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<style>
.card {
margin: 24px;
padding: 24px;
border-radius: 16px;
background: #ffffff;
box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12);
font-family: "Helvetica Neue", Arial, sans-serif;
}
.card h1 { margin: 0 0 8px; font-size: 28px; }
.card p { margin: 0 0 16px; color: #64748b; }
.card button {
padding: 10px 16px;
border: none;
border-radius: 8px;
background: #0f172a;
color: #ffffff;
font-weight: 600;
}
</style>
<section class="card">
<h1>Hero Section</h1>
<p>Paste HTML to preview the layout.</p>
<button>Call to action</button>
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