/* NACREBS Bilgi Merkezi — modern publication library v19.5 — light/dark editorial system */

.knowledge-page {
  position: relative;
  overflow: clip;
  background:
    radial-gradient(circle at 86% 4%, rgb(78 168 227 / 10%), transparent 29rem),
    linear-gradient(180deg, #f7fbff 0%, #fbfdff 45%, #f4f9fd 100%);
}

.knowledge-page::before {
  position: absolute;
  top: 0;
  right: 0;
  width: min(38vw, 38rem);
  aspect-ratio: 1;
  border: 1px solid rgb(2 93 192 / 5%);
  border-radius: 50%;
  box-shadow:
    0 0 0 5rem rgb(2 93 192 / 1.5%),
    0 0 0 10rem rgb(2 93 192 / 0.9%);
  content: "";
  pointer-events: none;
  transform: translate(31%, -54%);
}

.knowledge-masthead,
.knowledge-library {
  position: relative;
  z-index: 1;
}

.knowledge-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  margin: 0 0 0.9rem;
  color: var(--color-primary);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.knowledge-eyebrow::before {
  width: 1.72rem;
  height: 2px;
  flex: 0 0 auto;
  background: currentColor;
  content: "";
}

/* ---------------------------------------------------------
   Masthead — compact, confident, content-first
   --------------------------------------------------------- */
.knowledge-masthead {
  padding-block: clamp(7rem, 8.5vw, 8.3rem) clamp(3.1rem, 5vw, 4.8rem);
}

.knowledge-masthead__inner {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(27rem, 0.72fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: end;
  padding-bottom: clamp(2.2rem, 3.5vw, 3.2rem);
  border-bottom: 1px solid rgb(4 24 47 / 10%);
}

.knowledge-masthead h1 {
  color: var(--color-ink);
  font-size: clamp(3.65rem, 5.8vw, 5.75rem);
  font-weight: 800;
  letter-spacing: -0.073em;
  line-height: 0.94;
}

.knowledge-masthead__copy {
  max-width: 41rem;
  justify-self: end;
}

.knowledge-masthead__copy > p {
  color: #587087;
  font-size: clamp(0.98rem, 1.08vw, 1.07rem);
  line-height: 1.78;
}

.knowledge-masthead__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.25rem;
  align-items: center;
  margin-top: 1.35rem;
  color: #8295a5;
  font-size: 0.62rem;
  font-weight: 750;
  letter-spacing: 0.075em;
  text-transform: uppercase;
}

.knowledge-masthead__meta span + span {
  position: relative;
  padding-left: 1.1rem;
}

.knowledge-masthead__meta span + span::before {
  position: absolute;
  top: 50%;
  left: 0;
  width: 0.22rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: #9fb1bf;
  content: "";
  transform: translateY(-50%);
}

.knowledge-masthead__meta strong {
  color: var(--color-primary);
  font-size: 0.84rem;
  letter-spacing: -0.01em;
}

/* ---------------------------------------------------------
   Library header and discovery controls
   --------------------------------------------------------- */
.knowledge-library {
  padding-bottom: clamp(6rem, 9vw, 9rem);
}

.knowledge-library__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(19rem, 28rem);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  margin-bottom: 1.5rem;
}

.knowledge-library__head h2 {
  color: var(--color-ink);
  font-size: clamp(2.15rem, 3.6vw, 3.7rem);
  font-weight: 800;
  letter-spacing: -0.06em;
  line-height: 1;
}

.knowledge-search {
  position: relative;
  display: flex;
  min-height: 3.65rem;
  align-items: center;
  border: 1px solid rgb(4 24 47 / 9%);
  border-radius: 1.15rem;
  background: rgb(255 255 255 / 70%);
  box-shadow: 0 0.8rem 2rem rgb(4 24 47 / 3.5%);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-fast);
  backdrop-filter: blur(12px);
}

.knowledge-search:focus-within {
  border-color: rgb(2 93 192 / 30%);
  background: rgb(255 255 255 / 88%);
  box-shadow: 0 0 0 4px rgb(2 93 192 / 6%), 0 1rem 2.5rem rgb(4 24 47 / 4.5%);
}

.knowledge-search svg {
  position: absolute;
  left: 1rem;
  width: 1.05rem;
  color: #587087;
  pointer-events: none;
}

.knowledge-search svg path {
  stroke: currentColor;
  stroke-width: 1.55;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.knowledge-search input {
  width: 100%;
  min-height: 3.65rem;
  padding: 0.72rem 1rem 0.72rem 2.85rem;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--color-ink);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 650;
}

.knowledge-search input::placeholder {
  color: #8799a8;
  font-weight: 600;
}

.knowledge-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.5rem;
  align-items: center;
  min-height: 4.75rem;
  margin-bottom: clamp(2rem, 3.4vw, 3rem);
  border-top: 1px solid rgb(4 24 47 / 9%);
  border-bottom: 1px solid rgb(4 24 47 / 9%);
}

.knowledge-filters {
  display: flex;
  min-width: 0;
  gap: clamp(1.35rem, 2.5vw, 2.5rem);
  align-items: stretch;
  overflow-x: auto;
  scrollbar-width: none;
}

.knowledge-filters::-webkit-scrollbar {
  display: none;
}

.knowledge-filter {
  position: relative;
  display: inline-flex;
  min-height: 4.75rem;
  align-items: center;
  gap: 0.38rem;
  flex: 0 0 auto;
  padding: 0;
  border: 0;
  background: transparent;
  color: #647b8f;
  cursor: pointer;
  font: inherit;
  transition: color var(--transition-fast);
}

.knowledge-filter::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: var(--color-primary);
  content: "";
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.knowledge-filter span {
  font-size: 0.73rem;
  font-weight: 800;
  white-space: nowrap;
}

.knowledge-filter sup {
  top: -0.42em;
  color: #9babb8;
  font-size: 0.49rem;
  font-weight: 800;
}

.knowledge-filter:hover,
.knowledge-filter:focus-visible,
.knowledge-filter.is-active {
  color: var(--color-ink);
  outline: none;
}

.knowledge-filter.is-active::after {
  opacity: 1;
  transform: scaleX(1);
}

.knowledge-filter.is-active sup {
  color: var(--color-primary);
}

.knowledge-toolbar__status {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  color: #8295a5;
  font-size: 0.61rem;
  font-weight: 750;
  white-space: nowrap;
}

.knowledge-toolbar__status > span:first-child {
  max-width: 17rem;
  overflow: hidden;
  text-overflow: ellipsis;
}

.knowledge-toolbar__count {
  position: relative;
  padding-left: 0.9rem;
}

.knowledge-toolbar__count::before {
  position: absolute;
  top: 50%;
  left: 0;
  width: 0.2rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: #9fb1bf;
  content: "";
  transform: translateY(-50%);
}

.knowledge-toolbar__count strong {
  color: var(--color-primary);
  font-size: 0.68rem;
  font-weight: 800;
}

/* ---------------------------------------------------------
   Publication grid — equal-status, image-led stories
   --------------------------------------------------------- */
.knowledge-results {
  min-height: 16rem;
}

.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(3rem, 5vw, 5.2rem) clamp(1.35rem, 2.25vw, 2.35rem);
}

/* Tüm Bilgi Merkezi kartını tek, erişilebilir bağlantı olarak kullan. */
.knowledge-card--link {
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}

.knowledge-card--link:focus-visible {
  outline: 3px solid rgb(2 93 192 / 32%);
  outline-offset: 4px;
}

.knowledge-card--link:focus-visible .knowledge-card__open {
  transform: translate(2px, -2px);
}

.knowledge-card {
  min-width: 0;
}

.knowledge-card__media-link,
.knowledge-card__title-link {
  display: block;
  min-width: 0;
  color: inherit;
}

.knowledge-card__media-link {
  position: relative;
  border-radius: 1.35rem;
  outline: none;
}

.knowledge-card__media {
  aspect-ratio: 16 / 10.35;
  border: 1px solid rgb(4 24 47 / 7.5%);
  border-radius: 1.35rem;
  box-shadow: 0 1rem 2.8rem rgb(4 24 47 / 4.2%);
  transition:
    transform 420ms cubic-bezier(0.22, 1, 0.36, 1),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.knowledge-card:hover .knowledge-card__media {
  border-color: rgb(2 93 192 / 15%);
  box-shadow: 0 1.35rem 3.2rem rgb(4 24 47 / 7%);
  transform: translateY(-0.2rem);
}

.knowledge-card__media-chrome {
  position: absolute;
  z-index: 4;
  top: 0.85rem;
  right: 0.85rem;
  left: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  pointer-events: none;
}

.knowledge-card__category {
  display: inline-flex;
  min-height: 2rem;
  align-items: center;
  padding: 0.42rem 0.72rem;
  border: 1px solid rgb(255 255 255 / 46%);
  border-radius: 999px;
  background: rgb(246 251 255 / 82%);
  box-shadow: 0 0.35rem 1.2rem rgb(4 24 47 / 6%);
  color: #19486f;
  font-size: 0.56rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  backdrop-filter: blur(12px);
}

.knowledge-card__open {
  display: grid;
  width: 2.15rem;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid rgb(255 255 255 / 48%);
  border-radius: 50%;
  background: rgb(247 252 255 / 84%);
  box-shadow: 0 0.35rem 1.2rem rgb(4 24 47 / 6%);
  color: var(--color-primary);
  backdrop-filter: blur(12px);
  transition: color var(--transition-base), background var(--transition-base), transform var(--transition-base);
}

.knowledge-card__open svg {
  width: 0.95rem;
}

.knowledge-card__open path {
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.knowledge-card:hover .knowledge-card__open,
.knowledge-card__media-link:focus-visible .knowledge-card__open {
  background: var(--color-primary);
  color: #fff;
  transform: translate(0.08rem, -0.08rem);
}

.knowledge-card__body {
  padding-top: 1.25rem;
}

.knowledge-item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.52rem;
  color: #8295a5;
  font-size: 0.61rem;
  font-weight: 700;
}

.knowledge-item-meta span + span {
  position: relative;
  padding-left: 0.72rem;
}

.knowledge-item-meta span + span::before {
  position: absolute;
  top: 50%;
  left: 0;
  width: 0.18rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: #acbbc7;
  content: "";
  transform: translateY(-50%);
}

.knowledge-card__title-link {
  margin-top: 0.72rem;
}

.knowledge-card h3 {
  max-width: 29rem;
  color: var(--color-ink);
  font-size: clamp(1.25rem, 1.7vw, 1.62rem);
  font-weight: 800;
  letter-spacing: -0.043em;
  line-height: 1.18;
  text-wrap: balance;
  transition: color var(--transition-fast);
}

.knowledge-card:hover h3 {
  color: var(--color-primary-dark);
}

.knowledge-card__excerpt {
  display: -webkit-box;
  margin-top: 0.78rem;
  overflow: hidden;
  color: #60778c;
  font-size: 0.79rem;
  line-height: 1.68;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.knowledge-card__footer {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.35rem;
  padding-top: 1.05rem;
  border-top: 1px solid rgb(4 24 47 / 8%);
}

.knowledge-author {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 0.58rem;
}

.knowledge-author__avatar {
  display: grid;
  width: 2.05rem;
  aspect-ratio: 1;
  place-items: center;
  flex: 0 0 auto;
  overflow: hidden;
  border: 1px solid rgb(2 93 192 / 10%);
  border-radius: 50%;
  background: #edf6fc;
  color: var(--color-primary);
  font-size: 0.53rem;
  font-weight: 800;
}

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

.knowledge-author__copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.knowledge-author__label {
  margin-bottom: 0.03rem;
  color: #8b9ca9;
  font-size: 0.47rem;
  font-weight: 800;
  letter-spacing: 0.085em;
  text-transform: uppercase;
}

.knowledge-author__copy strong {
  max-width: 11rem;
  overflow: hidden;
  color: var(--color-ink);
  font-size: 0.67rem;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.knowledge-author__role {
  max-width: 11rem;
  overflow: hidden;
  margin-top: 0.03rem;
  color: #74899b;
  font-size: 0.56rem;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.knowledge-card__type {
  flex: 0 0 auto;
  color: #7d91a2;
  font-size: 0.57rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

/* ---------------------------------------------------------
   Media — optional real image + refined NACREBS fallback
   --------------------------------------------------------- */
.knowledge-media {
  position: relative;
  overflow: hidden;
  background: #eaf4fb;
  isolation: isolate;
}

.knowledge-media::after {
  position: absolute;
  z-index: 2;
  inset: 0;
  background:
    linear-gradient(180deg, rgb(4 24 47 / 5%) 0%, transparent 30%),
    linear-gradient(180deg, transparent 58%, rgb(4 24 47 / 12%) 100%);
  content: "";
  pointer-events: none;
}

.knowledge-media.has-image::after {
  background:
    linear-gradient(180deg, rgb(4 24 47 / 8%) 0%, transparent 28%),
    linear-gradient(180deg, transparent 60%, rgb(4 24 47 / 15%) 100%);
}

.knowledge-media__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 760ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.knowledge-card:hover .knowledge-media__image {
  transform: scale(1.035);
}

.knowledge-media__fallback {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 64% 42%, rgb(98 189 237 / 35%), transparent 14rem),
    linear-gradient(145deg, #ebf6fd 0%, #d8ebf8 48%, #f7fbfd 100%);
}

.knowledge-media[data-theme="medical"] .knowledge-media__fallback {
  background:
    radial-gradient(circle at 64% 42%, rgb(57 173 194 / 29%), transparent 14rem),
    linear-gradient(145deg, #eaf8f9 0%, #dbeff3 48%, #f7fbfb 100%);
}

.knowledge-media[data-theme="research"] .knowledge-media__fallback {
  background:
    radial-gradient(circle at 64% 42%, rgb(70 139 211 / 30%), transparent 14rem),
    linear-gradient(145deg, #eef5fc 0%, #dce9f7 48%, #f7fafd 100%);
}

.knowledge-media__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgb(20 103 177 / 5%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(20 103 177 / 5%) 1px, transparent 1px);
  background-size: 2.7rem 2.7rem;
  mask-image: radial-gradient(circle at 60% 42%, #000 8%, transparent 74%);
}

.knowledge-media__ring {
  position: absolute;
  top: 50%;
  left: 61%;
  aspect-ratio: 1;
  border: 1px solid rgb(2 93 192 / 15%);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.knowledge-media__ring--one { width: 27%; box-shadow: 0 0 0 0.9rem rgb(67 153 214 / 6%); }
.knowledge-media__ring--two { width: 48%; border-color: rgb(2 93 192 / 11%); }
.knowledge-media__ring--three { width: 69%; border-color: rgb(2 93 192 / 8%); }

.knowledge-media__beam {
  position: absolute;
  left: 8%;
  width: 78%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgb(2 93 192 / 28%), transparent);
  transform-origin: center;
}

.knowledge-media__beam--one { top: 38%; transform: rotate(9deg); }
.knowledge-media__beam--two { top: 61%; transform: rotate(-24deg); }

.knowledge-media__dot {
  position: absolute;
  z-index: 1;
  width: 0.46rem;
  aspect-ratio: 1;
  border: 2px solid #fff;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 1px rgb(2 93 192 / 18%), 0 0 1rem rgb(2 93 192 / 20%);
}

.knowledge-media__dot--one { top: 19%; left: 23%; }
.knowledge-media__dot--two { top: 53%; right: 10%; width: 0.64rem; }
.knowledge-media__dot--three { bottom: 13%; left: 37%; width: 0.4rem; }

.knowledge-media__core {
  position: absolute;
  top: 50%;
  left: 61%;
  width: 16%;
  aspect-ratio: 1;
  border: 1px solid rgb(255 255 255 / 58%);
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 28%, #fff 0 8%, rgb(255 255 255 / 38%) 12%, transparent 30%),
    linear-gradient(145deg, #bce7fb, #2d8bd0 62%, #0870bf);
  box-shadow:
    inset -0.5rem -0.6rem 1rem rgb(3 67 120 / 18%),
    0 0 2.4rem rgb(58 154 216 / 30%);
  transform: translate(-50%, -50%);
}

/* ---------------------------------------------------------
   Empty / focus states
   --------------------------------------------------------- */
.knowledge-empty {
  display: none;
  min-height: 16rem;
  place-items: center;
  padding: 2rem;
  border-top: 1px solid rgb(4 24 47 / 10%);
  border-bottom: 1px solid rgb(4 24 47 / 10%);
  text-align: center;
}

.knowledge-empty.is-visible {
  display: grid;
}

.knowledge-empty strong {
  display: block;
  color: var(--color-ink);
  font-size: 1.05rem;
}

.knowledge-empty p {
  max-width: 31rem;
  margin-top: 0.45rem;
  color: var(--color-muted);
  font-size: 0.8rem;
  line-height: 1.6;
}

.knowledge-card__media-link:focus-visible,
.knowledge-card__title-link:focus-visible {
  outline: 3px solid rgb(2 93 192 / 20%);
  outline-offset: 4px;
  border-radius: 0.4rem;
}

.knowledge-card__media-link:focus-visible {
  border-radius: 1.35rem;
}

.knowledge-page + .footer-system,
.knowledge-page .footer-system {
  margin-top: 0;
}

/* ---------------------------------------------------------
   Responsive
   --------------------------------------------------------- */
@media (max-width: 68.749rem) {
  .knowledge-masthead__inner {
    grid-template-columns: minmax(0, 0.82fr) minmax(22rem, 1fr);
    gap: 3rem;
  }

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

@media (max-width: 48rem) {
  .knowledge-page::before {
    width: 27rem;
    transform: translate(45%, -56%);
  }

  .knowledge-masthead {
    padding-block: 6.25rem 2.85rem;
  }

  .knowledge-masthead__inner {
    grid-template-columns: 1fr;
    gap: 1.1rem;
    padding-bottom: 1.65rem;
  }

  .knowledge-masthead h1 {
    font-size: clamp(3.1rem, 14vw, 4.5rem);
    line-height: 0.95;
  }

  .knowledge-masthead__copy {
    max-width: 38rem;
    justify-self: stretch;
  }

  .knowledge-masthead__copy > p {
    font-size: 0.9rem;
    line-height: 1.7;
  }

  .knowledge-masthead__meta {
    margin-top: 1rem;
    font-size: 0.56rem;
  }

  .knowledge-library__head {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin-bottom: 1.25rem;
  }

  .knowledge-library__head h2 {
    font-size: clamp(2rem, 9.5vw, 3rem);
  }

  .knowledge-search {
    min-height: 3.55rem;
    border-radius: 1rem;
  }

  .knowledge-search input {
    min-height: 3.55rem;
  }

  .knowledge-toolbar {
    grid-template-columns: 1fr;
    gap: 0;
    min-height: auto;
    margin-bottom: 2rem;
  }

  .knowledge-filters {
    min-height: 4.25rem;
    gap: 1.4rem;
    margin-right: -1.1rem;
    padding-right: 1.1rem;
    scroll-snap-type: x proximity;
  }

  .knowledge-filter {
    min-height: 4.25rem;
    scroll-snap-align: start;
  }

  .knowledge-toolbar__status {
    min-height: 2.9rem;
    justify-content: space-between;
    border-top: 1px solid rgb(4 24 47 / 7%);
  }

  .knowledge-toolbar__status > span:first-child {
    max-width: 75%;
  }

  .knowledge-grid {
    grid-template-columns: 1fr;
    gap: 2.8rem;
  }

  .knowledge-card__media {
    aspect-ratio: 16 / 10;
    border-radius: 1.15rem;
  }

  .knowledge-card__media-link {
    border-radius: 1.15rem;
  }

  .knowledge-card__body {
    padding-top: 1.05rem;
  }

  .knowledge-card h3 {
    font-size: clamp(1.3rem, 5.7vw, 1.62rem);
  }

  .knowledge-card__excerpt {
    font-size: 0.8rem;
  }
}

@media (max-width: 30rem) {
  .knowledge-eyebrow {
    font-size: 0.58rem;
    letter-spacing: 0.14em;
  }

  .knowledge-masthead__meta span + span {
    flex-basis: 100%;
    padding-left: 0;
  }

  .knowledge-masthead__meta span + span::before {
    display: none;
  }

  .knowledge-card__media-chrome {
    top: 0.7rem;
    right: 0.7rem;
    left: 0.7rem;
  }

  .knowledge-card__category {
    min-height: 1.85rem;
    padding-inline: 0.62rem;
    font-size: 0.52rem;
  }

  .knowledge-card__open {
    width: 2rem;
  }

  .knowledge-card__footer {
    align-items: flex-end;
  }

  .knowledge-author__copy strong,
  .knowledge-author__role {
    max-width: 10rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .knowledge-media__image,
  .knowledge-card__media,
  .knowledge-card__open,
  .knowledge-filter::after {
    transition: none;
  }
}


/* =========================================================
   v19.5 — Light / dark editorial rhythm
   One page heading only; discovery begins directly below.
   ========================================================= */
.knowledge-page {
  background: #f6fafe;
}

.knowledge-page::before {
  display: none;
}

.knowledge-masthead {
  overflow: hidden;
  isolation: isolate;
  padding-block: clamp(6.8rem, 8vw, 8rem) clamp(3.6rem, 5.2vw, 5.2rem);
  background:
    radial-gradient(circle at 78% 28%, rgb(72 166 225 / 20%), transparent 24rem),
    radial-gradient(circle at 12% 90%, rgb(37 106 171 / 14%), transparent 30rem),
    linear-gradient(145deg, #06182b 0%, #071f36 52%, #082844 100%);
}

.knowledge-masthead::before {
  position: absolute;
  z-index: -2;
  inset: 0;
  background-image:
    linear-gradient(rgb(255 255 255 / 2.1%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(255 255 255 / 2.1%) 1px, transparent 1px);
  background-size: 5.25rem 5.25rem;
  content: "";
  mask-image: linear-gradient(90deg, transparent 4%, #000 38%, #000 100%);
  pointer-events: none;
}

.knowledge-masthead::after {
  position: absolute;
  z-index: -1;
  top: 50%;
  right: clamp(-13rem, -8vw, -7rem);
  width: min(42vw, 39rem);
  aspect-ratio: 1;
  border: 1px solid rgb(139 202 240 / 10%);
  border-radius: 50%;
  box-shadow:
    0 0 0 4.7rem rgb(114 184 227 / 3.7%),
    0 0 0 9.4rem rgb(114 184 227 / 2.3%);
  content: "";
  transform: translateY(-50%);
  pointer-events: none;
}

.knowledge-masthead__inner {
  position: relative;
  z-index: 1;
  border-bottom-color: rgb(205 230 247 / 14%);
}

.knowledge-masthead .knowledge-eyebrow {
  color: #8bcaf0;
}

.knowledge-masthead h1 {
  color: #f8fbff;
  text-shadow: 0 0.85rem 3rem rgb(0 0 0 / 10%);
}

.knowledge-masthead__copy > p {
  color: rgb(219 235 246 / 72%);
}

.knowledge-masthead__meta {
  color: rgb(184 211 229 / 52%);
}

.knowledge-masthead__meta strong {
  color: #8bcaf0;
}

.knowledge-masthead__meta span + span::before {
  background: rgb(139 202 240 / 38%);
}

.knowledge-library {
  padding-block: clamp(3.2rem, 5.2vw, 5.2rem) clamp(6.5rem, 9vw, 9rem);
  background:
    radial-gradient(circle at 92% 7%, rgb(114 184 227 / 5.5%), transparent 25rem),
    linear-gradient(180deg, #f8fbfe 0%, #ffffff 40%, #f4f9fd 100%);
}

.knowledge-discovery {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 28rem);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  min-height: 5rem;
  border-bottom: 1px solid rgb(4 24 47 / 10%);
}

.knowledge-discovery .knowledge-filters {
  min-height: 5rem;
}

.knowledge-discovery .knowledge-filter {
  min-height: 5rem;
}

.knowledge-discovery .knowledge-search {
  min-height: 3.45rem;
  margin-block: 0.72rem;
  border-color: rgb(4 24 47 / 8.5%);
  border-radius: 1rem;
  background: rgb(255 255 255 / 78%);
  box-shadow: 0 0.7rem 2rem rgb(4 24 47 / 3%);
}

.knowledge-discovery .knowledge-search input {
  min-height: 3.45rem;
}

.knowledge-toolbar__status {
  justify-content: flex-end;
  min-height: 3rem;
  margin: 0.75rem 0 clamp(2rem, 3.5vw, 3.2rem);
}

.knowledge-toolbar__status > span:first-child {
  color: #70879a;
}

.knowledge-card__media {
  background: #eaf4fb;
}

@media (max-width: 68.749rem) {
  .knowledge-discovery {
    grid-template-columns: minmax(0, 1fr) minmax(17rem, 22rem);
    gap: 2rem;
  }
}

@media (max-width: 48rem) {
  .knowledge-masthead {
    padding-block: 6.1rem 3.25rem;
  }

  .knowledge-masthead::before {
    background-size: 3.8rem 3.8rem;
    opacity: 0.72;
    mask-image: linear-gradient(180deg, transparent 0%, #000 22%, #000 100%);
  }

  .knowledge-masthead::after {
    top: auto;
    right: -10.5rem;
    bottom: -7rem;
    width: 25rem;
    transform: none;
  }

  .knowledge-masthead__inner {
    padding-bottom: 1.55rem;
  }

  .knowledge-masthead h1 {
    font-size: clamp(3rem, 14vw, 4.25rem);
  }

  .knowledge-masthead__copy > p {
    color: rgb(219 235 246 / 76%);
  }

  .knowledge-library {
    padding-block: 2.25rem 6rem;
  }

  .knowledge-discovery {
    grid-template-columns: 1fr;
    gap: 0;
    border-bottom: 0;
  }

  .knowledge-discovery .knowledge-search {
    grid-row: 1;
    margin: 0 0 0.75rem;
  }

  .knowledge-discovery .knowledge-filters {
    grid-row: 2;
    min-height: 4.15rem;
    margin-right: -1.1rem;
    border-top: 1px solid rgb(4 24 47 / 8%);
    border-bottom: 1px solid rgb(4 24 47 / 8%);
  }

  .knowledge-discovery .knowledge-filter {
    min-height: 4.15rem;
  }

  .knowledge-toolbar__status {
    min-height: 2.75rem;
    margin: 0.35rem 0 2rem;
    justify-content: space-between;
    border: 0;
  }
}

@media (max-width: 30rem) {
  .knowledge-masthead {
    padding-bottom: 2.85rem;
  }

  .knowledge-masthead::after {
    right: -13rem;
    bottom: -8rem;
  }

  .knowledge-library {
    padding-top: 1.8rem;
  }
}

/* v19.5 compact masthead final pass */
.knowledge-masthead__inner {
  padding-bottom: 0;
  border-bottom: 0;
}

@media (max-width: 48rem) {
  .knowledge-masthead__inner {
    padding-bottom: 0;
  }
}