:root {
  --paper:    #EDEFEA;
  --paper-2:  #F7F8F4;
  --ink:      #16211C;
  --ink-2:    #4A5852;
  --ink-3:    #7C8A84;
  --line:     rgba(22,33,28,0.14);
  --brand:    #6750A4;
  --brand-text: #6750A4;
  --accent:   #9C5D0C;
  --on-brand: #FFFFFF;

  --font-display: 'Bricolage Grotesque', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body:    'Public Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono:    'DM Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --gutter: clamp(1.25rem, 4vw, 2.25rem);
  --section-y: clamp(2.5rem, 6vw, 4rem);
  --max: 720px;
}
[data-theme="dark"] {
  --paper:    #000000;
  --paper-2:  #0D0B10;
  --ink:      #E7EDE8;
  --ink-2:    #A2B1AA;
  --ink-3:    #6F807A;
  --line:     rgba(230,225,233,0.18);
  --brand:    #6750A4;
  --brand-text: #D0BCFF;
  --accent:   #E9A93F;
  --on-brand: #FFFFFF;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:    #000000;
    --paper-2:  #0D0B10;
    --ink:      #E7EDE8;
    --ink-2:    #A2B1AA;
    --ink-3:    #6F807A;
    --line:     rgba(230,225,233,0.18);
    --brand:    #6750A4;
    --brand-text: #D0BCFF;
    --accent:   #E9A93F;
    --on-brand: #FFFFFF;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--brand-text); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--ink); }
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
.mono {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink-3);
}

header.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in oklab, var(--paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms ease;
}
header.nav.is-scrolled { border-bottom-color: var(--line); }
.nav-row {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; max-width: 1160px; margin: 0 auto;
  padding-left: var(--gutter); padding-right: var(--gutter);
}
.brand-lock {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--brand-text); text-decoration: none;
  font-family: var(--font-display); font-weight: 800;
  letter-spacing: -0.01em; font-size: 1.15rem;
  -webkit-tap-highlight-color: transparent;
}
.brand-lock svg { width: 28px; height: 28px; }
.theme-toggle {
  appearance: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
  height: 38px; padding: 0 12px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  display: inline-flex; align-items: center;
  -webkit-tap-highlight-color: transparent;
}
.theme-toggle:hover { border-color: var(--ink-3); }

main { padding-top: clamp(1.5rem, 4vw, 2.5rem); padding-bottom: var(--section-y); }
h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 2.8rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 0.75rem 0 1rem;
}
h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  margin: 2.25rem 0 0.5rem;
}
p { margin: 0 0 1rem; color: var(--ink); }
p.lead { color: var(--ink-2); }
ul { padding-left: 1.25rem; margin: 0 0 1rem; }
ul li { margin-bottom: 0.4rem; }
.updated { color: var(--ink-3); margin-top: 2.5rem; font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.06em; text-transform: uppercase; }

footer.site {
  border-top: 1px solid var(--line);
  padding: 2rem 0 3rem;
  color: var(--ink-3);
  font-size: 0.9rem;
}
.foot-row {
  max-width: 1160px; margin: 0 auto;
  padding-left: var(--gutter); padding-right: var(--gutter);
  display: flex; flex-direction: column; gap: 0.75rem;
  justify-content: space-between;
}
@media (min-width: 640px) { .foot-row { flex-direction: row; align-items: center; } }
.foot-links { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.foot-links a { color: var(--ink-2); text-decoration: none; }
.foot-links a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }