/* ============================================================
   中豫建安 - 广告落地页样式（红色转化款）
   结构参考行业落地页惯例，品牌与文案均为中豫建安自有内容
   ============================================================ */
:root{
  --red:#cf3a2e; --red-d:#b92818; --red-l:#fdeeea;
  --ink:#22283a; --muted:#6a7385; --line:#eee3e0;
  --gold:#d9a441;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:#fff;line-height:1.7}
a{text-decoration:none;color:inherit}
.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* ---- 顶栏 ---- */
.lp-top{background:#fff;border-bottom:1px solid #f2e9e7;padding:12px 0;position:sticky;top:0;z-index:50}
.lp-top .container{display:flex;align-items:center;justify-content:space-between}
.lp-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:900;color:var(--red)}
.lp-logo .mark{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--red),var(--red-d));color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px}
.lp-logo small{display:block;font-size:11px;color:var(--muted);font-weight:400;letter-spacing:2px}
.lp-hotline{text-align:right;line-height:1.3}
.lp-hotline i{font-style:normal;display:block;font-size:12px;color:var(--muted)}
.lp-hotline b{font-size:22px;color:var(--red);letter-spacing:1px}

/* ---- 首屏 ---- */
.lp-hero{background:
  radial-gradient(700px 400px at 85% 10%,rgba(207,58,46,.08),transparent 60%),
  radial-gradient(500px 300px at 5% 90%,rgba(217,164,65,.10),transparent 60%),
  linear-gradient(160deg,#fdf7f5 0%,#fbeee9 55%,#f7e3dc 100%);
  padding:64px 0 56px}
.lp-hero .container{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.lp-hero h1{font-size:clamp(34px,4.5vw,52px);line-height:1.25;color:#3a2a26;letter-spacing:2px}
.lp-hero h1 .red{color:var(--red);background:linear-gradient(135deg,var(--red),var(--red-d));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.lp-ribbon{display:inline-block;margin:20px 0 16px;background:linear-gradient(135deg,var(--red),var(--red-d));color:#fff;font-size:clamp(15px,2vw,20px);font-weight:800;letter-spacing:3px;padding:10px 26px;border-radius:8px;box-shadow:0 10px 26px rgba(200,50,30,.35)}
.lp-hero .sub{color:var(--muted);font-size:15.5px;margin-bottom:26px}
.lp-hero .sub b{color:var(--red)}
.lp-hotline-big{display:flex;align-items:center;gap:14px}
.lp-hotline-big .tel{font-size:clamp(24px,3vw,34px);font-weight:900;color:var(--red);letter-spacing:1px}
.lp-hotline-big .tip{font-size:12.5px;color:var(--muted);line-height:1.5}

/* ---- 报价表单 ---- */
.lp-form-card{background:#fff;border-radius:18px;padding:30px 28px;box-shadow:0 24px 60px rgba(150,60,40,.16);border-top:5px solid var(--red)}
.lp-form-card h3{font-size:21px;text-align:center;color:#3a2a26;margin-bottom:4px}
.lp-form-card .cnt{text-align:center;color:var(--muted);font-size:13px;margin-bottom:18px}
.lp-form-card .cnt b{color:var(--red)}
.lp-form-card label{display:block;font-size:13px;color:#5a5560;font-weight:600;margin:12px 0 6px}
.lp-form-card select,.lp-form-card input{width:100%;padding:12px 14px;border:1.5px solid #eadfdb;border-radius:10px;font-size:14.5px;outline:none;background:#fdfbfa;font-family:inherit;transition:.2s}
.lp-form-card select:focus,.lp-form-card input:focus{border-color:var(--red);background:#fff;box-shadow:0 0 0 4px rgba(207,58,46,.08)}
.lp-form-card button{width:100%;margin-top:20px;padding:14px;border:none;border-radius:40px;font-size:16.5px;font-weight:800;letter-spacing:2px;color:#fff;cursor:pointer;background:linear-gradient(135deg,#e0452f,#c0301d);box-shadow:0 12px 30px rgba(200,50,30,.4);transition:.25s;font-family:inherit}
.lp-form-card button:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(200,50,30,.5)}
.lp-form-card button:disabled{opacity:.7;transform:none}
.lp-form-tip{text-align:center;font-size:12.5px;color:#9aa0ab;margin-top:12px}
.lp-ok{display:none;text-align:center;padding:34px 10px}
.lp-ok .big{font-size:44px}
.lp-ok h4{color:var(--red);font-size:19px;margin:10px 0 6px}
.lp-ok p{color:var(--muted);font-size:14px}
.lp-ok p b{color:var(--red);font-size:17px}

/* ---- 数据栏 ---- */
.lp-stats{background:linear-gradient(135deg,var(--red),var(--red-d));padding:26px 0}
.lp-stats .container{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.lp-stat{text-align:center;color:#fff}
.lp-stat b{font-size:30px;font-weight:900}
.lp-stat b span{font-size:16px;font-weight:800}
.lp-stat i{display:block;font-style:normal;font-size:12.5px;opacity:.85;letter-spacing:1px;margin-top:2px}

/* ---- 服务 ---- */
.lp-sec{padding:64px 0}
.lp-sec.alt{background:#faf7f6}
.lp-sec-head{text-align:center;margin-bottom:40px}
.lp-sec-head h2{font-size:clamp(24px,3vw,32px);color:#3a2a26;letter-spacing:1px}
.lp-sec-head h2 em{font-style:normal;color:var(--red)}
.lp-sec-head p{color:var(--muted);margin-top:8px;font-size:14.5px}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 24px;transition:.3s;position:relative;overflow:hidden}
.svc-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--red),#e8705f);transform:scaleX(0);transform-origin:left;transition:.35s}
.svc-card:hover{transform:translateY(-6px);box-shadow:0 18px 44px rgba(150,60,40,.14)}
.svc-card:hover::before{transform:scaleX(1)}
.svc-icon{font-size:32px;margin-bottom:12px}
.svc-card h3{font-size:17.5px;color:#3a2a26;margin-bottom:8px}
.svc-card>p{color:var(--muted);font-size:13.5px;margin-bottom:12px}
.svc-card ul{list-style:none}
.svc-card li{font-size:13px;color:#544a55;padding:4px 0 4px 20px;position:relative}
.svc-card li::before{content:"";position:absolute;left:2px;top:12px;width:8px;height:8px;border-radius:2px;background:linear-gradient(135deg,var(--red),#e8705f)}

/* ---- 为什么选我们 ---- */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.why{background:#fff;border-radius:14px;padding:26px 22px;text-align:center;border:1px solid var(--line)}
.why .n{width:52px;height:52px;margin:0 auto 12px;border-radius:50%;background:var(--red-l);color:var(--red);font-size:24px;display:flex;align-items:center;justify-content:center}
.why h4{font-size:16.5px;color:#3a2a26;margin-bottom:6px}
.why p{font-size:13px;color:var(--muted)}

/* ---- 底部 ---- */
.lp-foot{background:#2a211f;color:rgba(255,255,255,.55);padding:22px 0;text-align:center;font-size:12.5px}
.lp-foot a{color:rgba(255,255,255,.55)}
.lp-foot a:hover{color:#fff}

/* ---- 动画 ---- */
@keyframes fadeUp{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:none}}
.lp-hero .container>*{animation:fadeUp .7s ease both}
.lp-hero .container>*:nth-child(2){animation-delay:.15s}

/* ---- 响应式 ---- */
@media(max-width:900px){
  .lp-hero .container{grid-template-columns:1fr;gap:34px}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .lp-stats .container{grid-template-columns:repeat(3,1fr);row-gap:18px}
}
@media(max-width:560px){
  .svc-grid,.why-grid{grid-template-columns:1fr}
  .lp-stats .container{grid-template-columns:repeat(2,1fr)}
  .lp-hero{padding:44px 0}
}