<p>Dear {{username}},</p>
<p>To finalize your subscription purchase, please use the verification code below:</p>
<div style="text-align: center; margin: 25px 0;">
    <span style="display: inline-block; background: #F0F9FF; color: #4F46E5; padding: 15px 30px; border-radius: 8px; font-size: 24px; font-weight: 700; border: 1px solid #3B82F6;">
        {{verification_code}}
    </span>
</div>
<p>This code is valid for 10 minutes. If you did not initiate this purchase, please ignore this email.</p>