/*
 * The Brief: the article design system from wilcoguide.com
 * (wilco-guide components/articles/ArticleView.module.css, PR #408), adopted
 * for every lightbreak site from 2026-09-13. Instrument Sans for headlines and
 * interface, Newsreader for reading, JetBrains Mono for labels and code, cool
 * oklch neutrals on white, one rust accent.
 */
:root {
  --brief-sans: "Instrument Sans", Inter, system-ui, sans-serif;
  --brief-serif: "Newsreader", Georgia, serif;
  --brief-mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --brief-ink: oklch(0.15 0.01 260);
  --brief-body: oklch(0.2 0.01 260);
  --brief-muted: oklch(0.5 0.01 260);
  --brief-soft: oklch(0.58 0.01 260);
  --brief-light: oklch(0.97 0.006 260);
  --brief-rule: oklch(0.9 0.005 260);
  --brief-rule-dark: oklch(0.85 0.005 260);
  --brief-rust: oklch(0.53 0.13 45);
  --brief-rust-wash: oklch(0.58 0.13 45 / 10%);
  --brief-rust-ink: oklch(0.28 0.07 42);
  --brief-gold: oklch(0.82 0.13 72);
  --brief-max: 1300px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: #fff; color: var(--brief-ink); font-family: var(--brief-sans); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--brief-rust); outline-offset: 3px; }
.wrap { box-sizing: border-box; margin: 0 auto; max-width: var(--brief-max); padding: 0 40px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; background: var(--brief-ink); color: #fff; padding: 8px 12px; z-index: 10; }

/* Site bar */
.sitebar { border-bottom: 1px solid var(--brief-rule); }
.sitebar .wrap { align-items: center; display: flex; gap: 28px; height: 68px; }
.sitebar img { height: 34px; width: auto; }
.sitebar nav { display: flex; gap: 22px; margin-left: auto; }
.sitebar nav a { color: var(--brief-ink); font: 600 13.5px/1 var(--brief-sans); text-decoration: none; }
.sitebar nav a[aria-current="page"] { color: var(--brief-rust); }
.sitebar .cta { background: var(--brief-ink); border-radius: 2px; color: #fff; font: 700 10px/1 var(--brief-mono); letter-spacing: 0.12em; padding: 12px 16px; text-decoration: none; text-transform: uppercase; }

/* Header */
.header { padding-top: 44px; }
.crumbs { align-items: center; color: oklch(0.55 0.01 260); display: flex; flex-wrap: wrap; font: 700 10px/1.5 var(--brief-mono); gap: 8px; letter-spacing: 0.12em; margin: 0 0 26px; padding: 0; list-style: none; text-transform: uppercase; }
.crumbs li:not(:last-child)::after { color: oklch(0.68 0.01 260); content: "/"; margin-left: 8px; }
.crumbs a { color: inherit; text-decoration: none; }
.crumbs b { color: var(--brief-rust); }
.header h1 { font: 700 clamp(40px, 4.6vw, 62px)/1.02 var(--brief-sans); letter-spacing: -0.035em; margin: 0 0 18px; max-width: 24ch; text-wrap: balance; }
.dek { color: oklch(0.35 0.01 260); font: 400 23px/1.45 var(--brief-serif); margin: 0 0 30px; max-width: 62ch; text-wrap: pretty; }
.specs { background: var(--brief-rule); display: grid; gap: 1px; grid-template-columns: repeat(5, minmax(0, 1fr)); margin: 0; border: 1px solid var(--brief-rule); }
.specs > div { background: #fff; padding: 14px 18px; }
.specs dt, .label { color: var(--brief-soft); font: 700 8.5px/1.4 var(--brief-mono); letter-spacing: 0.18em; margin-bottom: 6px; text-transform: uppercase; }
.specs dd { font-size: 13.5px; font-weight: 600; line-height: 1.3; margin: 0; }
.specs small { color: var(--brief-muted); display: block; font-size: 12px; font-weight: 400; margin-top: 2px; }

/* Short version */
.short { display: grid; grid-template-columns: 200px minmax(0, 1fr); margin-top: 32px; background: var(--brief-light); border-radius: 2px; }
.short > div { padding: 28px 0 28px 30px; }
.short h2 { color: var(--brief-rust); font: 800 9.5px/1.6 var(--brief-mono); letter-spacing: 0.18em; margin: 0; text-transform: uppercase; }
.short > div p { color: oklch(0.55 0.01 260); font: 600 10px/1.5 var(--brief-sans); letter-spacing: 0.1em; margin: 7px 0 0; text-transform: uppercase; }
.short ol { list-style: none; margin: 0; padding: 28px 30px 28px 0; display: grid; gap: 14px; }
.short li { display: grid; gap: 12px; grid-template-columns: auto minmax(0, 1fr); }
.short li span { color: var(--brief-rust); font: 700 10px/1.5 var(--brief-mono); padding-top: 6px; }
.short li p { font: 400 17.5px/1.5 var(--brief-serif); margin: 0; }

/* Body + rail */
.grid { align-items: start; display: grid; gap: 64px; grid-template-columns: minmax(0, 1fr) 316px; padding-bottom: 24px; padding-top: 48px; }
.body { color: var(--brief-body); counter-reset: brief-section; font: 400 19.5px/1.68 var(--brief-serif); min-width: 0; }
.body > p, .body section > p { margin: 0 0 24px; max-width: 66ch; text-wrap: pretty; }
.body .lead { color: var(--brief-ink); font-size: 22px; line-height: 1.55; }
.body h2 { align-items: start; border-top: 1px solid var(--brief-ink); counter-increment: brief-section; display: grid; font: 700 29px/1.14 var(--brief-sans); grid-template-columns: 48px minmax(0, 1fr); letter-spacing: -0.026em; margin: 50px 0 18px; padding-top: 14px; text-wrap: balance; color: var(--brief-ink); }
.body h2::before { color: var(--brief-rust); content: counter(brief-section, decimal-leading-zero); font: 700 11px/1.5 var(--brief-mono); letter-spacing: 0.1em; padding-top: 5px; }
.body h3 { font: 700 21px/1.25 var(--brief-sans); letter-spacing: -0.018em; margin: 30px 0 10px; color: var(--brief-ink); }
.body a { color: var(--brief-rust); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.body ul { margin: 0 0 24px 1.2em; padding: 0; }
.body li { margin-bottom: 7px; }
.body code, .mono { font-family: var(--brief-mono); font-size: 0.78em; background: var(--brief-light); padding: 1px 5px; border-radius: 2px; }
.quote { background: var(--brief-rust-wash); border-radius: 2px; color: var(--brief-rust-ink); font: 650 30px/1.22 var(--brief-sans); letter-spacing: -0.028em; margin: 46px 0; padding: 34px 36px; text-wrap: balance; }
.quote small { color: var(--brief-rust); display: block; font: 700 9.5px/1.5 var(--brief-mono); letter-spacing: 0.12em; margin-top: 18px; text-transform: uppercase; }

.ability { border-top: 1px solid var(--brief-rule); display: grid; gap: 24px; grid-template-columns: 180px minmax(0, 1fr); padding: 18px 0; }
.ability h3 { font: 700 16px/1.3 var(--brief-sans); margin: 0; }
.ability ul { list-style: none; margin: 0; }
.ability li { font: 400 16.5px/1.5 var(--brief-serif); margin: 0 0 8px; }
.ability li code { color: var(--brief-muted); background: none; padding: 0; font-size: 11.5px; display: block; }

.data { background: var(--brief-ink); color: #fff; margin: 46px 0 0; }
.data header { padding: 28px 32px 24px; display: grid; gap: 36px; grid-template-columns: minmax(0, 1fr) minmax(220px, 0.85fr); align-items: end; }
.data header span { color: var(--brief-gold); display: block; font: 700 9px/1.5 var(--brief-mono); letter-spacing: 0.16em; margin-bottom: 8px; text-transform: uppercase; }
.data header h2 { all: unset; color: #fff; font: 700 27px/1.1 var(--brief-sans); letter-spacing: -0.028em; display: block; }
.data header p { color: rgb(255 255 255 / 70%); font: 400 15px/1.5 var(--brief-serif); margin: 0; }
.data dl { background: rgb(255 255 255 / 15%); display: grid; gap: 1px; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0; }
.data dl > div { background: var(--brief-ink); padding: 24px 20px; }
.data dd { color: oklch(0.72 0.16 45); font: 750 34px/1 var(--brief-sans); letter-spacing: -0.04em; margin: 0 0 8px; }
.data dt { color: #fff; font: 700 10px/1.35 var(--brief-mono); letter-spacing: 0.1em; text-transform: uppercase; }
.data small { color: rgb(255 255 255 / 55%); display: block; font: 400 11px/1.4 var(--brief-sans); margin-top: 6px; letter-spacing: 0; text-transform: none; }

.steps { list-style: none; margin: 0 0 28px; padding: 0; display: grid; gap: 0; border-top: 1px solid var(--brief-rule); }
.steps li { border-bottom: 1px solid var(--brief-rule); display: grid; grid-template-columns: 48px minmax(0, 1fr); padding: 16px 0; margin: 0; }
.steps li > span { color: var(--brief-rust); font: 700 11px/1.9 var(--brief-mono); }
.steps li p { margin: 0; font: 400 18px/1.55 var(--brief-serif); }

details.setup { border: 1px solid var(--brief-rule-dark); margin: 0 0 -1px; }
details.setup summary { cursor: pointer; display: flex; gap: 12px; align-items: baseline; font: 700 15px/1.3 var(--brief-sans); list-style: none; padding: 15px 18px; }
details.setup summary::-webkit-details-marker { display: none; }
details.setup summary small { color: var(--brief-muted); font: 400 13px/1.3 var(--brief-sans); }
details.setup summary::after { content: "+"; font-family: var(--brief-mono); color: var(--brief-rust); margin-left: auto; }
details.setup[open] summary::after { content: "\2212"; }
details.setup > div { padding: 0 18px 18px; font: 400 16px/1.5 var(--brief-serif); }
details.setup > div p { margin: 0 0 10px; }
pre { background: var(--brief-ink); border-radius: 2px; color: oklch(0.93 0.01 260); font: 400 12.5px/1.6 var(--brief-mono); margin: 0 0 14px; overflow-x: auto; padding: 16px 18px; }
pre code { background: none; padding: 0; font-size: inherit; color: inherit; }

.faq { border-top: 1px solid var(--brief-ink); margin: 0; }
.faq > div { border-bottom: 1px solid var(--brief-rule); display: grid; gap: 24px; grid-template-columns: minmax(180px, 0.8fr) minmax(0, 1.4fr); padding: 16px 0; }
.faq dt { font: 700 15px/1.4 var(--brief-sans); }
.faq dd { margin: 0; color: var(--brief-muted); font: 400 16px/1.55 var(--brief-serif); }

.endmark { display: flex; gap: 4px; margin: 54px 0 0; }
.endmark i { background: var(--brief-rust); display: block; height: 5px; width: 24px; }
.endmark i:nth-child(2) { background: var(--brief-ink); }
.endmark i:nth-child(3) { background: var(--brief-rule-dark); }

.rail { display: flex; flex-direction: column; gap: 2px; position: sticky; top: 24px; }
.railcard { background: var(--brief-light); border-radius: 2px; padding: 20px; }
.railcard h2 { font: 700 16px/1.25 var(--brief-sans); letter-spacing: -0.018em; margin: 0 0 10px; }
.railcard p { color: oklch(0.38 0.01 260); font: 400 14.5px/1.5 var(--brief-serif); margin: 0 0 12px; }
.railcard code { display: block; font: 500 11.5px/1.5 var(--brief-mono); background: #fff; border: 1px solid var(--brief-rule); padding: 8px 10px; overflow-wrap: anywhere; margin: 0 0 10px; }
.railcard .button, .button { background: var(--brief-ink); border-radius: 2px; color: #fff; display: block; font: 700 10px/1.4 var(--brief-mono); letter-spacing: 0.12em; padding: 12px 16px; text-align: center; text-decoration: none; text-transform: uppercase; }
.railcard .button + .button { margin-top: 2px; background: #fff; color: var(--brief-ink); border: 1px solid var(--brief-rule-dark); }
.railcard ul { list-style: none; margin: 0; padding: 0; }
.railcard li a { border-top: 1px solid var(--brief-rule); color: var(--brief-ink); display: block; font: 600 13.5px/1.3 var(--brief-sans); padding: 10px 0; text-decoration: none; }
.railcard li a span { color: var(--brief-rust); font: 700 10px/1 var(--brief-mono); margin-right: 8px; }

/* Machine section */
.machine { background: var(--brief-light); border-top: 1px solid var(--brief-ink); margin-top: 64px; padding: 52px 0 64px; }
.machine-head { display: grid; grid-template-columns: 48px minmax(0, 1fr) auto; align-items: baseline; border-top: 1px solid var(--brief-ink); padding-top: 12px; margin-bottom: 8px; }
.machine-head > span { color: var(--brief-rust); font: 700 11px/1.4 var(--brief-mono); }
.machine-head h2 { font: 700 34px/1.1 var(--brief-sans); letter-spacing: -0.03em; margin: 0; }
.machine-head p { color: var(--brief-soft); font: 400 9px/1.4 var(--brief-mono); letter-spacing: 0.14em; margin: 0; text-transform: uppercase; }
.machine .intro { color: var(--brief-muted); font: 400 17px/1.55 var(--brief-serif); margin: 10px 0 30px 48px; max-width: 70ch; }
.machine h3 { font: 700 20px/1.25 var(--brief-sans); letter-spacing: -0.018em; margin: 44px 0 12px; }
.machine h3 .mono { font-size: 11px; color: var(--brief-rust); background: none; margin-right: 10px; letter-spacing: 0.1em; }
.kv { background: var(--brief-rule); border: 1px solid var(--brief-rule); display: grid; gap: 1px; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 0; }
.kv > div { background: #fff; padding: 14px 18px; min-width: 0; }
.kv dd { font: 500 13px/1.5 var(--brief-mono); margin: 0; overflow-wrap: anywhere; }
.scroll { overflow-x: auto; background: #fff; border: 1px solid var(--brief-rule); }
table { border-collapse: collapse; width: 100%; min-width: 760px; font-family: var(--brief-sans); font-size: 13.5px; }
th { background: var(--brief-ink); color: #fff; font: 700 9px/1.4 var(--brief-mono); letter-spacing: 0.14em; padding: 10px 14px; text-align: left; text-transform: uppercase; white-space: nowrap; }
td { border-top: 1px solid var(--brief-rule); padding: 11px 14px; vertical-align: top; line-height: 1.45; }
td:first-child { font: 600 12.5px/1.45 var(--brief-mono); white-space: nowrap; color: var(--brief-ink); }
td .req, td .opt { display: inline-block; margin: 0 10px 2px 0; font: 600 11.5px/1.5 var(--brief-mono); white-space: nowrap; }
td .req { color: var(--brief-rust); }
td .opt { color: var(--brief-muted); font-weight: 400; }
tr.group td { background: var(--brief-light); color: var(--brief-rust); font: 700 9px/1.4 var(--brief-mono); letter-spacing: 0.14em; text-transform: uppercase; }
.machine ol.flow { counter-reset: flow; list-style: none; margin: 0; padding: 0; background: #fff; border: 1px solid var(--brief-rule); }
.machine ol.flow li { counter-increment: flow; display: grid; grid-template-columns: 48px minmax(0, 1fr); padding: 12px 18px 12px 0; border-top: 1px solid var(--brief-rule); font: 400 15.5px/1.5 var(--brief-sans); }
.machine ol.flow li:first-child { border-top: 0; }
.machine ol.flow li::before { content: counter(flow, decimal-leading-zero); color: var(--brief-rust); font: 700 11px/1.9 var(--brief-mono); text-align: center; }
.machine ol.flow code { font: 500 12px/1.4 var(--brief-mono); background: var(--brief-light); padding: 1px 5px; }
.machine p.note { color: var(--brief-muted); font: 400 15px/1.55 var(--brief-serif); max-width: 72ch; margin: 12px 0 0; }
.machine p.note code { font: 500 12px/1.4 var(--brief-mono); background: #fff; padding: 1px 5px; }

.sitefoot { border-top: 1px solid var(--brief-ink); padding: 24px 0 40px; }
.sitefoot .wrap { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; color: var(--brief-muted); font: 400 10px/1.5 var(--brief-mono); letter-spacing: 0.08em; text-transform: uppercase; }
.sitefoot a { color: var(--brief-ink); text-underline-offset: 3px; }
.sitefoot span:last-child { margin-left: auto; }

@media (max-width: 1080px) {
  .specs { grid-template-columns: 1fr 1fr; }
  .grid { gap: 34px; grid-template-columns: minmax(0, 1fr); }
  .rail { position: static; }
  .data dl { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 700px) {
  .wrap { padding: 0 20px; }
  .sitebar nav { display: none; }
  .sitebar .cta { margin-left: auto; }
  .header { padding-top: 28px; }
  .header h1 { font-size: 38px; }
  .dek { font-size: 20px; }
  .specs { grid-template-columns: 1fr; }
  .short { grid-template-columns: 1fr; }
  .short > div { padding: 24px 24px 0; }
  .short ol { padding: 14px 24px 24px; }
  .body { font-size: 18px; }
  .body .lead { font-size: 20px; }
  .body h2 { font-size: 26px; grid-template-columns: 1fr; }
  .body h2::before { margin-bottom: 5px; }
  .ability { grid-template-columns: 1fr; gap: 8px; }
  .quote { font-size: 24px; padding: 26px 22px; }
  .data header { grid-template-columns: 1fr; padding: 24px; gap: 12px; }
  .faq > div { grid-template-columns: 1fr; gap: 4px; }
  .machine-head { grid-template-columns: 34px minmax(0, 1fr); }
  .machine-head p { display: none; }
  .machine .intro { margin-left: 0; }
  .kv { grid-template-columns: 1fr; }
  .sitefoot span:last-child { margin-left: 0; }
}
.machine a { color: var(--brief-rust); text-decoration-thickness: 1px; text-underline-offset: 3px; }