:root {
  --bg: #0f1115;
  --fg: #e8eaed;
  --muted: #9aa0a6;
  --accent: #5eead4;
  --card: #181b22;
  --border: #262a33;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafaf7;
    --fg: #16181d;
    --muted: #5f6368;
    --accent: #0d9488;
    --card: #ffffff;
    --border: #e4e4df;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.7 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--accent); }
.wrap { width: 100%; max-width: 760px; margin: 0 auto; padding: 0 16px; }
header { padding: 24px 0; }
header .wrap { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.logo { font-family: ui-monospace, "SF Mono", Consolas, monospace; font-weight: 600; color: var(--fg); text-decoration: none; }
.logo span { color: var(--accent); }
nav a { color: var(--muted); text-decoration: none; margin-left: 20px; font-size: 15px; }
nav a:hover { color: var(--fg); }
main { flex: 1; padding-bottom: 48px; }
.hero { padding: 56px 0 40px; }
.hero h1 { font-size: clamp(2.1rem, 7vw, 3.4rem); line-height: 1.1; margin: 0 0 16px; letter-spacing: -0.02em; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p { color: var(--muted); font-size: 1.15rem; max-width: 560px; margin: 0; }
h2 { font-size: 1.1rem; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .08em; margin: 40px 0 16px; }
.list { display: grid; gap: 16px; }
.card { display: block; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; text-decoration: none; color: var(--fg); }
.card:hover { border-color: var(--accent); }
.card h3 { margin: 0 0 6px; font-size: 1.15rem; }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }
.card .meta { font-size: .8rem; color: var(--muted); margin-bottom: 6px; }
.focus { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.focus .box { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.focus h3 { margin: 0 0 6px; font-size: 1.05rem; }
.focus p { margin: 0; color: var(--muted); font-size: .95rem; }
article h1 { font-size: clamp(1.8rem, 5vw, 2.4rem); line-height: 1.2; margin: 40px 0 8px; letter-spacing: -0.01em; }
article .meta { color: var(--muted); font-size: .9rem; margin-bottom: 28px; }
article h2 { text-transform: none; letter-spacing: 0; font-size: 1.4rem; color: var(--fg); margin: 36px 0 10px; }
article p, article li { color: var(--fg); }
article pre { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; overflow-x: auto; font-size: .9rem; line-height: 1.5; }
article code { font-family: ui-monospace, "SF Mono", Consolas, monospace; font-size: .92em; }
article :not(pre) > code { background: var(--card); border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px; }
.back { display: inline-block; margin-top: 32px; font-size: .95rem; }
footer { padding: 24px 0; border-top: 1px solid var(--border); color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
footer a { color: var(--muted); margin-left: 16px; }