body {
    font-family: "kozuka-gothic-pr6n", sans-serif;
    background-color: #f6f6f6;
    color: #333;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    width: 100%;
    box-sizing: border-box;
    line-height: 26px;
    letter-spacing: -1px;
}

/* 数字専用フォント */
.number-font {
    font-family:"Arial", sans-serif;
    /* font-weight: 700; */
}

/* ヘッダー */
.header {
    background-color: #b71c1c;
    padding: 15px 0 8px;
    text-align: center;
}

.logo img {
    max-width: 200px;
}

/* 共通ボタン */
.button {
    display: inline-block;
    padding: 8px 12px;
    font-size: 14px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.2s;
}

.button:active {
    transform: scale(0.95);
    opacity: 0.8;
}

/* 詳細ボタン */
.detail-button {
    display: inline-block;
    border: 2px solid #b71c1c;
    border-radius: 50%;
    padding: 6px 6px;
    font-size: 14px;
    text-align: center;
    transition: all 0.2s;
    font-weight: normal;
}

.detail-button:active {
    transform: scale(0.9);
}

.flex{
    display: flex;
}

/* フェードインアニメーション */
.fade-in {
    opacity: 0;
    transform: translateY(10px);
    animation: fadeIn 0.6s ease-in-out forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.secret{
    font-size: 12px;
    color: #f70707;
    text-align: center;
}