/* LANEZO — header stylesheet, single source for every page.
   Loaded before site.css (interior pages) and before the homepage inline
   style block. Nothing about the header may be redefined anywhere else:
   the 2026-11 rule is that the bar, the menu and the language switch are
   styled here and only here, because a second copy is what produced the
   "duplicate divider lines" regression on the About page.

   Order: utility bar → white bar → mega menu → mobile menu. */

/* ---------- utility bar: contacts left, notice centre, language right ---- */
.ubar{background:var(--ink);color:rgba(255,255,255,.78);font-size:11.5px;
  letter-spacing:.01em;line-height:1}
.ubar .wrap{position:relative;display:flex;align-items:center;
  justify-content:space-between;gap:20px;height:36px}
.ub-l{display:flex;align-items:center;gap:14px;min-width:0}
.ub-r{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.ub-s{display:inline-flex;align-items:center;justify-content:center;
  width:20px;height:20px;color:rgba(255,255,255,.62);transition:color .18s}
.ub-s:hover{color:#fff}
.ub-s svg{width:14px;height:14px;display:block}
.ub-d{width:1px;height:12px;background:rgba(255,255,255,.22)}
.ub-c{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.78);
  white-space:nowrap;transition:color .18s}
.ub-c:hover{color:#fff}
.ub-c svg{width:13px;height:13px;flex:0 0 auto;opacity:.7}
.ub-c em{font-style:normal;font-size:10px;letter-spacing:.08em;text-transform:uppercase;
  color:rgba(255,255,255,.42);margin-right:5px}
.ub-c em{font-style:normal;font-size:10px;letter-spacing:.08em;text-transform:uppercase;
  color:rgba(255,255,255,.42);margin-right:5px}
.ub-m{flex:1 1 auto;min-width:0;padding:0 22px;text-align:center;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  color:rgba(255,255,255,.58);font-size:11px}
.lang{display:inline-flex;align-items:center;gap:6px;font-size:11.5px;
  color:rgba(255,255,255,.82);border:1px solid rgba(255,255,255,.26);
  padding:4px 9px;letter-spacing:.02em;transition:border-color .18s,color .18s}
.lang:hover{border-color:#fff;color:#fff}
.lang svg{width:12px;height:12px;opacity:.75}

/* ---------- white bar ---------------------------------------------------- */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line)}
header .wrap{position:relative;display:flex;align-items:center;
  justify-content:space-between;gap:28px;height:68px}
/* 官方字标是图片，不是手打的文字。浅底头部用深色版，深底页脚用反白版。 */
.logo{display:inline-flex;align-items:center;flex:0 0 auto;white-space:nowrap}
.logo img{display:block;height:26px;width:auto}
.flogo img{display:block;height:30px;width:auto}
nav.main{display:flex;gap:2px;font-size:14px;font-weight:500;height:100%;
  align-items:stretch}
.ni{position:static;display:flex;align-items:center}
.ni>a{display:inline-flex;align-items:center;gap:5px;height:100%;padding:0 13px;
  color:var(--ink);position:relative;white-space:nowrap}
.ni>a::after{content:"";position:absolute;left:13px;right:13px;bottom:0;height:2px;
  background:var(--blue);transform:scaleX(0);transform-origin:left;
  transition:transform .3s cubic-bezier(.2,.7,.2,1)}
.ni:hover>a::after,.ni:focus-within>a::after{transform:scaleX(1)}
.ni>a:hover{color:var(--blue)}
.ni>a .cv{font-size:10px;color:#9aa2ab;line-height:1;
  transition:transform .25s,color .2s}
.ni:hover>a .cv{transform:rotate(180deg);color:var(--blue)}
.hact{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.hact .btn{white-space:nowrap}

/* ---------- mega menu ----------------------------------------------------
   Every subcategory is listed, so a column can carry thirteen links. The
   panel therefore scrolls inside the viewport instead of being cut by it:
   overflow is on .mega, never on header, or the sticky bar clips the panel. */
.mega{position:absolute;top:100%;left:0;right:0;width:auto;background:#fff;
  border:1px solid var(--line);border-top:2px solid var(--blue);
  box-shadow:0 40px 80px -40px rgba(9,11,14,.5);
  padding:26px 28px 24px;max-height:calc(100vh - 74px);overflow-y:auto;
  overscroll-behavior:contain;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s ease,transform .32s cubic-bezier(.2,.7,.2,1),visibility .2s}
.ni:hover>.mega,.ni:focus-within>.mega{opacity:1;visibility:visible;transform:none}
.mega-in{display:grid;grid-template-columns:repeat(4,minmax(0,1fr)) 268px;
  gap:26px;align-items:stretch}
.mega-in>*{opacity:0;transform:translateY(8px);
  transition:opacity .34s ease,transform .34s cubic-bezier(.2,.7,.2,1)}
.ni:hover .mega-in>*,.ni:focus-within .mega-in>*{opacity:1;transform:none}
.mega-in>*:nth-child(1){transition-delay:.03s}
.mega-in>*:nth-child(2){transition-delay:.07s}
.mega-in>*:nth-child(3){transition-delay:.11s}
.mega-in>*:nth-child(4){transition-delay:.15s}
.mega-in>*:nth-child(5){transition-delay:.19s}

/* no vertical rules between columns: spacing does the dividing */
.mcol{min-width:0}
.mcol .mk{font-family:Consolas,ui-monospace,monospace;font-size:10px;
  letter-spacing:.18em;text-transform:uppercase;color:var(--blue);margin-bottom:9px}
.mcol .mt{display:flex;align-items:flex-start;justify-content:space-between;gap:8px;
  min-height:2.9em;font-size:15px;font-weight:700;color:var(--ink);line-height:1.35}
.mcol .mt span{color:var(--blue);opacity:0;transform:translateX(-4px);transition:.2s}
.mcol:hover .mt span{opacity:1;transform:none}
.msub{margin-top:6px;display:flex;flex-direction:column;gap:6px}
.msub a{display:block;font-size:13px;line-height:1.45;color:var(--steel);
  transition:color .18s,transform .18s}
.msub a:hover{color:var(--blue);transform:translateX(2px)}
.mega-foot{margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px;font-size:12px;color:var(--steel)}
.mega-foot a{color:var(--blue);font-weight:600}

.mega-card{position:relative;display:block;overflow:hidden;background:var(--fog);
  min-height:180px}
.mega-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transition:transform .7s cubic-bezier(.2,.7,.2,1)}
.mega-card:hover img{transform:scale(1.055)}
.mega-card .mc-b{position:absolute;inset:auto 0 0 0;padding:14px 14px 12px;
  background:linear-gradient(180deg,transparent,rgba(9,11,14,.9));color:#fff;
  display:block}
.mega-card .mc-b b{display:block;font-size:14px}
.mega-card .mc-b small{display:block;font-size:11.5px;
  color:rgba(255,255,255,.72);margin-top:2px}

/* ---------- mobile menu --------------------------------------------------- */
.menu-btn{display:none;background:#fff;border:1px solid var(--line);
  width:40px;height:40px;font-size:18px;line-height:1;cursor:pointer;color:var(--ink)}
.mnav{display:none;border-top:1px solid var(--line);background:#fff;
  max-height:calc(100vh - 96px);overflow:auto}
.mnav.open{display:block}
.mnav>.wrap>a,.mnav .macc>summary{display:flex;align-items:center;
  justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--line);
  font-size:15px;font-weight:600}
.macc{border-bottom:1px solid var(--line)}
.macc>summary{list-style:none;cursor:pointer;border-bottom:0}
.macc>summary::-webkit-details-marker{display:none}
.macc[open]>summary{color:var(--blue)}
.macc[open]>summary span{transform:rotate(45deg)}
.macc>summary span{transition:transform .25s;color:var(--steel);font-size:14px}
.macc .ms{display:flex;flex-direction:column;gap:9px;padding:2px 0 16px 12px}
.macc .ms a{font-size:14px;font-weight:400;color:var(--steel);padding:0;border:0}
.macc .ms a:hover{color:var(--blue)}
.macc .ms .mg{font-family:Consolas,monospace;font-size:10px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--blue);margin-top:8px}
.mnav .mcta{padding:16px 0}
.mnav .mcta .btn{width:100%}
.mcontact{display:flex;flex-direction:column;gap:3px;padding:0 0 22px}
.mcontact a{display:flex;align-items:center;gap:8px;font-size:13.5px;
  font-weight:400;color:var(--steel);padding:8px 0;border:0}
.mcontact a:hover{color:var(--blue)}
.mcontact svg{width:14px;height:14px;opacity:.6;flex:0 0 auto}

/* ---------- responsive ---------------------------------------------------- */
@media(max-width:1320px){
  .ub-m{display:none}
}
@media(max-width:1180px){
  .ub-c em{display:none}
}
/* 一级导航从三项扩到五项，桌面宽度收紧内边距，别把右侧按钮挤到换行 */
@media(min-width:981px){
  nav.main{font-size:13px}
  .ni>a{padding:0 8px}
  .ni>a::after{left:8px;right:8px}
  header .wrap{gap:16px}
  .hact .btn.sm{padding:0 12px}
}
@media(max-width:980px){
  nav.main,.hact .btn{display:none}
  .menu-btn{display:block}
  header .wrap{height:60px}
  .logo img{height:24px}
  .ubar .wrap{height:34px}
}
@media(max-width:760px){
  /* 顶栏只留图标和邮箱按钮，二维码入口在公司简介页 */
  .ub-c span{display:none}
  .ub-l{gap:12px}
}
@media(max-width:520px){
  .ub-s.opt{display:none}
}