:root {
  --ink: #0f1b2d;
  --ink-soft: #3a4a63;
  --muted: #6b7a91;
  --line: #e4e8ef;
  --bg: #ffffff;
  --bg-soft: #f5f8fc;
  --accent: #0b6bcb;
  --accent-dark: #094f96;
  --warn-bg: #fff8e6;
  --warn-border: #e8c86b;
  --max: 1120px;
  --radius: 10px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: #fff;
  position: sticky; top: 0; z-index: 50;
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand { font-weight: 700; font-size: 18px; color: var(--ink); letter-spacing: -0.01em; }
.brand small { color: var(--muted); font-weight: 500; font-size: 12px; display: block; margin-top: -2px; }
nav.primary { display: flex; gap: 22px; align-items: center; }
nav.primary a { color: var(--ink-soft); font-size: 14px; font-weight: 500; }
nav.primary a:hover { color: var(--accent); text-decoration: none; }
.btn {
  display: inline-block;
  padding: 10px 18px;
  background: var(--accent);
  color: #fff !important;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 14px;
  border: 0;
  cursor: pointer;
  transition: background 0.15s;
}
.btn:hover { background: var(--accent-dark); text-decoration: none; }
.btn.ghost { background: transparent; color: var(--accent) !important; border: 1px solid var(--accent); }
.btn.ghost:hover { background: var(--bg-soft); }
.btn.lg { padding: 14px 28px; font-size: 16px; }

/* Hero */
.hero {
  padding: 72px 0 56px;
  background: linear-gradient(180deg, var(--bg-soft) 0%, #fff 100%);
}
.hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.15;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
}
.hero p.lede {
  font-size: 19px;
  color: var(--ink-soft);
  max-width: 640px;
  margin: 0 0 28px;
}
.hero .ctas { display: flex; gap: 12px; flex-wrap: wrap; }

/* Sections */
section { padding: 56px 0; }
section.alt { background: var(--bg-soft); }
section h2 {
  font-size: clamp(24px, 3vw, 32px);
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}
section p { color: var(--ink-soft); max-width: 720px; }

/* Grids */
.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-top: 32px;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { font-size: 15px; margin: 0; color: var(--ink-soft); }

/* Prose */
.prose h2 { margin-top: 40px; }
.prose h3 { margin-top: 28px; font-size: 19px; }
.prose p, .prose li { font-size: 16px; color: var(--ink-soft); }
.prose ul { padding-left: 22px; }
.prose ul li { margin-bottom: 6px; }

/* Notice box */
.notice {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin: 28px 0;
  font-size: 15px;
  color: #5c4a15;
}
.notice strong { color: #3f3308; }

/* CTA band */
.cta-band {
  background: var(--ink);
  color: #fff;
  text-align: center;
  padding: 56px 20px;
}
.cta-band h2 { color: #fff; margin: 0 0 12px; }
.cta-band p { color: #c9d3e4; max-width: 620px; margin: 0 auto 24px; }

/* Footer */
footer {
  border-top: 1px solid var(--line);
  padding: 40px 0 24px;
  font-size: 13px;
  color: var(--muted);
}
footer .foot-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 24px;
}
footer h4 { color: var(--ink); font-size: 14px; margin: 0 0 10px; }
footer a { color: var(--ink-soft); display: block; padding: 3px 0; }
footer .legal {
  border-top: 1px solid var(--line);
  padding-top: 16px;
  font-size: 12px;
  line-height: 1.5;
}
footer .disclaimer {
  font-size: 11px;
  color: var(--muted);
  margin-top: 12px;
  line-height: 1.5;
}

@media (max-width: 720px) {
  nav.primary a:not(.btn) { display: none; }
  footer .foot-grid { grid-template-columns: 1fr; gap: 24px; }
  .hero { padding: 48px 0 36px; }
}