:root {
            --primary-blue: #1e40af;
            --secondary-teal: #0d9488;
            --accent-gold: #d97706;
            --light-bg: #f0f9ff;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            overflow-x: hidden;
        }
        .nav-scrolled {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .hero-gradient {
            background: linear-gradient(135deg, rgba(30, 64, 175, 0.85) 0%, rgba(13, 148, 136, 0.8) 100%);
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card-hover:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
        }
        .flink {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1.25rem;
            margin: 0.25rem;
            background-color: #f8fafc;
            border: 1px solid #e2e8f0;
            border-radius: 50px;
            color: #475569;
            font-weight: 500;
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .flink:hover {
            background-color: var(--primary-blue);
            color: white;
            border-color: var(--primary-blue);
            transform: scale(1.05);
        }
        .doctor-card {
            border-top: 4px solid transparent;
            transition: all 0.4s ease;
        }
        .doctor-card:hover {
            border-top-color: var(--secondary-teal);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease-out;
        }
        input:checked ~ .accordion-content {
            max-height: 500px;
        }
        .department-icon {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            background-color: #e0f2fe;
            color: var(--primary-blue);
            font-size: 1.75rem;
        }
        @media (max-width: 768px) {
            .mobile-stack {
                flex-direction: column;
            }
            .hero-heading {
                font-size: 2.25rem;
            }
        }