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

body {
    font-family: Arial, sans-serif;
    font-size: 15pt;
    background-color: #e8f4fc;
    color: #1a3a4a;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background-color: #06a9fa;
    color: #ffffff;
    padding: 2rem;
    text-align: center;
}

h1 {
    font-size: 2.2rem;
    letter-spacing: 1px;
    margin-bottom: 0.2rem;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1rem;
    padding: 0;
}

nav li {
    display: inline;
}

nav a {
    color: #ffffff;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s;
}

nav a:hover {
    background-color: #cceeff;
    color: #1a3a4a;
}

main {
    max-width: 800px;
    width: 100%;
    margin: 2rem auto;
    padding: 0 1.5rem;
    flex: 1;
}

section {
    background-color: #ffffff;
    border-left: 5px solid #4fc3d7;
    border-radius: 6px;
    padding: 1.2rem 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 6px rgba(33, 150, 166, 0.1);
}

h2 {
    font-size: 1.2rem;
    color: #2196a6;
    margin-bottom: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

ul, ol {
    padding-left: 1.4rem;
}

li {
    padding: 0.3rem 0;
    font-size: 0.95rem;
}

footer {
    background-color: #b3dff0;
    color: #1a3a4a;
    text-align: center;
    padding: 1rem;
    font-size: 0.85rem;
}