:root {
            --aiims-blue: #0056A3;
            --aiims-light-blue: #E6F0FA;
            --aiims-accent: #D32F2F;
            --aiims-dark: #1A2E40;
            --aiims-gray: #6C757D;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            color: #333;
            line-height: 1.6;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--aiims-dark);
        }
        .hero-section {
            background: linear-gradient(rgba(0, 84, 163, 0.85), rgba(0, 84, 163, 0.9)), url('https://images.unsplash.com/photo-1586773860418-dc22f8b874bc?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
            color: white;
            padding: 8rem 0;
            position: relative;
        }
        .nav-main {
            background-color: white;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1030;
        }
        .nav-main .navbar-brand {
            font-weight: 800;
            color: var(--aiims-blue);
            font-size: 1.8rem;
        }
        .nav-main .nav-link {
            font-weight: 600;
            color: var(--aiims-dark);
            margin: 0 0.5rem;
            transition: color 0.3s;
        }
        .nav-main .nav-link:hover {
            color: var(--aiims-blue);
        }
        .nav-main .nav-link.active {
            color: var(--aiims-accent);
            border-bottom: 3px solid var(--aiims-accent);
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 3rem;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background-color: var(--aiims-accent);
        }
        .section-title.text-center:after {
            left: 50%;
            transform: translateX(-50%);
        }
        .card-feature {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
            transition: transform 0.4s, box-shadow 0.4s;
            height: 100%;
        }
        .card-feature:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
        }
        .card-feature .card-icon {
            font-size: 2.5rem;
            color: var(--aiims-blue);
            margin-bottom: 1.5rem;
        }
        .btn-aiims-primary {
            background-color: var(--aiims-blue);
            color: white;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            border: 2px solid var(--aiims-blue);
            transition: all 0.3s;
        }
        .btn-aiims-primary:hover {
            background-color: transparent;
            color: var(--aiims-blue);
        }
        .btn-aiims-secondary {
            background-color: transparent;
            color: var(--aiims-blue);
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            border: 2px solid var(--aiims-blue);
            transition: all 0.3s;
        }
        .btn-aiims-secondary:hover {
            background-color: var(--aiims-blue);
            color: white;
        }
        .department-card {
            border-left: 5px solid var(--aiims-blue);
            background-color: var(--aiims-light-blue);
            transition: all 0.3s;
        }
        .department-card:hover {
            background-color: white;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
        }
        footer {
            background-color: var(--aiims-dark);
            color: #ddd;
        }
        footer a {
            color: #bbb;
            text-decoration: none;
            transition: color 0.3s;
        }
        footer a:hover {
            color: white;
        }
        .flink {
            display: inline-block;
            background: rgba(255, 255, 255, 0.05);
            padding: 8px 20px;
            margin: 5px;
            border-radius: 4px;
            color: #ccc;
            transition: all 0.3s;
        }
        .flink:hover {
            background: rgba(255, 255, 255, 0.1);
            color: white;
            transform: translateY(-2px);
        }
        .news-card {
            border-bottom: 3px solid transparent;
            transition: all 0.3s;
        }
        .news-card:hover {
            border-bottom-color: var(--aiims-accent);
        }
        .stats-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--aiims-blue);
            line-height: 1;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--aiims-blue);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: var(--aiims-accent);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 5rem 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .stats-number {
                font-size: 2.5rem;
            }
        }