.roi-v2-card{max-width:900px;margin:30px auto;padding:30px;border-radius:24px;background:linear-gradient(135deg,#0f172a,#1e293b);color:#fff}
.roi-v2-card *{color:#fff;box-sizing:border-box}
.roi-v2-card input,.roi-v2-card select{width:100%;padding:14px;margin:8px 0 16px;background:#334155;border:1px solid #475569;border-radius:12px}
#calcROI{width:100%;padding:16px;border:none;border-radius:12px;background:linear-gradient(90deg,#06b6d4,#8b5cf6);font-weight:bold;cursor:pointer}
.results{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-top:20px}
.results div{background:rgba(255,255,255,.08);padding:20px;border-radius:14px;text-align:center}
@media(max-width:768px){.results{grid-template-columns:1fr}}