body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #0f0f0f;
    color: #e0e0e0;
    line-height: 1.8;
    margin: 0;
    padding: 0;
    transition: background-color 0.5s ease, color 0.5s ease;
}
header, footer {
    background: #1c1c1c;
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.5);
}
header h2 {
    margin: 0;
    font-size: 1.8em;
}
a {
    color: #f1850e;
    text-decoration: none;
    transition: color 0.3s ease;
}
a:hover {
    color: #66e0ff;
}
nav a {
    margin: 0 12px;
    font-weight: bold;
    position: relative;
}
nav a::after {
    content: "";
    position: absolute;
    width: 0;
    height: 2px;
    background: #f1850e;
    left: 0;
    bottom: -5px;
    transition: 0.3s;
}
nav a:hover::after {
    width: 100%;
}
main {
    max-width: 860px;
    margin: 30px auto;
    padding: 0 20px;
    animation: fadeIn 0.7s ease;
}
h1, h2 {
    color: #ffffff;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background-color: #1a1a1a;
    box-shadow: 0 0 8px rgba(0,0,0,0.3);
}
th, td {
    padding: 12px 15px;
    border: 1px solid #333;
}
th {
    background-color: #222;
}
ul, ol {
    margin: 20px 0;
    padding-left: 20px;
}
footer {
    font-size: 0.9em;
    color: #aaa;
    border-top: 1px solid #333;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
@media screen and (max-width: 768px) {
    nav a {
        display: block;
        margin: 10px 0;
    }
    main {
        padding: 0 15px;
    }
}