:root {
  color-scheme: light dark;
  --bg: #faf8f4;
  --fg: #26242f;
  --muted: #6c6880;
  --accent: #4f46e5;
  --card: #ffffff;
  --border: #e9e6f2;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16151d;
    --fg: #edeaf7;
    --muted: #9a96ae;
    --accent: #8983f0;
    --card: #201e2a;
    --border: #302c3e;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Malgun Gothic", "Apple SD Gothic Neo", Roboto, sans-serif;
  line-height: 1.7;
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 20px 96px;
}

.nav { font-size: 14px; margin-bottom: 24px; }
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--accent); }

h1 { font-size: 26px; margin: 0 0 8px; }

.meta { color: var(--muted); font-size: 14px; margin-bottom: 32px; }

h2 {
  font-size: 18px;
  margin: 36px 0 12px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}
h2:first-of-type { border-top: none; margin-top: 0; }

p, li { font-size: 15.5px; }
ul, ol { padding-left: 22px; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 14.5px;
}
th, td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; }
th { background: var(--card); }

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

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 24px;
  margin: 24px 0;
}
.card h3 { margin-top: 0; font-size: 16px; }

.contact {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}