body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #181a20;
    color: #f1f1f1;
}
header {
    background: #23263a;
    color: #fff;
    padding: 2rem 1rem 1rem 1rem;
    text-align: center;
    border-bottom: 2px solid #3949ab;
}
header h1 {
    margin: 0;
    font-size: 2rem;
    font-weight: bold;
}
header h2 {
    margin: 0.5rem 0 0 0;
    font-size: 1.2rem;
    font-weight: normal;
}
main {
    max-width: 900px;
    margin: 2rem auto;
    padding: 1rem;
    background: #23263a;
    border-radius: 8px;
    box-shadow: 0 2px 16px rgba(0,0,0,0.4);
}
section {
    margin-bottom: 2rem;
}
section h2, section h4 {
    color: #7ea6ff;
    margin-top: 0;
}
ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}
img {
    max-width: 100%;
    border-radius: 6px;
    margin: 1rem 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.5);
}
footer {
    background: #23263a;
    color: #fff;
    text-align: center;
    padding: 1rem;
    position: relative;
    bottom: 0;
    width: 100%;
    border-top: 2px solid #3949ab;
}
a {
    color: #7ea6ff;
    text-decoration: none;
    transition: color 0.2s;
}
a:hover {
    color: #fff;
    text-decoration: underline;
}