:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-2: #f1f5f9;
  --text: #0f172a;
  --muted: #475569;
  --line: #e2e8f0;
  --brand: #0f172a;
  --brand-2: #1e293b;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
.container { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .inner {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 16px 0;
}
.brand-kicker { font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: #64748b; }
.brand-title { font-weight: 700; }
.nav { display: flex; flex-wrap: wrap; gap: 10px; }
.nav a {
  padding: 10px 14px; border-radius: 999px; background: var(--surface-2); color: var(--muted); font-size: 14px;
}
.nav a.active, .nav a:hover { background: var(--brand); color: #fff; }
.hero { padding: 64px 0 40px; }
.eyebrow {
  display: inline-flex; align-items: center; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--surface); box-shadow: 0 1px 2px rgba(15,23,42,0.05); font-size: 14px; color: var(--muted);
}
.hero h1 { font-size: clamp(2.3rem, 5vw, 4.25rem); line-height: 1.08; margin: 24px 0 20px; letter-spacing: -0.04em; }
.hero p.lead { max-width: 860px; color: var(--muted); font-size: 1.15rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 20px; border-radius: 18px; font-weight: 600; font-size: 15px; border: 1px solid transparent;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--line); }
.section { padding: 28px 0 56px; }
.grid-2 { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 30px; padding: 28px; box-shadow: 0 1px 2px rgba(15,23,42,0.04);
}
.card h2, .card h3 { margin-top: 0; line-height: 1.15; letter-spacing: -0.03em; }
.card p:last-child { margin-bottom: 0; }
.article { background: var(--surface); border: 1px solid var(--line); border-radius: 30px; padding: 36px; box-shadow: 0 1px 2px rgba(15,23,42,0.04); }
.article h2 { margin-top: 34px; margin-bottom: 10px; font-size: 2rem; letter-spacing: -0.03em; }
.article h3 { margin-top: 28px; margin-bottom: 8px; font-size: 1.25rem; }
.article ul { padding-left: 22px; }
.article li { margin: 8px 0; }
.side-note { position: sticky; top: 96px; }
.kpi {
  display: grid; gap: 14px;
}
.kpi .item { padding: 18px 20px; border: 1px solid var(--line); border-radius: 22px; background: var(--surface); }
.kpi .item strong { display: block; font-size: 1.1rem; }
.cta {
  background: var(--brand); color: #fff; border-radius: 32px; padding: 34px; display: grid; gap: 18px;
  box-shadow: 0 16px 30px rgba(15,23,42,0.18);
}
.cta h2 { margin: 0; font-size: clamp(1.8rem, 3.5vw, 3rem); line-height: 1.08; letter-spacing: -0.03em; }
.cta p { margin: 0; color: #cbd5e1; max-width: 720px; }
.cta .btn-secondary { background: rgba(255,255,255,0.06); color: #fff; border-color: rgba(255,255,255,0.16); }
.footer-space { height: 40px; }
.list-page .card h3 { font-size: 1.35rem; }
.list-page .card p { color: var(--muted); }
@media (max-width: 900px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .side-note { position: static; }
  .container { width: min(1120px, calc(100% - 32px)); }
  .hero { padding-top: 44px; }
  .article, .card { padding: 24px; border-radius: 24px; }
}