/* OpenSim.zip — scientific workstation / reference manual. */
@font-face { font-family: 'Instrument Sans'; font-style: normal; font-weight: 400 700; font-display: swap; src: url(/assets/fonts/instrument-sans.woff2) format('woff2'); }
@font-face { font-family: 'JetBrains Mono'; font-style: normal; font-weight: 100 800; font-display: swap; src: url(/assets/fonts/jetbrains-mono.woff2) format('woff2'); }

:root {
  --bg: #ffffff;
  --bg-2: #f4f5f7;
  --bg-3: #eceef2;
  --canvas: #ffffff;
  --ink: #0e1116;
  --ink-2: #353b45;
  --muted: #5a6270;
  --line: #e1e4e9;
  --line-strong: #b9bfc9;
  --grid: #eef0f3;
  --focus: #1d5bd8;
  --link: #0e1116;
  --link-hover: #1d5bd8;
  /* data colours: used for simulation states and series only */
  --d1: #1d5bd8;
  --d2: #e0561b;
  --d3: #0e8a6d;
  --d4: #b98200;
  --d5: #8a929e;
  --d6: #c0265e;
  --sans: 'Instrument Sans', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Consolas, monospace;
  --r: 4px;
  --wrap: 1200px;
  --gut: 16px;
}
@media (min-width: 640px) { :root { --gut: 24px; } }
@media (min-width: 1024px) { :root { --gut: 32px; } }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: 16px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 17px/1.6 var(--sans); font-feature-settings: 'ss01'; overflow-x: hidden; }
@media (max-width: 639px) { body { font-size: 16px; } }
img, svg, canvas { display: block; max-width: 100%; }
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 3px; text-decoration-color: var(--line-strong); }
a:hover { color: var(--link-hover); text-decoration-color: currentColor; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 2px; }
h1, h2, h3, h4 { font-weight: 600; line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 .5em; text-wrap: balance; }
h1 { font-size: clamp(2rem, 1.4rem + 2.6vw, 3rem); letter-spacing: -0.028em; line-height: 1.08; }
h2 { font-size: clamp(1.3rem, 1.15rem + .6vw, 1.6rem); }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; }
code, kbd, samp, var, .mono { font-family: var(--mono); font-size: .86em; font-variant-ligatures: none; }
input[type=number], .readout dd, .num { font-variant-ligatures: none; }
var { font-style: italic; font-family: var(--sans); font-size: 1em; }
code { background: var(--bg-2); border: 1px solid var(--line); border-radius: 3px; padding: .05em .3em; }
small { font-size: .82rem; }
.sr { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: 8px; top: -60px; z-index: 50; background: var(--ink); color: #fff; padding: 8px 12px; border-radius: var(--r); }
.skip:focus { top: 8px; color: #fff; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gut); }
.narrow { max-width: 820px; }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ---------- header / footer ---------- */
.site-header { border-bottom: 1px solid var(--line); background: var(--bg); }
.hdr { display: flex; align-items: center; gap: 12px 28px; min-height: 60px; flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px; }
.brand { display: inline-flex; align-items: center; gap: 9px; text-decoration: none; color: var(--ink); font-weight: 650; font-size: 1.08rem; letter-spacing: -0.01em; }
.brand:hover { color: var(--ink); }
.brand .mark { width: 26px; height: 26px; color: var(--ink); flex: none; }
.wm-zip { font-family: var(--mono); font-weight: 500; font-size: .9em; color: var(--muted); letter-spacing: -0.02em; }
.nav ul { list-style: none; display: flex; gap: 4px; margin: 0; padding: 0; }
.nav a { display: block; padding: 8px 10px; text-decoration: none; color: var(--ink-2); font-size: .95rem; border-radius: var(--r); }
.nav a:hover { background: var(--bg-2); color: var(--ink); }
.nav a[aria-current] { color: var(--ink); box-shadow: inset 0 -2px 0 var(--ink); border-radius: 0; }
.hsearch { margin-left: auto; position: relative; }
.hsearch input { width: 240px; }
.hsearch-key { position: absolute; right: 8px; top: 50%; transform: translateY(-50%); font-size: .72rem; color: var(--muted); border: 1px solid var(--line); border-radius: 3px; padding: 0 5px; background: var(--bg); pointer-events: none; }
.hsearch input:focus + .hsearch-key, .hsearch input:not(:placeholder-shown) + .hsearch-key { display: none; }
@media (max-width: 860px) {
  .hsearch { display: none; }
  .nav { order: 3; width: 100%; margin: 0 calc(-1 * 10px); }
  .hdr { gap: 4px 16px; }
}
@media (max-width: 360px) { .nav a { padding: 8px 7px; font-size: .9rem; } }
.site-footer { border-top: 1px solid var(--line); margin-top: 96px; background: var(--bg-2); }
.ftr { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 28px; padding-top: 28px; padding-bottom: 28px; }
.brand-sm { font-size: .98rem; }
.brand-sm .mark { width: 22px; height: 22px; }
.ftr ul { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 18px; margin: 0; padding: 0; }
.ftr ul a { color: var(--ink-2); text-decoration: none; font-size: .92rem; display: inline-block; padding: 6px 0; }
.ftr ul a:hover { color: var(--link-hover); text-decoration: underline; }
.ftr-note { margin: 0 0 0 auto; color: var(--muted); font-size: .85rem; }
@media (max-width: 760px) { .ftr-note { margin-left: 0; width: 100%; } }

/* ---------- form elements ---------- */
input[type=search], input[type=number], input[type=text], select {
  font: 400 .95rem/1.2 var(--sans); color: var(--ink); background: var(--bg); border: 1px solid var(--line-strong); border-radius: var(--r); padding: 9px 11px; min-height: 40px; width: 100%;
}
input[type=number] { font-family: var(--mono); font-size: .88rem; font-variant-numeric: tabular-nums; }
input:focus-visible, select:focus-visible { outline: 2px solid var(--focus); outline-offset: 0; border-color: var(--focus); }
select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 16px) 50%, calc(100% - 11px) 50%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 30px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 40px; padding: 8px 14px; border: 1px solid var(--line-strong); border-radius: var(--r); background: var(--bg); color: var(--ink); font: 500 .92rem/1 var(--sans); text-decoration: none; cursor: pointer; transition: background-color .15s, border-color .15s; white-space: nowrap; }
.btn:hover { background: var(--bg-2); border-color: var(--ink-2); color: var(--ink); }
.btn-primary { background: var(--ink); border-color: var(--ink); color: #fff; }
.btn-primary:hover { background: #2a3039; border-color: #2a3039; color: #fff; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-block { width: 100%; }
.btn[aria-pressed=true] { background: var(--bg-3); border-color: var(--ink); }
.linkbtn { background: none; border: 0; padding: 0; font: inherit; color: var(--ink); text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 3px; cursor: pointer; }
.linkbtn:hover { color: var(--link-hover); }

/* ---------- common page parts ---------- */
.crumbs { margin: 20px 0 0; font-size: .86rem; color: var(--muted); }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; margin: 0; padding: 0; }
.crumbs li:not(:last-child)::after { content: '/'; margin: 0 8px; color: var(--line-strong); }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--link-hover); text-decoration: underline; }
.crumbs [aria-current] { color: var(--ink-2); }
.page-head { padding: 28px 0 24px; max-width: 820px; }
.eyebrow { font-size: .82rem; color: var(--muted); margin: 0 0 10px; letter-spacing: .02em; }
.eyebrow a { color: var(--muted); }
.eyebrow .mono { font-size: .92em; color: var(--ink-2); }
.lead { font-size: 1.14rem; line-height: 1.55; color: var(--ink-2); }
.lead p:last-child { margin-bottom: 0; }
@media (max-width: 639px) { .lead { font-size: 1.04rem; } .page-head { padding: 20px 0 18px; } }

/* ---------- prose ---------- */
.prose, .doc-main { max-width: 72ch; }
.prose h2, .doc-sec h2 { margin-top: 1.9em; padding-top: .2em; }
.doc-sec:first-child h2 { margin-top: .4em; }
.prose h3, .doc-sec h3 { margin-top: 1.6em; }
.prose ul, .prose ol, .doc-sec ul, .doc-sec ol { padding-left: 1.3em; margin: 0 0 1.1em; }
.prose li, .doc-sec li { margin: .3em 0; }
.eq { font-family: var(--sans); font-size: 1.08rem; background: var(--bg-2); border-left: 2px solid var(--ink); padding: 12px 16px; margin: 0 0 1.1em; overflow-x: auto; white-space: nowrap; }
.eq + .eq { margin-top: -0.6em; }
.eq var { font-style: italic; }
.steps { counter-reset: s; list-style: none; padding-left: 0 !important; }
.steps > li { counter-increment: s; position: relative; padding-left: 2.1em; }
.steps > li::before { content: counter(s); position: absolute; left: 0; top: .15em; font: 500 .74rem/1.55 var(--mono); width: 1.5em; text-align: center; border: 1px solid var(--line-strong); border-radius: 3px; color: var(--ink-2); }
table { border-collapse: collapse; width: 100%; font-size: .93rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { font-weight: 600; font-size: .8rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; border-bottom-color: var(--line-strong); }
td.num, th.num { text-align: right; white-space: nowrap; }
caption { caption-side: bottom; text-align: left; font-size: .82rem; color: var(--muted); padding-top: 8px; }
.table-scroll { overflow-x: auto; margin: 0 0 1.2em; }
.kv { max-width: 520px; margin-bottom: 1.2em; }
.kv th { font-weight: 400; color: var(--ink-2); }
.kv td { text-align: right; }
.note { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--r); padding: 12px 16px; font-size: .95rem; }

/* ---------- code ---------- */
.code { border: 1px solid var(--line); border-radius: var(--r); margin: 0 0 1.2em; background: #fbfbfc; overflow: hidden; }
.code-bar { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 4px 6px 4px 12px; border-bottom: 1px solid var(--line); background: var(--bg-2); font: 500 .76rem/1 var(--mono); color: var(--muted); }
.copy { font: 500 .74rem/1 var(--mono); color: var(--ink-2); background: var(--bg); border: 1px solid var(--line); border-radius: 3px; padding: 7px 10px; cursor: pointer; min-height: 30px; }
.copy:hover { border-color: var(--ink-2); }
.code pre { margin: 0; padding: 14px 16px; overflow-x: auto; font: 400 .84rem/1.6 var(--mono); tab-size: 2; }
.code code { background: none; border: 0; padding: 0; font-size: 1em; }
.t-c { color: #6a7280; font-style: italic; }
.t-s { color: #0b7a5b; }
.t-n { color: #b0470f; }
.t-k { color: #1947b8; }

/* ---------- lab ---------- */
.lab { border: 1px solid var(--line-strong); border-radius: 6px; background: var(--bg); margin: 0 0 40px; }
.lab-bar { display: flex; align-items: center; justify-content: space-between; gap: 8px 16px; flex-wrap: wrap; padding: 8px 14px; border-bottom: 1px solid var(--line); background: var(--bg-2); border-radius: 6px 6px 0 0; }
.lab-bar h2 { font-size: .8rem; margin: 0; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-2); font-weight: 600; }
.lab-meta { font: 400 .76rem/1.3 var(--mono); color: var(--muted); }
.lab-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; }
.lab-stage { padding: 14px; display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); align-content: start; border-right: 1px solid var(--line); min-width: 0; }
.lab-stack .lab-stage { grid-template-columns: minmax(0, 1fr); }
.view { margin: 0; min-width: 0; }
.view-wide { grid-column: 1 / -1; }
.view canvas { width: 100%; height: auto; background: var(--canvas); border: 1px solid var(--line); border-radius: 3px; touch-action: manipulation; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; margin-top: 7px; font-size: .8rem; color: var(--ink-2); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.sw { display: inline-block; width: 14px; height: 3px; border-radius: 2px; background: var(--ink); }
.sw-d1 { background: var(--d1); } .sw-d2 { background: var(--d2); } .sw-d3 { background: var(--d3); } .sw-d4 { background: var(--d4); } .sw-d5 { background: var(--d5); } .sw-d6 { background: var(--d6); } .sw-muted { background: var(--muted); } .sw-ink { background: var(--ink); } .sw-line { background: var(--line-strong); } .sw-grid { background: var(--line); } .sw-axis { background: var(--line-strong); } .sw-ink2 { background: var(--ink-2); }
.sw-dash { background: repeating-linear-gradient(90deg, var(--muted) 0 3px, transparent 3px 6px) !important; }
.sw-dash.sw-ink { background: repeating-linear-gradient(90deg, var(--ink) 0 3px, transparent 3px 6px) !important; }
.sw-dash.sw-d1 { background: repeating-linear-gradient(90deg, var(--d1) 0 3px, transparent 3px 6px) !important; }
.sw-dash.sw-d2 { background: repeating-linear-gradient(90deg, var(--d2) 0 3px, transparent 3px 6px) !important; }
.sw-dash.sw-d3 { background: repeating-linear-gradient(90deg, var(--d3) 0 3px, transparent 3px 6px) !important; }
.lab-controls { padding: 14px; display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.lab-controls fieldset { border: 0; margin: 0; padding: 0; display: grid; gap: 12px; min-width: 0; }
.lab-controls legend { font: 600 .74rem/1 var(--sans); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); padding: 0; margin-bottom: 10px; }
.ctl { display: grid; gap: 4px; }
.ctl label { font-size: .88rem; color: var(--ink); font-weight: 500; }
.ctl label var { color: var(--ink-2); font-weight: 400; margin-left: 2px; }
.ctl .unit { color: var(--muted); font-weight: 400; font-size: .92em; }
.ctl small { color: var(--muted); line-height: 1.35; font-size: .78rem; }
.ctl-row { display: grid; grid-template-columns: minmax(0, 1fr) 104px; gap: 10px; align-items: center; }
.ctl-row input[type=number] { min-height: 36px; padding: 6px 8px; }
.ctl-row:has(> input:only-child) { grid-template-columns: 1fr; }
input[type=range] { width: 100%; margin: 0; accent-color: var(--ink); height: 28px; cursor: pointer; }
.ctl-seed input { max-width: 160px; }
.lab-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.lab-actions .btn { flex: 1 1 auto; min-width: 72px; min-height: 44px; }
.readout { margin: 0; display: grid; grid-template-columns: 1fr; border-top: 1px solid var(--line); padding-top: 10px; }
.readout div { display: flex; justify-content: space-between; gap: 12px; padding: 4px 0; border-bottom: 1px dashed var(--line); }
.readout dt { font-size: .84rem; color: var(--ink-2); }
.readout dd { margin: 0; font: 500 .9rem/1.4 var(--mono); font-variant-numeric: tabular-nums; text-align: right; }
.lab-status { font-size: .84rem; color: var(--muted); margin: 0; min-height: 2.6em; }
.lab-nojs { margin: 0; padding: 10px 14px; border-top: 1px solid var(--line); font-size: .9rem; color: var(--ink-2); background: var(--bg-2); }
@media (scripting: none) { .lab-stage, .lab-actions, .lab input[type=range] { display: none; } .lab-grid { grid-template-columns: 1fr; } }
@media (max-width: 900px) {
  .lab-grid { grid-template-columns: minmax(0, 1fr); }
  .lab-stage { border-right: 0; border-bottom: 1px solid var(--line); padding: 10px; }
  .lab-controls { padding: 12px; }
  .readout { grid-template-columns: 1fr 1fr; column-gap: 20px; }
}
@media (max-width: 480px) { .readout { grid-template-columns: 1fr; } .lab-actions .btn { min-width: 64px; padding: 8px 10px; } }

/* ---------- simulation document ---------- */
.sim-head { padding-bottom: 20px; }
.doc { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 56px; align-items: start; }
.doc-rail { position: sticky; top: 16px; display: grid; gap: 22px; font-size: .9rem; }
.rail-card { border: 1px solid var(--line); border-radius: var(--r); padding: 14px; background: var(--bg-2); }
.rail-k { font: 600 .72rem/1 var(--sans); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 8px; }
.rail-card .pkg-name { font: 600 .95rem/1.2 var(--mono); margin: 0 0 6px; word-break: break-all; }
.rail-meta { font: 400 .74rem/1.5 var(--mono); color: var(--muted); margin: 0 0 12px; }
.rail-toc ol { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line); }
.rail-toc a { display: block; padding: 4px 0 4px 12px; color: var(--ink-2); text-decoration: none; margin-left: -1px; border-left: 1px solid transparent; }
.rail-toc a:hover { color: var(--ink); border-left-color: var(--ink); }
@media (max-width: 1080px) { .doc { grid-template-columns: minmax(0, 1fr); gap: 0; } .doc-rail { display: none; } }
.doc-sec { scroll-margin-top: 16px; }
.pkg { border: 1px solid var(--line-strong); border-radius: var(--r); overflow: hidden; }
.pkg-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; padding: 12px 14px; background: var(--bg-2); border-bottom: 1px solid var(--line); }
.pkg-head .pkg-name { font: 600 1rem/1.2 var(--mono); }
.pkg-size { color: var(--muted); font-size: .88rem; }
.pkg-head .btn { margin-left: auto; }
.pkg .files { margin: 0; }
.pkg .files td, .pkg .files th { padding-left: 14px; padding-right: 14px; }
.pkg .files tr:last-child td { border-bottom: 0; }
@media (max-width: 560px) { .pkg-head .btn { margin-left: 0; width: 100%; } .files td:nth-child(2) { font-size: .86rem; } }
.rel { list-style: none; padding: 0 !important; margin: 0 0 1em; border-top: 1px solid var(--line); }
.rel li { display: grid; grid-template-columns: minmax(180px, 240px) 1fr; gap: 4px 20px; padding: 10px 0; border-bottom: 1px solid var(--line); margin: 0 !important; }
.rel a { display: flex; gap: 10px; align-items: baseline; font-weight: 600; text-decoration: none; }
.rel a:hover .rel-name { text-decoration: underline; }
.rel-id { color: var(--muted); font-weight: 400; font-size: .78rem; }
.rel-d { color: var(--ink-2); font-size: .93rem; }
@media (max-width: 640px) { .rel li { grid-template-columns: 1fr; } }
.also { font-size: .95rem; color: var(--ink-2); }
.refs { font-size: .9rem; color: var(--ink-2); padding-left: 1.4em; }
.refs li { margin: .5em 0; overflow-wrap: anywhere; }

/* ---------- directory lists ---------- */
.dir { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.dir-row { display: grid; grid-template-columns: minmax(200px, 280px) minmax(0, 1fr) auto; gap: 4px 20px; align-items: baseline; padding: 11px 0; border-bottom: 1px solid var(--line); }
.dir-row > a { display: flex; gap: 12px; align-items: baseline; text-decoration: none; font-weight: 600; }
.dir-row > a:hover .dir-name { text-decoration: underline; text-decoration-color: currentColor; }
.dir-id { font: 400 .76rem/1 var(--mono); color: var(--muted); flex: none; }
.dir-d { color: var(--ink-2); font-size: .94rem; }
.dir-cat { font: 500 .7rem/1 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
@media (max-width: 720px) { .dir-row { grid-template-columns: 1fr; } .dir-d { padding-left: calc(4.4em); font-size: .9rem; } }
.dir-lg .dir-row { padding: 14px 0; }

/* ---------- home ---------- */
.hero { border-bottom: 1px solid var(--line); background: linear-gradient(var(--bg), var(--bg)) padding-box, var(--bg); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 48px; align-items: center; padding-top: 56px; padding-bottom: 56px; }
.hero h1 { font-size: clamp(2.4rem, 1.6rem + 3.4vw, 4rem); margin-bottom: .3em; }
.hero-line { font-size: 1.2rem; color: var(--ink-2); max-width: 36ch; }
.bigsearch { display: flex; gap: 8px; max-width: 620px; margin: 22px 0 18px; position: relative; }
.bigsearch input { min-height: 48px; font-size: 1rem; padding: 12px 14px; }
.bigsearch .btn { min-height: 48px; padding: 0 20px; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; }
.chips a { display: inline-block; font: 500 .74rem/1 var(--mono); text-transform: uppercase; letter-spacing: .07em; color: var(--ink-2); text-decoration: none; border: 1px solid var(--line-strong); border-radius: 3px; padding: 9px 10px; }
.chips a:hover { border-color: var(--ink); color: var(--ink); background: var(--bg-2); }
.mini { margin: 0; border: 1px solid var(--line-strong); border-radius: 6px; background: var(--bg); }
.mini-bar { display: flex; justify-content: space-between; gap: 8px; padding: 7px 12px; border-bottom: 1px solid var(--line); background: var(--bg-2); font-size: .76rem; border-radius: 6px 6px 0 0; }
.mini-bar .mono { color: var(--muted); font-size: .76rem; }
.mini canvas { width: calc(100% - 24px); height: auto; aspect-ratio: 1; margin: 12px; border: 1px solid var(--line); }
.mini-out { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0 12px; border-top: 1px solid var(--line); }
.mini-out div { padding: 8px 0 4px; }
.mini-out dt { font-size: .72rem; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.mini-out dd { margin: 0; font: 500 1rem/1.3 var(--mono); font-variant-numeric: tabular-nums; }
.mini figcaption { font-size: .8rem; color: var(--ink-2); padding: 8px 12px 12px; line-height: 1.45; }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 28px; padding-top: 32px; padding-bottom: 36px; }
  .mini { max-width: 420px; }
}
@media (max-width: 560px) { .bigsearch .btn { display: none; } }
.block { margin-top: 64px; }
@media (max-width: 639px) { .block { margin-top: 44px; } }
.block-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; border-bottom: 1px solid var(--ink); padding-bottom: 10px; margin-bottom: 0; }
.block-head h2 { margin: 0; font-size: 1.25rem; }
.block-head a { font-size: .92rem; white-space: nowrap; }
.flag { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 40px; }
.flag li { border-bottom: 1px solid var(--line); }
.flag a { display: grid; grid-template-columns: 38px 1fr; gap: 2px 12px; padding: 14px 0; text-decoration: none; color: var(--ink); }
.flag-n { font: 500 .86rem/1.5 var(--mono); color: var(--muted); grid-row: span 3; }
.flag-name { font-weight: 600; font-size: 1.08rem; }
.flag a:hover .flag-name { text-decoration: underline; text-underline-offset: 3px; }
.flag-d { font-size: .92rem; color: var(--ink-2); line-height: 1.45; }
.flag-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.flag-tags span { font: 500 .66rem/1 var(--mono); letter-spacing: .05em; text-transform: uppercase; color: var(--muted); border: 1px solid var(--line); border-radius: 3px; padding: 4px 6px; }
@media (max-width: 760px) { .flag { grid-template-columns: 1fr; } }
.fields { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0 32px; }
.field { padding: 18px 0; border-bottom: 1px solid var(--line); }
.field h3 { font-size: 1rem; margin: 0 0 8px; display: flex; justify-content: space-between; gap: 8px; }
.field h3 a { text-decoration: none; }
.field h3 a:hover { text-decoration: underline; }
.count { font: 400 .76rem/1.6 var(--mono); color: var(--muted); }
.field ul { list-style: none; margin: 0; padding: 0; }
.field li a { display: block; padding: 4px 0; color: var(--ink-2); text-decoration: none; font-size: .93rem; }
.field li a:hover { color: var(--link-hover); text-decoration: underline; }
@media (max-width: 1000px) { .fields { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .fields { grid-template-columns: 1fr; } }
.how-steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0 28px; }
.how-steps li { padding: 18px 0; border-bottom: 1px solid var(--line); }
.how-k { display: block; font: 600 .78rem/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 10px; }
.how-steps p { font-size: .94rem; color: var(--ink-2); margin: 0; }
@media (max-width: 1000px) { .how-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .how-steps { grid-template-columns: 1fr; } }
.learn-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 40px; }
.learn-list li { padding: 14px 0; border-bottom: 1px solid var(--line); display: grid; gap: 2px; }
.learn-list a { font-weight: 600; text-decoration: none; }
.learn-list a:hover { text-decoration: underline; }
.learn-list span { font-size: .93rem; color: var(--ink-2); }
.learn-list-lg { grid-template-columns: 1fr; border-top: 1px solid var(--line); }
@media (max-width: 760px) { .learn-list { grid-template-columns: 1fr; } }

/* ---------- search ---------- */
.suggest { position: absolute; left: 0; right: 0; top: calc(100% + 4px); z-index: 20; background: var(--bg); border: 1px solid var(--line-strong); border-radius: var(--r); box-shadow: 0 8px 24px rgba(14, 17, 22, .08); list-style: none; margin: 0; padding: 4px; max-height: 360px; overflow-y: auto; }
.suggest a { display: grid; grid-template-columns: 1fr auto; gap: 2px 10px; padding: 8px 10px; text-decoration: none; border-radius: 3px; }
.suggest a:hover, .suggest [aria-selected=true] a { background: var(--bg-2); }
.suggest .s-t { font-weight: 600; font-size: .94rem; }
.suggest .s-c { font: 500 .68rem/1.9 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.suggest .s-d { grid-column: 1 / -1; font-size: .82rem; color: var(--ink-2); }
.suggest .s-none { padding: 10px; font-size: .9rem; color: var(--muted); }
.hsearch .suggest { width: 360px; left: auto; }
.filter { margin: 0 0 28px; max-width: 620px; }
.filter label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 6px; }
.filter-row { display: flex; gap: 12px; align-items: center; }
.filter-count { font: 400 .82rem/1 var(--mono); color: var(--muted); white-space: nowrap; }
.lib-cat { margin-bottom: 36px; }
.lib-cat h2 { font-size: 1.1rem; margin-bottom: 8px; }
.lib-cat h2 a { text-decoration: none; }
.lib-cat h2 a:hover { text-decoration: underline; }
.lib-empty { padding: 20px 0; color: var(--ink-2); }

/* ---------- category ---------- */
.cat-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 40px; }
.cat-body { max-width: 72ch; }
.other-fields { margin-top: 48px; }
.other-fields h2 { font-size: 1rem; }

/* ---------- models ---------- */
.models-intro { margin-bottom: 40px; }
.pkg-list h3 { margin-top: 28px; }
.pkg-table td:first-child { white-space: nowrap; }
@media (max-width: 640px) { .pkg-table td:first-child { white-space: normal; word-break: break-all; } .pkg-table td, .pkg-table th { padding-left: 6px; padding-right: 6px; } }
@media (max-width: 640px) { .pkg-table th:nth-child(3), .pkg-table td:nth-child(3) { display: none; } .pkg-table td:first-child code { font-size: .74rem; } }

/* ---------- article / 404 ---------- */
.article .page-head { max-width: none; }
.nf { padding-top: 48px; }
.nf h2 { margin-top: 40px; font-size: 1.1rem; }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; } }
@media print { .site-header, .site-footer, .lab, .doc-rail { display: none; } }
/* canvas aspect ratios (no inline styles: CSP style-src 'self') */
.ar-1 { aspect-ratio: 1; } .ar-4-3 { aspect-ratio: 4 / 3; } .ar-3-2 { aspect-ratio: 3 / 2; } .ar-16-10 { aspect-ratio: 16 / 10; } .ar-16-9 { aspect-ratio: 16 / 9; } .ar-2-1 { aspect-ratio: 2 / 1; } .ar-5-2 { aspect-ratio: 5 / 2; } .ar-3-1 { aspect-ratio: 3 / 1; } .ar-5-4 { aspect-ratio: 5 / 4; } .ar-4-1 { aspect-ratio: 4 / 1; }
.sw-dash.sw-d4 { background: repeating-linear-gradient(90deg, var(--d4) 0 3px, transparent 3px 6px) !important; }
.sw-dash.sw-d5 { background: repeating-linear-gradient(90deg, var(--d5) 0 3px, transparent 3px 6px) !important; }
.sw-dash.sw-d6 { background: repeating-linear-gradient(90deg, var(--d6) 0 3px, transparent 3px 6px) !important; }