:root {
  --bg: #f5f5f7;
  --card: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --line: #e5e5ea;
  --accent: #0a4fa8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --card: #1c1c1e;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --line: #38383a;
    --accent: #5aa0ff;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  line-height: 1.7;
  word-break: keep-all;
}
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 16px 64px;
}
header { margin-bottom: 28px; }
header .app { color: var(--muted); font-size: 15px; margin: 0 0 4px; }
h1 { font-size: 30px; line-height: 1.3; margin: 0; }
.updated { color: var(--muted); font-size: 14px; margin-top: 8px; }
section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px 24px;
  margin-bottom: 16px;
}
h2 { font-size: 19px; margin: 0 0 10px; }
h3 { font-size: 16px; margin: 18px 0 6px; }
p, li { font-size: 16px; }
p { margin: 0 0 10px; }
ul { margin: 0 0 10px; padding-left: 22px; }
a { color: var(--accent); }
nav { margin-top: 28px; font-size: 15px; color: var(--muted); }
nav a { margin-right: 14px; }
.lead { font-size: 17px; color: var(--muted); margin-top: 10px; }
.store {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}