:root {
  --paper: #fdfaf2;
  --card: #ffffff;
  --ink: #22222a;
  --muted: #6b6b75;
  --accent: #ec6a33;
  --line: #eadfcd;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #1c1b19;
    --card: #262522;
    --ink: #f1ede4;
    --muted: #aaa69c;
    --accent: #f58a57;
    --line: #3a3833;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.7 -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Helvetica Neue", sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 18px; margin-bottom: 8px; }
header img { width: 84px; height: 84px; border-radius: 20px; box-shadow: 0 4px 14px rgba(0,0,0,.12); }
h1 { font-size: 30px; line-height: 1.25; margin: 0; }
h1 small { display: block; font-size: 17px; font-weight: 500; color: var(--muted); }
h2 { font-size: 21px; margin: 36px 0 8px; }
h3 { font-size: 17px; margin: 20px 0 4px; }
p, li { margin: 6px 0; }
a { color: var(--accent); }
.lang { text-align: right; font-size: 15px; margin-bottom: 12px; }
.lang a { text-decoration: none; margin-left: 12px; }
.lang a[aria-current] { color: var(--ink); font-weight: 600; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; margin: 16px 0; }
.contact { font-size: 19px; font-weight: 600; word-break: break-all; }
.features { padding-left: 1.2em; }
.muted { color: var(--muted); font-size: 15px; }
footer { margin-top: 48px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); padding-top: 16px; }
[lang="en"] [data-zh], [lang="zh-Hant"] [data-en] { display: none; }