/* ============================================================
   solution-chemical.css — 化工行业方案页
   四道筛子横排 + 深色编号六块 + 左图右文 + 案例三卡 + CTA
   ============================================================ */

/* ---------- 四道筛子 ---------- */
.schem-pain{background:var(--white)}
.schem-screen{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.schem-screen-item{
  position:relative;border:1px solid var(--line);border-radius:14px;
  padding:30px 24px;background:var(--mist);transition:all .35s ease;
}
.schem-screen-item:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--gold-2)}
.schem-screen-item span{
  display:inline-block;font-size:12px;letter-spacing:2px;color:var(--gold-3);
  border:1px solid var(--gold);padding:3px 12px;border-radius:20px;margin-bottom:14px;
}
.schem-screen-item h3{font-size:18px;margin-bottom:10px}
.schem-screen-item p{font-size:13.5px;line-height:1.9;color:var(--gray)}

/* ---------- 深色编号六块 ---------- */
.schem-structure{position:relative;overflow:hidden}
.schem-blocks{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.schem-block{
  position:relative;padding:28px 26px;border:1px solid rgba(217,190,133,.2);
  border-radius:12px;background:rgba(255,255,255,.03);transition:all .35s ease;
}
.schem-block:hover{border-color:var(--gold-2);background:rgba(217,190,133,.07);transform:translateY(-5px)}
.schem-block b{
  display:block;font-family:var(--font-serif);font-size:34px;color:transparent;
  -webkit-text-stroke:1px var(--gold-2);line-height:1;margin-bottom:14px;
}
.schem-block h3{color:#fff;font-size:17px;margin-bottom:10px}
.schem-block p{font-size:13px;line-height:1.9;color:#B7B3A8}
.schem-warn{
  max-width:820px;margin:36px auto 0;padding:18px 26px;
  border-left:3px solid var(--gold-2);background:rgba(217,190,133,.07);
  border-radius:0 10px 10px 0;font-size:13.5px;color:#C9C2B2;line-height:1.9;
}

/* ---------- 做法：左图右文 ---------- */
.schem-how-inner{display:grid;grid-template-columns:.95fr 1.05fr;gap:60px;align-items:center}
.schem-how-media img{border-radius:16px;box-shadow:var(--shadow)}
.schem-how-media figcaption{
  margin-top:14px;font-size:12.5px;color:var(--gray);letter-spacing:1px;
  padding-left:14px;border-left:2px solid var(--gold);
}
.schem-how-item{padding:16px 0;border-bottom:1px solid var(--line)}
.schem-how-item:last-child{border-bottom:0}
.schem-how-item h3{font-size:18px;margin-bottom:8px}
.schem-how-item p{font-size:14px;line-height:1.95;color:var(--gray)}
.schem-how-item a{color:var(--gold-3);font-weight:600;border-bottom:1px dashed var(--gold)}

/* ---------- 案例三卡 ---------- */
.schem-cases{background:var(--white)}
.schem-case-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.schem-case{
  display:block;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  background:var(--mist);transition:all .35s ease;
}
.schem-case:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--gold-2)}
.schem-case img{width:100%;height:180px;object-fit:cover}
.schem-case div{padding:20px 22px 22px}
.schem-case span{
  display:inline-block;font-size:11.5px;letter-spacing:2px;color:var(--gold-3);
  border:1px solid var(--gold);padding:2px 10px;border-radius:20px;margin-bottom:10px;
}
.schem-case h3{font-size:16.5px;line-height:1.6;margin-bottom:8px}
.schem-case p{font-size:13px;color:var(--gray);line-height:1.85}

/* ---------- CTA ---------- */
.schem-cta{
  background:linear-gradient(160deg,#26292F,#1B1E23 70%);
  padding:90px 0;position:relative;overflow:hidden;
}
.schem-cta::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(520px 300px at 80% 25%,rgba(217,190,133,.14),transparent 60%);
}
.schem-cta-inner{position:relative;max-width:820px}
.schem-cta h2{color:#fff;font-size:32px;margin-bottom:18px}
.schem-cta p{color:#C6C2B4;font-size:15px;line-height:2}
.schem-cta a{color:var(--gold-2);border-bottom:1px dashed var(--gold-2)}
.schem-cta-actions{display:flex;flex-wrap:wrap;gap:16px;margin:28px 0 14px}
.schem-cta .btn-line{color:#E9E3CD;border-color:rgba(217,190,133,.45)}
.schem-cta .btn-line:hover{border-color:var(--gold-2);color:#fff;background:rgba(217,190,133,.12)}
.schem-cta-note{font-size:13.5px;color:#9A968C}

/* ---------- 响应式 ---------- */
@media (max-width:992px){
  .schem-screen{grid-template-columns:repeat(2,1fr)}
  .schem-blocks{grid-template-columns:repeat(2,1fr)}
  .schem-how-inner{grid-template-columns:1fr;gap:36px}
  .schem-case-row{grid-template-columns:1fr;gap:18px}
}
@media (max-width:640px){
  .schem-screen{grid-template-columns:1fr}
  .schem-blocks{grid-template-columns:1fr}
  .schem-cta h2{font-size:24px}
}