:root{
--bg:#0b1118;
--card:#151d27;
--text:#eef3f8;
--muted:#a9b4c1;
--blue:#2f81f7;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,Arial,sans-serif;line-height:1.6}
nav{display:flex;justify-content:space-between;align-items:center;padding:22px 8%;position:sticky;top:0;background:#0b1118dd;backdrop-filter:blur(8px)}
.brand{font-weight:700}.brand span{margin-left:8px}
.menu a{color:var(--muted);text-decoration:none;margin-left:22px}
.hero{text-align:center;padding:10vh 8%}
.hero h1{font-size:4rem;margin:0}
.hero h2{color:var(--blue);margin:.4rem 0 1rem}
.hero p{max-width:760px;margin:auto;color:var(--muted)}
.button{display:inline-block;margin-top:2rem;background:var(--blue);color:#fff;text-decoration:none;padding:14px 24px;border-radius:10px}
section{padding:5rem 8%}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:24px}
.card{background:var(--card);padding:24px;border-radius:16px;border:1px solid #24303d}
.badge{font-size:.75rem;padding:5px 9px;border-radius:20px;font-weight:700}
.concept{background:#19324d;color:#8cc4ff}
.proto{background:#234027;color:#98ffb4}
.notes{background:#40351c;color:#ffd580}
.timeline li{margin:14px 0}
footer{text-align:center;padding:40px;border-top:1px solid #24303d;color:var(--muted)}
@media(max-width:700px){
.hero h1{font-size:2.6rem}
.menu{display:none}
}