:root{
  --fb-header-bg:#14181f;
  --fb-accent:#ff7a1a;
  --fb-accent-hover:#e8690a;
  --fb-surface:#ffffff;
  --fb-surface-alt:#f4f6f9;
  --fb-text-primary:#1c2230;
  --fb-text-muted:#6b7280;
  --fb-border:#e2e5ea;
  --fb-success:#1a9e5c;
  --space-1:8px;--space-2:16px;--space-3:24px;--space-4:32px;--space-5:40px;--space-6:48px;
}
*{box-sizing:border-box;margin:0;padding:0;}
body{font-family:-apple-system,"Segoe UI",Roboto,"Noto Sans TC",sans-serif;color:var(--fb-text-primary);background:var(--fb-surface);}
a{color:var(--fb-accent);text-decoration:none;}
a:hover{color:var(--fb-accent-hover);text-decoration:underline;}

.fb-header{background:var(--fb-header-bg);color:#fff;position:sticky;top:0;z-index:100;}
.fb-logo{font-size:1.25rem;font-weight:700;color:#fff;letter-spacing:.02em;}
.fb-logo span{color:var(--fb-accent);}
.fb-nav{display:flex;gap:var(--space-4);list-style:none;}
.fb-nav a{color:#fff;font-size:.95rem;}
.fb-nav a:hover{color:var(--fb-accent);text-decoration:none;}
.fb-search-icon{color:#fff;font-size:1.1rem;cursor:pointer;}
.fb-header-cta{margin-left:auto;background:var(--fb-accent);color:#fff;padding:8px 16px;border-radius:6px;font-size:.85rem;font-weight:700;white-space:nowrap;text-decoration:none;}
.fb-header-cta:hover{background:var(--fb-accent-hover);color:#fff;text-decoration:none;}
.fb-mobile-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;}

.fb-faq-item{border-bottom:1px solid var(--fb-border);padding:var(--space-2) 0;}
.fb-faq-item h3{font-size:1rem;margin-bottom:6px;}
.fb-faq-item p{color:var(--fb-text-muted);font-size:.92rem;margin:0;}

.fb-table{width:100%;border-collapse:collapse;margin:var(--space-2) 0 var(--space-2);font-size:.9rem;}
.fb-table th,.fb-table td{border:1px solid var(--fb-border);padding:8px 12px;text-align:left;}
.fb-table th{background:var(--fb-surface-alt);}

.fb-related{background:var(--fb-surface-alt);padding:var(--space-3);border-radius:8px;margin-top:var(--space-4);}
.fb-related ul{list-style:none;margin:0;padding-left:0;}
.fb-related li{margin-bottom:6px;}

.fb-footer{background:var(--fb-header-bg);color:#c7ccd6;padding:var(--space-5) 0 var(--space-3);margin-top:var(--space-5);}
.fb-footer-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--space-3);margin-bottom:var(--space-4);}
.fb-footer-cols h4{color:#fff;font-size:.95rem;margin-bottom:var(--space-2);}
.fb-footer-cols ul{list-style:none;}
.fb-footer-cols li{margin-bottom:6px;}
.fb-footer-cols a{color:#c7ccd6;font-size:.88rem;}
.fb-footer-bottom{border-top:1px solid #2a3040;padding-top:var(--space-2);font-size:.8rem;text-align:center;color:#8b93a3;}

@media (max-width:768px){
  .fb-nav{display:none;}
  .fb-mobile-toggle{display:block;}
  .fb-nav.fb-nav-open{display:flex;position:absolute;top:64px;left:0;right:0;background:var(--fb-header-bg);flex-direction:column;padding:var(--space-2);}
}