body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f7f6;
    margin: 0;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

h1 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 30px;
}

.filter-form {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-bottom: 40px;
    padding: 20px;
    background: #e9ecef;
    border-radius: 8px;
}

.filter-form label {
    font-weight: bold;
}

.filter-form select {
    padding: 8px 12px;
    font-size: 16px;
    border-radius: 5px;
    border: 1px solid #ccc;
    min-width: 300px;
}

.filter-form button {
    padding: 8px 20px;
    font-size: 16px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.filter-form button:hover {
    background-color: #2980b9;
}

.content h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 30px;
    font-size: 1.5em;
}

.doc-section {
    margin-bottom: 40px;
    border-top: 2px solid #eee;
    padding-top: 20px;
}

.doc-section h3 {
    color: #2980b9;
    margin-bottom: 15px;
    font-size: 1.2em;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

th, td {
    border: 1px solid #dee2e6;
    padding: 10px;
    text-align: left;
}

th {
    background-color: #f8f9fa;
    color: #495057;
    font-weight: bold;
}

tr:nth-child(even) {
    background-color: #fdfdfd;
}

tr:hover {
    background-color: #f1f4f7;
}