/* Lead Green site styles. One file, no build step. */
:root {
  color-scheme: light;
  --bg: #F7F5F0;
  --surface: #FDFCFA;
  --ink: #1E1C19;
  --ink-2: #4B4843;
  --muted: #706C65;
  --rule: #DEDAD2;
  --rule-soft: #EBE8E2;
  --accent: #1F6B47;
  --accent-ink: #145236;
  --accent-soft: #E1F0E7;
  --bar: #2E8B5E;
  --chip: #EEEBE5;
  --code-bg: #F1EEE8;
  --focus: #1F6B47;
  --link: #145236;
  --label: #706C65;
  --on-accent: #FFFFFF;
  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --body: "Public Sans", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #151412; --surface: #1C1B18; --ink: #ECEAE5; --ink-2: #C2BFB7; --muted: #928F87;
    --rule: #2F2D29; --rule-soft: #252420; --accent: #5FCF97; --accent-ink: #7CC9A0; --accent-soft: #1D2E24;
    --bar: #4DBE87; --chip: #272521; --code-bg: #1A1916; --focus: #5FCF97; --link: #7CC9A0; --label: #928F87; --on-accent: #151412;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #151412; --surface: #1C1B18; --ink: #ECEAE5; --ink-2: #C2BFB7; --muted: #928F87;
  --rule: #2F2D29; --rule-soft: #252420; --accent: #5FCF97; --accent-ink: #7CC9A0; --accent-soft: #1D2E24;
  --bar: #4DBE87; --chip: #272521; --code-bg: #1A1916; --focus: #5FCF97; --link: #7CC9A0; --label: #928F87; --on-accent: #151412;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--body); font-size: 16px; line-height: 1.55;
  padding-block: env(safe-area-inset-top, 0px) env(safe-area-inset-bottom, 0px); }
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
img { max-width: 100%; height: auto; }
.wrap { max-width: 1128px; margin: 0 auto; padding-inline: clamp(16px, 4vw, 32px); }
.muted { color: var(--muted); }
.skip { position: absolute; left: -999px; top: 0; background: var(--surface); padding: .5rem 1rem; }
.skip:focus { left: 16px; z-index: 10; }

/* masthead + nav */
.mast { display: flex; justify-content: space-between; align-items: center; gap: 1rem 2rem; flex-wrap: wrap; padding-block: 1rem; border-bottom: 1px solid var(--rule); }
.wordmark { display: inline-flex; align-items: center; gap: .55rem; font-family: var(--display); font-weight: 700; font-size: 1.25rem; letter-spacing: -.02em; line-height: 1; color: var(--ink); text-decoration: none; white-space: nowrap; }
.wordmark .mark { width: 22px; height: 22px; flex: none; }
.wordmark b { color: var(--accent); font-weight: 700; }
.nav { display: flex; flex-wrap: wrap; gap: .3rem 1.1rem; font-family: var(--mono); font-size: .76rem; letter-spacing: .03em; margin: 0; padding: 0; list-style: none; }
.nav a { color: var(--ink-2); text-decoration: none; padding-block: .2rem; border-bottom: 1px solid transparent; }
.nav a:hover { color: var(--accent-ink); border-color: var(--accent); }
.nav a[aria-current="page"] { color: var(--ink); border-color: var(--accent); }
.pubtag { font-family: var(--mono); font-size: .72rem; letter-spacing: .06em; color: var(--muted); white-space: nowrap; }
.pubtag a { color: var(--ink-2); }
.mast-right { display: flex; align-items: center; gap: .8rem; }
.theme { display: none; font-family: var(--mono); font-size: .72rem; letter-spacing: .06em; color: var(--ink-2); background: none; border: 1px solid var(--rule); border-radius: 3px; padding: .25rem .55rem; cursor: pointer; line-height: 1.2; }
.js .theme { display: inline-block; }
.theme:hover { color: var(--ink); border-color: var(--accent); }

/* title blocks */
.title { padding-block: clamp(2rem, 6vw, 4rem) 1.5rem; display: grid; gap: 1rem; }
h1 { font-family: var(--display); font-weight: 700; font-size: clamp(2.4rem, 7vw, 4.4rem); line-height: 1.02; letter-spacing: -.02em; margin: 0; text-wrap: balance; max-width: 22ch; }
.stand { font-size: 1.15rem; line-height: 1.5; max-width: 62ch; color: var(--ink-2); margin: 0; }
.stand b { color: var(--ink); font-weight: 600; }
.unit { font-family: var(--mono); font-size: .8rem; color: var(--muted); margin: 0; }
.unit b { color: var(--ink); font-weight: 500; }
.toc { display: flex; flex-wrap: wrap; gap: .35rem .9rem; font-family: var(--mono); font-size: .78rem; margin: .5rem 0 0; padding: 0; list-style: none; }
.toc a { color: var(--ink-2); text-decoration: none; border-bottom: 1px solid var(--rule); }
.toc a:hover { color: var(--accent-ink); border-color: var(--accent); }
.eyebrow { font-family: var(--mono); font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--label); margin: 0 0 .5rem; }
.cta { display: inline-block; font-family: var(--mono); font-size: .82rem; letter-spacing: .04em; padding: .6rem 1rem; border: 1px solid var(--accent); color: var(--accent-ink); text-decoration: none; border-radius: 3px; }
.cta:hover { background: var(--accent-soft); }
.cta.solid { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.cta.solid:hover { background: var(--accent-ink); color: var(--on-accent); }
.actions { display: flex; flex-wrap: wrap; gap: .6rem; }

/* tiles */
.tiles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); margin-block: 1.5rem 0; }
.tile { background: var(--surface); padding: 1.1rem 1.2rem 1.2rem; display: grid; gap: .25rem; align-content: start; }
.tile .lbl { font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.tile .val { font-family: var(--display); font-weight: 700; font-size: clamp(2.4rem, 5vw, 3.4rem); line-height: 1; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.tile .val small { font-family: var(--mono); font-size: .8rem; font-weight: 400; letter-spacing: 0; color: var(--muted); margin-left: .35rem; }
.tile .sub { font-size: .9rem; color: var(--ink-2); }
.tile.ref { box-shadow: inset 0 3px 0 var(--accent); }
.after-tiles { max-width: 68ch; color: var(--ink-2); margin: 1.25rem 0 0; }
.after-tiles b { color: var(--ink); font-weight: 600; }

/* sections and prose */
section { padding-block: clamp(2.2rem, 5vw, 3.5rem); border-top: 1px solid var(--rule); }
section.first { border-top: 0; padding-top: 1rem; }
h2 { font-family: var(--display); font-weight: 700; font-size: clamp(1.5rem, 3.4vw, 2.1rem); line-height: 1.15; letter-spacing: -.015em; margin: 0 0 .75rem; text-wrap: balance; }
h3 { font-family: var(--display); font-weight: 700; font-size: 1.12rem; line-height: 1.3; margin: 1.6rem 0 .5rem; }
h2 + h3, .eyebrow + h3 { margin-top: 0; }
.lead { max-width: 68ch; font-size: 1.05rem; color: var(--ink-2); margin: 0 0 1.4rem; }
.lead b { color: var(--ink); font-weight: 600; }
.note { max-width: 68ch; font-size: .88rem; color: var(--muted); margin: 1rem 0 0; }
.note + .note { margin-top: .5rem; }
.prose { max-width: 68ch; }
.prose p { margin: 0 0 1rem; }
.prose ul, .prose ol { padding-left: 1.2rem; margin: 0 0 1rem; }
.prose li { margin-bottom: .5rem; }
.prose li b, .prose p b { font-weight: 600; color: var(--ink); }
.prose blockquote { margin: 1.2rem 0; padding: .2rem 0 .2rem 1rem; border-left: 3px solid var(--accent); color: var(--ink-2); }
.prose hr { border: 0; border-top: 1px solid var(--rule); margin: 1.6rem 0; }
.prose .fn { font-size: .86rem; color: var(--muted); }
.callout { border: 1px solid var(--rule); background: var(--surface); padding: 1rem 1.2rem; max-width: 68ch; margin: 1.2rem 0; }
.callout .eyebrow { margin-bottom: .3rem; }
.callout p:last-child { margin-bottom: 0; }
.big { font-family: var(--display); font-weight: 700; font-size: clamp(1.6rem, 4vw, 2.4rem); line-height: 1.1; letter-spacing: -.02em; }

/* cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: 1rem; }
.card { border: 1px solid var(--rule); background: var(--surface); padding: 1.1rem 1.2rem 1.2rem; display: grid; gap: .5rem; align-content: start; }
.card .k { font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--label); }
.card h3 { margin: 0; font-size: 1.08rem; }
.card p { margin: 0; color: var(--ink-2); font-size: .95rem; }
.card .n { font-family: var(--display); font-weight: 700; font-size: 2rem; line-height: 1; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.card .n small { font-family: var(--mono); font-size: .74rem; font-weight: 400; color: var(--muted); margin-left: .3rem; letter-spacing: 0; }
.card a.more { font-family: var(--mono); font-size: .76rem; }
.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; display: grid; gap: .9rem; max-width: 72ch; }
.steps li { display: grid; grid-template-columns: 2.2rem 1fr; gap: .6rem; }
.steps li::before { counter-increment: step; content: counter(step, decimal-leading-zero); font-family: var(--mono); color: var(--label); font-size: .8rem; padding-top: .2rem; }
.steps b { font-weight: 600; }

/* tables */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--rule); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: .88rem; font-variant-numeric: tabular-nums; }
caption { text-align: left; font-family: var(--mono); font-size: .76rem; letter-spacing: .06em; color: var(--muted); padding: .7rem .75rem .35rem; caption-side: top; }
thead th { font-family: var(--mono); font-weight: 500; font-size: .68rem; line-height: 1.3; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); text-align: left; padding: .55rem .5rem; border-bottom: 1px solid var(--rule); vertical-align: bottom; }
thead th.num { text-align: right; }
tbody th, tbody td { padding: .45rem .5rem; border-bottom: 1px solid var(--rule-soft); vertical-align: middle; text-align: left; font-weight: 400; }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
tbody th[scope="row"] { font-weight: 600; color: var(--ink); min-width: 11ch; overflow-wrap: anywhere; }
td.num, th.num { text-align: right; font-family: var(--mono); font-size: .82rem; white-space: nowrap; }
td.key { font-weight: 500; color: var(--ink); }
td.soft { white-space: normal; min-width: 8ch; }
tbody th.num { font-family: var(--mono); font-weight: 500; }
tr.total th, tr.total td { border-top: 1px solid var(--rule); background: var(--bg); }
.model { font-family: var(--body); }
.chip { display: inline-block; font-family: var(--mono); font-size: .72rem; padding: .05rem .4rem; border-radius: 3px; background: var(--chip); color: var(--ink-2); vertical-align: middle; }
.chip-b200 { background: var(--accent-soft); color: var(--accent-ink); }
td.key .bar { display: inline-block; width: clamp(40px, 6vw, 72px); height: 8px; background: var(--rule-soft); vertical-align: middle; margin-right: .45rem; }
td.key .bar i { display: block; height: 100%; background: var(--bar); min-width: 1px; }
.pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.stack { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1rem; }
.spec th[scope="row"] { white-space: normal; }
.plain { border: 0; background: transparent; }
.plain table { font-size: .92rem; }

/* code */
pre, code, kbd { font-family: var(--mono); }
code { font-size: .86em; background: var(--code-bg); padding: .1em .35em; border-radius: 3px; }
pre { background: var(--code-bg); border: 1px solid var(--rule); padding: .9rem 1rem; overflow-x: auto; font-size: .8rem; line-height: 1.5; margin: .8rem 0 1.2rem; max-width: 100%; }
pre code { background: none; padding: 0; font-size: inherit; }
.endpoint { display: grid; grid-template-columns: 5rem 1fr; gap: .5rem 1rem; align-items: baseline; padding: .55rem 0; border-bottom: 1px solid var(--rule-soft); font-size: .92rem; }
.endpoint code { font-size: .8rem; }
.endpoint .m { font-family: var(--mono); font-size: .72rem; color: var(--label); letter-spacing: .06em; }
.endpoints { max-width: 76ch; }

/* ledger + changes */
.ledger { list-style: none; padding: 0; margin: 0; counter-reset: src; display: grid; gap: .9rem; max-width: 76ch; }
.ledger li { display: grid; grid-template-columns: 2.2rem 1fr; gap: .6rem; font-size: .92rem; }
.ledger li::before { counter-increment: src; content: counter(src, decimal-leading-zero); font-family: var(--mono); color: var(--label); font-size: .8rem; padding-top: .15rem; }
.ledger .src { font-weight: 600; }
.ledger .use { color: var(--ink-2); }
.ledger .meta { font-family: var(--mono); font-size: .76rem; color: var(--muted); }
.changes { font-family: var(--mono); font-size: .82rem; color: var(--ink-2); padding-left: 0; list-style: none; margin: 0; }
.changes li { display: grid; grid-template-columns: 9rem 1fr; gap: 1rem; padding-block: .3rem; border-bottom: 1px solid var(--rule-soft); }
.changes time { color: var(--muted); }

/* blog */
.postlist { list-style: none; padding: 0; margin: 0; display: grid; gap: 1.2rem; max-width: 72ch; }
.postlist li { border-top: 1px solid var(--rule); padding-top: 1rem; }
.postlist h3 { margin: .2rem 0 .3rem; font-size: 1.25rem; }
.postlist h3 a { text-decoration: none; color: var(--ink); }
.postlist h3 a:hover { color: var(--accent-ink); }
.byline { font-family: var(--mono); font-size: .76rem; color: var(--muted); letter-spacing: .03em; }
.post h1 { font-size: clamp(2rem, 5.5vw, 3.2rem); max-width: 26ch; }
.post .body { max-width: 68ch; font-size: 1.05rem; }
.post .body p { margin: 0 0 1.1rem; }
.post .body h2 { font-size: 1.5rem; margin: 2rem 0 .6rem; }
.post .body h3 { font-size: 1.15rem; }
.post .body ul, .post .body ol { padding-left: 1.2rem; margin: 0 0 1.1rem; }
.post .body li { margin-bottom: .45rem; }
.post .body blockquote { margin: 1.2rem 0; padding: .2rem 0 .2rem 1rem; border-left: 3px solid var(--accent); color: var(--ink-2); }
.post .body .fig { margin: 1.4rem 0; }
.post .body .fig .cap { font-family: var(--mono); font-size: .76rem; color: var(--muted); margin-top: .4rem; }
.post .refs { max-width: 68ch; font-size: .86rem; color: var(--ink-2); border-top: 1px solid var(--rule); padding-top: 1rem; margin-top: 2rem; }
.post .refs ol { padding-left: 1.2rem; }
.upcoming { list-style: none; padding: 0; margin: 0; display: grid; gap: .4rem; max-width: 72ch; font-size: .95rem; }
.upcoming li { display: grid; grid-template-columns: 6.5rem 1fr; gap: 1rem; padding: .35rem 0; border-bottom: 1px solid var(--rule-soft); }
.upcoming .when { font-family: var(--mono); font-size: .76rem; color: var(--muted); padding-top: .15rem; }

/* footer */
footer { border-top: 1px solid var(--rule); padding-block: 2rem 3rem; display: grid; gap: .7rem; font-size: .9rem; color: var(--ink-2); margin-top: 2rem; }
footer .publine { font-size: 1rem; color: var(--ink); max-width: 62ch; margin: 0; }
footer .links { display: flex; flex-wrap: wrap; gap: .5rem 1.4rem; font-family: var(--mono); font-size: .8rem; }
footer .fine { font-size: .8rem; color: var(--muted); margin: 0; }

@media (max-width: 760px) {
  .tiles { grid-template-columns: minmax(0, 1fr); }
  .pair { grid-template-columns: minmax(0, 1fr); }
  .endpoint { grid-template-columns: 1fr; gap: .1rem; }
}
@media (max-width: 520px) {
  .changes li, .upcoming li { grid-template-columns: 1fr; gap: .1rem; }
  .ledger li { grid-template-columns: 1.6rem 1fr; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
/* D20: per-document field tables on the API page */
details.fields { margin: .9rem 0; border-top: 1px solid var(--rule); padding-top: .6rem; }
details.fields > summary { cursor: pointer; font-family: var(--mono); font-size: .8rem; letter-spacing: .02em; color: var(--ink-2); }
details.fields[open] > summary { margin-bottom: .5rem; }
/* D3 F7: the ladder row the index uses */
tr.best > th, tr.best > td { background: var(--accent-soft); }
tr.best > td.key { color: var(--accent-ink); font-weight: 600; }
/* D23: keep model names on one line in the six-column two-task table; it scrolls on a phone */
#workloads tbody th .model { white-space: nowrap; }
/* phone width: long inline code (hashes, URLs) wraps instead of widening the page */
p code, li code, td code, .unit code { overflow-wrap: anywhere; }
/* model pages */
.tiles.auto { grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }
.faq h3 { font-size: 1.05rem; margin: 1.1rem 0 .3rem; }
.faq h3:first-child { margin-top: 0; }
.faq p { margin: 0 0 .4rem; }
a.model { color: inherit; text-decoration: none; border-bottom: 1px solid var(--rule); }
a.model:hover { color: var(--accent-ink); border-color: var(--accent); }