:root {
  --bg: #070b14;
  --bg-card: #101426;
  --text: #f7f8fc;
  --muted: #a7aec2;
  --accent: #c4b5fd;
  --line: #2c334c;
  --max: 720px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(900px 420px at 80% -10%, #2a2458 0%, transparent 55%), var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 17px;
}
a { color: var(--accent); }
header {
  border-bottom: 1px solid var(--line);
  background: rgba(7, 11, 20, 0.92);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 2;
}
.wrap { max-width: var(--max); margin: 0 auto; padding: 20px; }
header .wrap { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.brand {
  font-weight: 800;
  letter-spacing: -0.3px;
  color: var(--text);
  text-decoration: none;
}
.brand span {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}
nav { display: flex; gap: 16px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 600; }
nav a:hover, nav a.active { color: var(--accent); }
h1 { font-size: 32px; line-height: 1.15; letter-spacing: -0.5px; margin: 8px 0 12px; }
h2 { font-size: 20px; margin: 28px 0 8px; }
h3 { font-size: 16px; margin: 0 0 6px; color: var(--text); }
p, li { color: var(--muted); }
strong { color: var(--text); }
ul { padding-left: 1.2em; }
li { margin: 6px 0; }
.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px 18px;
  margin: 16px 0;
}
.btn {
  display: inline-block;
  background: var(--accent);
  color: #141200;
  text-decoration: none;
  font-weight: 800;
  padding: 12px 18px;
  border-radius: 12px;
  margin: 8px 8px 0 0;
}
.btn-ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
}
.btn:hover { filter: brightness(1.08); }
.hero { margin: 12px 0 8px; padding: 8px 0 4px; }
.hero-mark {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  display: block;
  margin-bottom: 8px;
}
.lead { font-size: 18px; color: var(--muted); max-width: 40rem; }
.meta { font-size: 14px; color: var(--muted); }
.meta strong { color: var(--text); }
code {
  font-size: 13px;
  background: #070b14;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1px 6px;
  color: var(--accent);
}
footer {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 14px;
}
.note { font-size: 14px; color: var(--accent); }
.disclaimer {
  border-left: 3px solid var(--accent);
  padding-left: 14px;
}