:root {
  --bg: #ffffff;
  --bg-2: #fafaf9;
  --bg-3: #f2f2f0;
  --fg: #111110;
  --fg-2: #56564f;
  --fg-3: #90908a;
  --line: #eaeae6;
  --line-2: #d8d8d2;
  --accent: #111110;
  --accent-fg: #ffffff;
  --ok: #3a8a4f;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sidebar: 252px;
  --measure: 660px;
  --wide: 940px;
  --gap: clamp(40px, 4.4vw, 56px);
  --s1: 6px; --s2: 12px; --s3: 18px; --s4: 26px; --s5: 36px; --s6: 52px;
  --ease: cubic-bezier(.22,.7,.25,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
  --spring: cubic-bezier(.34,1.35,.5,1);
  --ease-in-out: cubic-bezier(.645,.045,.355,1);
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #0c0c0b; --bg-2: #141413; --bg-3: #1c1c1a;
  --fg: #f4f4f2; --fg-2: #a8a8a2; --fg-3: #6e6e68;
  --line: #212120; --line-2: #313130;
  --accent: #f4f4f2; --accent-fg: #0c0c0b;
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c0c0b; --bg-2: #141413; --bg-3: #1c1c1a;
    --fg: #f4f4f2; --fg-2: #a8a8a2; --fg-3: #6e6e68;
    --line: #212120; --line-2: #313130;
    --accent: #f4f4f2; --accent-fg: #0c0c0b;
    color-scheme: dark;
  }
}

@view-transition { navigation: auto; }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; animation: none !important; } }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: var(--sans); font-size: 16.5px; line-height: 1.68;
  font-feature-settings: "cv11", "calt", "liga"; font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
p a, .prose a, .plain a { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; text-decoration-color: var(--line-2); transition: text-decoration-color .15s; }
p a:hover, .prose a:hover, .plain a:hover { text-decoration-color: var(--fg); }
img, svg { max-width: 100%; }
h1, h2, h3, h4 { font-weight: 500; letter-spacing: -0.021em; line-height: 1.18; margin: 0 0 .38em; text-wrap: balance; }
h1 { font-size: clamp(2.15rem, 3.9vw, 2.95rem); letter-spacing: -0.032em; line-height: 1.1; }
h2 { font-size: 1.42rem; letter-spacing: -0.024em; }
h3 { font-size: 1.02rem; letter-spacing: -0.012em; }
p { margin: 0 0 1.1em; text-wrap: pretty; }
ul, ol { margin: 0 0 1.1em; }
.mono { font-family: var(--mono); font-size: .78em; }
.muted { color: var(--fg-3); }
.small { font-size: .92rem; }
.eyebrow { font-size: .88rem; color: var(--fg-3); margin-bottom: .5rem; }
.eyebrow a:hover { color: var(--fg); }
.lede { font-size: 1.18rem; line-height: 1.62; color: var(--fg-2); max-width: 33em; letter-spacing: -0.005em; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--fg); color: var(--bg); padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; }
.arrow { display: inline-block; transition: transform .18s ease; }
a:hover .arrow { transform: translateX(3px); }
hr { border: 0; border-top: 1px solid var(--line); margin: var(--gap) 0; }

/* ---------- shell ---------- */
.shell { display: grid; grid-template-columns: var(--sidebar) 1fr; min-height: 100vh; }
.sidebar {
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
  padding: 36px 28px 28px; display: flex; flex-direction: column; gap: var(--s4); background: var(--bg);
}
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 500; font-size: 1.06rem; letter-spacing: -0.015em; }
.logo-mark { display: inline-flex; height: 32px; flex: none; }
.logo-mark img { height: 100%; width: auto; display: block; }
.logo-mark .lg-d { display: none; }
:root[data-theme="dark"] .logo-mark .lg-l { display: none; }
:root[data-theme="dark"] .logo-mark .lg-d { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .logo-mark .lg-l { display: none; }
  :root:not([data-theme="light"]) .logo-mark .lg-d { display: block; }
}
.sidebar nav ul { list-style: none; margin: 0; padding: 0; }
.nav > li > a { display: block; padding: 6px 0; color: var(--fg-3); font-size: .97rem; transition: color .15s; }
.nav > li > a:hover { color: var(--fg); }
.nav > li > a[aria-current] { color: var(--fg); }
.subnav { margin: 0; padding: 0; }
.subnav a { display: block; padding: 4px 0; font-size: .9rem; color: var(--fg-3); transition: color .15s; }
.subnav a:hover { color: var(--fg-2); }
.subnav a.active { color: var(--fg); }
.on-page { padding-top: var(--s4); border-top: 1px solid var(--line); }
.on-page-title { font-size: .8rem; color: var(--fg-3); margin: 0 0 var(--s2); }
.on-page .subnav { margin: 0 !important; padding-left: 0 !important; border-left: 0; }
.nav-here { font-style: normal; }
.sidebar-cta { margin: 0; }
.sidebar-foot { margin-top: auto; display: flex; flex-wrap: wrap; gap: 4px 16px; }
.ghost-btn { appearance: none; background: none; border: 0; padding: 2px 0; color: var(--fg-3); font: inherit; font-size: .88rem; cursor: pointer; }
.ghost-btn:hover { color: var(--fg); }
.ghost-btn kbd { font-family: var(--mono); font-size: .78em; color: var(--fg-3); margin-left: 3px; }
.topbar { display: none; }

.content { min-width: 0; padding: 68px 56px 40px; counter-reset: sec; }
.content > section:not(.hero):not(.cta-box) { counter-increment: sec; }
.content > section:not(.hero):not(.cta-box)::before {
  content: counter(sec, decimal-leading-zero);
  display: block; font-family: var(--mono); font-size: .7rem; letter-spacing: .1em;
  line-height: 1; color: var(--fg-3); margin-bottom: 12px;
}
.content > * { max-width: var(--measure); margin-inline: auto; }
body.wide .content > * { max-width: var(--wide); }
.content > section { padding-block: var(--gap); }
.content > section + section { border-top: 1px solid var(--line); }
.content > section:first-child { padding-top: 0; }
.hero h1 { margin-bottom: .3em; }
.hero.center { text-align: center; }
.hero.center .lede { margin-inline: auto; }
.hero.center .logo-mark { height: 92px; margin-bottom: var(--s4); }
.pill { display: inline-flex; align-items: center; gap: 9px; font-size: .9rem; color: var(--fg-3); margin-bottom: 24px; }
.pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--ok); flex: none; }
.pill a { color: var(--fg); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--line-2); }
.pill a:hover { text-decoration-color: var(--fg); }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 42px; padding: 0 20px; border: 1px solid var(--line-2); border-radius: 3px; font-size: .95rem; font-weight: 500; letter-spacing: -0.006em; color: var(--fg); background: none; cursor: pointer; }
.btn:hover { border-color: var(--fg); }
.btn.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.btn.primary:hover { opacity: .88; }
.btn.small { min-height: 34px; padding: 0 14px; font-size: .9rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; margin: var(--s5) 0 0; }
.text-link { font-weight: 500; display: inline-flex; gap: 6px; align-items: center; }

.mt { margin-top: var(--s5); }
.mt-lg { margin-top: var(--s6); }

/* ---------- content blocks ---------- */
.stack { margin-top: var(--s4); }
.stack > * + * { margin-top: var(--s4); }
.feature h3 { margin-bottom: .25em; }
.feature p { color: var(--fg-2); margin: 0; }
.cols { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--s5) 40px; margin-top: var(--s4); }
.cols-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s5) 36px; margin-top: var(--s4); }
.block h3 { margin-bottom: .3em; }
.block p { color: var(--fg-2); margin: 0; font-size: .96rem; }
.label + p { margin-top: var(--s1) !important; }
.label { font-size: .84rem; color: var(--fg-3); margin-bottom: 4px; }
.stat { display: flex; flex-direction: column; }
.stat .n { font-size: 2.35rem; font-weight: 500; letter-spacing: -0.035em; line-height: 1.1; }
.stat .n small { font-size: .45em; color: var(--fg-2); letter-spacing: 0; margin-left: 2px; }
.stat p { font-size: .92rem; color: var(--fg-3); margin: 6px 0 0; }
.rows { list-style: none; margin: var(--s4) 0 0; padding: 0; }
.rows li { border-top: 1px solid var(--line); }
.rows li:last-child { border-bottom: 1px solid var(--line); }
.rows a { display: flex; align-items: baseline; gap: 16px; padding: 15px 0; }
.rows a:hover .t { text-decoration: underline; text-underline-offset: 3px; }
.rows .t { flex: 1; }
.rows .m { color: var(--fg-3); font-size: .88rem; white-space: nowrap; }
blockquote.quote { margin: var(--s6) 0 0; padding: 0; font-size: 1.16rem; color: var(--fg); max-width: 30em; }
blockquote.quote p { margin-bottom: .5em; }
blockquote.quote cite { font-style: normal; color: var(--fg-3); font-size: .9rem; }
.diagram { font-family: var(--mono); font-size: .76rem; line-height: 1.55; white-space: pre; overflow-x: auto; color: var(--fg-3); margin: 26px 0; padding-bottom: 6px; }
.diagram b { color: var(--fg); font-weight: 400; }
.diagram i { font-style: normal; }
.logos { display: flex; flex-wrap: wrap; gap: 6px 22px; color: var(--fg-3); font-size: .92rem; margin-top: var(--s5); }
.table-wrap { overflow-x: auto; margin: var(--s4) 0 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
table { width: 100%; border-collapse: collapse; font-size: .95rem; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 12px 20px 12px 0; vertical-align: top; border-bottom: 1px solid var(--line); }
thead th { font-size: .84rem; color: var(--fg-3); font-weight: 400; }
tbody th { font-weight: 500; }
td { color: var(--fg-2); }
.tag { display: inline-block; font-size: .82rem; color: var(--fg-3); margin-right: 12px; }
.tags { display: flex; flex-wrap: wrap; }

/* ---------- steps ---------- */
.steps { counter-reset: s; list-style: none; margin: var(--s4) 0 0; padding: 0; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 30px 1fr; gap: 0 14px; padding-bottom: 26px; }
.steps li::before { content: counter(s, decimal-leading-zero); grid-column: 1; grid-row: 1; font-family: var(--mono); font-size: .76rem; color: var(--fg-3); padding-top: 5px; }
.steps li > * { grid-column: 2; }
.steps li:last-child { padding-bottom: 0; }
.steps h3 { margin-bottom: .25em; }
.steps p { color: var(--fg-2); margin: 0; }

/* ---------- filters ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 2px 20px; margin-bottom: 8px; }
.chip { appearance: none; background: none; border: 0; padding: 4px 0; font: inherit; font-size: .93rem; color: var(--fg-3); cursor: pointer; }
.chip:hover { color: var(--fg-2); }
.chip.active { color: var(--fg); }
[data-filter-list] > [hidden] { display: none !important; }

/* ---------- blog ---------- */
.post-list { list-style: none; margin: var(--s4) 0 0; padding: 0; }
.post-row { border-top: 1px solid var(--line); }
.post-row:last-child { border-bottom: 1px solid var(--line); }
.post-row a { display: block; padding: 22px 0; }
.post-row a:hover .post-title { text-decoration: underline; text-underline-offset: 4px; }
.post-title { font-size: 1.12rem; font-weight: 500; letter-spacing: -0.015em; display: block; margin-bottom: 3px; }
.post-excerpt { color: var(--fg-2); display: block; font-size: .96rem; }
.post-meta { color: var(--fg-3); font-size: .86rem; display: block; margin-bottom: 6px; }
.post h1 { margin-bottom: .35em; }
.byline { display: flex; align-items: center; gap: 10px; margin: var(--s5) 0 0; padding-bottom: var(--s5); border-bottom: 1px solid var(--line); font-size: .93rem; color: var(--fg-2); }
.post .prose { margin-top: var(--s5); }
.avatar { width: 26px; height: 26px; border-radius: 50%; background: var(--bg-3); color: var(--fg-2); display: inline-grid; place-items: center; font-size: .68rem; font-weight: 500; flex: none; }
.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: var(--gap); padding-top: 26px; border-top: 1px solid var(--line); }
.post-nav a { display: block; }
.post-nav a:hover span:last-child { text-decoration: underline; text-underline-offset: 3px; }
.post-nav span:first-child { display: block; color: var(--fg-3); font-size: .86rem; margin-bottom: 3px; }
.post-nav span:last-child { font-weight: 500; }
.post-nav .right { text-align: right; }
.cta-box { margin-top: var(--gap); }
.cta-box h2 { font-size: 1.2rem; }
.inline-form { display: flex; gap: 8px; flex-wrap: wrap; margin: 14px 0 8px; max-width: 26em; }
.inline-form input { flex: 1; min-width: 190px; }
input, textarea, select { font: inherit; font-size: .95rem; padding: 10px 12px; border: 1px solid var(--line-2); border-radius: 2px; background: var(--bg); color: var(--fg); width: 100%; }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--fg); }
label { display: block; font-size: .9rem; margin-bottom: 5px; }
.field { margin-bottom: 16px; }

/* ---------- prose ---------- */
.prose { color: var(--fg-2); }
.prose > *:first-child { margin-top: 0; }
.prose h2, .prose h3 { color: var(--fg); margin-top: 1.7em; }
.prose h2 { font-size: 1.3rem; }
.prose h3 { font-size: 1.05rem; }
.prose ul, .prose ol { padding-left: 1.15em; }
.prose li { margin: .3em 0; }
.prose li::marker { color: var(--fg-3); }
.prose strong { color: var(--fg); font-weight: 500; }
.prose blockquote { margin: 1.6em 0; padding-left: 20px; border-left: 1px solid var(--line-2); color: var(--fg); }
code { font-family: var(--mono); font-size: .86em; color: var(--fg); }
:not(pre) > code { background: var(--bg-3); padding: 1px 5px; border-radius: 2px; }
pre.code { position: relative; background: var(--bg-2); border: 1px solid var(--line); border-radius: 2px; padding: 18px 20px; overflow-x: auto; margin: 1.5em 0; font-size: .82rem; line-height: 1.6; }
pre.code code { color: var(--fg-2); }
.copy { position: absolute; top: 7px; right: 8px; appearance: none; border: 0; background: none; color: var(--fg-3); font-size: .78rem; padding: 3px 6px; cursor: pointer; opacity: 0; transition: opacity .15s; }
pre.code:hover .copy, .copy:focus-visible { opacity: 1; }
.copy:hover { color: var(--fg); }
.copy.done { color: var(--ok); opacity: 1; }

/* ---------- changelog ---------- */
.entry { padding-block: var(--gap); }
.entry + .entry { border-top: 1px solid var(--line); }
.entry-meta { display: flex; align-items: center; gap: 14px; color: var(--fg-3); font-size: .86rem; margin-bottom: 8px; }
.entry h2 { font-size: 1.3rem; }

/* ---------- pricing ---------- */
.plan { display: grid; grid-template-columns: 1fr 1.25fr auto; gap: 20px 40px; padding-block: var(--s6); align-items: start; }
.plan + .plan { border-top: 1px solid var(--line); }
.plan-id h3 { font-size: 1.24rem; margin: 0 0 var(--s1); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.plan-tag { font-size: .7rem; font-weight: 400; letter-spacing: .04em; text-transform: uppercase; color: var(--fg-3); border: 1px solid var(--line-2); border-radius: 20px; padding: 2px 9px; }
.plan .sub { color: var(--fg-2); margin: 0; font-size: .96rem; }
.plan .label { margin-bottom: var(--s2); }
.plan-feats ul { list-style: none; margin: 0; padding: 0; color: var(--fg-2); font-size: .95rem; }
.plan-feats li { position: relative; padding: 3px 0 3px 18px; }
.plan-feats li::before { content: ""; position: absolute; left: 0; top: .95em; width: 7px; height: 1px; background: var(--line-2); }
.plan-buy { display: flex; flex-direction: column; align-items: flex-start; gap: var(--s4); min-width: 168px; }
.plan-price { font-size: 1.95rem; font-weight: 500; letter-spacing: -0.035em; line-height: 1; white-space: nowrap; font-variant-numeric: tabular-nums; }
.plan-price small { font-size: .38em; color: var(--fg-3); font-weight: 400; letter-spacing: 0; margin-left: 2px; }
.plan-buy .btn { width: 100%; }
.toggle { display: inline-flex; align-items: center; gap: 10px; font-size: .9rem; color: var(--fg-3); cursor: pointer; user-select: none; }
.toggle .sw { width: 38px; height: 21px; border-radius: 11px; border: 1px solid var(--line-2); position: relative; flex: none; }
.toggle .sw::after { content: ""; position: absolute; top: 3px; left: 3px; width: 13px; height: 13px; border-radius: 50%; background: var(--fg-3); transition: transform .18s var(--ease), background .18s; }
.toggle[aria-checked="true"] .sw { border-color: var(--fg); }
.toggle[aria-checked="true"] .sw::after { transform: translateX(17px); background: var(--fg); }
.toggle[aria-checked="true"] .on, .toggle[aria-checked="false"] .off { color: var(--fg); }
@media (max-width: 900px) {
  .plan { grid-template-columns: 1fr 1fr; }
  .plan-buy { grid-column: 1 / -1; flex-direction: row; align-items: center; justify-content: space-between; width: 100%; }
  .plan-buy .btn { width: auto; }
}
@media (max-width: 620px) {
  .plan { grid-template-columns: 1fr; gap: var(--s4); }
  .plan-buy { flex-direction: column; align-items: flex-start; gap: var(--s3); }
}

/* ---------- faq ---------- */
.faq { margin-top: var(--s4); }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 16px 0; font-size: 1rem; font-weight: 500; display: flex; justify-content: space-between; gap: 20px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--fg-3); font-weight: 400; flex: none; }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--fg-2); margin: -4px 0 16px; max-width: 58ch; font-size: .96rem; }

/* ---------- demo ---------- */
.demo-switch { display: flex; justify-content: center; margin: var(--s5) 0 var(--s3); }
.demo { border: 1px solid var(--line); border-radius: 3px; overflow: hidden; }
.demo-head { display: flex; justify-content: space-between; padding: 9px 14px; border-bottom: 1px solid var(--line); font-size: .82rem; color: var(--fg-3); }
.demo-body { padding: 18px 14px; display: flex; flex-direction: column; gap: 9px; min-height: 190px; }
.msg { max-width: 84%; padding: 9px 13px; border-radius: 3px; font-size: .94rem; line-height: 1.5; }
.msg.you { align-self: flex-end; background: var(--accent); color: var(--accent-fg); }
.msg.bot { align-self: flex-start; background: var(--bg-2); color: var(--fg-2); }
.msg.mem { align-self: flex-start; font-size: .8rem; color: var(--fg-3); border: 1px dashed var(--line-2); margin-bottom: 9px; }
.demo [data-on], .demo [data-off] { display: none; }
.demo.on [data-on] { display: contents; }
.demo:not(.on) [data-off] { display: contents; }
.demo-body .msg { animation: msg-in .3s ease both; }
@keyframes msg-in { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }
.demo-foot { padding: 9px 14px; border-top: 1px solid var(--line); font-size: .82rem; color: var(--fg-3); }

/* ---------- benchmarks ---------- */
.bench { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; margin-top: var(--s4); }
.chart { display: flex; align-items: flex-end; gap: 10px; height: 120px; border-bottom: 1px solid var(--line-2); }
.bar { flex: 1; position: relative; }
.bar span { position: absolute; top: -20px; left: 0; right: 0; text-align: center; font-size: .8rem; color: var(--fg-3); }
.bar.us { background: var(--fg); }
.bar.us span { color: var(--fg); }
.bar.them { background: var(--bg-3); border: 1px solid var(--line); border-bottom: 0; }
.bench h4 { margin: 12px 0 2px; font-size: .96rem; font-weight: 500; }
.bench small { color: var(--fg-3); font-size: .84rem; }
.legend { display: flex; flex-wrap: wrap; gap: 8px 22px; font-size: .88rem; color: var(--fg-3); margin-top: 22px; }
.legend i { display: inline-block; width: 9px; height: 9px; margin-right: 7px; background: var(--fg); }
.legend i.them { background: var(--bg-3); border: 1px solid var(--line); }

/* ---------- product index ---------- */
.products { margin-top: var(--s4); }
.products a { display: grid; grid-template-columns: 1fr 1.1fr; gap: 8px 36px; padding: 26px 0; border-top: 1px solid var(--line); align-items: baseline; }
.products a:last-child { border-bottom: 1px solid var(--line); }
.products h3 { font-size: 1.5rem; margin: 0; letter-spacing: -0.025em; }
.products a:hover h3 { text-decoration: underline; text-underline-offset: 4px; }
.products p { color: var(--fg-2); margin: 0 0 6px; font-size: .96rem; }

/* ---------- values ---------- */
.values { margin-top: var(--s4); }
.values dt { font-weight: 500; margin-top: 22px; }
.values dt:first-of-type { margin-top: 0; }
.values dd { margin: 3px 0 0; color: var(--fg-2); }

/* ---------- footer ---------- */
.footer { margin-top: var(--gap); padding-top: var(--s6); border-top: 1px solid var(--line); font-size: .9rem; color: var(--fg-3); }
.footer-cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px 40px; margin-bottom: var(--s6); }
.footer-title { color: var(--fg); font-size: .88rem; font-weight: 500; margin: 0 0 var(--s2); }
.footer-cols ul { list-style: none; margin: 0; padding: 0; }
.footer-cols li { padding: 3px 0; }
.footer a:hover { color: var(--fg); }
.footer .base { display: flex; flex-wrap: wrap; gap: 6px 20px; justify-content: space-between; padding-top: var(--s4); border-top: 1px solid var(--line); }

/* ---------- reveal + progress ---------- */
.reveal { opacity: 0; transform: translateY(10px); transition: opacity .45s ease, transform .45s ease; }
.reveal.shown { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1 !important; transform: none !important; } }
.progress { position: fixed; top: 0; left: 0; right: 0; height: 2px; background: var(--fg); transform: scaleX(0); transform-origin: 0 50%; z-index: 55; }

/* ---------- search ---------- */
.search { position: fixed; inset: 0; z-index: 60; }
.search-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.3); }
.search-panel { position: relative; max-width: 560px; margin: 14vh auto 0; background: var(--bg); border: 1px solid var(--line-2); border-radius: 4px; box-shadow: 0 24px 60px rgba(0,0,0,.16); overflow: hidden; }
.search-panel input { border: 0; border-bottom: 1px solid var(--line); border-radius: 0; padding: 15px 18px; font-size: 1rem; }
.search-panel input:focus { border-color: var(--line); }
.search-results { list-style: none; margin: 0; padding: 6px 0; max-height: 46vh; overflow-y: auto; }
.search-results li a { display: block; padding: 9px 18px; }
.search-results li a .kind { float: right; color: var(--fg-3); font-size: .82rem; }
.search-results li a small { display: block; color: var(--fg-3); font-size: .84rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.search-results li.active a, .search-results li a:hover { background: var(--bg-2); }
.search-results .empty { padding: 14px 18px; color: var(--fg-3); font-size: .93rem; }
.search-hint { padding: 9px 18px; border-top: 1px solid var(--line); color: var(--fg-3); font-size: .8rem; }

:focus-visible { outline: 2px solid var(--fg); outline-offset: 3px; border-radius: 3px; }
.sidebar { scrollbar-width: thin; scrollbar-color: var(--line-2) transparent; }
.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 3px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) { .content { padding: 60px 40px 36px; } }
@media (max-width: 900px) {
  html { scroll-padding-top: 70px; }
  .shell { grid-template-columns: 1fr; }
  .topbar { display: flex; position: sticky; top: 0; z-index: 50; align-items: center; justify-content: space-between; padding: 11px 18px; border-bottom: 1px solid var(--line); background: var(--bg); }
  .topbar-actions { display: flex; gap: 6px; }
  .icon-btn { appearance: none; background: none; border: 0; color: var(--fg-2); font: inherit; font-size: .85rem; padding: 6px 8px; cursor: pointer; display: inline-flex; flex-direction: column; justify-content: center; gap: 4px; min-height: 34px; }
  [data-menu] span { display: block; width: 16px; height: 1.5px; background: currentColor; transition: transform .2s; }
  [data-menu][aria-expanded="true"] span:first-child { transform: translateY(2.75px) rotate(45deg); }
  [data-menu][aria-expanded="true"] span:last-child { transform: translateY(-2.75px) rotate(-45deg); }
  .sidebar { position: fixed; top: 57px; left: 0; right: 0; bottom: 0; height: auto; z-index: 40; padding: 22px 18px; transform: translateX(-100%); transition: transform .22s ease; }
  .sidebar.open { transform: none; }
  .sidebar > .brand { display: none; }
  .content { padding: 36px 18px 28px; }
  .cols-3, .bench { grid-template-columns: 1fr 1fr; }
  .products a { grid-template-columns: 1fr; }
}
@media (max-width: 700px) { .footer-cols { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) {
  body { font-size: 16px; }
  .cols, .cols-3, .bench { grid-template-columns: 1fr; }
  .post-nav { grid-template-columns: 1fr; }
  .post-nav .right { text-align: left; }
  .plan-head { flex-direction: column; gap: 2px; }
  .search-panel { margin: 0; height: 100%; max-width: none; border: 0; border-radius: 0; }
  .search-results { max-height: calc(100vh - 110px); }
  .copy { opacity: 1; }
  pre.code { padding-top: 30px; }
}

/* ==================================================================
   MOTION + INTERACTION
   ================================================================== */

/* ---------- staggered reveal ---------- */
.reveal-item { opacity: 0; transform: translateY(12px); }
.shown .reveal-item, .reveal-item.shown { opacity: 1; transform: none;
  transition: opacity .55s var(--ease), transform .55s var(--ease); }
.shown .reveal-item:nth-child(1) { transition-delay: .04s; }
.shown .reveal-item:nth-child(2) { transition-delay: .12s; }
.shown .reveal-item:nth-child(3) { transition-delay: .2s; }
.shown .reveal-item:nth-child(4) { transition-delay: .28s; }
.shown .reveal-item:nth-child(5) { transition-delay: .36s; }
@media (prefers-reduced-motion: reduce) { .reveal-item { opacity: 1 !important; transform: none !important; } }

/* ---------- logo ---------- */
.brand .logo-mark { transition: transform .18s ease; }
.brand:hover .logo-mark { transform: translateY(-1.5px); }

/* ---------- buttons and links ---------- */
.btn { position: relative; overflow: hidden; transition: border-color .18s, background .18s, color .18s, transform .12s var(--spring); }
.btn:active { transform: scale(.975); }
.btn.primary::after {
  content: ""; position: absolute; inset: 0; background: var(--bg);
  opacity: 0; transition: opacity .2s;
}
.btn.primary:hover { opacity: 1; }
.btn.primary:hover::after { opacity: .12; }
.text-link { position: relative; }
.text-link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: 0 50%;
  transition: transform .32s var(--ease);
}
.text-link:hover::after { transform: scaleX(1); }
.nav > li > a, .subnav a { position: relative; }
.dot {
  position: absolute; left: -16px; top: 50%; width: 6px; height: 6px; margin-top: -3px;
  border-radius: 50%; background: var(--fg);
}
.rows a, .post-row a, .products a { transition: transform .25s var(--ease); }
.rows a:hover, .post-row a:hover, .products a:hover { transform: translateX(5px); }

/* ---------- hero graph ---------- */
.graph-wrap { margin-top: var(--s5); position: relative; padding: 22px 20px 16px; background: var(--bg-2); border-radius: 4px; }
.graph { width: 100%; height: auto; display: block; overflow: visible; }
.graph .edge { fill: none; stroke: var(--line-2); stroke-width: 1.2; stroke-dasharray: var(--len); stroke-dashoffset: var(--len); }
.graph.run .edge { animation: draw .9s cubic-bezier(.4,.5,.2,1) forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.graph .node { fill: var(--fg); opacity: 0; transform-origin: center; transform-box: fill-box; }
.graph.run .node { animation: pop .5s var(--spring) forwards; }
@keyframes pop { 0% { opacity: 0; transform: scale(0); } 100% { opacity: 1; transform: scale(1); } }
.graph .halo { fill: var(--fg); opacity: 0; transform-origin: center; transform-box: fill-box; }
.graph.run .halo { animation: halo 3.4s ease-out infinite; }
@keyframes halo { 0% { opacity: .16; transform: scale(1); } 70%, 100% { opacity: 0; transform: scale(2.6); } }
.graph .lbl { font-family: var(--mono); font-size: 10px; fill: var(--fg-3); opacity: 0;
  paint-order: stroke; stroke: var(--bg-2); stroke-width: 5px; stroke-linejoin: round; }
.graph.run .lbl { animation: fadein .6s ease forwards; }
@keyframes fadein { to { opacity: 1; } }
.graph .layer { transition: transform .5s var(--ease); }
.graph-caption { display: flex; justify-content: space-between; gap: 12px; margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); font-size: .82rem; color: var(--fg-3); }
@media (prefers-reduced-motion: reduce) {
  .graph .edge { stroke-dashoffset: 0; } .graph .node, .graph .lbl { opacity: 1; } .graph .halo { opacity: 0; }
}

/* ---------- live extraction ---------- */
.extract { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: var(--s5); align-items: start; }
.extract-src { font-size: 1.1rem; line-height: 1.8; color: var(--fg-2); }
.extract-src mark {
  background: none; color: var(--fg-2); border-radius: 2px; padding: 1px 2px; margin: -1px -2px;
  box-shadow: inset 0 0 0 0 var(--bg-3); transition: box-shadow .4s ease, color .4s ease;
}
.extract-src mark.lit { color: var(--fg); box-shadow: inset 0 -0.62em 0 0 var(--bg-3); }
.extract-out { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.extract-out li {
  border: 1px solid var(--line); border-radius: 3px; padding: 9px 12px; font-size: .9rem;
  opacity: 0; transform: translateY(10px) scale(.97); background: var(--bg);
  transition: opacity .45s var(--ease), transform .45s var(--ease);
}
.extract-out li.in { opacity: 1; transform: none; }
.extract-out .f { display: block; color: var(--fg); }
.extract-out .d { display: block; font-family: var(--mono); font-size: .72rem; color: var(--fg-3); margin-top: 3px; }
.extract-out .d.sup { color: var(--ok); }
.extract-head { display: flex; justify-content: space-between; align-items: baseline; font-size: .82rem; color: var(--fg-3); margin-bottom: 12px; height: 20px; }
.extract-count { font-family: var(--mono); }
.replay { appearance: none; background: none; border: 0; padding: 0; font: inherit; font-size: .88rem; color: var(--fg-3); cursor: pointer; display: inline-flex; align-items: center; gap: 6px; }
.replay:hover { color: var(--fg); }
.replay svg { width: 13px; height: 13px; transition: transform .5s var(--ease); }
.replay:hover svg { transform: rotate(-180deg); }
@media (max-width: 700px) { .extract { grid-template-columns: 1fr; gap: 22px; } }

/* ---------- recall playground ---------- */
.ask { margin-top: var(--s4); }
.ask-bar { display: flex; gap: 8px; }
.ask-bar input { flex: 1; }
.ask-chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 10px; }
.ask-chip {
  appearance: none; border: 1px solid var(--line); background: none; color: var(--fg-3);
  font: inherit; font-size: .85rem; padding: 4px 10px; border-radius: 20px; cursor: pointer;
  transition: border-color .18s, color .18s, transform .18s var(--spring);
}
.ask-chip:hover { border-color: var(--fg); color: var(--fg); transform: translateY(-1px); }
.stages { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 22px; }
.stage { border-top: 2px solid var(--line); padding-top: 9px; opacity: .45; transition: opacity .3s, border-color .3s; }
.stage.on { opacity: 1; border-color: var(--fg); }
.stage .sn { display: block; font-size: .88rem; font-weight: 500; }
.stage .sm { display: block; font-family: var(--mono); font-size: .72rem; color: var(--fg-3); margin-top: 2px; }
.stage .sc { display: block; font-family: var(--mono); font-size: .72rem; color: var(--fg-3); }
.ask-results { list-style: none; margin: 22px 0 0; padding: 0; }
.ask-results li {
  display: flex; align-items: baseline; gap: 14px; padding: 11px 0; border-top: 1px solid var(--line);
  opacity: 0; transform: translateY(8px); transition: opacity .4s ease, transform .4s var(--ease);
}
.ask-results li.in { opacity: 1; transform: none; }
.ask-results li:last-child { border-bottom: 1px solid var(--line); }
.ask-results .fact { flex: 1; }
.ask-results .score { font-family: var(--mono); font-size: .78rem; color: var(--fg-3); }
.ask-results .when { font-family: var(--mono); font-size: .78rem; color: var(--fg-3); white-space: nowrap; }
.ask-empty { padding: 14px 0; color: var(--fg-3); font-size: .93rem; }
.ask-foot { font-family: var(--mono); font-size: .76rem; color: var(--fg-3); margin-top: 14px; min-height: 1.2em; }
@media (max-width: 620px) { .stages { grid-template-columns: repeat(2, 1fr); } }

/* ---------- chat demo typing ---------- */
.msg.typing { color: transparent; position: relative; }
.dots { display: inline-flex; gap: 3px; }
.dots i { width: 4px; height: 4px; border-radius: 50%; background: var(--fg-3); animation: bounce 1.1s ease-in-out infinite; }
.dots i:nth-child(2) { animation-delay: .14s; }
.dots i:nth-child(3) { animation-delay: .28s; }
@keyframes bounce { 0%, 60%, 100% { transform: translateY(0); opacity: .5; } 30% { transform: translateY(-3px); opacity: 1; } }
.demo .msg { will-change: opacity, transform; }

/* ---------- counters ---------- */
.stat .n { font-variant-numeric: tabular-nums; }

/* ---------- benchmark bars ---------- */
.bar { transform-origin: 50% 100%; }
.bench.run .bar { animation: grow .85s cubic-bezier(.22,.8,.28,1) both; }
.bench.run .bar:nth-child(2) { animation-delay: .1s; }
.bench.run div:nth-child(2) .bar { animation-delay: .08s; }
.bench.run div:nth-child(3) .bar { animation-delay: .16s; }
.bench.run div:nth-child(4) .bar { animation-delay: .24s; }
@keyframes grow { from { transform: scaleY(0); } to { transform: scaleY(1); } }
.bar span { opacity: 0; animation: none; }
.bench.run .bar span { animation: fadein .5s ease .55s forwards; }
@media (prefers-reduced-motion: reduce) { .bar span { opacity: 1; } }

/* ---------- faq accordion ---------- */
.faq details { overflow: hidden; }
.faq .acc { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .34s var(--ease); }
.faq details[open] .acc { grid-template-rows: 1fr; }
.faq .acc > div { overflow: hidden; }
.faq summary::after { transition: transform .3s cubic-bezier(.34,1.3,.5,1); }
.faq details[open] summary::after { transform: rotate(180deg); }

/* ---------- scroll-linked steps ---------- */
.steps li { position: relative; }
.steps li::after {
  content: ""; position: absolute; left: 9px; top: 26px; bottom: 4px; width: 1px;
  background: var(--line); transform: scaleY(var(--p, 0)); transform-origin: 50% 0;
  transition: transform .3s linear;
}
.steps li:last-child::after { display: none; }
.steps li.lit::before { color: var(--fg); }

/* ---------- misc polish ---------- */
.pill::before { animation: blink 2.6s ease-in-out infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }
.demo-switch .toggle:active .sw { transform: scale(.96); }
.toggle .sw { transition: border-color .2s, transform .12s; }
.search-panel { animation: panel .22s cubic-bezier(.22,.9,.3,1) both; }
@keyframes panel { from { opacity: 0; transform: translateY(-8px) scale(.985); } to { opacity: 1; transform: none; } }
.search-backdrop { animation: fadein .2s ease both; }
::selection { background: var(--fg); color: var(--bg); }

@media (prefers-reduced-motion: reduce) {
  .extract-out li, .ask-results li { opacity: 1 !important; transform: none !important; }
  .extract-src mark { color: var(--fg); box-shadow: inset 0 -0.62em 0 0 var(--bg-3); }
}

/* ==================================================================
   PAGE TRANSITIONS
   The new page is shown immediately: the root snapshots cross over in
   zero time, so content never waits. Only the "you are here" circle
   keeps animating, gliding to its new row over the live page.
   ================================================================== */
@media (prefers-reduced-motion: no-preference) {
  .dot { view-transition-name: nav-dot; }

  ::view-transition-old(root), ::view-transition-new(root) { animation-duration: 0s; }

  /* An element already on screen that moves: ease-in-out. */
  ::view-transition-group(nav-dot) { animation-duration: 220ms; animation-timing-function: var(--ease-in-out); }
  ::view-transition-old(nav-dot), ::view-transition-new(nav-dot) { animation: none; }
}

@media (prefers-reduced-motion: reduce) {
  ::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation: none !important; }
}