:root {
  --bg: #0a0a14;
  --card: #141425;
  --line: rgba(255, 255, 255, 0.08);
  --text: #e8e8f0;
  --muted: #a3a3b8;
  --accent: #a78bfa;
  --accent-2: #f5b94a;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(124, 58, 237, 0.25), transparent 60%), var(--bg);
  color: var(--text);
  font: 17px/1.7 Inter, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}
a { color: var(--accent); }
.wrap { max-width: 720px; margin: 0 auto; padding: 0 20px; }
header.top { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; }
header.top a.brand { color: var(--text); font-weight: 700; text-decoration: none; letter-spacing: 0.01em; }
header.top a.app { color: var(--muted); font-size: 15px; text-decoration: none; }
.crumbs { font-size: 14px; color: var(--muted); margin-top: 18px; }
.crumbs a { color: var(--muted); }
h1 { font-size: clamp(30px, 6vw, 42px); line-height: 1.15; margin: 14px 0 12px; letter-spacing: -0.01em; }
.lead { font-size: 19px; color: var(--muted); margin: 0 0 28px; }
h2 { font-size: 24px; line-height: 1.3; margin: 40px 0 10px; }
h3 { font-size: 19px; margin: 26px 0 6px; }
p, li { color: var(--text); }
ul, ol { padding-left: 22px; }
li { margin: 6px 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; margin: 18px 0; }
.example { font-family: Georgia, 'Times New Roman', serif; font-size: 16px; white-space: pre-line; }
.note { border-left: 3px solid var(--accent-2); padding: 4px 0 4px 14px; color: var(--muted); font-size: 15px; }
.cta { display: block; margin: 36px 0; padding: 22px; border-radius: 18px; text-decoration: none; color: #fff;
  background: linear-gradient(135deg, #7c3aed, #4c1d95); }
.cta b { display: block; font-size: 20px; margin-bottom: 4px; }
.cta span { color: rgba(255, 255, 255, 0.85); font-size: 15px; }
.list a { display: block; padding: 16px 18px; margin: 12px 0; border-radius: 14px; background: var(--card);
  border: 1px solid var(--line); text-decoration: none; color: var(--text); }
.list a b { display: block; font-size: 18px; }
.list a span { color: var(--muted); font-size: 15px; }
details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 12px 16px; margin: 10px 0; }
summary { cursor: pointer; font-weight: 600; }
footer { border-top: 1px solid var(--line); margin-top: 48px; padding: 24px 0 40px; color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); }