:root{
  --ink:#152229;
  --muted:#617079;
  --line:#dbe3e7;
  --paper:#ffffff;
  --soft:#f4f7f8;
  --brand:#0f7f9e;
  --brand-dark:#075a72;
  --accent:#c7a46a;
  --max:1180px;
  --radius:18px;
  --shadow:0 16px 50px rgba(21,34,41,.08);
}
*{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:var(--paper);line-height:1.6}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{width:min(var(--max),calc(100% - 40px));margin:auto}
.topbar{background:var(--ink);color:#fff;font-size:.86rem}
.topbar .container{display:flex;justify-content:space-between;gap:16px;padding:8px 0}
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(219,227,231,.9)}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:84px}
.logo-wrap{display:flex;align-items:center;gap:13px}
.logo{width:78px;height:78px;object-fit:cover;border-radius:12px}
.brand{font-family:Georgia,serif;letter-spacing:.22em;font-size:1.08rem}
.brand span{display:block;letter-spacing:.44em;font-size:.82rem;margin-top:2px}
nav ul{display:flex;align-items:center;gap:24px;list-style:none;margin:0;padding:0}
nav a{font-weight:650;color:#31424a;position:relative}
nav a::after{content:"";position:absolute;left:0;right:100%;bottom:-8px;height:2px;background:var(--brand);transition:.25s}
nav a:hover::after,nav a.active::after{right:0}
.menu-btn{display:none;border:0;background:none;font-size:1.8rem}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 18px;border-radius:999px;border:1px solid transparent;font-weight:700;transition:.25s;cursor:pointer}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn-ghost{border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.hero{position:relative;overflow:hidden;background:
 radial-gradient(circle at 80% 20%,rgba(15,127,158,.16),transparent 35%),
 linear-gradient(135deg,#f5fafb 0%,#fff 52%,#eef4f6 100%)}
.hero .container{display:grid;grid-template-columns:1.2fr .8fr;min-height:650px;align-items:center;gap:40px;padding:72px 0}
.eyebrow{text-transform:uppercase;letter-spacing:.16em;font-size:.82rem;color:var(--brand);font-weight:800}
.hero h1{font-family:Georgia,serif;font-size:clamp(3rem,6vw,5.5rem);line-height:1.02;margin:14px 0 20px;max-width:850px}
.hero p{font-size:1.15rem;color:var(--muted);max-width:650px}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-art{min-height:470px;border-radius:30px;overflow:hidden;box-shadow:var(--shadow);background:#dbe9ee;position:relative}
.hero-art::before,.hero-art::after{content:"";position:absolute;inset:0;background-size:cover;background-position:center}
.hero-art::before{background-image:url('assets/window-aluminium.svg');opacity:.94}
.hero-art::after{background:linear-gradient(135deg,rgba(15,127,158,.14),rgba(199,164,106,.1));mix-blend-mode:multiply}
.section{padding:86px 0}
.section.soft{background:var(--soft)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:32px}
.section h2{font-family:Georgia,serif;font-size:clamp(2rem,3.4vw,3.2rem);margin:0 0 12px}
.section-head p{color:var(--muted);max-width:620px;margin:0}
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.card-body{padding:23px}
.card h3{margin:0 0 8px;font-size:1.25rem}
.card p{margin:0;color:var(--muted)}
.product-media{aspect-ratio:1.35;background:#eaf0f2;overflow:hidden}
.product-media img{width:100%;height:100%;object-fit:cover}
.tag{display:inline-flex;padding:7px 10px;background:#eaf6f8;color:var(--brand-dark);border-radius:999px;font-size:.77rem;font-weight:800;margin-bottom:10px}
.feature-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}
.feature{padding:22px;border:1px solid var(--line);border-radius:16px;background:#fff}
.feature strong{display:block;font-size:1rem;margin-bottom:4px}
.feature span{color:var(--muted);font-size:.93rem}
.banner{padding:40px;border-radius:26px;background:linear-gradient(135deg,var(--ink),#20424e);color:#fff;display:flex;justify-content:space-between;align-items:center;gap:30px}
.banner p{color:#dce8eb;margin:8px 0 0}
.page-hero{padding:70px 0;background:linear-gradient(135deg,#f6fafb,#eef3f5)}
.page-hero h1{font-family:Georgia,serif;font-size:clamp(2.6rem,4.5vw,4.5rem);margin:8px 0 14px}
.page-hero p{max-width:740px;color:var(--muted);font-size:1.1rem}
.service-card{padding:34px}
.service-number{font-family:Georgia,serif;color:var(--accent);font-size:1.25rem;margin-bottom:18px}
.about-copy{font-size:1.2rem;max-width:900px}
.quote-box{border-left:4px solid var(--brand);padding-left:24px;margin-top:28px;color:#33464f}
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:start}
.contact-card{padding:28px}
.contact-item{padding:16px 0;border-bottom:1px solid var(--line)}
.contact-item:last-child{border-bottom:0}
.contact-item small{display:block;color:var(--muted);text-transform:uppercase;letter-spacing:.12em}
form{display:grid;gap:14px}
label{font-weight:700;font-size:.92rem}
input,textarea,select{width:100%;padding:14px 15px;border:1px solid #ccd7dc;border-radius:12px;font:inherit;background:#fff}
textarea{min-height:160px;resize:vertical}
footer{background:#111d22;color:#dbe6e9;margin-top:70px}
footer .container{padding:46px 0}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:40px}
footer h3{margin:0 0 12px;color:#fff;font-family:Georgia,serif}
footer p,footer a{color:#afc0c6}
.footer-bottom{padding-top:22px;margin-top:26px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;gap:20px;font-size:.88rem}
.notice{padding:12px 14px;background:#edf8fa;border:1px solid #cce7ed;color:#174957;border-radius:12px;font-size:.92rem}
@media(max-width:900px){
  nav ul{position:absolute;top:84px;left:20px;right:20px;background:#fff;display:none;flex-direction:column;align-items:stretch;padding:18px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
  nav ul.open{display:flex}
  nav a{display:block;padding:9px}
  .menu-btn{display:block}
  .hero .container{grid-template-columns:1fr;padding:56px 0}
  .hero-art{min-height:340px}
  .grid-3{grid-template-columns:1fr}
  .grid-2,.contact-grid{grid-template-columns:1fr}
  .feature-strip,.footer-grid{grid-template-columns:1fr}
  .banner{flex-direction:column;align-items:flex-start}
}
@media(max-width:600px){
  .container{width:min(var(--max),calc(100% - 28px))}
  .topbar .container{flex-direction:column;gap:2px}
  .logo{width:64px;height:64px}
  .brand{font-size:.94rem}
  .brand span{font-size:.72rem}
  .hero h1{font-size:3.2rem}
}