/* Global */
body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    color: #333;
    background-color: #f9f9f9;
}

/* Navigation Bar */
nav {
    background-color: #004B87;
    display: flex;
    justify-content: center;
    padding: 15px;
    position: sticky;
    top: 0;
    z-index: 1000;
}

    nav a {
        color: #fff;
        margin: 0 20px;
        text-decoration: none;
        font-weight: bold;
        transition: color 0.3s ease;
    }

        nav a:hover {
            color: #00A651;
        }

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0,114,198,0.7), rgba(0,166,81,0.7)), url('/images/hero-bg.jpg') no-repeat center center;
    background-size: cover;
    color: #fff;
    text-align: center;
    padding: 120px 20px;
}

    .hero h1 {
        font-size: 3em;
        margin-bottom: 20px;
    }

    .hero p {
        font-size: 1.3em;
        margin-bottom: 30px;
    }

.cta-group {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.cta-main, .cta-secondary {
    padding: 14px 28px;
    border-radius: 6px;
    font-size: 1em;
    text-decoration: none;
    transition: background 0.3s ease;
}

.cta-main {
    background-color: #00A651;
    color: #fff;
}

    .cta-main:hover {
        background-color: #008f45;
    }

.cta-secondary {
    background-color: #fff;
    color: #0072c6;
    border: 2px solid #0072c6;
}

    .cta-secondary:hover {
        background-color: #0072c6;
        color: #fff;
    }

/* Framework Section */
.framework {
    background-color: #fff;
    padding: 60px 20px;
    text-align: center;
}

    .framework h2 {
        font-size: 2em;
        margin-bottom: 30px;
    }

.flow {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

    .flow div {
        background-color: #f0f0f0;
        border-radius: 8px;
        padding: 20px;
        width: 160px;
        transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

        .flow div:hover {
            transform: translateY(-5px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        }

/* Teaching Aid Section */
.teaching {
    background-color: #e6f7ff;
    padding: 60px 20px;
    text-align: center;
}

    .teaching h2 {
        font-size: 2em;
        margin-bottom: 20px;
    }

    .teaching a {
        background-color: #0072C6;
        color: #fff;
        padding: 12px 24px;
        border-radius: 4px;
        text-decoration: none;
        font-weight: bold;
        transition: background 0.3s ease;
    }

        .teaching a:hover {
            background-color: #004B87;
        }

/* Footer */
footer {
    background-color: #004B87;
    color: #fff;
    text-align: center;
    padding: 20px;
    font-size: 0.9em;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2em;
    }

    .cta-group {
        flex-direction: column;
    }

    .flow div {
        width: 100%;
    }