body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: linear-gradient(135deg, #f8fafc 0%, #1a237e 100%);
    margin: 0;
    padding: 0;
}
.container {
    max-width: 900px;
    margin: 3em auto;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.08);
    padding: 2em;
}
h1 {
    color: #1a237e;
    margin-bottom: 1em;
    text-align: center;
}
.pub {
    background: #e3e7f7;
    border-left: 5px solid #1a237e;
    padding: 15px;
    margin: 20px 0;
    font-size: 1.1em;
}
ul {
    list-style: none;
    padding: 0;
    display: flex;
    gap: 1em;
    justify-content: center;
}
ul li a {
    background: #1a237e;
    color: #fff;
    border-radius: 8px;
    padding: 0.6em 1.2em;
    text-decoration: none;
    font-weight: 500;
    transition: background 0.2s;
}
ul li a:hover {
    background: #0d1335;
}
table {
    border-collapse: collapse;
    width: 100%;
    margin-top: 20px;
    margin-bottom: 2em;
    background: #f8fafc;
    border-radius: 8px;
    overflow: hidden;
}
th, td {
    border: 1px solid #cbd5e1;
    padding: 10px;
    text-align: left;
}
th {
    background: #e3e7f7;
    color: #1a237e;
}
h2 {
    color: #1a237e;
    margin-top: 2em;
}
.error {
    color: #ef4444;
    font-weight: bold;
    margin-bottom: 1em;
}