:root {
  --bg: #f7f8fc;
  --surface: #ffffff;
  --border: #d9dfef;
  --text: #162033;
  --muted: #55627a;
  --primary: #4860ef;
  --primary-soft: #edf1ff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner, .container, .footer-inner {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
}
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  gap: 16px;
}
.brand {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--text);
  letter-spacing: 0;
}
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.95rem;
}
.hero {
  padding: 56px 0 28px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 18px;
}
.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.3rem);
  line-height: 1.05;
}
.lead {
  margin-top: 16px;
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 760px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 28px 0 40px;
}
.card, .section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 22px;
}
.card h2, .section h2 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 1.18rem;
}
.section + .section { margin-top: 18px; }
.section h3 {
  margin: 22px 0 8px;
  font-size: 1rem;
}
.section p, .section li, .card p, .card li { color: var(--muted); }
.section strong, .card strong { color: var(--text); }
ul, ol { padding-left: 20px; }
.footer {
  margin-top: 42px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}
.footer-inner {
  padding: 26px 0 42px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 18px;
}
.footer h2 {
  margin: 0 0 10px;
  font-size: 1rem;
}
.small { font-size: 0.92rem; color: var(--muted); }
.meta { color: var(--muted); font-size: 0.92rem; margin-top: 10px; }
.notice {
  padding: 14px 16px;
  border-radius: 8px;
  background: var(--primary-soft);
  color: var(--text);
  border: 1px solid #d6defc;
}
@media (max-width: 760px) {
  .grid, .footer-grid { grid-template-columns: 1fr; }
  .header-inner { align-items: flex-start; flex-direction: column; }
  .hero { padding-top: 34px; }
}