html {
  font-size: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1.5rem;
  background: linear-gradient(135deg, #0a1738 0%, #122257 45%, #1b2e6e 100%);
}

.hero-card {
  text-align: center;
  max-width: 640px;
}

.hero-heart {
  width: 140px;
  height: 140px;
  object-fit: contain;
  filter: drop-shadow(0 10px 24px rgba(214, 64, 80, 0.35));
  animation: heartbeat 1.8s ease-in-out infinite;
}

.hero-title {
  margin: 1.5rem 0 0.5rem;
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.5px;
}

.hero-subtitle {
  display: inline-block;
  margin: 1rem 0 0;
  padding: 0.5rem 1.5rem;
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  font-weight: 700;
  letter-spacing: 3px;
  color: #ffffff;
  background: #c0344a;
  border-radius: 999px;
  box-shadow: 0 8px 20px rgba(192, 52, 74, 0.3);
}

@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  15% { transform: scale(1.12); }
  30% { transform: scale(1); }
  45% { transform: scale(1.08); }
}