.vinfast-order-wrapper { max-width: 600px; margin: auto; font-family: Arial; }
.step { display: none; }
.step.active { display: block; }
.color-selection label { display: inline-block; margin: 6px 8px; cursor: pointer; }
.color-box { display: inline-block; width: 20px; height: 20px; border: 1px solid #ccc; vertical-align: middle; }
.thumb-preview { width: 60px; height: auto; display: block; border-radius: 6px; }
.bike-image img { margin: 10px 0; border: 1px solid #ddd; border-radius: 6px; }
button { margin-top: 10px; padding: 8px 16px; }