:root{
  --vtgo-faq-bg:#ffffff;
  --vtgo-faq-text:#111111;
  --vtgo-faq-soft:#6b6b6b;
  --vtgo-faq-border:#e5e5e5;
  --vtgo-faq-accent:#111111;
  --vtgo-font-display:"Archivo","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
  --vtgo-font-mono:"Archivo","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
}

.vtgo-faq{background:var(--vtgo-faq-bg);color:var(--vtgo-faq-text);font-family:var(--vtgo-font-display);padding:0 0 96px}

/* ---- 主标题 ---- */
.vtgo-faq-hero{padding:80px 32px 64px;text-align:center;border-bottom:1px solid var(--vtgo-faq-border)}
.vtgo-faq-title{margin:0;font-size:clamp(72px,14vw,180px);font-weight:700;letter-spacing:-.04em;line-height:.9}
.vtgo-faq-sub{margin-top:24px;font-family:var(--vtgo-font-mono);font-size:11px;letter-spacing:.3em;color:var(--vtgo-faq-soft);text-transform:uppercase}

/* ---- 主布局 ---- */
.vtgo-faq-body{display:grid;grid-template-columns:220px 1fr;gap:60px;max-width:1280px;margin:0 auto;padding:60px 32px 0}

/* ---- 左侧分类目录 ---- */
.vtgo-faq-toc{position:sticky;top:96px;align-self:start;display:flex;flex-direction:column;gap:4px}
.vtgo-faq-toc-label{font-family:var(--vtgo-font-mono);font-size:10px;letter-spacing:.28em;color:var(--vtgo-faq-soft);text-transform:uppercase;padding-bottom:12px;border-bottom:1px solid var(--vtgo-faq-border);margin-bottom:12px}
.vtgo-faq-toc a{position:relative;padding:8px 0 8px 18px;font-family:var(--vtgo-font-mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;text-decoration:none;color:var(--vtgo-faq-soft);transition:color .25s}
.vtgo-faq-toc a::before{content:"";position:absolute;left:0;top:50%;width:8px;height:1px;background:transparent;transform:translateY(-50%);transition:background .25s}
.vtgo-faq-toc a:hover{color:var(--vtgo-faq-text)}
.vtgo-faq-toc a[data-active]{color:var(--vtgo-faq-text)}
.vtgo-faq-toc a[data-active]::before{background:var(--vtgo-faq-text)}

/* ---- 分类组 ---- */
.vtgo-faq-section{margin-bottom:56px;scroll-margin-top:110px}
.vtgo-faq-section-title{margin:0 0 0;padding:0 0 18px;font-family:var(--vtgo-font-mono);font-size:clamp(20px,2.4vw,32px);font-weight:700;letter-spacing:.12em;text-transform:uppercase;border-bottom:2px solid var(--vtgo-faq-text)}
.vtgo-faq-item{border-bottom:1px solid var(--vtgo-faq-border)}
.vtgo-faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:24px 0;background:none;border:0;cursor:pointer;text-align:left;font-family:var(--vtgo-font-mono);font-size:clamp(13px,1.4vw,15px);font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--vtgo-faq-text);transition:padding .25s}
.vtgo-faq-q:hover{padding-left:8px}
.vtgo-faq-icon{flex:0 0 20px;width:20px;height:20px;position:relative}
.vtgo-faq-icon::before,.vtgo-faq-icon::after{content:"";position:absolute;top:50%;left:0;width:100%;height:1.5px;background:var(--vtgo-faq-text);transform:translateY(-50%);transition:transform .35s cubic-bezier(.22,.61,.36,1)}
.vtgo-faq-icon::after{transform:translateY(-50%) rotate(90deg)}
.vtgo-faq-item[data-open] .vtgo-faq-icon::after{transform:translateY(-50%) rotate(0)}
.vtgo-faq-a{max-height:0;overflow:hidden;transition:max-height .45s cubic-bezier(.22,.61,.36,1)}
.vtgo-faq-a-inner{padding:0 40px 26px 0;font-size:15px;line-height:1.7;color:var(--vtgo-faq-soft)}
.vtgo-faq-a-inner p{margin:0 0 12px}
.vtgo-faq-a-inner p:last-child{margin-bottom:0}
.vtgo-faq-a-inner a{color:var(--vtgo-faq-text);text-decoration:underline;text-underline-offset:3px}

/* ---- 响应式 ---- */
@media(max-width:900px){
  .vtgo-faq-hero{padding:56px 18px 44px}
  .vtgo-faq-body{grid-template-columns:1fr;gap:32px;padding:36px 18px 0}
  .vtgo-faq-toc{display:none}
  .vtgo-faq-toc-label{display:none}
  .vtgo-faq-toc a{flex:0 0 auto;padding:8px 4px;border-bottom:2px solid transparent}
  .vtgo-faq-toc a::before{display:none}
  .vtgo-faq-toc a[data-active]{border-bottom-color:var(--vtgo-faq-text)}
  .vtgo-faq-a-inner{padding-right:0}
}
/* ---- 首屏海报 ---- */
.vtgo-faq-poster{overflow:hidden;background:#f2f2f2}
.vtgo-faq-poster img{display:block;width:100%;height:min(62vh,620px);object-fit:cover;object-position:center 62%}
@media(max-width:767px){.vtgo-faq-poster{width:100vw;height:100vw;min-height:0}.vtgo-faq-poster img{height:100%;object-fit:cover}}