:root{
  --bg:#F5F1E8;--surface:#FFFCF5;--surface-2:#F7F2E6;--border:rgba(45,36,24,.14);
  --wood:#2D6A4F;--wood-deep:#1B4332;--fire:#C1440E;--text:#2A2118;
  --text-dim:#6B5D4B;--text-faint:#8A7B68;
  --font-display:"Space Grotesk","Noto Sans SC","Noto Sans TC",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Noto Sans TC",-apple-system,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,"SF Mono",Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:
    radial-gradient(48% 38% at 50% -4%,rgba(45,106,79,.11),transparent 62%),
    radial-gradient(32% 28% at 84% 14%,rgba(193,68,14,.08),transparent 60%),
    var(--bg);
  color:var(--text);font-family:var(--font-body);line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
.wrap{width:min(1120px,92%);margin-inline:auto}
.site-header{
  position:sticky;top:0;z-index:20;background:rgba(245,241,232,.9);
  border-bottom:1px solid var(--border);backdrop-filter:blur(16px);
}
.site-nav{min-height:68px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:19px}
.brand img{width:38px;height:38px}
.site-nav .links{display:flex;align-items:center;gap:22px;margin-left:auto}
.site-nav .links a{font-size:14px;color:var(--text-dim)}
.site-nav .links a:hover{color:var(--fire)}
.language{display:flex;gap:5px;font-family:var(--font-mono);font-size:12px}
.language a{padding:5px 7px;border-radius:6px}
.language a::after{content:"/";margin-left:7px;color:var(--text-faint)}
.language a:last-child::after{content:"";margin:0}
.language a[aria-current="page"]{background:var(--surface-2);color:var(--fire);font-weight:700}
.hero{padding:82px 0 48px}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-family:var(--font-mono);
  font-size:12px;letter-spacing:.15em;text-transform:uppercase;color:var(--wood);
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--fire)}
h1,h2,h3{font-family:var(--font-display);line-height:1.16;letter-spacing:-.02em}
h1{font-size:clamp(38px,6vw,68px);margin:20px 0 18px;max-width:900px}
h2{font-size:clamp(27px,4vw,40px);margin:0 0 16px}
h3{font-size:20px;margin:0 0 9px}
p{margin:0 0 16px}
.hero-lead{font-size:clamp(17px,2.2vw,21px);color:var(--text-dim);max-width:820px}
.meta{font-family:var(--font-mono);font-size:12px;color:var(--text-faint);margin-top:24px}
.lead-answer,.answer{
  border:1px solid rgba(45,106,79,.23);background:linear-gradient(135deg,rgba(45,106,79,.08),rgba(193,68,14,.05));
  border-radius:18px;padding:24px 26px;
}
.lead-answer{max-width:900px}
.lead-answer strong{color:var(--wood-deep)}
.section{padding:54px 0;border-top:1px solid var(--border)}
.section-intro{max-width:780px;color:var(--text-dim);margin-bottom:28px}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.fact,.card{
  border:1px solid var(--border);background:rgba(255,252,245,.84);
  border-radius:16px;padding:22px;
}
.fact .label{display:block;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--wood);margin-bottom:8px;text-transform:uppercase}
.fact strong{display:block;font-family:var(--font-display);font-size:17px;line-height:1.4}
.fact p{font-size:14px;color:var(--text-dim);margin:8px 0 0}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.card p{color:var(--text-dim);font-size:14.5px;margin-bottom:0}
.card a{display:inline-flex;margin-top:14px;font-family:var(--font-display);font-weight:600;color:var(--fire);font-size:14px}
.card a:hover{text-decoration:underline}
.prose{max-width:840px}
.prose p,.prose li{color:var(--text-dim)}
.prose strong{color:var(--text)}
.prose ul{padding-left:22px}
.prose li{margin:9px 0}
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:16px;background:var(--surface)}
table{width:100%;border-collapse:collapse;min-width:720px}
th,td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--border);vertical-align:top}
th{font-family:var(--font-display);font-size:14px;background:var(--surface-2)}
td{font-size:14px;color:var(--text-dim)}
tr:last-child td{border-bottom:0}
td:first-child{color:var(--text);font-weight:600}
.faq{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.faq details{
  border:1px solid var(--border);border-radius:14px;background:var(--surface);
  padding:0 20px;
}
.faq summary{
  cursor:pointer;padding:19px 30px 19px 0;font-family:var(--font-display);
  font-weight:600;font-size:16px;line-height:1.45;position:relative;list-style:none;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:0;top:16px;font-family:var(--font-mono);
  font-size:20px;color:var(--fire);font-weight:400;
}
.faq details[open] summary::after{content:"−"}
.faq details p{font-size:14.5px;color:var(--text-dim);padding:0 0 18px;margin:0}
.terms{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.term{padding:22px;border-left:3px solid var(--wood);background:rgba(255,252,245,.85)}
.term strong{display:block;font-family:var(--font-display);font-size:17px;margin-bottom:6px}
.term span{display:block;color:var(--text-dim);font-size:14px}
.cta{
  margin-top:30px;padding:26px;border-radius:18px;background:var(--wood-deep);
  color:#fff;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.cta h2{font-size:26px;margin:0 0 6px}
.cta p{color:rgba(255,255,255,.72);font-size:14px;margin:0}
.button{
  flex:none;display:inline-flex;align-items:center;justify-content:center;
  min-height:46px;padding:0 22px;border-radius:11px;background:#fff;
  color:var(--wood-deep);font-family:var(--font-display);font-weight:700;font-size:14px;
}
.button:hover{transform:translateY(-1px)}
.site-footer{border-top:1px solid var(--border);padding:34px 0 44px;color:var(--text-faint);font-size:13px}
.site-footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.site-footer a{color:var(--wood)}
.note{font-size:13px;color:var(--text-faint)}
@media(max-width:850px){
  .site-nav .links{display:none}
  .language{margin-left:auto}
  .facts,.cards,.faq,.terms{grid-template-columns:1fr}
}
@media(max-width:600px){
  .hero{padding-top:56px}
  .section{padding:42px 0}
  .cta{align-items:flex-start;flex-direction:column}
  .button{width:100%}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .button{transition:none}
}