:root {
  color-scheme: light;
  --ink: #273933;
  --green: #2f5148;
  --red: #9b4b2c;
  --paper: #f3ecdf;
  --cream: #fffdf8;
  --line: #d5c5b0;
  --gold: #c98552;
}

* { box-sizing: border-box; }
html { background: var(--paper); }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", sans-serif; }
a { color: inherit; }
.site-header { display: flex; min-height: 4.5rem; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); background: rgba(255,253,248,.96); padding: .75rem max(1.25rem, calc((100vw - 1120px)/2)); }
.brand { display: flex; align-items: center; gap: .75rem; text-decoration: none; }
.brand-mark { display: grid; width: 2.7rem; height: 2.7rem; place-items: center; background: var(--green); color: white; font-family: "Yu Mincho", "PMingLiU", serif; font-size: 1.35rem; }
.brand strong, .brand small { display: block; }
.brand strong { letter-spacing: .08em; }
.brand small { margin-top: .15rem; color: #71695f; font-size: .7rem; }
.beta-label { border: 1px solid var(--red); color: var(--red); padding: .35rem .7rem; font-size: .75rem; font-weight: 800; letter-spacing: .1em; }
main, footer { width: min(1120px, calc(100% - 2.5rem)); margin-inline: auto; }
.hero { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(260px, .55fr); border-bottom: 1px solid var(--line); background: linear-gradient(90deg, rgba(255,253,248,.98), rgba(255,248,237,.9)); }
.hero-copy { padding: clamp(2.2rem, 7vw, 5.4rem) clamp(1.5rem, 5vw, 4.5rem); }
.eyebrow, .section-kicker { margin: 0; color: var(--red); font-size: .78rem; font-weight: 900; letter-spacing: .15em; }
h1, h2 { font-family: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif TC", "PMingLiU", serif; }
h1 { margin: 1rem 0; font-size: clamp(2.4rem, 6.4vw, 4.8rem); line-height: 1.2; letter-spacing: -.045em; }
.lede { max-width: 43rem; color: #5d645e; font-size: 1.05rem; line-height: 2; }
.primary-action { display: inline-flex; min-height: 3.25rem; align-items: center; margin-top: 1rem; background: var(--green); color: white; padding: .7rem 1.5rem; font-weight: 900; text-decoration: none; }
.primary-action:focus-visible, a:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }
.qr-panel { display: grid; margin: 0; place-content: center; border-left: 1px solid var(--line); background: #efe1cd; padding: 2rem; text-align: center; }
.qr-panel img { width: min(100%, 280px); height: auto; background: white; padding: .8rem; }
.qr-panel figcaption { margin-top: 1rem; font-size: .82rem; font-weight: 800; }
.ways, .evidence { padding: clamp(2.5rem, 6vw, 4.5rem) 0; }
h2 { margin: .7rem 0 1.8rem; font-size: clamp(2rem, 4vw, 3rem); }
.way-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.way-grid article { min-height: 15rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--cream); padding: 1.6rem; }
.way-grid span { color: var(--gold); font-family: Georgia, serif; font-size: 1.6rem; }
.way-grid h3 { margin: 2rem 0 .7rem; font-size: 1.25rem; }
.way-grid p, .boundary p { color: #626960; line-height: 1.8; }
.evidence { display: grid; grid-template-columns: .9fr 1.1fr; gap: 3rem; border-top: 1px solid var(--line); }
.evidence dl { margin: 0; border-top: 1px solid var(--line); }
.evidence dl div { display: grid; grid-template-columns: 8rem 1fr; gap: 1rem; border-bottom: 1px solid var(--line); padding: 1.1rem 0; }
.evidence dt { font-weight: 900; }
.evidence dd { margin: 0; color: #606860; }
.boundary { border-left: 5px solid var(--gold); background: #fff7e7; padding: 1.3rem 1.5rem; }
.boundary p { margin: .45rem 0 0; }
footer { display: flex; justify-content: space-between; gap: 1rem; border-top: 1px solid var(--line); margin-top: 4rem; padding: 1.5rem 0 3rem; color: #696c66; font-size: .82rem; }

@media (max-width: 760px) {
  main, footer { width: min(100% - 1.5rem, 1120px); }
  .hero, .evidence { grid-template-columns: 1fr; }
  .qr-panel { border-top: 1px solid var(--line); border-left: 0; }
  .way-grid { grid-template-columns: 1fr; }
  .way-grid article { min-height: 0; }
  .evidence { gap: 1rem; }
  footer { display: grid; }
}

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }