:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", sans-serif;
  color: #172033;
  background: #fff;
  line-height: 1.75;
}
* { box-sizing: border-box; }
body { margin: 0; }
a { color: #3e5065; text-underline-offset: 3px; }
img { max-width: 100%; height: auto; }
.container { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.96); border-bottom: 1px solid #e2e8f0; }
.nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.nav img { width: 170px; display: block; }
.nav-links { display: flex; flex-wrap: wrap; gap: 18px; font-weight: 650; }
.nav-links a { text-decoration: none; }
.hero { padding: 72px 0 52px; background: linear-gradient(180deg,#f4f7fa,#fff); }
.eyebrow { color: #4f6278; font-size: .9rem; font-weight: 750; letter-spacing: .04em; }
h1 { margin: 12px 0 20px; font-size: clamp(2.25rem,6vw,4rem); line-height: 1.15; letter-spacing: -.025em; }
h2 { margin: 50px 0 16px; font-size: clamp(1.55rem,4vw,2.25rem); line-height: 1.3; }
h3 { margin: 0 0 8px; font-size: 1.15rem; }
p, li { color: #475569; }
.lead { max-width: 800px; font-size: 1.18rem; }
.breadcrumbs { font-size: .9rem; color: #64748b; }
.grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.card { border: 1px solid #dbe3eb; border-radius: 18px; padding: 24px; background: #fff; }
.card p:last-child { margin-bottom: 0; }
.callout { margin: 32px 0; padding: 24px; border-left: 5px solid #4f6278; border-radius: 10px; background: #f4f7fa; }
.checklist li { margin-block: 9px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th,td { padding: 14px; text-align: left; vertical-align: top; border-bottom: 1px solid #dbe3eb; }
th { color: #263548; background: #f4f7fa; }
details { border-bottom: 1px solid #dbe3eb; padding: 18px 0; }
summary { cursor: pointer; color: #263548; font-weight: 750; font-size: 1.06rem; }
.cta { margin: 64px 0; padding: 34px; border-radius: 22px; text-align: center; background: #0f172a; }
.cta h2,.cta p { color: #fff; margin-top: 0; }
.button { display: inline-block; padding: 11px 20px; border-radius: 999px; color: #fff; background: #4f6278; text-decoration: none; font-weight: 750; }
.site-footer { margin-top: 64px; padding: 36px 0; background: #0f172a; color: #cbd5e1; }
.site-footer p,.site-footer a { color: #cbd5e1; }
.meta { color: #64748b; font-size: .9rem; }
article { max-width: 850px; }
.article-header { padding: 58px 0 24px; border-bottom: 1px solid #e2e8f0; }
.article-body { padding: 12px 0 24px; }
.article-body h2 { scroll-margin-top: 96px; }
.article-body h3 { margin-top: 32px; }
.content-list { padding-block: 56px 76px; }
.content-list h2 { margin: 8px 0 12px; font-size: 1.45rem; }
.content-list .card { display: flex; flex-direction: column; }
.read-more { font-weight: 750; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { display: inline-block; border-radius: 999px; background: #edf2f7; color: #3e5065; padding: 4px 10px; font-size: .85rem; }
@media (max-width: 760px) {
  .nav { align-items: flex-start; padding: 14px 0; flex-direction: column; gap: 10px; }
  .grid { grid-template-columns: 1fr; }
  .hero { padding-top: 48px; }
}