:root {
  color-scheme: light;
  --ink: #0f172a; --muted: #475569; --line: #e2e8f0; --brand: #1d4ed8; --wash: #f8fafc;
}
* { box-sizing: border-box; }
body {
  margin: 0; color: var(--ink); background: #fff; line-height: 1.65;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}
.wrap { max-width: 46rem; margin: 0 auto; padding: 0 1.5rem; }
header.top { border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; padding-block: 1rem; }
.brand { font-weight: 600; letter-spacing: -0.02em; text-decoration: none; color: var(--ink); }
h1 { font-size: 2rem; line-height: 1.2; letter-spacing: -0.03em; margin: 2.5rem 0 1rem; }
h2 { font-size: 1.25rem; letter-spacing: -0.02em; margin: 2.5rem 0 .5rem; }
h3 { font-size: 1rem; margin: 1.5rem 0 .25rem; }
p, li { color: var(--muted); }
p.lead { font-size: 1.1rem; color: var(--ink); }
a { color: var(--brand); }
.cta {
  display: inline-block; margin: .5rem 0 .25rem; padding: .85rem 1.4rem; border-radius: .6rem;
  background: var(--ink); color: #fff; text-decoration: none; font-weight: 500;
}
.cta:hover { background: #334155; }
.note { font-size: .85rem; }
.panel { background: var(--wash); border: 1px solid var(--line); border-radius: .75rem; padding: 1.25rem 1.5rem; margin: 1.5rem 0; }
.panel ul { margin: .5rem 0 0; padding-left: 1.1rem; }
.faq dt { font-weight: 600; color: var(--ink); margin-top: 1.25rem; }
.faq dd { margin: .25rem 0 0; color: var(--muted); }
footer.bottom { margin-top: 4rem; border-top: 1px solid var(--line); }
footer.bottom .wrap { padding-block: 1.5rem; font-size: .85rem; color: var(--muted); }
footer.bottom a { margin-right: 1rem; }
.others { margin-top: .75rem; }