:root {
  --bg: #0B0B0D;
  --surface: #17171B;
  --text: #F2F2F4;
  --muted: #9A9AA3;
  --accent: #FF3D57;
  --rule: #2A2A30;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}
main { max-width: 680px; margin: 0 auto; padding: 48px 16px 64px; }
header { display: flex; align-items: center; gap: 16px; margin-bottom: 32px; }
header img { width: 64px; height: 64px; border-radius: 14px; }
header a { color: inherit; text-decoration: none; }
header .name { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; }
header .tag { color: var(--muted); font-size: 15px; }
h1 { font-size: 32px; line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 8px; }
h2 { font-size: 21px; margin: 40px 0 8px; }
h3 { font-size: 17px; margin: 24px 0 4px; }
p, li { color: var(--text); }
.muted { color: var(--muted); }
a { color: var(--accent); }
.card {
  background: var(--surface);
  border-radius: 16px;
  padding: 20px;
  margin: 24px 0;
}
.card p { margin: 0; }
.card .big { font-size: 20px; font-weight: 600; word-break: break-word; }
nav { margin-top: 56px; padding-top: 16px; border-top: 1px solid var(--rule); font-size: 15px; }
nav a { margin-right: 20px; }
footer { color: var(--muted); font-size: 14px; margin-top: 16px; }