:root { color-scheme: light dark; }
* { box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  max-width: 760px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
  color: #1c1c22;
  background: #ffffff;
}
header { border-bottom: 2px solid #ff2d95; padding-bottom: 1rem; margin-bottom: 2rem; }
header .brand { font-size: 1.5rem; font-weight: 700; letter-spacing: 0.02em; color: #2a2a32; }
header .brand span { color: #ff2d95; }
h1 { font-size: 1.9rem; margin: 0.2rem 0 0.4rem; }
h2 { font-size: 1.25rem; margin-top: 2rem; }
h3 { font-size: 1.05rem; margin-top: 1.4rem; }
a { color: #0a66c2; }
.muted { color: #6a6a78; font-size: 0.92rem; }
hr { border: none; border-top: 1px solid #e6e6ee; margin: 2.5rem 0; }
ul { padding-left: 1.3rem; }
li { margin: 0.3rem 0; }
code { background: rgba(127,127,127,0.16); padding: 0.1em 0.35em; border-radius: 4px; font-size: 0.9em; }
nav a { margin-right: 1rem; }
footer { margin-top: 3rem; font-size: 0.9rem; }

@media (prefers-color-scheme: dark) {
  body { color: #e6e6ec; background: #15151b; }
  header .brand { color: #d4d4de; }
  a { color: #6cb6ff; }
  .muted { color: #9a9aa8; }
  hr { border-color: #2c2c36; }
  code { background: rgba(255,255,255,0.10); }
}