@charset "UTF-8";

/* main要素のレイアウト */

.sponsor-main {
    padding: 100px 20px;
    min-height: 70vh;

    display: flex;
    align-items: center;
    justify-content: center;

    background-color: #f9f9f9;
}

/* 中央の白いコンテナ枠 */

.sponsor-main .sponsor-container {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;

    padding: 60px 40px;

    background: #fff;
    border-radius: 12px;
    border: 1px solid #eee;

    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

/* 協賛企業の見出し */

.sponsor-main .main-title {
    font-size: 2.5rem;
    letter-spacing: 2px;

    color: #333 !important;
    text-decoration: none !important;

    margin: 0 0 50px;
    text-align: center;
}

/* 協賛企業一覧 */

.sponsor-main .sponsor-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
}

/* 「敬称略・50音順」 */

.sponsor-main .sponsor-note {
    margin: -35px 0 40px;
    text-align: center;
    color: #777;
    font-size: 0.85rem;
}

/* 各企業 */

.sponsor-main .sponsor-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;

    width: fit-content;
    max-width: 100%;
    margin: 0 auto;
}

/* URLがある企業 */

.sponsor-main .sponsor-item a {
    display: inline-block;
    color: #333 !important;
    text-decoration: none !important;
    font-size: 1rem;
    line-height: 1.6;
}

/* hover時だけ下線 */

.sponsor-main .sponsor-item a:hover {
    color: #333 !important;
    text-decoration: underline !important;
    text-underline-offset: 4px;
}

/* 外部リンクマーク */

.sponsor-main .external-link {
    margin-left: 5px;
    font-size: 0.85em;
}

/* URLがない企業 */

.sponsor-main .sponsor-name {
    color: #333 !important;
    font-size: 1rem;
    line-height: 1.6;
}

/* ホームへ戻る部分 */

.sponsor-main .back-home-wrap {
    padding-top: 30px;
    margin-top: 40px;

    border-top: 1px solid #eee;

    text-align: center;
}

/* ホームへ戻るリンク */

.sponsor-main .back-home-link {
    color: inherit;
    text-decoration: none;

    font-weight: bold;
    font-size: 0.95rem;
}

.sponsor-main .back-home-link:hover {
    text-decoration: underline;
    text-underline-offset: 4px;
}


/* スマートフォン */

@media (max-width: 600px) {

    .sponsor-main {
        padding: 70px 15px;
    }

    .sponsor-main .sponsor-container {
        padding: 45px 20px;
    }

    .sponsor-main .main-title {
        font-size: 2rem;
        margin-bottom: 40px;
    }

    .sponsor-main .sponsor-list {
        grid-template-columns: 1fr;
        gap: 18px;
    }
}