:root {
  color-scheme: light;
  --primary: #5446c6;
  --primary-soft: #efedff;
  --text: #191817;
  --muted: #696662;
  --border: #e7e3dd;
  --background: #fbfaf7;
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--background); color: var(--text); line-height: 1.7; }
a { color: var(--primary); }
header { border-bottom: 1px solid var(--border); background: rgba(255,255,255,.9); }
nav { max-width: 840px; margin: 0 auto; padding: 18px 22px; display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
.brand { font-size: 22px; font-weight: 900; text-decoration: none; margin-right: auto; }
nav a:not(.brand) { font-size: 14px; font-weight: 700; text-decoration: none; }
main { max-width: 840px; margin: 0 auto; padding: 42px 22px 72px; }
h1 { margin: 0 0 8px; font-size: clamp(30px, 6vw, 44px); line-height: 1.25; }
h2 { margin-top: 40px; font-size: 22px; }
h3 { margin-top: 28px; font-size: 17px; }
p, li, td, th { font-size: 15px; }
.lead { font-size: 18px; color: var(--muted); }
.updated { color: var(--muted); font-size: 13px; margin-bottom: 36px; }
.notice { background: var(--primary-soft); border: 1px solid #d9d4ff; border-radius: 14px; padding: 16px 18px; }
.card { margin-top: 20px; background: #fff; border: 1px solid var(--border); border-radius: 16px; padding: 22px; }
table { width: 100%; border-collapse: collapse; display: block; overflow-x: auto; }
th, td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; vertical-align: top; min-width: 150px; }
th { background: #f6f4f0; }
footer { border-top: 1px solid var(--border); color: var(--muted); font-size: 13px; text-align: center; padding: 24px; }
.button { display: inline-block; background: var(--primary); color: #fff; text-decoration: none; font-weight: 800; padding: 12px 18px; border-radius: 10px; }