@import url("/knowledge/v0-2.css");

.knowledge-page {
  --knowledge-bg: #070808;
  --knowledge-surface: rgba(21, 23, 25, 0.88);
  background:
    radial-gradient(circle at 12% 8%, rgba(187, 204, 215, 0.08), transparent 24rem),
    radial-gradient(circle at 88% 16%, rgba(118, 33, 176, 0.08), transparent 28rem),
    var(--knowledge-bg);
}

.knowledge-page .site-header {
  color: var(--surge-text);
}

.knowledge-page h1,
.knowledge-page h2,
.knowledge-page h3 {
  font-family: var(--font-body);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.12;
}

.knowledge-hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  padding-top: clamp(8rem, 14vw, 12rem);
  background:
    linear-gradient(180deg, rgba(7, 8, 8, 0.04), rgba(7, 8, 8, 0.9)),
    radial-gradient(circle at 78% 45%, rgba(182, 0, 168, 0.1), transparent 30rem);
}

.knowledge-hero::before {
  position: absolute;
  z-index: 0;
  inset: 0;
  pointer-events: none;
  content: "";
  opacity: 0.16;
  background-image:
    repeating-linear-gradient(108deg, transparent 0 3px, rgba(255, 255, 255, 0.018) 3px 4px),
    repeating-linear-gradient(18deg, transparent 0 5px, rgba(0, 0, 0, 0.05) 5px 6px);
}

.knowledge-hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  align-items: center;
  gap: clamp(3rem, 6vw, 6rem);
  grid-template-columns: minmax(0, 1.08fr) minmax(22rem, 0.92fr);
}

.knowledge-hero-title {
  width: min-content;
  line-height: 0.88;
}

.knowledge-brand-en,
.knowledge-brand-cn {
  display: block;
}

.knowledge-brand-en {
  font-family: var(--font-latin);
  font-size: clamp(5rem, 9vw, 9rem);
  font-weight: 900;
  letter-spacing: -0.065em;
  line-height: 0.82;
  white-space: nowrap;
}

.knowledge-brand-cn {
  margin-top: var(--space-3);
  font-family: var(--font-body);
  font-size: clamp(2.15rem, 3.9vw, 4rem);
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 1;
  white-space: nowrap;
}

.knowledge-quote {
  position: relative;
  max-width: 44rem;
  margin-top: var(--space-5);
  padding-left: clamp(1.5rem, 2.5vw, 2.25rem);
  color: rgba(215, 226, 234, 0.78);
  font-size: clamp(1.05rem, 0.92rem + 0.52vw, 1.32rem);
  line-height: 1.8;
  text-wrap: pretty;
}

.knowledge-quote::before {
  position: absolute;
  top: -0.08em;
  left: 0;
  color: rgba(187, 204, 215, 0.42);
  content: "“";
  font-family: var(--font-body);
  font-size: 3.25rem;
  font-weight: 700;
  line-height: 1;
}

.knowledge-quote strong {
  color: var(--surge-text);
  font-weight: 700;
}

.knowledge-hero-copy .button-row { margin-top: var(--space-4); }

[data-lightfield] {
  --spot-x: 50%;
  --spot-y: 50%;
  --tilt-x: 0deg;
  --tilt-y: 0deg;
  --lift: 0px;
  position: relative;
  isolation: isolate;
  transform: perspective(1000px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y)) translateY(var(--lift));
  transform-style: preserve-3d;
  transition: transform 220ms var(--ease), border-color 220ms ease, box-shadow 220ms ease;
}

[data-lightfield]::before,
[data-lightfield]::after {
  position: absolute;
  z-index: -1;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  content: "";
}

[data-lightfield]::before {
  background:
    radial-gradient(32rem circle at var(--spot-x) var(--spot-y), rgba(238, 245, 249, 0.13), transparent 42%),
    radial-gradient(20rem circle at var(--spot-x) var(--spot-y), rgba(182, 0, 168, 0.1), transparent 65%);
  opacity: 0.42;
  transition: opacity 220ms ease;
}

[data-lightfield]::after {
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(115deg, rgba(255, 255, 255, 0.08), transparent 19%, transparent 76%, rgba(190, 76, 0, 0.035));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), inset 0 -1px 0 rgba(0, 0, 0, 0.42);
}

[data-lightfield] > * { position: relative; z-index: 1; }
[data-lightfield][data-pointer-active="true"]::before,
[data-lightfield][data-touch-active="true"]::before { opacity: 1; }
[data-lightfield][data-touch-active="true"] { --lift: -3px; }
[data-lightfield]:focus-within { box-shadow: 0 0 0 2px rgba(238, 245, 249, 0.18), 0 2rem 6rem rgba(0, 0, 0, 0.35); }

.knowledge-hero-visual {
  aspect-ratio: 1003 / 1254;
  overflow: hidden;
  border: 1px solid rgba(215, 226, 234, 0.16);
  border-radius: clamp(2rem, 4vw, 3.5rem);
  background: #050505;
  box-shadow: 0 2.25rem 7rem rgba(0, 0, 0, 0.42);
}

.knowledge-hero-visual::after { border-color: rgba(255, 255, 255, 0.12); }

.knowledge-hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.04);
}

.knowledge-proof {
  position: relative;
  z-index: 1;
  display: grid;
  margin-top: clamp(4rem, 8vw, 7rem);
  padding-block: var(--space-3);
  border-top: 1px solid var(--surge-line-light);
  color: rgba(215, 226, 234, 0.48);
  font-size: var(--type-label);
  grid-template-columns: repeat(3, 1fr);
}

.knowledge-proof span:nth-child(2) { text-align: center; }
.knowledge-proof span:last-child { text-align: right; }

.pulse-section,
.public-boundary { padding-block: var(--section-space); }

.knowledge-section-head {
  display: grid;
  align-items: end;
  margin-bottom: clamp(2.5rem, 6vw, 5rem);
  gap: var(--space-5);
  grid-template-columns: minmax(0, 1.25fr) minmax(18rem, 0.75fr);
}

.knowledge-section-head h2 {
  max-width: 12ch;
  font-size: var(--type-display);
}

.knowledge-section-head > p {
  max-width: 34rem;
  color: rgba(215, 226, 234, 0.62);
  line-height: var(--leading-body);
}

.pulse-stage {
  overflow: hidden;
  margin: 0;
  border: 1px solid rgba(215, 226, 234, 0.17);
  border-radius: clamp(1.5rem, 4vw, 3rem);
  background: var(--knowledge-surface);
  box-shadow: 0 2.25rem 7rem rgba(0, 0, 0, 0.38);
}

.pulse-stage video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #050505;
  object-fit: cover;
}

.pulse-stage figcaption {
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  padding: 1rem 1.5rem;
  color: rgba(215, 226, 234, 0.5);
  font-size: var(--type-label);
  gap: var(--space-3);
}

.pulse-stage figcaption span + span { margin-left: auto; }
.pulse-stage figcaption a { border-bottom: 1px solid currentColor; color: var(--surge-metal-light); font-weight: 700; }

.knowledge-library {
  padding-block: var(--section-space);
  border-radius: var(--radius-section) var(--radius-section) 0 0;
}

.knowledge-section-head-dark > p { color: rgba(12, 12, 12, 0.62); }

.knowledge-filter {
  position: sticky;
  z-index: 12;
  top: 5.6rem;
  display: grid;
  align-items: end;
  padding: 1rem;
  border: 1px solid rgba(12, 12, 12, 0.12);
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 1.2rem 4rem rgba(12, 12, 12, 0.08);
  backdrop-filter: blur(18px);
  gap: 0.75rem;
  grid-template-columns: minmax(14rem, 1.4fr) minmax(10rem, 0.8fr) minmax(12rem, 0.9fr) auto;
}

.knowledge-filter label { display: grid; gap: 0.4rem; }
.knowledge-filter label > span { color: rgba(12, 12, 12, 0.68); font-size: 0.7rem; font-weight: 700; letter-spacing: 0.06em; }
.knowledge-filter input,
.knowledge-filter select,
.knowledge-filter button {
  width: 100%;
  min-height: 3rem;
  padding: 0 0.9rem;
  border: 1px solid rgba(12, 12, 12, 0.16);
  border-radius: 0.75rem;
  background: #fff;
  color: var(--surge-ink);
}

.knowledge-filter button { width: auto; cursor: pointer; font-weight: 700; }

.filter-summary {
  display: flex;
  justify-content: space-between;
  padding-block: 1.25rem 1.75rem;
  color: rgba(12, 12, 12, 0.68);
  font-size: var(--type-label);
  gap: var(--space-3);
}

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

.knowledge-card {
  scroll-margin-top: 12rem;
  overflow: hidden;
  padding: clamp(1.4rem, 3vw, 2.2rem);
  border: 1px solid rgba(12, 12, 12, 0.12);
  border-radius: 1.5rem;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.94), rgba(234, 237, 238, 0.8));
  box-shadow: 0 1rem 3rem rgba(18, 22, 24, 0.07), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.knowledge-card::before { background: radial-gradient(26rem circle at var(--spot-x) var(--spot-y), rgba(255, 255, 255, 0.9), transparent 44%), radial-gradient(18rem circle at var(--spot-x) var(--spot-y), rgba(118, 33, 176, 0.06), transparent 68%); }
.knowledge-card::after { border-color: rgba(255, 255, 255, 0.78); }
.knowledge-card[hidden] { display: none; }
.knowledge-card:target { border-color: rgba(118, 33, 176, 0.45); box-shadow: 0 0 0 3px rgba(118, 33, 176, 0.1), 0 1.6rem 4rem rgba(18, 22, 24, 0.12); }

.knowledge-card-top {
  display: grid;
  align-items: center;
  color: rgba(12, 12, 12, 0.5);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  grid-template-columns: auto 1fr auto;
  gap: 0.75rem;
}

.knowledge-card-top strong {
  padding: 0.35rem 0.55rem;
  border: 1px solid rgba(12, 12, 12, 0.12);
  border-radius: 999px;
  color: rgba(12, 12, 12, 0.68);
  font-weight: 700;
  letter-spacing: 0;
}

.knowledge-card h3 {
  margin-top: clamp(3rem, 6vw, 5rem);
  font-size: clamp(1.65rem, 2.5vw, 2.5rem);
}

.knowledge-summary {
  max-width: 36rem;
  margin-top: 1rem;
  color: rgba(12, 12, 12, 0.66);
  line-height: 1.75;
}

.knowledge-card details { margin-top: 1.5rem; border-top: 1px solid rgba(12, 12, 12, 0.13); }
.knowledge-card summary { display: flex; min-height: 3.5rem; align-items: center; justify-content: space-between; cursor: pointer; font-size: var(--type-label); font-weight: 700; list-style: none; }
.knowledge-card summary::-webkit-details-marker { display: none; }
.knowledge-card summary::after { content: "+"; font-size: 1.5rem; font-weight: 400; }
.knowledge-card details[open] summary::after { content: "−"; }
.knowledge-detail { padding: 0.5rem 0 0.25rem; }
.knowledge-detail dl { display: grid; gap: 1rem; }
.knowledge-detail dl div { display: grid; padding-bottom: 1rem; border-bottom: 1px solid rgba(12, 12, 12, 0.09); gap: 0.3rem; }
.knowledge-detail dt,
.tag-columns span { color: rgba(12, 12, 12, 0.5); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.06em; }
.knowledge-detail dd { color: rgba(12, 12, 12, 0.74); font-size: 0.9rem; line-height: 1.65; }
.tag-columns { display: grid; margin-top: 1rem; grid-template-columns: 1fr 1fr; gap: 1rem; }
.tag-columns ul { display: flex; flex-wrap: wrap; margin-top: 0.6rem; padding: 0; list-style: none; gap: 0.45rem; }
.tag-columns li { padding: 0.3rem 0.5rem; border-radius: 0.5rem; background: rgba(12, 12, 12, 0.055); font-size: 0.72rem; }
.deep-link { display: inline-flex; margin-top: 1.4rem; min-height: 2.75rem; align-items: center; border-bottom: 1px solid currentColor; font-size: var(--type-label); font-weight: 700; }
.no-results { padding: 4rem 0; color: rgba(12, 12, 12, 0.62); text-align: center; }

.boundary-status {
  display: grid;
  overflow: hidden;
  margin-bottom: 1rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid rgba(215, 226, 234, 0.17);
  border-radius: 1.5rem;
  background: linear-gradient(145deg, rgba(25, 28, 30, 0.9), rgba(9, 10, 11, 0.96));
  box-shadow: 0 2rem 6rem rgba(0, 0, 0, 0.3);
  grid-template-columns: minmax(18rem, 0.8fr) minmax(0, 1.2fr);
  gap: var(--space-5);
}

.boundary-status > div > span,
.boundary-cards > article > span { color: rgba(215, 226, 234, 0.42); font-size: 0.68rem; letter-spacing: 0.08em; }
.boundary-status h3 { margin-top: 2.5rem; font-size: var(--type-h2); }
.boundary-status h3 + p { margin-top: 0.7rem; color: rgba(215, 226, 234, 0.58); }
.boundary-status dl { display: grid; background: rgba(215, 226, 234, 0.13); gap: 1px; grid-template-columns: 1fr 1fr; }
.boundary-status dl div { padding: 1rem; background: rgba(7, 8, 8, 0.84); }
.boundary-status dt { color: rgba(215, 226, 234, 0.42); font-size: 0.65rem; letter-spacing: 0.06em; }
.boundary-status dd { margin-top: 0.5rem; color: var(--surge-text); font-family: var(--font-latin); font-size: 0.75rem; font-weight: 600; }
.boundary-cards { display: grid; gap: 1rem; grid-template-columns: repeat(3, 1fr); }
.boundary-cards article { min-height: 19rem; overflow: hidden; padding: 2rem; border: 1px solid rgba(215, 226, 234, 0.15); border-radius: 1.5rem; background: linear-gradient(145deg, rgba(24, 27, 29, 0.78), rgba(9, 10, 11, 0.92)); }
.boundary-cards h3 { margin-top: 5rem; font-size: var(--type-h3); }
.boundary-cards p { margin-top: 1rem; color: rgba(215, 226, 234, 0.56); font-size: 0.92rem; line-height: 1.75; }

.method-section { padding-block: var(--section-space); }
.method-panel > div:first-child { display: grid; grid-template-columns: 1fr minmax(16rem, 0.6fr); gap: var(--space-5); }
.method-panel h2 { font-size: var(--type-display); }
.method-panel > div:first-child > p:last-child { align-self: end; color: rgba(12, 12, 12, 0.62); line-height: 1.75; }
.method-panel > details { margin-top: var(--space-5); border-block: 1px solid var(--surge-line-dark); }
.method-panel > details > summary { display: flex; min-height: 5rem; align-items: center; justify-content: space-between; cursor: pointer; font-weight: 700; list-style: none; }
.method-panel > details > summary::-webkit-details-marker { display: none; }
.method-panel > details > summary::after { content: "+"; font-size: 2rem; font-weight: 400; }
.method-panel > details[open] > summary::after { content: "−"; }
.method-grid { display: grid; padding-block: 1.5rem 2.5rem; gap: 1rem; grid-template-columns: repeat(3, 1fr); }
.method-grid article { padding: 1.5rem; border: 1px solid var(--surge-line-dark); border-radius: 1.25rem; }
.method-grid span { color: rgba(12, 12, 12, 0.48); font-size: 0.7rem; letter-spacing: 0.08em; }
.method-grid h3 { margin-top: 3rem; font-size: var(--type-h3); }
.method-grid p { margin-top: 0.8rem; color: rgba(12, 12, 12, 0.62); font-size: 0.9rem; line-height: 1.7; }

.knowledge-footer { padding-block: 2rem 3rem; border-top: 1px solid var(--surge-line-light); background: var(--surge-bg); }
.knowledge-footer .shell { display: grid; align-items: center; color: #929ca2; font-size: var(--type-label); grid-template-columns: auto 1fr auto; gap: var(--space-4); }
.knowledge-footer p { justify-self: center; }
.knowledge-footer > .shell > a:last-child { color: var(--surge-metal-light); }

@media (hover: hover) and (pointer: fine) {
  [data-lightfield]:hover { --lift: -5px; border-color: rgba(238, 245, 249, 0.26); box-shadow: 0 2.25rem 7rem rgba(0, 0, 0, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.08); }
  .knowledge-card[data-lightfield]:hover { border-color: rgba(12, 12, 12, 0.18); box-shadow: 0 1.8rem 4.5rem rgba(18, 22, 24, 0.13), inset 0 1px 0 rgba(255, 255, 255, 0.96); }
}

@media (hover: none), (pointer: coarse) {
  [data-lightfield] { --tilt-x: 0deg !important; --tilt-y: 0deg !important; }
}

@media (max-width: 63.999rem) {
  .knowledge-hero { min-height: auto; }
  .knowledge-hero-layout { grid-template-columns: 1fr; }
  .knowledge-hero-visual { width: min(100%, 34rem); justify-self: center; }
  .knowledge-section-head { grid-template-columns: 1fr; gap: var(--space-3); }
  .knowledge-filter { position: relative; top: auto; grid-template-columns: 1fr 1fr; }
  .knowledge-filter label:first-child { grid-column: 1 / -1; }
  .boundary-status { grid-template-columns: 1fr; }
  .boundary-cards { grid-template-columns: 1fr; }
  .boundary-cards article { min-height: 0; }
  .boundary-cards h3 { margin-top: 3rem; }
}

@media (max-width: 47.999rem) {
  .knowledge-hero { padding-top: 7.5rem; }
  .knowledge-brand-en { font-size: clamp(4.5rem, 24vw, 6rem); }
  .knowledge-brand-cn { margin-top: var(--space-2); font-size: clamp(2rem, 10vw, 2.7rem); letter-spacing: 0.12em; }
  .knowledge-quote { margin-top: var(--space-4); padding-left: 1.5rem; font-size: 1rem; line-height: 1.76; }
  .knowledge-proof { gap: 0.65rem; grid-template-columns: 1fr; }
  .knowledge-proof span:nth-child(2), .knowledge-proof span:last-child { text-align: left; }
  .pulse-stage figcaption { align-items: flex-start; flex-direction: column; }
  .pulse-stage figcaption span + span { margin-left: 0; }
  .knowledge-filter { grid-template-columns: 1fr; }
  .knowledge-filter label:first-child { grid-column: auto; }
  .knowledge-filter button { width: 100%; }
  .filter-summary { flex-direction: column; }
  .knowledge-grid { grid-template-columns: 1fr; }
  .knowledge-card h3 { margin-top: 3rem; }
  .tag-columns { grid-template-columns: 1fr; }
  .boundary-status dl { grid-template-columns: 1fr; }
  .method-panel > div:first-child { grid-template-columns: 1fr; }
  .method-grid { grid-template-columns: 1fr; }
  .knowledge-footer .shell { grid-template-columns: 1fr; }
  .knowledge-footer p { justify-self: start; }
}

@media (prefers-reduced-motion: reduce) {
  [data-lightfield] { --lift: 0px !important; --tilt-x: 0deg !important; --tilt-y: 0deg !important; transform: none !important; }
  [data-lightfield]::before { opacity: 0.38; }
  .pulse-stage video { animation: none !important; }
}