:root { --brand:#0B5ED7; }
html { scroll-behavior:smooth; }
body { font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif; }
.mobile-call-btn {
  position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 60;
  background: var(--brand); color: #fff; text-align: center; font-weight: 700;
  padding: 12px 16px; border-radius: 12px; box-shadow: 0 10px 30px rgba(11,94,215,.35);
}
.wa-float {
  position: fixed; right: 18px; bottom: 78px; z-index: 65; width: 54px; height: 54px;
  border-radius: 999px; display: grid; place-items:center; font-size: 28px;
  background: #25D366; color: white; box-shadow: 0 10px 30px rgba(37,211,102,.35);
}
@media (min-width: 768px) {
  .mobile-call-btn { display: none; }
  .wa-float { bottom: 20px; }
}