:root { --primary-green: #28a745; }
        .method-switch { background: #f1f3f5; border-radius: 50px; padding: 0.2rem; display: inline-flex; margin-bottom: 1rem; }
        .method-option { padding: 0.4rem 1.2rem; border-radius: 40px; cursor: pointer; transition: 0.2s; }
        .method-option.active { background: var(--primary-green); color: white; }
        .sequence-input { font-family: 'Courier New', monospace; letter-spacing: 1px; }
        .dg-badge { font-size: 0.8rem; padding: 0.2rem 0.6rem; border-radius: 20px; background: #f8d7da; color: #721c24; display: inline-block; margin-top: 0.3rem; }
        .footer a { color: #adb5bd; }