:root{
  --bg:#f7f1e8;
  --surface:#fffaf3;
  --surface-strong:#efe2d2;
  --ink:#2b211b;
  --muted:#75675c;
  --line:rgba(71,49,35,.17);
  --terra:#c8562f;
  --terra-dark:#8f351f;
  --gold:#d59b42;
  --sans:"Inter","Noto Sans SC",Arial,sans-serif;
  --shadow:0 22px 70px rgba(70,43,25,.1);
  --radius:24px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:
    radial-gradient(circle at 86% 2%,rgba(222,161,94,.2),transparent 29rem),
    radial-gradient(circle at 2% 34%,rgba(200,86,47,.08),transparent 28rem),
    var(--bg);
  color:var(--ink);
  font:16px/1.75 var(--sans);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}
button,select{font:inherit}
[data-cn]{display:none}
html.cn [data-en]{display:none!important}
html.cn [data-cn]{display:initial}

.skip-link{
  position:fixed;left:18px;top:12px;z-index:2000;
  transform:translateY(-150%);
  padding:10px 16px;border-radius:999px;background:var(--ink);color:#fff;
}
.skip-link:focus{transform:none}
:focus-visible{outline:3px solid var(--terra);outline-offset:4px}

.guide-header{
  position:sticky;top:0;z-index:1000;
  min-height:76px;padding:0 clamp(18px,4vw,64px);
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;
  border-bottom:1px solid var(--line);
  background:rgba(247,241,232,.9);
  backdrop-filter:blur(18px);
}
.guide-brand{
  display:inline-flex;align-items:center;gap:11px;justify-self:start;
  font-size:13px;font-weight:700;letter-spacing:.12em;text-decoration:none;
}
.guide-brand img{width:34px;height:34px;object-fit:contain}
.guide-nav,.guide-tools{display:flex;align-items:center;gap:20px}
.guide-nav{justify-self:center}
.guide-tools{justify-self:end}
.guide-nav a,.guide-tools a{
  position:relative;text-decoration:none;font-size:13px;font-weight:600;
}
.guide-nav a::after,.guide-tools a::after{
  content:"";position:absolute;left:0;right:100%;bottom:-5px;height:1px;
  background:var(--terra);transition:right .25s ease;
}
.guide-nav a:hover::after,.guide-tools a:hover::after,
.guide-nav a[aria-current="page"]::after{right:0}
.lang-select{
  min-width:112px;padding:9px 34px 9px 12px;border:1px solid var(--line);
  border-radius:999px;background:var(--surface);color:var(--ink);font-size:12px;
}

.guide-main{overflow:hidden}
.guide-wrap{width:min(1160px,calc(100% - 40px));margin-inline:auto}
.guide-hero{padding:clamp(74px,10vw,132px) 0 clamp(64px,8vw,104px)}
.guide-hero-grid{
  display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);
  gap:clamp(36px,7vw,100px);align-items:end;
}
.guide-kicker{
  margin-bottom:20px;color:var(--terra-dark);
  font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
}
.guide-title{
  max-width:16ch;margin:0;font-size:clamp(48px,7.4vw,104px);
  font-weight:400;line-height:.99;letter-spacing:-.055em;
}
.guide-title em{color:var(--terra);font-style:normal}
.guide-lead{
  max-width:62ch;margin:28px 0 0;color:var(--muted);
  font-size:clamp(18px,2vw,23px);line-height:1.55;
}
.guide-meta{
  display:flex;flex-wrap:wrap;gap:7px 18px;margin:22px 0 0;
  color:var(--muted);font-size:13px;
}
.guide-meta strong{color:var(--ink);font-weight:600}
.hero-aside{
  padding:26px;border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(255,250,243,.66);box-shadow:var(--shadow);
}
.hero-aside p{margin:0;color:var(--muted)}
.hero-aside strong{display:block;margin-bottom:8px;color:var(--ink);font-size:18px}

.guide-section{padding:clamp(66px,9vw,112px) 0;border-top:1px solid var(--line)}
.guide-section.alt{background:rgba(255,250,243,.54)}
.section-head{
  display:grid;grid-template-columns:minmax(0,.55fr) minmax(0,1fr);
  gap:36px;margin-bottom:42px;align-items:start;
}
.section-number{color:var(--terra);font-size:12px;font-weight:700;letter-spacing:.16em}
.section-title{
  max-width:19ch;margin:0;font-size:clamp(34px,5vw,64px);
  font-weight:450;line-height:1.08;letter-spacing:-.045em;
}
.section-copy{max-width:68ch;margin:20px 0 0;color:var(--muted)}

.guide-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;
}
.guide-card{
  min-height:340px;padding:28px;
  display:flex;flex-direction:column;
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--surface);text-decoration:none;
  box-shadow:0 10px 35px rgba(70,43,25,.06);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.guide-card:hover{
  transform:translateY(-7px);border-color:rgba(200,86,47,.45);
  box-shadow:0 24px 60px rgba(70,43,25,.13);
}
.card-num{color:var(--terra);font-size:12px;font-weight:700;letter-spacing:.16em}
.guide-card h2,.guide-card h3{
  margin:54px 0 14px;font-size:clamp(25px,3vw,36px);
  line-height:1.18;letter-spacing:-.035em;font-weight:500;
}
.guide-card p{margin:0;color:var(--muted)}
.card-link{margin-top:auto;padding-top:28px;font-size:13px;font-weight:700}

.path-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.path-item{padding:32px 28px;border-right:1px solid var(--line)}
.path-item:last-child{border-right:0}
.path-item span{color:var(--terra);font-size:12px;font-weight:700;letter-spacing:.12em}
.path-item h3{margin:12px 0 8px;font-size:22px;line-height:1.25}
.path-item p{margin:0;color:var(--muted)}

.article-shell{
  width:min(1160px,calc(100% - 40px));margin:0 auto;
  display:grid;grid-template-columns:240px minmax(0,740px);gap:clamp(40px,7vw,104px);
  align-items:start;padding-bottom:clamp(72px,10vw,132px);
}
.article-toc{
  position:sticky;top:112px;padding-top:8px;color:var(--muted);font-size:13px;
}
.article-toc strong{display:block;margin-bottom:14px;color:var(--ink)}
.article-toc ol{margin:0;padding-left:20px}
.article-toc li+li{margin-top:9px}
.article-toc a{text-decoration:none}
.article-toc a:hover{color:var(--terra)}
.article-body{min-width:0}
.article-body section{scroll-margin-top:110px;padding:0 0 58px}
.article-body section+section{padding-top:58px;border-top:1px solid var(--line)}
.article-body h2{
  margin:0 0 20px;font-size:clamp(30px,4vw,48px);
  font-weight:500;line-height:1.14;letter-spacing:-.04em;
}
.article-body h3{margin:28px 0 10px;font-size:21px;line-height:1.3}
.article-body p{margin:0 0 18px;color:#4f433a}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:24px;color:#4f433a}
.article-body li+li{margin-top:10px}
.article-body a{color:var(--terra-dark);text-underline-offset:3px}
.article-note{
  margin:28px 0;padding:24px;border-left:3px solid var(--terra);
  border-radius:0 18px 18px 0;background:var(--surface-strong);
}
.article-note strong{display:block;margin-bottom:6px}
.article-note p{margin:0}
.process-list{counter-reset:process;display:grid;gap:14px;margin:28px 0}
.process-step{
  counter-increment:process;
  display:grid;grid-template-columns:48px 1fr;gap:18px;padding:22px;
  border:1px solid var(--line);border-radius:18px;background:var(--surface);
}
.process-step::before{
  content:counter(process,decimal-leading-zero);
  color:var(--terra);font-size:13px;font-weight:700;letter-spacing:.08em;
}
.process-step h3{margin:0 0 5px;font-size:19px}
.process-step p{margin:0}

.compare-wrap{overflow-x:auto;margin:28px 0}
.compare{
  width:100%;border-collapse:collapse;background:var(--surface);
  border:1px solid var(--line);
}
.compare th,.compare td{
  min-width:150px;padding:17px 18px;border-bottom:1px solid var(--line);
  text-align:left;vertical-align:top;
}
.compare th{color:var(--terra-dark);font-size:12px;letter-spacing:.05em}
.compare tr:last-child td{border-bottom:0}

.faq-list{display:grid;gap:12px}
.faq-item{
  padding:22px 24px;border:1px solid var(--line);
  border-radius:18px;background:var(--surface);
}
.faq-item h3{margin:0 0 8px;font-size:18px}
.faq-item p{margin:0}

.related{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;
}
.related a{
  padding:20px;border:1px solid var(--line);border-radius:16px;
  background:var(--surface);text-decoration:none;font-weight:600;
}
.related a:hover{border-color:var(--terra)}

.guide-cta{
  padding:clamp(62px,9vw,108px) 0;background:var(--ink);color:#fffaf3;
}
.guide-cta-inner{
  display:flex;align-items:end;justify-content:space-between;gap:40px;
}
.guide-cta h2{
  max-width:15ch;margin:0;font-size:clamp(36px,5.5vw,72px);
  font-weight:450;line-height:1.06;letter-spacing:-.045em;
}
.guide-cta p{max-width:55ch;margin:20px 0 0;color:rgba(255,250,243,.72)}
.guide-actions{display:flex;flex-wrap:wrap;gap:12px}
.guide-btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 21px;border-radius:999px;
  background:var(--terra);color:#fff;text-decoration:none;font-weight:700;font-size:13px;
}
.guide-btn.secondary{border:1px solid rgba(255,255,255,.3);background:transparent}

.guide-footer{
  padding:34px clamp(20px,4vw,64px);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  border-top:1px solid var(--line);background:var(--bg);
  color:var(--muted);font-size:12px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700}
.footer-brand img{width:30px;height:30px;object-fit:contain}
.legal-footer-links{display:flex;flex-wrap:wrap;gap:14px}
.legal-footer-links a{color:inherit;text-underline-offset:3px}

@media(max-width:900px){
  .guide-header{grid-template-columns:1fr auto;min-height:70px}
  .guide-nav{display:none}
  .guide-hero-grid,.section-head{grid-template-columns:1fr}
  .hero-aside{max-width:600px}
  .guide-grid{grid-template-columns:1fr}
  .guide-card{min-height:270px}
  .guide-card h2,.guide-card h3{margin-top:28px}
  .article-shell{grid-template-columns:1fr}
  .article-toc{position:static;padding:20px;border:1px solid var(--line);border-radius:18px}
  .guide-cta-inner{align-items:start;flex-direction:column}
}
@media(max-width:680px){
  .guide-wrap,.article-shell{width:min(100% - 28px,1160px)}
  .guide-header{padding:0 14px}
  .guide-brand span{display:none}
  .guide-tools>a{display:none}
  .lang-select{min-width:104px}
  .guide-title{font-size:clamp(42px,14vw,66px)}
  .path-grid{grid-template-columns:1fr}
  .path-item{border-right:0;border-bottom:1px solid var(--line)}
  .path-item:last-child{border-bottom:0}
  .related{grid-template-columns:1fr}
  .guide-footer{align-items:flex-start;flex-direction:column}
  .guide-actions{width:100%}
  .guide-btn{flex:1 1 150px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .guide-card{transition:none}
  .guide-card:hover{transform:none}
}
@media print{
  .guide-header,.article-toc,.guide-cta,.guide-footer,#wa-fab,#a11y-btn,#to-top,#cc-banner{display:none!important}
  body{background:#fff;color:#000}
  .guide-hero{padding:30px 0}
  .article-shell{display:block;width:100%}
  .article-body section{break-inside:avoid}
}