.expertise-box {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            border-left: 4px solid #2c5a7a;
            padding: 1.5rem;
            border-radius: 12px;
            margin: 2rem 0;
        }
        .expertise-header {
            display: flex;
            align-items: center;
            margin-bottom: 1rem;
        }
        .expertise-icon {
            font-size: 2rem;
            color: #2c5a7a;
            margin-right: 1rem;
        }
        .review-badge {
            background-color: #2c5a7a;
            color: white;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.85rem;
            display: inline-block;
            margin-bottom: 1rem;
        }
        .citation-item {
            background: white;
            border-left: 3px solid #2c5a7a;
            padding: 12px 15px;
            margin-bottom: 10px;
            border-radius: 4px;
        }
        .citation-link {
            color: #2c5a7a;
            text-decoration: none;
            font-weight: 500;
        }
        .citation-link:hover {
            text-decoration: underline;
        }
        .updated-info {
            background-color: #fff8e1;
            border: 1px solid #ffd54f;
            padding: 12px 15px;
            border-radius: 8px;
            font-size: 0.9rem;
            margin: 1.5rem 0;
        }
        .transparency-section {
            border-top: 2px solid #e0e0e0;
            padding-top: 2rem;
            margin-top: 3rem;
        }
        .transparency-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-top: 1.5rem;
        }
        .transparency-card {
            background: white;
            border: 1px solid #e0e0e0;
            border-radius: 12px;
            padding: 1.5rem;
        }
        .recommend-list {
            list-style: none;
            padding: 0;
        }
        .recommend-list li {
            background: rgba(70, 130, 180, 0.05);
            margin-bottom: 8px;
            padding: 10px 12px;
            border-radius: 12px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 500;
        }
        .cycle-badge {
            background-color: var(--primary-color);
            color: white;
            border-radius: 40px;
            padding: 4px 12px;
            font-size: 0.8rem;
        }
        .sleep-timeline-canvas {
            width: 100%;
            background: #fef9e8;
            border-radius: 16px;
            border: 1px solid #e9ecef;
            margin-top: 1rem;
        }
        .science-fact {
            background: #eef2fa;
            border-radius: 20px;
            padding: 1.2rem;
            margin: 1.5rem 0;
        }
        .mode-card {
            background: #ffffff;
            border-radius: 24px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.03);
            border: 1px solid #eef2f6;
            transition: 0.2s;
            height: 100%;
        }
        .mode-card:hover {
            border-color: #b9d0f0;
        }
        .legend {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            font-size: 0.8rem;
            margin-top: 8px;
        }
        .ref-box {
            background: #f8fafc;
            border-left: 4px solid #2c5a7a;
            padding: 1rem 1.2rem;
            border-radius: 16px;
            margin: 1.5rem 0;
        }
        .disclaimer-box {
            background: #fff6e5;
            border-radius: 12px;
            padding: 0.8rem 1rem;
            font-size: 0.85rem;
            margin: 1rem 0;
        }
        @media (max-width: 768px) {
            .recommend-list li {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .transparency-grid {
                grid-template-columns: 1fr;
            }
        }