:root{
  --navy:#001645;
  --navy-2:#0A2560;
  --blue:#014DB2;
  --blue-l:#1D6FD8;
  --sky:#7FD1FF;
  --paper:#FAFAF7;
  --beige:#F2EFE6;
  --ink:#16181C;
  --muted:#5C5F66;
  --line:#E5E1D6;
  --white:#FFFFFF;
  --max:1180px;
  --r-lg:32px;
  --r-md:24px;
  --r-sm:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--paper);color:var(--ink);
  -webkit-font-smoothing:antialiased;line-height:1.6;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 32px}

/* ---------- nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:background .35s ease, box-shadow .35s ease, padding .35s ease;
  padding:20px 0;
}
.nav.solid{
  background:rgba(250,250,247,.94);
  backdrop-filter:saturate(180%) blur(14px);
  box-shadow:0 1px 0 rgba(0,22,69,.08);
  padding:12px 0;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--blue);display:grid;place-items:center;flex:none}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.02em;color:#fff;transition:color .35s}
.brand-sub{font-size:11px;letter-spacing:.14em;color:rgba(255,255,255,.62);transition:color .35s}
.nav.solid .brand-name{color:var(--ink)}
.nav.solid .brand-sub{color:#8A8D93}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{font-size:14px;color:rgba(255,255,255,.78);transition:color .2s;position:relative;padding:4px 0}
.nav-links a:hover{color:#fff}
.nav.solid .nav-links a{color:#4A4D53}
.nav.solid .nav-links a:hover{color:var(--blue)}
.nav-links a.active{color:#fff;font-weight:600}
.nav.solid .nav-links a.active{color:var(--blue)}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:var(--sky);
}
.nav.solid .nav-links a.active::after{background:var(--blue)}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 22px;border-radius:999px;background:var(--blue);color:#fff;
  font-size:14px;font-weight:600;transition:transform .2s, background .2s;
}
.nav-cta:hover{background:var(--blue-l);transform:translateY(-1px)}
.nav-toggle{display:none;background:none;border:none;color:#fff;cursor:pointer;padding:6px}
.nav.solid .nav-toggle{color:var(--ink)}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(1100px 620px at 78% 6%, rgba(29,111,216,.55) 0%, rgba(29,111,216,0) 62%),
    linear-gradient(155deg,#014DB2 0%, #0A2560 46%, #001645 100%);
  color:#fff;padding:170px 0 0;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(circle at 30% 30%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 30% 30%,#000 0%,transparent 72%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center;padding-bottom:76px}
.badge{
  display:inline-flex;align-items:center;gap:9px;padding:8px 18px;border-radius:999px;
  background:rgba(255,255,255,.13);font-size:13px;color:#BBD7F5;font-weight:500;
  border:1px solid rgba(255,255,255,.14);
}
.dot-live{width:6px;height:6px;border-radius:50%;background:var(--sky);box-shadow:0 0 0 4px rgba(127,209,255,.18)}
h1{
  font-size:clamp(34px,4.4vw,56px);line-height:1.18;font-weight:700;
  letter-spacing:-.02em;margin:26px 0 22px;
}
h1 .thin{color:#9DC6F2}
.hero p.lead{font-size:16.5px;line-height:1.85;color:#C9DDF3;max-width:560px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:15px 32px;border-radius:999px;
  font-size:15px;font-weight:600;transition:transform .2s,box-shadow .2s,background .2s;
}
.btn-primary{background:#fff;color:var(--blue)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(0,0,0,.22)}
.btn-ghost{border:1px solid rgba(255,255,255,.4);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-solid{background:var(--blue);color:#fff}
.btn-solid:hover{background:var(--blue-l);transform:translateY(-2px)}
.btn-line{border:1px solid rgba(1,77,178,.35);color:var(--blue)}
.btn-line:hover{background:rgba(1,77,178,.06)}

.spec{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.13);
  border-radius:var(--r-md);padding:8px 26px;backdrop-filter:blur(6px);
}
.spec-row{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:15px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.spec-row:last-child{border-bottom:none}
.spec-k{font-size:12.5px;color:#8FB4DC;letter-spacing:.04em}
.spec-v{font-size:14.5px;font-weight:600;color:#fff;text-align:right}

.strip{
  position:relative;border-top:1px solid rgba(255,255,255,.12);
  display:grid;grid-template-columns:repeat(4,1fr);
}
.strip-item{padding:28px 8px;text-align:center;border-right:1px solid rgba(255,255,255,.09)}
.strip-item:last-child{border-right:none}
.strip-num{font-size:32px;font-weight:700;letter-spacing:-.02em;color:#fff}
.strip-num small{font-size:15px;font-weight:500;margin-left:2px;color:#9DC6F2}
.strip-label{font-size:12.5px;color:#8FB4DC;margin-top:4px}

/* ---------- inner page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;padding:150px 0 66px;
  background:
    radial-gradient(900px 480px at 82% 0%, rgba(29,111,216,.5) 0%, rgba(29,111,216,0) 66%),
    linear-gradient(155deg,#014DB2 0%, #0A2560 52%, #001645 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 26% 24%,#000 0%,transparent 70%);
  -webkit-mask-image:radial-gradient(circle at 26% 24%,#000 0%,transparent 70%);
}
.page-hero .wrap{position:relative}
.crumb{font-size:12.5px;color:#8FB4DC;letter-spacing:.04em;margin-bottom:20px}
.crumb a:hover{color:#fff}
.crumb span{color:#5E7FA6;margin:0 8px}
.page-hero h1{font-size:clamp(30px,3.4vw,44px);margin:0 0 16px}
.page-hero p{font-size:15.5px;color:#C9DDF3;line-height:1.85;max-width:680px}

/* ---------- section base ---------- */
section{padding:96px 0}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.18em;
  color:var(--blue);margin-bottom:16px;
}
h2{font-size:clamp(26px,3vw,38px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
.sec-head{margin-bottom:48px;max-width:760px}
.sec-head p{margin-top:14px;color:var(--muted);font-size:15.5px}
.sec-head.center{text-align:center;margin-left:auto;margin-right:auto}
.sec-head.row{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;max-width:none;flex-wrap:wrap}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:64px;align-items:start}
.about-text p{font-size:15.5px;line-height:1.9;color:#3D4046;margin-bottom:20px}
.about-text p:last-child{margin-bottom:0}
.about-text strong{color:var(--ink);font-weight:600}
.pull{
  margin-top:30px;padding:22px 26px;border-left:3px solid var(--blue);
  background:var(--beige);border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:15px;color:var(--navy);font-weight:500;
}
.facts{border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:var(--paper)}
.fact{display:flex;justify-content:space-between;gap:18px;padding:17px 22px;border-bottom:1px solid var(--line);font-size:14px}
.fact:last-child{border-bottom:none}
.fact-k{color:#8A8D93;flex:none}
.fact-v{font-weight:600;color:var(--ink);text-align:right}

/* ---------- history ---------- */
.tl{position:relative;padding-left:34px}
.tl::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:linear-gradient(var(--blue),rgba(1,77,178,.12))}
.tl-item{position:relative;padding-bottom:38px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-34px;top:6px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--blue);box-shadow:0 0 0 4px rgba(1,77,178,.08);
}
.tl-year{font-size:13px;font-weight:700;color:var(--blue);letter-spacing:.06em}
.tl-title{font-size:18px;font-weight:600;margin:6px 0 6px}
.tl-desc{font-size:14.5px;color:var(--muted);line-height:1.8;max-width:640px}

/* ---------- culture ---------- */
.cul-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cul-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  padding:32px 30px;transition:transform .25s,box-shadow .25s;
}
.cul-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(0,22,69,.08)}
.cul-tag{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--blue);margin-bottom:12px}
.cul-title{font-size:19px;font-weight:600;line-height:1.5;margin-bottom:8px}
.cul-desc{font-size:14px;color:var(--muted);line-height:1.75}
.values{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.value{
  padding:9px 20px;border-radius:999px;background:var(--navy);color:#D8E6F7;
  font-size:13.5px;letter-spacing:.06em;
}

/* ---------- capability ---------- */
.dark{background:var(--navy);color:#fff}
.dark .eyebrow{color:var(--sky)}
.dark h2{color:#fff}
.dark .sec-head p{color:#9DB8D6}
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:52px}
.cap-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--r-md);padding:28px 24px;transition:background .25s;
}
.cap-card:hover{background:rgba(255,255,255,.1)}
.cap-ico{width:38px;height:38px;border-radius:11px;background:rgba(127,209,255,.14);display:grid;place-items:center;margin-bottom:18px}
.cap-title{font-size:16px;font-weight:600;margin-bottom:8px}
.cap-desc{font-size:13.5px;color:#9DB8D6;line-height:1.75}

.eq-title{font-size:13px;letter-spacing:.14em;color:#8FB4DC;font-weight:600;margin-bottom:16px}
table{width:100%;border-collapse:collapse;font-size:14px}
thead th{
  text-align:left;font-size:12px;letter-spacing:.1em;color:#8FB4DC;font-weight:600;
  padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.16);
}
tbody td{padding:14px 16px;border-bottom:1px solid rgba(255,255,255,.08);color:#D6E3F2}
tbody tr:hover td{background:rgba(255,255,255,.04)}
tbody td:first-child{color:#fff;font-weight:500}
.eq-note{margin-top:16px;font-size:13px;color:#8FB4DC}

/* ---------- products ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.prod{
  background:#fff;border-radius:var(--r-md);padding:30px 28px 32px;
  border:1px solid var(--line);position:relative;overflow:hidden;
  transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column;
}
.prod:hover{transform:translateY(-4px);box-shadow:0 20px 44px rgba(0,22,69,.09)}
.prod-idx{
  position:absolute;right:20px;top:10px;font-size:56px;font-weight:700;
  color:rgba(1,77,178,.07);letter-spacing:-.04em;line-height:1;
}
.prod-tag{font-size:12px;font-weight:700;color:var(--blue);letter-spacing:.08em}
.prod-name{font-size:19px;font-weight:600;margin:8px 0 12px}
.prod-desc{font-size:14px;color:var(--muted);line-height:1.8}
.prod-list{margin-top:auto;padding-top:16px;display:flex;flex-wrap:wrap;gap:7px}
.chip{font-size:12px;padding:5px 12px;border-radius:999px;background:var(--beige);color:#4A4D53}
.prod.flagship{border-color:rgba(1,77,178,.26);box-shadow:0 10px 30px rgba(1,77,178,.07)}
.flag{
  display:inline-block;font-size:11px;font-weight:700;letter-spacing:.04em;
  color:#fff;background:var(--blue);padding:3px 9px;border-radius:999px;
  margin-left:8px;vertical-align:2px;
}

/* ---------- pp band ---------- */
.pp-band{
  margin-top:40px;border-radius:var(--r-md);padding:42px 44px;
  background:linear-gradient(125deg,#014DB2,#001645);color:#fff;
}
.pp-tag{font-size:11.5px;font-weight:700;letter-spacing:.2em;color:var(--sky)}
.pp-title{font-size:24px;font-weight:700;margin-top:10px}
.pp-lead{font-size:14.5px;color:#C9DDF3;line-height:1.95;margin-top:12px;max-width:820px}
.pp-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:28px;
  margin-top:28px;padding-top:26px;border-top:1px solid rgba(255,255,255,.16);
}
.pp-k{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--sky);margin-bottom:8px}
.pp-v{font-size:13.5px;color:#D6E3F2;line-height:1.85}
.pp-foot{
  margin-top:26px;padding-left:14px;border-left:2px solid rgba(127,209,255,.55);
  font-size:13px;color:#9DC6F2;line-height:1.8;
}
.pp-mats{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.pp-mat{
  font-size:12.5px;padding:6px 14px;border-radius:999px;
  border:1px solid rgba(255,255,255,.2);color:#C9DDF3;
}
.pp-mat b{color:#fff;font-weight:600}
.pp-mat.hot{background:rgba(127,209,255,.16);border-color:rgba(127,209,255,.5)}
.pp-mat.hot b{color:#7FD1FF}
/* PP 包胶关键指标条 */
.pp-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:24px}
.pp-metric{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.15);border-radius:16px;padding:16px 18px}
.pp-metric b{display:block;font-size:27px;font-weight:700;color:var(--sky);line-height:1.05;letter-spacing:-.02em}
.pp-metric b small{font-size:12.5px;font-weight:600;margin-left:2px;letter-spacing:0}
.pp-metric span{display:block;font-size:12.5px;color:#C9DDF3;line-height:1.65;margin-top:7px}

/* ---------- industries ---------- */
.ind-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.ind-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--r-md);padding:30px 26px;transition:background .25s,transform .25s;
}
.ind-card:hover{background:rgba(255,255,255,.09);transform:translateY(-3px)}
.ind-ico{width:40px;height:40px;border-radius:12px;background:rgba(127,209,255,.14);display:grid;place-items:center;margin-bottom:18px}
.ind-name{font-size:17px;font-weight:600;margin-bottom:8px}
.ind-desc{font-size:13.5px;color:#9DB8D6;line-height:1.8}

/* ---------- knowledge ---------- */
.kb-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.art{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px 26px 26px;display:flex;flex-direction:column;
  transition:transform .25s,box-shadow .25s;
}
.art:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(0,22,69,.08)}
.art-cat{font-size:12px;font-weight:700;color:var(--blue);letter-spacing:.08em}
.art-title{font-size:17.5px;font-weight:600;line-height:1.55;margin:10px 0 10px}
.art-ex{font-size:13.5px;color:var(--muted);line-height:1.8;flex:1}
.art-meta{font-size:12px;color:#9A9DA3;margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}
.art-feat{
  grid-column:1 / -1;display:grid;grid-template-columns:1fr 1fr;gap:0;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
}
.art-feat .af-visual{
  background:linear-gradient(150deg,#0A2560,#001645);color:#fff;padding:34px 32px;
  display:flex;flex-direction:column;justify-content:space-between;min-height:280px;
}
.af-visual .af-k{font-size:11.5px;letter-spacing:.2em;color:var(--sky);font-weight:700}
.af-visual .af-q{font-size:22px;font-weight:700;line-height:1.5;margin-top:16px}
.af-visual .af-n{font-size:12.5px;color:#8FB4DC;margin-top:18px}
.art-feat .af-body{padding:36px 34px;display:flex;flex-direction:column;justify-content:center}
.art-feat h3{font-size:24px;font-weight:700;line-height:1.45;margin:12px 0 14px}
.art-feat p{font-size:14.5px;color:var(--muted);line-height:1.9}
.af-link{margin-top:22px;font-size:14px;font-weight:600;color:var(--blue);display:inline-flex;align-items:center;gap:8px}

/* ---------- honor ---------- */
.cert-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:44px}
.cert{border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:var(--paper)}
.cert img{width:100%;height:auto;background:#fff}
.cert-cap{padding:18px 24px;border-top:1px solid var(--line)}
.cert-name{font-size:15px;font-weight:600;margin-bottom:4px}
.cert-meta{font-size:12.5px;color:#8A8D93;line-height:1.7}
.honor-note{
  display:flex;align-items:center;gap:20px;justify-content:space-between;flex-wrap:wrap;
  padding:26px 32px;border-radius:var(--r-md);background:var(--beige);
}
.honor-note b{font-size:24px;color:var(--blue);font-weight:700}
.honor-note span{font-size:14px;color:var(--muted)}

/* ---------- contact ---------- */
.contact-band{background:linear-gradient(160deg,#014DB2,#001645);color:#fff;padding:88px 0 0}
.contact-band .eyebrow{color:var(--sky)}
.contact-band h2{color:#fff}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.contact-lead{font-size:15.5px;color:#C9DDF3;line-height:1.9;margin-top:16px;max-width:440px}
.c-list{margin-top:32px;display:grid;gap:18px}
.c-item{display:flex;gap:14px;align-items:flex-start}
.c-ico{width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.12);display:grid;place-items:center;flex:none}
.c-k{font-size:12px;color:#8FB4DC;letter-spacing:.06em;margin-bottom:2px}
.c-v{font-size:15px;color:#fff;font-weight:500;line-height:1.6}
.inquiry{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-md);padding:34px 32px;
}
.inquiry h3{font-size:19px;font-weight:600;margin-bottom:8px}
.inquiry p{font-size:14px;color:#9DB8D6;line-height:1.8;margin-bottom:22px}
.inq-row{display:grid;gap:12px}
.inq-field{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);
  border-radius:12px;padding:14px 16px;color:#fff;font-size:14px;font-family:inherit;width:100%;
}
.inq-field::placeholder{color:#8FB4DC}
.inq-btn{
  margin-top:6px;padding:15px;border:none;border-radius:12px;background:#fff;color:var(--blue);
  font-size:15px;font-weight:600;font-family:inherit;cursor:pointer;transition:background .2s;
}
.inq-btn:hover{background:#EAF2FC}
.inq-tip{font-size:12px;color:#8FB4DC;margin-top:12px;margin-bottom:0}

/* ---------- footer ---------- */
footer{border-top:1px solid rgba(255,255,255,.12);margin-top:76px;padding:32px 0 40px}
.foot-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12.5px;color:#8FB4DC}
.foot-inner a:hover{color:#fff}

/* ---------- prose (article) ---------- */
.prose{max-width:760px}
.prose h2{font-size:26px;margin:44px 0 16px}
.prose h3{font-size:19px;font-weight:600;margin:34px 0 12px}
.prose p{font-size:15.5px;line-height:2;color:#3D4046;margin-bottom:18px}
.prose ul{margin:0 0 18px 20px}
.prose li{font-size:15.5px;line-height:1.95;color:#3D4046;margin-bottom:8px}
.prose blockquote{
  margin:26px 0;padding:20px 24px;background:var(--beige);border-left:3px solid var(--blue);
  border-radius:0 var(--r-sm) var(--r-sm) 0;font-size:15px;color:var(--navy);
}
.prose table{font-size:14px;margin:24px 0}
.prose thead th{color:var(--muted);border-bottom:1px solid var(--line);background:transparent;font-size:12.5px}
.prose tbody td{border-bottom:1px solid var(--line);color:#3D4046}
.prose tbody td:first-child{color:var(--ink)}
.prose tbody tr:hover td{background:rgba(1,77,178,.03)}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}}

/* ---------- language switch ---------- */
.nav-right{display:flex;align-items:center;gap:12px;flex:none}
.lang-btn{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 15px;border-radius:999px;flex:none;
  border:1px solid rgba(255,255,255,.34);color:#fff;
  font-size:12.5px;font-weight:600;letter-spacing:.05em;
  transition:background .2s,border-color .2s,color .2s;
}
.lang-btn svg{opacity:.8}
.lang-btn:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.6)}
.nav.solid .lang-btn{color:var(--blue);border-color:rgba(1,77,178,.28)}
.nav.solid .lang-btn:hover{background:rgba(1,77,178,.07);border-color:rgba(1,77,178,.5)}

/* English typography: latin-first stack, no CJK metrics */
html[lang="en"] body{
  font-family:"Inter","Helvetica Neue",-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  letter-spacing:-.005em;
}
html[lang="en"] h1,html[lang="en"] h2,html[lang="en"] h3{letter-spacing:-.025em}
html[lang="en"] .eyebrow{letter-spacing:.16em}
html[lang="en"] .lead,html[lang="en"] .pd-desc,html[lang="en"] .prod-desc,html[lang="en"] .prose p{line-height:1.8}
html[lang="en"] .brand-name{letter-spacing:0}
html[lang="en"] .strip-num small{margin-left:3px}

/* language suggestion strip (Chinese pages, non-Chinese browsers) */
.lang-strip{
  position:fixed;left:50%;bottom:22px;z-index:200;
  transform:translate(-50%,140%);
  display:flex;align-items:center;gap:14px;
  padding:13px 16px 13px 22px;border-radius:999px;
  background:rgba(0,22,69,.96);color:#fff;
  box-shadow:0 14px 40px rgba(0,22,69,.3);
  font-size:13.5px;backdrop-filter:blur(10px);
  transition:transform .45s cubic-bezier(.2,.7,.3,1);
  max-width:calc(100% - 40px);
}
.lang-strip.show{transform:translate(-50%,0)}
.lang-strip span{opacity:.86;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lang-strip a{color:#7FD1FF;font-weight:600;white-space:nowrap}
.lang-strip a:hover{text-decoration:underline}
.lang-strip button{
  background:none;border:none;color:rgba(255,255,255,.55);cursor:pointer;
  font-size:19px;line-height:1;padding:0 4px;font-family:inherit;
}
.lang-strip button:hover{color:#fff}

/* ---------- photo slots ----------
   实拍图位机制：.ph 容器内放一张 img。
   - 图片加载成功 → .ph 获得 .has-img，自动显示并按比例裁切
   - 图片不存在 → 整块 display:none，完全不占位，页面与未接图时完全一致
   把照片按约定文件名放进 assets/img/ ，刷新即生效，不需要改任何代码。
*/
.ph{display:none;position:relative;overflow:hidden;border-radius:var(--r-md);background:#ECE8DD}
.ph.has-img{display:block}
.ph img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .7s cubic-bezier(.2,.7,.3,1)}
.ph.r-21x9{aspect-ratio:21/9}
.ph.r-16x9{aspect-ratio:16/9}
.ph.r-3x2{aspect-ratio:3/2}
.ph.r-4x3{aspect-ratio:4/3}
.ph.r-1x1{aspect-ratio:1/1}
/* 首页「关于」区：车间全景带 */
.about-shot{margin:0 0 56px;border-radius:var(--r-lg)}
/* 产品卡：有图时图片满宽出血，文字回到内边距里 */
.prod{padding:0}
.prod-body{position:relative;padding:30px 28px 32px;display:flex;flex-direction:column;flex:1}
.prod-shot{border-radius:0}
.prod-shot img{transition:transform .7s cubic-bezier(.2,.7,.3,1)}
.prod:hover .prod-shot img{transform:scale(1.035)}
.prod:hover .prod-idx{color:rgba(255,255,255,.92);text-shadow:0 2px 14px rgba(0,22,69,.4)}
/* 深色区图位（能力卡） */
.cap-shot{margin:-6px 0 20px;border-radius:12px;background:rgba(255,255,255,.08)}
@media (max-width:640px){
  .about-shot{margin-bottom:36px}
  .prod-body{padding:24px 22px 26px}
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav-links.open{
    display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;
    gap:0;background:rgba(250,250,247,.98);padding:12px 32px 20px;
    box-shadow:0 12px 30px rgba(0,22,69,.1);
  }
  .nav-links.open a{color:#4A4D53;padding:12px 0;border-bottom:1px solid var(--line);width:100%}
  .nav-links.open a.active{color:var(--blue)}
  .nav-links.open a.active::after{display:none}
}
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:36px}
  .cap-grid,.ind-grid{grid-template-columns:1fr 1fr}
  .pp-grid{grid-template-columns:1fr;gap:20px}
  .pp-band{padding:32px 26px}
  .prod-grid,.kb-grid{grid-template-columns:1fr 1fr}
  .cul-grid{grid-template-columns:1fr}
  .art-feat{grid-column:1 / -1;grid-template-columns:1fr}
  .art-feat .af-visual{min-height:auto}
}
/* ---------- site footer ---------- */
.site-footer{background:var(--navy);color:#9DB8D6;padding:64px 0 30px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px}
.foot-logo{font-size:19px;font-weight:700;color:#fff;letter-spacing:.02em;margin-bottom:14px}
.foot-about{font-size:13px;line-height:1.9;color:#9DB8D6;max-width:320px}
.foot-badge{display:inline-flex;gap:8px;margin-top:18px;flex-wrap:wrap}
.foot-badge span{font-size:11.5px;padding:5px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.18);color:#C9DDF3}
.foot-h{font-size:13px;font-weight:600;color:#fff;letter-spacing:.06em;margin-bottom:16px}
.foot-ul{list-style:none;display:grid;gap:10px}
.foot-ul a,.foot-ul li{font-size:13px;color:#9DB8D6;line-height:1.6}
.foot-ul a:hover{color:#fff}
.foot-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:#6B84A3;
}

/* ---------- cta band ---------- */
.cta-band{
  background:linear-gradient(120deg,#014DB2,#001645);color:#fff;
  padding:64px 48px;border-radius:var(--r-lg);
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(24px,2.6vw,32px);color:#fff;line-height:1.35}
.cta-band p{font-size:14.5px;color:#C9DDF3;margin-top:12px;line-height:1.85;max-width:640px}

/* ---------- product detail rows ---------- */
.pd-row{
  display:grid;grid-template-columns:88px 1fr 320px;gap:40px;
  padding:44px 0;border-top:1px solid var(--line);
}
.pd-row:last-child{border-bottom:1px solid var(--line)}
.pd-no{font-size:44px;font-weight:700;color:rgba(1,77,178,.14);line-height:1;letter-spacing:-.03em}
.pd-tag{font-size:12px;font-weight:700;color:var(--blue);letter-spacing:.1em}
.pd-name{font-size:24px;font-weight:700;margin:10px 0 14px}
.pd-desc{font-size:15px;color:#3D4046;line-height:1.95;max-width:640px}
.pd-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.pd-side{background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);padding:24px 24px}
.pd-side-h{font-size:12px;font-weight:700;letter-spacing:.1em;color:#8A8D93;margin-bottom:14px}
.pd-spec{display:flex;justify-content:space-between;gap:14px;font-size:13.5px;padding:9px 0;border-bottom:1px dashed var(--line)}
.pd-spec:last-child{border-bottom:none}
.pd-spec b{font-weight:600;color:var(--ink);text-align:right}

/* ---------- kb filters ---------- */
.kb-cats{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:36px}

/* ---------- curriculum map ---------- */
.cur-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.cur-card{
  display:block;padding:26px 28px;border-radius:20px;background:#fff;
  border:1px solid var(--line);text-decoration:none;color:inherit;
  transition:border-color .25s,transform .25s,box-shadow .25s;
}
.cur-card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(0,22,69,.08)}
.cur-card.cur-live{border-color:rgba(1,77,178,.42)}
.cur-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:13px}
.cur-num{font-size:25px;font-weight:700;color:var(--blue);letter-spacing:.04em}
.cur-status{font-size:11.5px;color:var(--blue);border:1px solid rgba(1,77,178,.32);padding:4px 11px;border-radius:999px;letter-spacing:.04em}
.cur-status.muted{color:#98A0AC;border-color:var(--line)}
.cur-card h3{font-size:19px;color:var(--navy);font-weight:700;margin:0}
.cur-card h3 em{font-style:normal;font-size:12px;color:var(--muted);margin-left:9px;font-weight:500;letter-spacing:.05em}
.cur-card p{font-size:14px;color:#4A5160;margin:9px 0 13px;line-height:1.7}
.cur-ch{font-size:12.5px;color:#8A8F98;line-height:2;display:block}
/* 学院分类内的快问快答子行 */
.qa-row{margin-top:18px;padding-top:14px;border-top:1px dashed #E3E8EF;display:flex;flex-wrap:wrap;gap:12px;align-items:stretch}
.qa-row-h{flex:0 0 auto;align-self:center;font-size:13px;color:#8A8F98;padding-right:6px}
.qa-mini{flex:1 1 220px;max-width:330px;display:block;background:#fff;border:1px solid #E3E8EF;border-radius:10px;padding:12px 14px;text-decoration:none;transition:border-color .15s}
.qa-mini b{display:block;color:#12263A;font-size:14px;font-weight:600}
.qa-mini span{display:block;color:#6B7A89;font-size:12.5px;line-height:1.6;margin-top:4px}
.qa-mini:hover{border-color:#0F62FE}
.qa-more{flex:1 1 220px;max-width:330px;display:block;background:#0B2540;border-radius:10px;padding:12px 14px}
.qa-more b{display:block;color:#fff;font-size:14px}
.qa-more span{display:block;color:#B9C7D6;font-size:12.5px;line-height:1.6;margin-top:4px}
.kb-sec{margin-bottom:44px}
.kb-sec:last-child{margin-bottom:0}
.kb-h{display:flex;align-items:baseline;gap:10px;font-size:21px;color:var(--navy);font-weight:700;margin:0 0 6px}
.kb-h em{font-style:normal;font-size:12px;color:var(--muted);font-weight:500;letter-spacing:.05em}
.kb-h .cnt{font-size:12px;color:var(--blue);background:rgba(1,77,178,.07);border-radius:999px;padding:3px 10px;font-weight:600;white-space:nowrap}
.kb-sub{font-size:13.5px;color:#6B7A89;margin:0 0 18px}
.kb-sec .kb-grid{margin-top:0}
.cur-toc{font-size:12.5px;line-height:2.1;display:block;margin-top:2px}
.cur-toc a{color:var(--blue);font-weight:600;text-decoration:none;border-bottom:1px dashed rgba(1,77,178,.4);padding-bottom:1px}
.cur-toc a:hover{border-bottom-style:solid}
.cur-toc .todo{color:#B4BAC4}
/* 卡片内已上线文章的二级目录块 */
.cur-docs{display:block;margin-top:10px;padding-top:10px;border-top:1px dashed var(--line)}
.cur-docs-h{display:block;font-size:11.5px;color:#98A0AC;letter-spacing:.08em;margin-bottom:4px}
.cur-docs a{display:block;font-size:13px;color:var(--blue);text-decoration:none;line-height:2;padding-left:14px;position:relative}
.cur-docs a::before{content:"›";position:absolute;left:0;color:rgba(1,77,178,.5)}
.cur-docs a:hover{text-decoration:underline}
@media (max-width:760px){.cur-grid{grid-template-columns:1fr}}
.kb-cat{
  font-size:13px;padding:9px 18px;border-radius:999px;border:1px solid var(--line);
  color:var(--muted);background:var(--white);cursor:pointer;font-family:inherit;
  transition:all .2s;
}
.kb-cat.on,.kb-cat:hover{background:var(--blue);border-color:var(--blue);color:#fff}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{padding:26px 0;border-bottom:1px solid var(--line)}
.faq-q{font-size:16.5px;font-weight:600;display:flex;justify-content:space-between;gap:20px;align-items:baseline}
.faq-a{font-size:14.5px;color:var(--muted);line-height:1.9;margin-top:12px;max-width:820px}

@media (max-width:980px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:34px}
  .pd-row{grid-template-columns:1fr;gap:20px}
  .pd-no{font-size:32px}
  .cta-band{padding:44px 28px}
}
@media (max-width:640px){
  .wrap{padding:0 20px}
  .nav-cta{display:none}
  .nav-right{gap:8px}
  .lang-btn{padding:8px 12px;font-size:11.5px}
  section{padding:64px 0}
  .hero{padding-top:132px}
  .page-hero{padding:120px 0 52px}
  .strip{grid-template-columns:1fr 1fr}
  .strip-item:nth-child(2){border-right:none}
  .strip-item:nth-child(1),.strip-item:nth-child(2){border-bottom:1px solid rgba(255,255,255,.09)}
  .cap-grid,.prod-grid,.cert-grid,.kb-grid,.ind-grid{grid-template-columns:1fr}
  .pp-metrics{grid-template-columns:1fr}
  .art-feat{grid-column:span 1}
  .brand-sub{display:none}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;gap:8px}
  h1{font-size:32px}
  .honor-note{flex-direction:column;align-items:flex-start;gap:10px}
}

/* 数据口径说明 */
.data-note-sec{padding:0 0 88px}
.data-note{max-width:760px;border-left:3px solid #C9D6E4;background:#F7F8FA;border-radius:0 10px 10px 0;padding:22px 26px}
.data-note .dn-h{font-size:11px;letter-spacing:.14em;color:#014DB2;font-weight:700;margin-bottom:10px;text-transform:uppercase}
.data-note p{font-size:13px;line-height:1.85;color:#5C6470;margin:0 0 8px}
.data-note p:last-child{margin-bottom:0}
.data-note a{color:#014DB2;text-decoration:underline}
@media(max-width:720px){.data-note-sec{padding:0 0 56px}.data-note{padding:18px 20px}}