:root{
  --navy:#0B1E3F; --navy-2:#13294F; --ink:#14181F; --slate:#4B5565; --muted:#586273;
  --line:#D9DEE5; --line-dark:rgba(255,255,255,.16); --bg-alt:#F4F6F9; --white:#fff;
  --accent:#0B6C80; --accent-2:#3DB8CE; --err:#B3261E; --ok:#1B6E3C;
  --maxw:1180px; --r:2px;
  --f-head:'Space Grotesk','Helvetica Neue',Arial,sans-serif;
  --f-body:'Inter','Helvetica Neue',Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{font-family:var(--f-body);font-size:16px;line-height:1.65;color:var(--ink);background:#fff;overflow-x:hidden}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--f-head);color:var(--navy);line-height:1.15;font-weight:600;letter-spacing:-.01em}
p{color:var(--slate)}
:focus-visible{outline:3px solid var(--accent-2);outline-offset:2px}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--navy);color:#fff;padding:10px 18px;font-size:14px;font-weight:600;z-index:9999}
.skip-link:focus{left:0}
.eyebrow{display:block;font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.on-dark .eyebrow{color:var(--accent-2)}

/* header */
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo{display:flex;flex-direction:column;line-height:1}
.logo-word{font-family:var(--f-head);font-size:20px;font-weight:700;letter-spacing:.02em;color:var(--navy)}
.logo-word span{font-weight:400;color:#586275}
.logo-tag{font-size:9px;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);margin-top:5px;font-weight:600}
.nav ul{display:flex;gap:30px;list-style:none}
.nav a{font-size:14px;font-weight:500;color:var(--slate);padding:6px 0;border-bottom:2px solid transparent}
.nav a:hover{color:var(--navy)}
.nav a[aria-current="page"]{color:var(--navy);border-bottom-color:var(--accent)}
.nav-right{display:flex;align-items:center;gap:14px}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:var(--r);padding:9px 10px;cursor:pointer;flex-direction:column;gap:4px}
.burger span{width:20px;height:2px;background:var(--navy);display:block}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:600 14px var(--f-body);padding:13px 22px;border:1.5px solid transparent;border-radius:var(--r);cursor:pointer;transition:background .2s,color .2s,border-color .2s;text-align:center}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:var(--accent)}
.btn-outline{border-color:var(--navy);color:var(--navy);background:transparent}
.btn-outline:hover{background:var(--navy);color:#fff}
.on-dark .btn-primary{background:#fff;color:var(--navy)}
.on-dark .btn-primary:hover{background:var(--accent-2);color:var(--navy)}
.on-dark .btn-outline{border-color:rgba(255,255,255,.6);color:#fff}
.on-dark .btn-outline:hover{background:#fff;color:var(--navy)}
.btn-sm{padding:10px 16px;font-size:13px}

/* hero */
.hero{background:var(--navy);color:#fff;padding:84px 0 76px}
.hero h1{color:#fff;font-size:clamp(34px,4.8vw,58px);max-width:17ch;margin-bottom:22px}
.hero p{color:#C9D3E3;font-size:18px;max-width:54ch}
.hero-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:64px;align-items:center}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.catalog-panel{border:1px solid var(--line-dark);padding:26px 26px 20px}
.catalog-panel h2{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-2);font-family:var(--f-body);font-weight:600;margin-bottom:6px}
.catalog-panel table{width:100%;border-collapse:collapse;margin-top:8px}
.catalog-panel td{padding:12px 0;border-top:1px solid var(--line-dark);font-size:14.5px;color:#fff;vertical-align:baseline}
.catalog-panel td:last-child{text-align:right;color:#C9D3E3;font-variant-numeric:tabular-nums;white-space:nowrap}
.catalog-panel tr:first-child td{border-top:none}
.catalog-panel .total td{font-weight:600;border-top:1px solid rgba(255,255,255,.4)}
.catalog-panel p{font-size:13px;color:#9FB0C9;margin-top:14px}
.fact-strip{background:var(--bg-alt);border-bottom:1px solid var(--line)}
.fact-strip ul{display:grid;grid-template-columns:repeat(4,1fr);list-style:none}
.fact-strip li{padding:20px 22px;border-left:1px solid var(--line);font-size:14px;color:var(--slate)}
.fact-strip li:first-child{border-left:none;padding-left:0}
.fact-strip strong{display:block;color:var(--navy);font-family:var(--f-head);font-size:15px;margin-bottom:2px}

/* sections */
.section{padding:88px 0}
.section.alt{background:var(--bg-alt)}
.section.dark{background:var(--navy);color:#fff}
.section.dark h2,.section.dark h3{color:#fff}.section.dark p{color:#C9D3E3}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-head h2{font-size:clamp(26px,3.2vw,38px);margin-bottom:14px}
.sec-head p{font-size:17px}
.page-hero{background:var(--bg-alt);border-bottom:1px solid var(--line);padding:64px 0 52px}
.page-hero h1{font-size:clamp(30px,4vw,46px);max-width:22ch;margin-bottom:16px}
.page-hero p{font-size:18px;max-width:64ch}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}

/* category rows */
.cat-list{border-top:1px solid var(--line)}
.cat-row{display:grid;grid-template-columns:70px 1.1fr 1.6fr auto;gap:28px;align-items:start;padding:30px 0;border-bottom:1px solid var(--line)}
.cat-num{font-family:var(--f-head);font-size:14px;color:var(--accent);font-weight:600;padding-top:4px}
.cat-row h3{font-size:22px}
.cat-row p{font-size:15.5px}
.cat-row .meta{font-size:13px;color:var(--muted);margin-top:8px}
.link-arrow{font-weight:600;font-size:14px;color:var(--navy);border-bottom:2px solid var(--accent);padding-bottom:2px;white-space:nowrap}
.link-arrow:hover{color:var(--accent)}

/* two-col / lists */
.cols-2{display:grid;grid-template-columns:1fr 1fr;gap:56px}
.cols-3{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line)}
.cols-3>div{padding:26px 28px 26px 0;border-bottom:1px solid var(--line)}
.cols-3 h3{font-size:18px;margin-bottom:8px}
.cols-3 p{font-size:15px}
.dark .cols-3,.dark .cols-3>div{border-color:var(--line-dark)}
.check-list{list-style:none;display:grid;gap:12px}
.check-list li{position:relative;padding-left:26px;font-size:15.5px;color:var(--slate)}
.check-list li::before{content:"";position:absolute;left:0;top:.6em;width:12px;height:2px;background:var(--accent)}
.check-list strong{color:var(--navy)}

/* steps */
.steps{list-style:none;counter-reset:s;border-top:1px solid var(--line)}
.steps li{counter-increment:s;display:grid;grid-template-columns:64px 1fr;gap:18px;padding:24px 0;border-bottom:1px solid var(--line)}
.steps li::before{content:counter(s,decimal-leading-zero);font-family:var(--f-head);color:var(--accent);font-weight:600;font-size:15px;padding-top:3px}
.steps h3{font-size:19px;margin-bottom:6px}
.steps p{font-size:15.5px}

/* tables */
.table-scroll{overflow-x:auto;border:1px solid var(--line);background:#fff}
table.data{width:100%;border-collapse:collapse;font-size:14.5px}
table.data th{background:var(--navy);color:#fff;text-align:left;font-weight:600;padding:12px 16px;font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;white-space:nowrap}
table.data td{padding:12px 16px;border-top:1px solid var(--line);vertical-align:top;color:var(--slate)}
table.data td:first-child{color:var(--navy);font-weight:600}
table.data tbody tr:nth-child(even){background:#FAFBFC}
.pn{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13.5px;color:var(--navy);font-weight:600}
.tag{display:inline-block;font-size:12px;font-weight:600;color:var(--navy);border:1px solid var(--line);padding:2px 8px;border-radius:var(--r);background:#fff;white-space:nowrap}
.tag.prelim{border-color:#C98A00;color:#7A5300;background:#FFF8E6}

/* product sections */
.prod{padding:72px 0;border-top:1px solid var(--line)}
.prod:first-of-type{border-top:none}
.prod-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:30px}
.prod-head h2{font-size:clamp(26px,3vw,34px)}
.prod h3{font-size:16px;margin-bottom:10px;font-family:var(--f-body);font-weight:600;letter-spacing:0}
.prod-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:44px;margin-bottom:34px}
.prod-lead{font-size:17px;max-width:70ch;margin-bottom:30px}
.subnav{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.subnav a{font-size:13.5px;font-weight:600;color:var(--navy);border:1px solid var(--line);background:#fff;padding:8px 14px;border-radius:var(--r)}
.subnav a:hover{border-color:var(--accent);color:var(--accent)}

/* datasheet browser */
.tools{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:0 0 18px}
.tools input[type=search]{flex:1 1 260px;font:400 15px var(--f-body);padding:12px 14px;border:1px solid var(--line);border-radius:var(--r);min-width:0}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font:600 13px var(--f-body);padding:9px 14px;border:1px solid var(--line);background:#fff;color:var(--navy);cursor:pointer;border-radius:var(--r)}
.chip[aria-pressed="true"]{background:var(--navy);color:#fff;border-color:var(--navy)}
.count{font-size:13.5px;color:var(--muted);margin-bottom:10px}
.dl-btn{font:600 13px var(--f-body);color:var(--navy);background:#fff;border:1.5px solid var(--navy);padding:7px 12px;cursor:pointer;border-radius:var(--r);white-space:nowrap}
.dl-btn:hover{background:var(--navy);color:#fff}
.empty{padding:28px;border:1px dashed var(--line);text-align:center;display:none}

/* modal */
.modal{position:fixed;inset:0;background:rgba(11,30,63,.6);display:none;align-items:center;justify-content:center;z-index:2000;padding:20px}
.modal.open{display:flex}
.modal-card{background:#fff;max-width:420px;width:100%;padding:30px;position:relative;border-radius:var(--r)}
.modal-card h2{font-size:21px;margin-bottom:8px}
.modal-close{position:absolute;top:10px;right:14px;background:none;border:none;font-size:26px;line-height:1;cursor:pointer;color:var(--slate);padding:6px}

/* forms */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:600;color:var(--navy)}
.field .opt{font-weight:400;color:var(--muted)}
.field input,.field select,.field textarea{font:400 15px var(--f-body);padding:12px 14px;border:1px solid #AEB7C4;border-radius:var(--r);background:#fff;color:var(--ink);width:100%}
.field textarea{min-height:130px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:3px solid var(--accent-2);outline-offset:0;border-color:var(--accent)}
.field [aria-invalid="true"]{border-color:var(--err);background:#FFF6F5}
.err-msg{font-size:13px;color:var(--err);min-height:0}
.hint{font-size:13px;color:var(--muted)}
details.tech{border:1px solid var(--line);padding:0;margin:4px 0}
details.tech summary{cursor:pointer;padding:14px 16px;font-weight:600;color:var(--navy);font-size:15px}
details.tech .form-grid{padding:4px 16px 18px}
.alert{padding:16px 18px;border-left:4px solid;font-size:15px;display:none;margin-bottom:18px}
.alert.show{display:block}
.alert.ok{border-color:var(--ok);background:#EFF8F2;color:#14472A}
.alert.bad{border-color:var(--err);background:#FFF1F0;color:#6F1712}
.alert a{text-decoration:underline;font-weight:600}
.hp{position:absolute;left:-9999px;opacity:0}

/* cta band */
.cta-band{background:var(--navy);padding:64px 0}
.cta-band .inner{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);max-width:24ch}
.cta-band p{color:#C9D3E3;margin-top:10px;max-width:56ch}

/* footer */
.site-footer{background:#0A1830;color:#AEBBD0;padding:60px 0 28px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .logo-word{color:#fff}.site-footer .logo-word span{color:#AEBBD0}
.site-footer h2{font-family:var(--f-body);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#fff;margin-bottom:14px;font-weight:600}
.site-footer ul{list-style:none;display:grid;gap:9px}
.site-footer a:hover{color:#fff}
.site-footer p{color:#AEBBD0;font-size:13.5px;margin-top:14px;max-width:34ch}
.foot-bottom{margin-top:44px;padding-top:20px;border-top:1px solid var(--line-dark);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12.5px;color:#8696B0}
.legal{max-width:760px}.legal h2{font-size:15px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);margin:32px 0 8px;font-family:var(--f-body)}
.legal p{margin-bottom:8px}.legal a{color:var(--navy);text-decoration:underline}

@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .cat-row{grid-template-columns:50px 1fr;gap:12px 18px}
  .cat-row>div:nth-child(3),.cat-row>div:nth-child(4){grid-column:2}
  .cols-2,.prod-grid{grid-template-columns:1fr;gap:30px}
  .cols-3{grid-template-columns:1fr}
  .fact-strip ul{grid-template-columns:1fr 1fr}
  .fact-strip li:nth-child(3){border-left:none;padding-left:0}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:820px){
  .burger{display:flex}
  .nav{position:absolute;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);display:none}
  .nav.open{display:block}
  .nav ul{flex-direction:column;gap:0;padding:8px 28px 16px}
  .nav li a{display:block;padding:14px 0;border-bottom:1px solid var(--line)}
  .nav-right .btn{display:none}
  .section{padding:60px 0}.hero{padding:56px 0 52px}.hero p{font-size:16.5px}
  .form-grid{grid-template-columns:1fr}
  /* datasheet table -> stacked rows on small screens */
  table.stack thead{position:absolute;left:-9999px}
  table.stack,table.stack tbody,table.stack tr,table.stack td{display:block;width:100%}
  table.stack tr{padding:12px 14px;border-top:1px solid var(--line)}
  table.stack td{border:none;padding:3px 0}
  table.stack td::before{content:attr(data-label);display:inline-block;min-width:96px;font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:600}
  table.stack td.act::before{content:none}
}
@media (max-width:520px){
  .wrap{padding:0 20px}
  .fact-strip ul{grid-template-columns:1fr}.fact-strip li{border-left:none;padding-left:0;border-top:1px solid var(--line)}
  .foot-grid{grid-template-columns:1fr}
  .cta-row .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}