:root{--navy:#0b2541;--blue:#075eaa;--orange:#ed6a25;--ink:#17283a;--muted:#657486;--mist:#eef4f8;--line:#dce5ec;--shadow:0 20px 50px rgba(11,37,65,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font:16px/1.65 Inter,"Segoe UI","Microsoft YaHei",Arial,sans-serif}.shell{width:min(1180px,calc(100% - 48px));margin:auto}a{color:inherit}img{display:block;max-width:100%}button,input,textarea,select{font:inherit}
.top{background:var(--navy);color:#cbd7e3;font-size:14px}.top .shell{min-height:38px;display:flex;align-items:center;justify-content:space-between}.lang{display:flex;gap:5px}.lang button{border:0;padding:5px 9px;border-radius:3px;background:transparent;color:#cbd7e3;cursor:pointer}.lang button.active{background:#fff;color:var(--navy);font-weight:800}
header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.nav{min-height:84px;display:flex;align-items:center;justify-content:space-between;gap:28px}.logo{width:390px;max-width:42vw}.navlinks{display:flex;align-items:center;gap:25px}.navlinks a{text-decoration:none;font-size:14px;font-weight:700}.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:5px;padding:13px 20px;background:var(--orange);color:#fff;text-decoration:none;font-weight:800;cursor:pointer;box-shadow:0 9px 20px rgba(237,106,37,.2)}.btn:hover{background:#d95316}.outline{background:#fff;color:var(--navy);border:1px solid #b9c7d5;box-shadow:none}
.crumb{padding:22px 0;color:var(--muted);font-size:14px}.crumb a{text-decoration:none;color:var(--blue)}.product{padding:28px 0 88px}.product-grid{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center}.imagebox{min-height:480px;display:grid;place-items:center;background:linear-gradient(145deg,#f7fafc,#e7eff5);border:1px solid var(--line);position:relative}.imagebox:after{content:attr(data-mark);position:absolute;right:22px;bottom:12px;color:#cdd9e3;font-size:14px;letter-spacing:.18em;font-weight:800}.imagebox img{width:92%;height:390px;object-fit:contain}.label{color:var(--blue);font-size:14px;letter-spacing:.13em;text-transform:uppercase;font-weight:800}h1{font-size:clamp(42px,5vw,64px);line-height:1.05;letter-spacing:-.04em;margin:14px 0 20px}.lead{font-size:18px;color:var(--muted);margin:0}.tags{display:flex;flex-wrap:wrap;gap:9px;margin:26px 0}.tags span{padding:8px 12px;background:var(--mist);border:1px solid #d5e1e9;border-radius:99px;color:#40566a;font-size:14px}.note{padding:18px 20px;border-left:4px solid var(--orange);background:#fff6f0;color:#704126;margin:26px 0}.actions{display:flex;gap:12px;flex-wrap:wrap}
.osb-mark{padding:45px;text-align:center;color:var(--navy)}.osb-mark strong{display:block;font-size:clamp(72px,10vw,132px);line-height:.9;letter-spacing:-.06em}.osb-mark span{display:block;margin-top:22px;color:var(--blue);font-weight:800;letter-spacing:.16em;text-transform:uppercase}
section{padding:84px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:38px;margin-bottom:35px}.section-head h2,.quote-copy h2{font-size:clamp(34px,4vw,48px);line-height:1.12;letter-spacing:-.035em;margin:10px 0 0}.section-head p{max-width:510px;color:var(--muted);margin:0}.specs{background:var(--mist)}.spec-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:30px}.table{background:#fff;border:1px solid var(--line)}.row{display:grid;grid-template-columns:180px 1fr;border-bottom:1px solid var(--line)}.row:last-child{border:0}.row b,.row span{padding:16px 19px}.row b{background:#f8fafc;color:#354c62;font-size:14px}.row span{color:#526578}.side{background:var(--navy);color:#fff;padding:34px}.side h3{font-size:25px;margin:0 0 14px}.side p{color:#b9cada}.side ul{padding:0;margin:25px 0 0;list-style:none}.side li{padding:12px 0;border-top:1px solid rgba(255,255,255,.14);color:#e0eaf2}.side li:before{content:"✓";color:#81c8ff;font-weight:800;margin-right:10px}
.applications{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.app{min-height:175px;padding:26px;border:1px solid var(--line);border-top:4px solid var(--blue)}.app strong{display:block;font-size:20px;margin-bottom:8px}.app span{color:var(--muted);font-size:14px}.quote{background:#f5f8fb}.quote-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:70px;align-items:start}.quote-copy p{color:var(--muted);font-size:18px}.contact a{display:block;color:var(--navy);font-weight:700;text-decoration:none;margin:9px 0}.form{display:grid;grid-template-columns:1fr 1fr;gap:15px;padding:32px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:14px;font-weight:700;color:#415469}.field input,.field textarea{width:100%;border:1px solid #cbd6df;border-radius:4px;padding:12px 13px;color:var(--ink);background:#fff}.field textarea{min-height:120px;resize:vertical}.field input:focus,.field textarea:focus{outline:2px solid rgba(7,94,170,.17);border-color:var(--blue)}.form .btn,.small,.status{grid-column:1/-1}.small{color:var(--muted);font-size:13px;margin:0}.status{display:none;padding:12px 14px;background:#eaf6ef;color:#23653c;font-size:14px}
footer{background:#071727;color:#c8d5e1;padding:50px 0 24px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px}.footer-logo{width:410px;filter:brightness(0) invert(1)}footer h4{color:#fff;margin:0 0 12px}footer p,footer a{display:block;color:#aebfce;text-decoration:none;font-size:14px;margin:6px 0}.copyright{margin-top:35px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);font-size:13px;color:#8095a8}
@media(max-width:920px){.navlinks{display:none}.product-grid,.spec-layout,.quote-grid{grid-template-columns:1fr}.applications{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.logo{width:320px;max-width:70vw}}
@media(max-width:600px){.shell{width:min(100% - 32px,1180px)}.top .shell{padding:7px 0}.imagebox{min-height:320px}.imagebox img{height:260px}.row{grid-template-columns:1fr}.row b{padding-bottom:6px}.row span{padding-top:3px}.applications,.form,.footer-grid{grid-template-columns:1fr}.field.full,.form .btn,.small,.status,.footer-grid>div:first-child{grid-column:1}.section-head{display:block}.section-head p{margin-top:14px}section{padding:68px 0}}