:root {
  color-scheme: light;
  --cream: #fef8f4;
  --paper: #fffdfb;
  --sage: #36654e;
  --sage-soft: #dce8df;
  --terra: #d66f55;
  --ink: #2d332f;
  --muted: #65706a;
  --line: #ded9d3;
  font-family: -apple-system, BlinkMacSystemFont, "Noto Sans TC", "PingFang TC",
    "Microsoft JhengHei", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 88% 2%, rgba(214, 111, 85, 0.12), transparent 28rem),
    var(--cream);
  line-height: 1.75;
}

a {
  color: var(--sage);
  font-weight: 650;
  text-underline-offset: 0.18em;
}

a[aria-disabled="true"] {
  color: var(--muted);
  cursor: not-allowed;
  text-decoration: none;
}

.shell {
  width: min(760px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 72px;
}

.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  color: var(--sage);
  font-weight: 800;
  text-decoration: none;
}

.mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 13px;
  color: #fff;
  background: linear-gradient(90deg, var(--terra) 0 49%, #63a9ad 51% 100%);
  box-shadow: 0 5px 0 rgba(54, 101, 78, 0.18);
}

main {
  margin-top: 28px;
  padding: clamp(24px, 5vw, 52px);
  border: 1px solid rgba(54, 101, 78, 0.1);
  border-radius: 30px;
  background: rgba(255, 253, 251, 0.94);
  box-shadow: 0 18px 60px rgba(61, 50, 43, 0.08);
}

h1, h2 { color: var(--sage); line-height: 1.28; }
h1 { margin: 0; font-size: clamp(2rem, 7vw, 3.25rem); letter-spacing: -0.04em; }
h2 { margin: 2.1rem 0 0.55rem; font-size: 1.2rem; }
p, ul, ol { margin: 0.55rem 0; }

.lede { margin-top: 1rem; color: var(--muted); font-size: 1.05rem; }
.updated, footer { color: var(--muted); font-size: 0.9rem; }

.callout {
  margin: 1.5rem 0;
  padding: 18px 20px;
  border-radius: 18px;
  background: var(--sage-soft);
}

.warning { background: #fbe3dc; }

.button {
  display: inline-flex;
  justify-content: center;
  margin-top: 12px;
  padding: 12px 18px;
  border-radius: 999px;
  color: white;
  background: var(--sage);
  text-decoration: none;
}

.links { display: grid; gap: 14px; margin-top: 28px; }

.link-card {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  text-decoration: none;
}

footer { padding: 24px 4px 0; text-align: center; }

@media (max-width: 520px) {
  .shell { width: min(100% - 24px, 760px); padding-top: 16px; }
  main { border-radius: 24px; }
}