/* =============================================================
   case-ecommerce.css —— 电商商城案例详情专属样式
   骨架：通栏整图深色首屏 + 横排概览条 → 三笔账问题卡
        → 六格功能矩阵 → 竖向时间线 → 左文右勾选清单
        → 深色效果数据 → 评价 → 互链 → CTA
   ============================================================= */

main{padding-top:calc(var(--header-h) + var(--topbar-h))}

/* 深色区块上的 section-tag 配色（替代内联样式） */
.section-tag--light{color:var(--earth-light)}
.section-tag--light::before{background:var(--earth-light)}

/* ---------- 1. 首屏：整图深色通栏 ---------- */
.ec-hero{
  background:
    linear-gradient(180deg, rgba(42,38,32,.88) 0%, rgba(42,38,32,.72) 55%, rgba(42,38,32,.94) 100%),
    url("../images/case-ecommerce.jpg") center/cover no-repeat;
  color:#EDE7DA;padding:70px 0 0;
}
.ec-hero .breadcrumb a{color:#B9B1A2}
.ec-hero .breadcrumb .sep{color:#8F8677}
.ec-hero-kicker{font-size:12.5px;letter-spacing:.3em;color:var(--earth-light);margin:22px 0 14px}
.ec-hero-title{font-size:clamp(34px,5vw,54px);line-height:1.2;color:#F5EFE2;margin-bottom:18px}
.ec-hero-sub{font-size:15.5px;line-height:1.95;color:#C9C1B2;max-width:620px;margin-bottom:28px}
.ec-hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.ec-overview-strip{
  margin-top:56px;display:grid;grid-template-columns:repeat(4,1fr);
  background:rgba(243,239,231,.06);border:1px solid rgba(201,193,178,.22);border-bottom:none;
}
.ec-strip-item{padding:20px 22px;border-right:1px solid rgba(201,193,178,.16)}
.ec-strip-item:last-child{border-right:none}
.ec-strip-item span{display:block;font-size:11.5px;letter-spacing:.2em;color:#9A9284;margin-bottom:6px}
.ec-strip-item b{font-size:13.5px;color:#EDE7DA;font-weight:600;line-height:1.6}

/* ---------- 2. 三笔账问题卡 ---------- */
.ec-pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:10px}
.ec-pain{background:var(--paper-deep);border:1px solid var(--line);padding:30px 26px;position:relative}
.ec-pain-no{
  display:inline-block;font-family:var(--font-serif);font-size:15px;color:var(--earth-deep);
  border-bottom:2px solid var(--earth);padding-bottom:4px;margin-bottom:16px;letter-spacing:.1em;
}
.ec-pain h3{font-size:19px;margin-bottom:12px}
.ec-pain p{font-size:14px;color:var(--ink-soft);line-height:1.95}

/* ---------- 3. 功能矩阵 ---------- */
.ec-feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:10px}
.ec-feat{background:var(--paper);border:1px solid var(--line);padding:28px 24px}
.ec-feat-icon{
  display:inline-flex;width:46px;height:46px;align-items:center;justify-content:center;
  border:1px solid rgba(174,135,73,.4);color:var(--earth-deep);margin-bottom:18px;
}
.ec-feat-icon svg{width:22px;height:22px}
.ec-feat h3{font-size:17.5px;margin-bottom:10px}
.ec-feat p{font-size:13.5px;color:var(--ink-soft);line-height:1.9}

/* ---------- 4. 运营时间线 ---------- */
.ec-timeline{position:relative;padding-left:26px;display:grid;gap:34px;margin-top:14px}
.ec-timeline::before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:1px;background:var(--brown-pale)}
.ec-tl-item{position:relative}
.ec-tl-item::before{
  content:"";position:absolute;left:-26px;top:6px;width:13px;height:13px;
  background:var(--paper);border:2px solid var(--earth);border-radius:50%;
}
.ec-tl-date{
  display:inline-block;font-size:12.5px;letter-spacing:.12em;color:var(--earth-deep);
  background:rgba(174,135,73,.1);padding:3px 12px;margin-bottom:10px;
}
.ec-tl-item h3{font-size:17.5px;margin-bottom:8px}
.ec-tl-item p{font-size:14px;color:var(--ink-soft);line-height:1.95;max-width:680px}

/* ---------- 5. 左文右勾选清单 ---------- */
.ec-check-wrap{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:start}
.ec-check-copy .lead{margin:14px 0}
.ec-check-copy p{color:var(--ink-soft);line-height:1.95;margin-bottom:12px}
.ec-check-list{display:grid;gap:18px}
.ec-check-list li{
  display:flex;gap:14px;background:var(--paper);border:1px solid var(--line);padding:20px 22px;
}
.ec-check-list svg{width:20px;height:20px;flex:none;fill:var(--earth);margin-top:3px}
.ec-check-list b{font-size:14.5px;display:block;margin-bottom:6px}
.ec-check-list p{font-size:13.5px;color:var(--ink-soft);line-height:1.85}

/* ---------- 6. 深色效果数据 ---------- */
.ec-result-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(201,193,178,.15);border:1px solid rgba(201,193,178,.15)}
.ec-result{background:var(--dark);padding:30px 24px}
.ec-result .num{color:var(--earth-light)}
.ec-result p:last-child{font-size:13px;color:#C9C1B2;margin-top:12px;line-height:1.8}
.ec-result-note{margin-top:20px;font-size:12.5px;color:#8F8677;text-align:center}

/* ---------- 7. 评价 ---------- */
.container--narrow{max-width:860px}
.ec-quote-sign{margin-top:16px;font-size:13.5px;color:var(--ink-faint)}

/* ---------- 8. 相关互链 ---------- */
.ec-related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.ec-related{background:var(--paper);border:1px solid var(--line);padding:24px 20px;display:flex;flex-direction:column;gap:8px}
.ec-related h3{font-size:16.5px}
.ec-related p{font-size:13.5px;color:var(--ink-soft);line-height:1.8;flex:1}

/* ---------- 5. 门店导购线上化 ---------- */
.ec-offline-wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.ec-offline-copy .lead{margin:14px 0 16px}
.ec-offline-copy p{color:var(--ink-soft);line-height:1.95}
.ec-bullets{margin-top:14px;display:grid;gap:10px}
.ec-bullets li{position:relative;padding-left:22px;color:var(--ink-soft);line-height:1.9}
.ec-bullets li::before{content:"";position:absolute;left:0;top:11px;width:10px;height:2px;background:var(--earth)}
.ec-offline-photo img{width:100%;box-shadow:var(--shadow);border:1px solid var(--line)}
.ec-offline-tag{margin-top:12px;font-size:12.5px;color:var(--ink-faint);border-left:2px solid var(--earth);padding-left:12px}

/* ---------- 9. CTA ---------- */
.ec-cta-band{background:var(--paper-deep)}
.ec-cta-wrap{display:grid;grid-template-columns:1.4fr auto;gap:40px;align-items:center}
.ec-cta-title{font-size:clamp(24px,3vw,34px);margin:10px 0 10px}
.ec-cta-sub{color:var(--ink-soft);margin-bottom:24px}
.ec-cta-contacts{display:flex;gap:14px;flex-wrap:wrap}
.ec-cta-contact{
  display:inline-flex;align-items:center;gap:10px;background:var(--paper);
  border:1px solid var(--line);padding:12px 18px;
}
.ec-cta-contact svg{width:17px;height:17px;fill:var(--earth-deep)}
.ec-cta-contact span{display:flex;flex-direction:column;line-height:1.3;font-size:14.5px;font-weight:600}
.ec-cta-contact small{font-size:11px;color:var(--ink-faint);font-weight:400;letter-spacing:.1em}

/* ---------- 响应式 ---------- */
@media (max-width:991px){
  .ec-overview-strip{grid-template-columns:1fr 1fr}
  .ec-strip-item{border-bottom:1px solid rgba(201,193,178,.16)}
  .ec-pain-grid,.ec-feat-grid{grid-template-columns:1fr}
  .ec-check-wrap,.ec-offline-wrap{grid-template-columns:1fr;gap:32px}
  .ec-result-grid,.ec-related-grid{grid-template-columns:1fr 1fr}
  .ec-cta-wrap{grid-template-columns:1fr}
}
@media (max-width:560px){
  .ec-overview-strip,.ec-result-grid,.ec-related-grid{grid-template-columns:1fr}
}