:root {
  --bg: #f8fafc;
  --ink: #0f172a;
  --muted: #475569;
  --line: #cbd5e1;
  --panel: #ffffff;
  --brand: #1d4ed8;
  --brand-ink: #ffffff;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}

.wrap {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
}

.top-links {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
}

.top-link {
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
}

.top-link:hover,
.app-link:hover,
.footer-row a:hover {
  color: var(--ink);
}

.brand-mark {
  width: 1rem;
  height: 1rem;
  border-radius: 999px;
  background: var(--brand);
  display: inline-block;
}

.app-link {
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
}

.hero {
  padding: 72px 0 40px;
}

.hero-compact {
  padding-bottom: 24px;
}

.kicker {
  margin: 0 0 0.6rem;
  color: #1e40af;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.78rem;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
}

.lede {
  max-width: 62ch;
  color: var(--muted);
  font-size: 1.05rem;
  margin-top: 1rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.btn {
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.65rem 0.95rem;
  font-weight: 600;
  display: inline-block;
}

.btn-primary {
  background: var(--brand);
  color: var(--brand-ink);
  border-color: var(--brand);
}

.btn-ghost {
  background: #fff;
  color: var(--ink);
}

.section {
  padding: 40px 0;
}

.section-muted {
  background: #eef2f7;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.4rem, 2.4vw, 2rem);
}

.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 12px;
  padding: 1rem;
}

.card h3 {
  margin: 0 0 0.45rem;
  font-size: 1rem;
}

.card p,
.split li,
.callout p { color: var(--muted); }

.split {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1.2fr 0.8fr;
}

ul {
  margin: 0;
  padding-left: 1.2rem;
}

.callout {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  padding: 1rem;
}

.callout-title {
  margin: 0 0 0.45rem;
  color: var(--ink);
  font-weight: 700;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 18px 0;
  background: #fff;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-row a {
  color: inherit;
}

@media (max-width: 860px) {
  .topbar,
  .footer-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .grid,
  .split { grid-template-columns: 1fr; }
}