:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #172033;
  --muted: #5d687a;
  --border: #dbe2ec;
  --accent: #3478e5;
  --accent-dark: #245fb8;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: var(--accent); }
a:hover { color: var(--accent-dark); }
.site-shell {
  width: min(920px, calc(100% - 40px));
  margin: 0 auto;
}
header { padding: 22px 0; }
.brand {
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}
.hero { padding: 72px 0 42px; }
.eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
h1 {
  margin: 0 0 18px;
  font-size: clamp(2.5rem, 7vw, 4.6rem);
  line-height: 1.03;
  letter-spacing: -0.045em;
}
.hero p {
  max-width: 700px;
  margin: 0;
  font-size: 1.18rem;
  color: var(--muted);
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 34px 0 62px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
}
.card h2 { margin: 0 0 8px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); }
.content {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: clamp(24px, 5vw, 48px);
  margin: 24px 0 56px;
}
.content h1 { font-size: clamp(2rem, 6vw, 3.2rem); }
.content h2 { margin-top: 34px; margin-bottom: 8px; font-size: 1.3rem; }
.content p, .content li { color: #39465a; }
.content ul { padding-left: 22px; }
.meta { color: var(--muted); margin-top: -8px; }
footer {
  border-top: 1px solid var(--border);
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 0.92rem;
}
.footer-row {
  display: flex;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; }
  .hero { padding-top: 42px; }
}