:root {
  color-scheme: dark;
  --bg: #1a1a1a;
  --surface: #2a2a2a;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --primary: #6366f1;
  --secondary: #a855f7;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.75;
}
a { color: inherit; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.nav {
  border-bottom: 1px solid rgba(255,255,255,.1);
  background: rgba(26,26,26,.92);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; }
.brand {
  font-size: 22px;
  font-weight: 900;
  text-decoration: none;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.nav-links { display: flex; gap: 18px; color: var(--muted); font-size: 14px; }
.nav-links a { text-decoration: none; }
.hero { padding: 76px 0 64px; }
.eyebrow {
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .24em;
  text-transform: uppercase;
}
h1 { max-width: 860px; margin: 18px 0 0; font-size: clamp(40px, 7vw, 68px); line-height: 1.08; }
h2 { margin: 0; font-size: clamp(28px, 4vw, 42px); line-height: 1.16; }
h3 { margin: 0; font-size: 18px; }
p { margin: 14px 0 0; color: var(--muted); }
.lead { max-width: 760px; font-size: 19px; }
.section { padding: 56px 0; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 28px; }
.card {
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 22px;
  background: var(--surface);
  padding: 22px;
}
.answer {
  margin-top: 36px;
  border: 1px solid rgba(99,102,241,.35);
  border-radius: 26px;
  background: rgba(99,102,241,.11);
  padding: 24px;
}
.answer p:last-child { color: var(--text); font-size: 18px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button {
  display: inline-flex;
  justify-content: center;
  border-radius: 999px;
  padding: 12px 22px;
  font-weight: 800;
  text-decoration: none;
}
.button.primary { background: linear-gradient(90deg, var(--primary), var(--secondary)); color: white; }
.button.secondary { border: 1px solid rgba(255,255,255,.16); }
.note { max-width: 820px; font-size: 14px; color: rgba(156,163,175,.85); }
.article-meta {
  max-width: 760px;
  color: rgba(156,163,175,.88);
  font-size: 14px;
}
.toc {
  max-width: 860px;
  margin-top: 28px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 24px;
  background: rgba(42,42,42,.78);
  padding: 22px;
}
.toc-title {
  margin: 0;
  color: var(--text);
  font-size: 15px;
  font-weight: 900;
}
.toc ol {
  margin: 12px 0 0;
  padding-left: 1.35em;
  color: rgba(229,231,235,.82);
}
.toc li + li { margin-top: 6px; }
.faq-list {
  margin-top: 24px;
  display: grid;
  gap: 14px;
}
.faq-item {
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 22px;
  background: rgba(42,42,42,.78);
  padding: 20px;
}
.faq-item h3 { margin: 0; }
.faq-item p { margin-top: 10px; }
.article {
  max-width: 860px;
  padding-top: 34px;
}
.article h2 {
  margin-top: 52px;
  font-size: clamp(26px, 3.4vw, 36px);
}
.article h3 {
  margin-top: 28px;
  font-size: 21px;
}
.article p,
.article li {
  color: rgba(229,231,235,.82);
  font-size: 18px;
}
.article ul,
.article ol {
  margin: 18px 0 0;
  padding-left: 1.35em;
  color: rgba(229,231,235,.82);
}
.article li + li { margin-top: 8px; }
.article blockquote {
  margin: 30px 0;
  border-left: 4px solid var(--primary);
  padding: 18px 22px;
  border-radius: 0 18px 18px 0;
  background: rgba(99,102,241,.10);
}
.article blockquote p {
  margin: 0;
  color: var(--text);
}
.article-card {
  margin-top: 24px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 24px;
  background: var(--surface);
  padding: 24px;
}
.footer { border-top: 1px solid rgba(255,255,255,.1); padding: 36px 0; text-align: center; color: var(--muted); font-size: 14px; }
@media (max-width: 820px) {
  .grid { grid-template-columns: 1fr; }
  .hero { padding-top: 52px; }
}