* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    padding: 40px;
    max-width: 600px;
    width: 100%;
}

h1 {
    color: #333;
    text-align: center;
    margin-bottom: 30px;
    font-size: 2.5em;
}

h2 {
    color: #555;
    text-align: center;
    margin-bottom: 20px;
    font-size: 2em;
}

.menu {
    list-style: none;
    padding: 0;
}

.menu li {
    margin-bottom: 15px;
}

.menu a {
    display: block;
    padding: 15px 25px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    text-align: center;
    font-size: 1.2em;
    font-weight: 500;
    transition: transform 0.2s, box-shadow 0.2s;
}

.menu a:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.content {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 20px;
    line-height: 1.6;
}

.content p {
    color: #555;
    font-size: 1.1em;
    margin-bottom: 15px;
}

.back-link {
    display: inline-block;
    padding: 12px 30px;
    background: #6c757d;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    text-align: center;
    font-size: 1em;
    transition: background 0.2s;
}

.back-link:hover {
    background: #5a6268;
}