:root{--bg1:#0a0f15; --bg2:#141c26; --panel:#1a2332; --accent:#00ff88; --muted:#2a3346; --tx:#fff}
*{box-sizing:border-box} html,body{height:100%}
body{margin:0; font-family:'Segoe UI',system-ui,-apple-system,sans-serif; background:linear-gradient(135deg,var(--bg1),var(--bg2)); color:var(--tx)}
.landing{display:grid; place-items:center; min-height:100vh; padding:24px}
.hero{background:var(--panel); border-radius:24px; padding:40px; width:min(720px,95vw);
 box-shadow:0 0 24px rgba(0,255,136,.25), inset 0 0 0 1px rgba(255,255,255,.06); text-align:center}
.hero h1{margin:0 0 12px; font-size: clamp(28px,6vw,48px); color:var(--accent); text-shadow:0 0 16px rgba(0,255,136,.6)}
.hero p{opacity:.9; margin:0 0 24px; font-size:clamp(14px,2.8vw,18px)}
.btn-start,.btn-secondary{display:inline-block; padding:14px 20px; border-radius:14px; text-decoration:none; font-weight:700}
.btn-start{background:var(--accent); color:#000; margin-right:10px}.btn-start:hover{filter:brightness(.9)}
.btn-secondary{background:var(--muted); color:#fff}.btn-secondary:hover{filter:brightness(1.2)}
@media (max-width:520px){.hero{padding:28px}}