:root {
  --bg: #f7f6f2;
  --text: #16181d;
  --muted: #5b6270;
  --line: #deddd6;
  --accent: #0f6b6b;
  --ring: #0f6b6b;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101316;
    --text: #eceae4;
    --muted: #9aa1ab;
    --line: #262b31;
    --accent: #4fc3c0;
    --ring: #4fc3c0;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 18px;
  line-height: 1.6;
}
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 24px; }
header { padding: 28px 0; }
.wordmark {
  font-weight: 700;
  letter-spacing: 0.01em;
  font-size: 20px;
  color: var(--text);
  text-decoration: none;
}
.hero {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 40px;
  padding: 56px 0 64px;
}
.hero h1 {
  font-size: clamp(36px, 6vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}
.hero p { margin: 0; color: var(--muted); max-width: 34em; }
.gyro { width: 180px; height: 180px; color: var(--ring); }
.gyro .spin { transform-origin: 90px 90px; animation: spin 24s linear infinite; }
.gyro .spin.rev { animation-duration: 36s; animation-direction: reverse; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .gyro .spin { animation: none; } }
section { border-top: 1px solid var(--line); padding: 44px 0; }
h2 {
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 20px;
}
.cols { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.cols h3 { margin: 0 0 6px; font-size: 20px; }
.cols p { margin: 0; color: var(--muted); }
footer { border-top: 1px solid var(--line); padding: 28px 0 48px; color: var(--muted); font-size: 15px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
footer a { color: var(--muted); }
article { padding: 24px 0 56px; max-width: 40em; }
article h1 { font-size: clamp(30px, 5vw, 40px); letter-spacing: -0.02em; margin: 0 0 8px; }
article h2 {
  font-size: 20px; letter-spacing: 0; text-transform: none; color: var(--text); margin: 36px 0 8px;
}
article p { margin: 0 0 14px; }
.updated { color: var(--muted); font-size: 15px; margin-bottom: 28px !important; }
@media (max-width: 640px) {
  body { font-size: 17px; }
  .hero { grid-template-columns: 1fr; padding: 32px 0 44px; }
  .gyro { width: 120px; height: 120px; order: -1; }
  .cols { grid-template-columns: 1fr; gap: 24px; }
}