* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, sans-serif;
    background-color: #BEC7FC;
    color: #333;
    line-height: 1.6;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

h1, h2 {
    color: #2a2f4c;
    margin: 1.5rem 0 1rem 0;
}

h1 {
    font-size: 2.5rem;
    border-bottom: 3px solid #8493fc;
    padding-bottom: 0.5rem;
}

h2 {
    font-size: 1.8rem;
    border-bottom: 2px solid #8493fc;
    padding-bottom: 0.3rem;
}

p {
    margin: 1rem 0;
}

ul {
    margin: 1rem 0 1rem 2rem;
}

li {
    margin: 0.5rem 0;
}

ul ul {
    margin: 0.5rem 0 0.5rem 2rem;
}

a {
    color: #4455cc;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.diagram-image {
    border: 4px solid white;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.8);
    max-width: 1000px;
    transition: all 0.3s ease;
}

.diagram-image:hover {
    border: 4px solid #8493fc;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.8);
}