.period_switch_container {
    width: 720px;
    margin: 16px auto;
    text-align: center;
    max-width: 100%;
}


.period_ranking_btn {
    display: inline-block;
    max-width: 200px;
    width: 100%;
    padding: 10px 20px;
    margin: 8px 5px;
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}


.period_ranking_btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.period_ranking_btn.active {
    background: linear-gradient(135deg, #ff512f 0%, #f09819 100%);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
    transform: translateY(1px);
}