:root {
  color-scheme: light dark;
  --bg: #f2f2f7;
  --card: #ffffff;
  --text: #1c1c1e;
  --muted: #6e6e73;
  --accent: #2f6fed;
  --line: rgba(60, 60, 67, 0.12);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --card: #1c1c1e;
    --text: #f2f2f7;
    --muted: #98989d;
    --line: rgba(84, 84, 88, 0.45);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap {
  max-width: 40rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}
.lang {
  display: flex;
  gap: 0.5rem;
  margin: 0 0 1.5rem;
}
.lang button {
  appearance: none;
  border: 0;
  background: var(--card);
  color: var(--text);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  font: inherit;
  cursor: pointer;
}
.lang button[aria-pressed="true"] {
  background: var(--accent);
  color: #fff;
}
.mark {
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: 1.35rem;
}
h1 {
  font-size: 2rem;
  letter-spacing: -0.04em;
  margin: 0.25rem 0 0.75rem;
}
.lede { color: var(--muted); margin: 0 0 1.5rem; }
nav.links { display: flex; gap: 1rem; flex-wrap: wrap; }
article {
  background: var(--card);
  border-radius: 18px;
  padding: 1.25rem 1.35rem;
}
article + article { margin-top: 0.85rem; }
h2 { font-size: 1.05rem; margin: 0 0 0.35rem; }
article p { margin: 0; color: var(--muted); }
footer {
  margin-top: 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}
[hidden] { display: none !important; }