:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --text: #141416;
  --muted: #5c584f;
  --accent: #c2410c;
  --border: #e3dfd6;
  --max: 44rem;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0f;
    --surface: #16161c;
    --text: #f5f2ea;
    --muted: #a8a49a;
    --accent: #ff7a45;
    --border: #2a2a33;
  }
}
* {
  box-sizing: border-box;
}
html {
  color-scheme: light dark;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font:
    16px/1.65 ui-sans-serif,
    -apple-system,
    "Segoe UI",
    system-ui,
    sans-serif;
  -webkit-font-smoothing: antialiased;
}
header,
main,
footer {
  padding: 0 1.5rem;
}
main {
  max-width: var(--max);
  margin: 0 auto;
  padding-bottom: 4rem;
}
header {
  max-width: var(--max);
  margin: 0 auto;
  padding-top: 2rem;
}
header nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  align-items: baseline;
}
header a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}
header a.brand {
  color: var(--text);
  font-weight: 700;
  font-size: 1.05rem;
  margin-right: auto;
}
header a:hover,
footer a:hover {
  color: var(--accent);
}
h1 {
  font-size: clamp(2rem, 6vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 2rem 0 1rem;
}
h2 {
  font-size: 1.25rem;
  margin: 2.5rem 0 0.75rem;
}
h3 {
  font-size: 1.05rem;
  margin: 1.75rem 0 0.5rem;
}
p,
li {
  color: var(--text);
}
.lede {
  font-size: 1.15rem;
  color: var(--muted);
}
.hero {
  padding: 3rem 0 1rem;
}
.hanzi {
  font-size: clamp(3rem, 14vw, 5rem);
  line-height: 1;
  margin: 0;
}
.pinyin {
  color: var(--muted);
  letter-spacing: 0.08em;
  margin: 0.5rem 0 0;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  padding: 1.5rem;
  margin: 1.5rem 0;
}
.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
}
.staff {
  display: flex;
  gap: 1.5rem;
  margin: 2rem 0;
}
.staff svg {
  width: 4.5rem;
  height: 5rem;
}
.staff figcaption {
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}
figure {
  margin: 0;
}
.cta {
  display: inline-block;
  margin-top: 1.5rem;
  background: var(--accent);
  color: #fff;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
}
.note {
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  color: var(--muted);
}
footer {
  border-top: 1px solid var(--border);
  margin-top: 4rem;
  padding: 2rem 1.5rem 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}
footer .inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}
footer a {
  color: var(--muted);
}
a {
  color: var(--accent);
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.95rem;
}
th,
td {
  text-align: left;
  padding: 0.6rem 0.5rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th {
  color: var(--muted);
  font-weight: 600;
}