:root{--ink:#1f2328;--bar:#26292e;--blue:#0f5fd1;--blue2:#0b4fb3;--navy:#0b2545;--mute:#5b6470;--line:#d9dee5;--soft:#f4f6f8;--max:1320px}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;font:17px/1.65 "Source Sans 3",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:#fff}
a{color:inherit}img,svg{display:block;max-width:100%}
h1,h2,h3{font-family:Barlow,"Source Sans 3",Arial,sans-serif;color:var(--ink);margin:0;line-height:1.1}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.draft{background:#fff4cc;color:#5c4400;font:600 13px/1.4 "Source Sans 3",sans-serif;text-align:center;padding:8px 16px;border-bottom:1px solid #f0d77a}
/* header: white logo block + dark bar */
header.hd{display:flex;align-items:stretch;min-height:116px;background:var(--bar);position:relative}
.brand{background:#fff;display:flex;align-items:center;padding:0 34px;min-width:300px;text-decoration:none}
.brand svg{height:52px;width:auto}
.bar{flex:1;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:0 24px 0 48px}
.menu{display:flex;gap:36px}
.menu a{white-space:nowrap;color:#fff;text-decoration:none;font:600 19px/1 "Source Sans 3",sans-serif;padding:10px 0;border-bottom:3px solid transparent}
.menu a:hover,.menu a[aria-current]{border-color:var(--blue);color:#fff}
.hbtns{display:flex;gap:10px}
.hb{white-space:nowrap;display:inline-flex;align-items:center;gap:8px;min-height:46px;padding:0 18px;border-radius:3px;font:600 17px/1 "Source Sans 3",sans-serif;text-decoration:none}
.hb.light{background:#f4f6f8;color:var(--ink)}.hb.blue{background:var(--blue);color:#fff}.hb.blue:hover{background:var(--blue2)}
.hb svg{width:18px;height:18px}
.burger{display:none;margin-left:auto;align-self:center;margin-right:16px;width:46px;height:46px;border:1px solid rgba(255,255,255,.3);border-radius:4px;background:none;color:#fff}
@media(max-width:1360px){.menu{gap:24px}.menu a{font-size:17px}.brand{min-width:0;padding:0 26px}.bar{padding-left:30px}}
@media(max-width:1180px){.hbtns .hb.light{display:none}.menu{gap:18px}}
@media(max-width:900px){header.hd{min-height:76px}.brand svg{height:38px}.bar{display:none}.burger{display:grid;place-items:center}
 .bar.open{display:flex;flex-direction:column;align-items:stretch;position:absolute;top:100%;left:0;right:0;z-index:40;background:var(--bar);padding:14px 22px 22px}
 .bar.open .menu{flex-direction:column;gap:0}.bar.open .menu a{padding:15px 0;border-bottom:1px solid rgba(255,255,255,.12)}
 .bar.open .hbtns{margin-top:14px}.bar.open .hb{flex:1;justify-content:center}}
/* page titles */
.ptitle{padding:44px 0 8px}
.ptitle h1{display:inline-block;font-size:clamp(2.3rem,5vw,3.4rem);font-weight:700;padding-bottom:4px;border-bottom:5px solid var(--blue)}
.crumbs{font-size:14px;color:var(--mute);margin-bottom:18px}.crumbs a{text-decoration:none}.crumbs a:hover{color:var(--blue)}
.intro{font-size:clamp(1.05rem,1.6vw,1.25rem);max-width:none;margin:26px 0 0;color:#2b3036}
h2.sec{font-size:clamp(1.8rem,3.4vw,2.6rem);font-weight:600;margin:64px 0 26px}
/* product cards */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
@media(max-width:1100px){.cards{grid-template-columns:repeat(3,1fr)}}
@media(max-width:820px){.cards{grid-template-columns:1fr 1fr;gap:16px}}
@media(max-width:520px){.cards{grid-template-columns:1fr}}
.pc{background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.08),0 6px 20px rgba(0,0,0,.05);display:flex;flex-direction:column}
.pc .pic{aspect-ratio:400/270;overflow:hidden;background:#e6eaf0}
.pc .pic svg{width:100%;height:100%}
.pc .body{padding:22px 30px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.pc h3{font-size:1.45rem;font-weight:700;font-family:"Source Sans 3",sans-serif}
.pc h3 a{text-decoration:none}.pc h3 a:hover{color:var(--blue)}
.duo{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.pc .duo{margin-top:auto}
.ob{display:flex;align-items:center;justify-content:center;gap:8px;min-height:50px;border:1.5px solid var(--ink);background:#fff;font:600 17px/1 "Source Sans 3",sans-serif;cursor:pointer;color:var(--ink);text-decoration:none;list-style:none}
.ob::-webkit-details-marker{display:none}
.ob:hover{background:var(--soft)}
.ob svg{width:16px;height:16px}
.vp{display:flex;align-items:center;justify-content:center;gap:10px;min-height:52px;background:#d0d4da;color:#2b3036;font:600 17px/1 "Source Sans 3",sans-serif;text-decoration:none}
.vp:hover{background:var(--blue);color:#fff}
.vp svg{width:18px;height:18px}
details.dd{position:relative}
details.dd[open] .ob{background:var(--ink);color:#fff}
.dd .list{position:absolute;z-index:5;left:0;top:calc(100% + 6px);min-width:100%;width:max-content;max-width:280px;background:#fff;border:1px solid var(--line);box-shadow:0 10px 30px rgba(0,0,0,.14);padding:8px}
.dd .list a,.dd .list div{display:block;padding:10px 12px;font-size:15px;text-decoration:none;color:var(--ink);border-bottom:1px solid #eef1f4}
.dd .list a:hover{background:var(--soft);color:var(--blue)}
.dd .list div b{display:block;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--mute)}
.dd .list>*:last-child{border:0}
.duo details.dd:last-child .list{left:auto;right:0}
/* product row with installed photo */
.prow{display:grid;grid-template-columns:minmax(260px,340px) 1fr;gap:28px;align-items:stretch}
.cards.one{grid-template-columns:1fr}
.prow .pc .pic{flex:1 1 auto;aspect-ratio:auto;min-height:230px}
.prow .pc .pic img{position:absolute;inset:0}
.prow .pc .pic{position:relative;display:block}
.prow .pc .duo{margin-top:0}
.prow .pc .body{flex:0 0 auto}
.pphoto{margin:0;background:#e6eaf0;box-shadow:0 1px 3px rgba(0,0,0,.08),0 6px 20px rgba(0,0,0,.05);overflow:hidden;min-height:260px}
.pphoto img{width:100%;height:100%;object-fit:cover;display:block;aspect-ratio:1206/722}
.pphoto.wide img{aspect-ratio:1206/722;height:auto}
@media(max-width:760px){.prow{grid-template-columns:1fr}.pphoto{min-height:0}.pphoto img{aspect-ratio:1206/722;height:auto}}
/* home */
.hero{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding-top:72px;padding-bottom:72px}
.hero h1{color:#fff;font-size:clamp(2.4rem,5.4vw,4.2rem);font-weight:700}
.hero p{font-size:1.2rem;color:#c9d6e8;max-width:40ch;margin:20px 0 28px}
.hero .art{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);box-shadow:0 20px 50px rgba(0,0,0,.3)}
@media(max-width:820px){.hero .wrap{grid-template-columns:1fr;padding-top:48px;padding-bottom:48px}}
.catgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
@media(max-width:1000px){.catgrid{grid-template-columns:1fr 1fr}}@media(max-width:520px){.catgrid{grid-template-columns:1fr}}
.cat{display:block;text-decoration:none;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.08),0 6px 20px rgba(0,0,0,.05)}
.cat .pic{aspect-ratio:400/230;overflow:hidden}.cat .pic svg{width:100%;height:100%}
.cat div.t{padding:18px 22px;display:flex;justify-content:space-between;align-items:center;font:700 1.3rem/1.2 Barlow,sans-serif;border-top:4px solid var(--blue)}
.cat:hover div.t{color:var(--blue)}
.band{background:var(--soft);padding:64px 0;margin-top:72px}
.why{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:820px){.why{grid-template-columns:1fr}}
.why div{background:#fff;padding:26px;border-top:4px solid var(--blue)}
.why h3{font-size:1.3rem;margin-bottom:8px}.why p{margin:0;color:var(--mute)}
/* reps */
.reps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:900px){.reps{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.reps{grid-template-columns:1fr}}
.rep{background:#fff;border:1px solid var(--line);padding:26px 28px;display:flex;flex-direction:column;gap:6px}
.rep b{font:700 1.5rem/1.1 Barlow,sans-serif}.rep span{color:var(--mute);font-size:15px;text-transform:uppercase;letter-spacing:.08em}
.rep a.ph{font:700 1.5rem/1.3 Barlow,sans-serif;color:var(--blue);text-decoration:none}
.rep .duo{margin-top:10px}
/* product page */
.pd{display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-top:20px;align-items:start}
@media(max-width:860px){.pd{grid-template-columns:1fr;gap:28px}}
.pd .pic{background:#e6eaf0;box-shadow:0 1px 3px rgba(0,0,0,.08)}
ul.ck{padding:0;list-style:none;margin:18px 0 0;display:grid;gap:10px}
ul.ck li{padding-left:28px;position:relative}ul.ck li:before{content:"";position:absolute;left:0;top:7px;width:16px;height:16px;background:var(--blue);clip-path:polygon(14% 44%,0 65%,50% 100%,100% 16%,80% 0,43% 62%)}
table.opts{width:100%;border-collapse:collapse;margin-top:14px}
table.opts th,table.opts td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
table.opts th{width:38%;font-weight:600;color:var(--mute);background:var(--soft)}
.doclist a{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border:1px solid var(--line);margin-top:10px;text-decoration:none;font-weight:600}
.doclist a:hover{border-color:var(--blue);color:var(--blue)}
.doclist small{font-weight:400;color:var(--mute)}
h3.lbl{font:700 13px/1 "Source Sans 3",sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--mute);margin-top:34px}
/* form */
form{display:grid;gap:14px}label{display:grid;gap:6px;font-weight:600;font-size:15px}
input,select,textarea{font:16px/1.4 "Source Sans 3",sans-serif;padding:13px 14px;border:1.5px solid #b9c1cb;border-radius:2px;width:100%;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--blue)}
textarea{min-height:110px}.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}@media(max-width:560px){.two{grid-template-columns:1fr}}
.hp{position:absolute;left:-9999px}
button.sub{min-height:52px;background:var(--blue);color:#fff;border:0;font:700 17px/1 "Source Sans 3",sans-serif;cursor:pointer}
/* footer */
footer{background:var(--bar);color:#c3c9d1;margin-top:80px;padding:48px 0 calc(48px + env(safe-area-inset-bottom))}
footer .cols{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:32px}
@media(max-width:760px){footer .cols{grid-template-columns:1fr}}
footer h4{color:#fff;font:700 15px/1 "Source Sans 3",sans-serif;letter-spacing:.1em;text-transform:uppercase;margin:0 0 14px}
footer a{color:#fff;text-decoration:none;display:block;padding:3px 0}footer a:hover{color:#8fb8ff}
footer .legal{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:18px;font-size:14px}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px}