/* SPDX-License-Identifier: LicenseRef-VINCIS-ARR */

.knowledge-home {
  min-height: 100%;
  background: var(--page-bg);
}

.knowledge-home .knowledge-hero {
  min-height: 620px;
  display: grid;
  place-items: center;
  padding-bottom: 92px;
}

.knowledge-home .knowledge-hero .hero-copy {
  width: min(820px, 100%);
}

.knowledge-home .knowledge-hero h1 {
  font-size: clamp(3.2rem, 8.4vw, 6.8rem);
}

.knowledge-home .knowledge-title span {
  display: inline-block;
  opacity: 0;
  filter: blur(12px);
  transform-origin: 50% 78%;
  animation:
    knowledge-title-enter 0.9s cubic-bezier(0.16, 1, 0.3, 1) both,
    knowledge-title-breathe 6.4s ease-in-out infinite;
  will-change: transform, filter, opacity;
}

.knowledge-home .knowledge-title.is-en {
  font-size: clamp(3rem, 7.2vw, 5.8rem);
  white-space: nowrap;
}

.knowledge-home .knowledge-title.is-en span + span {
  margin-left: 0.18em;
}

.knowledge-home .knowledge-title span:nth-child(1) {
  animation-delay: 0.08s, 1.5s;
}

.knowledge-home .knowledge-title span:nth-child(2) {
  animation-delay: 0.16s, 1.62s;
}

.knowledge-home .knowledge-title span:nth-child(3) {
  animation-delay: 0.24s, 1.74s;
}

.knowledge-home .knowledge-title span:nth-child(4) {
  animation-delay: 0.32s, 1.86s;
}

@keyframes knowledge-title-enter {
  0% {
    opacity: 0;
    filter: blur(12px);
    transform: translateY(30px) scale(0.92) rotate(-2deg);
  }

  65% {
    opacity: 1;
    filter: blur(0);
    transform: translateY(-3px) scale(1.01) rotate(0);
  }

  100% {
    opacity: 1;
    filter: blur(0);
    transform: none;
  }
}

@keyframes knowledge-title-breathe {
  0%,
  42%,
  58%,
  100% {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
  }

  50% {
    opacity: 0.86;
    filter: blur(0.2px);
    transform: translateY(-4px);
  }
}

.knowledge-home .knowledge-search {
  position: relative;
  max-width: 720px;
  margin: 44px auto 0;
}

.knowledge-home .knowledge-search-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 62px;
  padding: 8px 9px 8px 21px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.055);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.07),
    0 24px 70px -34px rgba(130, 160, 230, 0.45);
  backdrop-filter: blur(18px);
}

.knowledge-home .knowledge-search-bar svg {
  width: 18px;
  color: var(--t-lo);
  flex: none;
}

.knowledge-home .knowledge-search-bar input {
  min-width: 0;
  flex: 1;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--t-hi);
  font: inherit;
  font-size: 15px;
}

.knowledge-home .knowledge-search-bar input::placeholder {
  color: var(--t-lo);
}

.knowledge-home .knowledge-search-bar .btn {
  min-width: 104px;
  min-height: 44px;
  justify-content: center;
  cursor: pointer;
}

.knowledge-home .knowledge-search-hints {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 18px;
}

.knowledge-home .knowledge-search-hints a {
  color: var(--t-lo);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color 0.3s;
}

.knowledge-home .knowledge-search-hints a:hover {
  color: var(--t-hi);
}

.knowledge-home .knowledge-topics {
  position: relative;
  z-index: 2;
}

.knowledge-home .knowledge-topics .track {
  animation: none;
  margin: 0 auto;
}

.knowledge-home .knowledge-topics a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--s1-fg2);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  white-space: nowrap;
  transition: color 0.3s;
}

.knowledge-home .knowledge-topics a:hover,
.knowledge-home .knowledge-topics a.is-active {
  color: var(--s1-fg);
}

.knowledge-home .knowledge-topics small {
  opacity: 0.45;
}

.knowledge-home .knowledge-library {
  padding-top: clamp(92px, 11vw, 148px);
  padding-bottom: clamp(96px, 12vw, 160px);
}

.knowledge-home.knowledge-motion-ready [data-knowledge-reveal] {
  opacity: 0;
  translate: 0 16px;
  transition:
    opacity 0.66s cubic-bezier(0.2, 0.7, 0.3, 1),
    translate 0.66s cubic-bezier(0.2, 0.7, 0.3, 1);
  transition-delay: var(--reveal-delay, 0ms);
}

.knowledge-home.knowledge-motion-ready [data-knowledge-reveal].is-visible {
  opacity: 1;
  translate: none;
}

.knowledge-home .knowledge-section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 52px;
}

.knowledge-home .knowledge-section-head .eyebrow {
  margin-bottom: 15px;
}

.knowledge-home .knowledge-section-head h2 {
  font-size: 1.75rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.knowledge-home .knowledge-section-head .count {
  color: var(--fg2);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  white-space: nowrap;
}

.knowledge-home .knowledge-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: clamp(24px, 3.5vw, 48px);
  align-items: start;
}

.knowledge-home .article-list {
  position: relative;
  overflow: hidden;
  padding: 0;
}

.knowledge-home .article-list::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    105deg,
    transparent 30%,
    color-mix(in srgb, var(--fg) 4%, transparent) 46%,
    transparent 62%
  );
  transform: translateX(-130%);
  animation: knowledge-sheen 10s var(--ease) 2.5s infinite;
}

@keyframes knowledge-sheen {
  0% {
    transform: translateX(-130%);
  }
  22%,
  100% {
    transform: translateX(130%);
  }
}

.knowledge-home .article-row {
  position: relative;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) 42px;
  gap: 18px;
  align-items: center;
  min-height: 132px;
  padding: 22px 24px;
  border-bottom: 1px solid var(--line);
  transition: background 0.4s var(--ease);
}

.knowledge-home .article-row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 2px;
  border-radius: 0 2px 2px 0;
  background: var(--good-fg);
  box-shadow: 0 0 14px color-mix(in srgb, var(--good-fg) 55%, transparent);
  opacity: 0;
  transform: scaleY(0);
  transition:
    transform 0.3s cubic-bezier(0.2, 0.7, 0.3, 1),
    opacity 0.2s ease;
}

.knowledge-home .article-row:last-child {
  border-bottom: 0;
}

.knowledge-home .article-row:hover {
  background: color-mix(in srgb, var(--fg) 3%, transparent);
}

.knowledge-home .article-row:hover::before {
  opacity: 1;
  transform: scaleY(1);
}

.knowledge-home .article-index,
.knowledge-home .article-meta,
.knowledge-home .topic-card-index {
  color: var(--fg2);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.knowledge-home .article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 14px;
  margin-bottom: 10px;
}

.knowledge-home .article-tags span {
  color: var(--good-fg);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.knowledge-home .article-row h3 {
  width: fit-content;
  padding-bottom: 3px;
  background-image: linear-gradient(var(--fg), var(--fg));
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 0 1px;
  font-size: 18px;
  line-height: 1.45;
  letter-spacing: -0.015em;
  transition:
    color 0.3s,
    background-size 0.38s cubic-bezier(0.2, 0.7, 0.3, 1);
}

.knowledge-home .article-row:hover h3 {
  color: var(--fg3);
  background-size: 100% 1px;
}

.knowledge-home .article-row .excerpt {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  max-width: 650px;
  margin: 9px 0 15px;
  color: var(--fg2);
  font-size: 14px;
  line-height: 1.65;
}

.knowledge-home .article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.knowledge-home .article-verified {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 9px;
  border: 1px solid color-mix(in srgb, var(--good-fg) 36%, transparent);
  border-radius: 100px;
  color: var(--good-fg);
}

.knowledge-home .article-verified i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  box-shadow:
    0 0 0 3px color-mix(in srgb, currentColor 18%, transparent),
    0 0 10px currentColor;
  animation: knowledge-pulse 2.6s ease-in-out infinite;
}

@keyframes knowledge-pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.38;
  }
}

.knowledge-home .article-arrow {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line2);
  border-radius: 50%;
  color: var(--fg2);
  transition: 0.35s var(--ease-out);
}

.knowledge-home .article-row:hover .article-arrow {
  transform: translate(2px, -2px);
  border-color: var(--fg2);
  color: var(--fg);
}

.knowledge-home .knowledge-side {
  display: grid;
  gap: 20px;
}

.knowledge-home .knowledge-side .card {
  padding: 0;
  overflow: hidden;
}

.knowledge-home .side-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.knowledge-home .side-head span:last-child {
  color: var(--fg2);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.16em;
}

.knowledge-home .topic-card-list {
  padding: 4px 0;
}

.knowledge-home .topic-card-row {
  position: relative;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) auto 30px;
  gap: 10px;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  transition: background 0.3s ease;
}

.knowledge-home .topic-card-row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 2px;
  border-radius: 0 2px 2px 0;
  background: var(--fg2);
  opacity: 0;
  transform: scaleY(0);
  transition:
    transform 0.28s cubic-bezier(0.2, 0.7, 0.3, 1),
    opacity 0.2s ease;
}

.knowledge-home .topic-card-row:hover::before {
  opacity: 1;
  transform: scaleY(1);
}

.knowledge-home .topic-card-row:last-child {
  border-bottom: 0;
}

.knowledge-home .topic-card-row:hover {
  background: color-mix(in srgb, var(--fg) 3%, transparent);
}

.knowledge-home .topic-card-copy {
  min-width: 0;
}

.knowledge-home .topic-card-copy strong,
.knowledge-home .topic-card-copy small {
  display: block;
}

.knowledge-home .topic-card-copy strong {
  color: var(--fg);
  font-size: 14px;
  font-weight: 600;
}

.knowledge-home .topic-card-copy small {
  margin-top: 4px;
  color: var(--fg3);
  font-size: 11px;
  line-height: 1.5;
}

.knowledge-home .topic-card-row b {
  font-size: 17px;
  font-weight: 600;
}

.knowledge-home .topic-card-arrow {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border: 1px solid var(--line2);
  border-radius: 50%;
  color: var(--fg2);
  transition: 0.3s var(--ease-out);
}

.knowledge-home .topic-card-row:hover .topic-card-arrow {
  transform: translateX(2px);
  border-color: var(--fg2);
  color: var(--fg);
}

.knowledge-home .topic-card-upcoming {
  padding: 18px 20px 20px;
  border-top: 1px solid var(--line);
}

.knowledge-home .topic-card-upcoming p {
  margin: 0 0 12px;
  color: var(--fg2);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
}

.knowledge-home .topic-card-upcoming div {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.knowledge-home .topic-card-upcoming span {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--fg2);
  font-size: 10px;
  line-height: 1;
}

.knowledge-home .knowledge-ask {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  overflow: hidden;
  margin-top: 56px;
  padding: 36px 42px;
  background:
    radial-gradient(
      90% 150% at 100% 0%,
      color-mix(in srgb, var(--fg) 8%, transparent),
      transparent 58%
    ),
    var(--card);
}

.knowledge-home .knowledge-ask::after {
  content: "";
  position: absolute;
  top: 0;
  right: 12%;
  left: 12%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--fg3), transparent);
  opacity: 0.5;
}

.knowledge-home .knowledge-ask > * {
  position: relative;
}

.knowledge-home .knowledge-ask h3 {
  margin: 0;
  font-size: 20px;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

.knowledge-home .knowledge-ask p {
  max-width: 560px;
  margin: 9px 0 0;
  color: var(--fg2);
  font-size: 13px;
  line-height: 1.7;
}

.knowledge-home .knowledge-ask-actions {
  display: flex;
  flex: none;
  flex-wrap: wrap;
  gap: 10px;
}

.knowledge-home .knowledge-ask-actions .btn {
  min-width: 132px;
  justify-content: center;
}

.knowledge-home .knowledge-ask-secondary {
  border-color: var(--line2);
  background: transparent;
  color: var(--fg);
}

.knowledge-home .knowledge-ask-secondary:hover {
  border-color: var(--fg2);
  background: color-mix(in srgb, var(--fg) 4%, transparent);
}

.knowledge-home .knowledge-empty {
  padding: 84px 24px;
  text-align: center;
}

.knowledge-home .knowledge-empty p {
  margin: 8px 0 0;
  color: var(--fg2);
  font-size: 14px;
}

html:not(.dark) .knowledge-home .knowledge-search-bar {
  border-color: rgba(14, 22, 32, 0.12);
  background: rgba(255, 255, 255, 0.78);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    0 24px 70px -38px rgba(90, 120, 145, 0.38);
}

html:not(.dark) .knowledge-home .knowledge-search-bar input {
  color: #0b0f14;
}

html:not(.dark) .knowledge-home .knowledge-search-bar input::placeholder {
  color: #6b7284;
}

@media (max-width: 720px) {
  .knowledge-home .knowledge-grid {
    grid-template-columns: 1fr;
  }

  .knowledge-home .knowledge-side {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  /* 英文标题两个词在窄屏放不下一行：允许换行并收字号，动画不变 */
  .knowledge-home .knowledge-title.is-en {
    white-space: normal;
    font-size: clamp(2.6rem, 11.5vw, 3rem);
  }

  .knowledge-home .knowledge-hero {
    min-height: 570px;
    padding-top: 118px;
  }

  .knowledge-home .knowledge-search-bar {
    border-radius: 18px;
    padding-left: 15px;
  }

  .knowledge-home .knowledge-search-bar .btn {
    min-width: 74px;
    padding-inline: 14px;
  }

  .knowledge-home .knowledge-section-head {
    align-items: start;
    flex-direction: column;
    margin-bottom: 32px;
  }

  .knowledge-home .article-row {
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 12px;
    min-height: 0;
    padding: 24px 18px;
  }

  .knowledge-home .article-arrow {
    display: none;
  }

  .knowledge-home .knowledge-ask {
    align-items: flex-start;
    flex-direction: column;
    margin-top: 36px;
    padding: 28px 24px;
  }

  .knowledge-home .knowledge-ask-actions,
  .knowledge-home .knowledge-ask-actions .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .knowledge-home.knowledge-motion-ready [data-knowledge-reveal] {
    opacity: 1;
    translate: none;
    transition: none;
  }

  .knowledge-home .article-list::after,
  .knowledge-home .article-verified i,
  .knowledge-home .knowledge-title span {
    animation: none;
  }

  .knowledge-home .knowledge-title span {
    opacity: 1;
    filter: none;
    transform: none;
  }
}