/* /books 用の最小追記。既存style.cssを読み込んだ後に追加してください。 */

/* 視覚的に隠すがスクリーンリーダーには読ませる */
.visually-hidden {
    position: absolute !important;
    inline-size: 1px;
    block-size: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

.books h1 {
    font-size: var(--font__xl);
    width: max-content;
    background: #292929;
    color: #fff;
    font-weight: 400;
    padding: 0 1em;
    position: relative;
    top: -24px;
    border-radius: 2px;
}

.books .page_line {
    margin-top: 80px;
    border-top: 1px solid #292929;
    border-left: 1px solid #292929;
    border-right: 1px solid #292929;
}


.books h2::before,
.books h2::after {
    content: none;
}

.btn a::before {
    content: none;
}

.btn a::after {
    left: 4.5em;

}

.books-header {
    padding: 0 2px;
}

.books-header .lead {
    max-width: 60ch;
    margin: .75rem auto 1rem;
}

/* 目次チップ（残す場合） */
.books-header .toc ul {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem .75rem;
    justify-content: center;
    margin-top: .75rem;
}

.books-header .toc a {
    display: inline-block;
    padding: .25rem .75rem;
    border: 1px solid #e5e7eb;
    border-radius: 999px;
    font-size: var(--font__s);
    background: #fff;
}

.book-detail {
    scroll-margin-top: 96px;
    padding-block: clamp(24px, 4vw, 48px);
}

.detail-grid {
    display: grid;
    grid-template-columns: minmax(240px, 360px) 1fr;
    gap: clamp(16px, 3vw, 32px);
    align-items: start;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: clamp(16px, 3vw, 28px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, .04);
}

.books .book_inner {
    max-width: 60%;
}

.book-detail .cover {
    aspect-ratio: 3/4;
    border-radius: 12px;
    overflow: hidden;
    background: #f3f4f6;
}

.book-detail .cover img {
    inline-size: 100%;
    block-size: 100%;
    object-fit: cover;
}

.book-detail .body h2 {
    justify-content: flex-start;
    /* 既存h2の左右ラインは活かしつつ左寄せ */
}

.book-detail .body .blurb {
    margin: .5rem 0 1rem;
    line-height: 1.8;
}

.book-detail .meta {
    display: grid;
    grid-template-columns: max(6em, 24%) 1fr;
    gap: .35rem .65rem;
    margin: 0 0 1rem;
    font-size: var(--font__s);
}

.book-detail .meta dt {
    color: #6b7280;
}

.book-detail .meta dd {
    color: #111827;
}

.book-detail .sub-links {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem .75rem;
    font-size: var(--font__s);
}

.book-detail .sub-links a {
    text-decoration: underline;
}

/* 準備中 */
.book-detail.is-coming .section_inner {
    text-align: center;
}

/* レスポンシブ */
@media (max-width: 960px) {
    .detail-grid {
        grid-template-columns: 1fr;
    }

    .book-detail .cover {
        max-width: 360px;
        margin-inline: auto;
    }

    .books-header .lead {
        margin-bottom: .5rem;
    }
}