body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #1a1a1a;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.center-container {
    background-color: #2a2a2a;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
    text-align: center;
    width: 90%;
    max-width: 400px;
}

.main-title {
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: #ffcc00;
}

.btn-main {
    display: block;
    margin: 10px 0;
    padding: 12px 20px;
    border: none;
    background-color: #444;
    color: white;
    text-decoration: none;
    border-radius: 10px;
    transition: background-color 0.3s, transform 0.2s;
}

.btn-main:hover {
    background-color: #666;
    transform: scale(1.03);
}

.time-note {
    margin-top: 30px;
    font-size: 0.9rem;
    color: #cccccc;
}