:root{
  --ink:#071c26;
  --ink-2:#0a2531;
  --ink-3:#0f3242;
  --paper:#eef3f5;
  --paper-2:#e3ecef;
  --card:#ffffff;
  --line:#dae6ea;
  --line-soft:#e9f0f3;
  --muted:#5f7b86;
  --accent:#12b4ca;
  --accent-2:#7ce7f2;
  --accent-ink:#0a7080;
  --accent-soft:#e2f6f8;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei UI","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",sans-serif;
  --font-num:"Bahnschrift","DIN Alternate","Helvetica Neue",Arial,sans-serif;
  --shadow:0 26px 60px -34px rgba(7,28,38,.45);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-cn);
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{list-style:none}
::selection{background:var(--accent-2);color:var(--ink)}
.shell{width:min(1320px,calc(100% - 80px));margin:0 auto}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- top bar ---------- */
.topbar{background:#04131b;color:#7f9aa3;font-size:12px;letter-spacing:.04em}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:38px;gap:24px}
.topbar-left{display:flex;align-items:center;gap:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-left .pulse{width:6px;height:6px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 0 4px rgba(124,231,242,.12);flex:none}
.topbar-right{display:flex;align-items:center;gap:22px;white-space:nowrap}
.topbar-right a{transition:color .25s}
.topbar-right a:hover{color:var(--accent-2)}
.topbar-right .sep{width:1px;height:11px;background:rgba(255,255,255,.12)}
.topbar-right .lbl{color:#54707a;margin-right:4px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#071c26;
  -webkit-backdrop-filter:none;backdrop-filter:none;
  border-bottom:none;
  transition:box-shadow .3s,background .3s;
}
.site-header.is-scrolled{background:#05161f;box-shadow:0 14px 40px -22px rgba(0,0,0,.8)}
.header-inner{display:flex;align-items:center;gap:36px;height:86px}
.brand{display:flex;align-items:center;gap:13px;flex:none}
.brand-mark{width:44px;height:44px;flex:none;filter:drop-shadow(0 6px 16px rgba(18,180,202,.28))}
.brand-mark .badge{stroke:rgba(124,231,242,.35)}
.brand-text{display:flex;flex-direction:column;line-height:1;gap:7px}
.brand-name{font-size:22px;font-weight:800;letter-spacing:.1em;color:#f1fafb}
.brand-sub{font-family:var(--font-num);font-size:9.5px;letter-spacing:.24em;color:rgba(196,226,232,.52);text-transform:uppercase;white-space:nowrap}
.nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:4px}
.nav-list>li{position:relative}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:rgba(233,246,248,.76);
  transition:color .25s,background .25s;white-space:nowrap;
}
.nav-link:hover,.nav-list>li.is-open>.nav-link{color:#fff;background:rgba(255,255,255,.06)}
.nav-list>li>.nav-link.is-active{color:#fff}
.nav-list>li>.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--accent-2);
}
.caret{transition:transform .25s;opacity:.7}
.nav-list>li.is-open .caret,.nav-list>li:hover .caret{transform:rotate(180deg)}

/* mega menu */
.mega{
  position:absolute;top:calc(100% + 14px);left:50%;transform:translate(-50%,10px);
  width:640px;padding:12px;border-radius:20px;background:#fff;color:var(--ink);
  box-shadow:0 40px 90px -30px rgba(3,18,26,.55),0 0 0 1px rgba(7,28,38,.06);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
}
.mega::before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px}
.nav-list>li:hover>.mega,.nav-list>li.is-open>.mega{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
.mega-head{display:flex;align-items:baseline;justify-content:space-between;padding:10px 14px 14px;border-bottom:1px solid var(--line-soft)}
.mega-head strong{font-size:16px;letter-spacing:.06em}
.mega-head span{font-family:var(--font-num);font-size:10px;letter-spacing:.22em;color:var(--accent-ink)}
.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:2px;padding-top:8px}
.mega-item{display:flex;align-items:center;gap:14px;padding:12px 14px;border-radius:12px;transition:background .2s,color .2s}
.mega-item:hover{background:var(--accent-soft)}
.mega-no{font-family:var(--font-num);font-size:11px;color:var(--accent-ink);letter-spacing:.08em;width:22px;flex:none}
.mega-item span.name{font-size:14.5px;font-weight:500}
.mega-item .arrow{margin-left:auto;opacity:0;transform:translateX(-4px);transition:.2s;color:var(--accent-ink)}
.mega-item:hover .arrow{opacity:1;transform:none}

/* header search */
.search{
  flex:none;display:flex;align-items:center;gap:6px;
  width:238px;padding:4px 4px 4px 15px;border-radius:999px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  transition:width .3s var(--ease),border-color .3s,background .3s;
}
.search:focus-within{width:300px;border-color:rgba(124,231,242,.6);background:rgba(255,255,255,.09)}
.search svg{flex:none;color:rgba(196,226,232,.55)}
.search input{
  flex:1;min-width:0;height:30px;border:0;outline:0;background:none;
  color:#eaf7f9;font-size:13px;color-scheme:dark;
}
.search input::placeholder{color:rgba(196,226,232,.45)}
.search button{
  flex:none;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,#8beef8,#2cc9dd);color:#052029;
  transition:transform .2s,box-shadow .2s;
}
.search button:hover{transform:scale(1.06);box-shadow:0 0 0 5px rgba(124,231,242,.14)}
.menu-btn{display:none;width:42px;height:42px;border-radius:12px;border:1px solid rgba(255,255,255,.14);place-items:center;color:#eaf7f9}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;background:var(--ink);color:#eaf5f7;
  padding:54px 0 92px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(680px 420px at 82% 34%,rgba(18,180,202,.22),transparent 68%),
    radial-gradient(540px 380px at 8% 92%,rgba(11,60,78,.85),transparent 70%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:
    repeating-linear-gradient(90deg,rgba(255,255,255,.035) 0 1px,transparent 1px 132px),
    repeating-linear-gradient(0deg,rgba(255,255,255,.025) 0 1px,transparent 1px 132px);
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 88%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 88%);
}
.hero .n2{
  position:absolute;right:-2%;bottom:-14%;font-family:var(--font-num);font-weight:600;
  font-size:clamp(220px,26vw,400px);line-height:1;letter-spacing:-.04em;
  color:transparent;-webkit-text-stroke:1px rgba(124,231,242,.09);
  user-select:none;pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.hero-copy{min-width:0}
.hero-slides{position:relative;transition:height .55s var(--ease)}
.hero-slide{position:absolute;left:0;right:0;top:0;opacity:0;transform:translateY(16px);pointer-events:none;transition:opacity .65s var(--ease),transform .65s var(--ease)}
.hero-slide.is-active{opacity:1;transform:none;pointer-events:auto}
.eyebrow{display:flex;align-items:center;gap:14px;font-size:11px;letter-spacing:.3em;color:var(--accent-2);text-transform:uppercase}
.eyebrow::before{content:"";width:34px;height:1px;background:linear-gradient(90deg,var(--accent-2),transparent)}
.hero-slide h2{
  margin:20px 0 22px;font-size:clamp(38px,4.4vw,62px);line-height:1.12;
  font-weight:800;letter-spacing:.01em;color:#f4fbfc;
}
.hero-slide h2 .thin{font-weight:300;color:rgba(234,245,247,.55)}
.hero-text{max-width:36em;font-size:15.5px;line-height:2;color:#a9c4cc}
.hero-list{display:grid;grid-template-columns:1fr 1fr;gap:12px 28px;margin-top:4px;max-width:30em}
.hero-list li{display:flex;align-items:center;gap:11px;font-size:15px;color:#c5dbe1;padding:6px 0;border-bottom:1px solid rgba(255,255,255,.07)}
.hero-list li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent-2);flex:none;opacity:.8}
.hero-actions{display:flex;align-items:center;gap:14px;margin-top:36px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;height:50px;padding:0 26px;border-radius:999px;font-size:14.5px;font-weight:600;letter-spacing:.03em;transition:transform .25s var(--ease),box-shadow .25s,background .25s,border-color .25s,color .25s}
.btn svg{transition:transform .25s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:linear-gradient(135deg,#9af1f9 0%,#4fd8e7 48%,#17aec5 100%);color:#04202a;box-shadow:0 18px 40px -18px rgba(79,216,231,.65)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 24px 50px -18px rgba(79,216,231,.8)}
.btn-ghost{border:1px solid rgba(255,255,255,.2);color:#dff2f5;background:rgba(255,255,255,.02)}
.btn-ghost:hover{border-color:rgba(124,231,242,.7);color:#fff;background:rgba(124,231,242,.08)}
.hero-controls{display:flex;align-items:center;justify-content:space-between;margin-top:48px;gap:20px}
.hero-dots{display:flex;align-items:center;gap:8px}
.hero-dot{display:flex;align-items:center;gap:10px;padding:8px 0;color:rgba(196,226,232,.45);font-family:var(--font-num);font-size:11px;letter-spacing:.14em;transition:color .3s}
.hero-dot .bar{display:block;width:36px;height:2px;border-radius:2px;background:rgba(255,255,255,.16);overflow:hidden;position:relative}
.hero-dot .bar::after{content:"";position:absolute;inset:0;background:var(--accent-2);transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease)}
.hero-dot.is-active{color:var(--accent-2)}
.hero-dot.is-active .bar::after{transform:scaleX(1)}
.hero-arrows{display:flex;gap:10px}
.hero-arrow{width:46px;height:46px;border-radius:50%;border:1px solid rgba(255,255,255,.16);display:grid;place-items:center;color:#dff2f5;transition:.25s}
.hero-arrow:hover{background:var(--accent-2);border-color:var(--accent-2);color:#04202a;transform:translateY(-2px)}
.hero-stage-col{position:relative;display:flex;justify-content:center;align-items:center}
.hero-stage{
  position:relative;width:min(100%,510px);aspect-ratio:1;border-radius:50%;
  background:radial-gradient(circle at 50% 40%,#ffffff 0%,#eef9fa 38%,#d3edf1 66%,#a9d6dd 100%);
  box-shadow:0 0 0 1px rgba(255,255,255,.16),0 50px 110px -42px rgba(124,231,242,.5),inset 0 -40px 70px rgba(10,60,75,.14);
  overflow:hidden;
}
.hero-stage::after{
  content:"";position:absolute;inset:0;border-radius:50%;
  background:radial-gradient(circle at 50% 118%,rgba(7,28,38,.24),transparent 46%);
  pointer-events:none;
}
.stage-ring{position:absolute;inset:6.5%;border:1px dashed rgba(10,112,128,.28);border-radius:50%;animation:spin 90s linear infinite}
.stage-ring.two{inset:-4%;border-style:solid;border-color:rgba(124,231,242,.18);animation-direction:reverse;animation-duration:140s}
@keyframes spin{to{transform:rotate(360deg)}}
.stage-img{
  position:absolute;inset:0;margin:auto;width:99%;height:99%;object-fit:contain;
  mix-blend-mode:multiply;filter:saturate(1.04) contrast(1.02);
  opacity:0;transform:scale(.96) translateY(10px);
  transition:opacity .7s var(--ease),transform .7s var(--ease);
}
.stage-img.is-active{opacity:1;transform:none}
.stage-tag{
  position:absolute;left:50%;bottom:7.5%;transform:translateX(-50%);
  display:inline-flex;align-items:center;gap:8px;padding:8px 15px;border-radius:999px;
  background:rgba(255,255,255,.82);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border:1px solid rgba(10,112,128,.18);color:#083441;
  font-family:var(--font-num);font-size:11.5px;letter-spacing:.14em;white-space:nowrap;
  box-shadow:0 12px 26px -16px rgba(4,32,42,.5);
}
.stage-tag i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(18,180,202,.16);flex:none}

/* ---------- section scaffolding ---------- */
.section{padding:96px 0}
.section-specs{background:var(--paper)}
.section-apps{background:var(--paper-2);padding-bottom:48px}
.section-service{background:var(--paper)}
.section-faq{background:var(--paper);padding-top:48px}
#categories,#products{scroll-margin-top:104px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;padding-bottom:26px;margin-bottom:40px;border-bottom:1px solid var(--line)}
.kicker{display:block;font-family:var(--font-num);font-size:10.5px;letter-spacing:.26em;color:var(--accent-ink);text-transform:uppercase;margin-bottom:13px}
.section-head h2,.news-head h2{font-size:clamp(28px,3vw,38px);line-height:1.2;font-weight:800;letter-spacing:.02em}
.head-note{max-width:30em;font-size:13px;line-height:1.9;color:var(--muted);text-align:right}
.head-link{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;color:var(--accent-ink);white-space:nowrap;transition:gap .25s}
.head-link:hover{gap:14px}

/* ---------- categories ---------- */
.section-cats{background:var(--paper)}
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.cat-card{
  display:flex;align-items:center;gap:16px;height:104px;padding:0 24px;
  background:var(--card);border:1px solid var(--line);border-radius:16px;
  transition:transform .3s var(--ease),background .3s,border-color .3s,box-shadow .3s,color .3s;
}
.cat-no{font-family:var(--font-num);font-size:11.5px;letter-spacing:.1em;color:var(--accent-ink);width:26px;flex:none;align-self:flex-start;padding-top:31px;transition:color .3s}
.cat-main{display:flex;flex-direction:column;gap:6px;flex:1;min-width:0}
.cat-name{font-size:15.5px;font-weight:600;letter-spacing:.01em;line-height:1.4}
.cat-desc{font-size:11.5px;color:var(--muted);letter-spacing:.03em;transition:color .3s}
.cat-arrow{opacity:.28;transform:translateX(-4px);transition:.3s var(--ease);flex:none}
.cat-card:hover{background:var(--ink);border-color:var(--ink);color:#f2fafb;transform:translateY(-3px);box-shadow:var(--shadow)}
.cat-card:hover .cat-no{color:var(--accent-2)}
.cat-card:hover .cat-desc{color:rgba(196,226,232,.6)}
.cat-card:hover .cat-arrow{opacity:1;transform:none;color:var(--accent-2)}

/* ---------- products ---------- */
.section-products{background:#f7fafb}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.product-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:18px;overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s,border-color .35s;
}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(18,180,202,.45)}
.product-media{
  position:relative;aspect-ratio:5/4;padding:20px;
  background:radial-gradient(circle at 50% 38%,#fff 0%,#f2f9fa 58%,#e7f1f4 100%);
  display:flex;align-items:center;justify-content:center;
}
.product-media::after{content:"";position:absolute;left:18%;right:18%;bottom:11%;height:1px;background:linear-gradient(90deg,transparent,rgba(10,112,128,.16),transparent)}
.product-media img{width:100%;height:100%;object-fit:contain;mix-blend-mode:multiply;transition:transform .5s var(--ease)}
.product-card:hover .product-media img{transform:scale(1.05)}
.product-model{
  position:absolute;top:14px;left:14px;z-index:2;
  font-family:var(--font-num);font-size:10.5px;letter-spacing:.12em;color:var(--accent-ink);
  background:rgba(255,255,255,.9);border:1px solid rgba(10,112,128,.22);
  padding:4px 9px;border-radius:999px;
}
.product-body{display:flex;flex-direction:column;flex:1;padding:20px 22px 22px}
.product-cat{font-size:11.5px;letter-spacing:.1em;color:var(--muted)}
.product-body h3{font-size:15px;line-height:1.6;font-weight:600;margin:9px 0 20px;letter-spacing:.01em}
.product-link{display:inline-flex;align-items:center;gap:8px;margin-top:auto;font-size:12.5px;font-weight:600;color:var(--accent-ink)}
.product-link svg{transition:transform .25s var(--ease)}
.product-card:hover .product-link svg{transform:translateX(4px)}

/* ---------- news ---------- */
.section-news{background:#f7fafb;padding-top:48px;padding-bottom:48px}
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:30px 34px 18px}
.news-head{display:flex;align-items:center;gap:14px;padding-bottom:20px}
.news-head h2{font-size:24px}
.news-head .kicker{margin:0}
.news-head .more{margin-left:auto;display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;color:var(--accent-ink);transition:gap .25s}
.news-head .more:hover{gap:12px}
.news-list li{border-top:1px solid var(--line-soft)}
.news-list a{display:grid;grid-template-columns:34px 1fr auto;align-items:center;gap:12px;padding:15px 2px;transition:padding .25s var(--ease)}
.news-list .no{font-family:var(--font-num);font-size:10.5px;letter-spacing:.1em;color:#9db3bb}
.news-list .title{font-size:14.5px;line-height:1.6;color:#24414d;transition:color .2s}
.news-list time{font-family:var(--font-num);font-size:11.5px;letter-spacing:.1em;color:#8aa2ab;font-variant-numeric:tabular-nums}
.news-list a:hover{padding-left:8px}
.news-list a:hover .title{color:var(--accent-ink)}
.news-list a:hover .no{color:var(--accent)}

/* ---------- spec table ---------- */
.spec-card{background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden}
.spec-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.spec-table{width:100%;border-collapse:collapse;min-width:880px}
.spec-table thead th{background:var(--ink);color:#e6f4f6;font-size:12px;font-weight:600;text-align:left;padding:15px 18px;white-space:nowrap;letter-spacing:.05em}
.spec-table thead th small{display:block;margin-top:4px;font-family:var(--font-num);font-size:9.5px;font-weight:400;letter-spacing:.16em;color:rgba(196,226,232,.45)}
.spec-table tbody td{padding:15px 18px;border-top:1px solid var(--line-soft);font-size:13.5px;white-space:nowrap;transition:background .2s}
.spec-table tbody tr:hover td{background:#f4fafb}
.spec-table td:first-child,.spec-table th:first-child{position:sticky;left:0;z-index:2;background:#fff}
.spec-table thead th:first-child{background:var(--ink)}
.spec-table tbody tr:hover td:first-child{background:#f4fafb}
.spec-model{font-family:var(--font-num);font-weight:600;letter-spacing:.06em;color:var(--ink);border-bottom:1px solid transparent;transition:.2s}
.spec-model:hover{color:var(--accent-ink);border-color:var(--accent)}
.spec-series{display:inline-block;font-size:11.5px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:3px 10px}
.spec-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:#24414d}
.spec-num.hl{color:var(--accent-ink);font-weight:600}
.spec-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 20px;border-top:1px solid var(--line-soft);font-size:12px;color:var(--muted);flex-wrap:wrap}
.spec-foot a{color:var(--accent-ink);font-weight:600}
.spec-hint{display:none;font-size:11px;color:var(--muted);padding:10px 20px 0}

/* ---------- applications ---------- */
.app-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.app-card{position:relative;display:flex;flex-direction:column;min-height:196px;padding:28px 28px 30px;background:var(--card);border:1px solid var(--line);border-radius:18px;transition:transform .3s var(--ease),border-color .3s,box-shadow .3s;overflow:hidden}
.app-card::before{content:"";position:absolute;left:0;top:0;height:2px;width:0;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .4s var(--ease)}
.app-card:hover{transform:translateY(-4px);border-color:rgba(18,180,202,.4);box-shadow:var(--shadow)}
.app-card:hover::before{width:100%}
.app-no{font-family:var(--font-num);font-size:11px;letter-spacing:.14em;color:var(--accent-ink)}
.app-card h3{font-size:19px;font-weight:700;margin:18px 0 12px;letter-spacing:.02em}
.app-card p{font-size:13.5px;line-height:1.9;color:var(--muted)}

/* ---------- service ---------- */
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.service-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px 24px 28px;transition:transform .3s var(--ease),box-shadow .3s,border-color .3s}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(18,180,202,.35)}
.service-icon{width:46px;height:46px;border-radius:13px;background:var(--accent-soft);color:var(--accent-ink);display:grid;place-items:center;margin-bottom:20px}
.service-card h3{font-size:16.5px;font-weight:700;margin-bottom:10px}
.service-card p{font-size:13px;line-height:1.9;color:var(--muted)}
.service-scope{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:20px;padding:20px 24px;border:1px solid var(--line);border-radius:16px;background:#f7fafb}
.service-scope .label{font-size:12.5px;color:var(--muted);letter-spacing:.04em}
.scope-tags{display:flex;gap:8px;flex-wrap:wrap}
.scope-tags span{font-size:12px;color:#33525e;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 12px}
.service-scope a{margin-left:auto;font-size:12px;font-weight:600;color:var(--accent-ink);white-space:nowrap}
.service-scope a:hover{color:var(--ink)}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:10px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .25s,box-shadow .25s}
.faq-item[open]{border-color:rgba(18,180,202,.4);box-shadow:0 18px 40px -30px rgba(7,28,38,.35)}
.faq-item summary{display:flex;align-items:center;gap:16px;padding:20px 24px;cursor:pointer;list-style:none;font-size:15.5px;font-weight:600;transition:color .2s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent-ink)}
.faq-no{font-family:var(--font-num);font-size:11px;letter-spacing:.12em;color:var(--accent-ink);flex:none}
.faq-plus{margin-left:auto;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;flex:none;transition:.25s;color:var(--muted)}
.faq-item[open] .faq-plus{transform:rotate(45deg);background:var(--ink);border-color:var(--ink);color:#fff}
.faq-a{padding:0 24px 22px 59px;font-size:13.5px;line-height:1.95;color:var(--muted);max-width:62em}
.faq-a a{color:var(--accent-ink);font-weight:600}

/* ---------- about ---------- */
.about{position:relative;overflow:hidden;background:var(--ink);color:#dceef1;padding:100px 0}
.about::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(620px 420px at 78% 18%,rgba(18,180,202,.18),transparent 70%),
    repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0 1px,transparent 1px 132px);
  pointer-events:none;
}
.about::after{content:"";position:absolute;right:-60px;bottom:-160px;width:520px;height:520px;border:1px solid rgba(124,231,242,.12);border-radius:50%;pointer-events:none}
.about-inner{position:relative;z-index:2;display:grid;grid-template-columns:.8fr 1.2fr;gap:80px;align-items:center}
.about .kicker{color:var(--accent-2)}
.about-year{
  font-family:var(--font-num);font-weight:600;font-size:clamp(88px,10vw,148px);line-height:.9;letter-spacing:-.02em;
  background:linear-gradient(180deg,#a6f3fa 0%,#38c4d8 55%,#137e91 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 18px 40px rgba(18,180,202,.22));
}
.about-year-label{margin-top:16px;font-size:12.5px;letter-spacing:.24em;color:rgba(196,226,232,.6)}
.about-text{font-size:15.5px;line-height:2.1;color:#bad3d9;padding-left:34px;border-left:1px solid rgba(124,231,242,.35)}
.about-links{display:flex;gap:12px;margin-top:34px;padding-left:34px}
.about-link{display:inline-flex;align-items:center;gap:9px;height:44px;padding:0 22px;border-radius:999px;border:1px solid rgba(255,255,255,.18);font-size:13px;font-weight:600;color:#e3f3f6;transition:.25s}
.about-link:hover{border-color:var(--accent-2);background:rgba(124,231,242,.1);transform:translateY(-2px)}
.about-badges{display:flex;gap:10px;margin-top:34px;padding-left:34px}
.about-badges span{font-family:var(--font-num);font-size:10px;letter-spacing:.18em;color:rgba(196,226,232,.55);border:1px solid rgba(255,255,255,.14);padding:6px 12px;border-radius:999px}
.about-sub{font-size:13.5px;line-height:2;color:#8faeb6;margin-top:16px;padding-left:34px}
.about-stats{display:flex;gap:40px;margin-top:34px;padding-left:34px;flex-wrap:wrap}
.about-stat strong{display:block;font-family:var(--font-num);font-size:30px;font-weight:600;line-height:1;color:var(--accent-2);letter-spacing:.02em}
.about-stat span{display:block;margin-top:8px;font-size:11px;letter-spacing:.14em;color:rgba(196,226,232,.5)}

/* ---------- contact band ---------- */
.contact-band{position:relative;overflow:hidden;background:linear-gradient(120deg,#07202b 0%,#0a2c39 55%,#0c3a49 100%);color:#e6f4f6;padding:86px 0}
.contact-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(560px 360px at 18% 18%,rgba(18,180,202,.2),transparent 70%),
    repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0 1px,transparent 1px 120px);
}
.contact-band::after{content:"";position:absolute;right:-80px;top:-120px;width:460px;height:460px;border:1px solid rgba(124,231,242,.12);border-radius:50%;pointer-events:none}
.contact-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center}
.contact-band .kicker{color:var(--accent-2)}
.contact-band h2{font-size:clamp(30px,3.4vw,44px);font-weight:800;letter-spacing:.02em;margin:14px 0 16px;color:#f4fbfc}
.contact-band p{font-size:14.5px;line-height:1.9;color:#a9c4cc;max-width:32em}
.contact-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.contact-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.13);border-radius:20px;padding:28px 30px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center}
.contact-list{display:grid;gap:13px}
.contact-row{display:flex;align-items:baseline;gap:14px;font-size:13px}
.contact-row .lbl{width:38px;color:#6f8c96;flex:none;letter-spacing:.06em}
.contact-row a,.contact-row .val{color:#dbeef2;font-variant-numeric:tabular-nums;word-break:break-all}
.contact-row a:hover{color:var(--accent-2)}
.contact-qr{text-align:center}
.contact-qr img{width:104px;height:104px;background:#fff;border-radius:10px;padding:5px}
.contact-qr p{font-size:10.5px;letter-spacing:.08em;color:#6f8c96;margin-top:8px}

/* ---------- footer ---------- */
.site-footer{background:#04131b;color:#8ea9b2;padding:66px 0 0}
.footer-top{display:grid;grid-template-columns:1.45fr .9fr .9fr 1.2fr;gap:48px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .brand{gap:12px}
.footer-brand .brand-mark{width:40px;height:40px}
.footer-brand .brand-name{font-size:20px}
.footer-brand .brand-sub{font-size:9px}
.footer-desc{font-size:12.5px;line-height:1.9;color:#7f9aa3;margin:18px 0 22px;max-width:26em}
.footer-contact{display:grid;gap:9px;font-size:12.5px}
.footer-contact div{display:flex;gap:12px;align-items:baseline}
.footer-contact .lbl{color:#54707a;width:34px;flex:none;letter-spacing:.06em}
.footer-contact a{color:#b9d1d7;font-variant-numeric:tabular-nums;transition:color .2s}
.footer-contact a:hover{color:var(--accent-2)}
.footer-qr{display:flex;align-items:center;gap:14px;margin-top:22px}
.footer-qr img{width:78px;height:78px;border-radius:10px;background:#fff;padding:4px}
.footer-qr p{font-size:11.5px;line-height:1.7;color:#6d8892}
.footer-col h4{font-size:13px;font-weight:600;letter-spacing:.1em;color:#e6f3f5;margin-bottom:18px}
.footer-col ul li a{display:inline-block;font-size:12.5px;line-height:2.15;color:#8ea9b2;transition:color .2s,transform .2s}
.footer-col ul li a:hover{color:var(--accent-2);transform:translateX(3px)}
.footer-friends{display:grid;grid-template-columns:150px 1fr;gap:24px;align-items:start;padding:24px 0 30px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-friends h4{font-size:13px;font-weight:600;letter-spacing:.1em;color:#e6f3f5;margin:0;padding-top:3px}
.friend-list{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:9px 24px}
.friend-list li a{font-size:12px;line-height:1.8;color:#8ea9b2;transition:color .2s}
.friend-list li a:hover{color:var(--accent-2)}
.footer-contact-col .footer-qr{margin-top:20px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0 28px;font-size:11.5px;color:#5f7a84;flex-wrap:wrap}
.footer-bottom p{display:flex;flex-wrap:wrap;gap:4px 12px;align-items:center;line-height:1.8}
.footer-bottom a{color:#7f9aa3;transition:color .2s}
.footer-bottom a:hover{color:var(--accent-2)}
.footer-icp{font-variant-numeric:tabular-nums}

/* ---------- service rail ---------- */
.service-rail{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:70;display:flex;flex-direction:column;gap:10px}
.service-btn{position:relative;width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:#0a2530;border:1px solid rgba(255,255,255,.12);color:#cfe9ee;transition:.25s;box-shadow:0 12px 28px -16px rgba(0,0,0,.8)}
.service-btn:hover{background:var(--accent-2);border-color:var(--accent-2);color:#052029;transform:translateY(-2px)}
.service-tip{position:absolute;right:calc(100% + 12px);top:50%;transform:translate(6px,-50%);white-space:nowrap;background:#0a2530;border:1px solid rgba(255,255,255,.1);color:#dff2f5;font-size:12px;padding:7px 11px;border-radius:9px;opacity:0;visibility:hidden;transition:.22s;pointer-events:none}
.service-btn:hover .service-tip{opacity:1;visibility:visible;transform:translate(0,-50%)}
.mobile-bar{display:none}

/* ---------- QR modal ---------- */
.qr-modal{position:fixed;inset:0;z-index:120;display:grid;place-items:center;background:rgba(3,16,23,.72);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);opacity:0;visibility:hidden;transition:.25s}
.qr-modal.is-open{opacity:1;visibility:visible}
.qr-dialog{width:320px;max-width:calc(100% - 40px);background:#fff;border-radius:22px;padding:32px 30px 28px;text-align:center;transform:translateY(12px) scale(.98);transition:.3s var(--ease);box-shadow:0 50px 120px -40px rgba(0,0,0,.7)}
.qr-modal.is-open .qr-dialog{transform:none}
.qr-dialog h3{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:6px}
.qr-dialog p{font-size:12.5px;color:var(--muted);margin-bottom:20px}
.qr-dialog img{width:170px;height:170px;margin:0 auto 16px;border-radius:10px;border:1px solid var(--line);padding:6px;background:#fff}
.qr-dialog .num{font-family:var(--font-num);font-size:15px;letter-spacing:.1em;color:var(--accent-ink)}
.qr-close{position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:50%;background:var(--paper);color:var(--ink);display:grid;place-items:center;font-size:18px;line-height:1}
.qr-dialog{position:relative}

/* ---------- mobile menu ---------- */
.mobile-menu{position:fixed;inset:0;z-index:110;background:var(--ink);color:#eaf5f7;padding:22px 24px 40px;overflow-y:auto;transform:translateY(-100%);visibility:hidden;transition:transform .4s var(--ease),visibility .4s}
.mobile-menu.is-open{transform:none;visibility:visible}
.mm-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.mm-brand{display:flex;align-items:center;gap:11px}
.mm-brand .brand-mark{width:38px;height:38px}
.mm-brand span{font-size:18px;font-weight:800;letter-spacing:.1em}
.mm-close{width:40px;height:40px;border-radius:12px;border:1px solid rgba(255,255,255,.16);display:grid;place-items:center;color:#eaf5f7}
.mm-search{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:5px 5px 5px 15px;margin-bottom:28px}
.mm-search input{flex:1;min-width:0;height:40px;border:0;outline:0;background:none;color:#eaf7f9;font-size:14px;color-scheme:dark}
.mm-search input::placeholder{color:rgba(196,226,232,.45)}
.mm-search button{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,#8beef8,#2cc9dd);color:#052029}
.mm-label{font-family:var(--font-num);font-size:10px;letter-spacing:.24em;color:rgba(196,226,232,.45);margin:24px 0 12px}
.mm-nav{display:grid;gap:2px}
.mm-nav a{display:flex;align-items:center;justify-content:space-between;padding:14px 2px;border-bottom:1px solid rgba(255,255,255,.07);font-size:16px;font-weight:500;color:#dceef1}
.mm-cats{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.mm-cats a{display:flex;align-items:center;gap:10px;padding:13px 12px;border-radius:12px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.07);font-size:13.5px;color:#cfe6ea}
.mm-cats .no{font-family:var(--font-num);font-size:10px;color:var(--accent-2);letter-spacing:.08em}
.mm-contact{display:flex;gap:10px;margin-top:28px}
.mm-contact a{flex:1;display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;border-radius:12px;border:1px solid rgba(255,255,255,.16);font-size:13px;font-weight:600}

/* ---------- reveal ---------- */
.js [data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .75s var(--ease),transform .75s var(--ease)}
.js [data-reveal].is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .js [data-reveal]{opacity:1;transform:none}
}

/* ---------- responsive ---------- */
@media (max-width:1260px){
  .shell{width:calc(100% - 56px)}
  .header-inner{gap:24px}
  .nav-link{padding:10px 10px;font-size:14px}
  .search{width:200px}
  .search:focus-within{width:240px}
  .product-grid{grid-template-columns:repeat(4,1fr);gap:16px}
}
@media (max-width:1120px){
  .nav{display:none}
  .search{display:none}
  .menu-btn{display:grid}
  .header-inner{height:76px}
  .brand{margin-right:auto}
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero-stage{width:min(100%,440px);margin:0 auto}
  .hero-copy{max-width:640px}
  .hero{padding-bottom:80px}
  .about-inner{grid-template-columns:1fr;gap:44px}
  .about-text{padding-left:0;border-left:0;border-top:1px solid rgba(124,231,242,.25);padding-top:28px}
  .about-links,.about-badges,.about-sub,.about-stats{padding-left:0}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .app-grid{grid-template-columns:repeat(2,1fr)}
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .contact-inner{grid-template-columns:1fr;gap:40px}
  .contact-band p{max-width:40em}
  .footer-top{grid-template-columns:1fr 1fr;gap:36px}
  .footer-friends{grid-template-columns:1fr;gap:14px}
  .friend-list{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:900px){
  .section{padding:76px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;padding-bottom:22px;margin-bottom:30px}
  .head-note{text-align:left;max-width:34em}
  .spec-hint{display:block}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr}
  .service-rail{display:none}
  .mobile-bar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:90;height:58px;background:rgba(4,19,27,.95);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-top:1px solid rgba(255,255,255,.1)}
  .mobile-bar a,.mobile-bar button{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;color:#dff2f5;font-size:13px;font-weight:500}
  .mobile-bar a+a,.mobile-bar button{border-left:1px solid rgba(255,255,255,.08)}
  body{padding-bottom:58px}
  .topbar{display:none}
  .site-header{top:0}
}
@media (max-width:640px){
  .shell{width:calc(100% - 36px)}
  .header-inner{height:68px}
  .brand-mark{width:38px;height:38px}
  .brand-name{font-size:18px}
  .brand-sub{font-size:8px;letter-spacing:.18em}
  .hero{padding:38px 0 64px}
  .hero-slide h2{font-size:34px;margin:16px 0 16px}
  .hero-text{font-size:14px;line-height:1.9}
  .hero-list{grid-template-columns:1fr;gap:4px}
  .hero-actions{margin-top:28px;gap:10px}
  .btn{height:46px;padding:0 20px;font-size:13.5px}
  .hero-controls{margin-top:34px}
  .hero-arrow{width:40px;height:40px}
  .hero-dot .bar{width:26px}
  .cat-grid{grid-template-columns:1fr;gap:10px}
  .cat-card{height:88px;padding:0 18px}
  .cat-no{padding-top:26px}
  .cat-name{font-size:14px}
  .cat-desc{font-size:11px}
  .app-grid{grid-template-columns:1fr;gap:12px}
  .app-card{min-height:0;padding:24px 22px 26px}
  .app-card h3{font-size:17px;margin:14px 0 9px}
  .service-grid{grid-template-columns:1fr;gap:12px}
  .service-card{padding:22px 20px}
  .service-scope{padding:18px}
  .service-scope a{margin-left:0}
  .faq-item summary{padding:17px 18px;font-size:14px;gap:12px}
  .faq-a{padding:0 18px 18px}
  .contact-band{padding:64px 0}
  .contact-card{grid-template-columns:1fr;justify-items:start;padding:24px 22px}
  .contact-qr{justify-self:start;text-align:left}
  .about-sub,.about-stats{padding-left:0}
  .about-stats{gap:28px;margin-top:26px}
  .product-grid{grid-template-columns:1fr 1fr;gap:12px}
  .product-media{aspect-ratio:1;padding:12px}
  .product-body{padding:14px 14px 16px}
  .product-body h3{font-size:13.5px;margin:7px 0 14px}
  .product-cat{font-size:10.5px}
  .product-model{top:10px;left:10px;font-size:9.5px}
  .news-card{padding:22px 20px 12px;border-radius:16px}
  .news-head h2{font-size:21px}
  .news-list a{grid-template-columns:26px 1fr auto;gap:9px;padding:13px 0}
  .news-list .title{font-size:13px}
  .about{padding:70px 0}
  .about-year{font-size:86px}
  .about-text{font-size:14px;line-height:1.95}
  .about-badges{flex-wrap:wrap}
  .footer-top{grid-template-columns:1fr;gap:34px;padding-bottom:34px}
  .footer-friends{grid-template-columns:1fr;gap:12px}
  .friend-list{grid-template-columns:1fr 1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .mobile-menu{padding:18px 20px 40px}
  .mm-cats{grid-template-columns:1fr}
}
@media (max-width:380px){
  .product-grid{grid-template-columns:1fr}
  .brand-sub{display:none}
}