/* Hebei Shanghe - shared stylesheet (all pages) */
:root{
  --navy:#0d3355;
  --navy-dark:#082440;
  --navy-light:#17527f;
  --orange:#f26a1b;
  --orange-dark:#d9550c;
  --blue:#1667a8;
  --bg:#f4f6f9;
  --line:#e2e8ef;
  --text:#26313d;
  --muted:#6b7d90;
  /* 页头高度：桌面 78 / 窄屏 70，下面所有依赖它的地方都引用这个变量，
     不要再写死像素，否则窄屏抽屉菜单会和页头错开 */
  --hdrH:78px;
}
/* MOBILE-STICKY-NAV
   统一 border-box：原来全站一个 box-sizing 都没有，content-box 下
   「width:100% + 左右 padding」的元素会横向溢出（hero 询价卡的按钮就是这样）。 */
*,*::before,*::after{box-sizing:border-box}

/* overflow-x 一定要用 clip 而不是 hidden：
   hidden 会让 html/body 变成滚动容器，position:sticky 的页头就相对这个
   不滚动的容器定位，于是滚页面时页头直接跟着走 —— 主导航消失就是这个原因。
   clip 只裁剪、不产生滚动容器，sticky 正常，横向也不会出滚动条。
   （旧浏览器不支持 clip 时会退化成 visible；横向溢出的真实来源已逐个修掉。） */
html{
  scroll-behavior:smooth;overflow-x:clip;
  -webkit-text-size-adjust:100%;text-size-adjust:100%;
  /* 吸顶页头生效后，页内锚点（about.html#factory 等）要留出页头高度 */
  scroll-padding-top:calc(var(--hdrH) + 16px);
}
body{
  font-family:"Segoe UI","Helvetica Neue",Arial,"Microsoft YaHei",sans-serif;
  color:var(--text);background:#fff;line-height:1.65;font-size:15px;
  -webkit-font-smoothing:antialiased;overflow-x:clip;width:100%;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.wrap{max-width:1220px;margin:0 auto;padding:0 20px}

/* ---------- top bar ---------- */
.topbar{background:var(--navy-dark);color:#b9cddd;font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:38px;gap:20px}
.topbar b{color:#fff;font-weight:600}
.topbar .tb-left,.topbar .tb-right{display:flex;gap:22px;flex-wrap:wrap;align-items:center}
.topbar a:hover{color:#fff}
.topbar .badge{color:#7fd6a8}
.langs{display:flex;gap:13px;align-items:center}
.langs .lan{display:flex;align-items:center;gap:6px;font-size:12.5px;opacity:.68;transition:.2s;white-space:nowrap}
.langs .lan:hover{opacity:1}
.langs .lan.on{opacity:1;color:#ffb37a;font-weight:600}
.langs .fg{width:18px;height:12px;border-radius:2px;flex:0 0 auto;position:relative;box-shadow:0 0 0 1px rgba(255,255,255,.28)}
.langs .fg-cn{background:#de2910}
.langs .fg-cn::after{
  content:"";position:absolute;left:3px;top:3px;width:4px;height:4px;background:#ffde00;
  border-radius:50%;box-shadow:4px 0 0 0 #ffde00,8px 0 0 0 #ffde00;
}
.langs .fg-en{background:#012169;overflow:hidden}
.langs .fg-en::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to bottom right,transparent 42%,#fff 42%,#fff 58%,transparent 58%);
}
.langs .fg-en::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top right,transparent 42%,#c8102e 42%,#c8102e 58%,transparent 58%);
}

/* ---------- header ---------- */
.header{background:#fff;position:sticky;top:0;z-index:900;transition:box-shadow .25s}
.header.scrolled{box-shadow:0 2px 18px rgba(8,36,64,.12)}
.header .wrap{display:flex;align-items:center;justify-content:space-between;height:var(--hdrH)}
.logo{display:flex;align-items:center;gap:12px}
.logo .mark{
  width:46px;height:46px;border-radius:6px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--navy-light),var(--navy-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:19px;letter-spacing:-.5px;
}
.logo .txt strong{display:block;font-size:21px;letter-spacing:1.5px;color:var(--navy);line-height:1.15;font-weight:800}
.logo .txt span{display:block;font-size:10.5px;letter-spacing:1.6px;color:var(--muted);text-transform:uppercase}
.nav{display:flex;align-items:center;gap:2px}
.nav>li>a{
  display:block;padding:0 15px;line-height:var(--hdrH);font-size:14.5px;font-weight:600;
  color:#2c3a48;text-transform:uppercase;letter-spacing:.4px;position:relative;
}
.nav>li>a::after{
  content:"";position:absolute;left:15px;right:15px;bottom:22px;height:2px;
  background:var(--orange);transform:scaleX(0);transition:transform .22s;
}
.nav>li>a:hover::after,.nav>li>a.active::after{transform:scaleX(1)}
.nav>li>a:hover,.nav>li>a.active{color:var(--navy)}
.nav .cta{
  margin-left:16px;padding:0 22px;line-height:44px;background:var(--orange);color:#fff;
  border-radius:4px;font-size:14px;font-weight:700;letter-spacing:.4px;white-space:nowrap;
}
.nav .cta:hover{background:var(--orange-dark)}
.nav .cta::after{display:none}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:5px;background:#fff;cursor:pointer}
.burger span{display:block;width:20px;height:2px;background:var(--navy);margin:4px auto}

/* dropdown */
.has-drop{position:relative}
.drop{
  position:absolute;top:var(--hdrH);left:0;min-width:250px;background:#fff;
  border-top:3px solid var(--orange);box-shadow:0 12px 28px rgba(8,36,64,.14);
  opacity:0;visibility:hidden;transform:translateY(8px);transition:.2s;padding:6px 0;
}
.has-drop:hover .drop{opacity:1;visibility:visible;transform:translateY(0)}
.drop a{display:block;padding:11px 20px;font-size:14px;color:#33424f;border-bottom:1px solid #f1f4f8}
.drop a:last-child{border-bottom:0}
.drop a:hover{background:#f6f9fc;color:var(--blue);padding-left:26px}

/* ---------- hero ---------- */
.hero{position:relative;height:600px;overflow:hidden;background:var(--navy-dark)}
.hero .slide{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:0;transition:opacity 1.1s ease;transform:scale(1.04);
}
.hero .slide.on{opacity:1;transform:scale(1);transition:opacity 1.1s ease, transform 7s linear}
.hero::after{
  content:"";position:absolute;inset:0;z-index:2;
  background:linear-gradient(100deg,rgba(6,26,46,.92) 0%,rgba(6,26,46,.78) 38%,rgba(6,26,46,.35) 70%,rgba(6,26,46,.55) 100%);
}
.hero .inner{position:relative;z-index:3;height:100%;display:flex;align-items:center}
.hero .inner>.wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center;width:100%}
.hero .copy{max-width:700px;color:#fff}
.hero .pills{display:flex;flex-wrap:wrap;gap:7px;margin:-8px 0 22px}
.hero .pills b{
  font-size:12px;font-weight:600;letter-spacing:.3px;padding:5px 11px;border-radius:3px;
  background:rgba(255,255,255,.11);border:1px solid rgba(255,255,255,.24);color:#e6eff7;
}
/* ---- hero quote card ---- */
.qcard{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.2);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  border-radius:10px;padding:26px 26px 24px;color:#fff;
  box-shadow:0 20px 50px rgba(0,0,0,.3);
}
.qcard>b{display:block;font-size:19px;font-weight:800;margin-bottom:4px;letter-spacing:-.2px}
.qcard>.qs{display:block;font-size:12.5px;color:#a8c1d6;margin-bottom:18px}
.qcard ul{display:grid;gap:13px;margin-bottom:22px}
.qcard li{display:flex;gap:11px;align-items:flex-start}
.qcard li i{
  flex:0 0 20px;height:20px;border-radius:50%;background:rgba(242,106,27,.9);color:#fff;
  font-style:normal;font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.qcard li strong{display:block;font-size:14px;font-weight:700;line-height:1.35}
.qcard li span{display:block;font-size:12.3px;color:#b3c8db;line-height:1.4}
.qcard .btn{width:100%;justify-content:center}
.qcard .wln{
  display:flex;align-items:center;justify-content:center;gap:8px;margin-top:11px;height:46px;
  border-radius:4px;background:#25d366;color:#fff;font-size:14.5px;font-weight:700;transition:.2s;
}
.qcard .wln:hover{background:#1eb757;transform:translateY(-2px)}
.qcard .wln svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.btn-wa{background:#25d366;color:#fff}
.btn-wa:hover{background:#1eb757;transform:translateY(-2px)}
.btn-wa svg{width:19px;height:19px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.hero .kicker{
  display:inline-block;font-size:12.5px;letter-spacing:2.4px;text-transform:uppercase;
  color:#ffd9bd;border-left:3px solid var(--orange);padding:2px 0 2px 12px;margin-bottom:20px;font-weight:600;
}
.hero h1{font-size:50px;line-height:1.14;font-weight:800;letter-spacing:-.6px;margin-bottom:20px}
.hero h1 em{font-style:normal;color:#ffb37a}
.hero p{font-size:17px;color:#d6e2ec;max-width:620px;margin-bottom:32px}
.hero .btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:0 30px;height:52px;border-radius:4px;
  font-size:15px;font-weight:700;letter-spacing:.3px;transition:.2s;border:0;cursor:pointer;
}
.btn-orange{background:var(--orange);color:#fff}
.btn-orange:hover{background:var(--orange-dark);transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border:1.5px solid rgba(255,255,255,.55)}
.btn-ghost:hover{background:#fff;color:var(--navy)}
.dots{position:absolute;z-index:4;bottom:26px;left:0;right:0}
.dots .wrap{display:flex;gap:9px}
.dots i{width:34px;height:4px;background:rgba(255,255,255,.35);cursor:pointer;border-radius:2px;transition:.2s}
.dots i.on{background:var(--orange);width:52px}

/* ---------- stat strip ---------- */
.stats{background:var(--navy);color:#fff}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.stats div{padding:26px 20px;text-align:center;border-right:1px solid rgba(255,255,255,.12)}
.stats div:last-child{border-right:0}
.stats strong{display:block;font-size:32px;font-weight:800;color:#fff;line-height:1.1}
.stats strong small{font-size:16px;font-weight:600;color:#ffb37a}
.stats span{font-size:13px;color:#a9c2d6;letter-spacing:.5px}

/* ---------- section chrome ---------- */
section{padding:74px 0}
.sec-head{text-align:center;max-width:760px;margin:0 auto 46px}
.sec-head .tag{
  display:inline-block;font-size:12px;letter-spacing:2.2px;text-transform:uppercase;
  color:var(--orange);font-weight:700;margin-bottom:12px;
}
.sec-head h2{font-size:33px;font-weight:800;color:var(--navy);line-height:1.25;letter-spacing:-.3px}
.sec-head h2::after{
  content:"";display:block;width:52px;height:3px;background:var(--orange);margin:16px auto 0;
}
.sec-head p{color:var(--muted);margin-top:16px;font-size:15.5px}
.gray{background:var(--bg)}

/* ---------- categories ---------- */
.cats{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.cat{
  position:relative;height:330px;border-radius:8px;overflow:hidden;background:var(--navy-dark);
  display:flex;align-items:flex-end;
}
.cat img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s}
.cat:hover img{transform:scale(1.07)}
.cat .veil{position:absolute;inset:0;background:linear-gradient(0deg,rgba(6,26,46,.93) 8%,rgba(6,26,46,.35) 55%,rgba(6,26,46,.05) 100%)}
.cat .cc{position:relative;z-index:2;padding:28px;color:#fff}
.cat h3{font-size:22px;font-weight:700;margin-bottom:6px}
.cat p{font-size:13.5px;color:#c3d4e1;margin-bottom:14px}
.cat .more{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;
  color:#ffb37a;
}
.cat:hover .more{color:#fff}

/* ---------- product filter + grid ---------- */
.tabs{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-bottom:38px}
.tabs button{
  padding:11px 24px;border:1.5px solid var(--line);background:#fff;border-radius:40px;
  font-size:14px;font-weight:600;color:#4a5a6a;cursor:pointer;transition:.2s;font-family:inherit;
}
.tabs button:hover{border-color:var(--blue);color:var(--blue)}
.tabs button.on{background:var(--navy);border-color:var(--navy);color:#fff}
.prods{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.prod{
  border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff;
  transition:.25s;display:flex;flex-direction:column;
}
.prod:hover{box-shadow:0 14px 32px rgba(8,36,64,.13);transform:translateY(-4px);border-color:#cfdce8}
.prod .ph{height:212px;background:#fbfcfd;display:flex;align-items:center;justify-content:center;overflow:hidden;border-bottom:1px solid var(--line)}
.prod .ph img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.prod .ph.contain img{object-fit:contain;padding:14px}
.prod:hover .ph img{transform:scale(1.06)}
.prod .pb{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.prod .cls{font-size:11.5px;letter-spacing:1.5px;text-transform:uppercase;color:var(--orange);font-weight:700;margin-bottom:7px}
.prod h3{font-size:16.5px;font-weight:700;color:var(--navy);margin-bottom:8px;line-height:1.35}
.prod p{font-size:13.5px;color:var(--muted);flex:1}
.prod.hide{display:none}
/* ---- spec rows (what buyers actually scan for) ---- */
.prod .spec{
  border-top:1px dashed var(--line);margin-top:14px;padding-top:12px;display:grid;gap:7px;
}
.prod .spec li{display:flex;justify-content:space-between;gap:10px;font-size:12.4px;line-height:1.3}
.prod .spec span{color:#94a5b6;letter-spacing:.2px;white-space:nowrap}
.prod .spec b{color:#33455a;font-weight:700;text-align:right}
.prod .gq{
  margin-top:15px;height:40px;border-radius:4px;border:1.5px solid var(--navy);color:var(--navy);
  background:#fff;font-size:13px;font-weight:700;letter-spacing:.4px;
  display:flex;align-items:center;justify-content:center;gap:7px;transition:.2s;cursor:pointer;
}
.prod .gq::after{content:"\2192";font-size:15px;transition:transform .2s}
.prod .gq:hover{background:var(--orange);border-color:var(--orange);color:#fff}
.prod:hover .gq::after{transform:translateX(4px)}

/* ---- technical spec table ---- */
.tbl{background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.tbl table{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{
  background:var(--navy);color:#fff;text-align:left;padding:14px 20px;font-size:13px;
  font-weight:700;letter-spacing:1.2px;text-transform:uppercase;
}
.tbl td{padding:13px 20px;border-bottom:1px solid var(--line);vertical-align:top;color:#40505f}
.tbl tr:last-child td{border-bottom:0}
.tbl tr:nth-child(even) td{background:#fafcfe}
.tbl td:first-child{
  width:31%;font-weight:700;color:var(--navy);background:#f4f7fa!important;
}
.tbl td b{color:var(--navy)}
.rfq{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:34px}
.rfq div{background:#fff;border:1px solid var(--line);border-radius:8px;padding:22px 20px;position:relative}
.rfq i{
  position:absolute;top:-13px;left:20px;width:28px;height:28px;border-radius:50%;background:var(--orange);
  color:#fff;font-style:normal;font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center;
}
.rfq h4{font-size:15px;font-weight:700;color:var(--navy);margin-bottom:6px}
.rfq p{font-size:13.3px;color:var(--muted);line-height:1.55}
.center{text-align:center;margin-top:42px}

/* ---------- about ---------- */
.about{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.about .imgs{position:relative}
/* 门头照片里公司名称招牌在右侧，取景窗口右移，别把新公司名裁掉 */
.about .imgs .main{width:100%;height:430px;object-fit:cover;object-position:100% center;border-radius:8px}
/* 叠加的车间小图挪到左下，避免压住门口的公司名称牌 */
.about .imgs .over{
  position:absolute;left:-26px;bottom:-26px;right:auto;width:250px;height:170px;object-fit:cover;
  border:6px solid #fff;border-radius:8px;box-shadow:0 14px 30px rgba(8,36,64,.2);
}
.about .yr{
  position:absolute;left:-14px;top:-14px;background:var(--orange);color:#fff;
  padding:16px 20px;border-radius:6px;text-align:center;box-shadow:0 10px 24px rgba(242,106,27,.35);
}
.about .yr b{display:block;font-size:30px;font-weight:800;line-height:1}
.about .yr span{font-size:11px;letter-spacing:1.4px;text-transform:uppercase}
.about h2{font-size:30px;font-weight:800;color:var(--navy);line-height:1.3;margin-bottom:8px}
.about .tag{font-size:12px;letter-spacing:2.2px;text-transform:uppercase;color:var(--orange);font-weight:700;display:block;margin-bottom:8px}
.about p{color:#4d5c6b;margin-bottom:16px;font-size:15px}
.about ul{margin:22px 0 28px;display:grid;gap:11px}
.about li{display:flex;gap:11px;font-size:14.5px;color:#3c4c5c}
.about li::before{
  content:"\2713";flex:0 0 20px;height:20px;background:#e8f3ec;color:#1f8a4c;
  border-radius:50%;font-size:12px;display:flex;align-items:center;justify-content:center;font-weight:800;margin-top:3px;
}
.mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;border-top:1px solid var(--line);padding-top:24px}
.mini-stats b{display:block;font-size:25px;font-weight:800;color:var(--navy)}
.mini-stats span{font-size:12.5px;color:var(--muted)}

/* ---------- advantages ---------- */
.advs{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.adv{
  background:#fff;border:1px solid var(--line);border-radius:8px;padding:32px 28px;transition:.25s;
}
.adv:hover{border-color:#c9dae8;box-shadow:0 14px 30px rgba(8,36,64,.09);transform:translateY(-4px)}
.adv .ico{
  width:52px;height:52px;border-radius:8px;background:#eef4fa;color:var(--blue);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.adv .ico svg{width:26px;height:26px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.adv h3{font-size:17px;font-weight:700;color:var(--navy);margin-bottom:9px}
.adv p{font-size:14px;color:var(--muted)}
.adv .n{font-size:12px;letter-spacing:1.6px;color:#b9c8d6;font-weight:700;float:right;margin-top:-4px}

/* ---------- factory gallery ---------- */
.gal{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.gal figure{position:relative;overflow:hidden;border-radius:7px;height:210px;cursor:pointer;margin:0}
.gal figure:nth-child(1),.gal figure:nth-child(6){grid-column:span 2}
/* 现场实拍图库固定 4×2，不用大图占位，8 张全部等大、不留半行空白 */
#sites .gal figure{grid-column:auto}
.gal img{width:100%;height:100%;object-fit:cover;transition:transform .55s}
.gal figure:hover img{transform:scale(1.08)}
.gal figcaption{
  position:absolute;inset:auto 0 0 0;padding:24px 16px 13px;color:#fff;font-size:13.5px;font-weight:600;
  background:linear-gradient(0deg,rgba(6,26,46,.88),transparent);letter-spacing:.3px;
}
.cap-list{display:grid;grid-template-columns:1fr 1fr;gap:12px 34px;margin-top:34px}
.cap-list li{display:flex;gap:11px;font-size:14px;color:#43525f}
.cap-list li::before{content:"";flex:0 0 7px;height:7px;background:var(--orange);border-radius:50%;margin-top:8px}

/* ---------- certificates ---------- */
.certs{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.cert{background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden;transition:.25s}
.cert:hover{box-shadow:0 14px 30px rgba(8,36,64,.12)}
.cert .cw{height:330px;background:#f7f9fb;display:flex;align-items:center;justify-content:center;padding:16px;border-bottom:1px solid var(--line)}
.cert .cw img{max-height:100%;width:auto;object-fit:contain;box-shadow:0 4px 14px rgba(8,36,64,.14)}
.cert .cb{padding:17px 20px 20px}
.cert .cb b{display:block;font-size:15px;color:var(--navy);font-weight:700;margin-bottom:4px}
.cert .cb span{font-size:13px;color:var(--muted)}
.cert .cb .no{font-size:12px;color:#93a5b6;margin-top:7px;letter-spacing:.3px}

/* ---------- applications ---------- */
.apps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.app{
  background:#fff;border:1px solid var(--line);border-left:3px solid var(--orange);
  border-radius:6px;padding:26px 24px;transition:.25s;
}
.app:hover{transform:translateY(-4px);box-shadow:0 12px 26px rgba(8,36,64,.09)}
.app h3{font-size:16.5px;font-weight:700;color:var(--navy);margin-bottom:8px}
.app p{font-size:13.8px;color:var(--muted)}

/* ---------- process ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:44px 0;counter-reset:s}
.step{position:relative;padding:0 22px;text-align:center}
.step::before{
  content:"";position:absolute;top:27px;left:50%;right:-50%;height:2px;background:var(--line);
}
.step:nth-child(3n)::before{display:none}
.step i{
  position:relative;z-index:2;width:56px;height:56px;margin:0 auto 16px;border-radius:50%;
  background:#fff;border:2px solid var(--line);color:var(--navy);font-style:normal;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;transition:.25s;
}
.step:hover i{background:var(--orange);border-color:var(--orange);color:#fff}
.step h3{font-size:15px;font-weight:700;color:var(--navy);margin-bottom:7px}
.step p{font-size:13px;color:var(--muted)}

/* ---------- faq ---------- */
.faq{max-width:900px;margin:0 auto}
.q{border:1px solid var(--line);border-radius:7px;margin-bottom:12px;background:#fff;overflow:hidden}
.q>button{
  width:100%;text-align:left;background:none;border:0;padding:19px 54px 19px 22px;cursor:pointer;
  font-size:15.5px;font-weight:600;color:var(--navy);position:relative;font-family:inherit;line-height:1.5;
}
.q>button::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--orange);transition:.25s;
}
.q.open>button::after{content:"\2212"}
.q .a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.q .a p{padding:0 22px 20px;font-size:14.5px;color:#4e5e6d;border-top:1px solid #f1f4f8;padding-top:16px}
.q.open{box-shadow:0 8px 20px rgba(8,36,64,.07)}

/* ---------- contact ---------- */
.contact{background:var(--navy-dark);color:#fff;position:relative;overflow:hidden}
.contact::after{
  content:"";position:absolute;right:-120px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,82,127,.55),transparent 68%);
}
.contact .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1.05fr;gap:56px}
.contact .tag{font-size:12px;letter-spacing:2.2px;text-transform:uppercase;color:#ffb37a;font-weight:700}
.contact h2{font-size:32px;font-weight:800;line-height:1.3;margin:12px 0 16px}
.contact .lead{color:#bccfde;font-size:15px;margin-bottom:32px}
.info{display:grid;gap:20px}
.info .row{display:flex;gap:15px;align-items:flex-start}
.info .ico{
  flex:0 0 42px;height:42px;border-radius:7px;background:rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:center;
}
.info .ico svg{width:20px;height:20px;stroke:#ffb37a;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.info .row b{display:block;font-size:13px;letter-spacing:1.2px;text-transform:uppercase;color:#8fa9bf;font-weight:600;margin-bottom:3px}
.info .row span{font-size:15px;color:#fff;line-height:1.5}
.info .row a:hover{color:#ffb37a}
/* ---- direct contact buttons ---- */
.qbtns{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:26px}
.qb{
  display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:7px;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.07);transition:.2s;
}
.qb:hover{background:rgba(255,255,255,.14);transform:translateY(-2px)}
.qb svg{width:24px;height:24px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
.qb b{display:block;font-size:14.5px;color:#fff;font-weight:700}
.qb em{display:block;font-style:normal;font-size:12px;color:#a8c1d6;line-height:1.4}
.qb-wa{background:#25d366;border-color:#25d366}
.qb-wa:hover{background:#1eb757;border-color:#1eb757}
.qb-wa em{color:#e6f8ec}
.qb-em em{color:#bcd2e5}

/* ---- mobile sticky contact bar ---- */
.mbar{display:none}
@media(max-width:900px){
  .mbar{
    display:grid;grid-template-columns:1fr 1fr 1.25fr;position:fixed;left:0;right:0;bottom:0;z-index:960;
    box-shadow:0 -4px 18px rgba(8,36,64,.18);
  }
  .mbar a{
    display:flex;align-items:center;justify-content:center;gap:7px;height:54px;
    font-size:14px;font-weight:700;color:#fff;
  }
  .mbar a svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
  .mbar .mb-wa{background:#25d366}
  .mbar .mb-em{background:var(--navy)}
  .mbar .mb-q{background:var(--orange)}
  /* 底部吸底条高度 + iPhone 底部安全区，页面内容才不会被挡 */
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom,0px))}
  .float{display:none}          /* the sticky bar below already carries WhatsApp / e-mail / quote */
  /* 吸底条本身要盖住 iPhone 底部横条区域；box-sizing 显式回到 content-box，
     否则全局的 border-box 会让安全区把 54px 的触控高度吃掉 */
  .mbar a{padding-bottom:env(safe-area-inset-bottom,0);box-sizing:content-box}
}

.form{background:#fff;border-radius:10px;padding:34px 32px;color:var(--text);box-shadow:0 24px 60px rgba(0,0,0,.28)}
.form h3{font-size:20px;font-weight:700;color:var(--navy);margin-bottom:6px}
.form .sub{font-size:13.5px;color:var(--muted);margin-bottom:22px}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form label{display:block;font-size:12.5px;font-weight:600;color:#40505f;margin-bottom:6px;letter-spacing:.3px}
.form input,.form select,.form textarea{
  width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:5px;font-size:14px;
  font-family:inherit;color:var(--text);background:#fbfcfd;transition:.2s;
}
.form input:focus,.form select:focus,.form textarea:focus{outline:0;border-color:var(--blue);background:#fff}
.form textarea{resize:vertical;min-height:96px}
.form .full{grid-column:span 2}
.form button{width:100%;margin-top:18px;height:52px;font-size:15.5px}
.form .note{font-size:12px;color:#93a5b6;margin-top:12px;text-align:center}
.form .ok{
  display:none;background:#eaf7ef;border:1px solid #bfe3cd;color:#1f7a46;border-radius:6px;
  padding:13px 16px;font-size:13.5px;margin-top:16px;
}
.form .ok.warn{background:#fff6e6;border-color:#f0d3a4;color:#8a5a12}
.form .ok.err{background:#fdeceb;border-color:#f2b8b2;color:#a8321f}
.form .btn[disabled]{opacity:.6;cursor:progress}

/* ---------- footer ---------- */
.footer{background:#061a2e;color:#8fa9bf;font-size:14px;padding:60px 0 0}
.fgrid4{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:44px}
.footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:20px;letter-spacing:.5px;position:relative;padding-bottom:12px}
.footer h4::after{content:"";position:absolute;left:0;bottom:0;width:34px;height:2px;background:var(--orange)}
.footer p{font-size:13.8px;line-height:1.8}
.footer li{margin-bottom:11px;font-size:13.8px}
.footer li a:hover{color:#ffb37a}
.footer .ficons{display:flex;gap:10px;margin-top:20px}
.footer .ficons a{
  width:36px;height:36px;border-radius:6px;background:rgba(255,255,255,.07);
  display:flex;align-items:center;justify-content:center;transition:.2s;
}
.footer .ficons a:hover{background:var(--orange)}
.footer .ficons svg{width:17px;height:17px;stroke:#fff;fill:none;stroke-width:1.8}
.fbot{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;font-size:13px}
.fbot .wrap{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

/* ---------- float ---------- */
.float{position:fixed;right:22px;bottom:26px;z-index:950;display:grid;gap:11px}
.float a,.float button{
  width:50px;height:50px;border-radius:50%;border:0;display:flex;align-items:center;justify-content:center;
  cursor:pointer;box-shadow:0 8px 22px rgba(8,36,64,.25);transition:.22s;
}
.float .wa{background:#25d366}
.float .em{background:var(--navy)}
.float .tp{background:var(--orange);opacity:0;visibility:hidden}
.float .tp.show{opacity:1;visibility:visible}
.float svg{width:23px;height:23px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.float a:hover,.float button:hover{transform:translateY(-3px)}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(26px);transition:opacity .7s,transform .7s}
.rv.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:1080px){
  .prods{grid-template-columns:repeat(3,1fr)}
  .gal{grid-template-columns:repeat(3,1fr)}
  .gal figure:nth-child(6){grid-column:auto}
  .steps{grid-template-columns:repeat(2,1fr);gap:34px 0}
  .step:nth-child(3n)::before{display:block}
  .step:nth-child(2n)::before{display:none}
  .about{grid-template-columns:1fr;gap:70px}
  .contact .wrap{grid-template-columns:1fr;gap:44px}
  .fgrid4{grid-template-columns:1fr 1fr;gap:34px}
}
@media(max-width:900px){
  /* 抽屉菜单：相对 sticky 的 .header 绝对定位，top:100% 就是页头下沿。
     不再写死 top:78px —— 窄屏页头是 70px，写死会错位，而且滚动后对不上。 */
  .nav{
    position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;
    padding:10px 0 18px;box-shadow:0 14px 30px rgba(8,36,64,.16);display:none;
    max-height:calc(100vh - var(--hdrH));max-height:calc(100dvh - var(--hdrH));overflow:auto;
    -webkit-overflow-scrolling:touch;
  }
  .nav.open{display:flex}
  :root{--hdrH:70px}
  .nav>li>a{line-height:50px;padding:0 26px}
  .nav>li>a::after{display:none}
  .drop{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border-top:0;padding-left:16px}
  .nav .cta{margin:12px 26px 0;text-align:center;justify-content:center}
  .burger{display:block}
  .header .wrap{height:var(--hdrH)}
  .hero{height:auto;padding:96px 0 84px}
  .hero .inner>.wrap{grid-template-columns:1fr;gap:38px}
  .hero h1{font-size:33px}
  .hero p{font-size:15.5px}
  .qcard{padding:22px 20px}
  .hero .btns .btn{flex:1 1 auto;justify-content:center}
  .cats,.advs,.certs,.apps{grid-template-columns:1fr 1fr}
  .gal{grid-template-columns:1fr 1fr}          /* 平板：4 列会把现场照片压成竖条 */
  .prods{grid-template-columns:1fr 1fr}
  .rfq{grid-template-columns:1fr 1fr}      /* 原来漏了，窄屏 4 列会横向溢出 */
  .footer{padding:48px 0 0}
  .cap-list{grid-template-columns:1fr}
  .stats .wrap{grid-template-columns:1fr 1fr}
  .stats div{border-bottom:1px solid rgba(255,255,255,.1)}
  .about .imgs .over{display:none}
  .about .imgs .main{height:320px}
  .topbar .tb-left{display:none}
  .topbar .wrap{justify-content:center}
}
@media(max-width:640px){
  .topbar{font-size:12px}
  .topbar .wrap{height:auto;min-height:38px;flex-wrap:wrap;justify-content:center;gap:6px 14px;padding:7px 0}
  .topbar .tb-right{gap:14px}
  .langs{gap:10px}
  section{padding:54px 0}
  .sec-head h2{font-size:25px}
  .cats,.advs,.certs,.apps,.prods,.gal,.rfq{grid-template-columns:1fr}
  .qbtns{grid-template-columns:1fr}
  .gal figure,.gal figure:nth-child(1),.gal figure:nth-child(6){grid-column:auto;height:200px}
  .steps{grid-template-columns:1fr;gap:26px 0}
  .step{padding:0 10px}
  .step::before{display:none}
  .fgrid4{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr}
  .form .full{grid-column:auto}
  .form{padding:26px 20px}
  .contact h2{font-size:25px}
  .hero h1{font-size:27px}
  .logo .txt strong{font-size:17px}
  .stats strong{font-size:25px}
  .about h2{font-size:24px}
  .float{right:14px;bottom:16px}
  /* 首屏：手机上顶部留白 96px 太浪费，第一屏要尽快露出产品与询价按钮 */
  .hero{padding:52px 0 56px}
  .hero .pills{gap:6px;margin:-4px 0 18px}
  .hero .pills b{font-size:11px;padding:4px 9px;letter-spacing:.2px}
  .hero .kicker{margin-bottom:14px}
  .hero .btns{gap:10px}
  .stats div{padding:20px 12px}
  .tabs{gap:8px;margin-bottom:28px}
  .tabs button{padding:10px 17px;font-size:13.5px;min-height:44px}
  .prod .gq{height:46px;font-size:14px}           /* 44px 以上才够手指点 */
  .prod .ph{height:190px}
  .tbl table{font-size:13px}
  .tbl th{padding:11px 12px;letter-spacing:.6px}
  .tbl td{padding:11px 12px}
  .tbl td:first-child{width:36%}
  .qcard{padding:20px 16px}
  .qcard .btn,.qcard .wln{height:50px;font-size:15px}
  /* iOS 上输入框字号小于 16px，聚焦时 Safari 会自动放大整个页面 */
  .form input,.form select,.form textarea{font-size:16px}
  .form button{height:54px}
  .gal figure,.gal figure:nth-child(1),.gal figure:nth-child(6){height:220px}
  .footer .fgrid4{gap:30px}
}


/* ================= multi-page additions ================= */

/* ---------- brand logo ---------- */
.logo img.mark{
  width:auto;height:46px;background:none!important;border-radius:0;
  object-fit:contain;display:block;
}
.footer .logo img.mark{height:42px;background:#fff!important;padding:6px 9px;border-radius:6px}

/* ---------- inner page banner ---------- */
.phero{
  position:relative;padding:68px 0 60px;color:#fff;background:var(--navy-dark) center/cover no-repeat;
  overflow:hidden;
}
.phero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(6,26,46,.95) 0%,rgba(6,26,46,.84) 52%,rgba(6,26,46,.62) 100%);
}
.phero .wrap{position:relative;z-index:2}
.phero .tag{
  display:inline-block;font-size:12px;letter-spacing:2.2px;text-transform:uppercase;
  color:#ffb37a;font-weight:700;margin-bottom:12px;
}
.phero h1{font-size:40px;font-weight:800;line-height:1.2;letter-spacing:-.5px;margin-bottom:14px;max-width:900px}
.phero p{font-size:16px;color:#c6d8e6;max-width:800px}
.phero .crumb{
  display:flex;gap:9px;align-items:center;flex-wrap:wrap;
  font-size:12.5px;color:#93aec6;letter-spacing:.5px;margin-bottom:16px;
}
.phero .crumb a{color:#93aec6}
.phero .crumb a:hover{color:#ffb37a}
.phero .crumb i{font-style:normal;opacity:.45}
.phero .crumb b{color:#ffb37a;font-weight:600}
/* 浅色版横幅（用在深色区块之前，形成对比） */
.phero.lite{background:var(--bg) center/cover no-repeat}
.phero.lite::after{display:none}
.phero.lite h1,.phero.lite .tag{color:var(--navy)}
.phero.lite .tag{color:var(--orange)}
.phero.lite p{color:var(--muted)}
.phero.lite .crumb,.phero.lite .crumb a{color:#8b9bab}
.phero.lite .crumb b{color:var(--orange)}

/* ---------- CTA band ---------- */
.ctaband{background:linear-gradient(100deg,var(--navy) 0%,var(--navy-light) 100%);color:#fff;padding:50px 0}
.ctaband .wrap{display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap}
.ctaband h2{font-size:26px;font-weight:800;margin-bottom:8px;line-height:1.3}
.ctaband p{color:#c3d6e5;font-size:14.5px;max-width:600px}
.ctaband .cb{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- outline button (on light background) ---------- */
.btn-outline{background:#fff;color:var(--navy);border:1.5px solid var(--navy)}
.btn-outline:hover{background:var(--navy);color:#fff;transform:translateY(-2px)}

/* ---------- home: featured products footer row ---------- */
.feat-more{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

@media(max-width:900px){
  .phero{padding:52px 0 46px}
  .phero h1{font-size:30px}
  .ctaband{padding:40px 0}
  .ctaband h2{font-size:21px}
}
@media(max-width:640px){
  .phero h1{font-size:25px}
  .phero p{font-size:14.5px}
  .logo img.mark{height:38px}
  .footer .logo img.mark{height:36px}
  .ctaband .cb .btn{flex:1 1 100%;justify-content:center}
}


/* ================= mobile polish (<420px) ================= */
@media(max-width:420px){
  .wrap{padding:0 15px}
  .hero{padding:44px 0 50px}
  .hero h1{font-size:24px}
  .hero p{font-size:15px;margin-bottom:24px}
  .qcard ul{gap:11px;margin-bottom:18px}
  .qcard li strong{font-size:13.5px}
  .logo .txt strong{font-size:16px}
  .logo .txt span{font-size:9.5px;letter-spacing:1.1px}
  .topbar{font-size:11.5px}
  .topbar .tb-right{gap:10px}
  .tbl td:first-child{width:40%}
  .prod .ph{height:170px}
  .stat, .stats div{padding:18px 10px}
  .phero{padding:44px 0 40px}
  .phero h1{font-size:22px}
}