/* ============================================================
   faq.css · 技术问答总览页
   Hero 变体：H2 居中大标题
   布局母题：十字分割非对称（x-line 横切 hero）
   ============================================================ */

/* ---------- 1. Hero：居中大标题（H2） ---------- */
.fq-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,var(--bg) 0%,#fff 100%);
  padding:50px 0 60px;
  text-align:center;
}
.fq-xline{top:60%}
.fq-hero-in{position:relative;z-index:2}
.fq-hero-center{max-width:760px;margin:0 auto;text-align:center}
.fq-hero-center .badge{margin-bottom:16px}
.fq-hero-title{
  font-size:clamp(30px,4.2vw,50px);font-weight:800;line-height:1.3;
  margin:10px 0 16px;
}
.fq-hero-title em{font-style:normal;color:var(--blue-deep)}
.fq-hero-sub{
  color:var(--muted);font-size:16.5px;line-height:1.9;
}

/* ---------- 2. 分类胶囊 ---------- */
.fq-cats{
  display:grid;grid-template-columns:1fr 1fr;gap:24px;
}
.fq-cat{
  display:block;background:#fff;border:2px solid var(--line);
  border-radius:var(--r-lg);padding:30px 28px;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,border-color .25s ease;
}
.fq-cat:hover{transform:translateY(-6px)}
.fq-cat-blue{border-top:5px solid var(--blue-deep)}
.fq-cat-green{border-top:5px solid var(--green-deep)}
.fq-cat h3{font-size:19px;margin-bottom:8px;color:var(--ink)}
.fq-cat p{font-size:14.5px;color:var(--muted);margin-bottom:14px}
.fq-cat-more{
  display:inline-block;font-weight:700;font-size:14px;
  color:var(--blue-ink);
}
.fq-cat-green .fq-cat-more{color:var(--green-deep)}

/* ---------- 3. 手风琴列表 ---------- */
.fq-list{
  max-width:860px;margin:0 auto;
  display:flex;flex-direction:column;gap:14px;
}
.fq-item{
  background:#fff;border:2px solid var(--line);border-radius:var(--r-md);
  padding:0 24px;transition:border-color .25s ease;
}
.fq-item[open]{border-color:var(--blue-deep)}
.fq-item summary{
  cursor:pointer;list-style:none;
  padding:18px 0;font-weight:700;font-size:16px;
  position:relative;padding-right:36px;
}
.fq-item summary::-webkit-details-marker{display:none}
.fq-item summary::before{
  content:"Q";display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:50%;
  background:var(--yellow);color:var(--ink);
  font-size:14px;font-weight:800;margin-right:12px;
}
.fq-item summary::after{
  content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:50%;
  background:var(--blue);color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;transition:transform .25s ease;
}
.fq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.fq-item p{
  padding:0 0 20px 40px;color:var(--muted);font-size:15px;line-height:1.8;
}
.fq-item p a{color:var(--blue-ink);text-decoration:underline}

/* ---------- 4. 关于我们一句话 ---------- */
.fq-about{
  background:var(--cream);border-radius:var(--r-lg);padding:36px;
  border-left:4px solid var(--blue-deep);
}
.fq-about h2{font-size:20px;margin-bottom:14px}
.fq-about p{color:var(--muted);font-size:15px;line-height:1.9;margin-bottom:12px}
.fq-about p:last-child{margin-bottom:0}

/* ---------- 5. 没解决引导 ---------- */
.fq-more{
  background:linear-gradient(135deg,var(--cream) 0%,#fff 100%);
  border:2px dashed var(--blue-deep);border-radius:var(--r-lg);
  padding:36px;display:grid;grid-template-columns:1.3fr .7fr;gap:30px;align-items:center;
}
.fq-more-text h2{font-size:22px;margin-bottom:10px}
.fq-more-text p{color:var(--muted);font-size:15px;line-height:1.8}
.fq-more-btns{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 5. CTA ---------- */
.fq-cta-sec{
  background:linear-gradient(120deg,var(--blue-ink) 0%,#1F5070 100%);
}
.fq-cta-in{
  display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center;
}
.fq-cta-text .sec-title{color:#fff;margin-bottom:12px}
.fq-cta-text .sec-title em{color:var(--yellow)}
.fq-cta-text>p{color:#C4DFEC;margin-bottom:20px;max-width:600px}
.fq-cta-btns{display:flex;gap:12px;flex-wrap:wrap}
.fq-cta-card{
  background:rgba(255,255,255,.08);border:2px solid rgba(255,255,255,.2);
  border-radius:var(--r-lg);padding:26px;
}
.fq-cta-card ul{display:flex;flex-direction:column;gap:10px}
.fq-cta-card li{display:flex;justify-content:space-between;font-size:15px;color:#C4DFEC}
.fq-cta-card li span{color:var(--yellow);font-weight:700}
.fq-cta-card li a{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:900px){
  .fq-cats,.fq-more,.fq-cta-in{grid-template-columns:1fr}
  .fq-item summary{padding-right:36px}
  .fq-item p{padding-left:0}
}