body.download-page {
  background: #0a0a10;
  color: white;
  font-family: Arial;
}

/* HERO */
.download-hero {
  text-align: center;
  padding: 60px 20px;
  background: linear-gradient(90deg, #000, #111, #000);
  border-bottom: 2px solid gold;
}

.download-hero h1 {
  color: gold;
  font-size: 36px;
}

/* CONTAINER */
.download-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 40px;
}

/* CARD */
.download-card {
  background: #15151d;
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  transition: 0.3s;
  border: 1px solid #222;
}

.download-card:hover {
  transform: translateY(-5px);
  border-color: gold;
}

/* BUTTON */
.btn-download {
  display: inline-block;
  margin-top: 15px;
  padding: 12px 25px;
  background: gold;
  color: black;
  font-weight: bold;
  border-radius: 6px;
  text-decoration: none;
}

/* COLORS */
.google { box-shadow: 0 0 20px rgba(0,255,0,0.2); }
.mega   { box-shadow: 0 0 20px rgba(255,0,0,0.2); }
.zalo   { box-shadow: 0 0 20px rgba(0,150,255,0.2); }

/* NOTE */
.note {
  padding: 30px;
  margin: 40px;
  background: #111;
  border-left: 4px solid gold;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 20px;
  background: black;
}