.plec-form { max-width: 600px; margin: 20px auto; padding: 20px; border: 1px solid #ddd; border-radius: 8px; font-family: sans-serif; }
.plec-form label { display: block; margin-top: 10px; font-weight: bold; }
.plec-form input { width: 100%; padding: 8px; margin-top: 5px; border: 1px solid #ccc; box-sizing: border-box; }
.button-calc { padding: 12px; color: white; border: none; cursor: pointer; border-radius: 4px; transition: 0.3s; }
.button-calc:hover { opacity: 0.8; }