/* ============================================================
   case-corporate.css —— 企业集团案例（左右交错叙事）
   布局：Hero / 背景引言 + 三需求卡 / 交错图文行 / 三栏亮点 /
   数据条 / 评价引语 / 相关案例三卡 / CTA
   ============================================================ */

/* ---------- 1. Hero ---------- */
.d-hero{position:relative;min-height:88vh;display:flex;align-items:center;overflow:hidden;background:var(--ink)}
.dh-bg{background-position:center 32%}
.dh-veil{
  position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(96deg,rgba(20,20,20,.92) 0%,rgba(20,20,20,.66) 52%,rgba(20,20,20,.25) 100%),
    linear-gradient(0deg,rgba(20,20,20,.5),transparent 42%);
}
.dh-inner{position:relative;z-index:2;max-width:820px;padding-top:120px;padding-bottom:80px}
.crumb{display:inline-flex;align-items:center;gap:10px;margin-bottom:24px;font-size:14px;color:#D8CFBF}
.crumb a{color:#fff;font-weight:600}
.crumb a:hover{color:var(--coffee-bright)}
.crumb span{color:var(--coffee)}
.crumb em{font-style:normal;color:var(--coffee-bright);font-weight:700}
.dh-eyebrow{color:var(--coffee-bright);font-size:13px;font-weight:800;letter-spacing:.28em;margin-bottom:16px}
.dh-title{color:#fff;font-size:clamp(36px,5.6vw,64px);font-weight:900;line-height:1.14;letter-spacing:-.02em;margin-bottom:20px}
.dh-gold{color:var(--coffee);position:relative}
.dh-gold::after{content:"";position:absolute;left:0;right:0;bottom:.05em;height:.12em;background:linear-gradient(90deg,var(--coffee),transparent);border-radius:2px}
.dh-sub{color:#D8CFBF;font-size:16px;line-height:1.9;max-width:600px;margin-bottom:34px}
.dh-cta{display:flex;gap:16px;flex-wrap:wrap}
@media (max-width:640px){.dh-cta .btn{width:100%}}

/* ---------- 2. 项目背景 ---------- */
.dc-bg-sec{background:#fff}
.dc-intro{max-width:820px;margin-bottom:56px}
.dc-lead{font-size:16.5px;color:var(--text);line-height:2.0;margin-top:18px}
.dc-needs{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dc-need{
  position:relative;background:var(--coffee-bg);border-radius:20px;padding:34px 28px;
  transition:all .4s cubic-bezier(.22,.68,.4,1);
}
.dc-need:hover{transform:translateY(-8px);box-shadow:var(--shadow-md);background:#fff;border:1px solid var(--line)}
.dc-need>b{
  display:inline-block;font-size:13px;font-weight:900;letter-spacing:.16em;
  color:var(--coffee-deep);border-bottom:2px solid var(--grad-coffee);padding-bottom:6px;margin-bottom:16px;
}
.dc-need h3{font-size:18px;margin-bottom:10px}
.dc-need p{font-size:14px;color:var(--text-2);line-height:1.85}
@media (max-width:1024px){.dc-needs{grid-template-columns:1fr}}

/* ---------- 3. 交错图文行（核心叙事区） ---------- */
.dc-chall{background:var(--coffee-bg)}
.dc-row{
  display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;
  margin-bottom:72px;
}
.dc-row:last-child{margin-bottom:0}
.dc-row-flip{direction:rtl} /* 整行反向，图文左右对调 */
.dc-row-flip>*{direction:ltr}
.dc-row-media img{border-radius:24px;box-shadow:var(--shadow-md);width:100%}
.dc-row-num{
  display:block;font-size:60px;font-weight:900;line-height:1;
  color:transparent;-webkit-text-stroke:1.5px var(--coffee-deep);
  margin-bottom:18px;
}
.dc-row-text h3{font-size:26px;margin-bottom:14px}
.dc-row-text p{font-size:15.5px;color:var(--text);line-height:2}
@media (max-width:1024px){
  .dc-row,.dc-row-flip{grid-template-columns:1fr;gap:28px;margin-bottom:56px}
  .dc-row-num{font-size:44px}
}

/* ---------- 4. 解决方案三栏 ---------- */
.dc-solution{background:#fff}
.dc-sol-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.dc-sol{
  border-radius:20px;overflow:hidden;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);transition:all .45s cubic-bezier(.22,.68,.4,1);
}
.dc-sol:hover{transform:translateY(-10px);box-shadow:var(--shadow-lg);border-color:transparent}
.dc-sol img{width:100%;height:210px;object-fit:cover;transition:transform .6s}
.dc-sol:hover img{transform:scale(1.07)}
.dc-sol-body{padding:26px 24px}
.dc-sol-body span{
  display:inline-block;font-size:12px;font-weight:900;letter-spacing:.2em;
  color:#fff;background:var(--grad-coffee);padding:5px 14px;border-radius:100px;margin-bottom:14px;
}
.dc-sol-body h3{font-size:18px;margin-bottom:10px}
.dc-sol-body p{font-size:14px;color:var(--text-2);line-height:1.85}
@media (max-width:1024px){.dc-sol-grid{grid-template-columns:1fr}}

/* ---------- 5. 成果数据 ---------- */
.dc-nums{background:var(--ink);padding:90px 0}
.dc-nums-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.dc-num b{
  display:block;font-size:clamp(40px,4.8vw,60px);font-weight:900;color:#fff;
  line-height:1.1;margin-bottom:10px;font-variant-numeric:tabular-nums;
}
.dc-num b::after{content:"";display:block;width:36px;height:2px;background:var(--grad-coffee);margin:14px auto 0;border-radius:2px}
.dc-num span{color:var(--coffee-bright);font-size:14px;letter-spacing:.08em}
@media (max-width:768px){.dc-nums-inner{grid-template-columns:1fr 1fr;gap:36px}}

/* ---------- 6. 评价 ---------- */
.dc-quote{background:var(--coffee-bg)}
.dc-quote-inner{max-width:860px;margin:0 auto;text-align:center}
.dq-mark{
  font-size:72px;font-weight:900;line-height:.4;height:40px;
  background:var(--grad-coffee);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.dc-quote blockquote>p:not(.dq-mark){font-size:clamp(18px,2.2vw,24px);font-weight:600;line-height:1.9;color:var(--ink);margin-bottom:28px}
.dc-quote footer b{display:block;font-size:15px;margin-bottom:6px}
.dc-quote footer span{font-size:13px;color:var(--coffee-deep);font-weight:700}

/* ---------- 7. 相关案例 ---------- */
.dc-rel{background:#fff}
.dc-rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dc-rel-card{
  display:block;border-radius:18px;overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);background:#fff;transition:all .4s cubic-bezier(.22,.68,.4,1);
}
.dc-rel-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.dc-rel-card img{width:100%;height:190px;object-fit:cover;transition:transform .6s}
.dc-rel-card:hover img{transform:scale(1.07)}
.dc-rel-card h3{font-size:17px;padding:20px 22px 6px}
.dc-rel-card p{font-size:13px;color:var(--coffee-deep);font-weight:700;padding:0 22px 22px}
.dc-rel-card:hover h3{color:var(--coffee-deep)}
@media (max-width:1024px){.dc-rel-grid{grid-template-columns:1fr}}