:root {
  color-scheme: light;
  --ink: #102a27;
  --muted: #51625e;
  --field: #e7efee;
  --paper: #fbfcf9;
  --line: #183d37;
  --lime: #eaf14b;
  --cobalt: #3956bd;
  --coral: #f07159;
  --soft-blue: #dce5ff;
  --shadow: 7px 7px 0 #102a27;
  --display: "Newsreader", Georgia, serif;
  --body: "Instrument Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--field);
  background-image:
    linear-gradient(rgba(16, 42, 39, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 42, 39, 0.055) 1px, transparent 1px);
  background-size: 28px 28px;
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.55;
}

a { color: inherit; }

button, input, textarea { font: inherit; }

button, .primary-action, .secondary-action, .nav-join {
  min-height: 46px;
}

button, .primary-action, .secondary-action, .install-card a, .nav-join {
  border: 2px solid var(--ink);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

button, .primary-action, .nav-join {
  color: var(--ink);
  background: var(--lime);
}

button { cursor: pointer; padding: 0.8rem 1rem; }

button:hover, .primary-action:hover, .nav-join:hover { background: #f5fa87; }

button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 4px solid var(--coral);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.85rem;
  background: var(--paper);
  border: 2px solid var(--ink);
  transform: translateY(-180%);
}

.skip-link:focus { transform: translateY(0); }

.topbar {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.75rem clamp(1rem, 4vw, 4.5rem);
  background: var(--ink);
  color: white;
}

.wordmark { display: inline-flex; align-items: center; gap: 0.7rem; text-decoration: none; font-weight: 700; }

.wordmark-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--ink);
  background: var(--lime);
  font-family: var(--mono);
  font-size: 0.8rem;
}

.topbar nav { display: flex; align-items: center; gap: 1.25rem; font-size: 0.92rem; }
.topbar nav a { text-decoration: none; }
.topbar nav a:not(.nav-join):hover { text-decoration: underline; text-underline-offset: 0.3rem; }
.nav-join { padding: 0.55rem 0.85rem; }

main, footer { width: min(1180px, calc(100% - 2rem)); margin-inline: auto; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.65fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: end;
  padding: clamp(3.5rem, 8vw, 7rem) 0 clamp(3rem, 6vw, 5rem);
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--cobalt);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1, h2, h3 { margin: 0; font-family: var(--display); line-height: 0.98; }
h1 { max-width: 820px; font-size: clamp(3.3rem, 8vw, 7.7rem); letter-spacing: -0.055em; }
h2 { font-size: clamp(2.2rem, 4vw, 4rem); letter-spacing: -0.035em; }
h3 { font-size: clamp(1.8rem, 3vw, 2.7rem); letter-spacing: -0.025em; }

.hero-deck { max-width: 720px; margin: 1.6rem 0 0; color: var(--muted); font-size: clamp(1.05rem, 1.5vw, 1.25rem); }

.evidence-stamp {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 1.2rem;
  border: 3px solid var(--ink);
  background: var(--paper);
  box-shadow: var(--shadow);
  transform: rotate(-1.25deg);
  font-family: var(--mono);
  font-weight: 600;
}

.evidence-stamp span:last-of-type { text-align: right; }
.evidence-stamp b { color: var(--coral); font-size: 2.6rem; }
.evidence-stamp small { grid-column: 1 / -1; margin-top: 0.8rem; padding-top: 0.8rem; border-top: 1px solid var(--line); color: var(--muted); font-weight: 400; }

.workbench {
  position: relative;
  padding: clamp(1.25rem, 3vw, 2.5rem);
  border: 3px solid var(--ink);
  background: var(--paper);
  box-shadow: 10px 10px 0 var(--ink);
}

.workbench-head, .receipt-head, .maintainer-rail, .limits > div:first-child {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 2rem;
  align-items: end;
}

.workbench-head > p, .receipt-head > div > p:last-child, .resource-heading > p { color: var(--muted); }

.lookup-form { margin-top: 2rem; padding: 1.2rem; border: 2px solid var(--ink); background: var(--soft-blue); }
.lookup-form > label { display: block; margin-bottom: 0.55rem; font-family: var(--mono); font-size: 0.78rem; font-weight: 600; text-transform: uppercase; }
.lookup-row { display: grid; grid-template-columns: 1fr auto; gap: 0.75rem; }
.lookup-row input { width: 100%; min-height: 50px; padding: 0.85rem 1rem; border: 2px solid var(--ink); background: white; font-family: var(--mono); }
#privacy-note { margin: 0.7rem 0 0; color: var(--muted); font-size: 0.85rem; }

.examples { display: flex; flex-wrap: wrap; align-items: center; gap: 0.55rem; margin-top: 1rem; }
.examples span { font-family: var(--mono); font-size: 0.75rem; text-transform: uppercase; }
.examples button { min-height: 34px; padding: 0.35rem 0.55rem; background: white; font-size: 0.68rem; text-transform: none; }

.lookup-state { display: grid; grid-template-columns: auto 1fr; gap: 0.5rem 1rem; margin-top: 1.4rem; padding: 0.85rem 1rem; border-left: 6px solid var(--cobalt); background: #edf0f8; font-family: var(--mono); }
.lookup-state span { color: var(--muted); font-size: 0.7rem; text-transform: uppercase; }
.lookup-state strong { text-align: right; font-size: 0.78rem; }
.lookup-state p { grid-column: 1 / -1; margin: 0.2rem 0 0; color: #8f2d1e; font-family: var(--body); }

.receipt { margin-top: 2rem; border-top: 3px solid var(--ink); padding-top: 2rem; animation: receipt-in 260ms ease-out; }
.receipt-head > a { align-self: start; justify-self: end; font-family: var(--mono); font-size: 0.76rem; }

.metadata-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 1.6rem; border-top: 2px solid var(--ink); border-left: 2px solid var(--ink); }
.metadata-grid > div { min-width: 0; padding: 0.9rem; border-right: 2px solid var(--ink); border-bottom: 2px solid var(--ink); }
.metadata-grid span { display: block; color: var(--muted); font-family: var(--mono); font-size: 0.65rem; text-transform: uppercase; }
.metadata-grid strong { display: block; margin-top: 0.3rem; overflow-wrap: anywhere; font-size: 0.95rem; }

.parameter-tape { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 0.65rem; margin: 1.5rem 0; padding: 0.85rem; background: var(--ink); color: white; font-family: var(--mono); font-size: 0.72rem; }
.parameter-tape b { color: var(--lime); font-size: 1.2rem; }

.precision-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.9rem; }
.precision-grid article { padding: 1.1rem; border: 2px solid var(--ink); background: white; }
.precision-grid article:nth-child(2) { background: var(--lime); }
.precision-grid article:nth-child(3) { background: var(--soft-blue); }
.precision-grid span { font-family: var(--mono); font-size: 0.72rem; font-weight: 600; }
.precision-grid strong { display: block; margin-top: 0.5rem; font-family: var(--display); font-size: clamp(2.3rem, 5vw, 4rem); line-height: 1; }
.precision-grid p { margin: 0.7rem 0 0; color: var(--muted); font-size: 0.82rem; }

.boundary { margin: 1rem 0 0; padding: 1rem; border-left: 6px solid var(--coral); background: #fff1ed; }
.result-actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.3rem; }
.primary-action, .secondary-action { display: inline-flex; align-items: center; padding: 0.7rem 0.9rem; }
.secondary-action { background: white; }

.badge-console { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 1.5rem; margin-top: 2rem; padding: 1.3rem; border: 2px solid var(--ink); background: #f1f6f4; }
.badge-console p { color: var(--muted); }
.badge-console img { display: block; width: 100%; max-width: 620px; height: auto; margin-top: 1rem; }
.copy-stack { display: grid; gap: 0.55rem; }
.copy-stack label { font-family: var(--mono); font-size: 0.7rem; font-weight: 600; text-transform: uppercase; }
.copy-stack textarea { width: 100%; resize: vertical; padding: 0.8rem; border: 2px solid var(--ink); background: white; font-family: var(--mono); font-size: 0.72rem; }
.copy-stack .secondary-button { background: white; }
.copy-state { min-height: 1.5rem; margin: 0; color: var(--cobalt) !important; font-family: var(--mono); font-size: 0.72rem; }

.maintainer-rail { margin-top: clamp(4rem, 8vw, 7rem); padding: clamp(1.5rem, 4vw, 3rem); border: 3px solid var(--ink); background: var(--cobalt); color: white; box-shadow: var(--shadow); align-items: center; }
.maintainer-rail .eyebrow { color: var(--lime); }
.maintainer-rail p { max-width: 650px; }
.install-card { min-width: 0; padding: 1rem; border: 2px solid white; background: var(--ink); }
.install-card pre { max-width: 100%; margin: 0; overflow-wrap: anywhere; white-space: pre-wrap; color: var(--lime); font-family: var(--mono); font-size: 0.76rem; }
.install-card a { display: inline-block; margin-top: 1rem; padding: 0.65rem 0.8rem; border-color: var(--lime); color: var(--lime); }

.limits { margin: clamp(4rem, 8vw, 7rem) 0; }
.limits ol { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin: 2rem 0 0; padding: 0; list-style: none; border-top: 2px solid var(--ink); border-left: 2px solid var(--ink); }
.limits li { padding: 1.1rem; border-right: 2px solid var(--ink); border-bottom: 2px solid var(--ink); background: var(--paper); }
.limits li > span { font-family: var(--mono); color: var(--cobalt); font-size: 0.7rem; font-weight: 600; }
.limits li p { margin: 1rem 0 0; }

footer { display: flex; justify-content: space-between; gap: 1rem; padding: 1.5rem 0 3rem; border-top: 3px solid var(--ink); font-family: var(--mono); font-size: 0.74rem; }

[hidden] { display: none !important; }

@keyframes receipt-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 820px) {
  .topbar { align-items: flex-start; }
  .topbar nav { gap: 0.7rem; flex-wrap: wrap; justify-content: flex-end; }
  .topbar nav > a:not(.nav-join) { display: none; }
  .hero, .workbench-head, .receipt-head, .maintainer-rail, .limits > div:first-child, .badge-console { grid-template-columns: 1fr; }
  .evidence-stamp { max-width: 430px; }
  .metadata-grid { grid-template-columns: repeat(2, 1fr); }
  .precision-grid { grid-template-columns: 1fr; }
  .receipt-head > a { justify-self: start; }
  .limits ol { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  main, footer { width: min(100% - 1.2rem, 1180px); }
  .topbar { padding-inline: 0.65rem; }
  .lookup-row { grid-template-columns: 1fr; }
  .lookup-row button { width: 100%; }
  .metadata-grid, .limits ol { grid-template-columns: 1fr; }
  .parameter-tape { justify-content: flex-start; }
  .result-actions { display: grid; }
  footer { display: grid; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .receipt { animation: none; }
}