/* ============ Design Tokens ============ */
:root{
  --bg:#f1f6fd;
  --bg-2:#e7eefb;
  --surface:#ffffff;
  --surface-2:#f5f9ff;
  --line:rgba(25,58,110,.1);
  --line-strong:rgba(25,58,110,.18);
  --text:#0b1f3a;
  --text-2:#3e5a80;
  --text-3:#7c90ad;
  --accent:#0284c7;
  --accent-2:#06b6d4;
  --accent-dim:rgba(2,132,199,.08);
  --ok:#34d399;
  --warn:#fbbf24;
  --font-display:"Manrope","Inter","PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,"Segoe UI",sans-serif;
  --font-sans:"Inter","PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Courier New",monospace;
  --nav-h:72px;
  --radius:16px;
  --ease:cubic-bezier(.22,.61,.21,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + var(--topbar-h) + 8px)}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:rgba(2,132,199,.18);color:#0f2340}
img,svg{display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{width:min(1200px,calc(100% - 48px));margin:0 auto}
.mono{font-family:var(--font-mono)}
.hairline{height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);border:0}

/* ============ Background texture ============ */
.bg-noise{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(23,52,102,.055) 1px,transparent 1px);
  background-size:26px 26px;
  mask-image:radial-gradient(120% 90% at 50% 0%,#000 30%,transparent 100%);
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%,#000 30%,transparent 100%);
}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;border-radius:10px;
  font-family:var(--font-sans);font-size:15px;font-weight:600;
  letter-spacing:.02em;cursor:pointer;border:1px solid transparent;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),background .35s var(--ease),border-color .35s var(--ease);
  position:relative;overflow:hidden;white-space:nowrap;
}
.btn .arr{transition:transform .35s var(--ease)}
.btn:hover .arr{transform:translateX(4px)}
.btn-primary{
  color:#fff;
  background:linear-gradient(120deg,var(--accent),var(--accent-2));
  box-shadow:0 10px 30px -12px rgba(2,132,199,.45);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px -12px rgba(2,132,199,.5)}
.btn-ghost{color:var(--text);border-color:var(--line-strong);background:rgba(255,255,255,.6)}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(2,132,199,.45);background:var(--accent-dim)}

/* ============ Nav ============ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--nav-h);
  display:flex;align-items:center;
  transition:background .4s var(--ease),border-color .4s var(--ease),backdrop-filter .4s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:12px}
.logo-mark{width:38px;height:38px;flex:none}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-cn{font-family:var(--font-display);font-weight:800;font-size:17px;letter-spacing:.14em}
.logo-en{font-family:var(--font-mono);font-size:10px;color:var(--text-3);letter-spacing:.34em}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{
  font-size:14.5px;color:var(--text-2);position:relative;
  transition:color .3s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:100%;bottom:-6px;height:1px;
  background:linear-gradient(90deg,var(--accent),transparent);
  transition:right .35s var(--ease);
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{right:0}
.nav-cta{display:flex;align-items:center;gap:18px}
.nav-cta .btn{padding:10px 20px;font-size:14px}
.nav-burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-burger span{width:22px;height:2px;background:var(--text);transition:.35s var(--ease)}
.nav-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* mobile drawer */
.drawer{
  position:fixed;inset:0;z-index:99;
  background:rgba(248,250,253,.96);
  backdrop-filter:blur(20px);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  opacity:0;visibility:hidden;transition:opacity .4s var(--ease),visibility .4s;
}
.drawer.open{opacity:1;visibility:visible}
.drawer a{font-family:var(--font-display);font-size:26px;font-weight:700;color:var(--text);padding:12px 0;letter-spacing:.1em;opacity:.85;transition:.3s}
.drawer a:hover{opacity:1;color:var(--accent)}
.drawer .btn{margin-top:20px}

/* ============ Hero ============ */
.hero{
  position:relative;
  min-height:100svh;
  display:flex;flex-direction:column;justify-content:center;
  padding:calc(var(--nav-h) + var(--topbar-h) + 48px) 0 40px;
  overflow:hidden;
}
.hero-grid{
  position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(85% 75% at 50% 40%,#000 20%,transparent 100%);
  -webkit-mask-image:radial-gradient(85% 75% at 50% 40%,#000 20%,transparent 100%);
}
.hero-glow{
  position:absolute;z-index:0;pointer-events:none;
  width:900px;height:900px;border-radius:50%;
  background:radial-gradient(circle,rgba(2,132,199,.1),transparent 60%);
  top:50%;left:50%;transform:translate(-50%,-55%);
  filter:blur(10px);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.overline{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.22em;color:var(--accent);
}
.overline::before{content:"";width:34px;height:1px;background:linear-gradient(90deg,var(--accent),transparent)}
.hero h1{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(44px,5.6vw,72px);
  line-height:1.14;
  letter-spacing:.01em;
  margin:22px 0 24px;
}
.hero h1 .grad{font-style:normal;
  background:linear-gradient(100deg,#0b1f3a 20%,var(--accent) 55%,var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;color:var(--text-2);max-width:520px;margin-bottom:36px}
.hero-legal{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
  color:var(--text-3);margin:0 0 26px;
}
.hero-legal svg{width:15px;height:15px;color:var(--accent);flex:none}
.hero-legal span{line-height:1.5}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:40px;
}
.hero-meta span{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;color:var(--text-3);
  border:1px solid var(--line);border-radius:999px;padding:7px 14px;
  background:rgba(255,255,255,.7);
}

/* hero visual */
.hero-visual{position:relative}
.hero-visual svg{width:100%;height:auto}
.sig-flow{stroke-dasharray:6 10;animation:dash 2.4s linear infinite}
@keyframes dash{to{stroke-dashoffset:-32}}
.led{animation:pulse 2s var(--ease) infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.ring-slow{transform-origin:300px 262px;animation:spin 46s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.float-chip{animation:float 7s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ============ Stats ============ */
.stats{
  position:relative;z-index:2;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--surface);
  box-shadow:0 24px 60px -36px rgba(23,52,102,.2);
  display:grid;grid-template-columns:repeat(4,1fr);
  margin:64px 0 0;
}
.stat{padding:30px 26px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat-num{
  font-family:var(--font-mono);font-weight:600;
  font-size:clamp(28px,3vw,38px);letter-spacing:-.02em;
  color:var(--text);
}
.stat-num em{font-style:normal;color:var(--accent);font-size:.72em}
.stat-label{font-size:13px;color:var(--text-3);margin-top:6px;letter-spacing:.06em}

/* ============ Section base ============ */
section{position:relative;padding:120px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:64px}
.section-title-sm{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.26em;color:var(--accent);
  display:flex;align-items:center;gap:10px;
}
.section-title-sm::before{content:"";width:26px;height:1px;background:var(--accent)}
.section-title{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(30px,3.4vw,44px);line-height:1.2;margin-top:14px;letter-spacing:.01em;
}
.section-desc{color:var(--text-2);max-width:460px;font-size:15px}
.section-link{
  font-size:14px;color:var(--text-2);display:inline-flex;align-items:center;gap:8px;
  border-bottom:1px solid var(--line-strong);padding-bottom:6px;white-space:nowrap;
  transition:color .3s,border-color .3s;
}
.section-link:hover{color:var(--accent);border-color:var(--accent)}
/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ Products ============ */
.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.p-card{
  position:relative;border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 30px 30px;background:var(--surface);
  box-shadow:0 12px 34px -22px rgba(23,52,102,.18);
  overflow:hidden;
  transition:transform .45s var(--ease),border-color .45s var(--ease),box-shadow .45s var(--ease);
}
.p-card::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(420px 200px at 50% -10%,var(--accent-dim),transparent 70%);
  opacity:0;transition:opacity .5s;
}
.p-card:hover{transform:translateY(-6px);border-color:rgba(2,132,199,.35);box-shadow:0 26px 60px -28px rgba(2,132,199,.2)}
.p-card:hover::before{opacity:1}
.p-card > *{position:relative;z-index:1}
.p-card .idx{
  position:absolute;top:22px;right:26px;
  font-family:var(--font-mono);font-size:12px;color:var(--text-3);letter-spacing:.1em;
}
.p-icon{
  width:52px;height:52px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--accent-dim);border:1px solid rgba(2,132,199,.25);
  margin-bottom:26px;color:var(--accent);
}
.p-icon img{width:100%;height:100%;object-fit:contain}
.p-card h3{font-family:var(--font-display);font-size:19px;font-weight:700;margin-bottom:10px}
.p-card p{font-size:14px;color:var(--text-2);min-height:3.6em}
.p-card .more{
  margin-top:18px;display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-3);transition:color .3s,gap .3s;
}
.p-card:hover .more{color:var(--accent);gap:12px}

/* ============ Solutions ============ */
.solutions{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sol-list{border-top:1px solid var(--line)}
.sol-row{
  display:grid;grid-template-columns:92px 1.2fr 1.6fr 120px;
  align-items:center;gap:32px;
  padding:34px 8px;border-bottom:1px solid var(--line);
  position:relative;transition:background .4s var(--ease);
}
.sol-row::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--accent),var(--accent-2));
  transform:scaleY(0);transform-origin:top;transition:transform .45s var(--ease);
}
.sol-row:hover{background:rgba(2,132,199,.035)}
.sol-row:hover::before{transform:scaleY(1)}
.sol-no{font-family:var(--font-mono);font-size:14px;color:var(--text-3);letter-spacing:.14em}
.sol-name{font-family:var(--font-display);font-size:21px;font-weight:700;display:flex;align-items:center;gap:12px}
.sol-name .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent);flex:none}
.sol-desc{font-size:14px;color:var(--text-2)}
.sol-tags{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}
.sol-tags span{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--text-3);border:1px solid var(--line);padding:5px 11px;border-radius:999px}

/* ============ R&D ============ */
.rnd-grid{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center}
.rnd-copy h2{margin-bottom:20px}
.rnd-copy>p{color:var(--text-2);margin-bottom:34px;max-width:520px}
.cap{display:flex;align-items:center;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}
.cap:last-child{border-bottom:0}
.cap .k{
  font-family:var(--font-mono);font-size:12px;color:var(--text-3);letter-spacing:.1em;
  width:132px;flex:none;
}
.cap .bar{flex:1;height:1px;background:var(--line);position:relative;overflow:hidden}
.cap .bar i{
  position:absolute;inset:0;width:0;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  transition:width 1.4s var(--ease);
}
.cap.in .bar i{width:var(--w)}
.cap .v{font-family:var(--font-mono);font-size:13px;color:var(--accent);width:118px;text-align:right;flex:none}
.cap .n{flex:1;font-size:14.5px;color:var(--text);font-weight:500}
.rnd-visual{
  position:relative;border:1px solid var(--line);border-radius:var(--radius);
  padding:40px 36px;background:
    radial-gradient(300px 240px at 20% 0%,rgba(2,132,199,.07),transparent 70%),
    var(--surface);
  overflow:hidden;
}
.rnd-visual .v-title{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;color:var(--text-3);
  display:flex;justify-content:space-between;margin-bottom:28px;
}
.rnd-visual .v-title b{color:var(--accent);font-weight:500}
.ring-wrap{position:relative;width:min(340px,100%);aspect-ratio:1;margin:0 auto}
.ring-wrap svg{width:100%;height:100%}
.ring-core{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  text-align:center;
}
.ring-core .big{font-family:var(--font-display);font-size:44px;font-weight:800;letter-spacing:-.02em}
.ring-core .big em{font-style:normal;color:var(--accent)}
.ring-core .sm{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--text-3);margin-top:2px}
.rnd-readout{
  display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:26px;
  border-top:1px solid var(--line);padding-top:22px;
}
.rnd-readout div{text-align:center}
.rnd-readout .v{font-family:var(--font-mono);font-size:15px;color:var(--text);font-weight:600}
.rnd-readout .l{font-size:11px;color:var(--text-3);letter-spacing:.1em;margin-top:2px}

/* ============ Tech marquee ============ */
.marquee{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:22px 0;overflow:hidden;background:rgba(255,255,255,.7);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
}
.marquee-track{display:flex;gap:64px;width:max-content;animation:scroll 32s linear infinite}
@keyframes scroll{to{transform:translateX(-50%)}}
.marquee span{
  font-family:var(--font-mono);font-size:13px;letter-spacing:.22em;color:var(--text-3);
  display:flex;align-items:center;gap:64px;white-space:nowrap;
}
.marquee span::after{content:"◦";color:var(--accent)}

/* ============ News ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.n-card{
  border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;background:var(--surface);box-shadow:0 12px 34px -22px rgba(23,52,102,.18);display:flex;flex-direction:column;gap:14px;
  transition:transform .45s var(--ease),border-color .45s var(--ease),box-shadow .45s var(--ease);
}
.n-card:hover{transform:translateY(-6px);border-color:rgba(2,132,199,.35);box-shadow:0 26px 60px -28px rgba(2,132,199,.18)}
.n-card .meta{display:flex;align-items:center;gap:12px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em}
.n-card .tag{color:var(--accent);border:1px solid rgba(2,132,199,.3);border-radius:999px;padding:3px 12px;background:var(--accent-dim)}
.n-card .date{color:var(--text-3)}
.n-card h3{font-size:17.5px;font-weight:600;line-height:1.5}
.n-card p{font-size:13.5px;color:var(--text-2)}
.n-card .arrow{margin-top:auto;color:var(--text-3);font-size:13px;display:inline-flex;align-items:center;gap:8px;transition:color .3s,gap .3s}
.n-card:hover .arrow{color:var(--accent);gap:12px}

/* ============ CTA ============ */
.cta{
  padding:140px 0;text-align:center;overflow:hidden;
}
.cta::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 300px at 50% 50%,rgba(2,132,199,.08),transparent 70%);
}
.cta h2{
  font-family:var(--font-display);font-weight:800;font-size:clamp(32px,4.4vw,56px);
  line-height:1.2;margin-bottom:20px;position:relative;
}
.cta h2 .grad{font-style:normal;
  background:linear-gradient(100deg,#0b1f3a 20%,var(--accent) 60%,var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.cta p{color:var(--text-2);max-width:520px;margin:0 auto 40px;position:relative}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;position:relative}
.cta-phone{
  margin-top:34px;font-family:var(--font-mono);font-size:13px;letter-spacing:.16em;color:var(--text-3);
  display:inline-flex;align-items:center;gap:10px;
}
.cta-phone b{color:var(--text);font-weight:600;font-size:15px}

/* ============ Footer ============ */
footer{border-top:1px solid var(--line);background:var(--bg-2);padding:70px 0 36px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:48px;margin-bottom:56px}
.foot-brand p{color:var(--text-2);font-size:14px;margin-top:18px;max-width:300px}
.foot-legal{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--text);font-weight:600;margin-top:16px;
}
.foot-col h4{font-size:13px;letter-spacing:.18em;color:var(--text-3);margin-bottom:20px;font-family:var(--font-mono)}
.foot-col ul{display:flex;flex-direction:column;gap:12px}
.foot-col a{font-size:14px;color:var(--text-2);transition:color .3s,padding-left .3s}
.foot-col a:hover{color:var(--accent);padding-left:4px}
.foot-contact li{font-size:14px;color:var(--text-2);display:flex;gap:10px;align-items:baseline}
.foot-contact .lab{font-family:var(--font-mono);font-size:11px;color:var(--text-3);letter-spacing:.14em;flex:none}
.foot-bottom{
  border-top:1px solid var(--line);padding-top:26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--text-3);
}

/* ============ Responsive ============ */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:48px}
  .hero-visual{max-width:520px}
  .products-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .sol-row{grid-template-columns:64px 1fr 1.4fr;grid-template-areas:"no name tags" "no desc desc"}
  .sol-no{grid-area:no;align-self:start;margin-top:6px}
  .sol-name{grid-area:name}
  .sol-desc{grid-area:desc;grid-column:2/4}
  .sol-tags{grid-area:tags}
  .rnd-grid{grid-template-columns:1fr;gap:56px}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .nav-links,.nav-cta .btn{display:none}
  .nav-burger{display:flex}
  .container{width:calc(100% - 40px)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat{border-top:1px solid var(--line);border-left:0}
  .stat:nth-child(-n+2){border-top:0}
  .stat:nth-child(even){border-left:1px solid var(--line)}
  .stat:nth-child(odd){border-left:0}
  section{padding:88px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:44px}
  .products-grid,.news-grid{grid-template-columns:1fr}
  .sol-row{grid-template-columns:1fr;grid-template-areas:"no" "name" "desc" "tags";gap:10px}
  .sol-desc{grid-column:auto}
  .sol-tags{justify-content:flex-start}
  .cap{flex-wrap:wrap;gap:10px}
  .cap .k{width:auto}
  .cap .bar{flex-basis:100%;order:5}
  .cap .v{width:auto}
  .foot-grid{grid-template-columns:1fr}
  .hero{padding-top:calc(var(--nav-h) + var(--topbar-h) + 24px)}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001s !important;animation-iteration-count:1 !important;transition-duration:.001s !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ============ Product page ============ */
.nav-links a.active{color:var(--text)}
.nav-links a.active::after{right:0}

.page-hero{
  position:relative;
  padding:calc(var(--nav-h) + var(--topbar-h) + 52px) 0 72px;
  overflow:hidden;
}
.page-hero .hero-grid{
  position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(85% 75% at 50% 30%,#000 20%,transparent 100%);
  -webkit-mask-image:radial-gradient(85% 75% at 50% 30%,#000 20%,transparent 100%);
}
.page-hero .hero-glow{
  position:absolute;z-index:0;pointer-events:none;
  width:760px;height:760px;border-radius:50%;
  background:radial-gradient(circle,rgba(2,132,199,.1),transparent 60%);
  top:0;left:50%;transform:translateX(-50%);
  filter:blur(10px);
}
.crumb{
  position:relative;z-index:2;display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--text-3);
  margin-bottom:26px;
}
.crumb a{color:var(--text-2);transition:color .3s}
.crumb a:hover{color:var(--accent)}
.crumb .sep{opacity:.6}
.page-hero h1{
  position:relative;z-index:2;
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(38px,4.8vw,60px);line-height:1.15;letter-spacing:.01em;
}
.page-hero h1 .grad{
  font-style:normal;
  background:linear-gradient(100deg,#0b1f3a 20%,var(--accent) 55%,var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero .lead{
  position:relative;z-index:2;
  font-size:16px;color:var(--text-2);max-width:560px;margin-top:20px;
}
.page-hero .lead b{color:var(--text);font-weight:600}

/* filter */
.filter{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:10px;margin:44px 0 36px}
.filter button{
  font-family:var(--font-sans);font-size:14px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.7);
  border-radius:999px;padding:9px 20px;cursor:pointer;
  transition:color .3s var(--ease),border-color .3s var(--ease),background .3s var(--ease),transform .3s var(--ease);
}
.filter button:hover{color:var(--text);border-color:var(--line-strong);transform:translateY(-1px)}
.filter button.on{
  color:#fff;border-color:transparent;
  background:linear-gradient(120deg,var(--accent),var(--accent-2));
  box-shadow:0 8px 24px -10px rgba(2,132,199,.45);
}

/* product cards */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.prod-card{
  position:relative;border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 30px 28px;
  background:var(--surface);
  box-shadow:0 12px 34px -22px rgba(23,52,102,.18);
  overflow:hidden;
  transition:transform .45s var(--ease),border-color .45s var(--ease),box-shadow .45s var(--ease);
}
.prod-card::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(420px 200px at 50% -10%,var(--accent-dim),transparent 70%);
  opacity:0;transition:opacity .5s;
}
.prod-card:hover{transform:translateY(-6px);border-color:rgba(2,132,199,.35);box-shadow:0 26px 60px -28px rgba(2,132,199,.2)}
.prod-card:hover::before{opacity:1}
.prod-card > *{position:relative;z-index:1}
.prod-card .idx{
  position:absolute;top:22px;right:26px;z-index:1;
  font-family:var(--font-mono);font-size:12px;color:var(--text-3);letter-spacing:.1em;
}
.prod-card .series{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--accent);
  margin-bottom:6px;
}
.prod-card h3{font-family:var(--font-display);font-size:19px;font-weight:700;margin-bottom:8px}
.prod-card .sub{font-size:13px;color:var(--text-3);margin-bottom:18px}
.specs{
  list-style:none;display:flex;flex-direction:column;gap:10px;
  padding:16px 0 0;margin:0 0 18px;border-top:1px solid var(--line);
}
.specs li{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-size:13px}
.specs li b{font-family:var(--font-mono);font-weight:500;font-size:11.5px;letter-spacing:.06em;color:var(--text-3)}
.specs li span{font-family:var(--font-mono);font-size:12.5px;color:var(--text);white-space:nowrap}
.prod-card .tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.prod-card .tags span{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.06em;color:var(--text-3);
  border:1px solid var(--line);padding:4px 10px;border-radius:999px;
}
.prod-card .more{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-3);transition:color .3s,gap .3s;
}
.prod-card:hover .more{color:var(--accent);gap:12px}
.prod-card.hide{display:none}
.prod-card.entering{animation:fadeUp .5s var(--ease)}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

/* specs table */
.spec-wrap{position:relative;z-index:2;margin-top:96px}
.table-scroll{overflow-x:auto}
.spec-table{width:100%;border-collapse:collapse;font-size:13.5px;min-width:760px}
.spec-table th{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;color:var(--text-3);
  font-weight:500;text-align:left;padding:16px 18px;border-bottom:1px solid var(--line-strong);
  white-space:nowrap;
}
.spec-table td{padding:17px 18px;border-bottom:1px solid var(--line);color:var(--text-2)}
.spec-table td:first-child{font-family:var(--font-mono);color:var(--accent);font-size:13px;white-space:nowrap}
.spec-table td b{color:var(--text);font-family:var(--font-mono);font-weight:500}
.spec-table tr:last-child td{border-bottom:0}
.spec-table tr:hover td{background:rgba(2,132,199,.035)}
.spec-note{margin-top:14px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--text-3)}

@media (max-width:1024px){
  .prod-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .prod-grid{grid-template-columns:1fr}
  .page-hero{padding-top:calc(var(--nav-h) + var(--topbar-h) + 28px)}
  .filter{margin:32px 0 28px}
  .spec-wrap{margin-top:72px}
}

/* ============ Light theme & tech interactions ============ */
/* scroll progress */
#progress{
  position:fixed;top:0;left:0;z-index:300;height:2px;width:0;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  box-shadow:0 0 14px rgba(2,132,199,.55);
  pointer-events:none;
}
/* hero scan line */
.hero-scan{
  position:absolute;left:0;right:0;height:150px;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(2,132,199,.06),transparent);
  animation:scan 7.5s linear infinite;
}
@keyframes scan{0%{top:-20%}100%{top:120%}}
/* button shimmer */
.btn-primary::after{
  content:"";position:absolute;top:0;left:-130%;width:60%;height:100%;
  background:linear-gradient(120deg,transparent,rgba(255,255,255,.55),transparent);
  transform:skewX(-20deg);transition:left .55s var(--ease);
}
.btn-primary:hover::after{left:135%}
/* card cursor spotlight */
.p-card::after,.prod-card::after,.n-card::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(280px 150px at var(--mx,50%) var(--my,0%),rgba(2,132,199,.09),transparent 70%);
  opacity:0;transition:opacity .45s var(--ease);
}
.p-card:hover::after,.prod-card:hover::after,.n-card:hover::after{opacity:1}
.n-card{overflow:hidden}
/* product card 3D tilt */
.prod-card{transform-style:preserve-3d}
.prod-card:hover{
  transform:translateY(-6px) perspective(900px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));
}
.prod-card:hover .p-icon{transform:translateZ(18px)}
.p-card .p-icon,.prod-card .p-icon,.n-card{will-change:transform}
/* filter active pop */
.filter button.on{transform:translateY(-1px) scale(1.03)}
/* reveal with slight scale for depth */
.reveal{transform:translateY(24px) scale(.99)}
.reveal.in{transform:none}
/* stat numbers hud tick */
.stat-num span{display:inline-block}
@media (max-width:768px){
  .hero-scan{height:90px}
}

/* ============ Cooler light + theme system ============ */
:root{
  color-scheme:light;
  --hole-nav:#f1f6fd;
  --hole-foot:#e7eefb;
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#050c1a;
  --bg-2:#0a1528;
  --surface:#0d1a30;
  --surface-2:#11203a;
  --line:rgba(122,162,222,.14);
  --line-strong:rgba(122,162,222,.24);
  --text:#e6eefb;
  --text-2:#93a7c4;
  --text-3:#5f7496;
  --accent:#38bdf8;
  --accent-2:#22d3ee;
  --accent-dim:rgba(56,189,248,.12);
  --hole-nav:#050c1a;
  --hole-foot:#0a1528;
}
.logo-mark .crescent{fill:var(--hole-nav)}
.logo-foot .crescent{fill:var(--hole-foot)}

/* dark overrides */
:root[data-theme="dark"] ::selection{background:rgba(56,189,248,.3);color:#fff}
:root[data-theme="dark"] .nav.scrolled{background:rgba(5,12,26,.78)}
:root[data-theme="dark"] .drawer{background:rgba(5,12,26,.96)}
:root[data-theme="dark"] .btn-ghost{background:rgba(255,255,255,.03)}
:root[data-theme="dark"] .hero-meta span{background:rgba(255,255,255,.02)}
:root[data-theme="dark"] .stats{box-shadow:0 24px 60px -36px rgba(0,0,0,.5)}
:root[data-theme="dark"] .p-card{box-shadow:0 12px 34px -22px rgba(0,0,0,.45)}
:root[data-theme="dark"] .prod-card{box-shadow:0 12px 34px -22px rgba(0,0,0,.45)}
:root[data-theme="dark"] .n-card{box-shadow:0 12px 34px -22px rgba(0,0,0,.45)}
:root[data-theme="dark"] .marquee{background:rgba(255,255,255,.02)}
:root[data-theme="dark"] .filter button{background:rgba(255,255,255,.02)}
:root[data-theme="dark"] .hero h1 .grad{background-image:linear-gradient(100deg,#fff 20%,var(--accent) 55%,var(--accent-2))}
:root[data-theme="dark"] .page-hero h1 .grad{background-image:linear-gradient(100deg,#fff 20%,var(--accent) 55%,var(--accent-2))}
:root[data-theme="dark"] .cta h2 .grad{background-image:linear-gradient(100deg,#fff 20%,var(--accent) 60%,var(--accent-2))}
:root[data-theme="dark"] .sol-row:hover{background:rgba(56,189,248,.05)}
:root[data-theme="dark"] .spec-table tr:hover td{background:rgba(56,189,248,.05)}
:root[data-theme="dark"] .bg-noise{background-image:radial-gradient(rgba(122,162,222,.05) 1px,transparent 1px)}
:root[data-theme="dark"] .hero-glow{background:radial-gradient(circle,rgba(56,189,248,.12),transparent 60%)}
:root[data-theme="dark"] .page-hero .hero-glow{background:radial-gradient(circle,rgba(56,189,248,.12),transparent 60%)}
:root[data-theme="dark"] .hero-scan{background:linear-gradient(180deg,transparent,rgba(56,189,248,.09),transparent)}
:root[data-theme="dark"] .cap .bar{background:rgba(122,162,222,.18)}
:root[data-theme="dark"] #progress{box-shadow:0 0 14px rgba(56,189,248,.55)}
:root[data-theme="dark"] .p-card::after,
:root[data-theme="dark"] .prod-card::after,
:root[data-theme="dark"] .n-card::after{background:radial-gradient(280px 150px at var(--mx,50%) var(--my,0%),rgba(56,189,248,.1),transparent 70%)}

/* theme toggle */
.theme-toggle{
  width:40px;height:40px;flex:none;border-radius:10px;border:1px solid var(--line-strong);
  background:rgba(255,255,255,.6);color:var(--text);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:transform .3s var(--ease),background-color .3s var(--ease),border-color .3s var(--ease),color .3s var(--ease);
}
.theme-toggle:hover{transform:translateY(-1px);border-color:rgba(2,132,199,.45);color:var(--accent)}
:root[data-theme="dark"] .theme-toggle{background:rgba(255,255,255,.03)}
.theme-toggle svg{width:18px;height:18px}
.theme-toggle .i-sun{display:none}
:root[data-theme="dark"] .theme-toggle .i-sun{display:block}
:root[data-theme="dark"] .theme-toggle .i-moon{display:none}

/* hero particles canvas */
.hero-canvas{position:absolute;inset:0;z-index:1;pointer-events:none}

/* site-wide tech background layers */
.fx{position:relative;overflow:hidden}
.fx > .container{position:relative;z-index:2}
.fx-navpad{padding-top:calc(var(--nav-h) + var(--topbar-h) + 40px)}
.fx-grid{
  position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(85% 75% at 50% 40%,#000 20%,transparent 100%);
  -webkit-mask-image:radial-gradient(85% 75% at 50% 40%,#000 20%,transparent 100%);
}
.fx-glow{
  position:absolute;z-index:0;pointer-events:none;
  width:820px;height:820px;border-radius:50%;
  background:radial-gradient(circle,rgba(2,132,199,.07),transparent 60%);
  top:50%;left:50%;transform:translate(-50%,-55%);
  filter:blur(10px);
}
.fx-scan{
  position:absolute;left:0;right:0;height:150px;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(2,132,199,.05),transparent);
  animation:scan 7.5s linear infinite;
}
.fx-canvas{position:absolute;inset:0;z-index:1;pointer-events:none}
:root[data-theme="dark"] .fx-glow{background:radial-gradient(circle,rgba(56,189,248,.1),transparent 60%)}
:root[data-theme="dark"] .fx-scan{background:linear-gradient(180deg,transparent,rgba(56,189,248,.08),transparent)}
@media (max-width:768px){.fx-scan{height:90px}}

/* smooth theme switch */
body{transition:background-color .4s var(--ease),color .4s var(--ease)}
.nav{transition:background .4s var(--ease),border-color .4s var(--ease),backdrop-filter .4s}
.drawer{transition:opacity .4s var(--ease),visibility .4s,background-color .4s var(--ease)}
.stats,.solutions,.marquee,.hero-meta span,.btn-ghost,.rnd-visual,footer,.theme-toggle{transition:background-color .4s var(--ease),border-color .4s var(--ease),color .4s var(--ease)}
.filter button{transition:color .3s var(--ease),border-color .3s var(--ease),background .3s var(--ease),transform .3s var(--ease)}
.p-card,.prod-card,.n-card{transition:transform .45s var(--ease),border-color .45s var(--ease),box-shadow .45s var(--ease),background-color .45s var(--ease)}

@media (max-width:768px){.theme-toggle{width:38px;height:38px}}

/* ============ Reference-inspired: topbar / search / trust ============ */
:root{--topbar-h:38px}
.nav{display:block;height:auto}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between}
.topbar{
  height:var(--topbar-h);
  border-bottom:1px solid transparent;
  background:rgba(255,255,255,.55);
  transition:background-color .3s var(--ease),border-color .3s var(--ease);
}
.topbar-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--text-3)}
.topbar-links{display:flex;align-items:center;gap:22px}
.topbar-links a{color:var(--text-3);transition:color .3s;display:inline-flex;align-items:center;gap:8px}
.topbar-links a:hover{color:var(--accent)}
.topbar-links svg{width:13px;height:13px}
.topbar-tag{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav.scrolled .topbar{border-bottom-color:var(--line)}
:root[data-theme="dark"] .topbar{background:rgba(5,12,26,.55)}
:root[data-theme="dark"] .topbar-links a:hover{color:var(--accent)}

/* hero search */
.hero-search{
  position:relative;z-index:3;display:flex;align-items:center;gap:8px;
  max-width:560px;margin:0 0 18px;
  border:1px solid var(--line-strong);border-radius:12px;
  background:var(--surface);padding:6px 6px 6px 18px;
  box-shadow:0 14px 40px -24px rgba(23,52,102,.35);
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.hero-search:focus-within{border-color:rgba(2,132,199,.55);box-shadow:0 0 0 3px rgba(2,132,199,.12),0 14px 40px -24px rgba(23,52,102,.35)}
.hero-search svg{width:16px;height:16px;color:var(--text-3);flex:none}
.hero-search input{
  flex:1;border:0;outline:0;background:transparent;color:var(--text);
  font-family:var(--font-sans);font-size:15px;min-width:0;
}
.hero-search input::placeholder{color:var(--text-3)}
.hero-search button{
  flex:none;display:inline-flex;align-items:center;gap:8px;
  border:0;border-radius:9px;padding:11px 18px;cursor:pointer;
  color:#fff;background:linear-gradient(120deg,var(--accent),var(--accent-2));
  font-family:var(--font-sans);font-size:14px;font-weight:600;
  box-shadow:0 8px 22px -10px rgba(2,132,199,.55);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.hero-search button:hover{transform:translateY(-1px);box-shadow:0 12px 26px -10px rgba(2,132,199,.6)}
.hero-popular{
  position:relative;z-index:3;display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:26px;
}
.hero-popular b{font-weight:600;color:var(--text-2);font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em}
.hero-popular a{
  font-family:var(--font-mono);font-size:12px;color:var(--text-2);
  border:1px solid var(--line);border-radius:999px;padding:4px 12px;
  background:rgba(255,255,255,.55);transition:color .3s,border-color .3s,transform .3s var(--ease);
}
.hero-popular a:hover{color:var(--accent);border-color:rgba(2,132,199,.4);transform:translateY(-1px)}
.hero-trust{
  position:relative;z-index:3;display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:28px;
}
.hero-trust span{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);
}
.hero-trust svg{width:15px;height:15px;color:var(--ok);flex:none}
:root[data-theme="dark"] .hero-search{background:rgba(255,255,255,.03);box-shadow:0 14px 40px -24px rgba(0,0,0,.6)}
:root[data-theme="dark"] .hero-popular a{background:rgba(255,255,255,.03)}

/* stats with icons */
.stat{display:flex;flex-direction:column;gap:6px}
.stat-icon{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--accent);background:var(--accent-dim);border:1px solid rgba(2,132,199,.22);margin-bottom:10px}
.stat-icon svg{width:19px;height:19px}
:root[data-theme="dark"] .stat-icon{border-color:rgba(56,189,248,.28)}

/* eco / partners strip */
.eco-strip{
  position:relative;z-index:2;margin-top:44px;
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  padding:20px 0;border-top:1px solid var(--line);
}
.eco-strip .lab{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.18em;color:var(--text-3);margin-right:6px}
.eco-strip span{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--text-2);
  border:1px solid var(--line);border-radius:999px;padding:6px 14px;background:rgba(255,255,255,.55);
  transition:color .3s,border-color .3s;
}
.eco-strip span:hover{color:var(--accent);border-color:rgba(2,132,199,.35)}
:root[data-theme="dark"] .eco-strip span{background:rgba(255,255,255,.03)}

/* USP */
.usp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.usp-card{
  position:relative;border:1px solid var(--line);border-radius:var(--radius);
  padding:32px 28px;background:var(--surface);box-shadow:0 12px 34px -22px rgba(23,52,102,.18);
  overflow:hidden;transition:transform .45s var(--ease),border-color .45s var(--ease),box-shadow .45s var(--ease),background-color .45s var(--ease);
}
.usp-card::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(280px 150px at var(--mx,50%) var(--my,0%),rgba(2,132,199,.09),transparent 70%);
  opacity:0;transition:opacity .45s var(--ease);
}
.usp-card:hover::after{opacity:1}
.usp-card:hover{transform:translateY(-6px);border-color:rgba(2,132,199,.35);box-shadow:0 26px 60px -28px rgba(2,132,199,.2)}
.usp-card > *{position:relative;z-index:1}
.usp-card .no{position:absolute;top:24px;right:26px;font-family:var(--font-mono);font-size:12px;color:var(--text-3);letter-spacing:.1em;z-index:1}
.usp-card h3{font-family:var(--font-display);font-size:18px;font-weight:700;margin:20px 0 10px}
.usp-card p{font-size:13.5px;color:var(--text-2)}
:root[data-theme="dark"] .usp-card{box-shadow:0 12px 34px -22px rgba(0,0,0,.45)}
:root[data-theme="dark"] .usp-card::after{background:radial-gradient(280px 150px at var(--mx,50%) var(--my,0%),rgba(56,189,248,.1),transparent 70%)}

/* testimonials */
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.t-card{
  position:relative;border:1px solid var(--line);border-radius:var(--radius);
  padding:32px 30px;background:var(--surface);box-shadow:0 12px 34px -22px rgba(23,52,102,.18);
  display:flex;flex-direction:column;gap:16px;
  transition:transform .45s var(--ease),border-color .45s var(--ease),box-shadow .45s var(--ease),background-color .45s var(--ease);
}
.t-card:hover{transform:translateY(-6px);border-color:rgba(2,132,199,.35);box-shadow:0 26px 60px -28px rgba(2,132,199,.18)}
.t-stars{display:flex;gap:3px;color:#fbbf24}
.t-stars svg{width:14px;height:14px}
.t-quote{font-size:14.5px;color:var(--text-2);line-height:1.8}
.t-quote::before{content:"“";color:var(--accent);font-size:22px;font-weight:700;margin-right:2px}
.t-quote::after{content:"”";color:var(--accent);font-size:22px;font-weight:700;margin-left:2px}
.t-author{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}
.t-avatar{width:40px;height:40px;flex:none;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:700;font-size:15px;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-2))}
.t-author b{display:block;font-size:14px;font-weight:600;color:var(--text)}
.t-author span{font-size:12px;color:var(--text-3)}
:root[data-theme="dark"] .t-card{box-shadow:0 12px 34px -22px rgba(0,0,0,.45)}

/* contact / inquiry section */
.contact-section{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:64px;align-items:start}
.contact-info h2{margin-bottom:20px}
.contact-info>p{color:var(--text-2);max-width:440px;margin-bottom:34px}
.c-list{display:flex;flex-direction:column;gap:0}
.c-item{display:flex;align-items:flex-start;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.c-item:first-child{border-top:1px solid var(--line)}
.c-icon{width:42px;height:42px;flex:none;border-radius:11px;display:flex;align-items:center;justify-content:center;color:var(--accent);background:var(--accent-dim);border:1px solid rgba(2,132,199,.22)}
.c-icon svg{width:19px;height:19px}
.c-item b{display:block;font-size:13px;color:var(--text-3);font-weight:500;margin-bottom:3px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em}
.c-item span{font-size:15px;color:var(--text)}
.c-form{
  border:1px solid var(--line);border-radius:var(--radius);padding:36px;
  background:var(--surface);box-shadow:0 24px 60px -36px rgba(23,52,102,.25);
  transition:background-color .4s var(--ease);
}
.c-form h3{font-family:var(--font-display);font-size:20px;font-weight:700;margin-bottom:6px}
.c-form .fhint{font-size:13px;color:var(--text-3);margin-bottom:24px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-field{display:flex;flex-direction:column;gap:7px}
.form-field.full{grid-column:1/-1}
.form-field label{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--text-3)}
.form-field input,.form-field select,.form-field textarea{
  border:1px solid var(--line);border-radius:9px;background:var(--bg);
  color:var(--text);font-family:var(--font-sans);font-size:14px;padding:12px 14px;outline:0;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),background-color .4s var(--ease);
}
.form-field textarea{resize:vertical;min-height:96px}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  border-color:rgba(2,132,199,.55);box-shadow:0 0 0 3px rgba(2,132,199,.1);
}
.c-form .btn{width:100%;justify-content:center;margin-top:16px}
.form-ok{
  display:none;margin-top:14px;padding:12px 14px;border-radius:9px;
  background:rgba(52,211,153,.1);border:1px solid rgba(52,211,153,.35);color:#0d7a55;
  font-size:13.5px;text-align:center;
}
.form-ok.show{display:block}
:root[data-theme="dark"] .contact-section{background:var(--bg-2)}
:root[data-theme="dark"] .c-form{box-shadow:0 24px 60px -36px rgba(0,0,0,.5)}
:root[data-theme="dark"] .form-field input,:root[data-theme="dark"] .form-field select,:root[data-theme="dark"] .form-field textarea{background:rgba(255,255,255,.03)}
:root[data-theme="dark"] .form-ok{color:#34d399}

@media (max-width:1024px){
  .usp-grid{grid-template-columns:repeat(2,1fr)}
  .testi-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr;gap:44px}
}
@media (max-width:768px){
  .topbar-tag{display:none}
  .topbar-links{gap:14px}
  .usp-grid,.testi-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .c-form{padding:26px 20px}
  .hero-search{flex-wrap:wrap}
  .hero-search button{width:100%;justify-content:center}
}

/* products page search */
.p-search-wrap{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:18px;margin:0 0 30px}
.p-search{
  display:flex;align-items:center;gap:10px;flex:1;max-width:520px;
  border:1px solid var(--line-strong);border-radius:11px;background:var(--surface);
  padding:0 6px 0 16px;box-shadow:0 12px 34px -24px rgba(23,52,102,.3);
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),background-color .4s var(--ease);
}
.p-search:focus-within{border-color:rgba(2,132,199,.55);box-shadow:0 0 0 3px rgba(2,132,199,.12)}
.p-search svg{width:15px;height:15px;color:var(--text-3);flex:none}
.p-search input{flex:1;border:0;outline:0;background:transparent;color:var(--text);font-family:var(--font-sans);font-size:14px;padding:12px 0;min-width:0}
.p-search input::placeholder{color:var(--text-3)}
.p-search button{border:0;background:none;color:var(--text-3);cursor:pointer;width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;transition:color .3s}
.p-search button:hover{color:var(--accent)}
.p-count{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--text-3);white-space:nowrap}
:root[data-theme="dark"] .p-search{background:rgba(255,255,255,.03);box-shadow:0 12px 34px -24px rgba(0,0,0,.5)}
@media (max-width:768px){
  .p-search-wrap{flex-direction:column;align-items:stretch;gap:10px}
}

/* ============ ZZSL additions ============ */
.hero-visual{position:relative;z-index:2}
.carousel{position:relative;aspect-ratio:4/3;border-radius:20px;overflow:hidden;border:1px solid var(--line-strong);box-shadow:0 30px 70px -42px rgba(23,52,102,.5);background:var(--surface)}
.car-slide{position:absolute;inset:0;opacity:0;transition:opacity .9s var(--ease)}
.car-slide.active{opacity:1}
.car-slide img{width:100%;height:100%;object-fit:cover;display:block}
.car-caption{position:absolute;left:18px;bottom:18px;z-index:2;display:flex;flex-direction:column;gap:5px;background:transparent;color:var(--text);padding:0;border-radius:0;border:0;max-width:calc(100% - 36px);text-shadow:0 1px 14px rgba(255,255,255,.5)}
.car-caption .cc-line{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;opacity:.92}
.car-caption .cc-line svg{width:15px;height:15px}
.car-caption b{font-size:15.5px;font-weight:700;letter-spacing:.01em}
.car-dots{position:absolute;right:20px;bottom:22px;z-index:3;display:flex;gap:8px}
.car-dots .dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.45);cursor:pointer;transition:.3s}
.car-dots .dot.active{background:#fff;width:22px;border-radius:6px}

.eco-strip.brands{gap:12px}
.eco-strip.brands a{display:inline-flex;align-items:center;justify-content:center;width:58px;height:40px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:6px 9px;box-shadow:0 6px 16px -12px rgba(23,52,102,.35);transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
.eco-strip.brands img{width:100%;height:100%;object-fit:contain}
.eco-strip.brands a:hover{transform:translateY(-3px);border-color:rgba(2,132,199,.4);box-shadow:0 12px 22px -14px rgba(23,52,102,.4)}

.stats{grid-template-columns:repeat(5,1fr)}
@media (max-width:1120px){.stats{grid-template-columns:repeat(3,1fr)}}
@media (max-width:640px){.stats{grid-template-columns:repeat(2,1fr)}}

.cert-strip{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;margin:26px 0 0;padding:20px 26px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-2)}
.cert-item{display:inline-flex;align-items:center;gap:10px;font-size:13.5px;font-weight:600;color:var(--text-2)}
.cert-item svg{width:19px;height:19px;color:var(--accent);flex:none}
.cert-item span{white-space:nowrap}

.mfg-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:44px}
.mfg-card{display:flex;flex-direction:column;align-items:center;gap:3px;text-align:center;border:1px solid var(--line);border-radius:var(--radius);padding:26px 18px 22px;background:var(--surface);box-shadow:0 12px 34px -24px rgba(23,52,102,.28);transition:transform .4s var(--ease),border-color .4s var(--ease),box-shadow .4s var(--ease)}
.mfg-card img{width:84px;height:84px;object-fit:contain;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;margin-bottom:12px;transition:transform .4s var(--ease)}
.mfg-card h3{font-family:var(--font-display);font-size:16px;font-weight:700}
.mfg-card p{font-size:12.5px;color:var(--text-3);line-height:1.55}
.mfg-card:hover{transform:translateY(-4px);border-color:rgba(2,132,199,.38);box-shadow:0 20px 44px -28px rgba(23,52,102,.4)}
.mfg-card:hover img{transform:scale(1.06)}
@media (max-width:1024px){.mfg-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:640px){.mfg-grid{grid-template-columns:repeat(2,1fr)}}

.p-card .series{display:inline-block;margin-bottom:10px;padding:4px 10px;border-radius:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--accent);background:var(--accent-dim);border:1px solid rgba(2,132,199,.22)}
.p-card h3.mono{font-family:var(--font-mono);font-size:15px;letter-spacing:.01em;overflow-wrap:anywhere}
.p-card a.more:hover,.prod-card a.more:hover{color:var(--accent);gap:10px}

.contact-info .trust-line{margin:14px 0 26px;font-size:13.5px;color:var(--text-2);line-height:1.95}

.wa-float{position:fixed;right:22px;bottom:22px;z-index:120;width:56px;height:56px;border-radius:50%;background:#25d366;color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 14px 34px -10px rgba(37,211,102,.55);transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.wa-float svg{width:30px;height:30px}
.wa-float:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 18px 40px -12px rgba(37,211,102,.6)}
.wa-float .wa-tip{position:absolute;right:calc(100% + 12px);top:50%;transform:translateY(-50%) translateX(6px);background:var(--surface);color:var(--text);border:1px solid var(--line-strong);padding:8px 14px;border-radius:10px;font-size:13px;white-space:nowrap;opacity:0;visibility:hidden;transition:.3s var(--ease);box-shadow:0 10px 26px -16px rgba(23,52,102,.4)}
.wa-float:hover .wa-tip{opacity:1;visibility:visible;transform:translateY(-50%) translateX(0)}

:root[data-theme="dark"] .carousel{box-shadow:0 30px 70px -42px rgba(0,0,0,.6)}
:root[data-theme="dark"] .car-caption{color:#fff;text-shadow:0 1px 14px rgba(0,0,0,.65)}
:root[data-theme="dark"] .eco-strip.brands a{background:#fff}
:root[data-theme="dark"] .cert-strip{background:var(--surface)}
:root[data-theme="dark"] .mfg-card{box-shadow:0 12px 34px -22px rgba(0,0,0,.45)}
:root[data-theme="dark"] .wa-tip{background:var(--surface)}
/* usp icon (matches p-icon language) */
.usp-icon{width:50px;height:50px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:var(--accent-dim);border:1px solid rgba(2,132,199,.25);color:var(--accent);margin-bottom:6px}
.usp-icon svg{width:22px;height:22px}
/* ============ Layout polish ============ */
.logo-chip{width:38px;height:38px;flex:none;border-radius:10px;overflow:hidden;background:#fff;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;padding:3px;box-shadow:0 4px 12px -8px rgba(23,52,102,.4)}
.logo-chip img{width:100%;height:100%;object-fit:contain;display:block}
.hero h1{font-size:clamp(32px,3.6vw,46px);line-height:1.2;letter-spacing:-.01em;text-wrap:balance;margin:20px 0 20px}
@media (min-width:1025px){.hero-inner{grid-template-columns:1.15fr .85fr;gap:52px}}
.hero-sub{font-size:16px;max-width:520px}
.section-title{text-wrap:balance}
.page-hero h1{text-wrap:balance}
.carousel{aspect-ratio:3/2}
:root[data-theme="dark"] .logo-chip{box-shadow:0 4px 12px -8px rgba(0,0,0,.6)}
@media (max-width:640px){
  .topbar-links{gap:12px}
  .topbar-links a:last-of-type{display:none}
  .cert-strip{justify-content:flex-start;gap:10px 18px;padding:16px 18px}
  .hero-popular{gap:6px}
  .hero h1{font-size:clamp(24px,6.8vw,28px)}
}
.hot-grid{grid-template-columns:repeat(3,1fr)}
.logo:hover .logo-chip{transform:translateY(-1px);border-color:rgba(2,132,199,.4)}
.logo-chip{transition:transform .3s var(--ease),border-color .3s var(--ease)}
@media (max-width:1024px){.hot-grid{grid-template-columns:repeat(2,1fr)}}
/* ============ Topbar prominence & single-line ============ */
.topbar-inner{font-size:13px;letter-spacing:.04em;color:var(--text-2);font-weight:600}
.topbar-links{flex-shrink:0;gap:20px}
.topbar-links a,.topbar-links span{display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.topbar-links svg{width:14px;height:14px;flex:none}
.topbar-tag{min-width:0;font-weight:600;color:var(--text-2)}
.topbar-links a:hover{color:var(--accent)}
@media (max-width:900px){
  .topbar-tag{display:none}
  .topbar-links{gap:16px}
}
@media (max-width:640px){
  .topbar-inner{font-size:11.5px}
  .topbar-links{gap:12px}
  .topbar-links a:last-of-type{display:none}
}
/* ============ DCS 站扩展样式（夜歌工控风格适配） ============ */

/* hero mini */
.hero-mini{min-height:auto;padding:calc(var(--nav-h) + var(--topbar-h) + 56px) 0 76px}
.hero-mini .hero-inner{grid-template-columns:1fr}
.hero-mini h1{font-size:clamp(30px,4vw,52px);margin:16px 0 18px}
.hero-mini .hero-sub{margin-bottom:26px}
.hero-mini .hero-search{max-width:560px}

/* crumbs */
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:26px}
.crumbs a{color:var(--text-2);transition:color .3s}
.crumbs a:hover{color:var(--accent)}
.crumbs span{color:var(--line-strong)}
.crumbs em{font-style:normal;color:var(--text);font-family:var(--font-mono);font-size:12.5px}

/* brand chips */
.brand-chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.brand-chips a{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--text-2);
  border:1px solid var(--line-strong);border-radius:999px;padding:8px 16px;background:var(--surface);
  box-shadow:0 8px 20px -16px rgba(23,52,102,.3);
  transition:border-color .3s var(--ease),color .3s,transform .3s var(--ease);
}
.brand-chips a:hover{color:var(--accent);border-color:rgba(2,132,199,.45);transform:translateY(-2px)}

/* catalog head */
.catalog-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:0 0 26px;padding-bottom:18px;border-bottom:1px solid var(--line)}
@media (max-width:640px){.catalog-head{flex-direction:column;align-items:flex-start;gap:8px}}

/* cat head（品牌页） */
.cat-head{
  display:flex;align-items:center;gap:22px;margin:0 0 36px;padding:28px;
  border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);
  box-shadow:0 12px 34px -24px rgba(23,52,102,.18);
}
.cat-badge{width:84px;height:84px;flex:none;display:flex;align-items:center;justify-content:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px}
.cat-badge img{width:100%;height:100%;object-fit:contain}
.cat-head h1{font-family:var(--font-display);font-weight:800;font-size:clamp(26px,3vw,40px);line-height:1.2;margin:10px 0 8px}
.cat-head h1 .grad{font-style:normal;background:linear-gradient(100deg,#0b1f3a 20%,var(--accent) 55%,var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.cat-head .section-desc{max-width:520px}
@media (max-width:640px){.cat-head{flex-direction:column;align-items:flex-start;gap:16px;padding:22px}}

/* search head */
.search-head{margin:0 0 26px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.search-head h2{font-family:var(--font-display);font-weight:800;font-size:clamp(24px,3vw,38px);margin:12px 0 6px;word-break:break-word}
.search-head p{color:var(--text-3);font-size:14px}

/* pagination */
.pagination{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px;margin-top:44px}
.pagination .page-btn,.pagination .current{
  min-width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-mono);font-size:13px;color:var(--text-2);
  border:1px solid var(--line-strong);border-radius:10px;background:var(--surface);
  transition:border-color .3s,color .3s,transform .3s var(--ease);
}
.pagination .page-btn:hover{color:var(--accent);border-color:rgba(2,132,199,.45);transform:translateY(-2px)}
.pagination .page-btn.active,.pagination .current{color:#fff;background:linear-gradient(120deg,var(--accent),var(--accent-2));border-color:transparent}
.pagination .page-btn.disabled{opacity:.45;cursor:not-allowed}
.pagination .page-ellipsis{color:var(--text-3);font-family:var(--font-mono)}

/* 详情页布局 */
.pd-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start;margin-bottom:64px}
@media (max-width:960px){.pd-layout{grid-template-columns:1fr;gap:40px}}

/* 图集 */
.pd-gallery .gallery-main,.pd-gallery .single-image{
  position:relative;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  background:var(--surface);box-shadow:0 18px 44px -30px rgba(23,52,102,.35);
}
.pd-gallery .gallery-main img{width:100%;aspect-ratio:4/3;object-fit:contain;padding:26px}
.gallery-thumbs{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
.gallery-thumb{
  width:76px;height:76px;border:1px solid var(--line);border-radius:10px;overflow:hidden;
  cursor:pointer;background:var(--surface);padding:6px;transition:border-color .3s,transform .3s var(--ease);
}
.gallery-thumb img{width:100%;height:100%;object-fit:contain}
.gallery-thumb.active,.gallery-thumb:hover{border-color:rgba(2,132,199,.55);transform:translateY(-2px)}
.showcase-placeholder{
  display:flex;align-items:center;justify-content:center;min-height:320px;
  border:1px dashed var(--line-strong);border-radius:var(--radius);background:var(--surface-2);
}
.showcase-placeholder img{width:120px;height:120px;object-fit:contain;opacity:.5}

/* 详情信息区 */
.pd-info{position:sticky;top:calc(var(--nav-h) + var(--topbar-h) + 24px)}
@media (max-width:960px){.pd-info{position:static}}
.pd-brand{
  display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;
  padding:6px 16px 6px 6px;border:1px solid var(--line);border-radius:999px;background:var(--surface);
}
.pd-brand img{width:32px;height:32px;object-fit:contain;background:#fff;border-radius:8px;padding:4px;border:1px solid var(--line)}
.pd-brand span{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--text-2)}
.pd-info h2{font-family:var(--font-mono);font-size:clamp(22px,2.6vw,30px);font-weight:600;line-height:1.35;margin-bottom:14px;word-break:break-word}
.pd-desc{color:var(--text-2);font-size:14.5px;margin-bottom:22px}
.pd-sku{
  display:inline-flex;align-items:center;gap:12px;margin-bottom:22px;
  padding:12px 18px;border:1px dashed rgba(2,132,199,.4);border-radius:11px;background:var(--accent-dim);
}
.pd-sku span{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--text-3)}
.pd-sku b{font-family:var(--font-mono);font-size:14px;color:var(--accent);letter-spacing:.03em}
.pd-specs h3{font-family:var(--font-display);font-size:18px;font-weight:700;margin-bottom:14px}
.pd-specs .spec-table{min-width:0}

/* 详情段落块 */
.pd-block{margin:28px 0;padding:30px 32px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:0 12px 34px -24px rgba(23,52,102,.16)}
.pd-block h2{font-family:var(--font-display);font-size:21px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.pd-block h2::before{content:"";width:22px;height:1px;background:var(--accent)}
.pd-block p{color:var(--text-2);font-size:14.5px}
.pd-block p+p{margin-top:12px}
.pd-warn{border-color:rgba(251,191,36,.4);background:linear-gradient(180deg,rgba(251,191,36,.05),var(--surface))}
.pd-warn h2{color:#b45309}
.pd-warn h2::before{background:var(--warn)}

/* FAQ */
.faq-section{margin:28px 0 44px}
.faq-section>h2{font-family:var(--font-display);font-size:21px;font-weight:700;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.faq-section>h2::before{content:"";width:22px;height:1px;background:var(--accent)}
.faq-item{border:1px solid var(--line);border-radius:12px;background:var(--surface);margin-bottom:12px;overflow:hidden;transition:border-color .3s}
.faq-item[open]{border-color:rgba(2,132,199,.4)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:18px 22px;font-family:var(--font-display);font-weight:600;font-size:15px;color:var(--text);
  transition:color .3s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-family:var(--font-mono);font-size:18px;color:var(--accent);transition:transform .3s var(--ease)}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item summary:hover{color:var(--accent)}
.faq-answer{padding:0 22px 18px;color:var(--text-2);font-size:14px}

/* 详情 CTA */
.pd-cta{margin:56px 0 0;border-radius:var(--radius);overflow:hidden}
.pd-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:52px 0;position:relative;z-index:2}
@media (max-width:860px){.pd-cta-inner{flex-direction:column;align-items:flex-start;gap:22px;padding:40px 0}}
.pd-cta .overline::before{background:linear-gradient(90deg,var(--accent-2),transparent)}
.pd-cta h2{font-family:var(--font-display);font-weight:800;font-size:clamp(24px,3vw,38px);line-height:1.2;margin:14px 0 10px}
.pd-cta p{color:var(--text-2);font-size:14.5px}
.pd-cta-btns{display:flex;gap:14px;flex-wrap:wrap}

/* 404 建议区块 */
.suggested-block{margin-top:-40px;padding-top:40px}

/* 搜索卡库存状态 */
.prod-card .specs span.in-stock{color:var(--ok)}
.prod-card .specs span.out-stock{color:var(--warn)}
.prod-card .tags span.in-stock{color:var(--ok);border-color:rgba(52,211,153,.35);background:rgba(52,211,153,.08)}
.prod-card .tags span.out-stock{color:var(--warn);border-color:rgba(251,191,36,.4);background:rgba(251,191,36,.08)}

/* 暗色微调 */
:root[data-theme="dark"] .cat-head,
:root[data-theme="dark"] .pd-block,
:root[data-theme="dark"] .faq-item,
:root[data-theme="dark"] .pd-gallery .gallery-main,
:root[data-theme="dark"] .showcase-placeholder{background:rgba(255,255,255,.03)}
:root[data-theme="dark"] .brand-chips a{background:rgba(255,255,255,.03)}