@charset "utf-8";
/**
 * single-charange-cup.php 専用スタイル
 * カスタム投稿タイプ「charange-cup」のシングルページでのみ読み込まれます。
 */

/* ==========================================================================
   全体コンテナ・基本設定（既存 #main の display:flex をリセット）
   ========================================================================== */
#main.charange-cup-page,
body.single-charange-cup #main {
    display: block !important;
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0;
    background-color: #ffffff;
    color: #333333;
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.7;
    letter-spacing: 0.05em;
    box-sizing: border-box;
}

.charange-cup-page .challenge-container {
    width: 100%;
    max-width: 1160px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
    box-sizing: border-box;
}

/* ==========================================================================
   ヒーローセクション（大会タイトル・結果発表）
   ========================================================================== */
.charange-cup-page .challenge-hero {
    background: linear-gradient(180deg, #f2f8fc 0%, #e2eff7 100%);
    padding: 60px 0 55px;
    text-align: center;
    border-bottom: 2px solid #d4e5f0;
    position: relative;
}

.charange-cup-page .challenge-hero-inner {
    max-width: 860px;
    margin-left: auto;
    margin-right: auto;
}

/* 記事タイトル（サイトデザインに合わせたライン装飾付きピルバッジ） */
.charange-cup-page .challenge-post-title-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    max-width: 720px;
}

/* サイト共通の head-border と同調する左右アクセントライン */
.charange-cup-page .challenge-post-title-wrap::before,
.charange-cup-page .challenge-post-title-wrap::after {
    content: "";
    height: 2px;
    flex-grow: 1;
    max-width: 50px;
    background-color: #fea65e;
}

.charange-cup-page .challenge-post-title-wrap::before {
    margin-right: 14px;
}

.charange-cup-page .challenge-post-title-wrap::after {
    margin-left: 14px;
}

.charange-cup-page .challenge-post-title {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: #ffffff;
    color: #0064af;
    font-size: 14px;
    font-weight: 700;
    line-height: 1.5;
    padding: 5px 20px;
    border-radius: 9999px;
    border: 1px solid #bce1f5;
    box-shadow: 0 2px 8px rgba(0, 100, 175, 0.08);
    letter-spacing: 0.06em;
    margin: 0;
    word-break: break-word;
}

/* 大会名 */
.charange-cup-page .challenge-title {
    color: #0e3a61;
    font-size: 34px;
    font-weight: 700;
    line-height: 1.45;
    margin: 0 0 16px;
    letter-spacing: 0.08em;
    text-shadow: 0 1px 1px rgba(255, 255, 255, 0.9);
}

/* 結果発表バッジ（サイト共通のピンク系カラー） */
.charange-cup-page .challenge-result-badge {
    display: inline-block;
    background: linear-gradient(135deg, #fc7a74 0%, #fc6c66 100%);
    color: #ffffff;
    font-size: 15px;
    font-weight: 700;
    padding: 5px 24px;
    border-radius: 30px;
    letter-spacing: 0.12em;
    margin: 0 0 24px;
    box-shadow: 0 3px 10px rgba(252, 108, 102, 0.32);
}

/* リード文 */
.charange-cup-page .challenge-lead {
    color: #4b5863;
    font-size: 15px;
    line-height: 1.85;
    margin: 0 auto;
    max-width: 720px;
    background: rgba(255, 255, 255, 0.75);
    padding: 20px 28px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(18, 72, 115, 0.04);
}

.charange-cup-page .challenge-lead p {
    margin: 0 0 8px;
    font-size: 15px;
}

.charange-cup-page .challenge-lead p:last-child {
    margin-bottom: 0;
}

/* ==========================================================================
   メインコンテンツセクション（参加者のチャレンジ一覧）
   ========================================================================== */
.charange-cup-page .challenge-section {
    padding: 60px 0 80px;
}

/* ==========================================================================
   大会バナーコンポーネント（front-page / single 共通対応）
   ========================================================================== */
.challenge-banner-wrapper {
    margin-bottom: 50px;
}

.challenge-event-banner {
    display: block;
    position: relative;
    overflow: hidden;
    border-radius: 16px;
    background-color: #0064af;
    text-decoration: none;
    box-shadow: 0 10px 30px rgba(0, 100, 175, 0.18);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    min-height: 220px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.challenge-event-banner:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 36px rgba(0, 100, 175, 0.26);
}

/* 右側に配置される背景画像（banners_img）
   ※ mask-image により左端の境界線を完全に消滅させ、青色へふんわり溶け込ませる */
.challenge-event-banner .banner-bg-img {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center right;
    background-repeat: no-repeat;
    transition: transform 0.5s ease;
    -webkit-mask-image: linear-gradient(
        to right,
        transparent 0%,
        transparent 22%,
        rgba(0, 0, 0, 0.15) 36%,
        rgba(0, 0, 0, 0.65) 52%,
        rgba(0, 0, 0, 0.95) 68%,
        #000000 78%,
        #000000 100%
    );
    mask-image: linear-gradient(
        to right,
        transparent 0%,
        transparent 22%,
        rgba(0, 0, 0, 0.15) 36%,
        rgba(0, 0, 0, 0.65) 52%,
        rgba(0, 0, 0, 0.95) 68%,
        #000000 78%,
        #000000 100%
    );
}

.challenge-event-banner .banner-bg-default {
    background: linear-gradient(135deg, #0064af 0%, #01a8f3 100%);
}

.challenge-event-banner:hover .banner-bg-img {
    transform: scale(1.04);
}

/* 左側の青色オーバーレイ（文字の可読性を保ちつつ右へ自然に抜ける） */
.challenge-event-banner .banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to right,
        #0064af 0%,
        #0064af 25%,
        rgba(0, 100, 175, 0.75) 40%,
        rgba(0, 100, 175, 0.2) 58%,
        transparent 72%,
        transparent 100%
    );
    z-index: 1;
}

/* テキストコンテンツエリア */
.challenge-event-banner .banner-content {
    position: relative;
    z-index: 2;
    padding: 36px 45px;
    max-width: 58%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 220px;
    text-align: left;
}

/* メタ情報（日付・記事タイトル） */
.challenge-event-banner .banner-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

/* 日付バッジ */
.challenge-event-banner .banner-date {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #fea65e;
    color: #ffffff;
    font-size: 13px;
    font-weight: 700;
    padding: 3px 12px;
    border-radius: 20px;
    letter-spacing: 0.05em;
    box-shadow: 0 2px 6px rgba(254, 166, 94, 0.35);
}

/* 記事タイトル（小さめ・サブ見出し） */
.challenge-event-banner .banner-post-title {
    color: #e0f0fa;
    font-size: 14.5px;
    font-weight: 600;
    letter-spacing: 0.06em;
    line-height: 1.4;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* 大会名（メインの大きな見出し） */
.challenge-event-banner .banner-cup-name {
    color: #ffffff;
    font-size: 26px;
    font-weight: 700;
    line-height: 1.35;
    margin: 0 0 16px;
    letter-spacing: 0.06em;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* ボタン風パーツ */
.challenge-event-banner .banner-btn {
    display: inline-flex;
    align-items: center;
}

.challenge-event-banner .banner-btn span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.5);
    color: #ffffff;
    font-size: 13.5px;
    font-weight: 700;
    padding: 6px 18px;
    border-radius: 30px;
    letter-spacing: 0.06em;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
}

.challenge-event-banner:hover .banner-btn span {
    background: #ffffff;
    color: #0064af;
    border-color: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.challenge-event-banner .banner-btn span i {
    font-size: 15px;
    transition: transform 0.3s ease;
}

.challenge-event-banner:hover .banner-btn span i {
    transform: translateX(4px);
}

/* セクション見出し「みんなのチャレンジ」 */
.charange-cup-page .challenge-section-title {
    text-align: center;
    color: #0e3a61;
    font-size: 26px;
    font-weight: 700;
    line-height: 1.4;
    margin: 0 auto 44px;
    letter-spacing: 0.08em;
    position: relative;
    padding-bottom: 16px;
}

/* 英語サブタイトル */
.charange-cup-page .challenge-section-title::before {
    content: "CHALLENGES";
    display: block;
    font-size: 13px;
    font-weight: 700;
    color: #01a8f3;
    letter-spacing: 0.16em;
    margin-bottom: 6px;
    font-family: 'Noto Sans JP', sans-serif;
}

/* 下部グラデーションアンダーバー（サイト共通ブルー） */
.charange-cup-page .challenge-section-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 48px;
    height: 3px;
    background: linear-gradient(90deg, #0064af 0%, #01a8f3 100%);
    border-radius: 3px;
}

/* 参加者カードグリッド（PC: 3列） */
.charange-cup-page .challenge-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 36px 28px;
}

/* 参加者カード */
.charange-cup-page .challenge-card {
    display: flex;
    flex-direction: column;
    background: #ffffff;
    border-radius: 14px;
    border: 1px solid #e5edf3;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(14, 58, 97, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.charange-cup-page .challenge-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 28px rgba(14, 58, 97, 0.12);
    border-color: #b9d7ea;
}

/* 写真エリア */
.charange-cup-page .challenge-card-image {
    width: 100%;
    aspect-ratio: 4 / 3;
    background-color: #e7eff4;
    border-radius: 0;
    overflow: hidden;
    position: relative;
}

.charange-cup-page .challenge-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 0;
    transition: transform 0.4s ease;
}

.charange-cup-page .challenge-card:hover .challenge-card-image img {
    transform: scale(1.05);
}

/* 写真未設定時のプレースホルダー */
.charange-cup-page .challenge-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #8c9da9;
    text-align: center;
    padding: 16px;
    box-sizing: border-box;
    user-select: none;
    background: linear-gradient(135deg, #f0f5f8 0%, #e5edf2 100%);
}

.charange-cup-page .placeholder-label {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 4px;
    display: block;
    color: #7b8f9e;
}

.charange-cup-page .placeholder-sub {
    font-size: 12px;
    display: block;
    color: #9ab0bf;
    letter-spacing: 0.03em;
}

/* カード本文エリア */
.charange-cup-page .challenge-card-content {
    padding: 18px 20px 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

/* 種目表示 */
.charange-cup-page .challenge-syumoku {
    display: flex;
    align-items: baseline;
    gap: 6px;
    padding: 6px 10px;
    background: #f0f7fb;
    border-radius: 6px;
    margin: 0 0 6px;
    border-left: 3px solid #0064af;
}

.charange-cup-page .syumoku-label {
    font-size: 12px;
    font-weight: 700;
    color: #0064af;
    white-space: nowrap;
}

.charange-cup-page .syumoku-value {
    font-size: 13.5px;
    font-weight: 700;
    color: #1a3c5a;
    letter-spacing: 0.02em;
}

/* コメント表示（優しいふきだし風） */
.charange-cup-page .challenge-comment {
    margin-top: 10px;
    padding: 12px 14px;
    background: #fafbfc;
    border-radius: 8px;
    border: 1px dashed #dbe6ee;
    position: relative;
    flex: 1;
}

.charange-cup-page .challenge-comment p {
    margin: 0;
    color: #333333;
    font-size: 13.5px;
    line-height: 1.7;
    word-break: break-word;
}

/* 掲載情報がない場合の案内文 */
.charange-cup-page .challenge-empty {
    text-align: center;
    padding: 60px 20px;
    color: #777777;
    font-size: 15px;
    background: #fbfcfd;
    border-radius: 8px;
}

/* ==========================================================================
   過去のインクルーシブスイミング（記事一覧）
   ========================================================================== */
.charange-cup-page .challenge-past-section {
    margin-top: 70px;
    padding-top: 50px;
    border-top: 2px dashed #dbe8f1;
}

/* 見出し */
.charange-cup-page .challenge-past-title {
    text-align: center;
    color: #0e3a61;
    font-size: 24px;
    font-weight: 700;
    line-height: 1.4;
    margin: 0 auto 36px;
    letter-spacing: 0.08em;
    position: relative;
    padding-bottom: 14px;
}

.charange-cup-page .challenge-past-title::before {
    content: "PAST CHALLENGES";
    display: block;
    font-size: 12.5px;
    font-weight: 700;
    color: #01a8f3;
    letter-spacing: 0.16em;
    margin-bottom: 5px;
    font-family: 'Noto Sans JP', sans-serif;
}

.charange-cup-page .challenge-past-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 42px;
    height: 3px;
    background: linear-gradient(90deg, #0064af 0%, #01a8f3 100%);
    border-radius: 3px;
}

/* 記事リンクリスト */
.charange-cup-page .challenge-past-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-width: 900px;
    margin: 0 auto;
    padding: 0;
    list-style: none;
}

.charange-cup-page .challenge-past-item {
    margin: 0;
    padding: 0;
    list-style: none;
}

.charange-cup-page .challenge-past-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    background: #ffffff;
    border: 1px solid #dce8f0;
    border-radius: 12px;
    padding: 16px 24px;
    box-shadow: 0 2px 8px rgba(18, 72, 115, 0.04);
    text-decoration: none;
    transition: all 0.25s ease;
    box-sizing: border-box;
}

.charange-cup-page .challenge-past-link:hover {
    border-color: #01a8f3;
    background: #fbfdff;
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0, 100, 175, 0.1);
}

.charange-cup-page .past-item-main {
    display: flex;
    align-items: center;
    gap: 18px;
    min-width: 0;
    flex: 1;
}

/* アイコンバッジ */
.charange-cup-page .past-icon-badge {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, #eef7fc 0%, #d8ecf8 100%);
    color: #0064af;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    border: 1px solid #bce1f5;
    transition: all 0.25s ease;
}

.charange-cup-page .challenge-past-link:hover .past-icon-badge {
    background: linear-gradient(135deg, #0064af 0%, #01a8f3 100%);
    color: #ffffff;
    border-color: #0064af;
}

.charange-cup-page .past-info {
    min-width: 0;
    flex: 1;
    text-align: left;
}

.charange-cup-page .past-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 4px;
    flex-wrap: wrap;
}

/* 大会名バッジ */
.charange-cup-page .past-cup-name {
    display: inline-block;
    background: #eef6fa;
    color: #124873;
    font-size: 12px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 4px;
    border: 1px solid #cce2ef;
    letter-spacing: 0.04em;
    line-height: 1.4;
}

/* 投稿日付 */
.charange-cup-page .past-date {
    color: #7b8e9b;
    font-size: 12.5px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    letter-spacing: 0.02em;
}

.charange-cup-page .past-date i {
    color: #9cb1bf;
}

/* 記事タイトル */
.charange-cup-page .past-item-title {
    color: #1a2a36;
    font-size: 16px;
    font-weight: 700;
    line-height: 1.5;
    margin: 0;
    letter-spacing: 0.04em;
    transition: color 0.2s ease;
    word-break: break-word;
}

.charange-cup-page .challenge-past-link:hover .past-item-title {
    color: #0064af;
}

/* 右矢印アイコン */
.charange-cup-page .past-arrow {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #f4f8fb;
    color: #0064af;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all 0.25s ease;
}

.charange-cup-page .challenge-past-link:hover .past-arrow {
    background: #0064af;
    color: #ffffff;
    transform: translateX(4px);
}

/* 過去記事がない場合の案内 */
.charange-cup-page .challenge-past-empty {
    text-align: center;
    padding: 36px 20px;
    background: #fbfcfd;
    border-radius: 10px;
    border: 1px dashed #d5e4ee;
    color: #6e8494;
    font-size: 14px;
    max-width: 800px;
    margin: 0 auto;
}

.charange-cup-page .challenge-past-empty p {
    margin: 0;
}

/* ==========================================================================
   フッター上部注記
   ========================================================================== */
.charange-cup-page .challenge-footer-notes {
    margin-top: 60px;
    padding-top: 24px;
    border-top: 1px solid #e5edf2;
    color: #666666;
    font-size: 13px;
    line-height: 1.8;
}

.charange-cup-page .challenge-organizer {
    margin: 0;
    font-size: 13px;
    color: #555555;
}

/* ==========================================================================
   レスポンシブ対応（タブレット・スマートフォン）
   ========================================================================== */
@media screen and (max-width: 960px) {
    .charange-cup-page .challenge-hero {
        padding: 45px 0 40px;
    }

    .charange-cup-page .challenge-post-title-wrap {
        margin-bottom: 12px;
    }

    .charange-cup-page .challenge-post-title-wrap::before,
    .charange-cup-page .challenge-post-title-wrap::after {
        max-width: 36px;
    }

    .charange-cup-page .challenge-post-title {
        font-size: 13px;
        padding: 4px 16px;
    }

    .charange-cup-page .challenge-title {
        font-size: 26px;
        margin-bottom: 14px;
    }

    .charange-cup-page .challenge-result-badge {
        font-size: 14px;
        padding: 4px 20px;
        margin-bottom: 18px;
    }

    .charange-cup-page .challenge-lead {
        padding: 16px 20px;
    }

    .charange-cup-page .challenge-section {
        padding: 45px 0 60px;
    }

    .challenge-banner-wrapper {
        margin-bottom: 40px;
    }

    .challenge-event-banner .banner-content {
        padding: 28px 32px;
        max-width: 65%;
        min-height: 200px;
    }

    .challenge-event-banner .banner-cup-name {
        font-size: 22px;
        margin-bottom: 14px;
    }

    .challenge-event-banner .banner-bg-img {
        -webkit-mask-image: linear-gradient(
            to right,
            transparent 0%,
            transparent 18%,
            rgba(0, 0, 0, 0.2) 32%,
            rgba(0, 0, 0, 0.7) 48%,
            #000000 68%
        );
        mask-image: linear-gradient(
            to right,
            transparent 0%,
            transparent 18%,
            rgba(0, 0, 0, 0.2) 32%,
            rgba(0, 0, 0, 0.7) 48%,
            #000000 68%
        );
    }

    .challenge-event-banner .banner-overlay {
        background: linear-gradient(
            to right,
            #0064af 0%,
            #0064af 25%,
            rgba(0, 100, 175, 0.75) 42%,
            rgba(0, 100, 175, 0.15) 62%,
            transparent 76%
        );
    }

    .charange-cup-page .challenge-section-title {
        font-size: 24px;
        margin-bottom: 34px;
        padding-bottom: 14px;
    }

    .charange-cup-page .challenge-section-title::before {
        font-size: 12.5px;
    }

    .charange-cup-page .challenge-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px 20px;
    }

    .charange-cup-page .challenge-past-section {
        margin-top: 50px;
        padding-top: 40px;
    }

    .charange-cup-page .challenge-past-title {
        font-size: 22px;
        margin-bottom: 28px;
    }
}

@media screen and (max-width: 600px) {
    .charange-cup-page .challenge-container {
        padding-left: 16px;
        padding-right: 16px;
    }

    .charange-cup-page .challenge-hero {
        padding: 35px 0 30px;
    }

    .charange-cup-page .challenge-post-title-wrap {
        margin-bottom: 10px;
        padding: 0 8px;
    }

    .charange-cup-page .challenge-post-title-wrap::before,
    .charange-cup-page .challenge-post-title-wrap::after {
        max-width: 24px;
        min-width: 14px;
    }

    .charange-cup-page .challenge-post-title-wrap::before {
        margin-right: 10px;
    }

    .charange-cup-page .challenge-post-title-wrap::after {
        margin-left: 10px;
    }

    .charange-cup-page .challenge-post-title {
        font-size: 13px;
        padding: 4px 14px;
    }

    .charange-cup-page .challenge-title {
        font-size: 22px;
        line-height: 1.4;
        margin-bottom: 12px;
    }

    .charange-cup-page .challenge-result-badge {
        font-size: 13px;
        padding: 4px 18px;
        margin-bottom: 16px;
    }

    .charange-cup-page .challenge-lead {
        font-size: 13.5px;
        padding: 14px 16px;
        border-radius: 8px;
    }

    .charange-cup-page .challenge-lead p {
        font-size: 13.5px;
    }

    .charange-cup-page .challenge-section {
        padding: 35px 0 50px;
    }

    .charange-cup-page .challenge-section-title {
        font-size: 20px;
        margin-bottom: 28px;
        padding-bottom: 12px;
    }

    .charange-cup-page .challenge-section-title::before {
        font-size: 12px;
        margin-bottom: 4px;
    }

    .charange-cup-page .challenge-section-title::after {
        width: 40px;
        height: 2.5px;
    }

    .charange-cup-page .challenge-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .charange-cup-page .challenge-card-image {
        border-radius: 10px;
    }

    .charange-cup-page .challenge-card-image img {
        border-radius: 10px;
    }

    .charange-cup-page .challenge-footer-notes {
        margin-top: 40px;
        padding-top: 18px;
        font-size: 12px;
    }

    .charange-cup-page .challenge-organizer {
        font-size: 12px;
    }

    .charange-cup-page .challenge-past-section {
        margin-top: 40px;
        padding-top: 32px;
    }

    /* スマートフォン時のバナー調整（上部画像＋下部テキストの最適化レイアウト） */
    .challenge-banner-wrapper {
        margin-bottom: 35px;
    }

    .challenge-event-banner {
        display: flex;
        flex-direction: column;
        min-height: auto;
        border-radius: 14px;
        background-color: #0064af;
    }

    /* 画像を上部に配置し、下端を自然にフェードアウト */
    .challenge-event-banner .banner-bg-img {
        position: relative;
        top: auto;
        right: auto;
        width: 100%;
        height: 190px;
        background-size: cover;
        background-position: center;
        opacity: 1;
        flex-shrink: 0;
        -webkit-mask-image: linear-gradient(
            to bottom,
            #000000 0%,
            #000000 60%,
            rgba(0, 0, 0, 0.4) 82%,
            transparent 100%
        );
        mask-image: linear-gradient(
            to bottom,
            #000000 0%,
            #000000 60%,
            rgba(0, 0, 0, 0.4) 82%,
            transparent 100%
        );
    }

    /* 画像から青色テキストエリアへの滑らかなフェードオーバーレイ */
    .challenge-event-banner .banner-overlay {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 190px;
        background: linear-gradient(
            to bottom,
            rgba(0, 100, 175, 0) 0%,
            rgba(0, 100, 175, 0) 50%,
            rgba(0, 100, 175, 0.6) 75%,
            #0064af 100%
        );
    }

    /* テキストは画像の下に全幅でゆったり表示 */
    .challenge-event-banner .banner-content {
        position: relative;
        z-index: 2;
        max-width: 100%;
        width: 100%;
        padding: 20px 18px 24px;
        min-height: auto;
        background-color: #0064af;
        margin-top: -8px;
    }

    .challenge-event-banner .banner-meta {
        gap: 8px;
        margin-bottom: 8px;
    }

    .challenge-event-banner .banner-cup-name {
        font-size: 20px;
        line-height: 1.4;
        margin-bottom: 14px;
    }

    .challenge-event-banner .banner-post-title {
        font-size: 13.5px;
        line-height: 1.4;
    }

    .challenge-event-banner .banner-date {
        font-size: 12px;
        padding: 2px 10px;
    }

    .challenge-event-banner .banner-btn span {
        font-size: 13px;
        padding: 7px 16px;
        width: 100%;
        justify-content: center;
    }

    .charange-cup-page .challenge-past-title {
        font-size: 19px;
        margin-bottom: 22px;
        padding-bottom: 11px;
    }

    .charange-cup-page .challenge-past-title::before {
        font-size: 11.5px;
    }

    .charange-cup-page .challenge-past-link {
        padding: 13px 14px;
        gap: 12px;
    }

    .charange-cup-page .past-item-main {
        gap: 12px;
    }

    .charange-cup-page .past-icon-badge {
        width: 36px;
        height: 36px;
        font-size: 15px;
    }

    .charange-cup-page .past-item-title {
        font-size: 14px;
    }

    .charange-cup-page .past-arrow {
        width: 28px;
        height: 28px;
        font-size: 15px;
    }
}