@font-face {
  font-family: "Space Grotesk";
  src: url("fonts/SpaceGrotesk-var.woff2") format("woff2");
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/PlexMono.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/PlexMono-Medium.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}

:root {
  --paper: #fcfcfb;
  --ink: #14161a;
  --muted: #5a5f6a;
  --hairline: #e3e4e1;
  --chip: #f1f2ee;
  --signal: #2145e6;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: "Space Grotesk", -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

.mono {
  font-family: "IBM Plex Mono", ui-monospace, "Cascadia Mono", monospace;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- header ---- */
header {
  border-bottom: 1px solid var(--hairline);
}
.nav {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 20px 0;
}
.brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--ink);
}
.brand span { color: var(--signal); }
.nav-links a {
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  margin-left: 20px;
}
.nav-links a:hover, .nav-links a:focus { color: var(--signal); }

/* ---- hero ---- */
.hero { padding: 64px 0 40px; }
.eyebrow {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: 16px;
}
h1 {
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.01em;
  max-width: 640px;
}
.sub {
  margin-top: 16px;
  color: var(--muted);
  max-width: 560px;
}

/* ---- spec sheet (signature) ---- */
.sheet {
  margin: 48px 0 64px;
  border-top: 1px solid var(--ink);
}
.sheet-title {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 10px 0 18px;
}
.spec {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 14px;
}
.spec .k { color: var(--muted); white-space: nowrap; }
.spec .leader {
  flex: 1;
  border-bottom: 1px dotted #c9cbc5;
  transform: translateY(-4px);
}
.spec .v { white-space: nowrap; font-weight: 500; }
.spec .v em { color: var(--signal); font-style: normal; }
.footnote {
  margin-top: 14px;
  font-size: 13px;
  color: var(--muted);
}

/* ---- sections ---- */
section { padding: 8px 0 48px; }
h2 {
  font-size: 20px;
  margin-bottom: 14px;
  letter-spacing: -0.005em;
}
p + p { margin-top: 12px; }
.cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
@media (max-width: 640px) { .cols { grid-template-columns: 1fr; } }

.chips { margin-top: 14px; }
.chip {
  display: inline-block;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12.5px;
  background: var(--chip);
  border: 1px solid var(--hairline);
  border-radius: 3px;
  padding: 4px 10px;
  margin: 0 8px 8px 0;
  color: var(--ink);
}

a.inline { color: var(--signal); }

/* ---- legal pages ---- */
.legal { padding: 56px 0 72px; max-width: 720px; }
.legal h1 { font-size: 30px; }
.legal .updated {
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  color: var(--muted);
  margin: 10px 0 34px;
}
.legal h2 { margin-top: 34px; font-size: 18px; }
.legal p, .legal li { color: #2a2d33; }
.legal ul { padding-left: 22px; margin-top: 10px; }
.legal li + li { margin-top: 6px; }

/* ---- footer ---- */
footer {
  border-top: 1px solid var(--hairline);
  padding: 28px 0 44px;
  font-size: 13px;
  color: var(--muted);
}
footer .frow {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
footer a { color: var(--muted); }
footer a:hover { color: var(--signal); }

:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}