:root {
  color-scheme: dark;
  --bg: #0c0e0c;
  --panel: #171a16;
  --panel-light: #1e231d;
  --line: #30372f;
  --text: #f4f4ed;
  --muted: #b7bdb1;
  --quiet: #8d978a;
  --accent: #e8a33d;
  --accent-ink: #211604;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 72% 4%, #252014 0, transparent 27rem), var(--bg);
  color: var(--text);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; border-radius: 3px; }
.shell { width: min(100% - 48px, 1100px); margin-inline: auto; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 90px;
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-size: .9rem; font-weight: 800; letter-spacing: .18em; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid #bb802e;
  border-radius: 11px;
  background: linear-gradient(145deg, #40301a, #211b12);
  color: var(--accent);
  font-size: 1.05rem;
  letter-spacing: 0;
}
.site-header nav { display: flex; align-items: center; gap: 28px; }
.site-header nav a { color: var(--muted); text-decoration: none; font-size: .9rem; font-weight: 600; }
.site-header nav a:hover, .site-header nav a[aria-current="page"] { color: var(--accent); }

.eyebrow { color: var(--accent); font-size: .78rem; font-weight: 800; letter-spacing: .19em; }
.hero { padding: clamp(80px, 12vw, 150px) 0 clamp(72px, 10vw, 116px); max-width: 850px; }
.hero h1, .page-hero h1 { margin: 12px 0 22px; line-height: 1.03; letter-spacing: -.055em; font-size: clamp(3.5rem, 9vw, 7.2rem); }
.hero h1 span { color: var(--accent); }
.hero-copy, .page-lede { max-width: 680px; color: var(--muted); font-size: clamp(1.1rem, 2vw, 1.3rem); line-height: 1.6; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 22px; min-height: 51px; padding: 12px 19px; border-radius: 10px; font-weight: 700; font-size: .94rem; text-decoration: none; transition: background-color .15s, transform .15s; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--accent); color: var(--accent-ink); }
.button-primary:hover { background: #f0b354; }
.button-secondary { border: 1px solid var(--line); background: var(--panel); color: var(--text); }
.button-secondary:hover { background: var(--panel-light); }

.summary-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-bottom: 90px; }
.summary-card { padding: 31px; min-height: 220px; border: 1px solid var(--line); border-radius: 16px; background: var(--panel); }
.card-index { color: var(--accent); font-size: .72rem; font-weight: 800; letter-spacing: .15em; }
.summary-card h2 { margin: 24px 0 10px; font-size: 1.45rem; letter-spacing: -.025em; }
.summary-card p { max-width: 39ch; margin: 0; color: var(--muted); line-height: 1.65; }

.page-hero { padding: 70px 0 58px; border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: clamp(3.3rem, 7vw, 5.5rem); }
.page-hero .button { margin-top: 18px; }
.page-meta { display: flex; flex-wrap: wrap; gap: 16px 30px; margin-top: 28px; color: var(--quiet); font-size: .85rem; }
.article-layout { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 66px; align-items: start; padding: 48px 0 90px; }
.toc { position: sticky; top: 32px; display: flex; flex-direction: column; align-items: flex-start; gap: 13px; }
.toc p { margin: 0 0 5px; color: var(--quiet); font-size: .73rem; font-weight: 800; letter-spacing: .14em; }
.toc a { color: var(--muted); text-decoration: none; font-size: .88rem; }
.toc a:hover { color: var(--accent); }
.prose { max-width: 790px; }
.prose section { scroll-margin-top: 24px; padding: 0 0 32px; margin: 0 0 38px; border-bottom: 1px solid var(--line); }
.prose section:last-child { border-bottom: 0; margin-bottom: 0; }
.prose h2 { margin: 0 0 18px; font-size: clamp(1.45rem, 2.7vw, 1.8rem); line-height: 1.25; letter-spacing: -.025em; }
.prose h3 { margin: 26px 0 8px; font-size: 1.04rem; }
.prose p { max-width: 73ch; margin: 0 0 16px; color: var(--muted); line-height: 1.78; }
.prose a { color: var(--accent); text-underline-offset: 3px; }
.prose a:hover { color: #ffc978; }
.faq section { padding-bottom: 36px; }

.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 22px; min-height: 94px; border-top: 1px solid var(--line); color: var(--quiet); font-size: .82rem; }
.site-footer div { display: flex; flex-wrap: wrap; gap: 20px; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }

@media (max-width: 720px) {
  .shell { width: min(100% - 32px, 1100px); }
  .site-header { min-height: 74px; }
  .site-header nav { gap: 17px; }
  .hero { padding: 76px 0 70px; }
  .summary-grid { grid-template-columns: 1fr; margin-bottom: 60px; }
  .summary-card { min-height: 0; }
  .page-hero { padding: 58px 0 43px; }
  .article-layout { display: block; padding: 35px 0 60px; }
  .toc { position: static; flex-direction: row; flex-wrap: wrap; gap: 9px 18px; margin-bottom: 42px; }
  .toc p { width: 100%; }
  .site-footer { flex-direction: column; align-items: flex-start; justify-content: center; padding-block: 25px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}