body {
    font-family: "Segoe UI", Arial, sans-serif;
    background: #f0f2f5;
    margin: 0;
    padding: 0;
}
header {
    background: #4a90e2;
    color: #fff;
    padding: 20px;
    text-align: center;
}
h1 {
    margin: 0;
    font-size: 28px;
}
main {
    max-width: 800px;
    margin: 10px auto 20px auto;
    padding: 20px;
}
.link-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 20px;
    margin-bottom: 20px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.link-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.link-card h2 {
    margin: 0;
    color: #4a90e2;
    font-size: 20px;
    cursor: pointer;
}
.details {
    margin-top: 10px;
    display: none;
}
a {
    margin: 8px 0;
    display: block;
    text-decoration: none;
}
a:link {
    color: #0b0ceb;
    font-weight: 500;
}
a:visited {
    color: #0c8918;
}
a:hover {
    font-weight: 1000;
    color: #f00056;
}
a:active {
    color: #70f3ff;
}
footer {
    text-align: center;
    padding: 15px;
    font-size: 14px;
    color: #888;
}