:root{
  --bg:#0a0f22; --panel:#101b3d; --line:#243064; --txt:#eaf0ff;
  --accent:#ffb84d; --accent2:#ffd27a; --muted:#9fb4ff;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:system-ui,Inter,Arial,sans-serif;background:var(--bg);color:var(--txt);}
a{color:#cfe1ff}
.container{width:min(1100px,92%);margin:0 auto}
.header{position:sticky;top:0;z-index:10;background:linear-gradient(180deg,rgba(10,15,34,.95),rgba(10,15,34,.6));backdrop-filter:blur(6px);border-bottom:1px solid #16214a}
.nav{display:flex;gap:18px;align-items:center;justify-content:space-between;padding:12px 0}
.brand{font-weight:800;letter-spacing:.4px;background:linear-gradient(90deg,#69e,#fe9);-webkit-background-clip:text;background-clip:text;color:transparent;font-size:20px}
.hero{position:relative;min-height:68vh;display:grid;align-items:center}
.hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.52)}
.hero .inner{position:relative;padding:60px 0}
h1{font-size:clamp(28px,5vw,48px);margin:0 0 10px}
.kicker{opacity:.9;margin:0 0 16px;color:#cfe1ff}
.btn{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(180deg,var(--accent),var(--accent2));color:#1a1a1a;font-weight:700;border:none;border-radius:12px;padding:12px 18px;cursor:pointer;box-shadow:0 6px 20px rgba(255,184,77,.25)}
.section{padding:52px 0}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.card img{display:block;width:100%;height:180px;object-fit:cover}
.card h3{margin:12px 14px;color:#ffe3a1}
.calc{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:18px}
.row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:10px}
input,select,textarea{width:100%;background:#0c1440;border:1px solid #2a3b7d;color:var(--txt);padding:12px;border-radius:10px}
label{font-size:14px;color:#bcd0ff}
.output{font-size:32px;font-weight:800;margin:6px 0 2px}
.footer{padding:28px 0;border-top:1px solid #16214a;color:#9fb4ff}
@media (min-width:720px){
  .grid-2{display:grid;grid-template-columns:1.1fr .9fr;gap:24px}
}