:root {
  color-scheme: light;
  --ink: #17221d;
  --muted: #5a6861;
  --paper: #fbfaf5;
  --card: #ffffff;
  --accent: #157347;
  --line: #dfe6e1;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 90% 0%, #dff4e8 0, transparent 34rem),
    var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", sans-serif;
  line-height: 1.75;
}

main {
  width: min(760px, calc(100% - 40px));
  margin: 0 auto;
  padding: 72px 0 48px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: .85rem;
  font-weight: 750;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.2rem, 7vw, 4.4rem);
  line-height: 1.08;
  letter-spacing: -.04em;
}

.lead {
  max-width: 44rem;
  margin: 24px 0 40px;
  color: var(--muted);
  font-size: 1.15rem;
}

section {
  margin: 18px 0;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: color-mix(in srgb, var(--card) 92%, transparent);
}

h2 { margin: 0 0 6px; font-size: 1.18rem; }
p { margin: 0; }

a { color: var(--accent); text-underline-offset: 3px; }

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

nav a {
  padding: 10px 14px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}

footer {
  display: grid;
  gap: 6px;
  margin-top: 42px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .92rem;
}

@media (max-width: 520px) {
  main { width: min(100% - 28px, 760px); padding-top: 44px; }
  section { padding: 18px; }
}