:root {
  --knowledge-ink: #18352b;
  --knowledge-green: #1f6f50;
  --knowledge-green-dark: #124b37;
  --knowledge-mint: #e8f5ee;
  --knowledge-sand: #f5efe3;
  --knowledge-gold: #b38a3d;
  --knowledge-line: rgba(27, 83, 63, .16);
}

.knowledge-page {
  background:
    radial-gradient(circle at 90% 4%, rgba(195, 224, 207, .65), transparent 28rem),
    linear-gradient(180deg, #fbfdfb, #f6faf7 50%, #fff);
  color: var(--knowledge-ink);
}

.library-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--knowledge-line);
}

.knowledge-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0 72px;
}

.breadcrumbs {
  display: flex;
  gap: 9px;
  align-items: center;
  flex-wrap: wrap;
  margin: 0 0 24px;
  color: #5d7169;
  font-size: .9rem;
}

.breadcrumbs a { color: var(--knowledge-green-dark); }
.knowledge-eyebrow {
  display: inline-flex;
  color: var(--knowledge-green);
  font-weight: 800;
  letter-spacing: .02em;
}

.library-mega-hero,
.collection-hero {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--knowledge-line);
  border-radius: 30px;
  background: linear-gradient(135deg, rgba(255,255,255,.96), rgba(232,245,238,.9));
  box-shadow: 0 24px 70px rgba(31, 87, 66, .1);
}

.library-mega-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(250px, .7fr);
  gap: 40px;
  align-items: center;
  padding: clamp(34px, 6vw, 76px);
}

.library-mega-hero::after,
.collection-hero::after {
  content: "۞";
  position: absolute;
  inset-inline-end: -22px;
  bottom: -85px;
  color: rgba(31, 111, 80, .07);
  font-family: Amiri, serif;
  font-size: 15rem;
  pointer-events: none;
}

.library-mega-hero h1,
.collection-hero h1,
.knowledge-article__header h1 {
  max-width: 850px;
  margin: 14px 0;
  font-family: Amiri, serif;
  color: var(--knowledge-ink);
  font-size: clamp(2.3rem, 5vw, 4.6rem);
  line-height: 1.15;
}

.library-mega-hero p,
.collection-hero > p {
  max-width: 780px;
  color: #52675f;
  font-size: 1.08rem;
  line-height: 2;
}

.library-search {
  max-width: 650px;
  margin-top: 28px;
}

.library-search label {
  display: block;
  margin-bottom: 8px;
  font-weight: 800;
}

.library-search input {
  width: 100%;
  min-height: 54px;
  padding: 0 20px;
  border: 1px solid var(--knowledge-line);
  border-radius: 15px;
  background: #fff;
  color: var(--knowledge-ink);
  font: inherit;
}

.library-search input:focus {
  outline: 3px solid rgba(31, 111, 80, .2);
  border-color: var(--knowledge-green);
}

.library-metrics {
  display: grid;
  gap: 12px;
  margin: 0;
}

.library-metrics div {
  padding: 20px;
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 18px;
  background: rgba(255,255,255,.72);
}

.library-metrics dt {
  color: var(--knowledge-green-dark);
  font-family: Amiri, serif;
  font-size: 2.4rem;
  font-weight: 700;
}

.library-metrics dd { margin: 0; color: #60736c; }

.category-door-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 24px 0 58px;
}

.category-door-grid > a {
  display: flex;
  min-height: 230px;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--knowledge-line);
  border-radius: 22px;
  background: #fff;
  color: inherit;
  box-shadow: 0 12px 35px rgba(27,83,63,.06);
  transition: transform .2s ease, border-color .2s ease;
}

.category-door-grid > a:hover {
  transform: translateY(-4px);
  border-color: rgba(31,111,80,.45);
}

.category-door-grid span,
.category-door-grid small { color: var(--knowledge-green); font-weight: 800; }
.category-door-grid strong {
  margin: 9px 0;
  font-family: Amiri, serif;
  font-size: 1.7rem;
}
.category-door-grid p { flex: 1; margin: 0 0 16px; color: #64766f; line-height: 1.8; }

.catalog-heading {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: end;
  margin-bottom: 22px;
}

.catalog-heading span { color: var(--knowledge-green); font-weight: 800; }
.catalog-heading h2,
.editorial-callout h2,
.reference-directory > h2,
.correction-box h2 {
  margin: 4px 0;
  font-family: Amiri, serif;
  font-size: clamp(2rem, 4vw, 3rem);
}

.catalog-heading > p {
  margin: 0;
  color: #687a73;
  white-space: nowrap;
}

.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.knowledge-card {
  display: flex;
  min-height: 310px;
  flex-direction: column;
  padding: 25px;
  border: 1px solid var(--knowledge-line);
  border-radius: 21px;
  background: #fff;
  box-shadow: 0 14px 40px rgba(26, 78, 59, .06);
}

.knowledge-card[hidden] { display: none; }
.knowledge-card__category { color: var(--knowledge-green); font-size: .86rem; font-weight: 800; }
.knowledge-card h3 {
  margin: 12px 0 10px;
  font-family: Amiri, serif;
  font-size: 1.55rem;
  line-height: 1.45;
}
.knowledge-card h3 a { color: var(--knowledge-ink); }
.knowledge-card p { color: #61736c; line-height: 1.85; }
.knowledge-card__meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: auto;
  color: #788981;
  font-size: .76rem;
}
.knowledge-card__meta span {
  padding: 5px 8px;
  border-radius: 8px;
  background: #f3f7f4;
}
.knowledge-card__link {
  margin-top: 18px;
  color: var(--knowledge-green-dark);
  font-weight: 800;
}

.no-results {
  padding: 30px;
  border-radius: 18px;
  background: var(--knowledge-sand);
  text-align: center;
}

.editorial-callout,
.correction-box {
  margin-top: 48px;
  padding: clamp(28px, 5vw, 54px);
  border-radius: 26px;
  background: var(--knowledge-green-dark);
  color: #fff;
}
.editorial-callout h2,
.correction-box h2 { color: #fff; }
.editorial-callout p,
.correction-box p { max-width: 760px; line-height: 1.9; color: #e4f1eb; }
.editorial-callout a,
.correction-box a {
  display: inline-block;
  margin-top: 8px;
  padding: 12px 18px;
  border-radius: 12px;
  background: #fff;
  color: var(--knowledge-green-dark);
  font-weight: 800;
}

.collection-hero { padding: clamp(35px, 6vw, 70px); margin-bottom: 28px; }
.collection-count {
  display: inline-flex;
  margin-top: 18px;
  padding: 9px 14px;
  border-radius: 999px;
  background: #fff;
  color: var(--knowledge-green-dark);
  font-weight: 800;
}

.knowledge-article { max-width: 900px; margin: 0 auto; }
.knowledge-article__header {
  padding: clamp(26px, 5vw, 54px) 0 24px;
  border-bottom: 1px solid var(--knowledge-line);
}
.knowledge-deck {
  max-width: 780px;
  color: #536961;
  font-size: 1.15rem;
  line-height: 2;
}
.knowledge-byline {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.knowledge-byline span {
  padding: 7px 10px;
  border-radius: 9px;
  background: var(--knowledge-mint);
  color: #426158;
  font-size: .84rem;
}

.source-boundary,
.quran-reference-box {
  margin: 28px 0;
  padding: 23px;
  border-radius: 18px;
}
.source-boundary {
  border-inline-start: 5px solid var(--knowledge-gold);
  background: var(--knowledge-sand);
}
.source-boundary p { margin-bottom: 0; color: #685d4a; line-height: 1.9; }
.quran-reference-box {
  border: 1px solid rgba(31,111,80,.18);
  background: var(--knowledge-mint);
}
.quran-reference-box h2 { margin-top: 0; font-family: Amiri, serif; }
.quran-reference-box ul { display: flex; gap: 9px; flex-wrap: wrap; padding: 0; list-style: none; }
.quran-reference-box li {
  padding: 8px 11px;
  border-radius: 9px;
  background: #fff;
  color: var(--knowledge-green-dark);
  font-weight: 800;
}
.quran-reference-box p { margin-bottom: 0; line-height: 1.8; }

.knowledge-article__body section {
  padding: 16px 0;
}
.knowledge-article__body h2,
.article-sources h2,
.related-knowledge h2 {
  margin-bottom: 10px;
  font-family: Amiri, serif;
  color: var(--knowledge-ink);
  font-size: clamp(1.7rem, 3.5vw, 2.35rem);
}
.knowledge-article__body p,
.article-sources > p {
  color: #344f45;
  font-size: 1.05rem;
  line-height: 2.15;
}

.article-sources {
  margin-top: 30px;
  padding: 28px;
  border: 1px solid var(--knowledge-line);
  border-radius: 22px;
  background: #fff;
}
.article-sources ul { display: grid; gap: 12px; padding: 0; list-style: none; }
.article-sources li {
  display: grid;
  gap: 4px;
  padding: 14px;
  border-radius: 12px;
  background: #f7faf8;
}
.article-sources li a { color: var(--knowledge-green-dark); font-weight: 800; }
.article-sources li span { color: #667970; font-size: .9rem; }
.method-link { display: inline-block; margin-top: 12px; color: var(--knowledge-green-dark); font-weight: 800; }

.related-knowledge { margin-top: 42px; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.related-grid a {
  display: grid;
  gap: 6px;
  padding: 18px;
  border: 1px solid var(--knowledge-line);
  border-radius: 16px;
  background: #fff;
  color: var(--knowledge-ink);
}
.related-grid span { color: var(--knowledge-green); font-size: .8rem; }

.methodology-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.methodology-grid article {
  padding: 25px;
  border: 1px solid var(--knowledge-line);
  border-radius: 20px;
  background: #fff;
}
.methodology-grid article > span { color: var(--knowledge-gold); font-weight: 800; }
.methodology-grid h2 { font-family: Amiri, serif; }
.methodology-grid p { color: #60736b; line-height: 1.9; }

.reference-directory { margin-top: 55px; }
.reference-directory > div {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
}
.reference-directory article {
  padding: 22px;
  border-radius: 18px;
  background: var(--knowledge-mint);
}
.reference-directory h3 { margin-top: 0; }
.reference-directory h3 a { color: var(--knowledge-green-dark); }
.reference-directory p { color: #536a61; line-height: 1.8; }
.reference-directory span { color: #74867e; font-size: .82rem; }

.library-footer { margin-top: 0; }
.home-category-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin: 20px 0;
}
.home-category-links a {
  display: grid;
  gap: 4px;
  padding: 15px;
  border: 1px solid var(--knowledge-line);
  border-radius: 14px;
  background: rgba(255,255,255,.84);
  color: var(--knowledge-ink);
}
.home-category-links span { color: #63776f; font-size: .8rem; }

@media (max-width: 900px) {
  .library-mega-hero { grid-template-columns: 1fr; }
  .library-metrics { grid-template-columns: repeat(3, 1fr); }
  .category-door-grid,
  .home-category-links { grid-template-columns: repeat(2, 1fr); }
  .knowledge-grid,
  .methodology-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 620px) {
  .knowledge-shell { width: min(100% - 20px, 1180px); padding-top: 18px; }
  .library-mega-hero,
  .collection-hero { border-radius: 22px; padding: 27px 20px; }
  .library-mega-hero h1,
  .collection-hero h1,
  .knowledge-article__header h1 { font-size: 2.35rem; }
  .library-metrics,
  .category-door-grid,
  .home-category-links,
  .knowledge-grid,
  .methodology-grid,
  .reference-directory > div,
  .related-grid { grid-template-columns: 1fr; }
  .category-door-grid > a { min-height: 190px; }
  .knowledge-card { min-height: 0; }
  .catalog-heading { align-items: start; }
  .knowledge-byline { display: grid; }
  .quran-reference-box ul { display: grid; }
}

@media (prefers-reduced-motion: reduce) {
  .category-door-grid > a { transition: none; }
}