@charset "UTF-8";

/* ==================================================
   SEO解説コンテンツ：ベース（PC向け）スタイル
================================================== */
.seo-content-area {
    margin-top: 60px;
    padding: 40px 20px;
    background-color: #f4f6f8;
    border-top: 2px solid #ccc;
    font-family: 'Hiragino Kaku Gothic ProN', 'Meiryo', 'メイリオ', sans-serif;
    line-height: 1.9;
    color: #111111;
}

.seo-content-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.seo-main-heading {
    font-size: 28px;
    font-weight: bold;
    color: #000000;
    margin-bottom: 24px;
    border-bottom: 4px solid #0056b3;
    padding-bottom: 12px;
    letter-spacing: 0.04em;
}

.seo-lead-text {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 35px;
    color: #222222;
}

.seo-card {
    margin-bottom: 40px;
    background-color: #ffffff;
    padding: 30px 25px;
    border-radius: 8px;
    border: 1px solid #d0d7de;
    box-shadow: 0 3px 6px rgba(0,0,0,0.05);
}

.seo-card-heading {
    font-size: 23px;
    font-weight: bold;
    color: #004085;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    letter-spacing: 0.02em;
}

.seo-card-badge {
    background-color: #0056b3;
    color: #ffffff;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-right: 12px;
    flex-shrink: 0;
    font-weight: bold;
}

.seo-card-lead {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #222222;
}

.seo-list {
    font-size: 17px;
    font-weight: 500;
    padding-left: 24px;
    margin: 0;
    color: #222222;
}

.seo-list li {
    margin-bottom: 12px;
}

.seo-list li:last-child {
    margin-bottom: 0;
}

.seo-list li strong {
    font-size: 18px;
    color: #000000;
}

.seo-highlight {
    background-color: #fff2a8;
    color: #000000;
    padding: 2px 4px;
    font-weight: bold;
}

/* --- テーブル（PC） --- */
.seo-table-wrapper {
    margin-top: 15px;
}

.seo-table {
    width: 100%;
    border-collapse: collapse;
    background-color: #ffffff;
    text-align: left;
    font-size: 16px;
}

.seo-table th {
    padding: 16px;
    border: 1px solid #004085;
    background-color: #004085;
    color: #ffffff;
    font-size: 18px;
    font-weight: bold;
}

.seo-table td {
    padding: 16px;
    border: 1px solid #ccc;
    font-weight: 500;
    color: #222222;
}

.seo-table tr.bg-light {
    background-color: #f0f4f8;
}

.seo-table td.bg-gray {
    background-color: #f9f9f9;
}

.sp-label {
    display: none; /* PCではラベル非表示 */
}

/* --- サブボックス --- */
.seo-subbox {
    background-color: #f0f4f8;
    border-left: 6px solid #0056b3;
    padding: 22px 24px;
    margin-bottom: 20px;
    border-radius: 0 8px 8px 0;
}

.seo-subbox-title {
    font-size: 19px;
    font-weight: bold;
    margin-bottom: 12px;
    color: #000000;
}

/* ==================================================
   SEO解説コンテンツ：スマホ（SP向け：画面幅 768px 以下）表示制御
================================================== */
@media screen and (max-width: 768px) {
    .seo-content-area {
        margin-top: 30px;
        padding: 20px 12px;
    }

    .seo-main-heading {
        font-size: 20px;
        border-bottom-width: 3px;
        margin-bottom: 16px;
        padding-bottom: 8px;
    }

    .seo-lead-text {
        font-size: 15px;
        line-height: 1.7;
        margin-bottom: 20px;
    }

    .seo-card {
        padding: 18px 14px;
        margin-bottom: 20px;
    }

    .seo-card-heading {
        font-size: 17px;
        margin-bottom: 12px;
    }

    .seo-card-badge {
        width: 28px;
        height: 28px;
        font-size: 15px;
        margin-right: 8px;
    }

    .seo-card-lead {
        font-size: 15px;
        margin-bottom: 14px;
    }

    .seo-list {
        font-size: 14px;
        padding-left: 18px;
    }

    .seo-list li {
        margin-bottom: 10px;
    }

    .seo-list li strong {
        font-size: 15px;
    }

    .seo-subbox {
        padding: 14px 12px;
        border-left-width: 4px;
    }

    .seo-subbox-title {
        font-size: 16px;
        margin-bottom: 8px;
    }

    /* スマホ時：テーブルのカード型縦並び化 */
    .seo-table, 
    .seo-table thead, 
    .seo-table tbody, 
    .seo-table th, 
    .seo-table td, 
    .seo-table tr {
        display: block;
        width: 100%;
        box-sizing: border-box;
    }

    .seo-table thead {
        display: none;
    }

    .seo-table tr {
        margin-bottom: 15px;
        border: 1px solid #004085;
        border-radius: 6px;
        overflow: hidden;
        background-color: #ffffff !important;
    }

    .seo-table tr:last-child {
        margin-bottom: 0;
    }

    .seo-table td {
        padding: 10px 12px;
        border: none;
        border-bottom: 1px solid #eee;
        font-size: 14px;
    }

    .seo-table td:last-child {
        border-bottom: none;
    }

    .seo-table td:nth-of-type(1) {
        background-color: #004085 !important;
        color: #ffffff !important;
        font-size: 16px;
        font-weight: bold;
        padding: 10px 12px;
    }

    /* スマホ時に見出しラベルを表示 */
    .sp-label {
        display: block;
        font-weight: bold;
        color: #0056b3;
        margin-bottom: 4px;
        font-size: 13px;
    }
}