/* =========================================================
   ENDATA · Shared Stylesheet
   Color palette: #6651A1 (primary) + #4276AA (dusty blue) + 冷钛银 + 黑白
   Font: Microsoft YaHei 微软雅黑
   ========================================================= */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","微软雅黑",-apple-system,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg);color:var(--ink);
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  line-height:1.65;overflow-x:hidden;
  word-break:normal;overflow-wrap:break-word;
}
/* Avoid orphan single character on a new line for both Chinese & English headings */
h1,h2,h3,h4,h5,h6,.section-title,.hero h1,.about-statement{
  word-break:keep-all;overflow-wrap:break-word;hyphens:auto;
}

:root{
  --primary:#6651A1;
  --primary-light:#8B7BB8;
  --primary-lighter:#B1A6C9;
  --primary-softer:#B8C9E3;
  --primary-subtle:#E8EEF8;
  --primary-faint:#DAE3F3;
  --primary-dark:#4D3B80;
  --primary-deep:#362958;

  --blue:#4276AA;
  --blue-light:#6A94C0;
  --blue-subtle:#E6EDF5;
  --blue-faint:#F3F7FB;

  --silver-50:#F6F7FA;
  --silver-100:#EDEFF4;
  --silver-200:#E0E3EB;
  --silver-300:#C8CDD8;
  --silver-400:#A8AEBE;
  --silver-500:#7E8497;
  --silver-600:#5A6071;
  --silver-700:#40455A;

  --ink:#0E0E17;
  --ink-soft:#262632;
  --ink-mute:#4A4A58;
  --white:#FFFFFF;

  --bg:#FAFAFC;
  --bg-surface:#F3F4F8;
  --bg-card:#FFFFFF;

  --gradient-primary:linear-gradient(135deg,#6651A1 0%,#4276AA 100%);
  --gradient-soft:linear-gradient(135deg,#E8EEF8 0%,#E6EDF5 100%);
  --gradient-dark:linear-gradient(135deg,#362958 0%,#1E3350 100%);

  --container:1320px;
  --pad-x:clamp(20px,5vw,72px);
}

img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none;transition:color .2s}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
::selection{background:var(--primary);color:#fff}

.container{max-width:var(--container);margin:0 auto;padding:0 var(--pad-x);position:relative;z-index:2}

.grain{
  position:fixed;inset:0;pointer-events:none;z-index:1;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='.5'/></svg>");
  opacity:.025;mix-blend-mode:multiply;
}

/* ─── Top Nav + Mega Menu ─── */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(250,250,252,.88);
  backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--silver-200);
}
.nav-inner{
  max-width:var(--container);margin:0 auto;padding:0 var(--pad-x);
  height:64px;display:flex;align-items:center;justify-content:space-between;gap:30px;
}
.brand{display:flex;align-items:center;gap:10px}
.brand-logo{height:36px;display:flex;align-items:center}
.brand-logo img{height:36px;width:auto;display:block}
.brand-text{display:none}    /* hide redundant text — image already shows brand */

.nav-links{display:flex;gap:0;font-size:15px;color:var(--ink-mute);font-weight:500;align-items:stretch}
.nav-item{position:relative;display:flex;align-items:stretch}
.nav-item > a{
  display:flex;align-items:center;gap:5px;padding:0 18px;height:64px;
  transition:color .2s;position:relative;
}
.nav-item > a.active{color:var(--primary)}
.nav-item > a:hover{color:var(--primary)}
.nav-item .caret{width:9px;height:9px;transition:transform .3s;opacity:.5;flex-shrink:0}
.nav-item:hover .caret{transform:rotate(180deg);opacity:1;color:var(--primary)}
.nav-item > a::after{
  content:"";position:absolute;bottom:14px;left:18px;right:18px;height:1.5px;
  background:var(--primary);transform:scaleX(0);transform-origin:center;transition:transform .3s;
}
.nav-item:hover > a::after,.nav-item > a.active::after{transform:scaleX(1)}

.mega-menu{
  position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);
  background:var(--white);
  border:1px solid var(--silver-200);
  border-radius:14px;
  box-shadow:0 24px 64px -12px rgba(102,81,161,.18),0 4px 12px -6px rgba(0,0,0,.05);
  padding:24px;
  display:grid;grid-template-columns:repeat(3,minmax(180px,1fr));gap:24px;
  min-width:640px;
  opacity:0;pointer-events:none;transition:all .22s ease;
  z-index:110;
}
.nav-item:hover .mega-menu{opacity:1;pointer-events:auto;transform:translateX(-50%) translateY(0)}

.mega-col h6{
  font-size:10px;color:var(--silver-500);letter-spacing:.2em;
  text-transform:uppercase;margin-bottom:12px;font-weight:700;
  padding-bottom:10px;border-bottom:1px solid var(--silver-200);
}
.mega-link{
  display:flex;flex-direction:column;gap:1px;
  padding:8px 10px;margin:0 -10px;border-radius:6px;
  font-size:13px;color:var(--ink);font-weight:600;
  transition:all .2s;
}
.mega-link:hover{color:var(--primary);background:var(--primary-faint)}
.mega-link .sub{
  font-size:10.5px;color:var(--silver-500);font-weight:400;letter-spacing:.02em;margin-top:1px;
}
.mega-col.feature{
  background:linear-gradient(135deg,var(--primary-faint),var(--blue-faint));
  border-radius:10px;padding:18px;margin:-4px -4px;
  display:flex;flex-direction:column;gap:4px;
}
.mega-col.feature h6{color:var(--primary);border:none;padding:0;margin-bottom:8px}
.mega-col.feature .mega-link{font-size:14px;font-weight:700;padding:4px 0;margin:0;background:none}
.mega-col.feature .mega-link:hover{background:none;color:var(--primary-dark);transform:translateX(2px)}
.mega-col.feature p{font-size:11.5px;color:var(--silver-600);line-height:1.55;margin-top:4px}
.mega-col.feature .feature-icon{
  width:32px;height:32px;border-radius:8px;background:var(--primary);color:#fff;
  display:grid;place-items:center;margin-bottom:6px;
}
.mega-col.feature .feature-icon svg{width:15px;height:15px}

.nav-actions{display:flex;align-items:center;gap:10px}
.lang-switch{
  font-size:11.5px;color:var(--silver-500);
  display:flex;align-items:center;gap:4px;padding:6px 10px;
  border:1px solid var(--silver-200);border-radius:6px;letter-spacing:.12em;font-weight:600;
  text-decoration:none;transition:border-color .2s, color .2s;
}
.lang-switch:hover{border-color:var(--primary)}
.lang-switch a{color:var(--silver-500);padding:0 2px;transition:color .2s}
.lang-switch a:hover{color:var(--primary)}
.lang-switch .active{color:var(--primary)}
.lang-switch .sep{color:var(--silver-300)}

/* Mobile nav toggle (hamburger) */
.nav-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border:1px solid var(--silver-200);border-radius:8px;background:transparent;cursor:pointer;
}
.nav-toggle span{
  display:block;width:18px;height:1.6px;background:var(--ink);position:relative;
  transition:transform .3s, opacity .2s;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.6px;background:var(--ink);
  transition:transform .3s, top .2s;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.open span{background:transparent}
.nav-toggle.open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.open span::after{top:0;transform:rotate(-45deg)}

/* Mobile drawer */
.mobile-drawer{
  position:fixed;top:64px;left:0;right:0;bottom:0;z-index:90;
  background:rgba(255,255,255,.98);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  padding:24px var(--pad-x) 36px;overflow-y:auto;
  transform:translateX(100%);transition:transform .35s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;gap:4px;
}
.mobile-drawer.open{transform:translateX(0)}
.mobile-drawer h6{
  font-size:10px;letter-spacing:.22em;color:var(--silver-500);font-weight:700;
  text-transform:uppercase;padding:14px 4px 8px;
}
.mobile-drawer .m-link{
  display:flex;justify-content:space-between;align-items:center;
  padding:14px 4px;border-bottom:1px solid var(--silver-100);
  font-size:16px;color:var(--ink);font-weight:500;
}
.mobile-drawer .m-link.lvl1{font-weight:600;font-size:18px;border-bottom:1px solid var(--silver-200)}
.mobile-drawer .m-link .sub{font-size:11px;color:var(--silver-500);font-weight:400;letter-spacing:.04em}
.mobile-drawer .m-link:hover,.mobile-drawer .m-link:active{color:var(--primary)}
.mobile-drawer .m-section{margin-bottom:14px}
.mobile-drawer .m-actions{margin-top:24px;display:flex;flex-direction:column;gap:10px}
.mobile-drawer .m-actions .btn{justify-content:center;padding:14px}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:8px;
  font-size:13px;font-weight:500;letter-spacing:.03em;
  transition:all .2s;font-family:inherit;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 1px 0 rgba(54,41,88,.2)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 8px 24px rgba(102,81,161,.25)}
.btn-ghost{color:var(--ink);border:1px solid var(--silver-300)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-arrow{font-size:13px;transition:transform .2s}
.btn:hover .btn-arrow{transform:translateX(3px)}
.btn-lg{padding:13px 24px;font-size:14px}

/* Tablet / mobile responsive nav */
@media (max-width:1100px){
  .nav-links{display:none}
  .nav-actions .btn-ghost{display:none}
  .nav-toggle{display:flex}
}
@media (max-width:640px){
  .nav-actions .btn-primary{padding:8px 12px;font-size:12.5px}
  .nav-actions .btn-primary .btn-arrow{display:none}
}

/* ─── Section base ─── */
.section{padding:clamp(70px,9vw,120px) 0;position:relative}
.section-eyebrow{
  font-size:11px;color:var(--primary);
  letter-spacing:.22em;text-transform:uppercase;margin-bottom:16px;
  display:flex;align-items:center;gap:10px;font-weight:600;
}
.section-eyebrow::before{content:"";width:24px;height:1px;background:var(--primary)}
.section-title{
  font-weight:700;font-size:clamp(28px,3.8vw,48px);
  line-height:1.15;letter-spacing:-.02em;color:var(--ink);
  margin-bottom:22px;max-width:880px;
}
.section-title .em{color:var(--primary)}
.section-sub{
  font-size:clamp(14.5px,1.1vw,16px);color:var(--silver-600);
  max-width:720px;line-height:1.7;
}
.section-head{margin-bottom:52px}

/* ─── Breadcrumb ─── */
.breadcrumb{
  display:flex;align-items:center;gap:10px;
  font-size:12px;color:var(--silver-500);margin-bottom:18px;
  letter-spacing:.03em;
}
.breadcrumb a{color:var(--silver-500);transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--silver-300)}
.breadcrumb .current{color:var(--ink);font-weight:600}

/* ─── Page Hero (for detail pages) ─── */
.page-hero{
  position:relative;padding:112px 0 64px;
  background:var(--bg);overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;top:-200px;right:-100px;
  width:620px;height:620px;background:var(--primary-subtle);
  border-radius:50%;filter:blur(90px);opacity:.5;
}
.page-hero::after{
  content:"";position:absolute;bottom:-150px;left:-80px;
  width:440px;height:440px;background:var(--blue-subtle);
  border-radius:50%;filter:blur(80px);opacity:.6;
}
.page-hero .container{position:relative;z-index:2}
.page-hero-grid{
  display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:end;
}
@media (max-width:900px){.page-hero-grid{grid-template-columns:1fr;gap:32px}}
.page-hero h1{
  font-size:clamp(34px,5vw,60px);font-weight:700;
  line-height:1.1;letter-spacing:-.025em;color:var(--ink);
}
.page-hero h1 .em{color:var(--primary)}
.page-hero h1 .en{
  display:block;font-size:.28em;color:var(--silver-500);
  letter-spacing:.1em;font-weight:500;margin-top:14px;letter-spacing:.08em;
}
.page-hero p.lead{
  font-size:15px;color:var(--silver-600);line-height:1.75;margin-top:20px;
  max-width:540px;
}
.page-hero-meta{
  display:flex;flex-direction:column;gap:14px;padding:24px;
  background:var(--bg-card);border:1px solid var(--silver-200);border-radius:14px;
}
.page-hero-meta .meta-row{
  display:flex;justify-content:space-between;align-items:center;
  font-size:12px;gap:14px;
}
.page-hero-meta .meta-row .k{color:var(--silver-500);letter-spacing:.05em}
.page-hero-meta .meta-row .v{color:var(--ink);font-weight:700}

/* ─── Sticky sub-nav (for detail pages) ─── */
.sub-nav{
  position:sticky;top:64px;z-index:40;
  background:rgba(250,250,252,.92);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-top:1px solid var(--silver-200);
  border-bottom:1px solid var(--silver-200);
}
.sub-nav-inner{
  max-width:var(--container);margin:0 auto;padding:0 var(--pad-x);
  display:flex;gap:2px;overflow-x:auto;scrollbar-width:none;
}
.sub-nav-inner::-webkit-scrollbar{display:none}
.sub-nav a{
  padding:14px 16px;font-size:13px;color:var(--silver-600);font-weight:500;
  white-space:nowrap;border-bottom:2px solid transparent;
  transition:all .2s;
}
.sub-nav a:hover{color:var(--primary)}
.sub-nav a.active{color:var(--primary);border-bottom-color:var(--primary)}

/* ─── CTA banner ─── */
.cta-banner{padding:100px 0;background:var(--bg-surface);position:relative;overflow:hidden}
.cta-banner::before{
  content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:700px;height:700px;background:var(--primary-subtle);border-radius:50%;filter:blur(100px);opacity:.55;
}
.cta-content{text-align:center;position:relative;z-index:2;max-width:760px;margin:0 auto}
.cta-content h2{
  font-size:clamp(30px,4vw,52px);font-weight:700;letter-spacing:-.025em;line-height:1.1;margin-bottom:20px;color:var(--ink);
}
.cta-content h2 .em{color:var(--primary)}
.cta-content p{color:var(--silver-600);font-size:15px;margin-bottom:32px;max-width:540px;margin-left:auto;margin-right:auto;line-height:1.7}
.cta-buttons{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ─── Footer ─── */
.footer{background:var(--ink);color:#fff;padding:64px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:36px;margin-bottom:48px}
@media (max-width:860px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
@media (max-width:540px){.footer-grid{grid-template-columns:1fr}}

.foot-brand{display:flex;flex-direction:column;gap:16px}
.foot-brand .brand-logo{height:38px}
.foot-brand .brand-logo img{height:38px;width:auto}
.foot-brand p{font-size:12.5px;color:var(--silver-400);line-height:1.65;max-width:280px}
.foot-brand .contact{display:flex;flex-direction:column;gap:8px;font-size:12.5px;color:#fff}
.foot-brand .contact .ck{color:var(--silver-500);font-size:10px;letter-spacing:.15em;text-transform:uppercase;margin-bottom:4px;font-weight:600}

.foot-col h6{font-size:11px;color:var(--silver-400);letter-spacing:.18em;text-transform:uppercase;margin-bottom:14px;font-weight:600}
.foot-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.foot-col li a{font-size:13px;color:var(--silver-300);transition:color .2s}
.foot-col li a:hover{color:var(--primary-lighter)}

.footer-bottom{
  padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;
  font-size:11px;color:var(--silver-500);letter-spacing:.03em;
}
.footer-bottom .fb-right{display:flex;gap:16px}
.footer-bottom a:hover{color:var(--silver-300)}

/* ─── Reveal ─── */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:none}

/* ─── Animations ─── */
@keyframes pulse{50%{opacity:.35;transform:scale(.7)}}
@keyframes rot{to{transform:rotate(360deg)}}
@keyframes dataFlow{to{stroke-dashoffset:-40}}
.data-flow-line{stroke-dasharray:4 4;animation:dataFlow 2s linear infinite}

/* ─── Scrollbar ─── */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-surface)}
::-webkit-scrollbar-thumb{background:var(--silver-300);border-radius:5px}
::-webkit-scrollbar-thumb:hover{background:var(--silver-400)}

/* ─── Shared: Card base ─── */
.card-base{
  background:var(--bg-card);border:1px solid var(--silver-200);border-radius:14px;
  padding:28px;transition:all .3s;
}
.card-base:hover{border-color:var(--primary-lighter);box-shadow:0 16px 40px -16px rgba(102,81,161,.2)}

/* ─── Shared: Dataset / product card list ─── */
.list-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}

/* ─── Icon chip ─── */
.ic-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 13px;border-radius:6px;
  background:var(--bg-card);border:1px solid var(--silver-200);
  font-size:12px;color:var(--silver-600);font-weight:500;
}
.ic-chip svg{width:14px;height:14px;color:var(--primary)}