:root {
  --primary: #6c63ff;
  --text: #1a1a1a;
  --muted: #5f6368;
  --bg: #f7f7fb;
  --card: #ffffff;
  --border: #e6e6ef;
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #9b95ff;
    --text: #ececf1;
    --muted: #a8a8b3;
    --bg: #121218;
    --card: #1c1c24;
    --border: #2c2c38;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 16px; }

header { display: flex; align-items: center; justify-content: space-between; padding-top: 20px; }
header a.brand { font-size: 22px; font-weight: 800; color: var(--primary); text-decoration: none; }
header nav a { margin-left: 16px; color: var(--muted); text-decoration: none; font-size: 14px; }

main { padding-top: 24px; padding-bottom: 48px; }
h1 { font-size: 28px; line-height: 1.3; margin: 8px 0 12px; }
h2 { font-size: 20px; margin: 36px 0 8px; }
h3 { font-size: 16px; margin: 20px 0 6px; }
p, li { color: var(--text); }
.muted { color: var(--muted); font-size: 14px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  margin: 16px 0;
}

.features { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.features .card { margin: 0; }
.features h3 { margin-top: 0; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: var(--card); }
.table-wrap { overflow-x: auto; }

a { color: var(--primary); }

footer { border-top: 1px solid var(--border); padding-top: 16px; padding-bottom: 32px; font-size: 13px; color: var(--muted); }
footer a { color: var(--muted); margin-right: 12px; }