:root{
  --bg:#f6f8fb; --card:#ffffff; --text:#172033; --muted:#667085;
  --line:#e6eaf0; --accent:#2f6f8f; --accent2:#1f526c;
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}
a{text-decoration:none;color:inherit}
.container{width:min(1120px,92%);margin:auto}
header{background:#24333d;color:#fff}
.nav{display:flex;justify-content:space-between;align-items:center;padding:18px 0}
.brand{font-weight:800;letter-spacing:.5px}
nav a{margin-left:22px;color:#e8eef2;font-size:14px}
.hero{padding:64px 0 58px;background:linear-gradient(135deg,#24333d,#344c5b)}
.hero h1{font-size:48px;line-height:1.08;margin:0 0 16px}
.hero p{max-width:720px;color:#d8e1e7;font-size:18px;line-height:1.6}
.section{padding:56px 0}
.section h2{font-size:32px;margin:0 0 10px}
.lead{color:var(--muted);margin-bottom:26px}
.filters{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:26px}
.search,.select{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:14px}
.search{flex:1;min-width:260px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 4px 18px rgba(24,39,75,.06)}
.card img{width:100%;height:250px;object-fit:cover;background:#eef2f5}
.card-body{padding:20px}
.card h3{margin:0 0 8px;font-size:22px}
.meta{color:var(--muted);font-size:14px;line-height:1.6}
.btn{display:inline-block;margin-top:16px;background:var(--accent);color:#fff;padding:11px 16px;border-radius:9px;font-weight:700;font-size:14px}
.btn:hover{background:var(--accent2)}
.info{display:grid;grid-template-columns:1.1fr 1fr;gap:34px;align-items:start}
.info img{width:100%;border-radius:14px;border:1px solid var(--line)}
.panel{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px}
.specs{margin:0;padding:0;list-style:none}
.specs li{padding:10px 0;border-bottom:1px solid var(--line);line-height:1.45}
.specs li:last-child{border-bottom:0}
.badge{display:inline-block;background:#eaf4f8;color:#1d5e7c;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:700;margin-bottom:12px}
footer{padding:34px 0;background:#1d2a32;color:#cfd8de;margin-top:40px}
.small{font-size:13px;color:var(--muted)}
.empty{display:none;padding:30px;background:#fff;border:1px solid var(--line);border-radius:12px;text-align:center;color:var(--muted)}
@media(max-width:850px){
  .grid{grid-template-columns:1fr}
  .info{grid-template-columns:1fr}
  .hero h1{font-size:36px}
  nav{display:none}
}