/* ============================================================
   Huabuyu Industrial - Design System
   Zero external dependencies. System fonts. ~1 HTTP request.
   ============================================================ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul[class],ol[class]{list-style:none;padding:0}
img,svg{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}

:root{
  --ink:#0A1826; --ink-2:#12293F; --ink-3:#1B3A57;
  --body:#263644; --steel:#5C7085; --steel-2:#93A4B4;
  --line:#E2E8ED; --line-2:#C9D4DD;
  --bg:#FFFFFF; --soft:#F5F8FA; --soft-2:#EBF1F5;
  --accent:#0C74B8; --accent-d:#095B90; --accent-l:#E7F2FA;
  --cyan:#17B6D9;
  --cta:#FF6A13; --cta-d:#E85C08;
  --ok:#188F62; --err:#C0392B;
  --r:3px; --maxw:1220px;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --sh-1:0 1px 2px rgba(10,24,38,.06),0 2px 8px rgba(10,24,38,.05);
  --sh-2:0 8px 28px rgba(10,24,38,.10),0 2px 6px rgba(10,24,38,.06);
}

body{font-family:var(--sans);font-size:16px;line-height:1.65;color:var(--body);background:var(--bg);
     -webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,h4{color:var(--ink);line-height:1.15;letter-spacing:-.02em;font-weight:700}
h1{font-size:clamp(32px,4.2vw,52px);letter-spacing:-.03em}
h2{font-size:clamp(26px,2.9vw,38px)}
h3{font-size:clamp(19px,1.5vw,22px);letter-spacing:-.01em}
h4{font-size:16px;letter-spacing:0}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
strong{color:var(--ink);font-weight:650}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.sec{padding:84px 0}
.sec-sm{padding:56px 0}
.sec-soft{background:var(--soft)}
.sec-dark{background:var(--ink);color:rgba(255,255,255,.76)}
.sec-dark h1,.sec-dark h2,.sec-dark h3,.sec-dark h4{color:#fff}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:999;background:#fff;padding:10px 16px;border:2px solid var(--accent)}

/* ---------- eyebrow / heads ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--cta)}
.sec-dark .eyebrow{color:var(--cyan)}
.head{max-width:760px;margin-bottom:44px}
.head p{font-size:17px;color:var(--steel);margin-top:14px}
.sec-dark .head p{color:rgba(255,255,255,.66)}
.head-c{margin-left:auto;margin-right:auto;text-align:center}
.lead{font-size:18px;color:var(--steel);line-height:1.7}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 26px;border-radius:var(--r);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:.18s ease;white-space:nowrap;
  letter-spacing:.01em}
.btn svg{width:16px;height:16px;flex:none}
.btn-cta{background:var(--cta);color:#fff;box-shadow:0 2px 0 var(--cta-d)}
.btn-cta:hover{background:var(--cta-d);transform:translateY(-1px);box-shadow:0 4px 12px rgba(255,106,19,.32)}
.btn-solid{background:var(--accent);color:#fff}
.btn-solid:hover{background:var(--accent-d)}
.btn-line{border-color:var(--line-2);color:var(--ink);background:#fff}
.btn-line:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-l)}
.btn-glass{border-color:rgba(255,255,255,.32);color:#fff;background:rgba(255,255,255,.04)}
.btn-glass:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-row{display:flex;flex-wrap:wrap;gap:14px}
.link-a{display:inline-flex;align-items:center;gap:7px;color:var(--accent);font-weight:600;font-size:15px}
.link-a::after{content:"→";transition:.18s}
.link-a:hover::after{transform:translateX(4px)}

/* ---------- top bar ---------- */
.topbar{background:var(--ink);color:var(--steel-2);font-size:13px;border-bottom:1px solid rgba(255,255,255,.07)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:38px;gap:20px}
.topbar ul{display:flex;gap:22px;align-items:center}
.topbar li{display:flex;align-items:center;gap:7px;white-space:nowrap}
.topbar svg{width:14px;height:14px;opacity:.7;flex:none}
.topbar a:hover{color:#fff}
.tb-hide{display:flex;gap:22px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:120;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s}
.site-header.is-stuck{box-shadow:var(--sh-1)}
.hd{display:flex;align-items:center;justify-content:space-between;height:74px;gap:24px}
.logo{display:flex;align-items:center;gap:11px}
.logo svg{width:34px;height:34px}
.logo-tx b{display:block;font-size:19px;font-weight:800;color:var(--ink);letter-spacing:-.02em;line-height:1.1}
.logo-tx span{display:block;font-size:9.5px;letter-spacing:.19em;text-transform:uppercase;color:var(--steel);font-weight:600}

.nav{display:flex;align-items:center;gap:2px}
.nav > li{position:relative}
.nav > li > a,.nav > li > span{display:flex;align-items:center;gap:6px;padding:26px 14px;font-size:15px;font-weight:550;
  color:var(--ink);cursor:pointer;border-bottom:2px solid transparent;transition:.15s}
.nav > li:hover > a,.nav > li:hover > span,.nav > li.active > a{color:var(--accent);border-bottom-color:var(--accent)}
.caret{width:9px;height:9px;opacity:.5}
.drop{position:absolute;top:100%;left:-8px;min-width:290px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--sh-2);border-radius:var(--r);padding:8px;opacity:0;visibility:hidden;transform:translateY(6px);
  transition:.16s ease;border-top:2px solid var(--cta)}
.nav > li:hover .drop,.nav > li:focus-within .drop{opacity:1;visibility:visible;transform:translateY(0)}
.drop a{display:block;padding:10px 13px;border-radius:var(--r);font-size:14.5px;color:var(--ink);font-weight:550}
.drop a small{display:block;font-size:12.5px;color:var(--steel);font-weight:400;margin-top:1px}
.drop a:hover{background:var(--soft);color:var(--accent)}
.hd-cta{display:flex;align-items:center;gap:12px}

.burger{display:none;width:44px;height:44px;align-items:center;justify-content:center;background:none;
  border:1px solid var(--line);border-radius:var(--r);cursor:pointer}
.burger span{display:block;width:19px;height:2px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:19px;height:2px;background:var(--ink);transition:.2s}
.burger span::before{top:-6px}.burger span::after{top:6px}
body.nav-open .burger span{background:transparent}
body.nav-open .burger span::before{top:0;transform:rotate(45deg)}
body.nav-open .burger span::after{top:0;transform:rotate(-45deg)}

.mobile-nav{position:fixed;inset:112px 0 0;background:#fff;z-index:110;overflow-y:auto;padding:8px 0 60px;
  transform:translateX(100%);transition:transform .24s ease;visibility:hidden}
body.nav-open .mobile-nav{transform:none;visibility:visible}
body.nav-open{overflow:hidden}
.mobile-nav a,.mobile-nav button{display:flex;width:100%;align-items:center;justify-content:space-between;
  padding:15px 24px;font-size:16px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line);
  background:none;border-left:0;border-right:0;border-top:0;text-align:left;cursor:pointer}
.m-group ul{display:none;background:var(--soft)}
.m-group.open ul{display:block}
.m-group ul a{font-weight:450;font-size:15px;padding-left:38px;color:var(--steel)}
.m-group > button::after{content:"+";font-size:20px;color:var(--steel)}
.m-group.open > button::after{content:"−"}
.m-cta{padding:22px 24px}
.m-cta .btn{width:100%}

/* ---------- hero ---------- */
.hero{position:relative;background:linear-gradient(155deg,#071320 0%,#0E2740 48%,#134064 100%);overflow:hidden;color:#fff}
.hero::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;mask-image:radial-gradient(120% 90% at 15% 20%,#000 20%,transparent 75%)}
.hero::after{content:"";position:absolute;width:620px;height:620px;right:-140px;top:-190px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,182,217,.20),transparent 66%)}
.hero .wrap{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center;padding:88px 0 78px}
.hero h1{color:#fff;margin-bottom:20px}
.hero .sub{font-size:18.5px;line-height:1.62;color:rgba(255,255,255,.74);max-width:580px;margin-bottom:30px}
.hero .eyebrow{color:var(--cyan)}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.trust{display:flex;flex-wrap:wrap;gap:10px 26px;padding-top:26px;border-top:1px solid rgba(255,255,255,.13)}
.trust li{display:flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.66);font-weight:500}
.trust li::before{content:"";width:6px;height:6px;background:var(--cta);flex:none}
.hero-art{position:relative}

/* stats bar */
.stats{border-top:1px solid rgba(255,255,255,.11);background:rgba(0,0,0,.20);position:relative;z-index:2}
.stats-g{display:grid;grid-template-columns:repeat(4,1fr)}
.stats-g div{padding:26px 10px 28px;text-align:center;border-right:1px solid rgba(255,255,255,.09)}
.stats-g div:last-child{border-right:0}
.stats-g b{display:block;font-size:30px;font-weight:800;color:#fff;letter-spacing:-.03em;font-family:var(--mono)}
.stats-g span{font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.55);font-weight:600}

/* ---------- capability cards ---------- */
.grid{display:grid;gap:22px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}

.cap{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px 26px 28px;position:relative;
  transition:.2s ease;overflow:hidden}
.cap::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:.24s}
.cap:hover{border-color:var(--line-2);box-shadow:var(--sh-2);transform:translateY(-3px)}
.cap:hover::before{transform:scaleX(1)}
.cap .ico{width:48px;height:48px;border-radius:var(--r);background:var(--accent-l);color:var(--accent);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.cap .ico svg{width:25px;height:25px}
.cap h3{margin-bottom:9px}
.cap p{font-size:14.7px;color:var(--steel);line-height:1.62;margin-bottom:16px}
.cap ul{display:flex;flex-direction:column;gap:6px;margin-bottom:18px}
.cap ul li{font-size:13.5px;color:var(--body);padding-left:16px;position:relative}
.cap ul li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;background:var(--cta)}
.cap .num{position:absolute;right:18px;top:14px;font-family:var(--mono);font-size:12px;color:var(--line-2);font-weight:700}

/* ---------- product cards ---------- */
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;
  flex-direction:column;transition:.2s ease}
.pcard:hover{box-shadow:var(--sh-2);border-color:var(--line-2);transform:translateY(-3px)}
.pcard .thumb{background:linear-gradient(150deg,#0B1B2B,#16344F);position:relative;overflow:hidden}
.pcard .thumb svg{width:100%;height:auto;display:block}
.pcard .tag{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.11);backdrop-filter:blur(6px);
  border:1px solid rgba(255,255,255,.2);color:#fff;font-size:11px;font-weight:700;letter-spacing:.09em;
  text-transform:uppercase;padding:5px 10px;border-radius:2px}
.pcard .body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.pcard h3{margin-bottom:8px;font-size:19px}
.pcard .desc{font-size:14.5px;color:var(--steel);line-height:1.6;margin-bottom:16px;flex:1}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:18px}
.chips span{font-family:var(--mono);font-size:11.5px;background:var(--soft-2);color:var(--ink-3);
  padding:4px 9px;border-radius:2px;border:1px solid var(--line)}

/* ---------- category strip ---------- */
.catrow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);background:#fff}
.catrow a{padding:26px 22px;border-right:1px solid var(--line);transition:.18s;position:relative}
.catrow a:last-child{border-right:0}
.catrow a:hover{background:var(--soft)}
.catrow .k{font-family:var(--mono);font-size:11.5px;color:var(--cta);font-weight:700;letter-spacing:.08em}
.catrow h4{margin:8px 0 6px;font-size:17px}
.catrow p{font-size:13.5px;color:var(--steel);line-height:1.55;margin:0}

/* ---------- split / feature ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-art{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:linear-gradient(150deg,#0B1B2B,#16344F)}

.flist{display:flex;flex-direction:column;gap:2px}
.flist li{display:flex;gap:16px;padding:17px 0;border-bottom:1px solid var(--line)}
.flist li:last-child{border-bottom:0}
.flist .n{font-family:var(--mono);font-size:12px;font-weight:700;color:var(--cta);padding-top:3px;flex:none;width:26px}
.flist h4{margin-bottom:4px;font-size:16.5px}
.flist p{font-size:14.5px;color:var(--steel);line-height:1.6;margin:0}

/* ---------- spec table ---------- */
.spec{width:100%;border-collapse:collapse;border:1px solid var(--line);background:#fff}
.spec caption{text-align:left;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--steel);padding:0 0 12px}
.spec tr{border-bottom:1px solid var(--line)}
.spec tr:last-child{border-bottom:0}
.spec tr:nth-child(even){background:var(--soft)}
.spec th{text-align:left;padding:13px 18px;font-size:12.5px;font-weight:700;letter-spacing:.05em;
  text-transform:uppercase;color:var(--steel);width:34%;vertical-align:top;border-right:1px solid var(--line)}
.spec td{padding:13px 18px;font-family:var(--mono);font-size:13.5px;color:var(--ink);line-height:1.6}
.tbl-wrap{overflow-x:auto}

/* ---------- app cards ---------- */
.acard{position:relative;border:1px solid var(--line);border-radius:var(--r);background:#fff;overflow:hidden;
  display:flex;flex-direction:column;transition:.2s}
.acard:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.acard .top{height:6px;background:linear-gradient(90deg,var(--accent),var(--cyan))}
.acard .in{padding:26px 24px 26px;display:flex;flex-direction:column;flex:1}
.acard .ico{width:44px;height:44px;color:var(--accent);margin-bottom:16px}
.acard h3{font-size:19px;margin-bottom:9px}
.acard p{font-size:14.5px;color:var(--steel);line-height:1.62;margin-bottom:16px;flex:1}

/* ---------- process ---------- */
.proc{display:grid;grid-template-columns:repeat(5,1fr);gap:0;counter-reset:s}
.proc li{position:relative;padding:0 20px 0 0}
.proc li::after{content:"";position:absolute;left:0;top:19px;right:0;height:1px;background:var(--line-2)}
.proc li:last-child::after{right:20px}
.proc .dot{position:relative;z-index:2;width:38px;height:38px;border-radius:50%;background:#fff;
  border:1px solid var(--line-2);display:flex;align-items:center;justify-content:center;font-family:var(--mono);
  font-size:13px;font-weight:700;color:var(--accent);margin-bottom:16px}
.proc li.hi .dot{background:var(--cta);border-color:var(--cta);color:#fff}
.proc h4{margin-bottom:6px;font-size:16px}
.proc p{font-size:13.8px;color:var(--steel);line-height:1.58;margin:0;padding-right:14px}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(120deg,#0A1826,#153c5e);color:#fff;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.035) 0 2px,transparent 2px 12px)}
.cta-in{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px;padding:52px 0}
.cta-in h2{font-size:clamp(23px,2.4vw,31px);margin-bottom:10px}
.cta-in p{color:rgba(255,255,255,.7);margin:0;font-size:16px;max-width:640px}

/* ---------- form ---------- */
.formbox{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:34px;box-shadow:var(--sh-1)}
.formbox.on-dark{border-color:rgba(255,255,255,.14)}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.f{display:flex;flex-direction:column;gap:7px}
.f.full{grid-column:1/-1}
.f label{font-size:12.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--steel)}
.f label i{color:var(--cta);font-style:normal}
.f input,.f select,.f textarea{padding:12px 14px;border:1px solid var(--line-2);border-radius:var(--r);
  font-size:15px;background:#fff;transition:.15s;width:100%;font-family:inherit}
.f textarea{min-height:118px;resize:vertical}
.f input:focus,.f select:focus,.f textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-l)}
.f .is-bad{border-color:var(--err);background:#FDF3F2}
.form-note{margin-top:14px;font-size:14px;padding:11px 14px;border-radius:var(--r);display:none}
.form-note.is-ok{display:block;background:#EAF7F1;color:var(--ok);border:1px solid #BEE6D4}
.form-note.is-err{display:block;background:#FDF0EE;color:var(--err);border:1px solid #F3C9C3}
.f-hint{font-size:12.8px;color:var(--steel);margin-top:14px;line-height:1.55}

/* ---------- breadcrumb / page head ---------- */
.phead{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.phead::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:48px 48px;
  mask-image:radial-gradient(110% 100% at 80% 0%,#000 10%,transparent 70%)}
.phead .wrap{position:relative;z-index:2;padding:44px 0 52px}
.phead h1{color:#fff;max-width:900px;font-size:clamp(28px,3.4vw,44px)}
.phead p{color:rgba(255,255,255,.7);max-width:720px;margin-top:16px;font-size:17px}
.crumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:rgba(255,255,255,.55);margin-bottom:18px}
.crumb a:hover{color:#fff}
.crumb span{opacity:.45}

/* ---------- product detail ---------- */
.pd-top{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start}
.pd-art{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:linear-gradient(150deg,#0B1B2B,#16344F);position:sticky;top:98px}
.pd-meta{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line);margin:22px 0 26px}
.pd-meta div{display:flex;justify-content:space-between;gap:20px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14.5px}
.pd-meta dt{color:var(--steel);font-size:12.5px;letter-spacing:.05em;text-transform:uppercase;font-weight:700}
.pd-meta dd{margin:0;font-family:var(--mono);font-size:13.5px;color:var(--ink);text-align:right}

.anchors{position:sticky;top:74px;z-index:60;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.anchors ul{display:flex;gap:2px;overflow-x:auto;scrollbar-width:none}
.anchors ul::-webkit-scrollbar{display:none}
.anchors a{display:block;padding:15px 18px;font-size:14px;font-weight:600;color:var(--steel);white-space:nowrap;
  border-bottom:2px solid transparent}
.anchors a:hover{color:var(--accent);border-bottom-color:var(--accent)}

.plist{display:grid;grid-template-columns:1fr 1fr;gap:10px 28px}
.plist li{display:flex;gap:11px;font-size:15px;line-height:1.6;padding:8px 0}
.plist li svg{width:17px;height:17px;color:var(--ok);flex:none;margin-top:4px}

.tagcloud{display:flex;flex-wrap:wrap;gap:9px}
.tagcloud span{border:1px solid var(--line-2);background:#fff;padding:8px 15px;border-radius:100px;font-size:14px;
  color:var(--ink-3);font-weight:550}

/* ---------- misc ---------- */
.note{border-left:3px solid var(--cta);background:var(--soft);padding:16px 20px;font-size:14.5px;color:var(--body)}
.kv{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.kv div{background:#fff;padding:22px}
.kv b{display:block;font-family:var(--mono);font-size:24px;color:var(--accent);font-weight:800;letter-spacing:-.02em}
.kv span{font-size:13.5px;color:var(--steel)}

.faq details{border:1px solid var(--line);border-radius:var(--r);background:#fff;margin-bottom:10px}
.faq summary{padding:17px 20px;font-weight:650;color:var(--ink);cursor:pointer;list-style:none;display:flex;
  justify-content:space-between;gap:16px;font-size:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent);font-size:20px;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq .ans{padding:0 20px 18px;font-size:15px;color:var(--steel);line-height:1.68}

/* ---------- footer ---------- */
.foot{background:var(--ink);color:var(--steel-2);padding:62px 0 0;font-size:14.5px}
.foot-g{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:46px}
.foot h4{color:#fff;font-size:13px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:18px}
.foot ul{display:flex;flex-direction:column;gap:10px}
.foot a:hover{color:#fff}
.foot .about p{font-size:14.5px;line-height:1.7;color:var(--steel-2);margin-bottom:18px;max-width:330px}
.foot .logo-tx b{color:#fff}
.foot .logo-tx span{color:var(--steel)}
.foot .logo{margin-bottom:18px}
.certs{display:flex;flex-wrap:wrap;gap:8px}
.certs span{border:1px solid rgba(255,255,255,.16);padding:4px 10px;font-size:11.5px;letter-spacing:.07em;
  font-family:var(--mono);color:var(--steel-2)}
.foot-b{border-top:1px solid rgba(255,255,255,.09);padding:20px 0;display:flex;justify-content:space-between;
  gap:20px;flex-wrap:wrap;font-size:13px;color:var(--steel)}
.foot-b ul{flex-direction:row;gap:22px}

.to-top{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:var(--r);background:var(--ink);
  color:#fff;border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;
  pointer-events:none;transition:.2s;z-index:90;box-shadow:var(--sh-2)}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{background:var(--accent)}

/* ---------- reveal ---------- */
.reveal{opacity:1;transform:none;transition:opacity .55s ease,transform .55s ease}
.js .reveal{opacity:0;transform:translateY(16px)}
.js .reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .js .reveal,.reveal{opacity:1;transform:none}
}

/* ---------- SEO table page ---------- */
.seotbl{width:100%;border-collapse:collapse;font-size:13.5px;background:#fff;border:1px solid var(--line)}
.seotbl th{background:var(--ink);color:#fff;text-align:left;padding:12px 14px;font-size:12px;letter-spacing:.08em;
  text-transform:uppercase;white-space:nowrap}
.seotbl td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.55}
.seotbl tr:nth-child(even) td{background:var(--soft)}
.seotbl code{font-family:var(--mono);font-size:12.5px;color:var(--accent);background:var(--accent-l);padding:2px 6px;
  border-radius:2px;white-space:nowrap}
.seotbl .len{font-family:var(--mono);font-size:11.5px;color:var(--steel)}

/* ---------- articles / insights ---------- */
.acard.art-card{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff;
  display:flex;flex-direction:column;transition:.2s ease}
.acard.art-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.ac-cover{aspect-ratio:16/9;background:linear-gradient(150deg,#0B1B2B,#16344F);overflow:hidden}
.ac-cover img{width:100%;height:100%;object-fit:cover}
.ac-placeholder{height:100%;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.5)}
.ac-placeholder svg{width:46px;height:46px}
.ac-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.ac-cat{font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--cta)}
.ac-date{font-size:13px;color:var(--steel);margin:6px 0 10px}
.ac-sum{font-size:14.5px;color:var(--steel);line-height:1.6;margin-bottom:16px;flex:1}

.article-body{max-width:760px;margin:0 auto;font-size:17px;line-height:1.8;color:var(--body)}
.article-body h2{font-size:clamp(22px,2.2vw,30px);margin:38px 0 14px}
.article-body h3{font-size:21px;margin:28px 0 10px}
.article-body p{margin:0 0 18px}
.article-body ul.ab-list{margin:0 0 20px;padding-left:22px;list-style:disc}
.article-body ul.ab-list li{margin:0 0 9px;line-height:1.7}
.article-body blockquote{border-left:3px solid var(--cta);background:var(--soft);padding:16px 20px;
  margin:0 0 20px;font-size:16.5px;color:var(--ink)}
.article-meta{display:flex;flex-wrap:wrap;gap:14px;align-items:center;font-size:13.5px;color:var(--steel);margin:16px 0 28px}
.article-cover{margin:0 0 30px;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  background:linear-gradient(150deg,#0B1B2B,#16344F)}
.article-cover img{width:100%;height:auto;display:block}
.art-img{width:100%;height:auto;display:block}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .foot-g{grid-template-columns:1fr 1fr;gap:36px}
  .hero-grid{gap:36px}
  .g-4{grid-template-columns:repeat(2,1fr)}
  .catrow{grid-template-columns:repeat(2,1fr)}
  .catrow a:nth-child(2n){border-right:0}
  .catrow a:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .proc{grid-template-columns:repeat(3,1fr);gap:28px 0}
  .proc li::after{display:none}
}
@media (max-width:980px){
  .nav,.hd-cta .btn{display:none}
  .burger{display:flex}
  .hero-grid{grid-template-columns:1fr;padding:56px 0 52px}
  .hero-art{order:-1;max-width:520px}
  .split,.pd-top{grid-template-columns:1fr;gap:34px}
  .pd-art{position:static}
  .stats-g{grid-template-columns:repeat(2,1fr)}
  .stats-g div:nth-child(2n){border-right:0}
  .stats-g div:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.09)}
  .cta-in{flex-direction:column;align-items:flex-start;padding:42px 0}
  .tb-hide{display:none}
  .kv{grid-template-columns:1fr}
}
@media (max-width:720px){
  .sec{padding:56px 0}
  .g-2,.g-3,.g-4{grid-template-columns:1fr}
  .catrow{grid-template-columns:1fr}
  .catrow a{border-right:0;border-bottom:1px solid var(--line)}
  .fgrid{grid-template-columns:1fr}
  .plist{grid-template-columns:1fr}
  .proc{grid-template-columns:1fr;gap:22px}
  .formbox{padding:24px 20px}
  .spec th{width:42%;font-size:11.5px;padding:11px 12px}
  .spec td{padding:11px 12px;font-size:12.8px}
  .foot-g{grid-template-columns:1fr}
  .mobile-nav{inset:74px 0 0}
  .hero h1{font-size:31px}
}