:root {
  color-scheme: light;
  --ink: #18332b;
  --muted: #65736e;
  --paper: #f7f6f0;
  --card: #ffffff;
  --accent: #df5d3e;
  --accent-dark: #b8432a;
  --line: #dfe5e0;
  --green: #2d6a58;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif; line-height: 1.65; }
a { color: inherit; }
.shell { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 5; background: rgba(247,246,240,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
.nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; font-size: 1.15rem; font-weight: 800; }
.brand img { width: 132px; max-height: 48px; object-fit: contain; }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 12px; color: white; background: var(--green); }
.brand-mark.has-image { width: 150px; height: 48px; background: transparent; border-radius: 0; }
.brand-mark img { width: 100%; height: 100%; object-fit: contain; }
.nav-links { display: flex; align-items: center; flex-wrap: wrap; gap: 20px; }
.nav-links a { text-decoration: none; font-weight: 700; }
.nav-links .button, .button { display: inline-flex; justify-content: center; align-items: center; min-height: 44px; padding: 0 20px; border-radius: 999px; background: var(--accent); color: white; text-decoration: none; font-weight: 800; border: 0; }
.button:hover { background: var(--accent-dark); }
.hero { padding: 88px 0 64px; display: grid; grid-template-columns: 1.2fr .8fr; gap: 52px; align-items: center; }
.eyebrow { margin: 0 0 12px; color: var(--accent-dark); font-size: .82rem; letter-spacing: .16em; font-weight: 900; text-transform: uppercase; }
h1 { margin: 0; max-width: 850px; font-size: clamp(2.5rem, 6vw, 5.4rem); line-height: 1.05; letter-spacing: -.04em; }
h2 { margin: 0 0 12px; font-size: clamp(1.65rem, 3vw, 2.6rem); line-height: 1.2; }
.lead { color: var(--muted); font-size: 1.12rem; max-width: 720px; }
.hero-card, .card, .notice, .download-card { background: var(--card); border: 1px solid var(--line); border-radius: 24px; box-shadow: 0 16px 48px rgba(28,55,45,.06); }
.hero-card { padding: 34px; }
.hero-card ol { margin: 16px 0 0; padding-left: 22px; }
.section { padding: 64px 0; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 28px; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card { padding: 26px; }
.card .icon { font-size: 2rem; }
.card p, .download-card p { color: var(--muted); }
.card a { color: var(--accent-dark); font-weight: 800; }
.notice { padding: 30px; background: #eaf1ed; }
.page-hero { padding: 72px 0 28px; }
.page-hero h1 { font-size: clamp(2.4rem, 5vw, 4.3rem); }
.download-list { display: grid; gap: 16px; }
.download-card { padding: 24px; display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.prose { max-width: 800px; padding-bottom: 72px; }
.prose h2 { margin-top: 36px; font-size: 1.45rem; }
.footer { margin-top: 50px; padding: 42px 0; border-top: 1px solid var(--line); color: var(--muted); }
.footer-row { display: flex; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
[hidden] { display: none !important; }
@media (max-width: 820px) {
  .nav { align-items: flex-start; padding: 15px 0; flex-direction: column; }
  .nav-links { gap: 12px; }
  .hero { grid-template-columns: 1fr; padding-top: 56px; }
  .grid { grid-template-columns: 1fr; }
  .download-card { align-items: flex-start; flex-direction: column; }
}