@charset "utf-8";

/* =====================================
   学習コース・説明ページ共通CSS
===================================== */

/* ページ全体 */
body {
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Hiragino Kaku Gothic ProN",
        "Yu Gothic",
        Meiryo,
        sans-serif;

    background: #f5f7f5;
    color: #333;
    margin: 0;
    padding: 0;
    line-height: 1.9;
}

/* =====================================
   説明ページの外枠
===================================== */

.explain-box {
    width: 100%;
    max-width: 980px;
    margin: 30px auto;
    padding: 30px 20px;

    background: #fff;
    border: 1px solid #ddd;
    border-radius: 12px;
    box-sizing: border-box;
}

/* =====================================
   大見出し h1
===================================== */

.explain-box h1 {
    font-size: 30px;
    font-weight: bold;
    color: #185c35;
    text-align: center;

    margin: 0 0 35px;
    padding: 0 0 15px;

    border-bottom: 4px solid #398052;
    line-height: 1.5;
}

/* =====================================
   中見出し h2
===================================== */

.explain-box h2 {
    font-size: 27px;
    font-weight: bold;
    color: #fff;
    text-align: left;

    background: #20643b;
    border-left: 7px solid #e5aa40;
    border-radius: 4px;

    padding: 12px 18px;
    margin: 48px 0 22px;
    line-height: 1.5;
}

/* =====================================
   小見出し h3
===================================== */

.explain-box h3 {
    font-size: 25px;
    font-weight: bold;
    color: #185c35;

    background: #eaf4ec;
    border-left: 5px solid #398052;

    padding: 10px 15px;
    margin: 32px 0 16px;
    line-height: 1.6;
}

/* =====================================
   本文 p
===================================== */

.explain-box p {
    font-size: 25px;
    line-height: 1.95;

    margin: 0 0 20px;
    text-align: left;
    overflow-wrap: anywhere;
}

/* 重要な言葉 */
.explain-box strong {
    font-weight: 700;
    color: #922d26;
}

/* =====================================
   コースのキャッチコピー
===================================== */

.explain-box .lead {
    font-size: 25px;
    font-weight: bold;
    color: #185c35;

    line-height: 1.8;
    margin: 10px 0 22px;
}

/* =====================================
   特に伝えたい内容
===================================== */

.explain-box .point {
    background: #f3f8f3;
    border-left: 5px solid #398052;
    border-radius: 4px;

    padding: 18px 22px;
    margin: 25px 0;
}

.explain-box .point p:last-child {
    margin-bottom: 0;
}

/* =====================================
   コースの組み合わせ
===================================== */

.explain-box .course-combination {
    background: #f8faf8;
    border: 1px solid #d6e3d7;
    border-radius: 8px;

    padding: 20px 24px;
    margin: 22px 0;
}

.explain-box .course-combination h3 {
    margin: 0 0 12px;
    padding: 0;
    background: none;
    border-left: none;
}

.explain-box .course-combination p:last-child {
    margin-bottom: 0;
}

/* =====================================
   最後のメッセージ
===================================== */

.explain-box .closing {
    background: #eef6ed;
    border: 1px solid #c8dfc8;
    border-radius: 10px;

    padding: 25px 30px;
    margin-top: 40px;
}

.explain-box .closing h2 {
    margin: 0 0 22px;
}

.explain-box .closing p:last-child {
    margin-bottom: 0;
}

/* =====================================
   スマートフォン用
   画面幅600px以下
===================================== */

@media screen and (max-width: 600px) {

    .explain-box {
        width: 100%;
        margin: 5px auto;
        padding: 20px 15px;
        border-radius: 0;
    }

    /* 大見出し */
    .explain-box h1 {
        font-size: 25px; /* 25px */
        margin-bottom: 28px;
    }

    /* 中見出し */
    .explain-box h2 {
        font-size: 21px; /* 21px */
        padding: 11px 13px;
        margin: 36px 0 18px;
    }

    /* 小見出し */
    .explain-box h3 {
        font-size: 18px; /* 18px */
        padding: 9px 12px;
        margin: 27px 0 14px;
    }

    /* 本文 */
    .explain-box p {
        font-size: 23px; /* 16px */
        line-height: 1.85;
        margin-bottom: 18px;
    }

    /* キャッチコピー */
    .explain-box .lead {
        font-size: 23px; /* 18px */
    }

    /* 各種案内枠 */
    .explain-box .point,
    .explain-box .course-combination,
    .explain-box .closing {
        padding: 15px;
    }
}


/* =====================================
   更新記録ページ
===================================== */

.update-item {
    background: #fff;
    border: 1px solid #ddd;
    border-left: 5px solid #006400;
    border-radius: 6px;
    padding: 16px 20px;
    margin: 15px 0;
}

/* 日付と更新区分 */
.update-heading {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.update-heading time {
    font-size: 17px;
    font-weight: bold;
    color: #333;
}

/* 更新区分 */
.update-category {
    display: inline-block;
    background: #e8f3e8;
    color: #006400;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: bold;
}

/* 更新内容 */
.update-content {
    font-size: 16px;
    line-height: 1.9;
    margin: 8px 0 12px;
    overflow-wrap: anywhere;
}

/* 関連ページ */
.update-link {
    margin: 10px 0 0;
}

.update-link a {
    color: #006400;
    text-decoration: underline;
    font-weight: bold;
}

.update-link a:hover {
    color: #ff8c00;
}

/* スマートフォン対応 */
@media screen and (max-width: 600px) {

    .update-item {
        padding: 12px 14px;
    }

    .update-heading {
        gap: 8px;
    }

    .update-heading time {
        font-size: 15px;
    }

    .update-category {
        font-size: 13px;
    }

    .update-content {
        font-size: 15px;
        line-height: 1.8;
    }
}