html, body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', sans-serif;
  background: linear-gradient(135deg, #f7f7f7, #e9e9e9);
  color: #222;
  text-align: center;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 24px 16px;
}

.card {
  background: #fff;
  padding: 28px 20px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

h1 {
  color: #e31513;
  font-size: 1.6rem;
  font-weight: 600;
  margin: 0 0 20px 0;
  line-height: 1.3;
}

p {
  font-size: 1rem;
  line-height: 1.6;
  margin: 10px 0;
}

strong {
  color: #e31513;
  font-weight: 600;
}

.highlight {
  font-size: 1.05rem;
  font-weight: 500;
  color: #000;
  background: #fff5f5;
  border-left: 4px solid #e31513;
  padding: 10px 12px;
  margin: 20px auto;
  display: inline-block;
  border-radius: 4px;
}

a {
  color: #e31513;
  text-decoration: none;
  word-break: break-all;
}

a:hover {
  text-decoration: underline;
}

@media (min-width: 768px) {
  h1 { font-size: 2rem; }
  .card { padding: 40px 32px; }
}