/* faq.html 专属样式（Writer C） */
.page-hero .lead a{font-weight:600}
.faq-tools{display:flex;justify-content:center;margin-top:28px}
.faq-search{display:flex;align-items:center;gap:10px;width:100%;max-width:520px;background:#fff;border:1px solid var(--border-strong);border-radius:12px;padding:0 16px;box-shadow:0 2px 8px rgba(0,0,0,.04);transition:border-color .15s,box-shadow .15s}
.faq-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.faq-search svg{width:18px;height:18px;color:var(--muted);flex:none}
.faq-search input{flex:1;border:0;outline:0;font:inherit;font-size:15.5px;padding:13px 0;background:transparent;color:var(--text);min-width:0}
.faq-cats{margin-top:16px!important}
.faq-sec{padding:64px 0 88px}
.faq-layout{display:grid;grid-template-columns:200px 1fr;gap:48px;align-items:start}
.faq-side{position:sticky;top:84px}
.fs-inner{display:flex;flex-direction:column;gap:2px;font-size:14.5px}
.fs-inner b{font-size:13px;color:var(--muted);letter-spacing:1px;margin-bottom:8px}
.fs-inner a{color:var(--text);padding:6px 12px;border-left:2px solid var(--border)}
.fs-inner a:hover{color:var(--accent);text-decoration:none;border-left-color:var(--accent)}
.fs-inner a.on{color:var(--accent);border-left-color:var(--accent);font-weight:600;background:var(--accent-soft)}
.fs-btn{margin-top:16px;font:inherit;font-size:13.5px;padding:7px 12px;border-radius:8px;border:1px solid var(--border-strong);background:#fff;color:var(--text);cursor:pointer}
.fs-btn:hover{border-color:var(--accent);color:var(--accent)}
.faq-main .faq{max-width:none;margin:0}
.fgroup{margin-bottom:44px;scroll-margin-top:80px}
.fgroup h2{font-size:22px;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.fgroup h2::before{content:"";width:6px;height:22px;border-radius:3px;background:linear-gradient(180deg,var(--g1),var(--g2))}
.fgroup[hidden],.faq details[hidden]{display:none}
.faq details p b{color:var(--strong)}
.faq summary code,.faq details p code{font-family:var(--mono);font-size:.9em;background:#F0F0F0;padding:0 5px;border-radius:4px;font-weight:500}
.faq details p a{font-weight:600}
.faq mark{background:#FFF0B3;color:inherit;border-radius:2px;padding:0 1px}
.faq-empty{border:1px dashed var(--border-strong);border-radius:var(--radius);padding:24px;text-align:center;color:var(--muted);margin-bottom:24px}
.cta-sec{padding:0 0 88px}
.cta-btns{display:flex;gap:10px;flex-wrap:wrap}
@media (max-width:900px){
  .faq-layout{grid-template-columns:1fr}
  .faq-side{display:none}
}
@media (max-width:760px){
  .faq-sec{padding:40px 0 56px}
  .faq details{padding:0 16px}
  .fgroup h2{font-size:19px}
  .cta-sec{padding:0 0 56px}
}