:root{--bg:#fff;--surface:#fff;--ink:#121417;--muted:#5b6270;--line:#d8dce3;--chip-bg:#f2f3f6;--accent:#f5a400;--focus:#2f4bd8;--cost-composite:#1f8a4c;--cost-paint:#b7791f;--cost-layout:#c2410c;--stage-bg:#f7f8fa;--stage-dot:#e1e4ea;--hint-bg:#121417c7;--code-bg:#111318;--code-ink:#e6e8ec;--code-line:#262a31;--font-body:"Pretendard Variable", "Pretendard", system-ui, -apple-system, "Apple SD Gothic Neo", sans-serif;--font-display:var(--font-body);--font-mono:"SF Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--bg:#0e1013;--surface:#16191e;--ink:#eceef2;--muted:#9aa1ad;--line:#2a2f37;--chip-bg:#1f232a;--cost-composite:#5cc98a;--cost-paint:#e0b35a;--cost-layout:#f08a5d;--stage-bg:#e9ebef;--stage-dot:#d3d7de;--code-bg:#0a0c0f;--code-line:#20242b}}:root[data-theme=dark]{color-scheme:dark;--bg:#0e1013;--surface:#16191e;--ink:#eceef2;--muted:#9aa1ad;--line:#2a2f37;--chip-bg:#1f232a;--cost-composite:#5cc98a;--cost-paint:#e0b35a;--cost-layout:#f08a5d;--stage-bg:#e9ebef;--stage-dot:#d3d7de;--code-bg:#0a0c0f;--code-line:#20242b}body{background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:15px;line-height:1.6}.page{max-width:1240px;margin:0 auto;padding-block:40px 64px;padding-inline:20px}button{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.masthead{border-bottom:1px solid var(--line);grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);align-items:end;gap:32px;margin-bottom:28px;padding-bottom:28px;display:grid}.eyebrow{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:0 0 8px;font-size:12px}.eyebrow b{color:var(--ink);font-weight:500}h1{font-family:var(--font-display);letter-spacing:-.04em;text-wrap:balance;margin:0 0 12px;font-size:clamp(40px,6vw,64px);font-weight:800;line-height:1}h1 .playhead{background:var(--accent);vertical-align:-.04em;width:.12em;height:.82em;margin-left:.08em;display:inline-block}.intro{max-width:60ch;color:var(--muted);margin:0}.motion-note{border-left:3px solid var(--accent);background:var(--surface);max-width:60ch;margin:12px 0 0;padding:8px 12px;font-size:14px}.legend{gap:10px;margin:0;font-size:13px;display:grid}.legend div{grid-template-columns:96px 1fr;align-items:baseline;gap:12px;display:grid}.legend dt{margin:0}.legend dd{color:var(--muted);margin:0}.legend-source{color:var(--muted);margin:4px 0 0;font-size:12px}.chips{flex-wrap:wrap;gap:6px;display:flex}.chip{background:var(--chip-bg);white-space:nowrap;border-radius:6px;align-items:center;gap:6px;padding:2px 8px;font-size:12px;line-height:20px;display:inline-flex}.chip:before{content:"";background:var(--dot,transparent);border-radius:2px;width:7px;height:7px}.chip-tag{font-family:var(--font-mono);letter-spacing:.04em;box-shadow:inset 0 0 0 1px var(--line);background:0 0;font-size:11px;font-weight:500}.chip-tag:before{display:none}.chip-tag.is-js{background:var(--ink);color:var(--bg);box-shadow:none}.cost-composite{--dot:var(--cost-composite)}.cost-paint{--dot:var(--cost-paint)}.cost-layout{--dot:var(--cost-layout)}.grid{grid-template-columns:1fr;gap:16px;margin:0;padding:0;list-style:none;display:grid}@media (width>=540px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width>=1040px){.grid{grid-template-columns:repeat(4,minmax(0,1fr))}}.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;flex-direction:column;height:100%;display:flex}.card-body{flex-direction:column;flex:1;gap:6px;padding:14px 16px 16px;display:flex;position:relative}.card-title{margin:0;font-size:16px;font-weight:600;line-height:1.35}.card-open{text-align:left;cursor:pointer;font-weight:inherit;color:inherit;background:0 0;border:0;padding:0;text-decoration:none}.card-open:after{content:"";position:absolute;inset:0}.card-open:focus-visible{outline:none}.card-open:focus-visible:after{outline:2px solid var(--focus);outline-offset:-4px;border-radius:10px}.card-body:hover .card-title{text-underline-offset:3px;text-decoration:underline}.card-summary{color:var(--muted);margin:0 0 6px;font-size:13px;line-height:1.55}.card .chips{margin-top:auto}.stage-wrap{position:relative}.stage{aspect-ratio:4/3;contain:layout paint;background-color:var(--stage-bg);background-image:radial-gradient(var(--stage-dot) 1px, transparent 1px);color:#15171b;max-width:100%;font-family:var(--font-body);background-size:16px 16px;font-size:13px;line-height:1.5;position:relative;overflow:hidden}.card .stage{border-bottom:1px solid var(--line);border-radius:13px 13px 0 0}.stage:not(.is-playing):is([data-kind=once],[data-kind=loop]) *,.stage:not(.is-playing):is([data-kind=once],[data-kind=loop]) :before,.stage:not(.is-playing):is([data-kind=once],[data-kind=loop]) :after,.stage:not(.is-playing) .morph-blob{animation:none!important}.stage-hint{background:var(--hint-bg);color:#fff;font-family:var(--font-mono);pointer-events:none;border-radius:999px;align-items:center;gap:6px;padding:2px 8px;font-size:11px;line-height:18px;display:inline-flex;position:absolute;bottom:8px;left:8px}.stage-hint:before{content:"";background:#9aa1ad;border-radius:50%;width:6px;height:6px}.stage.is-playing+.stage-hint:before{background:var(--accent)}.stage-note{color:#5a3d00;pointer-events:none;background:#fff4d6;border-radius:8px;padding:6px 10px;font-size:12px;line-height:1.45;position:absolute;inset:auto 8px 34px}.demo-center{box-sizing:border-box;place-items:center;height:100%;padding:16px;display:grid}.demo-scroll{box-sizing:border-box;overscroll-behavior:contain;height:100%;overflow-y:auto;container-type:size}.demo-stack{justify-items:center;gap:12px;padding:0 16px 20px;display:grid}.demo-scroll-intro{box-sizing:border-box;color:#6b7280;place-items:center;min-height:100cqh;margin:0;font-size:12px;display:grid}.demo-card{box-sizing:border-box;background:#fff;border:1px solid #e3e5ea;border-radius:12px;width:min(220px,100%);padding:12px 14px;box-shadow:0 1px 2px #0000000f}.demo-card strong{margin-bottom:2px;font-size:14px;display:block}.demo-card p{color:#5b6270;margin:0}.demo-list{gap:8px;width:min(220px,100%);margin:0;padding:0;list-style:none;display:grid}.demo-list li{background:#fff;border:1px solid #e3e5ea;border-radius:10px;align-items:center;gap:10px;padding:8px 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div{grid-template-columns:84px 1fr}.field{grid-template-columns:104px minmax(0,1fr) 56px}.field-easing{grid-template-columns:104px minmax(0,1fr)}}