:root {
  --bg: #fbfaf8;
  --fg: #1c1b19;
  --muted: #6b6862;
  --line: #e2ded6;
  --accent: #b4522a;
  --card: #ffffff;
  --measure: 34rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121110;
    --fg: #eae7e1;
    --muted: #9a958c;
    --line: #2c2a27;
    --accent: #e0855c;
    --card: #1a1917;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family:
    "Iowan Old Style", "Source Han Serif TC", "Noto Serif CJK TC",
    "PingFang TC", Georgia, serif;
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover {
  text-decoration-style: dotted;
}

.site-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2rem 1.5rem 0;
}

.brand {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  color: var(--fg);
  text-decoration: none;
  border: 1px solid var(--line);
  padding: 0.3rem 0.55rem;
}

.site-head nav {
  display: flex;
  gap: 1.1rem;
  font-size: 0.9rem;
}
.site-head nav a {
  color: var(--muted);
  text-decoration: none;
}
.site-head nav a:hover,
.site-head nav a[aria-current] {
  color: var(--fg);
}

main {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 1.5rem 5rem;
}

.hero {
  padding: 4rem 0 3rem;
}

h1 {
  font-size: clamp(2.1rem, 7vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}

.lede {
  font-size: 1.05rem;
  color: var(--fg);
  margin: 0 0 1.25rem;
}

.meta {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0;
}
.meta .sep {
  margin: 0 0.5rem;
}

section {
  padding-top: 2.5rem;
}

h2 {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1.5rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--line);
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 1.4rem 1.5rem;
  margin-bottom: 1rem;
}

.card h3 {
  font-size: 1.1rem;
  margin: 0 0 0.6rem;
  letter-spacing: -0.01em;
}
.card p {
  margin: 0 0 0.6rem;
  font-size: 0.95rem;
}
.card p:last-child {
  margin-bottom: 0;
}

.tags {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.76rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.stack {
  margin: 0;
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 0.4rem 1rem;
}
.stack dt {
  font-size: 0.85rem;
  color: var(--muted);
}
.stack dd {
  margin: 0;
  font-size: 0.95rem;
}

code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.85em;
  background: var(--card);
  border: 1px solid var(--line);
  padding: 0.1em 0.35em;
}

.back {
  margin-top: 2.5rem;
  font-size: 0.9rem;
}

footer {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--muted);
}

footer p {
  margin: 0 0 0.2rem;
}

.build {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.72rem;
}

@media (max-width: 30rem) {
  .stack {
    grid-template-columns: 1fr;
    gap: 0 0;
  }
  .stack dd {
    margin-bottom: 0.8rem;
  }
}