@font-face {
  font-family: "Overpass";
  src: url("/assets/fonts/overpass.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --concrete: #E3E6E8;
  --ink: #1B2430;
  --asphalt: #2A3038;
  --amber: #F2B705;
  --signal: #D33A2C;
  --rule: #8A939B;
  --ink-soft: #46505B;
  --gutter: clamp(20px, 4vw, 56px);
  --measure: 34em;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--concrete);
  color: var(--ink);
  font: 400 1.0625rem/1.6 "Overpass", system-ui, sans-serif;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { margin: 0; font-weight: 800; line-height: 1.08; letter-spacing: -0.01em; }
p { margin: 0; }

a { color: inherit; text-underline-offset: 0.2em; }

:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; border-radius: 2px; }

.skip {
  position: absolute;
  left: 12px;
  top: -48px;
  padding: 8px 12px;
  background: var(--ink);
  color: var(--concrete);
}
.skip:focus { top: 12px; }

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 14px var(--gutter);
  background: var(--concrete);
  border-bottom: 1px solid transparent;
  transition: border-color 160ms ease-out, box-shadow 160ms ease-out;
}
.top[data-stuck] { border-bottom-color: #C3C9CE; box-shadow: 0 6px 16px -12px rgba(27, 36, 48, 0.35); }
main [id] { scroll-margin-top: 72px; }
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.375rem;
  letter-spacing: 0.02em;
  text-decoration: none;
}
.top nav { display: flex; gap: 24px; margin-left: auto; }
.top nav a { text-decoration: none; color: var(--ink-soft); font-weight: 600; }
.top nav a:hover { color: var(--ink); text-decoration: underline; }

.button {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 12px 22px 10px;
  border: 2px solid var(--ink);
  border-radius: 6px;
  background: var(--ink);
  color: var(--concrete);
  font-weight: 700;
  text-decoration: none;
}
.button:hover { background: var(--asphalt); }
.button-quiet { background: transparent; color: var(--ink); }
.button-quiet:hover { background: #D5D9DD; }
.button-small { min-height: 40px; padding: 8px 16px 6px; }

main > section { padding: clamp(56px, 9vw, 120px) var(--gutter); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(24px, 4vw, 64px);
  align-items: center;
  padding-top: clamp(24px, 5vw, 64px);
  padding-bottom: clamp(32px, 5vw, 72px);
}
.version { color: var(--ink-soft); font-weight: 600; margin-bottom: 18px; }
.hero h1 { font-size: clamp(2.5rem, 5.2vw, 4.5rem); font-weight: 900; line-height: 1; letter-spacing: -0.02em; }
.lede { margin-top: 24px; max-width: var(--measure); font-size: 1.1875rem; color: var(--ink-soft); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.bench { margin: 0; }
.bench-art:focus-visible { outline-offset: 8px; }
.bench.iso[data-theme="light"] {
  --anatomy-paper: var(--concrete);
  --anatomy-face: #EEF0F2;
  --anatomy-top: #EFF1F3;
  --anatomy-shade-0: #C9CED3;
  --anatomy-shade-1: #D1D6DA;
  --anatomy-shade-2: #D8DCE0;
  --anatomy-shade-3: #DEE1E4;
  --anatomy-lit-top: var(--amber);
  --anatomy-lit-shade: #DCA503;
  --anatomy-hi: var(--ink);
  --anatomy-mid: #7A848E;
  --anatomy-lo: #A3AAB1;
  --anatomy-faint: #C3C9CE;
  --anatomy-lit: var(--ink);
  --anatomy-halo: #66707A;
  --anatomy-halo-opacity: .34;
  --anatomy-dot: var(--asphalt);
}
.bench-art { touch-action: pan-y; cursor: ew-resize; }
.bench-svg { width: 100%; height: auto; }
.bench .iso-face-text { font-family: "Overpass", sans-serif; font-weight: 800; letter-spacing: 0.06em; }
.bench .iso-lens { fill: var(--asphalt); stroke: none; }
.fcw-lamp { fill: var(--anatomy-lo); transition: fill 160ms ease-out; }
.bench[data-fcw="on"] .fcw-lamp { fill: var(--signal); }

.readout {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin: 8px 0 0;
  border-top: 2px solid var(--ink);
}
.readout div { padding: 10px 12px 0 0; }
.readout dt { font-size: 0.8125rem; color: var(--ink-soft); }
.readout dd { margin: 2px 0 0; font-size: 1.375rem; font-weight: 800; white-space: nowrap; }
.bench[data-fcw="on"] .readout-fcw dd { color: var(--signal); }
.bench figcaption { margin-top: 14px; max-width: 46em; font-size: 0.875rem; color: var(--ink-soft); }

h2 { font-size: clamp(2rem, 3.6vw, 3rem); }
.section-lede { margin-top: 16px; max-width: var(--measure); font-size: 1.1875rem; color: var(--ink-soft); }

.finds { list-style: none; margin: 48px 0 0; padding: 0; border-top: 2px solid var(--ink); }
.finds li {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) minmax(0, 14rem);
  gap: 24px;
  align-items: start;
  padding: 28px 0;
  border-bottom: 1px solid var(--rule);
}
.finds h3 { font-size: 1.5rem; }
.finds p { margin-top: 8px; max-width: var(--measure); }
.finds .spec { margin-top: 0; font-size: 1.5rem; font-weight: 800; text-align: right; }

.pict { width: 48px; height: 48px; }
.pict-line { fill: none; stroke: var(--ink); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.pict-faint { fill: none; stroke: var(--rule); stroke-width: 2.5; stroke-linecap: round; }
.pict-mark { fill: var(--amber); stroke: var(--ink); stroke-width: 2; stroke-linejoin: round; }
.pict-sign { fill: #fff; stroke: var(--signal); stroke-width: 5; }
.pict-text { fill: var(--ink); font: 900 14px "Overpass", sans-serif; }

.functions { border-top: 1px solid var(--rule); }
.fn { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(20px, 3vw, 48px); margin: 48px 0 0; }
.fn dt { font-size: clamp(3rem, 6vw, 5rem); font-weight: 900; line-height: 1; letter-spacing: 0.01em; }
.fn dd { margin: 12px 0 0; max-width: 22em; }
.fn strong { font-weight: 700; }

.studio {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(24px, 4vw, 64px);
  align-items: center;
  background: var(--asphalt);
  color: var(--concrete);
}
.studio p { margin-top: 16px; max-width: var(--measure); font-size: 1.1875rem; color: #C2C8CE; }
.studio-shot { margin: 0; }
.studio-shot img { display: block; width: 100%; height: auto; border-radius: 8px; }
.studio-shot figcaption { margin-top: 10px; font-size: 0.875rem; color: #9AA3AB; }

.flow {
  list-style: none;
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0;
  margin: 48px 0 0;
  padding: 0;
}
.flow li {
  counter-increment: step;
  position: relative;
  padding: 56px 20px 0 0;
  border-top: 2px solid var(--ink);
}
.flow li::before {
  content: counter(step);
  position: absolute;
  top: -19px;
  left: 0;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  padding-top: 3px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--concrete);
  font-weight: 800;
}
.flow h3 { font-size: 1.25rem; }
.flow p { margin-top: 8px; }

.practice { margin-top: 64px; padding-top: 28px; border-top: 1px solid var(--rule); display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 24px; }
.practice h3 { font-size: 1.5rem; }
.practice ul { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 32px; }
.practice li { padding-left: 22px; position: relative; }
.practice li::before { content: ""; position: absolute; left: 0; top: 0.5em; width: 10px; height: 6px; border-radius: 1px; background: var(--amber); outline: 1.5px solid var(--ink); }

.status { border-top: 1px solid var(--rule); }
.status-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(20px, 3vw, 48px); margin-top: 40px; }
.status-grid h3 { font-size: 1.25rem; padding-bottom: 10px; border-bottom: 2px solid var(--ink); }
.status-grid p { margin-top: 12px; max-width: 24em; }

.join { background: var(--amber); }
.join p { margin-top: 16px; max-width: var(--measure); font-size: 1.1875rem; }
.join .button { margin-top: 32px; }

.foot { background: var(--ink); color: #C2C8CE; font-size: 0.9375rem; padding: 64px var(--gutter) 32px; }
.foot a { color: var(--concrete); text-decoration: none; }
.foot a:hover { text-decoration: underline; }
.foot :focus-visible { outline-color: var(--amber); }
.foot-main { display: grid; grid-template-columns: minmax(0, 5fr) repeat(3, minmax(0, 2fr)); gap: 32px clamp(24px, 4vw, 64px); }
.foot-brand .brand { color: var(--concrete); text-decoration: none; }
.foot-brand p { margin-top: 16px; max-width: 24em; }
.foot h2 { font-size: 0.9375rem; font-weight: 700; color: var(--concrete); letter-spacing: 0; }
.foot ul { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 8px; }
.foot-base { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; margin-top: 56px; padding-top: 20px; border-top: 1px solid #3A424C; color: #9AA3AB; font-size: 0.875rem; }

@media (max-width: 960px) {
  .hero, .studio, .practice { grid-template-columns: minmax(0, 1fr); }
  .foot-main { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .foot-brand { grid-column: 1 / -1; }
  .flow { grid-template-columns: minmax(0, 1fr); gap: 0; border-left: 2px solid var(--ink); margin-left: 18px; }
  .flow li { border-top: 0; padding: 0 0 32px 36px; }
  .flow li::before { top: -4px; left: -19px; }
  .fn, .status-grid { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 640px) {
  .top { gap: 16px; }
  .top nav { display: none; }
  .top .button-small { margin-left: auto; }
  .bench-art { margin-inline: calc(-1 * var(--gutter)); }
  .readout { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .finds li { grid-template-columns: 48px minmax(0, 1fr); gap: 16px; }
  .finds .spec { grid-column: 2; text-align: left; font-size: 1.125rem; }
  .practice ul { grid-template-columns: minmax(0, 1fr); }
  .foot-main { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fcw-lamp, .top { transition: none; }
}