/* ===========================================================
   锐亿奇工业科技 — 多品牌涂料独立站 · 主样式
   配色沿用品牌识别：#014694 深蓝 / #0b63c5 亮蓝 / #C41622 红
   版式：工业 B2B 卡片流
   =========================================================== */
:root{
  --blue:#014694;
  --blue-d:#032f5c;
  --blue-dd:#02203f;
  --blue-2:#0b63c5;
  --blue-soft:#eef4fb;
  --blue-line:#d8e4f4;
  --red:#C41622;
  --ink:#0f172a;
  --body:#475569;
  --gray:#8a94a6;
  --line:#e3eaf3;
  --bg:#f7f9fc;
  --white:#fff;
  --shadow:0 16px 40px -24px rgba(1,70,148,.42);
  --shadow-lg:0 30px 70px -34px rgba(1,70,148,.52);
  --maxw:1240px;
  --nav-h:78px;
  --r:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
html,body{max-width:100%;overflow-x:hidden}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans",sans-serif;
  color:var(--body);background:var(--bg);line-height:1.68;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
ul{list-style:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 26px}
.alt{background:var(--white)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 26px;border-radius:10px;
  font-size:14.5px;font-weight:800;letter-spacing:.01em;white-space:nowrap;transition:.2s;border:1px solid transparent}
.btn svg{width:17px;height:17px;flex:0 0 auto}
.btn-blue{background:var(--blue-2);color:#fff;box-shadow:0 12px 26px -14px rgba(11,99,197,.85)}
.btn-blue:hover{background:var(--blue);transform:translateY(-1px)}
.btn-red{background:var(--red);color:#fff;box-shadow:0 12px 26px -14px rgba(196,22,34,.8)}
.btn-red:hover{background:#a0111c;transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.55);backdrop-filter:blur(3px)}
.btn-ghost:hover{background:rgba(255,255,255,.2)}
.btn-line{background:#fff;color:var(--blue);border-color:var(--blue-line)}
.btn-line:hover{border-color:var(--blue-2);color:var(--blue-2)}

/* ---------- 顶部导航 ---------- */
.site-nav{position:sticky;top:0;z-index:90;background:rgba(255,255,255,.97);
  backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1440px;margin:0 auto;padding:0 26px;display:flex;align-items:center;height:var(--nav-h);gap:16px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand img{height:34px;width:auto}
.brand .bt{display:flex;flex-direction:column;line-height:1.16;border-left:1px solid var(--line);padding-left:12px}
.brand .bt b{font-size:15px;font-weight:900;color:var(--blue);letter-spacing:.01em}
.brand .bt span{font-size:10.5px;color:var(--gray);letter-spacing:.04em;font-weight:700}
.menu{display:flex;align-items:center;margin-left:auto}
.menu>li{position:relative}
.menu>li>a{display:flex;align-items:center;gap:5px;padding:0 13px;height:var(--nav-h);
  font-size:14.5px;font-weight:700;color:var(--blue);white-space:nowrap;transition:.2s}
.menu>li>a:hover{color:var(--blue-2)}
.menu>li.active>a{color:var(--blue-2);box-shadow:inset 0 -3px 0 var(--blue-2)}

/* ---------- 语言切换器 ---------- */
.lang{position:relative;display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;
  padding:4px 8px 4px 9px;border:1px solid var(--line);border-radius:10px;background:#f8fafc;transition:.18s}
.lang:hover{border-color:#c7d2e0;background:#fff}
.lang-globe{width:15px;height:15px;flex:0 0 auto;color:#94a3b8;transition:.18s}
.lang:hover .lang-globe{color:var(--blue-2)}
.lang-pills{display:none}
.lang-pill{display:inline-flex;align-items:center;justify-content:center;min-width:30px;height:24px;
  padding:0 6px;border-radius:6px;font-size:11.5px;font-weight:800;letter-spacing:.3px;line-height:1;
  color:#64748b;white-space:nowrap;transition:.15s}
.lang-pill:hover{color:var(--blue-2);background:#e8eef6}
.lang-pill.on{color:#fff;background:var(--blue-2);box-shadow:0 1px 3px rgba(15,45,90,.22)}
.lang-pill.on:hover{color:#fff;background:var(--blue-2)}
/* 全站语言下拉（替换原按钮组） */
.lang-sel{display:block;appearance:none;-webkit-appearance:none;border:0;color:var(--blue);
  font-weight:800;font-size:13px;font-family:inherit;cursor:pointer;white-space:nowrap;
  padding:3px 19px 3px 0;max-width:150px;text-overflow:ellipsis;
  background:transparent url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%2364748b' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right center;
  background-size:10px 6px}
.lang-sel:hover{color:var(--blue-2)}
.lang-sel:focus-visible{outline:2px solid var(--blue-2);outline-offset:2px;border-radius:6px}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.hamburger span{width:23px;height:2px;background:var(--blue);border-radius:2px}

/* ---------- 首屏 ---------- */
.hero{position:relative;height:clamp(430px,58vh,560px);overflow:hidden;background:var(--blue-dd)}
.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity 1s ease}
.hero-slide.on{opacity:1}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.hero-slide::after{content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(2,32,63,.92) 0%,rgba(2,32,63,.76) 46%,rgba(2,32,63,.30) 100%)}
.hero-inner{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;padding:0 26px;
  height:100%;display:flex;flex-direction:column;justify-content:center;max-width:var(--maxw)}
.hero-copy{max-width:660px;color:#fff}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:800;
  letter-spacing:.16em;text-transform:uppercase;color:#8fc0ff;margin-bottom:16px}
.hero-eyebrow::before{content:"";width:26px;height:2px;background:#8fc0ff}
.hero h1,.hero .hero-title{font-size:clamp(26px,3.5vw,42px);line-height:1.22;font-weight:900;letter-spacing:-.01em;margin-bottom:16px}
.hero h1 em,.hero .hero-title em{font-style:normal;color:#7fb6ff}
.hero p{font-size:15.5px;line-height:1.72;color:#d3e2f5;margin-bottom:26px;max-width:600px}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px}
.hero-dots{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);z-index:3;display:flex;gap:8px}
.hero-dots button{width:9px;height:9px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(255,255,255,.42);transition:.2s;padding:0}
.hero-dots button.on{background:#fff;width:24px;border-radius:5px}

/* ---------- 数据带 ---------- */
.stats{background:var(--blue);color:#fff}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding-top:26px;padding-bottom:26px}
.stat{text-align:center;padding:6px 10px;border-right:1px solid rgba(255,255,255,.14)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:clamp(22px,2.6vw,31px);font-weight:900;letter-spacing:-.02em;color:#fff}
.stat span{display:block;font-size:12.5px;color:#b9d2f0;margin-top:3px;font-weight:600}

/* ---------- 通用区块标题 ---------- */
.sec{padding:66px 0}
.sec-head{max-width:760px;margin-bottom:34px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{display:inline-block;font-size:11.5px;font-weight:900;letter-spacing:.16em;
  text-transform:uppercase;color:var(--blue-2);margin-bottom:10px}
.sec-head h2{font-size:clamp(22px,2.6vw,31px);font-weight:900;color:var(--ink);line-height:1.28;letter-spacing:-.01em}
.sec-head p{margin-top:12px;font-size:15px;color:var(--body)}
.sec-head .lead-line{width:52px;height:3px;background:var(--red);border-radius:3px;margin:14px 0 0}
.sec-head.center .lead-line{margin-left:auto;margin-right:auto}

/* ---------- 品牌墙 ---------- */
.bgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.bcard{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 20px;
  display:flex;flex-direction:column;gap:14px;transition:.22s;position:relative;overflow:hidden}
.bcard::after{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:var(--blue-2);transition:.28s}
.bcard:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--blue-line)}
.bcard:hover::after{width:100%}
.blogo{height:68px;display:flex;align-items:center;justify-content:center}
/* 九个品牌 logo 的宽高比差异很大（1.29 ~ 3.90）。只限高度时，最宽的 HEMPEL
   会被拉到 226px、最窄的 PPG 只有 75px，并排时视觉重量差 3 倍。这里同时约束
   高度与宽度，把每个 logo 收进统一的「视觉盒」内居中，整面品牌墙才齐整。 */
.blogo img{max-height:46px;max-width:158px;width:auto;object-fit:contain}
/* AkzoNobel / NIPPON / PPG 的 logo 宽高比只有 1.29~1.65（其余品牌 2.6~4.1）。
   同样限高时它们横向只占 ~60-90px，和 158px 宽的横向 logo 并排会显得又小又轻，
   这里按品牌放宽高度上限做视觉补偿。 */
.blogo img[data-b="akzonobel"],.blogo img[data-b="nippon"],.blogo img[data-b="ppg"]{max-height:64px}
.bcard .bmeta{border-top:1px solid var(--line);padding-top:13px;display:flex;align-items:flex-end;justify-content:space-between;gap:8px}
.bcard .bmeta b{font-size:16px;font-weight:900;color:var(--ink);display:block;line-height:1.3}
.bcard .bmeta em{font-style:normal;font-size:11.5px;color:var(--gray);letter-spacing:.05em;font-weight:700}
.bcard .bnum{font-size:12.5px;color:var(--blue-2);font-weight:800;white-space:nowrap}
.bcard .bnum i{font-style:normal;font-size:17px;font-weight:900;color:var(--blue)}
.bcard .go{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:800;color:var(--blue-2)}
.bcard .go svg{width:13px;height:13px;transition:.2s}
.bcard:hover .go svg{transform:translateX(3px)}

/* ---------- 优势 ---------- */
.fgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.fitem{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;transition:.22s}
.fitem:hover{box-shadow:var(--shadow);border-color:var(--blue-line)}
.fico{width:46px;height:46px;border-radius:11px;background:var(--blue-soft);display:flex;
  align-items:center;justify-content:center;margin-bottom:16px}
.fico svg{width:23px;height:23px;fill:var(--blue-2)}
.fitem h3{font-size:16.5px;font-weight:900;color:var(--ink);margin-bottom:9px}
.fitem p{font-size:14px;line-height:1.72}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(100deg,var(--blue-dd),var(--blue) 62%,var(--blue-2));color:#fff}
.cta-inner{max-width:var(--maxw);margin:0 auto;padding:46px 26px;display:flex;align-items:center;
  justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(19px,2.2vw,25px);font-weight:900;line-height:1.34}
.cta-inner h2 em{font-style:normal;color:#7fb6ff}
.cta-inner p{margin-top:8px;font-size:14.5px;color:#c8dcf5;max-width:640px}

/* ---------- 页脚 ---------- */
footer{background:var(--blue-dd);color:#a9bed8;font-size:13.5px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1.2fr 1fr 1fr;gap:34px;padding:52px 0 34px}
.foot-brand{margin-bottom:14px}
.foot-brand img{height:32px;width:auto}
.foot-h{color:#fff;font-size:13.5px;font-weight:900;letter-spacing:.03em;margin-bottom:14px;
  text-transform:uppercase}
.foot-col p{margin-bottom:8px;line-height:1.66}
.foot-col>a{display:block;margin-bottom:8px;transition:.15s}
.foot-col p a{display:inline;margin-bottom:0}
.foot-col .fc-name{color:#fff;font-weight:800}
.foot-col .fc-sep{margin-top:14px}
.foot-col .fc-addr{margin-top:10px;padding-top:10px;border-top:1px solid rgba(255,255,255,.13)}
.foot-col a:hover{color:#fff}
footer a:hover{color:#fff}
.foot-disc{border-top:1px solid rgba(255,255,255,.13);padding:20px 0;font-size:12px;line-height:1.78;color:#8ba3c0}
.foot-bottom{border-top:1px solid rgba(255,255,255,.13);padding:18px 0 26px;display:flex;
  justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:#8ba3c0}

/* ---------- 内页头部 ---------- */
.phead{background:linear-gradient(120deg,var(--blue-dd),var(--blue) 70%);color:#fff;position:relative;overflow:hidden}
.phead::after{content:"";position:absolute;right:-60px;top:-60px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(11,99,197,.42),transparent 66%)}
.phead .wrap{padding-top:44px;padding-bottom:44px;position:relative;z-index:2}
.crumb{font-size:12.5px;color:#9dbbe0;margin-bottom:12px;font-weight:600}
.crumb a:hover{color:#fff}
.crumb i{font-style:normal;margin:0 7px;opacity:.6}
.phead h1{font-size:clamp(23px,2.9vw,34px);font-weight:900;letter-spacing:-.01em;line-height:1.25}
.phead p{margin-top:12px;font-size:15px;color:#c8dcf5;max-width:820px;line-height:1.72}

/* ---------- 品牌页：筛选 + 分组 ---------- */
.bhead{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;
  display:flex;align-items:center;gap:22px;flex-wrap:wrap;box-shadow:var(--shadow);margin-top:-40px;
  position:relative;z-index:3}
.bhead .blogo{height:64px;width:150px;flex:0 0 auto}
.bhead .binfo{flex:1 1 260px}
.bhead .binfo b{display:block;font-size:20px;font-weight:900;color:var(--ink)}
.bhead .binfo span{font-size:13.5px;color:var(--gray)}
.bhead .bstat{font-size:13px;color:var(--blue-2);font-weight:800}
.bhead .bstat i{font-style:normal;font-size:24px;font-weight:900;color:var(--blue)}
.bfilter{display:flex;align-items:center;gap:9px;background:var(--bg);border:1px solid var(--line);
  border-radius:10px;padding:10px 14px;flex:1 1 260px;max-width:340px}
.bfilter svg{width:16px;height:16px;fill:var(--gray);flex:0 0 auto}
.bfilter input{flex:1;border:0;background:transparent;font-size:14px;font-family:inherit;color:var(--ink);outline:none}
.mgroup{margin-top:34px}
.mgroup>h2{display:flex;align-items:center;gap:11px;font-size:16.5px;font-weight:900;color:var(--ink);
  padding-bottom:11px;border-bottom:2px solid var(--line);margin-bottom:16px}
.mgroup>h2 em{font-style:normal;font-size:12px;font-weight:800;color:var(--blue-2);
  background:var(--blue-soft);padding:2px 9px;border-radius:20px}
.mgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(212px,1fr));gap:9px}
.mchip{background:#fff;border:1px solid var(--line);border-radius:9px;padding:10px 13px;transition:.16s;
  display:flex;flex-direction:column;gap:2px;min-height:52px;justify-content:center}
.mchip:hover{border-color:var(--blue-2);box-shadow:0 8px 20px -14px rgba(1,70,148,.6);transform:translateY(-1px)}
.mchip b{font-size:13.5px;font-weight:800;color:var(--ink);line-height:1.32;word-break:break-word}
.mchip span{font-size:11.5px;color:var(--gray);line-height:1.4}
.mempty{text-align:center;padding:60px 20px;color:var(--gray);display:none}
.mempty.show{display:block}

/* ---------- 关于 / 联系 / 隐私 ---------- */
.prose{max-width:900px}
.prose h2{font-size:20px;font-weight:900;color:var(--ink);margin:32px 0 12px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:16px;font-weight:800;color:var(--ink);margin:22px 0 8px}
.prose p{margin-bottom:13px;font-size:14.8px;line-height:1.82}
.prose ul{margin:0 0 14px 0}
.prose li{position:relative;padding-left:20px;margin-bottom:9px;font-size:14.6px;line-height:1.76}
.prose li::before{content:"";position:absolute;left:2px;top:10px;width:7px;height:7px;border-radius:2px;background:var(--blue-2)}
.prose .hl{background:var(--blue-soft);border-left:3px solid var(--blue-2);padding:15px 18px;border-radius:0 9px 9px 0;margin:18px 0}
.prose .hl p{margin:0;font-size:14.2px}

.ccard{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px;
  box-shadow:var(--shadow);max-width:720px}
.ccard .cname{font-size:22px;font-weight:900;color:var(--ink)}
.ccard .crole{font-size:13.5px;color:var(--blue-2);font-weight:800;margin-bottom:22px}
.crow{display:grid;grid-template-columns:40px 104px 1fr;align-items:center;column-gap:14px;
  padding:15px 0;border-top:1px solid var(--line)}
.crow:first-of-type{border-top:0}
.cicon{width:40px;height:40px;border-radius:10px;background:var(--blue-soft);display:flex;
  align-items:center;justify-content:center;flex:0 0 auto}
.cicon svg{width:19px;height:19px;fill:var(--blue-2)}
.crow .clab{font-size:11.5px;color:var(--gray);font-weight:800;letter-spacing:.06em;text-transform:uppercase;
  white-space:nowrap}
.crow .cval{font-size:15.5px;color:var(--ink);font-weight:700;min-width:0;
  overflow-wrap:anywhere;line-height:1.45}
.crow .cval a:hover{color:var(--blue-2)}
@media (max-width:600px){
  .ccard{padding:22px 18px}
  .crow{grid-template-columns:34px 1fr;row-gap:3px;column-gap:12px;align-items:start;padding:13px 0}
  .crow .cicon{grid-row:span 2;width:34px;height:34px}
  .crow .clab,.crow .cval{grid-column:2}
  .crow .cval{font-size:15px}
}

/* ---------- 资讯中心 ---------- */
.ngrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.ncard{display:flex;flex-direction:column;gap:10px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r);padding:22px 22px 20px;transition:.2s;box-shadow:0 6px 20px -18px rgba(1,70,148,.5)}
.ncard:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--blue-line)}
.nmeta{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.ncat{font-size:11px;font-weight:900;letter-spacing:.06em;text-transform:uppercase;color:var(--blue-2);
  background:var(--blue-soft);padding:4px 9px;border-radius:6px}
.nmeta time{font-size:12px;color:var(--gray);font-weight:700}
.ncard h2{font-size:16.5px;font-weight:800;color:var(--ink);line-height:1.42}
.ncard p{font-size:13.5px;color:var(--body);line-height:1.62;flex:1 1 auto}
.nmore{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:800;color:var(--blue-2);
  margin-top:2px}
.nmore svg{width:13px;height:13px;transition:.2s}
.ncard:hover .nmore svg,.scard:hover .nmore svg{transform:translateX(3px)}
.ncat.solo{display:inline-block;margin:0 0 10px}
.phead .ncat.solo{background:rgba(255,255,255,.16);color:#cfe0f5}
.phead .ndate{font-size:12.5px;color:#a8c3e2;font-weight:700;margin-top:10px}
.pager{display:flex;justify-content:center;gap:8px;margin-top:34px}
.pnum{display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:38px;
  border:1px solid var(--line);border-radius:9px;font-size:14px;font-weight:800;color:var(--blue);
  background:#fff;transition:.18s}
.pnum:hover{border-color:var(--blue-2);color:var(--blue-2)}
.pnum.on{background:var(--blue-2);border-color:var(--blue-2);color:#fff}
.moreline{display:flex;justify-content:center;margin-top:32px}
.artwrap{max-width:840px}
.prose.art{font-size:15.6px}
.prose.art .lead{font-size:17px;color:var(--ink);font-weight:600;border-left:3px solid var(--blue-2);
  padding-left:16px;margin-bottom:26px;line-height:1.6}
.prose.art h2{font-size:19px;font-weight:900;color:var(--ink);margin:30px 0 10px}
.prose.art p{margin-bottom:14px}
.relbox,.srcbox{margin-top:30px;padding:20px 22px;border:1px solid var(--line);border-radius:var(--r);background:#fff}
.srcbox{background:var(--blue-soft);border-color:var(--blue-line)}
.relbox .foot-h,.srcbox .foot-h{margin-bottom:8px}
.relbox a{display:block;padding:9px 0;border-top:1px dashed var(--line);font-size:14px;font-weight:700;color:var(--blue)}
.relbox a:first-of-type{border-top:0}
.relbox a:hover{color:var(--blue-2)}

/* ---------- 应用场景 ---------- */
.sgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.scard{display:flex;flex-direction:column;gap:10px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r);padding:22px;transition:.2s;box-shadow:0 6px 20px -18px rgba(1,70,148,.5)}
.scard:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--blue-line)}
.slogo{display:flex;gap:10px;align-items:center;height:32px}
.slogo img{max-height:22px;max-width:64px;width:auto;object-fit:contain}
.slogo img[data-b="akzonobel"],.slogo img[data-b="nippon"],.slogo img[data-b="ppg"]{max-height:29px}
.scard h2{font-size:16.5px;font-weight:800;color:var(--ink);line-height:1.4}
.scard p{font-size:13.5px;color:var(--body);line-height:1.6;flex:1 1 auto}
.srow{display:flex;align-items:center;gap:8px;font-size:12.5px;flex-wrap:wrap}
.srow em{font-style:normal;color:var(--gray);font-weight:800;text-transform:uppercase;letter-spacing:.05em}
.srow b{color:var(--ink);font-weight:800}
.duo{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:28px}
.duo-card{background:var(--blue-soft);border:1px solid var(--blue-line);border-radius:12px;padding:16px 18px}
.duo-card em{display:block;font-style:normal;font-size:11.5px;font-weight:900;letter-spacing:.06em;
  text-transform:uppercase;color:var(--blue-2);margin-bottom:5px}
.duo-card b{font-size:16px;font-weight:900;color:var(--ink)}
h2.sect{font-size:19px;font-weight:900;color:var(--ink);margin:34px 0 14px;padding-left:13px;position:relative}
h2.sect::before{content:"";position:absolute;left:0;top:3px;bottom:3px;width:4px;border-radius:3px;background:var(--red)}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:#fff}
.stable{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}
.stable th{background:var(--blue-soft);color:var(--blue);font-size:11.5px;font-weight:900;
  letter-spacing:.06em;text-transform:uppercase;text-align:left;padding:12px 16px;white-space:nowrap}
.stable td{padding:13px 16px;border-top:1px solid var(--line);color:var(--body);vertical-align:top}
.stable td b{color:var(--ink);font-weight:800}
ul.blist{list-style:none;margin:0}
ul.blist li{position:relative;padding-left:20px;margin-bottom:10px;font-size:14.6px;color:var(--body);line-height:1.66}
ul.blist li::before{content:"";position:absolute;left:2px;top:9px;width:7px;height:7px;border-radius:2px;background:var(--blue-2)}
.srcbox ul.blist li{font-size:13px}
.bchips{display:flex;flex-wrap:wrap;gap:10px}
.bchip{display:inline-flex;align-items:center;padding:9px 16px;border:1px solid var(--blue-line);
  border-radius:9px;background:#fff;font-size:13.5px;font-weight:800;color:var(--blue);transition:.18s}
.bchip:hover{border-color:var(--blue-2);color:var(--blue-2);background:var(--blue-soft)}

/* ---------- 404 ---------- */
.err{min-height:56vh;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:70px 20px}
.err b{font-size:min(24vw,110px);font-weight:900;line-height:1;color:var(--blue-soft);
  letter-spacing:-.04em;display:block}
.err .err-t{font-size:24px;font-weight:900;color:var(--ink);margin:8px 0 10px}
.err p{max-width:520px;margin-bottom:26px}
.err .quick{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .menu>li>a{padding:0 9px}
  .bgrid,.fgrid,.ngrid,.sgrid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:960px){
  :root{--nav-h:66px}
  .nav-inner{padding:0 18px;gap:10px}
  .brand img{height:29px}
  .brand .bt{display:none}
  .lang{padding:2px 6px 2px 7px;gap:5px;margin-left:auto}
  .lang-globe{width:13px;height:13px}
  .lang-pills{display:none}
  .lang-sel{display:block;font-size:12px;padding-right:17px;max-width:118px}
  .menu{display:none}
  .hamburger{display:flex}
  .site-nav.open .menu{display:flex;flex-direction:column;position:absolute;left:0;right:0;top:var(--nav-h);
    background:#fff;border-bottom:1px solid var(--line);padding:8px 0;box-shadow:var(--shadow);margin-left:0}
  .site-nav.open .menu>li{width:100%}
  .site-nav.open .menu>li>a{height:auto;padding:13px 20px;line-height:1.4}
  .site-nav.open .menu>li.active>a{box-shadow:inset 3px 0 0 var(--blue-2)}
  .stats .wrap{grid-template-columns:1fr 1fr;gap:0}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid rgba(255,255,255,.14)}
  .stat{padding:14px 8px}
  .sec{padding:46px 0}
  .bhead{margin-top:-26px;padding:18px;gap:14px}
  .bfilter{max-width:none}
  .cta-inner{padding:36px 20px}
}
@media (max-width:760px){
  .wrap{padding:0 18px}
  /* 单列后卡片变宽，按比例放大 logo，避免右侧留白过多 */
  .blogo{height:74px}
  .blogo img{max-height:52px;max-width:186px}
  .blogo img[data-b="akzonobel"],.blogo img[data-b="nippon"],.blogo img[data-b="ppg"]{max-height:70px}
  .bgrid,.fgrid,.ngrid,.sgrid{grid-template-columns:1fr}
  .duo{grid-template-columns:1fr}
  .mgrid{grid-template-columns:1fr 1fr}
  .hero{height:auto;min-height:430px}
  .hero-inner{padding-top:56px;padding-bottom:56px}
  .foot-grid{grid-template-columns:1fr;gap:24px}
  .bhead .blogo{width:120px;height:54px}
}
@media (max-width:460px){
  .mgrid{grid-template-columns:1fr}
  .stats .wrap{grid-template-columns:1fr 1fr}
}


/* ---------- 型号芯片改为链接（可点进详情页） ---------- */
a.mchip{text-decoration:none;color:inherit}
.mchip .mgo{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:800;
  color:var(--blue-2);margin-top:3px}
.mchip .mgo svg{width:11px;height:11px}

/* ---------- 筛选计数 / 空状态 ---------- */
.mbar{display:flex;align-items:center;gap:10px;margin:18px 0 0;flex-wrap:wrap}
.mcount{font-size:12.5px;color:var(--gray);font-weight:700}
.mcount b{color:var(--blue-2);font-size:14px}

/* ---------- 功能分类入口 ---------- */
.ggrid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.gcard{display:flex;flex-direction:column;gap:7px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r);padding:18px;transition:.2s;text-decoration:none;
  box-shadow:0 6px 20px -18px rgba(1,70,148,.5)}
.gcard:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--blue-line)}
.gcard b{font-size:15px;font-weight:900;color:var(--ink);line-height:1.35}
.gcard em{font-style:normal;font-size:12px;font-weight:800;color:var(--blue-2)}
.gcard span{font-size:13px;color:var(--body);line-height:1.55;flex:1 1 auto}
.gcard .mgo{display:inline-flex;align-items:center;gap:5px;font-size:12.5px;font-weight:800;color:var(--blue-2)}
.gcard .mgo svg{width:12px;height:12px;transition:.2s}
.gcard:hover .mgo svg{transform:translateX(3px)}

/* ---------- 型号详情页 ---------- */
.mhead{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;
  box-shadow:var(--shadow);margin-top:-40px;position:relative;z-index:3}
.mhead .mrow{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.mhead .blogo{height:58px;width:140px;flex:0 0 auto}
.mhead .mtag{display:flex;flex-direction:column;gap:3px;flex:1 1 240px}
.mhead .mtag b{font-size:22px;font-weight:900;color:var(--ink);line-height:1.25;word-break:break-word}
.mhead .mtag span{font-size:13.5px;color:var(--gray);font-weight:700}
.mhead .mbtns{display:flex;gap:10px;flex-wrap:wrap}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;margin:26px 0 0}
.kv div{background:var(--blue-soft);border:1px solid var(--blue-line);border-radius:11px;padding:13px 16px}
.kv em{display:block;font-style:normal;font-size:11px;font-weight:900;letter-spacing:.06em;
  text-transform:uppercase;color:var(--blue-2);margin-bottom:4px}
.kv b{font-size:14.5px;font-weight:800;color:var(--ink);word-break:break-word}
.chiprow{display:flex;flex-wrap:wrap;gap:9px}
.chiprow a{display:inline-flex;align-items:center;padding:8px 14px;border:1px solid var(--line);
  border-radius:8px;background:#fff;font-size:13px;font-weight:700;color:var(--blue);transition:.16s}
.chiprow a:hover{border-color:var(--blue-2);background:var(--blue-soft);color:var(--blue-2)}

/* ---------- 站内搜索 ---------- */
.searchbox{display:flex;align-items:center;gap:11px;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:15px 18px;box-shadow:var(--shadow);max-width:680px}
.searchbox svg{width:19px;height:19px;fill:var(--gray);flex:0 0 auto}
.searchbox input{flex:1;border:0;background:transparent;font-size:16px;font-family:inherit;color:var(--ink);outline:none}
.sres{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:22px}
.sres a{display:flex;flex-direction:column;gap:3px;padding:13px 16px;border:1px solid var(--line);
  border-radius:10px;background:#fff;transition:.16s}
.sres a:hover{border-color:var(--blue-2);box-shadow:0 8px 20px -16px rgba(1,70,148,.6)}
.sres a b{font-size:14px;font-weight:800;color:var(--ink)}
.sres a span{font-size:11.5px;color:var(--gray);font-weight:700}

@media (max-width:1080px){
  .ggrid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:760px){
  .ggrid{grid-template-columns:repeat(2,1fr)}
  .sres{grid-template-columns:1fr}
  .mhead{margin-top:-26px;padding:18px}
}
@media (max-width:460px){
  .ggrid{grid-template-columns:1fr}
}

/* ---------- 分组标题里的品牌/功能链接 ---------- */
.mgroup>h2 a{color:inherit;text-decoration:none}
.mgroup>h2 a:hover{color:var(--blue-2)}

/* ---------- 键盘可达性：跳到主内容（第 7 轮） ---------- */
.skip{position:absolute;left:-9999px;top:0;z-index:120;background:var(--blue);color:#fff;
  padding:11px 18px;border-radius:0 0 12px 0;font-weight:800;font-size:14.5px;
  text-decoration:none;box-shadow:var(--shadow)}
.skip:focus,.skip:focus-visible{left:0;outline:3px solid var(--blue-2);outline-offset:2px}
main{display:block}
#main{scroll-margin-top:calc(var(--nav-h) + 10px)}

/* ---------- 站点地图页（第 7 轮） ---------- */
.smblock{margin-top:8px}
.smblock .mgroup>h2{font-size:16.5px}

/* ---------- 联系页：双联系人卡片（2026-10-12 新增第二位销售联系人） ---------- */
.cgrid{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:start}
.cgrid .ccard{max-width:none}
.ccompany{max-width:none;margin-top:22px}
@media (max-width:860px){
  .cgrid{grid-template-columns:1fr}
}