:root{
  --ink:#0d1b2a; --ink-2:#33455c; --muted:#64748b;
  --line:#e2e8f0; --line-2:#cbd5e1;
  --bg:#ffffff; --bg-2:#f6f8fb; --bg-3:#eef3f9;
  --brand:#0b5fa5; --brand-2:#0e7ac4; --brand-ink:#083f6e;
  --accent:#16a34a;
  --radius:10px;
  --wrap:1180px;
  --shadow:0 1px 2px rgba(13,27,42,.05),0 8px 24px rgba(13,27,42,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.65 "Inter","Segoe UI",Roboto,-apple-system,"Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.25;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(1.9rem,3.6vw,2.7rem)}
h2{font-size:clamp(1.35rem,2.4vw,1.8rem)}
h3{font-size:1.1rem}
p{margin:0 0 1em}

/* header */
.site-head{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.head-in{display:flex;align-items:center;gap:24px;height:68px}
.logo{display:flex;align-items:center;gap:11px;font-weight:700;color:var(--ink);
  font-size:1.02rem;letter-spacing:-.02em;white-space:nowrap}
.logo:hover{text-decoration:none}
.logo-mark{width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
  display:grid;place-items:center;color:#fff;flex:none}
.logo-mark svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:2.2;
  stroke-linecap:round;stroke-linejoin:round}
.logo small{display:block;font-weight:500;font-size:.68rem;color:var(--muted);letter-spacing:.04em;
  text-transform:uppercase;margin-top:1px}
nav.main{margin-left:auto;display:flex;gap:4px;flex-wrap:wrap}
nav.main a{padding:8px 12px;border-radius:7px;color:var(--ink-2);font-size:.9rem;font-weight:500}
nav.main a:hover{background:var(--bg-3);color:var(--brand-ink);text-decoration:none}
nav.main a.active{color:var(--brand);background:var(--bg-3)}
.nav-toggle{display:none}

/* hero */
.hero{background:linear-gradient(160deg,#0d1b2a 0%,#123456 55%,#0b5fa5 100%);color:#fff;
  padding:40px 0 32px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;inset:auto -10% -60% 55%;height:420px;
  background:radial-gradient(circle at center,rgba(88,175,255,.28),transparent 65%)}
.hero .wrap{position:relative;z-index:1}
.hero h1{color:#fff;max-width:26ch;font-size:clamp(1.7rem,3vw,2.25rem)}
.hero p{color:#c7d8e8;max-width:66ch;font-size:1rem;margin-bottom:0}
.eyebrow{display:inline-block;font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;
  color:#8fc4f0;font-weight:600;margin-bottom:14px}
.hero-stats{display:flex;flex-wrap:wrap;gap:30px;margin-top:22px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14)}
.hero-stats div{min-width:120px}
.hero-stats b{display:block;font-size:1.4rem;color:#fff;font-weight:700}
.hero-stats span{font-size:.83rem;color:#a9c3d8}

/* sections */
section{padding:48px 0}
section.tight{padding:40px 0}
.alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:70ch;margin-bottom:30px}
.sec-head p{color:var(--ink-2);margin-bottom:0}

/* images */
.thumb{background:#fff;border:1px solid var(--line);border-radius:8px;display:grid;place-items:center;
  overflow:hidden}
.thumb img{max-width:100%;max-height:100%;object-fit:contain;display:block}
.cat-img{height:148px;margin:0 0 18px;background:#fff;border:1px solid var(--line);border-radius:8px;
  display:grid;place-items:center;padding:10px;overflow:hidden}
.cat-img img{max-height:100%;max-width:100%;width:auto;object-fit:contain;transition:transform .25s}
.cat:hover .cat-img img{transform:scale(1.05)}
.head-flex{display:flex;gap:36px;align-items:flex-start}
.head-flex>div:first-child{flex:1;min-width:0}
.head-img{width:210px;flex:none;background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:16px;display:grid;place-items:center}
.head-img img{max-height:140px;max-width:100%;width:auto;object-fit:contain}
table.prod th.pic{width:92px}
table.prod td.pic{width:92px;padding:8px 6px 8px 16px}
table.prod td.pic .thumb{width:74px;height:58px;padding:4px}

/* category grid */
.cats{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.cat{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:24px;transition:.18s;color:inherit}
.cat:hover{text-decoration:none;border-color:var(--brand-2);box-shadow:var(--shadow);transform:translateY(-2px)}
.cat-ico{width:46px;height:46px;border-radius:10px;background:var(--bg-3);color:var(--brand);
  display:grid;place-items:center;margin-bottom:16px}
.cat-ico svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:1.8;
  stroke-linecap:round;stroke-linejoin:round}
.cat h3{margin-bottom:6px;color:var(--ink)}
.cat .sub{color:var(--muted);font-size:.9rem;margin-bottom:14px}
.cat .rng{margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px solid var(--line);font-size:.88rem}
.cat .rng b{color:var(--brand-ink);font-weight:600}
.cat .rng span{color:var(--brand);font-weight:600}

/* feature list */
.feats{display:grid;gap:24px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.feat h3{font-size:1rem;margin-bottom:6px}
.feat p{color:var(--ink-2);font-size:.93rem;margin:0}
.feat .num{font-size:.75rem;font-weight:700;color:var(--brand);letter-spacing:.1em;display:block;margin-bottom:8px}

/* page header */
.page-head{background:var(--bg-2);border-bottom:1px solid var(--line);padding:36px 0 34px}
.crumb{font-size:.84rem;color:var(--muted);margin-bottom:12px}
.crumb a{color:var(--muted)}
.page-head p.lead{color:var(--ink-2);max-width:70ch;font-size:1.02rem;margin-bottom:0}
.pill{display:inline-block;background:#fff;border:1px solid var(--line-2);border-radius:999px;
  padding:4px 13px;font-size:.8rem;font-weight:600;color:var(--brand-ink);margin-bottom:14px}

/* spec table */
.two-col{display:grid;gap:36px;grid-template-columns:1.15fr .85fr;align-items:start}
.spec-table{width:100%;border-collapse:collapse;font-size:.93rem}
.spec-table th,.spec-table td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);
  vertical-align:top}
.spec-table th{width:42%;color:var(--ink-2);font-weight:600;background:var(--bg-2)}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:none}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.card h3{margin:0;padding:14px 16px;font-size:.92rem;text-transform:uppercase;letter-spacing:.06em;
  color:var(--ink-2);border-bottom:1px solid var(--line);background:var(--bg-2)}
ul.check{list-style:none;padding:16px;margin:0}
ul.check li{position:relative;padding-left:26px;margin-bottom:9px;color:var(--ink-2);font-size:.94rem}
ul.check li:last-child{margin-bottom:0}
ul.check li:before{content:"";position:absolute;left:6px;top:.55em;width:7px;height:7px;
  border-radius:50%;background:var(--brand-2)}

/* product groups */
.group{margin-bottom:44px}
.group:last-child{margin-bottom:0}
.group > p{color:var(--ink-2);max-width:78ch}
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.prod{width:100%;border-collapse:collapse;min-width:620px;font-size:.94rem}
table.prod th{text-align:left;padding:12px 16px;background:var(--bg-2);color:var(--ink-2);
  font-size:.78rem;letter-spacing:.07em;text-transform:uppercase;border-bottom:1px solid var(--line);
  white-space:nowrap}
table.prod td{padding:13px 16px;border-bottom:1px solid var(--line);color:var(--ink-2)}
table.prod tr:last-child td{border-bottom:none}
table.prod tbody tr:hover{background:var(--bg-2)}
table.prod td.model{font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  font-weight:600;color:var(--ink);white-space:nowrap;font-size:.9rem}
table.prod td.watt{font-weight:600;color:var(--brand-ink);white-space:nowrap}

/* other categories */
.othercats{display:flex;flex-wrap:wrap;gap:10px}
.othercats a{border:1px solid var(--line-2);background:#fff;border-radius:999px;padding:8px 16px;
  font-size:.9rem;color:var(--ink-2);font-weight:500}
.othercats a:hover{border-color:var(--brand-2);color:var(--brand);text-decoration:none}

/* note */
.note{background:var(--bg-3);border-left:3px solid var(--brand-2);border-radius:0 8px 8px 0;
  padding:16px 20px;color:var(--ink-2);font-size:.92rem}
.note strong{color:var(--ink)}

/* footer */
footer{background:#0d1b2a;color:#a9bed2;padding:52px 0 26px;font-size:.93rem}
footer h4{color:#fff;font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;margin:0 0 16px}
.foot-grid{display:grid;gap:36px;grid-template-columns:1.4fr 1fr 1fr;padding-bottom:34px;
  border-bottom:1px solid rgba(255,255,255,.1)}
.foot-grid a{color:#a9bed2}
.foot-grid a:hover{color:#fff}
.foot-brand p{max-width:44ch;color:#8ea6bd}
.foot-list{list-style:none;padding:0;margin:0}
.foot-list li{margin-bottom:9px}
.contact-row{display:flex;gap:10px;margin-bottom:10px}
.contact-row span{color:#7f96ad;min-width:78px;flex:none}
.contact-row b{color:#e6eef6;font-weight:500}
.copy{padding-top:22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:#7f96ad;font-size:.85rem}

@media (max-width:860px){
  .two-col{grid-template-columns:1fr}
  .head-flex{flex-direction:column-reverse;gap:20px}
  .head-img{width:160px;padding:12px}
  .head-img img{max-height:105px}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .head-in{height:auto;flex-direction:column;align-items:flex-start;gap:10px;padding:12px 0}
  nav.main{margin-left:0;width:100%}
  nav.main a{padding:7px 10px;font-size:.85rem}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .hero{padding:40px 0 32px}
  section{padding:42px 0}
}