/* ==========================================================================
   page-shangcheng.css — 商城网站开发（指纹 F6 上下开合）
   图上文下开合 hero / 手风琴清单 / 居中纵向步骤 / 印章 CTA
   ========================================================================== */

/* ===== ① 上下开合 hero ===== */
.sc-hero{position:relative;}
.sc-hero-img{height:clamp(260px,38vw,460px);overflow:hidden;}
.sc-hero-img img{width:100%;height:100%;object-fit:cover;}
.sc-hero-body{
  margin-top:-40px;position:relative;z-index:2;padding-bottom:clamp(40px,6vw,72px);
}
.sc-hero-body .container{
  background:var(--moon-50);border-radius:var(--radius-lg);box-shadow:var(--shadow-lift);
  padding:clamp(28px,4vw,52px);
}
.sc-hero-body h1{font-size:clamp(30px,4vw,48px);margin-top:12px;}
.sc-hero-body .lead{margin-top:16px;max-width:640px;}
.sc-hero-cta{display:flex;gap:14px;margin-top:24px;flex-wrap:wrap;}

/* ===== ② 定义区 ===== */
.sc-define{max-width:780px;}
.sc-define .section-desc{margin-top:14px;}
.sc-who{margin-top:56px;}
.sc-who h3{font-size:22px;margin-bottom:20px;}
.sc-who-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.sc-who-grid > div{
  background:var(--moon-50);border-radius:var(--radius);padding:22px 20px;
  border-bottom:3px solid var(--bamboo-500);
}
.sc-who-grid strong{font-size:15.5px;font-family:var(--serif);color:var(--bamboo-700);}
.sc-who-grid p{font-size:13.5px;color:var(--ink-500);margin-top:8px;line-height:1.8;}

/* ===== ③ 手风琴清单 ===== */
.sc-list-bg{background:var(--moon-100);border-block:1px solid var(--line-soft);}
.sc-list{margin-top:36px;max-width:860px;margin-inline:auto;}
.sc-list details{
  background:#fff;border-radius:var(--radius);margin-bottom:12px;box-shadow:var(--shadow-soft);
  overflow:hidden;
}
.sc-list summary{
  cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;
  padding:20px 26px;font-family:var(--serif);font-weight:700;font-size:18px;color:var(--ink-900);
}
.sc-list summary::-webkit-details-marker{display:none;}
.sc-list-mark{
  width:30px;height:30px;border-radius:50%;background:var(--moon-200);
  display:inline-flex;align-items:center;justify-content:center;color:var(--bamboo-700);
  font-size:18px;font-weight:400;flex-shrink:0;font-family:var(--sans);
}
.sc-list details[open] .sc-list-mark{background:var(--cinnabar-500);color:#fff;transform:rotate(45deg);}
.sc-list details p{padding:0 26px 22px;color:var(--ink-700);font-size:15px;line-height:1.9;}

/* ===== ④ 居中纵向步骤 ===== */
.sc-flow{margin-top:40px;max-width:560px;margin-inline:auto;}
.sc-flow li{
  display:flex;gap:22px;align-items:flex-start;position:relative;padding-bottom:28px;
}
.sc-flow li:not(:last-child)::before{
  content:"";position:absolute;left:23px;top:48px;bottom:0;width:2px;background:var(--moon-300);
}
.sc-flow li > span{
  width:48px;height:48px;flex-shrink:0;border-radius:50%;
  background:var(--bamboo-500);color:var(--moon-50);font-family:var(--serif);font-weight:700;
  display:flex;align-items:center;justify-content:center;font-size:19px;
}
.sc-flow li h3{font-size:17.5px;}
.sc-flow li p{font-size:14px;color:var(--ink-500);margin-top:4px;line-height:1.8;}

/* ===== ⑤ 交付 ===== */
.sc-deliver-bg{background:var(--bamboo-700);}
.sc-deliver-bg .kicker{color:var(--cinnabar-400);}
.sc-deliver-bg .kicker::before{background:var(--cinnabar-400);}
.sc-deliver-bg .section-title{color:var(--moon-100);}
.sc-deliver{display:grid;grid-template-columns:1fr 1.4fr;gap:36px;}
.sc-deliver-cells{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.sc-deliver-cells > div{
  background:rgba(247,245,238,.07);border-radius:var(--radius);padding:18px 20px;
}
.sc-deliver-cells strong{color:var(--moon-100);font-size:15px;font-family:var(--serif);}
.sc-deliver-cells p{color:rgba(247,245,238,.7);font-size:13.5px;margin-top:6px;line-height:1.8;}

/* ===== ⑥ 案例 ===== */
.sc-cases{margin-top:36px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.sc-case{
  background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-soft);
  display:block;transition:transform .28s ease;
}
.sc-case:hover{transform:translateY(-4px);}
.sc-case img{aspect-ratio:16/10;object-fit:cover;width:100%;}
.sc-case h3{font-size:16.5px;padding:16px 18px 0;}
.sc-case p{font-size:13.5px;color:var(--ink-500);padding:6px 18px 18px;}

/* ===== ⑦ 相关服务 ===== */
.sc-relate-bg{background:var(--moon-50);border-top:1px solid var(--line-soft);}
.sc-relate{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px;}
.sc-relate a{
  padding:10px 22px;background:#fff;border:1px solid var(--bamboo-300);border-radius:999px;
  color:var(--bamboo-700);font-size:14px;
}
.sc-relate a:hover{background:var(--bamboo-500);color:#fff;border-color:var(--bamboo-500);}

/* ===== ⑧ FAQ 三卡 ===== */
.sc-faq{margin-top:36px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.sc-faq-card{
  padding:28px 24px;border:1px solid var(--line-soft);border-radius:var(--radius-lg);
  background:var(--moon-50);position:relative;
}
.sc-faq-card::before{
  content:"问";position:absolute;top:18px;right:20px;font-family:var(--serif);
  font-size:38px;color:var(--moon-300);line-height:1;
}
.sc-faq-card h3{font-size:16.5px;line-height:1.65;padding-right:40px;}
.sc-faq-card p{font-size:14px;color:var(--ink-500);margin-top:14px;line-height:1.9;}

/* ===== ⑨ CTA 月白柔板 ===== */
.sc-cta{background:var(--moon-200);text-align:center;}
.sc-cta-inner{padding-block:clamp(48px,7vw,88px);}
.sc-cta-seal{font-size:16px;padding:.5em .8em;margin-bottom:18px;}
.sc-cta h2{font-size:clamp(22px,2.8vw,34px);}
.sc-cta p{margin-top:10px;color:var(--ink-500);}
.sc-cta-btns{margin-top:24px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}

/* ===== 响应式 ===== */
@media (max-width:1080px){
  .sc-who-grid{grid-template-columns:1fr 1fr;}
  .sc-deliver,.sc-deliver-cells{grid-template-columns:1fr;}
  .sc-cases,.sc-faq{grid-template-columns:1fr 1fr;}
}
@media (max-width:680px){
  .sc-who-grid,.sc-cases,.sc-faq{grid-template-columns:1fr;}
}