height:1000px}
.hero-copy{margin:38px 16px 0}
h1{font-size:76px}
h1 small{font-size:21px;max-width:340px;margin:18px auto 0}
.eyebrow{font-size:9px}
.hero-card{width:calc(100% - 44px);max-width:440px;height:272px;margin:38px 0 30px;padding:22px}
.lyric-row{font-size:clamp(14px,4.1vw,17px)}
.download-desktop{display:none}
.download-mobile{display:inline}
.download{pointer-events:none}
.requirements{max-width:290px;font-size:10px;line-height:1.7}
.discover{bottom:22px}
.features,.content-width{padding-left:16px;padding-right:16px}
.features{padding-top:25px}
.feature,.feature.reverse{grid-template-columns:1fr;gap:22px;padding:48px 0;min-height:0}
.reverse .feature-copy{order:0}
.feature-copy h2{font-size:31px;margin-top:15px}
.feature-copy>p:last-child{max-width:100%;font-size:14px}
.section-index{font-size:10px}
.demo{height:280px}
.mini-lyric{font-size:24px}
.word-line{font-size:25px}
.details{margin-top:35px;padding-top:60px;padding-bottom:50px}
.details h2{margin-bottom:30px}
#detail-list{grid-template-columns:1fr;gap:0}
#detail-list li{font-size:13px;padding:17px 0}
.players{padding-top:40px;padding-bottom:50px}
#player-list{gap:22px;font-size:16px;flex-wrap:wrap}
.players>p:last-child{font-size:12px}
.faq{padding-top:40px;padding-bottom:40px}
.closing{padding-top:35px;padding-bottom:75px}
.closing h2{font-size:29px}
.movable-card p{font-size:18px}
.placement-controls{gap:9px}
.pill{padding:6px 13px}
.size-control span{display:inline}
.footer-row{gap:20px}
footer p{line-height:1.9}
footer{padding-top:24px!important}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}
*,*:before,*:after{animation:none!important;transition-property:opacity,background-color,color!important;transition-duration:.35s!important}
.hero-card{transform:none}
.lyric-stack{transition:none}
.current .sing-line{transform:none}
.word-line span.active{transform:none}
.download:hover{transform:none}
}

/* Interactive desktop — isolated from the four smaller feature demonstrations. */
.hero{height:auto;min-height:0;max-height:none!important;padding:100px 24px 65px;background:var(--bg);overflow:visible}
.hero-copy{margin:0 0 24px}.hero h1{font-size:clamp(42px,4vw,56px)}.hero h1 small{font-size:clamp(18px,2vw,25px);margin-top:12px}
.hero .discover{position:static;margin-top:25px}.hero .download-wrap{margin-top:10px}
#interactive-demo{position:relative;width:min(1100px,100%,calc(max(480px,100svh - 360px)*1.6));aspect-ratio:16/10;border:1px solid #ffffff30;border-radius:20px;overflow:hidden;isolation:isolate;background:radial-gradient(ellipse at 25% 60%,var(--track-b,#c4307c),transparent 80%),var(--track-a,#3b2a94);box-shadow:0 30px 100px #0005}
#interactive-demo #aurora{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.mac-menu{position:absolute;inset:0 0 auto;z-index:5;height:30px;background:#13132670;backdrop-filter:blur(14px);display:flex;justify-content:space-between;align-items:center;padding:0 18px;font-size:11px;color:#eee9f7}
#demo-player{position:absolute;left:9%;top:27%;width:300px;height:146px;z-index:2;border:1px solid #ffffff30;border-radius:15px;background:#181629ed;box-shadow:0 15px 40px #0005;padding:14px 16px;cursor:grab;touch-action:none;user-select:none}
.player-heading{display:flex;align-items:center;gap:12px}.player-heading strong{display:block;font-size:13px;font-weight:500}.player-heading small{display:block;font-size:10px;color:var(--muted)}
.demo-cover{width:42px;height:42px;border-radius:10px;background:conic-gradient(from 35deg,var(--track-a),var(--track-b),var(--track-c),var(--track-a));box-shadow:inset 0 0 15px #ffffff30}
.transport{display:flex;gap:6px;align-items:center;margin-top:6px}.transport button{background:none;border-radius:7px;width:32px;height:32px;font-size:19px}.transport button:hover{background:#ffffff12}#demo-play{display:grid;place-items:center;border-radius:50%;background:#f4f2f8;color:#14132a}#demo-play:hover{background:#fff}#demo-play svg{width:14px;height:14px;fill:currentColor}.transport output{margin-left:auto;color:var(--muted);font-size:10px;font-variant-numeric:tabular-nums}
#demo-progress{display:block;width:100%;height:16px;margin:2px 0 0;accent-color:#eee2ed;cursor:pointer}
#demo-card{position:absolute;left:40%;top:40%;width:48%;height:242px;padding:24px 28px;z-index:3;cursor:grab;touch-action:none;user-select:none;--lyric-size:25px;will-change:opacity}
.demo-card-content{height:100%;overflow:hidden;transition:opacity .3s}.demo-card-title{font-size:10px;color:#e9e2ef;margin-bottom:12px}.demo-previous,.demo-following{font-size:calc(var(--lyric-size)*.76);line-height:1.4;opacity:.4;filter:blur(.4px);margin:10px 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.demo-current{font-size:var(--lyric-size);line-height:1.55;font-weight:500;white-space:pre-wrap;overflow-wrap:break-word;letter-spacing:-.03em}
.demo-current span{display:inline-block;white-space:pre;background:linear-gradient(90deg,#fff 0 var(--word,0%),#c3b6cc var(--word,0%) 100%);background-clip:text;-webkit-background-clip:text;color:transparent;transform:translateY(var(--word-lift,0px))}
.demo-translation{font-size:12px;color:#eee2ed;margin:4px 0 8px}.demo-toolbar{position:absolute;right:9px;top:-1px;display:flex;gap:4px;opacity:0;transition:opacity .2s;z-index:4;padding:5px;background:#211b35;border-radius:10px;pointer-events:auto}
.demo-toolbar button{font-size:10px;border-radius:7px;padding:5px 9px;background:#ffffff0c}
#demo-card:hover .demo-toolbar,#demo-card:focus-within .demo-toolbar,.card-locked .demo-toolbar{opacity:1}
#demo-card .demo-card-content{transition:opacity .25s ease}#interactive-demo:not(.card-desktop) #demo-card.is-faded .demo-card-content{opacity:.35}
#demo-resize{position:absolute;bottom:2px;right:3px;width:29px;height:29px;background:none;cursor:nwse-resize;color:#d9c9df}
#demo-card.compact{padding-top:16px;padding-bottom:14px}#demo-card.compact .demo-card-title,#demo-card.compact .demo-previous,#demo-card.compact .demo-following{display:none}
.card-locked #demo-card{pointer-events:none}.card-locked #demo-resize{visibility:hidden}.card-locked #demo-card .demo-toolbar{pointer-events:auto}
.card-desktop #demo-card{z-index:1}#demo-card.dissolved{pointer-events:none}#demo-card.dissolved .demo-toolbar{opacity:0;pointer-events:none}
#demo-gate{position:absolute;inset:30px 0 0;z-index:6;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#0c0b2266;backdrop-filter:blur(8px);transition:opacity .7s,visibility .7s}
#demo-start{background:#f8f0f5;color:#261c32;padding:17px 24px;border-radius:40px;font-size:15px;box-shadow:0 8px 40px #0003}#demo-start:disabled{opacity:.5;cursor:wait}
#demo-message{font-size:11px;color:#eee2ed}.has-started #demo-gate{opacity:0;visibility:hidden;pointer-events:none}
.simulation-note{font-size:10px;color:var(--muted);text-align:center;margin:17px 0 22px}
@media(max-width:819px){
.hero{padding:115px 18px 45px;height:auto;min-height:0}.hero-copy{margin:0 0 30px}.hero h1{font-size:54px}.hero h1 small{font-size:18px}.hero .eyebrow{font-size:9px}
#interactive-demo{aspect-ratio:auto;height:390px;max-width:540px;background:transparent;border:0;box-shadow:none;overflow:visible}
#interactive-demo #aurora,.mac-menu,.demo-cover,.player-heading,#demo-prev,#demo-next,.demo-toolbar,#demo-resize{display:none!important}
#demo-card{left:0!important;top:0!important;width:100%!important;height:275px!important;padding:24px!important;--lyric-size:23px!important;cursor:default;pointer-events:none!important}
#demo-card .demo-card-title,#demo-card .demo-previous,#demo-card .demo-following{display:block!important}
#demo-card .demo-card-content{opacity:1!important}
#demo-player{left:0!important;top:290px!important;width:100%!important;height:90px!important;background:transparent;border:0;padding:0 18px;box-shadow:none;cursor:default}
.transport{margin:0}.transport button{width:40px;height:40px}.transport output{font-size:12px}#demo-progress{margin-top:8px}
#demo-gate{inset:0;border-radius:20px}#demo-start{font-size:13px;padding:16px 20px}
.simulation-note{max-width:340px;line-height:1.8}.hero .download-mobile{display:inline}.hero .download-desktop{display:none}.hero .requirements{font-size:10px}.hero .discover{margin-top:25px}
}
@media(prefers-reduced-motion:reduce){.demo-current span{transform:none}#demo-card{will-change:auto}}