:root{
  --blue:#073c78;
  --blue-2:#0b5da5;
  --navy:#08233e;
  --orange:#ef6c1a;
  --red:#c83b2a;
  --teal:#147f8f;
  --ink:#132235;
  --muted:#66788c;
  --paper:#f6f8fb;
  --white:#fff;
  --line:#dfe6ee;
  --shadow:0 18px 50px rgba(7,42,78,.13);
  --radius:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.65}
img{max-width:100%;display:block}
a{color:inherit}
button,input,select,textarea{font:inherit}
.container{width:min(1180px,calc(100% - 40px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(8,35,62,.08)}
.nav-wrap{height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{text-decoration:none;display:flex;align-items:center;font-weight:800;letter-spacing:.08em;font-size:24px;color:var(--navy)}
.brand-mark span{display:inline-flex;width:20px;height:20px;border-radius:50%;background:var(--red);color:transparent;margin:0 1px;vertical-align:-2px;box-shadow:inset 0 0 0 6px #174c8a}
.brand-light{font-weight:400;margin-left:2px}
.nav{display:flex;align-items:center;gap:28px}
.nav a{text-decoration:none;font-weight:700;font-size:14px;color:#28425e}
.nav a:hover{color:var(--blue-2)}
.nav .nav-cta{background:var(--blue);color:#fff;padding:10px 17px;border-radius:999px}
.nav-toggle{display:none;border:0;background:transparent;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--navy);margin:5px}
.hero{min-height:700px;position:relative;display:flex;align-items:center;overflow:hidden;background:var(--navy)}
.hero-media{position:absolute;inset:0;background:url('../images/hero-house.jpg') center/cover no-repeat;transform:scale(1.03)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,28,53,.96) 0%,rgba(5,38,72,.86) 46%,rgba(4,28,53,.25) 100%)}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.25fr .75fr;gap:56px;align-items:center;padding-block:92px}
.hero-copy{max-width:720px;color:#fff}
.eyebrow{font-size:13px;letter-spacing:.18em;font-weight:800;color:#6fb8ff;margin-bottom:14px}
.hero h1{font-size:clamp(44px,6vw,78px);line-height:1.02;margin:0 0 24px;letter-spacing:-.045em;max-width:820px}
.hero-copy>p{font-size:20px;color:#dceafa;max-width:690px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:32px 0 16px}
.btn{display:inline-flex;justify-content:center;align-items:center;min-height:50px;padding:0 22px;border-radius:12px;text-decoration:none;border:1px solid transparent;font-weight:800;cursor:pointer;transition:.2s ease}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:linear-gradient(135deg,var(--orange),#ff8d34);color:#fff;box-shadow:0 12px 28px rgba(239,108,26,.28)}
.btn-secondary{border-color:rgba(255,255,255,.4);color:#fff;background:rgba(255,255,255,.08)}
.source-note{font-size:12px!important;opacity:.72;margin-top:18px}
.hero-card{background:rgba(255,255,255,.94);border:1px solid rgba(255,255,255,.35);border-radius:28px;padding:24px;box-shadow:0 30px 70px rgba(0,0,0,.22);backdrop-filter:blur(14px)}
.hero-card-top{font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:800;color:var(--muted);margin-bottom:14px}
.metric-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.metric{border:1px solid var(--line);border-radius:16px;padding:18px;background:#fff;min-height:114px;display:flex;flex-direction:column;justify-content:center}
.metric strong{font-size:26px;color:var(--blue);line-height:1.1}
.metric span{font-size:13px;color:var(--muted);margin-top:7px}
.benefit-strip{background:#fff;border-bottom:1px solid var(--line);box-shadow:0 12px 35px rgba(8,35,62,.06)}
.benefit-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.benefit{display:flex;align-items:center;gap:14px;padding:24px 18px;border-right:1px solid var(--line)}
.benefit:last-child{border-right:0}
.benefit .icon{display:grid;place-items:center;width:44px;height:44px;border-radius:13px;background:#eef5fb;color:var(--blue);font-weight:900;font-size:20px;flex:none}
.benefit strong,.benefit small{display:block}.benefit strong{font-size:15px}.benefit small{color:var(--muted);margin-top:2px;line-height:1.35}
.section{padding:104px 0}
.section-head{max-width:760px;margin-bottom:50px}
.section-head h2{font-size:clamp(34px,4vw,54px);line-height:1.1;letter-spacing:-.035em;margin:0 0 18px;color:var(--navy)}
.section-head p{font-size:18px;color:var(--muted);margin:0}
.section-head.light h2,.section-head.light p{color:#fff}.section-head.light p{opacity:.75}
.product{display:grid;grid-template-columns:.8fr 1.2fr;gap:54px;align-items:center;border:1px solid var(--line);border-radius:var(--radius);padding:46px;margin-bottom:34px;box-shadow:var(--shadow);overflow:hidden;position:relative;background:#fff}
.product.reverse{grid-template-columns:1.2fr .8fr}.product.reverse .product-image-wrap{order:2}.product.reverse .product-copy{order:1}
.product:before{content:"";position:absolute;left:0;top:0;bottom:0;width:8px;background:var(--blue)}
.product-orange:before{background:var(--orange)}.product-red:before{background:var(--red)}.product-dark:before{background:#44505d}
.product-image-wrap{min-height:330px;border-radius:20px;display:grid;place-items:center;background:radial-gradient(circle at center,#fff 0,#f4f7fa 68%,#e9eef4 100%);padding:24px;position:relative}
.product-image-wrap:after{content:"";position:absolute;width:72%;height:24px;background:rgba(10,35,60,.14);filter:blur(14px);bottom:42px;border-radius:50%}
.product-image-wrap img{max-height:280px;position:relative;z-index:1;object-fit:contain}
.product-kicker{font-size:12px;letter-spacing:.16em;font-weight:800;color:var(--blue-2);margin-bottom:7px}
.product h3{font-size:43px;line-height:1;margin:0;color:var(--navy);letter-spacing:-.03em}
.product h4{font-size:18px;margin:10px 0 18px;color:#48617c}
.product p{color:#52677c;margin:0 0 20px}
.check-list{padding:0;margin:0;list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:10px 22px}
.check-list li{position:relative;padding-left:24px;color:#334b63;font-size:14px}.check-list li:before{content:"✓";position:absolute;left:0;color:var(--teal);font-weight:900}
.pill-row{display:flex;gap:8px;flex-wrap:wrap;margin:22px 0}.pill-row span{font-size:12px;font-weight:800;padding:7px 10px;border-radius:999px;background:#fff3eb;color:#a64b13;border:1px solid #ffd7be}
.usage{font-size:14px}.usage strong{color:var(--ink)}
.performance{background:linear-gradient(135deg,#061d34,#0a3f73);color:#fff;position:relative;overflow:hidden}
.performance:after{content:"";position:absolute;right:-180px;top:-120px;width:520px;height:520px;border-radius:50%;background:rgba(39,132,215,.15)}
.performance-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;position:relative;z-index:1}
.performance-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:20px;padding:30px;backdrop-filter:blur(8px)}
.performance-card .number{font-size:38px;display:block;font-weight:900;color:#ff9b52;letter-spacing:-.03em}
.performance-card h3{margin:8px 0 10px;font-size:20px}.performance-card p{margin:0;color:#c8dbef;font-size:14px}
.report-note{position:relative;z-index:1;margin-top:22px;border:1px solid rgba(255,255,255,.13);background:rgba(0,0,0,.15);border-radius:14px;padding:17px 20px;color:#d5e5f5;font-size:13px}
.certificates{background:#f7f9fc}
.cert-group-title{margin:36px 0 18px;font-size:20px;color:var(--navy)}
.cert-grid{display:grid;gap:18px}.cert-grid.four{grid-template-columns:repeat(4,1fr)}
.cert-card{border:1px solid var(--line);background:#fff;border-radius:16px;padding:12px;cursor:zoom-in;box-shadow:0 10px 30px rgba(6,41,75,.07);text-align:left;transition:.2s ease}
.cert-card:hover{transform:translateY(-5px);box-shadow:0 18px 38px rgba(6,41,75,.13)}
.cert-card img{width:100%;aspect-ratio:335/474;object-fit:cover;border-radius:9px;border:1px solid #e7edf3;background:#fff}
.cert-card span{display:block;font-weight:800;color:var(--navy);padding:11px 4px 3px}
.gallery{background:#0c2339;color:#fff}
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.gallery-grid figure{margin:0;position:relative;min-height:260px;border-radius:18px;overflow:hidden;background:#102c46}
.gallery-grid figure.gallery-wide{grid-column:span 2}
.gallery-grid img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;transition:transform .5s ease}.gallery-grid figure:hover img{transform:scale(1.04)}
.gallery-grid figure:after{content:"";position:absolute;inset:45% 0 0;background:linear-gradient(transparent,rgba(0,0,0,.76))}
.gallery-grid figcaption{position:absolute;z-index:2;left:18px;right:18px;bottom:15px;font-weight:800}
.contact{background:linear-gradient(180deg,#fff,#f4f7fb)}
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:start}
.contact-copy h2{font-size:clamp(36px,4vw,54px);line-height:1.08;letter-spacing:-.035em;margin:0 0 18px;color:var(--navy)}
.contact-copy p{font-size:18px;color:var(--muted)}.contact-copy a{color:var(--blue-2);font-weight:800}
.contact-points{display:grid;gap:13px;margin-top:32px}.contact-points div{padding:16px 18px;border-left:4px solid var(--orange);background:#fff;border-radius:0 12px 12px 0;box-shadow:0 8px 22px rgba(7,42,78,.06)}
.contact-points strong,.contact-points span{display:block}.contact-points span{font-size:13px;color:var(--muted);margin-top:3px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:32px;box-shadow:var(--shadow)}
.contact-form{display:grid;gap:17px}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-form label{display:grid;gap:7px;font-size:13px;font-weight:800;color:#334a60}
.contact-form input,.contact-form select,.contact-form textarea{width:100%;border:1px solid #ccd7e2;border-radius:11px;padding:12px 13px;background:#fbfcfe;color:var(--ink);outline:none;transition:.15s ease}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{border-color:#5b9ed4;box-shadow:0 0 0 3px rgba(43,126,192,.12);background:#fff}
.contact-form textarea{resize:vertical}.submit-btn{border:0;width:100%}.form-note{font-size:12px;color:var(--muted);text-align:center;margin:0}
.honeypot{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}.alert{padding:12px 14px;border-radius:10px;margin-bottom:18px;font-size:13px;font-weight:700}.alert-error{background:#fff0ef;border:1px solid #f5c6c2;color:#a93428}
.footer{background:#071b2d;color:#dce8f3;padding:32px 0}.footer-grid{display:grid;grid-template-columns:1fr 1fr auto;align-items:center;gap:24px}.footer-brand{display:block;font-size:20px;font-weight:900;letter-spacing:.08em}.footer small{display:block;color:#8197aa}.footer-contact span,.footer-contact a{display:block}.footer-contact span{font-size:12px;color:#8197aa}.footer-contact a{font-weight:800;color:#fff;text-decoration:none}.back-top{font-size:13px;color:#c7d7e5;text-decoration:none}
.lightbox{border:0;border-radius:18px;padding:14px;max-width:min(720px,92vw);max-height:92vh;background:#fff;box-shadow:0 30px 90px rgba(0,0,0,.4)}.lightbox::backdrop{background:rgba(3,15,27,.83)}.lightbox img{max-height:84vh;margin:auto;border-radius:8px}.lightbox-close{position:absolute;right:18px;top:16px;width:38px;height:38px;border-radius:50%;border:0;background:rgba(5,28,51,.85);color:#fff;font-size:25px;line-height:1;cursor:pointer}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .65s ease,transform .65s ease}.reveal.visible{opacity:1;transform:none}.delay-1{transition-delay:.08s}.delay-2{transition-delay:.16s}.delay-3{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}}
@media (max-width:980px){
  .nav-toggle{display:block}.nav{position:absolute;left:20px;right:20px;top:68px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px;display:none;flex-direction:column;align-items:stretch;gap:3px;box-shadow:var(--shadow)}.nav.open{display:flex}.nav a{padding:11px 12px}.nav .nav-cta{text-align:center;margin-top:5px}
  .hero{min-height:auto}.hero-grid{grid-template-columns:1fr;gap:30px;padding-block:76px}.hero-overlay{background:linear-gradient(90deg,rgba(4,28,53,.95),rgba(5,38,72,.72))}.hero-card{max-width:560px}
  .benefit-grid{grid-template-columns:1fr 1fr}.benefit:nth-child(2){border-right:0}.benefit:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .product,.product.reverse{grid-template-columns:1fr;padding:32px;gap:28px}.product.reverse .product-image-wrap,.product.reverse .product-copy{order:initial}.product-image-wrap{min-height:260px}.check-list{grid-template-columns:1fr}
  .performance-grid{grid-template-columns:1fr}.cert-grid.four{grid-template-columns:1fr 1fr}.contact-grid{grid-template-columns:1fr;gap:38px}
}
@media (max-width:680px){
  .container{width:min(100% - 28px,1180px)}.section{padding:76px 0}.hero-grid{padding-block:62px}.hero h1{font-size:44px}.hero-copy>p{font-size:17px}.hero-actions{display:grid}.hero-actions .btn{width:100%}.metric-grid{grid-template-columns:1fr 1fr}.metric strong{font-size:21px}
  .benefit-grid{grid-template-columns:1fr}.benefit{border-right:0;border-bottom:1px solid var(--line)!important}.benefit:last-child{border-bottom:0!important}
  .product{padding:24px 20px}.product h3{font-size:34px}.product-image-wrap{min-height:220px}.product-image-wrap img{max-height:200px}
  .cert-grid.four{grid-template-columns:1fr 1fr;gap:10px}.cert-card{padding:7px}.cert-card span{font-size:12px}
  .gallery-grid{grid-template-columns:1fr}.gallery-grid figure,.gallery-grid figure.gallery-wide{grid-column:auto;min-height:230px}.field-row{grid-template-columns:1fr}.form-card{padding:22px 18px}.footer-grid{grid-template-columns:1fr;gap:14px}.back-top{justify-self:start}
}