:root {
  --bg: #faf7f2;
  --paper: #ffffff;
  --ink: #1a1614;
  --ink-soft: #5c5651;
  --muted: #8a847e;
  --rule: #e8e2d8;
  --accent: #c0573a;
  --accent-soft: #f2e0d6;
  --max: 38rem;
  --font-display: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Inter, "Helvetica Neue", Arial, sans-serif;
  --font-body: "Charter", "Iowan Old Style", "Source Serif Pro", Georgia, "Times New Roman", serif;
  --font-mono: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14110f;
    --paper: #1c1815;
    --ink: #ece6dd;
    --ink-soft: #b3aca3;
    --muted: #7a736b;
    --rule: #2a2520;
    --accent: #e07a5f;
    --accent-soft: #2a1f1a;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.page {
  max-width: var(--max);
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
}

header.site {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 2.5rem;
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-display);
}

header.site .brand {
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
}

header.site .brand .mark {
  color: var(--accent);
  margin-right: 0.4rem;
}

header.site nav {
  display: flex;
  gap: 1.5rem;
  font-size: 0.875rem;
}

header.site nav a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 120ms ease, border-color 120ms ease;
}

header.site nav a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

header.site nav a.current {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 2.4rem;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0 0 0.6rem;
  color: var(--ink);
}

h1 + .lede {
  color: var(--muted);
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin: 0 0 3rem;
}

h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.005em;
  margin: 2.8rem 0 0.9rem;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
}

h2::before {
  content: "";
  display: inline-block;
  width: 1.25rem;
  height: 1px;
  background: var(--accent);
  flex-shrink: 0;
}

p {
  margin: 0 0 1.1rem;
  color: var(--ink);
}

p + p { margin-top: -0.2rem; }

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-soft);
  transition: border-color 120ms ease;
}

a:hover {
  border-bottom-color: var(--accent);
}

ul {
  margin: 0 0 1.3rem;
  padding-left: 1.2rem;
}

li {
  margin-bottom: 0.4rem;
}

li::marker {
  color: var(--accent);
}

strong { font-weight: 600; }
em { color: var(--ink-soft); }

code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 0.1em 0.4em;
  border-radius: 3px;
  border-bottom: none;
}

a code { color: var(--accent); }

footer.site {
  margin-top: 5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
  font-family: var(--font-display);
  font-size: 0.8rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.5rem;
  flex-wrap: wrap;
}

footer.site a {
  color: var(--ink-soft);
  border-bottom-color: var(--rule);
}

footer.site a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---- landing page ---- */
.landing h1 {
  font-size: 3rem;
}

.landing .tagline {
  font-size: 1.15rem;
  color: var(--ink-soft);
  margin: 0 0 3rem;
  max-width: 28rem;
}

.cards {
  display: grid;
  gap: 1rem;
  margin: 2rem 0 0;
}

.card {
  display: block;
  padding: 1.5rem 1.6rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 6px;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  transition: border-color 150ms ease, transform 150ms ease;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.card .title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  margin: 0 0 0.3rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.card .title .arrow {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  transition: transform 150ms ease;
}

.card:hover .title .arrow {
  transform: translateX(3px);
}

.card .desc {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.55;
}

@media (max-width: 600px) {
  html, body { font-size: 17px; }
  .page { padding: 2.5rem 1.25rem 4rem; }
  h1 { font-size: 2rem; }
  .landing h1 { font-size: 2.3rem; }
  header.site { flex-direction: column; align-items: flex-start; gap: 1rem; }
}