/* ZHENGYAO STEEL — EN export site shared styles (en.css) */
:root{--navy:#0A2440;--navy-deep:#061626;--gold:#C9A227;--gold-soft:#D9B957;--gold-dark:#A9861D;
--ink:#1A2A3A;--muted:#5D7186;--line:#E3E9EF;--radius:10px;--shadow:0 8px 28px rgba(6,26,46,.10);
--wa:#25D366;--wa-dark:#1DA851;--max:1180px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Arial,"Helvetica Neue",Helvetica,sans-serif;color:var(--ink);line-height:1.7;background:#fff;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{color:var(--navy);line-height:1.3;font-weight:700}
p{margin:0}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
section{padding:56px 0}
.kicker{display:inline-block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-dark);font-weight:700;margin-bottom:10px}
.sec-h{font-size:clamp(24px,3vw,34px);margin-bottom:12px}
.sec-h::before{content:"";display:block;width:46px;height:4px;background:var(--gold);border-radius:2px;margin-bottom:14px}
.sec-p{color:var(--muted);max-width:760px}

/* section textures — industrial, static, no animation */
.tex-soft{background:#F7F9FB;background-image:linear-gradient(rgba(6,26,46,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(6,26,46,.035) 1px,transparent 1px);background-size:34px 34px}
.band-cta{position:relative;background:linear-gradient(115deg,#061A2E 0%,#0B2C4C 60%,#0E3A61 100%);color:#fff;overflow:hidden;border-top:3px solid var(--gold)}
.band-cta::before{content:"";position:absolute;inset:0;background:url(../img/steel-warehouse-lecong.webp) center/cover no-repeat;opacity:.14}
.band-cta::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(-55deg,rgba(255,255,255,.035) 0 2px,transparent 2px 16px)}
.band-cta .wrap{position:relative;z-index:2}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border-radius:var(--radius);font-size:15px;font-weight:700;cursor:pointer;border:0;transition:.2s;white-space:nowrap}
.btn-wa{background:var(--wa);color:#fff}
.btn-wa:hover{background:var(--wa-dark)}
.btn-line{border:1px solid var(--line);color:var(--ink);background:#fff}
.btn-line:hover{border-color:var(--gold);color:var(--gold-dark)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:#123255}
.btn-gold{background:var(--gold);color:#231A05}
.btn-gold:hover{background:var(--gold-dark);color:#fff}

/* topbar / nav */
.topbar{background:var(--navy-deep);color:#A9BDD2;font-size:13px}
.topbar .wrap{display:flex;gap:22px;align-items:center;height:38px;flex-wrap:wrap}
.topbar b{color:var(--gold-soft);font-weight:600}
.topbar .sp{margin-left:auto}
.topbar a:hover{color:#fff}
.nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:22px;height:86px}
.brand{display:flex;align-items:center;flex:0 0 auto}
.brand img{height:60px;width:auto}
.menu{display:flex;gap:20px;font-size:15px;color:var(--ink);margin-left:8px;flex-wrap:wrap}
.menu a{position:relative;padding:6px 0;font-weight:500}
.menu a:hover{color:var(--gold-dark)}
.menu a.on{color:var(--gold-dark);font-weight:700}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-tel{font-size:14px;font-weight:700;color:var(--navy);white-space:nowrap}
.nav-tel small{display:block;font-weight:400;font-size:11px;color:var(--muted)}

/* hero */
.hero{position:relative;background:var(--navy);color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:url(../img/lecong-steel-world-gate.webp) center/cover no-repeat;opacity:.62}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(4,18,32,.95) 0%,rgba(7,26,46,.88) 45%,rgba(8,30,52,.5) 100%),repeating-linear-gradient(0deg,rgba(255,255,255,.04) 0 1px,transparent 1px 44px),repeating-linear-gradient(90deg,rgba(255,255,255,.04) 0 1px,transparent 1px 44px)}
.hero .wrap{position:relative;z-index:2;padding:70px 20px 60px}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.06em;color:var(--gold-soft);border:1px solid rgba(201,164,76,.42);padding:5px 14px;border-radius:99px;margin-bottom:22px}
.hero h1{font-size:clamp(28px,4vw,46px);color:#fff;line-height:1.22;letter-spacing:-.3px}
.hero h1 em{font-style:normal;color:var(--gold-soft)}
.hero .sub{margin-top:18px;font-size:clamp(15px,1.5vw,17px);color:#C8D7E6;max-width:700px;line-height:1.85}
.hero .acts{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap}
.hero .tips{margin-top:26px;display:flex;gap:24px;flex-wrap:wrap;font-size:14px;color:#A9BDD2}
.hero .tips i{width:6px;height:6px;border-radius:50%;background:var(--gold);display:inline-block;margin-right:7px}

/* product grid */
.grid-p{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:26px}
.grid-p a{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:.2s;display:block}
.grid-p a:hover{border-color:var(--gold);box-shadow:var(--shadow);transform:translateY(-2px)}
.grid-p img{aspect-ratio:4/3;object-fit:cover;width:100%}
.grid-p b{display:block;padding:11px 13px 2px;font-size:14.5px;color:var(--navy)}
.grid-p span{display:block;padding:0 13px 12px;font-size:12.5px;color:var(--muted)}

/* split sections */
.split{display:grid;grid-template-columns:1.1fr 1fr;gap:36px;align-items:center}
.split img{border-radius:var(--radius);box-shadow:var(--shadow)}
.check{margin-top:16px}
.check li{list-style:none;padding:7px 0 7px 30px;position:relative;color:var(--ink);font-size:15px}
.check li::before{content:"";position:absolute;left:0;top:12px;width:18px;height:18px;border-radius:50%;background:var(--gold);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E");background-size:12px;background-repeat:no-repeat;background-position:center}

/* FAQ */
.faq-i{border-bottom:1px solid var(--line);padding:14px 0}
.faq-i h3{font-size:16px;cursor:pointer;position:relative;padding-right:34px}
.faq-i h3::after{content:"+";position:absolute;right:4px;top:-2px;font-size:22px;color:var(--gold-dark);font-weight:400}
.faq-i.on h3::after{content:"−"}
.faq-i .a{display:none;padding-top:10px;color:var(--muted);font-size:15px;line-height:1.8}
.faq-i.on .a{display:block}

/* tables */
.tbl{width:100%;border-collapse:collapse;margin-top:18px;font-size:14.5px}
.tbl th{background:var(--navy);color:#fff;text-align:left;padding:10px 12px;font-size:13px;letter-spacing:.03em}
.tbl td{border:1px solid var(--line);padding:9px 12px}
.tbl tr:nth-child(even) td{background:#F7F9FB}
.note{margin-top:12px;font-size:13px;color:var(--muted);background:#F7F9FB;border-left:3px solid var(--gold);padding:10px 14px;border-radius:0 8px 8px 0}

/* article / news */
.news-g{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}
.news-g a{border:1px solid var(--line);border-radius:var(--radius);padding:20px;background:#fff;transition:.2s;display:block}
.news-g a:hover{border-color:var(--gold);box-shadow:var(--shadow)}
.news-g .cat{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--gold-dark);font-weight:700}
.news-g b{display:block;margin-top:8px;font-size:16px;color:var(--navy);line-height:1.45}
.news-g p{margin-top:8px;font-size:13.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.art{max-width:820px}
.art .meta{font-size:13px;color:var(--muted);margin:10px 0 26px}
.art h2{font-size:21px;margin:30px 0 12px}
.art p{margin:12px 0;color:#2A3B4D;line-height:1.9}
.art ul,.art ol{margin:12px 0 12px 22px;color:#2A3B4D;line-height:1.9}
.art li{margin:6px 0}
.art a{color:var(--gold-dark);text-decoration:underline}
.art table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px}
.art th{background:var(--navy);color:#fff;text-align:left;padding:9px 12px}
.art td{border:1px solid var(--line);padding:8px 12px}
.cta-inline{display:inline-block;margin-top:18px;font-weight:700}
.art-nav{display:flex;justify-content:space-between;gap:14px;margin-top:44px;padding-top:22px;border-top:1px solid var(--line)}
.art-nav a{font-size:14px;color:var(--gold-dark);font-weight:600}

/* contact / inquiry */
.inq-g{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.form label{display:block;font-size:13px;font-weight:700;color:var(--navy);margin:14px 0 6px}
.form input,.form select,.form textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:11px 13px;font-size:15px;font-family:inherit;background:#fff}
.form input:focus,.form textarea:focus{outline:2px solid var(--gold-soft);border-color:var(--gold)}
.form .btn{width:100%;margin-top:18px}
.contact-card{background:var(--navy);color:#fff;border-radius:var(--radius);padding:28px}
.contact-card h3{color:#fff;font-size:19px}
.contact-card a{color:#fff;font-weight:700}
.contact-card .row{display:flex;gap:12px;align-items:flex-start;margin-top:18px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14)}
.contact-card .row i{font-style:normal;width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.contact-card .row small{display:block;color:#9FB4C9;font-size:12.5px;font-weight:400}
.map-box{margin-top:26px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);line-height:0}
.map-box iframe{width:100%;height:340px;border:0;filter:grayscale(15%)}

/* footer / float */
footer{background:var(--navy-deep);color:#8FA5BB;font-size:13px;padding:34px 0 24px}
footer .wrap{display:flex;gap:20px;flex-wrap:wrap;align-items:flex-start;justify-content:space-between}
footer h4{color:#fff;font-size:14px;margin-bottom:8px}
footer a:hover{color:var(--gold-soft)}
footer .fcol{max-width:340px}
footer .flinks{display:flex;gap:8px 18px;flex-wrap:wrap}
footer .legal{width:100%;border-top:1px solid rgba(255,255,255,.12);padding-top:16px;margin-top:8px;display:flex;gap:16px;flex-wrap:wrap;justify-content:space-between}
.float{position:fixed;right:18px;bottom:22px;z-index:90;display:flex;flex-direction:column;gap:10px}
.float a,.float button{width:54px;height:54px;border-radius:50%;border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 20px rgba(6,26,46,.28);transition:.2s}
.float .f-wa{background:var(--wa);color:#fff}
.float .f-wa:hover{background:var(--wa-dark);transform:translateY(-2px)}
.float .f-mail{background:#fff;color:var(--navy)}
.float .f-mail:hover{transform:translateY(-2px);color:var(--gold-dark)}
.float .f-top{background:rgba(6,26,46,.72);color:#fff;font-size:20px;opacity:0;pointer-events:none}
.float .f-top.on{opacity:1;pointer-events:auto}

/* responsive */
@media(max-width:980px){
  .menu{display:none}
  .grid-p{grid-template-columns:repeat(3,1fr)}
  .news-g{grid-template-columns:1fr 1fr}
  .split,.inq-g{grid-template-columns:1fr;gap:24px}
  .nav .wrap{height:66px}
  .brand img{height:42px}
  .nav-tel{display:none}
}
@media(max-width:640px){
  section{padding:42px 0}
  .grid-p{grid-template-columns:1fr 1fr}
  .news-g{grid-template-columns:1fr}
  .topbar .sp{display:none}
  .topbar .wrap{height:auto;padding:8px 0;font-size:12px}
  .nav .wrap{height:60px;justify-content:space-between}
  .brand img{height:38px}
  .hero .wrap{padding:48px 20px 44px}
  .float{right:12px;bottom:14px}
  .map-box iframe{height:260px}
}