/* ============================================================
   郑州建站 zhengzhou.css —— 壹捌玖网络科技
   布局：左对齐 Hero / 三栏洞察卡 / 横条本地服务行 /
   案例三卡 / 横向四步流程 / 手风琴 / CTA+区域互链
   ============================================================ */

/* ---------- 1. Hero ---------- */
.hero{
  position:relative;min-height:86vh;display:flex;align-items:center;
  overflow:hidden;background:var(--ink);
}
.hero-bg{background-position:center 30%}
.hero-veil{
  position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(90deg,rgba(20,20,20,.92) 0%,rgba(20,20,20,.6) 55%,rgba(20,20,20,.25) 100%),
    linear-gradient(0deg,rgba(20,20,20,.5),transparent 50%);
}
.hero-inner{position:relative;z-index:3;padding-top:130px;padding-bottom:90px;max-width:760px}
.crumb{display:flex;align-items:center;gap:10px;color:#C9C0AF;font-size:13px;margin-bottom:26px;opacity:0;animation:fadeUp .6s .1s ease forwards}
.crumb a{color:#EDE6DA}
.crumb a:hover{color:var(--coffee-bright)}
.crumb em{color:var(--coffee-bright);font-style:normal;font-weight:700}
.hero-title{color:#fff;font-size:clamp(36px,5.4vw,62px);font-weight:900;line-height:1.14;letter-spacing:-.02em;margin-bottom:22px}
.ht-line{display:block;overflow:hidden;opacity:0}
.ht-line:nth-child(1){animation:slideUp .75s .22s cubic-bezier(.22,.68,.4,1) forwards}
.ht-line:nth-child(2){animation:slideUp .75s .4s cubic-bezier(.22,.68,.4,1) forwards}
.ht-gold{color:var(--coffee)}
.hero-sub{color:#D8CFBF;font-size:clamp(15px,1.7vw,18px);line-height:1.9;margin-bottom:34px;opacity:0;animation:fadeUp .7s .55s ease forwards}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap;opacity:0;animation:fadeUp .7s .7s ease forwards}
@keyframes slideUp{from{opacity:0;transform:translateY(44px)}to{opacity:1;transform:none}}
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
.scroll-hint{position:absolute;left:50%;bottom:24px;transform:translateX(-50%);width:26px;height:44px;border:2px solid rgba(255,255,255,.4);border-radius:14px;z-index:4;display:flex;justify-content:center;padding-top:8px}
.scroll-hint span{width:3px;height:9px;border-radius:3px;background:#fff;animation:hintDrop 1.8s ease infinite}
@keyframes hintDrop{0%{opacity:0;transform:translateY(0)}35%{opacity:1}100%{opacity:0;transform:translateY(14px)}}
@media (max-width:640px){
  .hero{min-height:auto;padding-bottom:40px}
  .hero-cta .btn{width:100%}
  .scroll-hint{display:none}
}

/* ---------- 2. 市场洞察 ---------- */
.insight{background:#fff}
.in-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
.in-card{
  background:var(--coffee-bg);border-radius:20px;padding:34px 28px;
  transition:all .4s;position:relative;
}
.in-card:hover{background:#fff;transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.in-card b{font-size:44px;font-weight:900;color:rgba(169,136,89,.28);line-height:1;display:block;margin-bottom:14px;font-variant-numeric:tabular-nums}
.in-card h3{font-size:18px;margin-bottom:10px}
.in-card p{font-size:14px;color:var(--text-2);line-height:1.9}
@media (max-width:900px){.in-grid{grid-template-columns:1fr}}

/* ---------- 3. 本地化服务横条 ---------- */
.local{background:var(--coffee-bg)}
.lc-list{display:grid;gap:20px;margin-top:40px;max-width:960px;margin-left:auto;margin-right:auto}
.lc-row{
  display:flex;gap:24px;align-items:flex-start;background:#fff;border-radius:18px;
  padding:28px 30px;box-shadow:var(--shadow-sm);transition:all .4s;border-left:5px solid var(--coffee);
}
.lc-row:hover{transform:translateX(8px);box-shadow:var(--shadow-md)}
.lc-ic{
  flex-shrink:0;width:56px;height:56px;border-radius:16px;background:var(--ink);color:var(--coffee-bright);
  display:flex;align-items:center;justify-content:center;
}
.lc-ic svg{width:28px;height:28px}
.lc-row h3{font-size:19px;margin-bottom:6px}
.lc-row p{font-size:14px;color:var(--text-2);line-height:1.9}
@media (max-width:640px){.lc-row{flex-direction:column}}

/* ---------- 4. 案例 ---------- */
.cases{background:#fff}
.cz-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
.cz-card{
  display:block;border-radius:18px;overflow:hidden;background:var(--ink);
  box-shadow:var(--shadow-sm);transition:all .45s;
}
.cz-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.cz-card img{width:100%;height:200px;object-fit:cover;opacity:.9;transition:transform .6s}
.cz-card:hover img{transform:scale(1.06);opacity:1}
.cz-body{padding:20px 22px 22px}
.cz-body h3{color:#fff;font-size:17px;margin-bottom:6px}
.cz-body p{font-size:13px;color:#C9C0AF;line-height:1.7}
@media (max-width:1024px){.cz-grid{grid-template-columns:1fr}}

/* ---------- 5. 横向流程 ---------- */
.flow{background:linear-gradient(180deg,#fff 0%,var(--coffee-bg) 100%)}
.fw-line{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;list-style:none;margin-top:40px;counter-reset:fw}
.fw-line li{
  background:#fff;border-radius:18px;padding:28px 24px;box-shadow:var(--shadow-sm);
  border-top:4px solid var(--grad-coffee);transition:all .4s;
}
.fw-line li:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.fw-no{
  display:inline-flex;width:40px;height:40px;border-radius:50%;background:var(--grad-coffee);color:#fff;
  align-items:center;justify-content:center;font-weight:900;font-size:18px;margin-bottom:14px;
}
.fw-line h3{font-size:17px;margin-bottom:6px}
.fw-line p{font-size:13.5px;color:var(--text-2);line-height:1.8}
@media (max-width:900px){.fw-line{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.fw-line{grid-template-columns:1fr}}

/* ---------- 6. FAQ ---------- */
.faqs{background:var(--coffee-bg)}
.faq-wrap{max-width:860px}
.acc{border-top:2px solid var(--ink)}
.acc-item{border-bottom:1px solid var(--line)}
.acc-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 6px;text-align:left;font-size:16.5px;font-weight:800;color:var(--ink);background:none;transition:color .3s;
}
.acc-head:hover{color:var(--coffee-deep)}
.acc-ico{
  flex-shrink:0;width:32px;height:32px;border-radius:50%;border:1.5px solid var(--line);
  font-size:20px;font-weight:400;color:var(--coffee-deep);
  display:flex;align-items:center;justify-content:center;transition:all .35s;
}
.acc-item.open .acc-ico{background:var(--grad-coffee);border-color:transparent;color:#fff;transform:rotate(45deg)}
.acc-item.open .acc-head{color:var(--coffee-deep)}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .45s cubic-bezier(.22,.68,.4,1)}
.acc-panel p{padding:4px 4px 22px;font-size:14.5px;color:var(--text-2);line-height:1.95;max-width:720px}
.acc-panel a{color:var(--coffee-deep);font-weight:700}

/* ---------- 7. CTA ---------- */
.cta{position:relative;overflow:hidden;background:var(--ink);padding:120px 0}
.cta-bg{background-position:center 40%}
.cta-veil{position:absolute;inset:0;background:rgba(20,20,20,.8);z-index:1}
.cta-inner{position:relative;z-index:2;text-align:center}
.cta-title{color:#fff;font-size:clamp(26px,4vw,40px);font-weight:900;margin-bottom:18px}
.cta-sub{color:#D8CFBF;font-size:16px;margin-bottom:38px}
.cta-row{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-bottom:36px}
.region-links{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.region-links a{
  padding:9px 22px;border-radius:100px;font-size:13px;font-weight:700;
  border:1px solid rgba(255,255,255,.3);color:#EDE6DA;transition:all .3s;
}
.region-links a:hover{border-color:var(--coffee);color:var(--coffee-bright)}
.region-links a.on{background:var(--grad-coffee);border-color:transparent;color:#fff}
@media (max-width:640px){.cta-row .btn{width:100%}}