.knowledge-shell {
    width: min(1000px, calc(100% - 40px));
    margin: 0 auto;
    padding: 30px 0 60px;
    box-sizing: border-box;
    color: var(--theme-text);
    font-size: 17px;
    font-weight: 400;
    line-height: 1.65;
}
.knowledge-shell h1 {
    position: static;
    width: auto;
    height: auto;
    padding: 0;
    margin: 24px 0 16px;
    color: var(--theme-text);
    font-size: 38px;
    font-weight: 600;
    line-height: 1.22;
    background: none;
    text-transform: none;
}
.knowledge-content h2 {
    margin: 36px 0 16px;
    font-size: 26px;
    font-weight: 500;
    line-height: 1.3;
    color: var(--theme-text);
    text-decoration: none;
}
.knowledge-content h3 {
    margin: 24px 0 12px;
    font-size: 20px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--theme-text);
}
.knowledge-content p { margin: 0 0 18px; }
.knowledge-content ul, .knowledge-content ol { padding-left: 24px; }
.knowledge-content li { margin-bottom: 12px; padding-left: 4px; }
.knowledge-shell a { color: var(--theme-link); }
.knowledge-shell a:focus-visible { outline: 2px solid #f7961e; outline-offset: 4px; }
.knowledge-breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px 12px; font-size: 14px; }
.knowledge-meta, .knowledge-source-note { color: var(--theme-muted); font-size: 14px; }
.knowledge-lead { max-width: 880px; font-size: 19px; line-height: 1.65; }
.knowledge-feature {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 32px;
    margin: 32px 0;
    padding: 32px;
    background: var(--theme-surface);
    border: 1px solid var(--theme-border);
    border-radius: 18px;
    box-shadow: var(--theme-shadow);
}
.knowledge-feature h2 { margin-top: 12px; }
.knowledge-tag { font-size: 14px; font-weight: 500; color: var(--theme-muted); }
.knowledge-read { display: inline-block; margin-top: 4px; font-weight: 500; }
.knowledge-models { display: grid; gap: 18px; align-content: center; }
.knowledge-models > div { border-left: 3px solid #f7961e; padding: 8px 16px; }
.knowledge-models strong { display: block; font-size: 30px; color: var(--theme-header-accent); }
.knowledge-models span { display: block; font-size: 16px; }
.knowledge-links-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-bottom: 24px; }
.knowledge-links-grid > section { padding: 24px; border: 1px solid var(--theme-border); border-radius: 14px; background: var(--theme-surface); }
.knowledge-links-grid h3 { margin-top: 0; }
.knowledge-links-grid a { display: block; margin: 10px 0; }
.knowledge-comparison dt { font-weight: 500; margin-top: 16px; }
.knowledge-comparison dd { margin: 6px 0 0; }
.knowledge-comparison dl { margin: 0; }
.knowledge-note { padding: 24px; background: var(--theme-surface); border-left: 3px solid #f7961e; border-radius: 0 12px 12px 0; margin: 24px 0; }
.knowledge-note h2 { margin-top: 0; }
.knowledge-note p:last-child { margin-bottom: 0; }
.knowledge-note .fulfilment-actions { margin-bottom: 20px; }
.knowledge-toc { display: flex; flex-wrap: wrap; gap: 10px 24px; padding: 22px 24px; margin: 28px 0; border: 1px solid var(--theme-border); border-radius: 12px; }
.knowledge-toc strong { flex-basis: 100%; }
.knowledge-content section[id] { scroll-margin-top: 24px; }
@media (max-width: 610px) {
    .knowledge-shell { padding-top: 22px; font-size: 16px; }
    .knowledge-shell h1 { font-size: 29px; }
    .knowledge-content h2 { font-size: 23px; }
    .knowledge-lead { font-size: 17px; }
    .knowledge-feature, .knowledge-links-grid { grid-template-columns: 1fr; }
    .knowledge-feature { padding: 22px; gap: 24px; }
    .knowledge-links-grid > section, .knowledge-note, .knowledge-toc { padding: 20px; }
    .knowledge-content section[id] { scroll-margin-top: 80px; }
}