.list-comparator {
            background: #f9fafc;
            border-radius: 12px;
            padding: 0rem;
            margin: 1.5rem 0;
        }
        .list-input-area {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
        }
        .list-input-area .list-box {
            flex: 1 1 280px;
        }
        .list-input-area textarea {
            font-family: 'Courier New', monospace;
            font-size: 0.95rem;
            min-height: 200px;
            resize: vertical;
            background: white;
            border: 1px solid #ced4da;
            border-radius: 8px;
            padding: 0.75rem;
            width: 100%;
            transition: border-color 0.2s, box-shadow 0.2s;
        }
        .list-input-area textarea:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.2rem rgba(70, 130, 180, 0.25);
            outline: none;
        }
        .comparison-options {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            align-items: center;
            margin: 1rem 0 1.5rem;
        }
        .comparison-options .form-check {
            margin-right: 0.5rem;
        }
        .comparison-options .form-check-input:checked {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
        }
        .example-presets {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin: 0.75rem 0 0.5rem;
            align-items: center;
        }
        .example-presets .preset-btn {
            background: rgba(70, 130, 180, 0.08);
            border: 1px solid rgba(70, 130, 180, 0.2);
            border-radius: 30px;
            padding: 0.3rem 1rem;
            font-size: 0.85rem;
            color: var(--primary-color);
            cursor: pointer;
            transition: all 0.2s;
        }
        .example-presets .preset-btn:hover {
            background: rgba(70, 130, 180, 0.18);
            transform: translateY(-1px);
        }
        .stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 1rem 0;
            justify-content: center;
        }
        .stats-row .stat-item {
            background: white;
            padding: 0.5rem 1.25rem;
            border-radius: 30px;
            border: 1px solid #dee2e6;
            font-size: 0.95rem;
        }
        .stat-item .stat-number {
            font-weight: 700;
            font-size: 1.1rem;
            margin-right: 0.3rem;
        }
        .stat-item .stat-label {
            color: #6c757d;
        }
        .stat-number.green { color: #28a745; }
        .stat-number.blue { color: #0d6efd; }
        .stat-number.red { color: #dc3545; }
        .stat-number.purple { color: #6f42c1; }
        .results-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 1.5rem;
            margin: 1.5rem 0;
        }
        @media (max-width: 768px) {
            .results-grid {
                grid-template-columns: 1fr;
            }
        }
        .result-card {
            background: white;
            border-radius: 10px;
            border: 1px solid #e9ecef;
            padding: 1.25rem;
            box-shadow: 0 2px 6px rgba(0,0,0,0.03);
        }
        .result-card .card-title {
            font-weight: 600;
            font-size: 1.1rem;
            border-bottom: 2px solid #e9ecef;
            padding-bottom: 0.5rem;
            margin-bottom: 0.75rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .result-card .badge-count {
            background: var(--primary-color);
            color: white;
            border-radius: 20px;
            padding: 0.2rem 0.75rem;
            font-size: 0.8rem;
        }
        .result-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
            max-height: 280px;
            overflow-y: auto;
        }
        .result-card ul li {
            padding: 0.3rem 0.2rem;
            border-bottom: 1px solid #f1f3f5;
            font-size: 0.95rem;
            font-family: 'Courier New', monospace;
            word-break: break-word;
        }
        .result-card ul li:last-child {
            border-bottom: none;
        }
        .result-card .empty-message {
            color: #adb5bd;
            font-style: italic;
            font-size: 0.95rem;
            padding: 0.5rem 0;
        }
        .result-card.common .card-title { border-bottom-color: #28a745; }
        .result-card.only-a .card-title { border-bottom-color: #0d6efd; }
        .result-card.only-b .card-title { border-bottom-color: #dc3545; }
        .result-header-actions {
            display: flex;
            gap: 0.5rem;
            align-items: center;
            flex-wrap: wrap;
            margin: 1rem 0;
        }
        .badge-case {
            font-size: 0.75rem;
            font-weight: 400;
            background: #e9ecef;
            color: #495057;
            padding: 0.25rem 0.6rem;
            border-radius: 20px;
        }
        .legend-note {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
            font-size: 0.9rem;
            padding: 0.5rem 0;
        }
        .legend-note .legend-dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            margin-right: 0.4rem;
        }
        .legend-dot.green { background: #28a745; }
        .legend-dot.blue { background: #0d6efd; }
        .legend-dot.red { background: #dc3545; }
        .legend-dot.gray { background: #6c757d; }
        .inline-code {
            font-family: 'Courier New', monospace;
            background: #f1f3f5;
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
            font-size: 0.9rem;
        }
        .authority-note a {
            color: var(--primary-color);
        }
        .faq-accordion .accordion-item {
            border: 1px solid #e9ecef;
            margin-bottom: 0.3rem;
            border-radius: 8px;
            overflow: hidden;
        }
        .faq-accordion .accordion-button {
            font-weight: 500;
            background: #fff;
            color: #333;
            padding: 0.8rem 1rem;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(70, 130, 180, 0.05);
            color: var(--accent-color);
        }
        .faq-accordion .accordion-.related-tools-container {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .related-tool .related-name a {
            font-weight: 600;
            color: var(--primary-color);
            text-decoration: none;
        }
        .related-tool .related-desc {
            font-size: 0.85rem;
            color: #6c757d;
            margin-top: 0.3rem;
        }
        .footer h4, .footer h5 {
            color: #fff;
        }
        .footer a {
            color: rgba(255,255,255,0.7);
            text-decoration: none;
        }
        .footer a:hover {
            color: #fff;
        }
        .footer .social-icon {
            display: inline-block;
            width: 36px;
            height: 36px;
            line-height: 36px;
            text-align: center;
            background: rgba(255,255,255,0.1);
            border-radius: 50%;
            margin-right: 0.5rem;
            color: #fff;
            transition: 0.2s;
        }
        .footer .social-icon:hover {
            background: var(--primary-color);
        }
        .footer .input-group .footer .input-group .btn {
            border-radius: 0 8px 8px 0;
        }
        @media (max-width: 576px) {
            .tool-header h1 {
                font-size: 1.5rem;
            }
            .results-grid {
                gap: 1rem;
            }
            .list-input-area .list-box {
                flex: 1 1 100%;
            }
            .comparison-options {
                gap: 0.8rem;
            }
        }