body {
  margin: 0;
  font-family: 'Helvetica Neue', sans-serif;
  background-color: #000;
  color: #fff;
  line-height: 1.6;
}

a {
  color: #fff;
  text-decoration: none;
}

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  background: url('topnote_phone.png') no-repeat top center;
  background-size: 40%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-overlay {
  position: relative;
  text-align: center;
  padding: 20px;
  background: rgba(0, 0, 0, 0.6);
  border-radius: 12px;
}

.hero h1 {
  font-size: 3rem;
  margin: 0;
}

.tagline {
  margin-top: 10px;
  font-size: 1.2rem;
  color: #ccc;
}

.cta-button {
  margin-top: 20px;
  padding: 12px 24px;
  background: white;
  color: black;
  font-weight: bold;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.3s ease;
}

.cta-button:hover {
  background: #ccc;
}

/* Features */
#features {
  padding: 40px 20px;
  background-color: #111;
}

#features h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 30px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.feature {
  background-color: #1a1a1a;
  padding: 20px;
  border-radius: 12px;
  text-align: center;
}

/* Footer */
footer {
  background-color: #000;
  text-align: center;
  padding: 20px;
  font-size: 0.9rem;
  color: #666;
}