:root {
  --bg: #F5F6F3;
  --panel: #ECEEE9;
  --ink: #171A1B;
  --ink-soft: #565D5E;
  --line: #D7DBD3;
  --line-strong: #B9BFB4;
  --blue: #2C6E8E;
  --blue-soft: #DCEAEF;
  --blue-deep: #17435A;
  --amber: #C97A22;
  --amber-soft: #F5E4CC;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

img, svg { display: block; max-width: 100%; }

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- nav ---------- */

.site-nav {
  border-bottom: 1px solid var(--line);
}

.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.01em;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.wordmark .mark {
  width: 26px;
  height: 26px;
  border: 1.5px solid var(--ink);
  border-radius: 6px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
}

.nav-links {
  display: flex;
  gap: 28px;
  font-family: var(--font-mono);
  font-size: 13px;
}

.nav-links a {
  text-decoration: none;
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.15s, border-color 0.15s;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--ink);
  border-color: var(--ink);
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 96px;
}

.site-footer .wrap {
  padding-top: 32px;
  padding-bottom: 40px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-soft);
}

.site-footer a {
  text-decoration: none;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line-strong);
}

.site-footer a:hover, .site-footer a:focus-visible { color: var(--ink); }

/* ---------- focus ---------- */

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}