:root{
  --brand:#0ea5e9;       /* azul primário */
  --brand-dark:#0b8ec9;
}
html{scroll-behavior:smooth}
.section-title{font-weight:800; letter-spacing:.2px}

/* barra gradiente sob o hero (opcional) */
.gradient-bar{height:4px;background:linear-gradient(90deg,var(--brand),#22c55e,#06b6d4,#a855f7)}

/* HERO */
.hero{
  margin-top:56px; /* compensar navbar fixa */
  background:
    linear-gradient(180deg, rgba(2,6,23,.55), rgba(2,6,23,.35)),
    url('https://images.unsplash.com/photo-1556157382-97eda2d62296?q=80&w=1920&auto=format&fit=crop');
  background-size: cover;
  background-position: center 35%;
  color: #e5e7eb;
}
.hero .overlay{ padding: 72px 0; }

/* cartões e stats */
.product.card, .stat{ border-radius:1.25rem; }
.stat i{ display:block; }

/* links no rodapé */
footer a{color:#cbd5e1}
footer a:hover{color:#fff}