:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #111111;
  color: #ececec;
  --muted: #a8a8a8;
  --line: #2c2c2c;
  --max: 760px;
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: #111111; color: #ececec; }
a { color: inherit; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid #fff; outline-offset: 4px; }

.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
header { border-bottom: 1px solid var(--line); }
header .wrap { min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { font-weight: 700; text-decoration: none; }
.back { color: var(--muted); font-size: .94rem; }

main { padding: 72px 0 90px; }
h1, h2 { margin: 0; letter-spacing: -0.025em; }
h1 { font-size: clamp(2.5rem, 8vw, 4.6rem); line-height: 1; }
h2 { margin-top: 44px; font-size: 1.25rem; }
p, li { line-height: 1.7; }
.intro { margin: 20px 0 0; color: var(--muted); font-size: 1.05rem; }
section p, section li { color: #b8b8b8; }
ul { padding-left: 22px; }
.meta { margin-top: 18px; color: #777; font-size: .9rem; }
.notice { margin-top: 26px; padding: 16px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

footer { padding: 28px 0 46px; border-top: 1px solid var(--line); color: #858585; font-size: .88rem; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 18px; }

@media (max-width: 600px) {
  .wrap { width: min(var(--max), calc(100% - 28px)); }
  main { padding-top: 54px; }
  header .wrap { min-height: 58px; }
}