:root {
  --paper: #f3f5f8;
  --panel: #ffffff;
  --ink: #121a2b;
  --muted: #566074;
  --rule: #d8dee8;
  --signal: #2b59c3;
  --signal-ink: #ffffff;
  --busy: #15995a;
  --wait: #c27a12;
  --idle: #8a93a5;
  --opus: #6d4fe0;
  --sonnet: #2f6fd9;
  --haiku: #0f8a66;
  --code-bg: #e9edf3;
  --sans: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0f1522;
    --panel: #161e2e;
    --ink: #e7ecf4;
    --muted: #9aa6ba;
    --rule: #263247;
    --signal: #7fa2ff;
    --signal-ink: #0f1522;
    --busy: #4ade80;
    --wait: #fbbf24;
    --idle: #6b778c;
    --opus: #b69cff;
    --sonnet: #6aa9ff;
    --haiku: #4fd1a5;
    --code-bg: #1c2638;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 17px/1.6 var(--sans); }
a { color: var(--signal); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 4px; }
img { max-width: 100%; height: auto; display: block; }
code, pre, kbd { font-family: var(--mono); font-size: 0.86em; }
:not(pre) > code { background: var(--code-bg); padding: 0.12em 0.38em; border-radius: 5px; }
pre { background: var(--code-bg); padding: 14px 16px; border-radius: 8px; overflow-x: auto; line-height: 1.5; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* top bar */
.bar { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--rule); }
.bar .wrap { display: flex; align-items: center; gap: 28px; height: 60px; }
.mark { display: inline-flex; align-items: center; gap: 9px; font-weight: 700; font-size: 18px; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
.mark svg { width: 20px; height: 20px; }
.tabs { display: flex; gap: 4px; margin-left: auto; }
.tabs a { padding: 6px 12px; border-radius: 7px; color: var(--muted); text-decoration: none; font-size: 15px; }
.tabs a:hover { color: var(--ink); background: var(--code-bg); }
.tabs a[aria-current='page'] { color: var(--ink); font-weight: 600; }

/* hero */
.hero { padding-block: 72px 40px; }
.hero h1 { margin: 0; max-width: 15ch; font-size: clamp(38px, 6.4vw, 66px); line-height: 1.02; letter-spacing: -0.035em; font-weight: 750; }
.hero .lede { margin: 22px 0 0; max-width: 58ch; font-size: 19px; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; align-items: stretch; }
.install { display: inline-flex; align-items: center; gap: 12px; padding: 0 6px 0 16px; height: 48px; border-radius: 10px; background: var(--ink); color: var(--paper); font: 15px var(--mono); }
.install code { background: none; padding: 0; color: inherit; font-size: inherit; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.install button { height: 36px; padding: 0 12px; border: 0; border-radius: 7px; background: color-mix(in srgb, var(--paper) 16%, transparent); color: inherit; font: 600 13px var(--sans); cursor: pointer; }
.install button:hover { background: color-mix(in srgb, var(--paper) 26%, transparent); }
.ghost-btn { display: inline-flex; align-items: center; height: 48px; padding: 0 18px; border-radius: 10px; border: 1px solid var(--rule); color: var(--ink); text-decoration: none; font-weight: 600; font-size: 15px; background: var(--panel); }
.ghost-btn:hover { border-color: var(--muted); }
.fine { margin-top: 14px; font-size: 14px; color: var(--muted); }

/* the board */
.board { margin: 44px 0 0; border: 1px solid var(--rule); border-radius: 12px; background: var(--panel); overflow: hidden; font-family: var(--mono); font-size: 13.5px; }
.board-head, .row { display: grid; grid-template-columns: 22px minmax(110px, 1.1fr) 92px minmax(0, 2.6fr) 64px; gap: 14px; align-items: center; padding: 11px 18px; }
.board-head { color: var(--muted); font: 600 12.5px var(--sans); border-bottom: 1px solid var(--rule); }
.row + .row { border-top: 1px solid var(--rule); }
.row .name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row .now { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row .now b { color: var(--ink); font-weight: 600; }
.row .cost { text-align: right; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--idle); }
.dot.busy { background: var(--busy); box-shadow: 0 0 0 0 color-mix(in srgb, var(--busy) 50%, transparent); animation: pulse 2s infinite; }
.dot.wait { background: var(--wait); }
.model { justify-self: start; white-space: nowrap; padding: 1px 8px; border-radius: 6px; border: 1px solid currentColor; font: 600 12px var(--sans); }
.m-opus { color: var(--opus); }
.m-sonnet { color: var(--sonnet); }
.m-haiku { color: var(--haiku); }
.row.changed .now { animation: arrive 0.6s ease-out; }
@keyframes pulse { 70% { box-shadow: 0 0 0 7px transparent; } }
@keyframes arrive { from { opacity: 0; transform: translateY(5px); } }
@media (prefers-reduced-motion: reduce) {
  .dot.busy, .row.changed .now { animation: none; }
}
.board-foot { padding: 10px 18px; border-top: 1px solid var(--rule); color: var(--muted); font: 13px var(--sans); }

/* sections */
section.part { padding-block: 64px; border-top: 1px solid var(--rule); }
.part h2 { margin: 0 0 14px; font-size: clamp(26px, 3.4vw, 34px); letter-spacing: -0.02em; line-height: 1.15; }
.part p { max-width: 64ch; }
.feature { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 48px; align-items: center; }
.feature + .feature { margin-top: 72px; }
.feature.flip .text { order: 2; }
.feature h3 { margin: 0 0 10px; font-size: 24px; letter-spacing: -0.015em; }
.feature p { margin: 0 0 12px; color: var(--muted); }
.shot { border-radius: 12px; border: 1px solid var(--rule); background: var(--panel); padding: 6px; box-shadow: 0 30px 60px -30px color-mix(in srgb, var(--ink) 40%, transparent); }
.shot img { border-radius: 7px; }

.facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 40px; margin: 0; padding: 0; list-style: none; }
.facts li { padding: 18px 0; border-top: 2px solid var(--ink); }
.facts b { display: block; font-size: 19px; margin-bottom: 4px; }
.facts span { color: var(--muted); font-size: 15.5px; }

ol.steps { margin: 0; padding: 0; list-style: none; counter-reset: s; max-width: 720px; }
ol.steps li { counter-increment: s; position: relative; padding: 0 0 22px 46px; }
ol.steps li::before { content: counter(s); position: absolute; left: 0; top: 0; width: 30px; height: 30px; border-radius: 50%; border: 1.5px solid var(--ink); display: grid; place-items: center; font: 600 14px var(--sans); }
ol.steps pre { margin: 8px 0 0; }

footer { border-top: 1px solid var(--rule); padding: 32px 0 48px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
footer a { color: inherit; }

/* docs */
.docs { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 56px; padding-block: 48px 80px; }
.toc { position: sticky; top: 84px; align-self: start; max-height: calc(100vh - 100px); overflow-y: auto; font-size: 14.5px; }
.toc p { margin: 18px 0 6px; font-weight: 700; font-size: 13.5px; }
.toc p:first-child { margin-top: 0; }
.toc a { display: block; padding: 4px 0 4px 12px; border-left: 2px solid var(--rule); color: var(--muted); text-decoration: none; }
.toc a:hover { color: var(--ink); border-left-color: var(--muted); }
.toc a.on { color: var(--ink); border-left-color: var(--signal); font-weight: 600; }
.doc { max-width: 72ch; }
.doc h1 { margin: 0 0 8px; font-size: 40px; letter-spacing: -0.03em; line-height: 1.1; }
.doc h2 { margin: 56px 0 12px; font-size: 27px; letter-spacing: -0.02em; padding-top: 8px; }
.doc h3 { margin: 30px 0 8px; font-size: 19px; }
.doc .lede { color: var(--muted); font-size: 18.5px; margin-top: 0; }
.doc li { margin: 4px 0; }
.doc table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 16px 0; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 9px 10px; border-bottom: 1px solid var(--rule); }
.doc th { font-size: 13.5px; color: var(--muted); }
.doc .shot { margin: 20px 0; }
.note { border-left: 3px solid var(--signal); background: var(--panel); padding: 12px 16px; border-radius: 0 8px 8px 0; margin: 18px 0; font-size: 15.5px; }
.doc dt { font-weight: 700; margin-top: 18px; }
.doc dd { margin: 4px 0 0; color: var(--muted); }

/* changelog */
.release { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 32px; padding: 32px 0; border-top: 1px solid var(--rule); }
.release h2 { margin: 0; font-size: 26px; }
.release time { color: var(--muted); font-size: 14.5px; }
.release ul { margin: 0; padding-left: 20px; max-width: 70ch; }
.release li { margin: 8px 0; }

@media (max-width: 860px) {
  .feature, .feature.flip { grid-template-columns: 1fr; gap: 24px; }
  .feature.flip .text { order: 0; }
  .facts { grid-template-columns: 1fr; }
  .docs { grid-template-columns: 1fr; gap: 24px; padding-block-start: 24px; }
  .toc { position: static; max-height: none; border: 1px solid var(--rule); border-radius: 10px; padding: 14px 16px; }
  .release { grid-template-columns: 1fr; gap: 10px; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .bar .wrap { gap: 12px; }
  .tabs a { padding: 6px 8px; font-size: 14px; }
  .tabs .gh { display: none; }
  .hero { padding-block-start: 44px; }
  .install { font-size: 12.5px; padding-left: 12px; max-width: 100%; overflow: hidden; }
  .board-head, .row { grid-template-columns: 10px minmax(0, 1fr) auto 48px; gap: 10px; padding: 10px 12px; }
  .board-head .h-now, .row .now { display: none; }
  section.part { padding-block: 48px; }
}