/* ============================================================
   case-building.css · 建材企业官网案例（信阳 · 钢筋堆场）
   布局特征：深色镜像背景 / 2x2 痛点卡 / 大图左置亮点行 / 深色数据条 / 浅CTA
   ============================================================ */

/* ---------- Hero 标签 ---------- */
.cbd-hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.cbd-hero-tags span{
  padding:6px 16px;font-size:13px;letter-spacing:2px;color:var(--gold-2);
  border:1px solid rgba(217,190,133,.45);background:rgba(217,190,133,.08);
}

/* ---------- 背景深色 ---------- */
.cbd-bg{
  background:linear-gradient(150deg,#23262C,#16181D);color:#E9E6DE;padding:96px 0;
}
.cbd-bg-inner{
  display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center;
}
.cbd-bg-copy .sec-kicker{color:var(--gold-2)}
.cbd-bg-copy h2{font-size:32px;color:#fff;margin:12px 0 20px;letter-spacing:3px}
.cbd-bg-copy p{color:#C9C6BC;font-size:15px;line-height:1.95;margin-bottom:14px}
.cbd-bg-copy p b{color:#fff}
.cbd-bg-media img{border-radius:4px;box-shadow:0 24px 60px rgba(0,0,0,.45)}

/* ---------- 痛点 2x2 ---------- */
.cbd-pain-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.cbd-pain-card{
  background:var(--white);border:1px solid var(--line);border-radius:4px;
  padding:30px 28px;box-shadow:var(--shadow-soft);position:relative;
  transition:transform .35s ease,border-color .35s ease;
}
.cbd-pain-card:hover{transform:translateY(-5px);border-color:var(--gold)}
.cbd-pain-card::after{
  content:"";position:absolute;right:24px;bottom:18px;width:28px;height:28px;
  border-right:2px solid var(--gold-2);border-bottom:2px solid var(--gold-2);opacity:.6;
}
.cbd-pain-card h3{font-size:17.5px;margin-bottom:10px}
.cbd-pain-card p{font-size:14px;color:var(--gray)}

/* ---------- 方案双栏 ---------- */
.cbd-plan-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px}
.cbd-plan-col h3{
  font-size:19px;letter-spacing:2px;margin-bottom:16px;padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.cbd-plan-col p{font-size:15px;color:var(--ink-2);margin-bottom:16px;line-height:1.95}
.cbd-plan-col a{color:var(--gold-3);border-bottom:1px dashed var(--gold-2)}
.cbd-plan-col .btn{margin-top:6px}

/* ---------- 亮点大图行 ---------- */
.cbd-hi-row{
  display:grid;grid-template-columns:1.2fr .8fr;gap:50px;align-items:center;
  margin-bottom:64px;
}
.cbd-hi-row:last-child{margin-bottom:0}
.cbd-hi-row-flip{grid-template-columns:.8fr 1.2fr}
.cbd-hi-row-flip .cbd-hi-media{order:2}
.cbd-hi-media img{border-radius:4px;box-shadow:var(--shadow)}
.cbd-hi-index{
  display:inline-block;font-size:12px;letter-spacing:4px;color:var(--gold-3);
  border:1px solid var(--gold-2);padding:5px 14px;margin-bottom:14px;border-radius:2px;
}
.cbd-hi-body h3{font-size:22px;margin-bottom:12px}
.cbd-hi-body p{color:var(--gray);font-size:14.5px;line-height:1.9}

/* ---------- 数据深色条 ---------- */
.cbd-data-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border:1px solid rgba(217,190,133,.3);border-radius:6px;overflow:hidden;
}
.cbd-data-cell{
  padding:34px 20px;text-align:center;border-right:1px solid rgba(217,190,133,.2);
}
.cbd-data-cell:last-child{border-right:0}
.cbd-data-cell b{
  font-family:var(--font-serif);font-size:42px;color:var(--gold-2);display:block;line-height:1;
}
.cbd-data-cell b em{font-style:normal;font-size:15px;color:#C9C6BC}
.cbd-data-cell p{margin-top:10px;font-size:13px;color:#9A9EA6}
.cbd-data-note{
  margin-top:30px;text-align:center;color:#9A9EA6;font-size:14px;
}
.cbd-data-note a{color:var(--gold-2);border-bottom:1px dashed rgba(217,190,133,.5)}

/* ---------- 评价 ---------- */
.cbd-quote-inner{
  max-width:820px;margin:0 auto;text-align:center;
}
.cbd-quote blockquote p{
  font-family:var(--font-serif);font-size:19px;line-height:2.15;color:var(--ink);
}
.cbd-quote cite{
  display:block;margin-top:18px;font-style:normal;font-size:14px;color:var(--gray);
}

/* ---------- 更多案例 ---------- */
.cbd-more-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cbd-more-card{
  background:var(--white);border:1px solid var(--line);border-radius:4px;overflow:hidden;
  box-shadow:var(--shadow-soft);transition:transform .35s ease,border-color .35s ease;
}
.cbd-more-card:hover{transform:translateY(-6px);border-color:var(--gold)}
.cbd-more-card img{aspect-ratio:16/9;object-fit:cover;width:100%}
.cbd-more-card h3{font-size:16px;padding:16px 18px 4px}
.cbd-more-card p{font-size:13px;color:var(--gray);padding:0 18px 18px}

/* ---------- CTA 浅色 ---------- */
.cbd-cta{
  padding:80px 0;text-align:center;
  background:linear-gradient(160deg,#F7F5F0,#EFEBE1);
}
.cbd-cta-inner h2{font-size:28px;margin-bottom:14px;letter-spacing:2px}
.cbd-cta-inner p{color:var(--gray);margin-bottom:26px}
.cbd-cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.cbd-cta-note{margin-top:20px;font-size:13.5px;color:var(--gray)}

/* ---------- 响应式 ---------- */
@media (max-width:992px){
  .cbd-bg-inner,.cbd-plan-grid,.cbd-hi-row,.cbd-hi-row-flip{grid-template-columns:1fr;gap:32px}
  .cbd-hi-row-flip .cbd-hi-media{order:0}
  .cbd-pain-grid{grid-template-columns:1fr}
  .cbd-data-row{grid-template-columns:1fr 1fr}
  .cbd-data-cell:nth-child(2){border-right:0}
  .cbd-data-cell:nth-child(1),.cbd-data-cell:nth-child(2){border-bottom:1px solid rgba(217,190,133,.2)}
  .cbd-more-grid{grid-template-columns:1fr;max-width:520px;margin:0 auto}
}
@media (max-width:640px){
  .cbd-data-row{grid-template-columns:1fr}
  .cbd-data-cell{border-right:0;border-bottom:1px solid rgba(217,190,133,.2)}
  .cbd-data-cell:last-child{border-bottom:0}
  .cbd-cta-inner h2{font-size:22px}
}