:root {
  color-scheme: light;
  --ink: #1b2b28;
  --muted: #5a7a70;
  --bg: #f6f8f5;
  --card: #ffffff;
  --teal: #1b5a4a;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "PingFang TC", "Noto Sans TC", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
}
main { max-width: 720px; margin: 0 auto; padding: 32px 20px 80px; }
a { color: var(--teal); }
nav a { margin-right: 14px; }
h1 { font-size: 1.7rem; margin: 0 0 8px; }
h2 { font-size: 1.1rem; margin: 28px 0 8px; }
p { margin: 0 0 12px; }
.kicker { color: var(--teal); font-weight: 800; letter-spacing: 0.04em; }
.muted { color: var(--muted); font-size: 0.92rem; }
section { background: var(--card); border-radius: 16px; padding: 20px 22px; margin-top: 16px; }
.lang { margin-top: 40px; padding-top: 24px; border-top: 1px solid #d7e4de; }