:root {
  --red: #E7352C;
  --deep-red: #B91C1C;
  --cream: #FFF8EC;
  --dark: #1F1F1F;
  --muted: #6B6B6B;
  --border: #F1E4D1;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  background: var(--cream);
  color: var(--dark);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
header {
  background: linear-gradient(135deg, var(--red), var(--deep-red));
  color: #fff;
  padding: 28px 20px 22px;
}
header .brand {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
header .logo {
  width: 44px; height: 44px; border-radius: 12px;
  background: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
}
header h1 { font-size: 22px; font-weight: 800; }
header .sub { max-width: 720px; margin: 6px auto 0; font-size: 13px; opacity: .92; }
nav {
  background: #fff;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
nav .wrap {
  max-width: 720px; margin: 0 auto;
  display: flex; gap: 4px; padding: 8px 12px; white-space: nowrap;
}
nav a {
  color: var(--muted); text-decoration: none;
  font-size: 13px; font-weight: 700;
  padding: 8px 12px; border-radius: 999px;
}
nav a.active { background: var(--red); color: #fff; }
main {
  max-width: 720px; margin: 0 auto;
  padding: 24px 20px 60px;
}
main h2 {
  font-size: 17px; font-weight: 800;
  margin: 26px 0 8px;
}
main p, main li { font-size: 15px; color: #3a3a3a; }
main ul { padding-left: 20px; margin: 6px 0; }
main .intro { font-size: 15px; color: #3a3a3a; }
main .updated {
  display: inline-block; margin-top: 10px;
  background: #FFE8A3; color: var(--dark);
  font-size: 12px; font-weight: 700;
  padding: 4px 12px; border-radius: 999px;
}
footer {
  border-top: 1px solid var(--border);
  padding: 22px 20px 40px;
  text-align: center;
  font-size: 12.5px; color: var(--muted);
}
footer a { color: var(--red); font-weight: 700; text-decoration: none; }