.page-faq {
  --kf-basic: var(--cx-magenta);
  --kf-judge: var(--cx-cyan);
  --kf-error: var(--cx-gold);
  --kf-hair: rgba(233, 238, 247, 0.1);
  overflow-x: hidden;
}

.page-faq .kf-mono {
  font-family: var(--cx-mono);
  font-variant-numeric: tabular-nums;
}

.page-faq .kf-num {
  font-family: var(--cx-mono);
  font-variant-numeric: tabular-nums;
  font-size: 2rem;
  line-height: 1;
  color: var(--cx-gold);
  letter-spacing: -0.02em;
}

.page-faq .kf-lede {
  max-width: 38em;
  color: var(--cx-ink-2);
}

/* ---------- hero ---------- */

.page-faq .kf-hero {
  position: relative;
  padding: 28px 0 48px;
  border-bottom: 1px solid var(--kf-hair);
}

.page-faq .kf-hero__art {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.page-faq .kf-hero__art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-faq .kf-hero__art::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(80% 60% at 12% 0%, rgba(255, 45, 143, 0.22), transparent 62%),
    radial-gradient(70% 60% at 92% 18%, rgba(53, 230, 224, 0.16), transparent 66%),
    linear-gradient(180deg, rgba(5, 9, 18, 0.4) 0%, rgba(5, 9, 18, 0.86) 62%, var(--cx-void) 100%);
}

.page-faq .kf-hero__inner {
  position: relative;
}

.page-faq .kf-hero__crumb {
  margin-bottom: 28px;
}

.page-faq .kf-hero__title {
  margin: 14px 0 18px;
}

.page-faq .kf-hero__lede {
  margin: 0 0 34px;
}

.page-faq .kf-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 40px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .kf-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 108px;
}

.page-faq .kf-fact-label {
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--cx-dim);
}

/* ---------- filter bar ---------- */

.page-faq .kf-bar {
  position: sticky;
  top: var(--cx-head-h);
  z-index: 6;
  margin-top: -1px;
  background: rgba(5, 9, 18, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--kf-hair);
}

.page-faq .kf-bar__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 12px;
  padding-bottom: 12px;
}

.page-faq .kf-bar__label {
  flex: 0 0 auto;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--cx-dim);
}

.page-faq .kf-bar__filters {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: none;
}

.page-faq .kf-bar__filters::-webkit-scrollbar {
  display: none;
}

.page-faq .kf-pill {
  flex: 0 0 auto;
  white-space: nowrap;
}

/* ---------- three lanes ---------- */

.page-faq .kf-lanes {
  padding-top: 56px;
  padding-bottom: 8px;
}

.page-faq .kf-lanes__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin: 28px 0 0;
}

.page-faq .kf-lane {
  position: relative;
  padding: 24px 22px 20px;
  border-radius: var(--cx-r-lg);
  background: var(--cx-panel);
  border: 1px solid var(--kf-hair);
}

.page-faq .kf-lane::before {
  content: "";
  position: absolute;
  top: 0;
  left: 22px;
  right: 22px;
  height: 2px;
  border-radius: 2px;
}

.page-faq .kf-lane--basic::before {
  background: linear-gradient(90deg, var(--kf-basic), transparent);
}

.page-faq .kf-lane--judge::before {
  background: linear-gradient(90deg, var(--kf-judge), transparent);
}

.page-faq .kf-lane--error::before {
  background: linear-gradient(90deg, var(--kf-error), transparent);
}

.page-faq .kf-lane__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.page-faq .kf-lane--basic .kf-lane__count {
  color: var(--kf-basic);
}

.page-faq .kf-lane--judge .kf-lane__count {
  color: var(--kf-judge);
}

.page-faq .kf-lane--error .kf-lane__count {
  color: var(--kf-error);
}

.page-faq .kf-lane__count {
  font-family: var(--cx-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.page-faq .kf-lane__desc {
  margin: 0 0 16px;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--cx-ink-2);
}

.page-faq .kf-lane__list {
  margin: 0;
  padding: 16px 0 0;
  list-style: none;
  border-top: 1px dashed var(--kf-hair);
}

.page-faq .kf-lane__list li {
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--cx-dim);
  padding: 3px 0;
}

.page-faq .kf-chart {
  margin: 34px 0 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .kf-chart img {
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--cx-r-lg);
  object-fit: cover;
  display: block;
}

.page-faq .kf-chart__cap {
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--cx-dim);
}

/* ---------- glossary ---------- */

.page-faq .kf-terms {
  padding-top: 64px;
  padding-bottom: 8px;
}

.page-faq .kf-terms__head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 26px;
}

.page-faq .kf-terms__hint {
  margin: 0;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--cx-dim);
}

.page-faq .kf-terms__count {
  color: var(--cx-gold);
}

.page-faq .kf-term-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .kf-term {
  border-radius: var(--cx-r-md);
  background: var(--cx-panel);
  border: 1px solid var(--kf-hair);
  transition: border-color 0.3s var(--cx-ease), background 0.3s var(--cx-ease);
}

.page-faq .kf-term:hover {
  border-color: rgba(255, 45, 143, 0.34);
}

.page-faq .kf-term[open] {
  background: var(--cx-raise);
  border-color: rgba(255, 45, 143, 0.4);
}

.page-faq .kf-term[hidden] {
  display: none;
}

.page-faq .kf-term__sum {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-faq .kf-term__sum::-webkit-details-marker {
  display: none;
}

.page-faq .kf-term__code {
  flex: 0 0 auto;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--cx-dim);
}

.page-faq .kf-term__name {
  flex: 1 1 auto;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--cx-ink);
  letter-spacing: 0.01em;
}

.page-faq .kf-term__chev {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-right: 1.5px solid var(--cx-dim);
  border-bottom: 1.5px solid var(--cx-dim);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 0.3s var(--cx-ease), border-color 0.3s var(--cx-ease);
}

.page-faq .kf-term[open] .kf-term__chev {
  transform: rotate(-135deg) translate(-2px, -2px);
  border-color: var(--cx-magenta);
}

.page-faq .kf-term__body {
  padding: 0 18px 18px;
  border-top: 1px solid var(--kf-hair);
  margin-top: 0;
  padding-top: 14px;
}

.page-faq .kf-term__body p {
  margin: 0 0 10px;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--cx-ink-2);
}

.page-faq .kf-term__body p:last-child {
  margin-bottom: 0;
}

.page-faq .kf-term__use {
  padding-left: 12px;
  border-left: 2px solid rgba(53, 230, 224, 0.5);
  font-size: 0.875rem !important;
  color: var(--cx-dim) !important;
}

.page-faq .kf-term[open] .kf-term__body {
  animation: kf-reveal 0.34s var(--cx-ease) both;
}

@keyframes kf-reveal {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Q&A ---------- */

.page-faq .kf-qa {
  padding-top: 64px;
  padding-bottom: 8px;
}

.page-faq .kf-qa__list {
  margin: 26px 0 0;
  display: grid;
  gap: 2px;
  border-radius: var(--cx-r-lg);
  overflow: hidden;
}

.page-faq .kf-qa__item {
  padding: 22px 20px;
  background: var(--cx-panel);
  border-left: 2px solid transparent;
  transition: border-color 0.3s var(--cx-ease), background 0.3s var(--cx-ease);
}

.page-faq .kf-qa__item:nth-child(odd) {
  background: var(--cx-raise);
}

.page-faq .kf-qa__item:hover {
  border-left-color: var(--cx-cyan);
}

.page-faq .kf-qa__item dt {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--cx-ink);
  line-height: 1.6;
  margin-bottom: 10px;
}

.page-faq .kf-qa__item dd {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--cx-ink-2);
  max-width: 38em;
}

.page-faq .kf-qa__item dd a {
  color: var(--cx-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 224, 0.4);
}

.page-faq .kf-qa__item dd a:hover {
  border-bottom-color: var(--cx-cyan);
}

/* ---------- paths ---------- */

.page-faq .kf-paths {
  padding-top: 64px;
  padding-bottom: 8px;
}

.page-faq .kf-paths__intro {
  margin-bottom: 26px;
}

.page-faq .kf-paths__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-faq .kf-path {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 22px;
  border-radius: var(--cx-r-lg);
}

.page-faq .kf-path__tag {
  margin: 0;
  font-family: var(--cx-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cx-cyan);
}

.page-faq .kf-path p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--cx-ink-2);
}

.page-faq .kf-path .cx-btn {
  align-self: flex-start;
  margin-top: auto;
}

/* ---------- feedback ---------- */

.page-faq .kf-feedback {
  padding-top: 64px;
  padding-bottom: 88px;
}

.page-faq .kf-feedback__box {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding: 30px 24px;
  border-radius: var(--cx-r-lg);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(124, 77, 255, 0.2), transparent 60%),
    var(--cx-raise);
}

.page-faq .kf-feedback__main p {
  margin: 12px 0 22px;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--cx-ink-2);
  max-width: 40em;
}

.page-faq .kf-feedback__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .kf-feedback__meta {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  align-content: start;
  border-top: 1px solid var(--kf-hair);
  padding-top: 22px;
}

.page-faq .kf-feedback__meta li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.875rem;
  color: var(--cx-ink-2);
}

.page-faq .kf-meta-key {
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--cx-dim);
}

.page-faq .kf-feedback__meta .cx-foot__mono {
  color: var(--cx-ink);
}

/* ---------- tablet ---------- */

@media (min-width: 700px) {
  .page-faq .kf-hero {
    padding: 40px 0 60px;
  }

  .page-faq .kf-num {
    font-size: 2.5rem;
  }

  .page-faq .kf-term-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .kf-paths__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .kf-lanes__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .kf-chart {
    flex-direction: row;
    align-items: center;
    gap: 28px;
  }

  .page-faq .kf-chart img {
    flex: 0 0 54%;
    max-width: 54%;
  }

  .page-faq .kf-chart__cap {
    flex: 1 1 auto;
  }

  .page-faq .kf-qa__item {
    padding: 26px 28px;
  }

  .page-faq .kf-feedback__box {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 34px;
    padding: 38px 34px;
  }

  .page-faq .kf-feedback__meta {
    border-top: 0;
    border-left: 1px solid var(--kf-hair);
    padding-top: 0;
    padding-left: 26px;
  }
}

/* ---------- desktop ---------- */

@media (min-width: 1000px) {
  .page-faq .kf-bar {
    top: 0;
  }

  .page-faq .kf-hero {
    padding: 56px 0 76px;
  }

  .page-faq .kf-term-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .kf-paths__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .kf-terms__head {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .kf-term,
  .page-faq .kf-term__chev,
  .page-faq .kf-qa__item {
    transition: none;
  }

  .page-faq .kf-term[open] .kf-term__body {
    animation: none;
  }
}