:root {
  color-scheme: light;
  --ink: #243b37;
  --muted: #5f756e;
  --paper: #fffaf0;
  --cream: #f5e4bd;
  --green: #176b59;
  --green-dark: #0e4b40;
  --orange: #ed8b32;
  --line: rgba(23, 107, 89, .18);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: radial-gradient(circle at 15% 0%, #ffe8b8 0, transparent 34rem), var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  line-height: 1.75;
}
body::before {
  content: "";
  display: block;
  height: 10px;
  background: repeating-linear-gradient(135deg, var(--green) 0 30px, var(--orange) 30px 60px, #f8d276 60px 90px);
}
.shell { width: min(920px, calc(100% - 36px)); margin: 0 auto; padding: 70px 0 64px; }
.home { min-height: calc(100vh - 10px); display: flex; flex-direction: column; justify-content: center; }
.eyebrow { margin: 0 0 10px; color: var(--orange); font-weight: 800; letter-spacing: .14em; }
h1 { max-width: 700px; margin: 0; color: var(--green-dark); font-size: clamp(2.2rem, 6vw, 4.6rem); line-height: 1.15; letter-spacing: -.04em; }
h2 { margin-top: 2.4rem; color: var(--green-dark); font-size: 1.45rem; line-height: 1.35; }
h3 { margin-top: 1.7rem; color: var(--green-dark); font-size: 1.08rem; }
.lede { max-width: 620px; margin: 20px 0 36px; color: var(--muted); font-size: 1.15rem; }
.cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; max-width: 720px; }
.card { display: grid; gap: 5px; padding: 24px; color: var(--ink); text-decoration: none; background: rgba(255,255,255,.72); border: 1px solid var(--line); border-radius: 22px; box-shadow: 0 14px 30px rgba(35, 65, 56, .08); transition: transform .18s ease, box-shadow .18s ease; }
.card:hover, .card:focus-visible { transform: translateY(-3px); box-shadow: 0 18px 36px rgba(35, 65, 56, .14); outline: 3px solid rgba(237, 139, 50, .35); }
.card-label { color: var(--orange); font-size: .84rem; font-weight: 800; }
.card strong { color: var(--green-dark); font-size: 1.3rem; }
.card span:last-child { color: var(--muted); font-size: .95rem; }
.page-header { display: flex; justify-content: space-between; gap: 20px; align-items: start; margin-bottom: 42px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.page-header h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
.back { color: var(--green); font-weight: 700; text-decoration: none; white-space: nowrap; }
.back:hover, .back:focus-visible { text-decoration: underline; }
.content { max-width: 760px; }
.content p, .content li { color: var(--muted); }
.content strong { color: var(--ink); }
.content ul { padding-left: 1.3rem; }
.note { padding: 16px 20px; background: #fff1d2; border-left: 4px solid var(--orange); border-radius: 12px; color: var(--ink) !important; }
.meta { color: var(--muted); font-size: .9rem; }
a { color: var(--green); }
footer { margin-top: 58px; color: var(--muted); font-size: .9rem; }
@media (max-width: 640px) {
  .shell { padding-top: 44px; }
  .cards { grid-template-columns: 1fr; }
  .page-header { display: block; }
  .back { display: inline-block; margin-top: 16px; }
}