.knowledge-page { background: var(--ink); }
.knowledge-header { position: sticky; z-index: 20; top: 0; border-bottom: 1px solid var(--line-soft); background: rgba(12, 17, 29, .94); backdrop-filter: blur(18px); }
.knowledge-header .site-nav a[aria-current="page"] { color: var(--mist); }
.knowledge-hero { padding: clamp(8rem, 14vw, 12rem) 0 clamp(5rem, 9vw, 8rem); border-bottom: 1px solid var(--line-soft); background: radial-gradient(circle at 80% 25%, rgba(113, 152, 245, .18), transparent 28rem), linear-gradient(135deg, #0c111d, #14213a); }
.knowledge-hero__layout { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: clamp(3rem, 8vw, 8rem); align-items: end; }
.knowledge-hero h1 { max-width: 13ch; margin: 0 0 1.5rem; font-family: var(--font-display); font-size: clamp(3.5rem, 8vw, 7.4rem); font-weight: 520; letter-spacing: -.065em; line-height: .92; }
.knowledge-hero h1 em { color: var(--signal-soft); font-style: normal; }
.knowledge-hero__layout > div > p:last-child { max-width: 67ch; color: var(--muted); font-size: clamp(1.05rem, 1.7vw, 1.25rem); }
.knowledge-meter { display: grid; min-width: 12rem; padding-left: 2rem; border-left: 1px solid rgba(113, 152, 245, .55); }
.knowledge-meter strong { color: var(--signal-soft); font-family: var(--font-display); font-size: 5rem; line-height: .9; }
.knowledge-meter span { margin-top: .6rem; font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; }
.knowledge-meter small { color: var(--muted); }
.knowledge-signature { border-bottom: 1px solid var(--line-soft); background: var(--carbon); }
.signature-flow { display: flex; flex-wrap: wrap; gap: clamp(.55rem, 2vw, 1.2rem); align-items: center; margin: 2rem 0; }
.signature-flow span, .signature-flow strong { padding: .8rem 1.1rem; border: 1px solid var(--line); background: var(--ink); font-family: var(--font-mono); font-size: .75rem; text-transform: uppercase; }
.signature-flow span { color: var(--signal-soft); }
.signature-flow .is-human { border-color: var(--human); color: var(--human-soft); }
.signature-flow strong { border-color: var(--positive); color: var(--positive); }
.signature-flow i { color: var(--steel); font-style: normal; }
.knowledge-signature .shell > p:last-child { max-width: 55rem; color: var(--muted); }
.knowledge-section-head { margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.knowledge-section-head h2 { margin: 0; font-family: var(--font-display); font-size: clamp(2.8rem, 6vw, 5.5rem); font-weight: 520; letter-spacing: -.055em; line-height: .95; }
.knowledge-path-section { border-bottom: 1px solid var(--line-soft); }
.path-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.path-card { min-height: 18rem; padding: clamp(1.5rem, 3vw, 2.4rem); background: var(--carbon); transition: background 180ms ease; }
.path-card:hover { background: var(--panel); }
.path-card span, .knowledge-card > span { color: var(--signal); font-family: var(--font-mono); font-size: .67rem; letter-spacing: .1em; text-transform: uppercase; }
.path-card h2 { margin: 3rem 0 1rem; font-family: var(--font-display); font-size: clamp(1.7rem, 3vw, 2.5rem); line-height: 1; }
.path-card p { color: var(--muted); }
.knowledge-library { background: #0e1522; }
.knowledge-tools { display: flex; gap: 1rem 2rem; align-items: end; justify-content: space-between; margin-bottom: 2rem; }
.knowledge-tools label { display: grid; gap: .5rem; width: min(100%, 32rem); color: var(--muted); font-family: var(--font-mono); font-size: .67rem; letter-spacing: .1em; text-transform: uppercase; }
.knowledge-tools input { width: 100%; padding: .9rem 1rem; border: 1px solid var(--line); border-radius: 0; color: var(--mist); background: var(--ink); font: 1rem var(--font-body); }
.knowledge-tools div { display: flex; flex-wrap: wrap; gap: .45rem; }
.knowledge-tools button { padding: .6rem .8rem; border: 1px solid var(--line); background: transparent; color: var(--muted); cursor: pointer; font-family: var(--font-mono); font-size: .68rem; text-transform: uppercase; }
.knowledge-tools button[aria-pressed="true"] { border-color: var(--signal); color: var(--signal-soft); background: rgba(113, 152, 245, .1); }
.knowledge-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.knowledge-card { display: flex; min-height: 19rem; padding: 1.7rem; flex-direction: column; background: var(--carbon); }
.knowledge-card:hover { background: var(--panel); }
.knowledge-card[hidden] { display: none; }
.knowledge-card h2 { margin: 2rem 0 1rem; font-family: var(--font-display); font-size: clamp(1.45rem, 2.3vw, 2.1rem); letter-spacing: -.035em; line-height: 1.02; }
.knowledge-card p { margin: 0; color: var(--muted); }
.knowledge-card small { margin-top: auto; padding-top: 1.5rem; color: var(--signal-soft); font-family: var(--font-mono); }
.knowledge-empty { color: var(--human-soft); }
.knowledge-entry__hero { padding: clamp(7rem, 11vw, 10rem) 0 clamp(3.5rem, 6vw, 5rem); border-bottom: 1px solid var(--line-soft); background: radial-gradient(circle at 85% 10%, rgba(113, 152, 245, .15), transparent 25rem); }
.knowledge-breadcrumb { color: var(--steel); font-family: var(--font-mono); font-size: .7rem; text-transform: uppercase; }
.knowledge-breadcrumb a { color: var(--signal-soft); }
.knowledge-entry__hero h1 { max-width: 16ch; margin: 1rem 0; font-family: var(--font-display); font-size: clamp(3.5rem, 8vw, 7rem); font-weight: 520; letter-spacing: -.065em; line-height: .92; }
.knowledge-entry__summary { max-width: 68ch; color: var(--muted); font-size: clamp(1.08rem, 2vw, 1.35rem); }
.knowledge-entry__layout { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(17rem, .8fr); gap: clamp(3rem, 7vw, 7rem); padding-top: clamp(4rem, 8vw, 7rem); padding-bottom: clamp(5rem, 9vw, 8rem); }
.knowledge-prose { max-width: 74ch; }
.knowledge-prose h2 { margin: 3.5rem 0 1rem; font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3.2rem); font-weight: 520; letter-spacing: -.04em; line-height: 1; }
.knowledge-prose h2:first-child { margin-top: 0; }
.knowledge-prose p, .knowledge-prose li { color: #c7d0df; }
.knowledge-prose a, .source-panel a { color: var(--signal-soft); text-decoration: underline; text-decoration-color: rgba(181, 201, 255, .4); text-underline-offset: .2em; }
.knowledge-prose code { padding: .1rem .25rem; background: var(--panel); font-family: var(--font-mono); }
.knowledge-copy { padding: 1rem 1.1rem; border-left: 2px solid var(--line); background: rgba(24, 35, 56, .5); }
.knowledge-copy--fact { border-color: var(--signal); }
.knowledge-copy--reading { border-color: var(--human); }
.knowledge-copy--alfred { border-color: var(--positive); }
.relation-map, .source-panel { position: sticky; top: 6rem; padding: 1.3rem; border: 1px solid var(--line); background: var(--carbon); }
.relation-map__head p { margin: 0; color: var(--signal); font-family: var(--font-mono); font-size: .64rem; text-transform: uppercase; }
.relation-map h2, .source-panel h2 { margin: .5rem 0 1.2rem; font-family: var(--font-display); font-size: 1.55rem; }
.relation-map__flow { display: grid; gap: .55rem; }
.relation-node { display: grid; padding: .65rem .75rem; border: 1px solid var(--line); color: var(--mist); background: var(--ink); font-size: .82rem; }
.relation-node small { color: var(--steel); font-family: var(--font-mono); font-size: .58rem; letter-spacing: .08em; text-transform: uppercase; }
.relation-node--current { border-color: var(--signal); color: var(--signal-soft); }
.relation-node--alfred { border-color: var(--positive); color: var(--positive); }
.relation-node--personne { border-color: var(--human); }
.relation-map details { margin-top: 1rem; color: var(--muted); font-size: .78rem; }
.source-panel { position: static; margin-top: 1rem; }
.source-panel ul { padding-left: 1.1rem; }

@media (max-width: 900px) {
    .knowledge-header .site-nav { display: flex; }
    .knowledge-header .site-nav a:not([aria-current="page"]):not(.site-nav__cta) { display: none; }
    .knowledge-hero__layout, .knowledge-entry__layout { grid-template-columns: 1fr; }
    .knowledge-meter { padding: 1.5rem 0 0; border-top: 1px solid rgba(113, 152, 245, .55); border-left: 0; }
    .path-grid, .knowledge-grid { grid-template-columns: 1fr 1fr; }
    .relation-map { position: static; }
}
@media (max-width: 620px) {
    .path-grid, .knowledge-grid { grid-template-columns: 1fr; }
    .knowledge-tools { align-items: stretch; flex-direction: column; }
    .knowledge-card { min-height: 15rem; }
    .signature-flow i { transform: rotate(90deg); }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}