:root {
  --ink: #16212e;
  --ink-soft: #4a5a6d;
  --accent: #2f6df6;
  --accent-dark: #1d4fc4;
  --bg: #ffffff;
  --bg-soft: #f3f6fa;
  --line: #e3e9f1;
  --radius: 12px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 980px; margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */
header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  position: sticky; top: 0; z-index: 10;
}
.header-inner {
  display: flex; justify-content: space-between; align-items: center;
  max-width: 980px; margin: 0 auto; padding: 18px 24px;
  flex-wrap: wrap; gap: 10px;
}
.brand {
  font-weight: 700; font-size: 17px; letter-spacing: 0.2px;
  color: var(--ink); text-decoration: none;
}
.brand span { color: var(--accent); }
nav a {
  color: var(--ink-soft); text-decoration: none; font-size: 15px; margin-left: 24px;
}
nav a:first-child { margin-left: 0; }
nav a:hover { color: var(--ink); }
nav a.active { color: var(--ink); font-weight: 600; }

/* ---------- hero ---------- */
.hero { padding: 86px 0 96px; }
.hero h1 {
  font-size: clamp(32px, 5.6vw, 52px); line-height: 1.14; letter-spacing: -0.5px;
  max-width: 700px;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p.lede {
  margin-top: 22px; font-size: 19px; color: var(--ink-soft); max-width: 600px;
}
.cta {
  display: inline-block; margin-top: 32px; background: var(--accent); color: #fff;
  padding: 13px 28px; border-radius: 10px; text-decoration: none; font-weight: 600;
  font-size: 16px;
}
.cta:hover { background: var(--accent-dark); }
.cta.secondary {
  background: transparent; color: var(--accent); border: 1px solid var(--line);
  margin-left: 10px;
}
.cta.secondary:hover { background: var(--bg-soft); color: var(--accent-dark); }

/* ---------- page heads ---------- */
.page-head { padding: 68px 0 12px; }
.page-head h1 { font-size: clamp(28px, 4.4vw, 40px); letter-spacing: -0.4px; }
.page-head p { margin-top: 14px; font-size: 18px; color: var(--ink-soft); max-width: 640px; }

/* ---------- sections ---------- */
section { padding: 60px 0; }
.band { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
h2 { font-size: 25px; letter-spacing: -0.2px; margin-bottom: 8px; }
h3 { font-size: 17px; margin-bottom: 6px; }
p + p { margin-top: 14px; }
.prose p, .prose li { color: var(--ink-soft); font-size: 16.5px; }
.prose ul { margin: 14px 0 0 20px; }
.prose li { margin-bottom: 8px; }
.prose h2 { color: var(--ink); margin-top: 38px; }
.prose h2:first-child { margin-top: 0; }

.cols {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 36px;
  margin-top: 30px;
}
.col p { color: var(--ink-soft); font-size: 15.5px; }

.card {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 26px;
  background: #fff;
}
.card h3 { font-size: 19px; }
.card p { color: var(--ink-soft); font-size: 15.5px; margin-top: 6px; }

.facts { margin-top: 26px; border-top: 1px solid var(--line); }
.fact {
  display: flex; gap: 24px; padding: 14px 0; border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.fact dt { font-weight: 600; min-width: 190px; font-size: 15.5px; }
.fact dd { color: var(--ink-soft); font-size: 15.5px; }

a.inline { color: var(--accent); text-decoration: none; font-weight: 600; }
a.inline:hover { text-decoration: underline; }

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--line); padding: 34px 24px; color: var(--ink-soft);
  font-size: 14px;
}
.footer-inner {
  max-width: 980px; margin: 0 auto;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.footer-inner a { color: var(--ink-soft); text-decoration: none; margin-left: 18px; }
.footer-inner a:hover { color: var(--ink); }

@media (max-width: 620px) {
  nav a { margin-left: 16px; font-size: 14px; }
  .hero { padding: 56px 0 64px; }
  .fact dt { min-width: 0; }
}