:root {
  --red: #b22222;
  --bg: #faf7f2;
  --ink: #2b2320;
  --muted: #6f625c;
  --card: #ffffff;
  --line: #e8ded4;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.65;
}
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 1.4rem;
  border-bottom: 1px solid var(--line);
  background: var(--card);
  position: sticky;
  top: 0;
}
.brand { font-weight: 800; font-size: 1.15rem; color: var(--ink); text-decoration: none; }
.badge {
  display: inline-block;
  background: var(--red);
  color: #fff;
  width: 1.6em;
  height: 1.6em;
  line-height: 1.6em;
  text-align: center;
  border-radius: 6px;
  margin-right: 0.3em;
}
.nav nav a { margin-left: 1.1rem; color: var(--muted); text-decoration: none; }
.nav nav a:hover { color: var(--red); }
main { max-width: 960px; margin: 0 auto; padding: 0 1.2rem 3rem; }
.hero { text-align: center; padding: 3rem 0 1.5rem; }
.hero h1 { font-size: 2.1rem; margin: 0 0 0.6rem; }
.hl { color: var(--red); }
.tagline { color: var(--muted); max-width: 640px; margin: 0 auto 1.4rem; }
.cta { display: flex; gap: 0.8rem; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 0.65rem 1.3rem;
  border: 2px solid var(--red);
  border-radius: 10px;
  color: var(--red);
  text-decoration: none;
  font-weight: 700;
}
.btn.primary { background: var(--red); color: #fff; }
.btn:hover { filter: brightness(0.94); }
pre.demo {
  display: inline-block;
  text-align: left;
  background: #211d1b;
  color: #ffd9a0;
  padding: 1rem 1.6rem;
  border-radius: 12px;
  margin-top: 1.6rem;
}
section { margin-top: 2.6rem; }
h2 { border-bottom: 3px solid var(--red); display: inline-block; padding-bottom: 0.2rem; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1rem;
}
.grid article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.2rem;
}
.grid h3 { margin-top: 0; }
.pill {
  font-size: 0.7rem;
  background: #f3e2b3;
  border-radius: 20px;
  padding: 0.1em 0.7em;
  vertical-align: middle;
}
table { border-collapse: collapse; width: 100%; background: var(--card); }
th, td { border: 1px solid var(--line); padding: 0.6rem 0.8rem; text-align: left; }
th { background: #f3ece3; }
details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.7rem 1rem;
  margin-bottom: 0.6rem;
}
summary { cursor: pointer; font-weight: 700; }
footer {
  text-align: center;
  color: var(--muted);
  border-top: 1px solid var(--line);
  padding: 1.6rem 1rem 2.4rem;
  margin-top: 3rem;
}
footer a { color: var(--red); }
.kw { font-size: 0.8rem; }
code { background: #f1e9de; padding: 0.1em 0.35em; border-radius: 5px; }
pre code { background: none; padding: 0; }