/* Components of the zoo website (feature 008), after the Claude Design identity sheet
   (specs/008-zoo-website/design/source/identity-system.html). Colours come from tokens.css only.
   Flat and quiet: borders instead of shadows; the focus ring is never removed. */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Figtree", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}
h1, h2, h3, h4, p, ul, ol, figure, pre, dl, dd { margin: 0; }
ul, ol { padding-left: 1.3em; }
li + li { margin-top: 4px; }
a { color: var(--link); text-underline-offset: 3px; }
a:hover { color: var(--link-hover); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
code, pre, .mono { font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
code { font-size: .88em; background: var(--code-bg); padding: 1px 5px; border-radius: 4px; }
pre code { background: none; padding: 0; font-size: inherit; }
img, svg { max-width: 100%; }

.skip { position: absolute; left: 12px; top: -60px; z-index: 10; padding: 10px 16px; border-radius: 8px;
  background: var(--accent); color: var(--on-accent); font-weight: 650; text-decoration: none; }
.skip:focus { top: 12px; color: var(--on-accent); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; }

/* ---- type ------------------------------------------------------------------------------------ */
.h-display { font-size: clamp(34px, 5.4vw, 52px); line-height: 1.08; font-weight: 700; letter-spacing: -.025em; }
.h1 { font-size: clamp(30px, 4vw, 38px); line-height: 1.15; font-weight: 700; letter-spacing: -.02em; }
.h2 { font-size: clamp(24px, 3vw, 30px); line-height: 1.2; font-weight: 700; letter-spacing: -.015em; }
.h3 { font-size: 22px; line-height: 1.3; font-weight: 650; letter-spacing: -.01em; }
.lead { font-size: 20px; line-height: 1.55; }
.small { font-size: 15px; line-height: 1.5; }
.cap { font-size: 13px; line-height: 1.45; color: var(--muted); }
.muted { color: var(--muted); }
.eyebrow { font-size: 13px; font-weight: 650; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.prose { max-width: 720px; }
.prose > * + * { margin-top: 12px; }
.prose code { overflow-wrap: anywhere; }
/* Code blocks of rendered Markdown (the quickstart): wrap instead of scrolling sideways at 390 px. */
.prose pre { background: var(--code-bg); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px;
  font-size: 14px; line-height: 1.7; white-space: pre-wrap; word-break: break-word; }

/* ---- layout ---------------------------------------------------------------------------------- */
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.sec { padding: 72px 0; border-top: 1px solid var(--border); scroll-margin-top: 8px; }
.stack { display: flex; flex-direction: column; gap: 16px; }
.row { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(460px, 100%), 1fr)); gap: 24px; }
.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); gap: 16px; }
.sec-head { display: flex; flex-direction: column; gap: 8px; margin-bottom: 28px; max-width: 760px; }

/* ---- header and footer ----------------------------------------------------------------------- */
.hd { border-bottom: 1px solid var(--border); background: var(--bg); }
.hd-in { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 4px 24px;
  padding: 8px 0; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none;
  font-weight: 700; font-size: 18px; letter-spacing: -.01em; min-height: 44px; }
.brand:hover { color: var(--text); }
.nav { display: flex; flex-wrap: wrap; gap: 0 20px; }
.nav a { color: var(--text); text-decoration: none; min-height: 44px; display: inline-flex; align-items: center;
  font-weight: 500; font-size: 15px; border-bottom: 2px solid transparent; }
.nav a:hover { color: var(--text); border-bottom-color: var(--accent); }
.ft { border-top: 1px solid var(--border); padding: 28px 0 40px; font-size: 15px; color: var(--muted);
  display: flex; flex-direction: column; gap: 14px; }
.ft nav { display: flex; flex-wrap: wrap; gap: 0 22px; }
.ft nav a { min-height: 44px; display: inline-flex; align-items: center; }

/* ---- controls -------------------------------------------------------------------------------- */
.btn { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 20px; border-radius: 8px;
  background: var(--accent); color: var(--on-accent); font: inherit; font-weight: 650; text-decoration: none;
  border: 0; cursor: pointer; }
.btn:hover { filter: brightness(1.1); color: var(--on-accent); }
.btn-ghost { background: transparent; color: var(--text); border: 1.5px solid var(--border-strong); }
.btn-ghost:hover { color: var(--text); border-color: var(--accent); filter: none; }
.chip { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 600; padding: 2px 11px;
  border-radius: 999px; border: 1px solid var(--border-strong); color: var(--text); line-height: 1.6;
  white-space: nowrap; }
.chip i { width: 9px; height: 9px; border-radius: 50%; border: 1.5px solid var(--text); background: var(--mark);
  display: inline-block; }
.chip.wip i, .chip.deprecated i { background: transparent; }
.chip.deprecated { border-style: dashed; }
/* usage restriction of a non-commercial model (feature 011), shown before the install line */
.notice { margin-top: 14px; padding: 10px 14px; border: 1px solid var(--border-strong); border-left-width: 4px;
  border-radius: 8px; color: var(--text); }

/* ---- hero ------------------------------------------------------------------------------------ */
.hero { padding: 64px 0 56px; }
.hero-in { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 40px; align-items: center; }
.hero-art svg { width: 100%; height: auto; max-width: 420px; }
@media (max-width: 860px) { .hero-in { grid-template-columns: 1fr; } .hero-art { display: none; } }

/* ---- cards, tiles, metrics -------------------------------------------------------------------- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.tile { display: flex; flex-direction: column; gap: 10px; padding: 20px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 12px; color: var(--text); text-decoration: none; }
a.tile:hover { border-color: var(--accent); color: var(--text); }
.tile-top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px; }
.tile-name { display: flex; align-items: center; gap: 10px; white-space: nowrap; }
.tile dl { display: grid; grid-template-columns: auto 1fr; gap: 2px 14px; font-size: 14px; }
.tile dt { color: var(--muted); }
.tile svg { flex: none; }
.metric { display: flex; flex-direction: column; gap: 4px; padding: 20px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 12px; }
.metric .v { font-size: 40px; line-height: 1.1; font-weight: 700; letter-spacing: -.025em; }
.metric .v small { font-size: 18px; font-weight: 600; letter-spacing: 0; }
.metric .ref { font-size: 15px; line-height: 1.45; }
.metric .hw { font-size: 13px; line-height: 1.45; color: var(--muted); }
.why { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); gap: 16px; }
.why .card h3 { font-size: 19px; margin-bottom: 6px; }
.fact { font-weight: 700; white-space: nowrap; }
sup a { text-decoration: none; font-size: 12px; padding: 0 2px; }
.notes { font-size: 13px; color: var(--muted); max-width: 900px; overflow-wrap: anywhere; }
.notes li { margin-top: 4px; }
.checks { display: flex; flex-wrap: wrap; gap: 8px 22px; padding: 14px 18px; border: 1px solid var(--border);
  border-radius: 10px; background: var(--surface); font-size: 15px; margin-bottom: 20px; }
.checks strong { font-weight: 650; }

/* ---- code ------------------------------------------------------------------------------------ */
.code { background: var(--code-bg); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.code-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 4px 6px 4px 16px;
  border-bottom: 1px solid var(--border); font-size: 13px; color: var(--muted); min-height: 30px; }
.code pre { padding: 16px 18px; overflow-x: auto; font-size: 14px; line-height: 1.7; white-space: pre; }
.code pre.wrap-pre { white-space: pre-wrap; word-break: break-word; }
.copy { display: none; min-height: 44px; padding: 0 14px; background: transparent; border: 1px solid var(--border-strong);
  border-radius: 8px; color: var(--text); font: inherit; font-size: 14px; font-weight: 600; cursor: pointer; }
.js .copy { display: inline-block; }
.copy:hover { border-color: var(--accent); }
.steps { counter-reset: step; display: flex; flex-direction: column; gap: 24px; }
.step { counter-increment: step; }
.step h3 { font-size: 19px; margin-bottom: 10px; }
.step h3::before { content: counter(step) ". "; }

/* ---- tables ---------------------------------------------------------------------------------- */
.tw { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
.tbl { width: 100%; border-collapse: collapse; font-size: 15px; line-height: 1.45; }
.tbl caption { text-align: left; padding: 10px 14px 0; font-weight: 650; }
.tbl th { text-align: left; font-weight: 650; font-size: 13px; color: var(--muted); padding: 10px 14px;
  border-bottom: 1.5px solid var(--border-strong); white-space: nowrap; }
.tbl td { padding: 11px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl td.mono, .tbl td code { font-size: 13px; }
.tbl tr.deprecated td { color: var(--muted); }
details { border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
details > summary { cursor: pointer; padding: 12px 16px; font-weight: 650; min-height: 44px; }
details[open] > summary { border-bottom: 1px solid var(--border); }
details > .tw, details > .code { border: 0; border-radius: 0 0 10px 10px; }

/* ---- callouts, banners ------------------------------------------------------------------------ */
.callout { display: flex; gap: 14px; padding: 16px 18px; border: 1px solid var(--border-strong);
  background: var(--surface-2); border-radius: 10px; }
.callout svg { flex: none; margin-top: 3px; }
.callout .prose { max-width: none; }
.banner { padding: 14px 0; background: var(--surface-2); border-bottom: 1px solid var(--border-strong); }

/* ---- output viewer: job solid, pain dashed, gain dotted (never colour alone) ------------------- */
.kinds { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; }
.kinds span, .kind { font-size: 13px; font-weight: 600; padding: 1px 8px; border-radius: 4px; color: var(--text);
  border-bottom: 2px solid var(--job-ink); background: var(--job-bg); }
.kinds .pain, .kind.pain { background: var(--pain-bg); border-bottom: 2px dashed var(--pain-ink); }
.kinds .gain, .kind.gain { background: var(--gain-bg); border-bottom: 2px dotted var(--gain-ink); }
.example + .example { margin-top: 40px; }
.example h3 { margin-bottom: 12px; }
.viewer { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); gap: 16px;
  align-items: start; margin-bottom: 12px; }
.vtext { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 18px 20px;
  font-size: 17px; line-height: 2; }
.hl { color: var(--text); padding: 1px 3px; margin: 0 -1px; border-radius: 4px; text-decoration: none;
  border-bottom: 2px solid var(--job-ink); background: var(--job-bg); line-height: inherit; }
.hl:hover { color: var(--text); }
.hl.pain { background: var(--pain-bg); border-bottom: 2px dashed var(--pain-ink); }
.hl.gain { background: var(--gain-bg); border-bottom: 2px dotted var(--gain-ink); }
.hl.sel, .jitem.sel, .hl:target, .jitem:target { outline: 2px solid var(--text); outline-offset: 1px; }
.jlist { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.jitem { display: block; background: var(--code-bg); border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 14px; color: var(--text); text-decoration: none; }
.jitem:hover { color: var(--text); border-color: var(--accent); }
.jitem pre { white-space: pre-wrap; word-break: break-word; font-size: 13px; line-height: 1.55; }
.empty { padding: 14px 16px; border: 1px dashed var(--border-strong); border-radius: 10px; }

/* ---- charts ---------------------------------------------------------------------------------- */
.ch { width: 100%; max-width: 560px; height: auto; }
.ch text { fill: var(--text); font-family: "Figtree", system-ui, sans-serif; font-size: 13px; }
.ch .mut { fill: var(--muted); font-size: 12px; }
.ch .ax { stroke: var(--border-strong); stroke-width: 1.5; fill: none; }
.ch .gr { stroke: var(--border); stroke-width: 1; fill: none; }
.ch .sa { fill: var(--s-a); }
.ch .sb { fill: var(--surface); stroke: var(--s-c); stroke-width: 2; }
.ch .sbl { stroke: var(--s-b); stroke-width: 2; stroke-dasharray: 6 5; fill: none; }
.lol { display: grid; grid-template-columns: minmax(110px, 190px) 1fr; gap: 6px 14px; align-items: center;
  font-size: 15px; max-width: 760px; }
.lol .tr { position: relative; height: 44px; border-bottom: 1px solid var(--border); }
.lol .ln { position: absolute; left: 0; top: 50%; height: 3px; background: var(--s-a); border-radius: 2px; }
.lol .dt { position: absolute; top: 50%; width: 14px; height: 14px; margin: -7px 0 0 -7px; border-radius: 50%;
  background: var(--s-a); }
.lol .vl { position: absolute; top: 0; font-size: 14px; font-weight: 650; white-space: nowrap; }
figure.chart { display: flex; flex-direction: column; gap: 10px; }
figure.chart figcaption { font-size: 18px; font-weight: 650; }

@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .sec { padding: 48px 0; }
  .hero { padding: 40px 0 32px; }
  .metric .v { font-size: 32px; }
}
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }

/* ---- feature 014: layers of the model page ------------------------------------------------ */
.status-line { padding: 10px 14px; border: 1px solid var(--border-strong); border-left-width: 4px;
  border-radius: 8px; background: var(--surface-2); font-weight: 600; }
.status-line a { font-weight: 600; }
.overview-more { display: flex; flex-direction: column; gap: 24px; margin-top: 40px; }
ul.why { list-style: none; padding: 0; margin: 0; }
.not-for { display: flex; flex-direction: column; gap: 8px; }
.not-for ul { margin: 0; padding-left: 20px; display: flex; flex-direction: column; gap: 4px; }
.layers ol { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px 20px;
  font-size: 15px; }
.layers li { counter-increment: layer; }
.layers li::before { content: counter(layer) "  "; color: var(--muted); font-variant-numeric: tabular-nums; }
.layers ol { counter-reset: layer 1; }
.metric .bar { width: 100%; max-width: 240px; height: auto; margin-top: 6px; }
ul.why li + li, .layers li + li { margin-top: 0; }
.limits-short { display: flex; flex-direction: column; gap: 10px; max-width: 860px; }
.limits-short ul { margin: 0; padding-left: 20px; display: flex; flex-direction: column; gap: 6px; }
.limits-short li + li { margin-top: 0; }
.limits-short .h3 { font-size: 19px; margin-top: 6px; }
.evidence a { white-space: nowrap; }
#limits details { border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px; background: var(--surface); }
#limits details summary { cursor: pointer; font-weight: 600; }
#limits details[open] summary { margin-bottom: 10px; }