:root{--bg:#07111f;--card:#0d1b2a;--text:#f6f8fb;--muted:#b9c5d3;--accent:#21d07a;--line:#203249}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:#f7f9fc;color:#172033;line-height:1.6}
header{background:var(--bg);color:white;position:sticky;top:0;z-index:10}nav{max-width:1100px;margin:auto;padding:16px 22px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{font-weight:900;letter-spacing:1.5px;font-size:22px}.brand span{color:var(--accent)}nav a{color:#eaf0f7;text-decoration:none;margin-left:18px;font-size:14px}
.hero{background:linear-gradient(135deg,#07111f,#102c43);color:white;padding:90px 22px}.wrap{max-width:1100px;margin:auto}
.hero h1{font-size:clamp(42px,7vw,76px);line-height:1;margin:0 0 15px}.hero h1 span{color:var(--accent)}.hero p{font-size:21px;color:#d5dfeb;max-width:650px}
.btn{display:inline-block;background:var(--accent);color:#062115;padding:13px 20px;border-radius:10px;text-decoration:none;font-weight:800;margin-top:15px}
section{padding:65px 22px}h2{font-size:34px;margin:0 0 12px}.lead{color:#5c6878;max-width:760px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin-top:28px}.card{background:white;border:1px solid #e2e8f0;border-radius:16px;padding:25px;box-shadow:0 8px 24px rgba(20,35,55,.06)}
.card h3{margin-top:0}.tag{display:inline-block;background:#e8fff3;color:#087844;padding:4px 9px;border-radius:20px;font-size:12px;font-weight:bold}
.dark{background:#0b1726;color:white}.dark .lead{color:#c4cfdb}.dark .card{background:#112236;border-color:#263b52;color:white}
footer{background:#050c15;color:#b8c5d3;padding:35px 22px}footer a{color:white}.small{font-size:13px;color:#6f7c8c}
@media(max-width:700px){nav .links{display:none}.hero{padding:65px 22px}}