.manual-block {
    --manual-accent: var(--primary, #2563eb);
    --manual-surface: var(--card, #fff);
    --manual-border: var(--border, #e5e7eb);
    --manual-text: var(--foreground, #111827);
    --manual-muted: var(--muted-foreground, #6b7280);
    color: var(--manual-text);
}

.manual-block a { color: inherit; text-decoration: none; }
.manual-block__body { min-width: 0; }
.manual-block__empty {
    min-height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 24px;
    border: 1px dashed var(--manual-border);
    border-radius: 14px;
    color: var(--manual-muted);
    text-align: center;
}
.manual-block__empty i { font-size: 1.7rem; color: var(--manual-accent); opacity: .65; }

.manual-books { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.manual-block--list .manual-books { grid-template-columns: 1fr; }
.manual-book-card {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
    padding: 18px;
    border: 1px solid var(--manual-border);
    border-radius: 14px;
    background: var(--manual-surface);
    transition: border-color .18s, transform .18s, box-shadow .18s;
}
.manual-book-card:hover { border-color: var(--manual-accent); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(15, 23, 42, .07); }
.manual-book-card__icon { display: grid; place-items: center; width: 42px; height: 42px; flex: 0 0 42px; border-radius: 12px; background: color-mix(in srgb, var(--manual-accent) 10%, transparent); color: var(--manual-accent); font-size: 1.2rem; }
.manual-book-card__content { display: flex; flex: 1; min-width: 0; flex-direction: column; gap: 5px; }
.manual-book-card__title { font-size: 1rem; line-height: 1.35; }
.manual-book-card__description { color: var(--manual-muted); font-size: .86rem; line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.manual-book-card__arrow { color: var(--manual-accent); }

.manual-toc-head { display: flex; justify-content: space-between; gap: 18px; padding: 18px 20px; border: 1px solid var(--manual-border); border-radius: 14px 14px 0 0; background: color-mix(in srgb, var(--manual-accent) 5%, var(--manual-surface)); }
.manual-toc-head strong { font-size: 1rem; }
.manual-toc-head p { margin: 6px 0 0; color: var(--manual-muted); font-size: .84rem; line-height: 1.5; }
.manual-toc-head > a { color: var(--manual-accent); }
.manual-toc-list { border: 1px solid var(--manual-border); border-top: 0; border-radius: 0 0 14px 14px; overflow: hidden; }
.manual-toc-link { display: flex; align-items: center; gap: 10px; padding: 11px 16px 11px calc(16px + var(--manual-depth) * 18px); border-top: 1px solid color-mix(in srgb, var(--manual-border) 72%, transparent); font-size: .9rem; }
.manual-toc-link:first-child { border-top: 0; }
.manual-toc-link:hover { color: var(--manual-accent); background: color-mix(in srgb, var(--manual-accent) 5%, transparent); }
.manual-toc-link__dot { width: 6px; height: 6px; flex: 0 0 6px; border-radius: 50%; background: var(--manual-border); }
.manual-toc-link:hover .manual-toc-link__dot { background: var(--manual-accent); }

.manual-page-card { padding: 24px; border: 1px solid var(--manual-border); border-radius: 16px; background: var(--manual-surface); }
.manual-block--page-card .manual-page-card { border-left: 4px solid var(--manual-accent); }
.manual-page-card__book { display: inline-flex; align-items: center; gap: 6px; margin-bottom: 8px; color: var(--manual-accent) !important; font-size: .8rem; font-weight: 700; }
.manual-page-card__title { margin: 0 0 16px; font-size: 1.2rem; line-height: 1.35; }
.manual-page-card__excerpt { margin: 0; color: var(--manual-muted); font-size: .93rem; line-height: 1.7; }
.manual-block--page .manual-page-content {
    color: var(--manual-text);
    font-size: .96rem;
    line-height: 1.75;
    overflow-wrap: anywhere;
}
.manual-block--page .manual-page-content > :first-child { margin-top: 0; }
.manual-block--page .manual-page-content > :last-child { margin-bottom: 0; }
.manual-block--page .manual-page-content h1,
.manual-block--page .manual-page-content h2,
.manual-block--page .manual-page-content h3,
.manual-block--page .manual-page-content h4,
.manual-block--page .manual-page-content h5,
.manual-block--page .manual-page-content h6 {
    margin: 1.65em 0 .65em;
    color: var(--manual-text);
    font-weight: 750;
    letter-spacing: -.02em;
    line-height: 1.35;
}
.manual-block--page .manual-page-content h1 { font-size: 1.7rem; }
.manual-block--page .manual-page-content h2 { font-size: 1.45rem; }
.manual-block--page .manual-page-content h3 { font-size: 1.25rem; }
.manual-block--page .manual-page-content h4 { font-size: 1.1rem; }
.manual-block--page .manual-page-content h5 { font-size: 1rem; }
.manual-block--page .manual-page-content h6 { color: var(--manual-muted); font-size: .92rem; }
.manual-block--page .manual-page-content p { margin: 0 0 1em; }
.manual-block--page .manual-page-content ul,
.manual-block--page .manual-page-content ol {
    margin: 0 0 1.1em;
    padding-left: 1.55em;
}
.manual-block--page .manual-page-content ul { list-style: disc; }
.manual-block--page .manual-page-content ol { list-style: decimal; }
.manual-block--page .manual-page-content ul ul { list-style: circle; }
.manual-block--page .manual-page-content ol ol { list-style: lower-alpha; }
.manual-block--page .manual-page-content li { margin: .3em 0; padding-left: .15em; }
.manual-block--page .manual-page-content li > ul,
.manual-block--page .manual-page-content li > ol { margin: .35em 0; }
.manual-block--page .manual-page-content dl {
    margin: 0 0 1.1em;
    padding: 1em 1.1em;
    border-left: 3px solid var(--manual-accent);
    border-radius: 0 10px 10px 0;
    background: color-mix(in srgb, var(--manual-accent) 5%, transparent);
}
.manual-block--page .manual-page-content dt { margin-top: .75em; font-weight: 750; }
.manual-block--page .manual-page-content dt:first-child { margin-top: 0; }
.manual-block--page .manual-page-content dd { margin: .2em 0 0; color: var(--manual-muted); }
.manual-block--page .manual-page-content a {
    color: var(--manual-accent);
    text-decoration: underline;
    text-decoration-thickness: .08em;
    text-underline-offset: .16em;
}
.manual-block--page .manual-page-content strong { font-weight: 750; }
.manual-block--page .manual-page-content blockquote {
    margin: 1.2em 0;
    padding: .85em 1em;
    border-left: 4px solid var(--manual-accent);
    background: color-mix(in srgb, var(--manual-accent) 6%, transparent);
    color: var(--manual-muted);
}
.manual-block--page .manual-page-content blockquote > :last-child { margin-bottom: 0; }
.manual-block--page .manual-page-content hr {
    margin: 1.6em 0;
    border: 0;
    border-top: 1px solid var(--manual-border);
}
.manual-block--page .manual-page-content code {
    padding: .12em .35em;
    border-radius: 5px;
    background: color-mix(in srgb, var(--manual-text) 7%, transparent);
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: .88em;
}
.manual-block--page .manual-page-content pre {
    max-width: 100%;
    margin: 1.1em 0;
    padding: 1em 1.1em;
    overflow: auto;
    border: 1px solid var(--manual-border);
    border-radius: 10px;
    background: color-mix(in srgb, var(--manual-text) 5%, var(--manual-surface));
    line-height: 1.6;
}
.manual-block--page .manual-page-content pre code { padding: 0; background: transparent; font-size: .86rem; }
.manual-block--page .manual-page-content table {
    display: block;
    width: 100%;
    max-width: 100%;
    margin: 1.2em 0;
    overflow-x: auto;
    border-collapse: collapse;
    font-size: .9rem;
    white-space: normal;
}
.manual-block--page .manual-page-content th,
.manual-block--page .manual-page-content td {
    min-width: 7em;
    padding: .65em .8em;
    border: 1px solid var(--manual-border);
    text-align: left;
    vertical-align: top;
}
.manual-block--page .manual-page-content th {
    background: color-mix(in srgb, var(--manual-accent) 7%, var(--manual-surface));
    font-weight: 750;
}
.manual-block--page .manual-page-content tbody tr:nth-child(even) td {
    background: color-mix(in srgb, var(--manual-text) 2.5%, transparent);
}
.manual-block--page .manual-page-content img { max-width: 100%; height: auto; }
.manual-block__more { display: inline-flex; align-items: center; gap: 7px; margin-top: 18px; color: var(--manual-accent) !important; font-size: .88rem; font-weight: 700; }

.manual-recent-list { display: flex; flex-direction: column; border: 1px solid var(--manual-border); border-radius: 14px; overflow: hidden; }
.manual-block--recent-cards .manual-recent-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; border: 0; border-radius: 0; overflow: visible; }
.manual-recent-item { display: flex; align-items: center; gap: 14px; min-width: 0; padding: 15px 18px; border-top: 1px solid var(--manual-border); background: var(--manual-surface); }
.manual-recent-item:first-child { border-top: 0; }
.manual-block--recent-cards .manual-recent-item { border: 1px solid var(--manual-border); border-radius: 14px; }
.manual-recent-item:hover { background: color-mix(in srgb, var(--manual-accent) 4%, var(--manual-surface)); }
.manual-recent-item__content { display: flex; flex: 1; min-width: 0; flex-direction: column; gap: 3px; }
.manual-recent-item__book { color: var(--manual-accent); font-size: .74rem; font-weight: 700; }
.manual-recent-item__title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .93rem; }
.manual-recent-item__excerpt { color: var(--manual-muted); font-size: .8rem; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.manual-recent-item__date { flex: 0 0 auto; color: var(--manual-muted); font-size: .76rem; }
.manual-recent-item__arrow { color: var(--manual-muted); font-size: .75rem; }

@media (min-width: 576px) {
    .manual-block-item--pc-hidden { display: none !important; }
}
@media (max-width: 575px) {
    .manual-books, .manual-block--recent-cards .manual-recent-list { grid-template-columns: 1fr; }
    .manual-block-item--mo-hidden { display: none !important; }
    .manual-book-card, .manual-recent-item { padding: 14px; }
    .manual-page-card { padding: 18px; }
    .manual-recent-item__date { display: none; }
}