@font-face { font-family: "Inter"; font-weight: 400 700; font-display: swap; src: url(/fonts/inter.woff2) format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-weight: 400 500; font-display: swap; src: url(/fonts/jetbrains-mono.woff2) format("woff2"); }

:root {
  --paper: #f3f0e8;
  --ink: #1b1b1a;
  --muted: #5d5b56;
  --line: #1b1b1a;
  --hair: rgba(27, 27, 26, .14);
  --grid: rgba(27, 27, 26, .045);
  --orange: #f9a70d;
  --orange-ink: #a86a00; /* orange dark enough for text on paper (AA) */
  --sub: #3a3a3a;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --sans: "Inter", system-ui, -apple-system, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0f1318;
    --ink: #e9e6df;
    --muted: #9a978f;
    --line: #e9e6df;
    --hair: rgba(233, 230, 223, .16);
    --grid: rgba(233, 230, 223, .04);
    --orange-ink: #f9a70d;
    --sub: #d6d6d6;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--ink);
  font: 400 17px/1.6 var(--sans);
  padding: 16px;
}
a { color: inherit; text-decoration-color: var(--orange); text-underline-offset: 3px; text-decoration-thickness: 1.5px; }
a:hover { color: var(--orange-ink); }
:focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; }
.mono { font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }

/* The drawing sheet: double border with zone markers on the edges */
.sheet {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  border: 1.5px solid var(--line);
  outline: 1px solid var(--line);
  outline-offset: 6px;
  margin-top: 6px;
  margin-bottom: 6px;
}
.zones { display: none; }
@media (min-width: 900px) {
  body { padding: 28px; }
  .zones { display: flex; position: absolute; justify-content: space-around; color: var(--muted); font: 10px var(--mono); pointer-events: none; }
  .zones.top { top: -22px; left: 0; right: 0; }
  .zones.left { flex-direction: column; left: -21px; top: 0; bottom: 0; }
}

header.bar {
  display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between;
  padding: 18px 24px; border-bottom: 1.5px solid var(--line);
}
.wordmark { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.wordmark svg { width: 34px; height: 34px; }
.wordmark b { display: block; color: var(--orange); font-weight: 600; letter-spacing: .32em; font-size: 15px; line-height: 1.1; }
.wordmark span { display: block; color: var(--sub); font-weight: 500; font-size: 12.5px; letter-spacing: .02em; }
nav ul { display: flex; flex-wrap: wrap; gap: 4px 20px; margin: 0; padding: 0; list-style: none; }
nav a { text-decoration: none; font: 12px var(--mono); letter-spacing: .06em; text-transform: uppercase; }
nav a i { font-style: normal; color: var(--orange-ink); margin-right: 6px; }

section { padding: 40px 24px; border-bottom: 1px solid var(--hair); }
section:last-of-type { border-bottom: 0; }
.label { display: flex; gap: 12px; align-items: baseline; margin: 0 0 24px; color: var(--muted); }
.label::after { content: ""; flex: 1; border-bottom: 1px dashed var(--hair); transform: translateY(-3px); }
.label em { font-style: normal; color: var(--orange-ink); }

/* Hero */
.hero { display: grid; gap: 32px; align-items: center; padding-top: 48px; padding-bottom: 56px; }
@media (min-width: 900px) { .hero { grid-template-columns: 1.1fr .9fr; padding: 72px 48px; } section { padding: 56px 48px; } }
h1 { font-size: clamp(38px, 6.4vw, 72px); line-height: 1.02; letter-spacing: -.035em; font-weight: 650; margin: 0 0 24px; }
h1 .o { color: var(--orange-ink); }
.lede { font-size: 19px; color: var(--sub); max-width: 34em; margin: 0 0 28px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-block; padding: 12px 18px; border: 1.5px solid var(--line); text-decoration: none;
  font: 500 13px var(--mono); letter-spacing: .06em; text-transform: uppercase;
}
.btn.primary { background: var(--orange); border-color: var(--orange); color: #1b1b1a; }
.btn:hover { transform: translate(-2px, -2px); box-shadow: 2px 2px 0 var(--line); color: inherit; }
.btn.primary:hover { color: #1b1b1a; }

figure.drawing { margin: 0; position: relative; }
figure.drawing svg { width: 100%; height: auto; max-width: 460px; display: block; margin: 0 auto; overflow: visible; }
figure.drawing figcaption { text-align: center; color: var(--muted); margin-top: 12px; }

/* Detail cards */
.grid { display: grid; gap: 1px; background: var(--hair); border: 1px solid var(--hair); }
@media (min-width: 760px) { .grid.two { grid-template-columns: 1fr 1fr; } .grid.three { grid-template-columns: repeat(3, 1fr); } }
.cell { background: var(--paper); padding: 24px; }
.cell h2 { margin: 6px 0 10px; font-size: 22px; letter-spacing: -.015em; font-weight: 620; }
.cell p { margin: 0 0 12px; color: var(--sub); }
.cell .mono { color: var(--muted); }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; border: 2px solid; margin-right: 8px; vertical-align: 1px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 14px 0 0; padding: 0; list-style: none; }
.tags li { font: 11.5px var(--mono); border: 1px solid var(--hair); padding: 3px 8px; }

.product { display: grid; gap: 24px; }
@media (min-width: 760px) { .product { grid-template-columns: 1fr 1.4fr; } }
.product h2 { font-size: 32px; margin: 4px 0 8px; }
.spec { width: 100%; border-collapse: collapse; font-size: 15px; }
.spec th, .spec td { text-align: left; vertical-align: top; padding: 10px 12px; border: 1px solid var(--hair); }
.spec th { font: 500 11.5px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); width: 34%; background: var(--grid); }

/* Title block footer */
footer.titleblock { border-top: 1.5px solid var(--line); display: grid; grid-template-columns: 1fr 1fr; font-size: 14px; }
footer.titleblock > div { padding: 12px 16px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
footer.titleblock .k { display: block; font: 10px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 2px; }
footer.titleblock .wide { grid-column: 1 / -1; }
footer.titleblock > div:last-child { border-bottom: 0; }
@media (min-width: 900px) {
  footer.titleblock { grid-template-columns: 2fr 1.2fr 1fr .6fr .6fr; }
  footer.titleblock .wide { grid-column: auto; }
  footer.titleblock > div { border-bottom: 0; }
  footer.titleblock > div:nth-child(5) { border-right: 0; }
  footer.titleblock .legal { grid-column: 1 / -1; border-top: 1px solid var(--line); border-right: 0; }
}
footer .legal { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; }
footer .legal nav { display: flex; gap: 20px; }

/* Legal documents */
.doc { max-width: 760px; }
.doc h1 { font-size: clamp(34px, 5vw, 52px); }
.doc h2 { font-size: 20px; margin: 40px 0 10px; letter-spacing: -.01em; }
.doc h2 span { font: 500 13px var(--mono); color: var(--orange-ink); margin-right: 10px; }
.doc p, .doc li { color: var(--sub); }
.doc .meta { color: var(--muted); margin-bottom: 32px; }

.lang { font: 12px var(--mono); letter-spacing: .06em; border: 1px solid var(--hair); padding: 4px 8px; text-decoration: none; }
.steps { counter-reset: s; list-style: none; margin: 0; padding: 0; display: grid; gap: 1px; background: var(--hair); border: 1px solid var(--hair); }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.steps li { counter-increment: s; background: var(--paper); padding: 22px; color: var(--sub); font-size: 15.5px; }
.steps li::before { content: "0" counter(s); display: block; font: 500 12px var(--mono); color: var(--orange-ink); margin-bottom: 10px; }
.steps b { display: block; color: var(--ink); font-size: 18px; margin-bottom: 6px; }
.note { margin-top: 20px; color: var(--muted); font-size: 15px; }
h2.big { font-size: clamp(24px, 4vw, 40px); letter-spacing: -.02em; margin: 0 0 12px; font-weight: 620; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; background: var(--paper); padding: 8px 12px; z-index: 9; }