* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Noto Sans Devanagari', sans-serif;
}

body {
    background: #f4f7fb;
}

/* Header */
.main-header {
    background: linear-gradient(135deg, #003366, #00509e);
    color: white;
    text-align: center;
    padding: 50px 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.main-header h1 {
    font-size: 32px;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 18px;
}

/* Activities Section */
.activities-section {
    padding: 60px 8%;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 25px;
}

/* Activity Card */
.activity-card {
    background: #ffffff;
    padding: 20px;
    text-align: center;
    font-size: 16px;
    font-weight: 500;
    border-left: 5px solid #00509e;
    border-radius: 10px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.1);
    transition: 0.3s ease;
}

.activity-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 25px rgba(0,0,0,0.2);
    background: #eaf3ff;
}

/* Footer */
footer {
    background: #003366;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: 50px;
}

/* Responsive */
@media (max-width: 768px) {
    .main-header h1 {
        font-size: 24px;
    }

    .activities-section {
        padding: 40px 5%;
        gap: 15px;
    }
    
    .activity-card {
        padding: 16px;
        font-size: 14px;
        border-left: 4px solid #00509e;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }
    
    .main-header {
        padding: 30px 15px;
    }

    .main-header h1 {
        font-size: 18px;
        margin-bottom: 8px;
    }

    .activities-section {
        padding: 20px 3%;
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .activity-card {
        padding: 12px;
        font-size: 13px;
        border-left: 3px solid #00509e;
    }
}