:root {
  color-scheme: light dark;
  --bg: #f7f3ea;
  --ink: #191815;
  --muted: #696155;
  --line: #d9d0c0;
  --accent: #b7482b;
  --panel: #fffaf0;
  --code-bg: #ebe1d0;
  --pre-bg: #211f1a;
  --pre-ink: #fff8ec;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15130f;
    --ink: #f5ead7;
    --muted: #b8ab98;
    --line: #393126;
    --accent: #f08a66;
    --panel: #1f1b15;
    --code-bg: #2c251c;
    --pre-bg: #0c0b09;
    --pre-ink: #fff3dd;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-size: 18px;
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-underline-offset: 0.16em;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 920px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--ink);
  font-weight: 750;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  font-size: 0.92rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
}

.nav a:hover {
  color: var(--accent);
}

.content {
  max-width: 820px;
  margin: 0 auto;
  padding: 4rem 1.5rem 5rem;
}

h1,
h2,
h3 {
  line-height: 1.08;
  letter-spacing: -0.045em;
}

h1 {
  max-width: 760px;
  margin: 0 0 1.25rem;
  font-size: clamp(3rem, 13vw, 7.5rem);
}

h2 {
  margin-top: 3rem;
  font-size: clamp(1.7rem, 4vw, 2.7rem);
}

p,
ul,
ol {
  max-width: 680px;
}

.lede {
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(1.25rem, 3vw, 1.65rem);
  line-height: 1.35;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.card {
  display: block;
  min-height: 10rem;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  color: var(--ink);
  text-decoration: none;
}

.card strong {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.card span {
  color: var(--muted);
}

code {
  padding: 0.12em 0.3em;
  border-radius: 5px;
  background: var(--code-bg);
  font-size: 0.9em;
}

pre {
  overflow-x: auto;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--pre-bg);
  color: var(--pre-ink);
}

pre code {
  padding: 0;
  background: transparent;
}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .content {
    padding-top: 2.5rem;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}