:root {
  --bg: #faf8f4;
  --fg: #1c1a17;
  --muted: #6b665e;
  --accent: #b5482a;
  --card: #ffffff;
  --line: #e6e1d8;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #131211; --fg: #f1ede6; --muted: #a49d92; --accent: #e8734f; --card: #1d1b19; --line: #2c2926; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
}
main { max-width: 680px; margin: 0 auto; padding: 48px 20px 80px; }
header { display: flex; align-items: center; gap: 18px; margin-bottom: 40px; }
header img { width: 84px; height: 84px; border-radius: 20px; box-shadow: 0 6px 20px rgba(0,0,0,.15); }
header h1 { margin: 0; font-size: 34px; letter-spacing: -0.02em; }
header p { margin: 4px 0 0; color: var(--muted); }
nav a { color: var(--muted); text-decoration: none; margin-right: 18px; font-size: 15px; }
nav a[aria-current] { color: var(--fg); font-weight: 600; }
h2 { font-size: 22px; margin: 44px 0 12px; letter-spacing: -0.01em; }
h3 { font-size: 17px; margin: 24px 0 6px; }
p, li { color: var(--fg); }
.lead { font-size: 21px; line-height: 1.45; }
.muted { color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; margin: 14px 0; }
.card h3 { margin-top: 0; }
a { color: var(--accent); }
.btn { display: inline-block; background: var(--accent); color: #fff; padding: 10px 18px; border-radius: 999px; text-decoration: none; font-weight: 600; }
footer { margin-top: 64px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
ul { padding-left: 22px; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 15px; background: var(--line); padding: 1px 6px; border-radius: 5px; }