:root {
  --ink: #111318;
  --muted: #5c6570;
  --paper: #f7f3eb;
  --card: #fffdf8;
  --line: #e4ddd0;
  --green: #175736;
  --link: #2f7a52;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  font-size: 1.05rem;
  line-height: 1.7;
}

a {
  color: var(--link);
}

a:hover {
  color: var(--green);
}

header,
main,
footer {
  max-width: 40rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

header {
  padding-top: 2.5rem;
}

.brand {
  display: inline-block;
  color: var(--green);
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.02em;
}

nav {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

nav a {
  color: var(--muted);
}

h1 {
  margin: 1.5rem 0 0.5rem;
  font-size: 1.85rem;
  line-height: 1.3;
  color: var(--green);
}

.meta {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 0.95rem;
}

h2 {
  margin: 2rem 0 0.6rem;
  font-size: 1.2rem;
}

h3 {
  margin: 1.25rem 0 0.4rem;
  font-size: 1.05rem;
}

p,
li {
  overflow-wrap: anywhere;
}

ul,
ol {
  padding-left: 1.3rem;
}

li + li {
  margin-top: 0.35rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  font-size: 0.98rem;
}

th,
td {
  border: 1px solid var(--line);
  padding: 0.55rem 0.7rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: #eef5ef;
  font-weight: 600;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
}

footer {
  padding: 2.5rem 1.25rem 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

footer a {
  color: var(--muted);
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e8e6e1;
    --muted: #9aa3ad;
    --paper: #111318;
    --card: #1c2230;
    --line: #2a3344;
    --green: #7dcea0;
    --link: #7dcea0;
  }

  th {
    background: #243028;
  }
}