:root {
  color-scheme: dark;
  --bg: #080d19;
  --card: #121a2b;
  --text: #eaf0ff;
  --muted: #9aa8c7;
  --accent: #3ad7a0;
  --line: #243049;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "PingFang TC", "Noto Sans TC", sans-serif;
  background: var(--bg);
  color: var(--text);
}
main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}
.eyebrow { letter-spacing: .18em; color: var(--accent); margin: 0 0 8px; }
h1 { font-size: 2rem; margin: 0 0 8px; }
h2 { font-size: 1.15rem; margin: 0 0 8px; }
.lead, .version, li, p { color: var(--muted); line-height: 1.5; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 20px;
  margin: 20px 0;
}
.product { color: var(--text); font-size: 1.2rem; margin-bottom: 0; }
.button {
  display: inline-block;
  margin: 12px 0;
  background: #138b79;
  color: #e8fff7;
  text-decoration: none;
  border-radius: 14px;
  padding: 14px 18px;
  font-weight: 700;
}
.status {
  display: inline-block;
  margin: 8px 0;
  padding: 8px 12px;
  border-radius: 999px;
  background: #2a2416;
  color: #f7c14b;
}
ol { padding-left: 1.2rem; }
li { margin: 8px 0; }
@media (max-width: 640px) {
  h1 { font-size: 1.6rem; }
  .button { display: block; text-align: center; }
}