/*
 * C案「島の余白 × 山と歩く」
 * B案の青・文字組み・余白に、A案の直線的な写真の角と色の重なりを重ねる。
 */
.ikou-design-c {
    --c-layer: #82adbf;
    --c-layer-deep: #1c526a;
    --c-layer-pale: #c8dbe1;
}

/* B案の丸い装飾・情報枠は使わず、直線の構成に統一する。 */
.ikou-design-c .ikou_title::before,
.ikou-design-c > section:first-child::after,
.ikou-design-c > section:nth-of-type(2)::before,
.ikou-design-c > section:nth-of-type(5)::before {
    display: none;
}

/* 上部メニュー69pxとヒーローで、表示画面の高さに収める。 */
.ikou-design-c > section:first-child,
.ikou-design-c .ikou_top {
    min-height: 0;
    height: calc(100vh - 69px);
    height: calc(100dvh - 69px);
}

.ikou-design-c .ikou_title {
    justify-content: center;
    align-items: center;
    padding: 0;
}

.ikou-design-c .ikou-hero-heading {
    display: flex;
    align-items: flex-start;
    gap: clamp(10px, 2vw, 24px);
    margin: 0;
    padding: 0;
    color: #fff;
    font-family: 'Yu Mincho', 'Hiragino Mincho ProN', serif;
    font-weight: 600;
    text-shadow: 0 5px 5px rgba(0, 0, 0, .55);
}

.ikou-design-c .ikou-hero-heading > span {
    display: block;
    writing-mode: vertical-rl;
    text-orientation: upright;
    white-space: nowrap;
    line-height: 1.15;
}

.ikou-design-c .ikou-hero-main {
    padding-top: .4em;
    font-size: clamp(44px, min(7vw, 10vh), 80px);
    letter-spacing: .32em;
}

.ikou-design-c .ikou-hero-sub {
    font-size: clamp(25px, min(4vw, 5.5vh), 44px);
    letter-spacing: .12em;
}

/* 各セクションの主見出しを中央にそろえる。 */
.ikou-design-c > section:not(:first-child) .title-m-fix,
.ikou-design-c > section:not(:first-child) > .spnewsContents > .ikou_heading {
    text-align: center;
    text-indent: 0;
}

.ikou-design-c .ikou-box {
    border-radius: 0;
}

/* 導入も見出し、本文の順に縦に配置する。 */
.ikou-design-c > section:nth-of-type(2) .spnewsContents {
    display: block;
}

/* 見出し以外の本文は左でそろえ、段落の始まりを一字下げする。 */
.ikou-design-c .ikou-intro-copy > p,
.ikou-design-c .spnewsContents > p,
.ikou-design-c .spnews-column-Main > p:not(.ikou_heading),
.ikou-design-c .ikou_center_vert > p,
.ikou-design-c .ikou-box > p:not(.ikou_heading) {
    text-align: left;
    text-indent: 1em;
}

/* 明示的な改行の後にも、全角空白一字分の下げを加える。 */
.ikou-design-c .ikou-intro-copy > p br::after,
.ikou-design-c .spnewsContents > p br::after,
.ikou-design-c .spnews-column-Main > p:not(.ikou_heading) br::after,
.ikou-design-c .ikou_center_vert > p br::after,
.ikou-design-c .ikou-box > p:not(.ikou_heading) br::after {
    content: '\3000';
}

.ikou-design-c .ikou-intro-columns {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
}

.ikou-design-c .ikou-quick-info {
    padding: clamp(24px, 3vw, 36px);
    border-top: 3px solid var(--b-blue);
    background: var(--b-sky);
    text-align: left;
    line-height: 1.8;
}

.ikou-design-c .ikou-quick-info h3 {
    margin: 0 0 20px;
    color: var(--b-blue);
    font-size: 1.35em;
    font-weight: 500;
}

.ikou-design-c .ikou-quick-info dl { margin: 0; }
.ikou-design-c .ikou-quick-info dl > div {
    display: grid;
    grid-template-columns: 4em minmax(0, 1fr);
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--b-line);
}
.ikou-design-c .ikou-quick-info dt { font-weight: 500; }
.ikou-design-c .ikou-quick-info dd { margin: 0; }
.ikou-design-c .ikou-quick-info dl > .ikou-quick-date {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
}
.ikou-design-c .ikou-quick-date dt {
    color: var(--b-blue);
    font-weight: 700;
}
.ikou-design-c .ikou-quick-date strong {
    color: var(--b-blue);
    font-size: clamp(22px, 2.5vw, 28px);
    font-weight: 700;
    line-height: 1.6;
}

/* 募集要項の小見出しだけを中央にそろえる。 */
.ikou-design-c > section:nth-of-type(5) .spnews-column-Main:last-child .ikou-box > p > .ikou_heading {
    display: block;
    text-align: center;
    text-indent: 0;
}

/* スケジュールの見出しと開催日を、画面幅を問わず中央にそろえる。 */
.ikou-design-c > section:nth-of-type(5) .spnews-column-Main:first-child > .ikou_heading,
.ikou-design-c .ikou_sched > .alignenter {
    text-align: center;
    text-indent: 0;
}

/* Keep the continuation marks centered in the time column. */
.ikou-design-c .ikou_sched tr:nth-of-type(4) .ikou_sched_time,
.ikou-design-c .ikou_sched tr:nth-of-type(5) .ikou_sched_time {
    padding-right: 0;
    padding-left: 0;
    text-align: center;
}

/* 諸注意の小見出しも、本文から独立して中央にそろえる。 */
.ikou-design-c > section:nth-of-type(6) .ikou-box > p > .ikou_heading {
    display: block;
    text-align: center;
    text-indent: 0;
}
.ikou-design-c .ikou-quick-info dd span {
    font-size: 16px;
}
.ikou-design-c .ikou-quick-note { display: block; margin-top: 6px; }
.ikou-design-c .ikou-quick-link {
    display: inline-block;
    margin-top: 24px;
    padding: 10px 24px;
    color: var(--b-foam);
    background: var(--b-blue);
    border: 1px solid var(--b-blue);
    text-decoration: none;
}
.ikou-design-c .ikou-quick-link:hover { background: var(--b-ink); }
.ikou-design-c .ikou-quick-link:focus-visible {
    outline: 2px solid var(--b-ink);
    outline-offset: 4px;
}
.ikou-design-c #ikou-details { scroll-margin-top: 130px; }

@media (max-width: 979px) {
    .ikou-design-c .ikou-intro-columns { grid-template-columns: minmax(0, 1fr); gap: 24px; }
}
@media (max-width: 479px) {
    .ikou-design-c .ikou-quick-info dl > div { grid-template-columns: minmax(0, 1fr); gap: 4px; }
}

/* 写真は曲線を使わず、色面をずらして輪郭をつくる。 */
.ikou-design-c > section:nth-of-type(3) .spnews-column-Main img,
.ikou-design-c > section:nth-of-type(4) .spnews-column-Main img {
    position: relative;
    z-index: 1;
    border-radius: 0;
    filter: saturate(.82) contrast(.98);
}

/* B案の個別写真指定より優先して、すべての写真を直角にする。 */
.ikou-design-c > section:nth-of-type(3) .spnews-column:nth-of-type(1) img,
.ikou-design-c > section:nth-of-type(3) .spnews-column:nth-of-type(2) img,
.ikou-design-c > section:nth-of-type(4) .spnews-column-inner > .spnews-column-Main:first-child img,
.ikou-design-c > section:nth-of-type(4) .spnews-column-inner > .spnews-column-Main:last-child img {
    border-radius: 0 !important;
}

.ikou-design-c > section:nth-of-type(3) .spnews-column:nth-of-type(1) .spnews-column-Main:last-child img {
    box-shadow: 26px 26px 0 var(--c-layer);
}

.ikou-design-c > section:nth-of-type(3) .spnews-column:nth-of-type(2) .spnews-column-Main:last-child img {
    box-shadow: -26px 26px 0 var(--c-layer-deep);
}

.ikou-design-c > section:nth-of-type(4) .spnews-column-inner > .spnews-column-Main:first-child img {
    box-shadow: -22px 22px 0 var(--c-layer-pale);
}

.ikou-design-c > section:nth-of-type(4) .spnews-column-inner > .spnews-column-Main:last-child img {
    box-shadow: 22px 22px 0 var(--c-layer-deep);
}

/* ギャラリーの余白を色面として残し、写真の高さの差を強調する。 */
.ikou-design-c > section:nth-of-type(4) .spnews-column-Main {
    position: relative;
}

.ikou-design-c > section:nth-of-type(4) .spnews-column-Main::before {
    content: "";
    position: absolute;
    z-index: 0;
    width: 42%;
    height: 38%;
    background: var(--c-layer);
}

.ikou-design-c > section:nth-of-type(4) .spnews-column-Main:first-child::before {
    top: -14px;
    left: -14px;
}

.ikou-design-c > section:nth-of-type(4) .spnews-column-Main:last-child::before {
    right: -14px;
    bottom: -14px;
    background: var(--c-layer-pale);
}

/* 「修行の様子」の写真背面にある小さな色面は表示しない。 */
.ikou-design-c > section:nth-of-type(4) .spnews-column-Main::before {
    display: none;
}

.ikou-design-c .ikou-gallery-photo {
    position: relative;
    width: 100%;
    height: 100%;
    margin: 0;
}

.ikou-design-c .ikou-gallery-photo figcaption {
    position: absolute;
    z-index: 2;
    right: 12px;
    bottom: 12px;
    max-width: calc(100% - 24px);
    padding: 7px 11px;
    border: 1px solid rgba(255, 255, 255, .35);
    background: rgba(12, 31, 40, .74);
    color: #fff;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.6;
    text-align: left;
    text-indent: 0;
    overflow-wrap: anywhere;
}

/* 地図も写真と同じ直線的な扱いにそろえる。 */
.ikou-design-c .ikou_map,
.ikou-design-c > section:nth-of-type(7) .spnews-column-Main:last-child .ikou_map {
    border-radius: 0;
    box-shadow: 16px 16px 0 var(--c-layer-pale);
}

.ikou-design-c > section:nth-of-type(7) .spnews-column-Main:last-child .ikou_map {
    box-shadow: -16px 16px 0 var(--c-layer);
}

@media (max-width: 767px) {
    /* 本文をコンパクトにしつつ、最低限の読みやすさを保つ。 */
    .ikou-design-c {
        font-size: 17px;
    }

    /* モバイルでは、写真を隠さないようキャプションを写真の下へ置く。 */
    .ikou-design-c .ikou-gallery-photo {
        height: auto;
    }

    .ikou-design-c .ikou-gallery-photo figcaption {
        position: static;
        max-width: none;
        margin-top: 14px;
        padding: 0;
        border: 0;
        background: transparent;
        color: var(--b-ink);
        font-size: 14px;
        line-height: 1.6;
    }

    .ikou-design-c > section:nth-of-type(3) {
        background: var(--b-sky);
    }

    .ikou-design-c > section:nth-of-type(3) > .spnewsContents > .title-m-fix:nth-of-type(2) {
        margin-bottom: 12px;
        padding-top: 64px;
        background: var(--b-sky);
    }

    .ikou-design-c > section:nth-of-type(3) .spnews-column:nth-of-type(2) {
        padding-top: 24px;
    }

    .ikou-design-c > section:nth-of-type(5) > .spnewsContents > .title-m-fix {
        margin-bottom: 0;
    }

    .ikou-design-c > section:nth-of-type(5) .spnews-column {
        padding-top: 8px;
    }

    .ikou-design-c .ikou_sched {
        table-layout: fixed;
    }

    .ikou-design-c .ikou_sched > .alignenter {
        margin-bottom: 8px;
        line-height: 1.4;
    }

    .ikou-design-c .ikou_sched th {
        padding-top: 10px;
        padding-bottom: 10px;
        font-size: clamp(11px, 3.3vw, 16px);
        letter-spacing: -0.03em;
        white-space: nowrap;
    }

    .ikou-design-c .ikou_sched_time {
        width: 31%;
        padding-right: 8px;
    }

    .ikou-design-c .ikou_sched_info {
        width: 69%;
        padding-left: 8px;
    }

    .ikou-design-c > section:nth-of-type(3) .spnews-column:nth-of-type(1) .spnews-column-Main:last-child img,
    .ikou-design-c > section:nth-of-type(4) .spnews-column-inner > .spnews-column-Main:first-child img {
        box-shadow: 12px 12px 0 var(--c-layer);
    }

    .ikou-design-c > section:nth-of-type(3) .spnews-column:nth-of-type(2) .spnews-column-Main:last-child img,
    .ikou-design-c > section:nth-of-type(4) .spnews-column-inner > .spnews-column-Main:last-child img {
        box-shadow: -12px 12px 0 var(--c-layer-deep);
    }

    .ikou-design-c .ikou_map,
    .ikou-design-c > section:nth-of-type(7) .spnews-column-Main:last-child .ikou_map {
        box-shadow: 10px 10px 0 var(--c-layer-pale);
    }

    /* 修行の様子: 左右の色面は、それぞれページ外側へ逃がす。 */
    .ikou-design-c > section:nth-of-type(4) .spnews-column-inner > .spnews-column-Main:first-child img {
        box-shadow: -12px 12px 0 var(--c-layer-pale);
    }

    .ikou-design-c > section:nth-of-type(4) .spnews-column-inner > .spnews-column-Main:last-child img {
        box-shadow: 12px 12px 0 var(--c-layer-deep);
    }
}