:root {
  --ground: #0B0D10;
  --surface: #14171C;
  --surface-2: #1F2329;
  --text: #E8E9EB;
  --text-2: #9AA1A8;
  --text-3: #848B92;
  --accent: #5FD9A4;
  --hairline: rgba(232, 233, 235, 0.08);
}
* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
main { max-width: 680px; margin: 0 auto; padding: 56px 24px 64px; }
header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 64px; }
header img { height: 22px; width: auto; display: block; }
header nav a { color: var(--text-2); text-decoration: none; font-size: 15px; }
header nav a:hover { color: var(--text); }
h1 { font-size: 40px; line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 20px; font-weight: 700; }
h2 { font-size: 22px; line-height: 1.3; margin: 40px 0 12px; font-weight: 600; }
p { margin: 0 0 16px; }
.lede { font-size: 21px; line-height: 1.45; color: var(--text-2); margin-bottom: 36px; }
ul { padding-left: 22px; margin: 0 0 16px; }
li { margin-bottom: 8px; }
a { color: var(--accent); }
.card { background: var(--surface); border: 1px solid var(--hairline); border-radius: 16px; padding: 20px 22px; margin: 28px 0; }
.card p:last-child { margin-bottom: 0; }
.muted { color: var(--text-3); font-size: 15px; }
footer { margin-top: 72px; padding-top: 24px; border-top: 1px solid var(--hairline); color: var(--text-3); font-size: 14px; display: flex; flex-wrap: wrap; gap: 8px 24px; }
footer a { color: var(--text-2); text-decoration: none; }
footer a:hover { color: var(--text); }
@media (max-width: 480px) { h1 { font-size: 32px; } .lede { font-size: 19px; } main { padding-top: 40px; } }