:root {
  color-scheme: light;
  --text: #171b2a;
  --muted: #5f6b80;
  --line: #e4e8f0;
  --brand: #5b3dde;
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", "Malgun Gothic", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; color: var(--text); background: #f6f8fc; line-height: 1.7; }
a { color: var(--brand); text-underline-offset: .18em; }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 10; padding: 10px 14px; border-radius: 8px; color: #fff; background: #171b2a; transform: translateY(-160%); }
.skip-link:focus { transform: none; }
header { border-bottom: 1px solid var(--line); background: rgba(255,255,255,.95); }
nav { width: min(760px, calc(100% - 32px)); margin: auto; padding: 18px 0; }
nav a { color: var(--text); font-weight: 750; text-decoration: none; }
main { width: min(760px, calc(100% - 32px)); margin: 34px auto 70px; padding: clamp(24px, 5vw, 54px); border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: 0 14px 40px rgba(31,42,75,.06); }
h1 { margin: 0 0 10px; font-size: clamp(30px, 5vw, 44px); letter-spacing: -.045em; line-height: 1.2; }
h2 { margin: 34px 0 10px; font-size: 20px; letter-spacing: -.025em; }
p, li { color: var(--muted); }
.updated { margin: 0 0 30px; color: #7c8799; font-size: 14px; }
.notice { padding: 15px 17px; border: 1px solid #ddd5fb; border-radius: 12px; color: #4e3f82; background: #f6f3ff; }
footer { width: min(760px, calc(100% - 32px)); margin: 0 auto 40px; color: #7c8799; font-size: 13px; }
:focus-visible { outline: 3px solid rgba(91,61,222,.38); outline-offset: 3px; }
@media (max-width: 560px) { main { margin-top: 18px; border-radius: 14px; } }