.knowledge-detail {
    --detail-navy: #14263a;
    --detail-orange: #c24d0a;
    --detail-paper: #fff;
    --detail-ink: #33414f;
    --detail-muted: #5c6a78;
    --detail-line: rgba(20, 38, 58, .14);
    background: #EAEAF3;
    color: var(--detail-ink);
    padding: 0 0 80px;
}

.knowledge-detail-wrap {
    max-width: 1160px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}

.knowledge-detail-layout {
    display: grid;
    grid-template-columns: minmax(0, 780px) minmax(230px, 300px);
    gap: 52px;
    align-items: start;
    margin-top: 26px;
}

.knowledge-detail-main {
    min-width: 0;
}

.knowledge-detail-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.knowledge-detail-chip {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 14px;
    line-height: 1.4;
}

.knowledge-detail-chip.category {
    background: rgba(194, 77, 10, .10);
    color: #a84208;
    font-weight: 700;
}

.knowledge-detail-chip.topic {
    background: rgba(20, 38, 58, .07);
    color: #4a5867;
}

.knowledge-detail-header h1 {
    margin: 18px 0 0;
    color: var(--detail-navy);
    font-family: "Noto Serif TC", "Songti TC", serif;
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 900;
    line-height: 1.38;
    letter-spacing: .01em;
}

.knowledge-detail-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin: 20px 0 0;
    color: var(--detail-muted);
    font-size: 15px;
}

.knowledge-detail-header .knowledge-detail-meta {
    padding-bottom: 22px;
    border-bottom: 1px solid var(--detail-line);
}

.knowledge-detail-figure {
    margin: 26px 0 0;
}

.knowledge-detail-figure img {
    display: block;
    width: 100%;
    max-height: 520px;
    border-radius: 14px;
    object-fit: cover;
}

.knowledge-detail-keybox {
    margin-top: 30px;
    padding: 24px 26px;
    border: 1px solid var(--detail-line);
    border-radius: 12px;
    background: var(--detail-paper);
}

.knowledge-detail-keybox h2 {
    margin: 0 0 12px;
    color: var(--detail-navy);
    font-family: "Noto Serif TC", "Songti TC", serif;
    font-size: 20px;
    font-weight: 700;
}

.knowledge-detail-keybox p,
.knowledge-detail-keybox ul {
    margin: 0;
    font-size: 17px;
    line-height: 1.9;
}

.knowledge-detail-keybox ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-left: 1.35em;
}

.knowledge-detail .knowledge-article-body {
    margin-top: 28px;
    color: var(--detail-ink);
    font-size: 18px;
    line-height: 2.05;
    letter-spacing: .01em;
}

.knowledge-detail .knowledge-article-body p {
    margin: 18px 0 0;
}

.knowledge-detail .knowledge-article-body h2 {
    margin: 40px 0 0;
    color: var(--detail-navy);
    font-family: "Noto Serif TC", "Songti TC", serif;
    font-size: 28px;
    font-weight: 700;
    line-height: 1.5;
    scroll-margin-top: 100px;
}

.knowledge-detail .knowledge-article-body h3 {
    margin: 30px 0 0;
    color: var(--detail-navy);
    font-size: 22px;
}

.knowledge-detail .knowledge-article-body ul,
.knowledge-detail .knowledge-article-body ol {
    margin: 18px 0 0;
    padding-left: 1.4em;
}

.knowledge-detail .knowledge-article-body li + li {
    margin-top: 10px;
}

.knowledge-detail .knowledge-article-body blockquote {
    margin: 34px 0 0;
    padding: 22px 26px;
    border: 0;
    border-radius: 12px;
    background: var(--detail-navy);
    color: #e8edf2;
    font-size: 18px;
    line-height: 1.9;
}

.knowledge-detail .knowledge-article-body a {
    color: #0f4c7a;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.knowledge-detail .knowledge-article-body img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 28px auto;
    border-radius: 10px;
}

.knowledge-detail-side {
    position: sticky;
    top: 24px;
}

.knowledge-detail-toc {
    padding: 20px 22px;
    border: 1px solid var(--detail-line);
    border-radius: 12px;
    background: var(--detail-paper);
}

.knowledge-detail-toc[hidden] {
    display: none;
}

.knowledge-detail-toc h2 {
    margin: 0 0 12px;
    color: var(--detail-navy);
    font-family: "Noto Serif TC", "Songti TC", serif;
    font-size: 17px;
    font-weight: 700;
}

.knowledge-detail-toc ol {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 0;
    padding-left: 1.25em;
    font-size: 15px;
    line-height: 1.65;
}

.knowledge-detail-toc a {
    display: block;
    padding: 4px 0;
    color: #4a5867;
}

.knowledge-detail-toc a:hover,
.knowledge-detail-toc a.active {
    color: var(--detail-orange);
}

.knowledge-detail-toc a.active {
    font-weight: 700;
}

.knowledge-detail-tags {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--detail-line);
}

.knowledge-detail-tags h2 {
    margin: 0 0 14px;
    color: var(--detail-navy);
    font-family: "Noto Serif TC", "Songti TC", serif;
    font-size: 18px;
}

.knowledge-detail-tags ul {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.knowledge-detail-tags a {
    display: inline-flex;
    align-items: center;
    min-height: 42px;
    padding: 0 16px;
    border: 1px solid rgba(20, 38, 58, .24);
    border-radius: 999px;
    background: var(--detail-paper);
    color: var(--detail-navy);
}

.knowledge-detail-tags a:hover {
    border-color: var(--detail-orange);
    color: var(--detail-orange);
}

.knowledge-detail-back {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    min-height: 46px;
    margin-top: 34px;
    padding: 0 22px;
    border: 1px solid var(--detail-navy);
    border-radius: 9px;
    color: var(--detail-navy);
}

.knowledge-detail-back:hover {
    background: rgba(20, 38, 58, .06);
    color: var(--detail-navy);
}

.knowledge-detail-related {
    margin-top: 60px;
    padding-top: 34px;
    border-top: 1px solid var(--detail-line);
}

.knowledge-detail-related > h2 {
    margin: 0 0 20px;
    color: var(--detail-navy);
    font-family: "Noto Serif TC", "Songti TC", serif;
    font-size: 26px;
    font-weight: 700;
}

.knowledge-detail-related-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.knowledge-detail-related-card {
    overflow: hidden;
    border: 1px solid var(--detail-line);
    border-radius: 12px;
    background: var(--detail-paper);
    transition: transform .2s, border-color .2s;
}

.knowledge-detail-related-card:hover {
    transform: translateY(-3px);
    border-color: var(--detail-navy);
}

.knowledge-detail-related-cover {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 160px;
    background: #dfe3e8;
    color: var(--detail-muted);
}

.knowledge-detail-related-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.knowledge-detail-related-body {
    padding: 18px 20px 22px;
}

.knowledge-detail-related-body h3 {
    margin: 14px 0 0;
    font-family: "Noto Serif TC", "Songti TC", serif;
    font-size: 20px;
    font-weight: 700;
    line-height: 1.55;
}

.knowledge-detail-related-body h3 a {
    color: var(--detail-navy);
}

.knowledge-detail-related-body h3 a:hover {
    color: var(--detail-orange);
}

@media (max-width: 960px) {
    .knowledge-detail-layout {
        grid-template-columns: 1fr;
        gap: 34px;
    }

    .knowledge-detail-side {
        position: static;
    }

    .knowledge-detail-related-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 600px) {
    .knowledge-detail-wrap {
        padding-left: 20px;
        padding-right: 20px;
    }

    .knowledge-detail-layout {
        margin-top: 22px;
    }

    .knowledge-detail-header h1 {
        font-size: 26px;
    }

    .knowledge-detail .knowledge-article-body {
        font-size: 17px;
    }

    .knowledge-detail .knowledge-article-body h2 {
        font-size: 23px;
    }

    .knowledge-detail-keybox {
        padding: 22px 20px;
    }

    .knowledge-detail-related-grid {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    .knowledge-detail-related-card {
        transition: none;
    }

    .knowledge-detail-related-card:hover {
        transform: none;
    }
}