/* ===== 靖江市宏昌特钢制造有限公司 · 现代工业风共享样式 ===== */
:root{
  --bg:#0e1114; --bg-2:#14181d; --panel:#181d23; --panel-2:#1f262e;
  --line:#2a323b; --line-soft:#222a32;
  --txt:#e9edf1; --muted:#9aa6b2; --muted-2:#6b7682;
  --accent:#f5a623; --accent-2:#ff7a18;
  --steel:#5b6b7a;
  --c-chem:#3da9d6;   /* 化工泵 蓝 */
  --c-metal:#f5a623;  /* 冶金 琥珀 */
  --c-power:#f2d23a;  /* 电力 电黄 */
  --r:14px; --maxw:1240px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Microsoft YaHei","PingFang SC","Segoe UI",system-ui,sans-serif;
  background:var(--bg);color:var(--txt);line-height:1.7;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.accent{color:var(--accent)}

/* 背景网格 */
.bg-grid{position:fixed;inset:0;z-index:-2;
  background:radial-gradient(1200px 600px at 80% -10%,rgba(245,166,35,.10),transparent 60%),
    radial-gradient(900px 500px at -10% 20%,rgba(91,107,122,.18),transparent 55%),var(--bg);}
.bg-grid::after{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(circle at 50% 30%,#000 30%,transparent 80%);}

/* 导航 */
header{position:fixed;top:0;left:0;right:0;z-index:50;transition:.35s;border-bottom:1px solid transparent}
header.scrolled{background:rgba(14,17,20,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.logo-mark{width:38px;height:38px;border-radius:9px;flex:none;display:grid;place-items:center;
  font-weight:800;color:#1a1206;font-size:18px;background:linear-gradient(135deg,var(--accent),var(--accent-2));
  box-shadow:0 6px 18px rgba(245,166,35,.35)}
.brand .name{font-weight:800;font-size:18px;letter-spacing:.5px}
.brand .name small{display:block;font-weight:500;font-size:11px;color:var(--muted);letter-spacing:2px}
.menu{display:flex;gap:6px;list-style:none}
.menu a{padding:9px 16px;border-radius:9px;color:var(--muted);font-size:15px;transition:.25s;position:relative}
.menu a:hover,.menu a.active{color:var(--txt);background:var(--panel-2)}
.menu a.active::after{content:"";position:absolute;left:16px;right:16px;bottom:4px;height:2px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));border-radius:2px}
.nav-cta{padding:10px 20px;border-radius:10px;font-weight:700;font-size:14px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#1a1206;transition:.25s;
  box-shadow:0 8px 22px rgba(245,166,35,.28)}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(245,166,35,.42)}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.burger span{width:24px;height:2px;background:var(--txt);border-radius:2px}

/* Hero（首页） */
.hero{position:relative;padding:150px 0 90px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border:1px solid var(--line);
  border-radius:999px;font-size:13px;color:var(--muted);background:rgba(255,255,255,.02);margin-bottom:28px}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}
.hero h1{font-size:clamp(34px,5.4vw,68px);line-height:1.12;font-weight:800;letter-spacing:1px;max-width:14ch}
.hero h1 .glow{background:linear-gradient(120deg,var(--accent),var(--accent-2) 60%,#ffd27a);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{margin:26px 0 36px;font-size:clamp(16px,1.6vw,19px);color:var(--muted);max-width:62ch}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 28px;border-radius:11px;
  font-weight:700;font-size:15px;transition:.25s;cursor:pointer;border:1px solid transparent}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#1a1206;box-shadow:0 10px 26px rgba(245,166,35,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(245,166,35,.45)}
.btn-ghost{border-color:var(--line);color:var(--txt);background:rgba(255,255,255,.02)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:64px;
  border-top:1px solid var(--line);padding-top:40px}
.stat .num{font-size:clamp(28px,3.4vw,42px);font-weight:800}
.stat .num span{color:var(--accent)}
.stat .label{color:var(--muted);font-size:14px;margin-top:4px}

/* 通用区块 */
section{padding:96px 0;position:relative}
.sec-head{margin-bottom:54px;max-width:820px}
.sec-kicker{display:inline-block;font-size:13px;letter-spacing:3px;text-transform:uppercase;
  color:var(--accent);font-weight:700;margin-bottom:14px}
.sec-kicker::before{content:"▍ ";color:var(--accent-2)}
.sec-head h2{font-size:clamp(26px,3.2vw,40px);font-weight:800;letter-spacing:.5px}
.sec-head p{color:var(--muted);margin-top:14px;font-size:16px}

/* 子页 Banner */
.subhero{position:relative;padding:140px 0 60px;overflow:hidden}
.subhero::before{content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(245,166,35,.10),transparent 50%),
    repeating-linear-gradient(135deg,rgba(255,255,255,.03) 0 2px,transparent 2px 22px)}
.subhero .crumb{font-size:13px;color:var(--muted);margin-bottom:14px}
.subhero .crumb a:hover{color:var(--accent)}
.subhero h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;letter-spacing:1px}
.subhero p{color:var(--muted);margin-top:14px;max-width:60ch;font-size:16px}

/* 关于我们 */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.about-text p{color:var(--muted);margin-bottom:18px}
.feat-list{list-style:none;margin-top:26px;display:grid;gap:14px}
.feat-list li{display:flex;gap:14px;align-items:flex-start}
.feat-ic{width:34px;height:34px;border-radius:9px;flex:none;display:grid;place-items:center;
  background:var(--panel-2);border:1px solid var(--line);color:var(--accent);font-size:16px}
.feat-list b{color:var(--txt)}
.feat-list span{display:block;color:var(--muted);font-size:14px}
.about-card{background:linear-gradient(160deg,var(--panel),var(--panel-2));border:1px solid var(--line);
  border-radius:var(--r);padding:34px;position:relative;overflow:hidden}
.about-card::before{content:"";position:absolute;top:-40%;right:-30%;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(245,166,35,.18),transparent 70%)}
.about-card h3{font-size:20px;margin-bottom:6px}
.about-card .sub{color:var(--muted);font-size:14px;margin-bottom:22px}
.kv{display:grid;gap:14px}
.kv .row{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px dashed var(--line-soft);font-size:15px}
.kv .row:last-child{border-bottom:none}
.kv .k{color:var(--muted)} .kv .v{color:var(--txt);font-weight:600}

/* 材质条 */
.matbar{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.matbar span{font-size:13px;color:var(--muted);border:1px solid var(--line);padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.02)}
.matbar span b{color:var(--accent)}

/* 产品分类 Tabs */
.cat-tabs{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:40px}
.cat-tab{padding:12px 24px;border-radius:11px;border:1px solid var(--line);background:var(--panel);
  font-weight:700;color:var(--muted);transition:.25s;cursor:pointer}
.cat-tab:hover{color:var(--txt);border-color:var(--steel)}
.cat-tab.active{color:#1a1206;background:linear-gradient(135deg,var(--accent),var(--accent-2));border-color:transparent;
  box-shadow:0 8px 20px rgba(245,166,35,.3)}
.cat-block{display:none}
.cat-block.active{display:block;animation:fade .5s ease}
@keyframes fade{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

.subcat-title{font-size:20px;font-weight:800;margin:34px 0 18px;display:flex;align-items:center;gap:12px}
.subcat-title::before{content:"";width:6px;height:22px;border-radius:3px;background:linear-gradient(var(--accent),var(--accent-2))}

/* 独立产品页的类别条 */
.cat-tab-single{padding:12px 24px;border-radius:11px;font-weight:700;color:#1a1206;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:0 8px 20px rgba(245,166,35,.3)}
.cat-tab-link{padding:12px 22px;border-radius:11px;border:1px solid var(--line);background:var(--panel);
  font-weight:700;color:var(--muted);transition:.25s;text-decoration:none}
.cat-tab-link:hover{color:var(--txt);border-color:var(--steel);text-decoration:none}

/* ===== 产品详情页 ===== */
.detail{max-width:1120px;margin:0 auto;padding:0 20px}
.detail-top{display:grid;grid-template-columns:0.92fr 1.08fr;gap:44px;align-items:center;margin:8px 0 54px}
.detail-top .shot{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:var(--panel);aspect-ratio:4/3;box-shadow:0 18px 40px rgba(0,0,0,.35)}
.detail-top .shot img{width:100%;height:100%;object-fit:cover}
.detail-top h2{font-size:clamp(26px,4vw,38px);margin:0 0 6px;line-height:1.2}
.detail-top .en{color:var(--muted);font-weight:600;letter-spacing:.5px;margin-bottom:18px}
.detail-top .lead{color:var(--muted);line-height:1.95;margin:16px 0 22px}
.detail-top .tags{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:22px}
.detail-top .tags span{padding:6px 14px;border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--txt);background:var(--panel)}
.detail-block{margin:40px 0}
.detail-block h3{font-size:22px;display:flex;align-items:center;gap:12px;margin:0 0 16px}
.detail-block h3::before{content:"";width:6px;height:22px;border-radius:3px;background:linear-gradient(var(--accent),var(--accent-2))}
.detail-block p{color:var(--muted);line-height:1.95;margin:0 0 12px}
.feature{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.feature li{position:relative;padding-left:26px;color:var(--muted);line-height:1.85}
.feature li::before{content:"★";position:absolute;left:0;color:var(--accent)}
.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.spec-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.spec-card .k{color:var(--muted);font-size:13px}
.spec-card .v{font-size:26px;font-weight:800;color:var(--txt);margin-top:4px}
.spec-card .v small{font-size:14px;color:var(--muted);font-weight:600}
.model-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.model-item{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 16px;display:flex;gap:12px;align-items:baseline}
.model-item .code{font-weight:800;color:var(--accent);font-family:ui-monospace,monospace;min-width:46px}
.model-item .desc{color:var(--muted);font-size:14px;line-height:1.6}
@media(max-width:760px){.detail-top{grid-template-columns:1fr;gap:24px}.spec-grid,.model-grid{grid-template-columns:1fr}}

.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.prod-card{background:linear-gradient(165deg,var(--panel),var(--bg-2));border:1px solid var(--line);
  border-radius:var(--r);overflow:hidden;transition:.3s;display:flex;flex-direction:column}
.prod-card:hover{transform:translateY(-6px);border-color:var(--accent)}
.pimg{height:170px;display:grid;place-items:center;position:relative;overflow:hidden}
.pimg svg{width:64px;height:64px;opacity:.9;z-index:1}
.pimg img{width:100%;height:100%;object-fit:cover;display:block;position:relative;z-index:1}
.pimg.has-img::after{opacity:.05}
.pimg::after{content:"";position:absolute;inset:0;opacity:.18;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);background-size:20px 20px}
.c-chem .pimg{background:linear-gradient(160deg,#16384a,#0e2330)}
.c-metal .pimg{background:linear-gradient(160deg,#3a2c12,#241a08)}
.c-power .pimg{background:linear-gradient(160deg,#3a3614,#221f08)}
.prod-body{padding:16px 18px 20px}
.prod-body h4{font-size:16px;font-weight:700;line-height:1.4}
.prod-body .spec{color:var(--muted);font-size:13px;margin-top:6px}
.prod-body .tag{display:inline-block;margin-top:10px;font-size:12px;color:var(--accent);
  border:1px solid var(--line);padding:3px 10px;border-radius:999px;background:rgba(245,166,35,.06)}

/* 服务中心 */
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.svc-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:26px;transition:.3s}
.svc-card:hover{border-color:var(--accent);background:var(--panel-2)}
.svc-num{font-size:13px;color:var(--muted-2);font-weight:700;letter-spacing:1px}
.svc-card h4{font-size:17px;margin:10px 0 8px}
.svc-card p{color:var(--muted);font-size:14px}
.promise{margin-top:48px;background:linear-gradient(160deg,var(--panel),var(--panel-2));
  border:1px solid var(--line);border-radius:var(--r);padding:36px}
.promise h3{font-size:20px;margin-bottom:20px}
.promise ol{color:var(--muted);padding-left:22px;display:grid;gap:10px}
.promise ol li::marker{color:var(--accent);font-weight:700}

/* 企业荣誉 */
.honor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.honor{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:26px 18px;
  text-align:center;transition:.3s}
.honor:hover{transform:translateY(-4px);border-color:var(--accent)}
.honor .medal{width:54px;height:54px;margin:0 auto 14px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#1a1206;font-size:24px;
  box-shadow:0 6px 16px rgba(245,166,35,.3)}
.honor b{font-size:15px;display:block;margin-bottom:6px}
.honor span{color:var(--muted);font-size:13px}
.honor-note{color:var(--muted);margin-top:30px;text-align:center;font-size:14px}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info .info-row{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line-soft)}
.contact-info .info-ic{width:44px;height:44px;border-radius:11px;flex:none;display:grid;place-items:center;
  background:var(--panel-2);border:1px solid var(--line);color:var(--accent);font-size:18px}
.contact-info .info-row b{display:block;color:var(--txt)}
.contact-info .info-row span{color:var(--muted);font-size:14px}
.map-box{height:340px;border-radius:var(--r);border:1px solid var(--line);overflow:hidden;
  background:linear-gradient(160deg,var(--panel),var(--panel-2));position:relative;display:grid;place-items:center}
.map-box .map-note{color:var(--muted);text-align:center;font-size:14px;padding:20px}
.map-box .map-pin{font-size:40px;margin-bottom:8px}

/* CTA 条 */
.cta{background:linear-gradient(120deg,var(--panel-2),var(--panel));border:1px solid var(--line);
  border-radius:18px;padding:54px;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(245,166,35,.16),transparent 70%)}
.cta h3{font-size:clamp(22px,2.6vw,30px);font-weight:800}
.cta p{color:var(--muted);margin-top:8px}

/* 页脚 */
footer{border-top:1px solid var(--line);background:var(--bg-2);padding:60px 0 30px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.foot-col h5{font-size:15px;margin-bottom:18px;color:var(--txt)}
.foot-col p,.foot-col a{color:var(--muted);font-size:14px;display:block;margin-bottom:10px}
.foot-col a:hover{color:var(--accent)}
.foot-brand .name{font-weight:800;font-size:18px;margin-bottom:12px}
.foot-bottom{border-top:1px solid var(--line-soft);margin-top:40px;padding-top:22px;color:var(--muted-2);
  font-size:13px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

.to-top{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:12px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#1a1206;display:grid;place-items:center;
  font-size:20px;cursor:pointer;z-index:40;opacity:0;pointer-events:none;transition:.3s;box-shadow:0 8px 22px rgba(245,166,35,.35)}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-3px)}

.reveal{opacity:0;transform:translateY(28px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

@media(max-width:980px){
  .stats{grid-template-columns:repeat(2,1fr);gap:26px}
  .about-grid{grid-template-columns:1fr;gap:32px}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .honor-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:680px){
  .menu,.nav-cta{display:none}
  .burger{display:flex}
  .menu.open{display:flex;flex-direction:column;position:absolute;top:72px;left:0;right:0;
    background:rgba(14,17,20,.97);padding:16px;border-bottom:1px solid var(--line);gap:4px}
  .prod-grid,.svc-grid{grid-template-columns:1fr}
  .honor-grid{grid-template-columns:1fr}
  .cta{padding:34px 24px}
  section{padding:70px 0}
  .about-grid{grid-template-columns:1fr}
}