:root {
  color-scheme: light;
  --ink: #162126;
  --muted: #5f6f75;
  --line: #d8e0df;
  --paper: #ffffff;
  --wash: #f4f7f6;
  --teal: #087c80;
  --coral: #b84235;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--wash);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "PingFang HK", sans-serif;
  line-height: 1.65;
}

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

.wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 28px 18px 56px;
}

header {
  padding: 34px 0 22px;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--coral);
  font-weight: 800;
  letter-spacing: 0;
}

h1 {
  margin: 10px 0 8px;
  font-size: clamp(2rem, 6vw, 4rem);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin-top: 34px;
  font-size: 1.35rem;
}

h3 {
  margin-top: 24px;
  font-size: 1rem;
}

p, li {
  color: var(--muted);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

nav a,
.button {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  font-weight: 650;
  text-decoration: none;
}

.card {
  margin-top: 22px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.meta {
  color: var(--muted);
  font-size: 0.94rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.lang {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

footer {
  margin-top: 42px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 560px) {
  .card {
    padding: 18px;
  }
}