:root {
  color-scheme: dark;
  --bg: #06111f;
  --panel: #0d1c2f;
  --line: #21344a;
  --text: #f6f8fb;
  --muted: #9eabc0;
  --blue: #4b97ff;
  --green: #42d392;
  --amber: #ffb347;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Noto Sans TC", sans-serif;
  line-height: 1.65;
}

main {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 80px;
}

nav {
  display: flex;
  gap: 18px;
  margin-bottom: 48px;
}

nav a, a { color: var(--blue); }
nav a { text-decoration: none; font-weight: 650; }

h1 { font-size: clamp(2rem, 7vw, 3.25rem); line-height: 1.1; margin: 0 0 14px; }
h2 { margin-top: 36px; font-size: 1.35rem; }
h3 { margin-top: 28px; }
p, li { color: #dce4ef; }
.muted { color: var(--muted); }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 22px;
  margin: 24px 0;
}

.status { color: var(--green); font-weight: 750; }
.notice { color: var(--amber); font-weight: 700; }

footer {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .9rem;
}

code { color: #b9d7ff; }

@media (max-width: 520px) {
  main { padding-top: 30px; }
  nav { margin-bottom: 34px; }
  .card { border-radius: 18px; padding: 18px; }
}