.page-faq {
  --faq-gap: clamp(20px, 3vw, 44px);
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(56px, 9vw, 104px);
}

.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: clamp(18px, 3vw, 30px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--mist);
}

.page-faq .breadcrumb-link {
  color: var(--mist);
  text-decoration: none;
}

.page-faq .breadcrumb-link:hover,
.page-faq .breadcrumb-link:focus-visible {
  color: var(--cyan);
}

.page-faq .kb-hero {
  padding: clamp(20px, 3.5vw, 38px) 0 clamp(34px, 6vw, 64px);
}

.page-faq .kb-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

.page-faq .kb-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5.2vw, 3.4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 14em;
}

.page-faq .kb-hero__lead {
  margin: clamp(14px, 2vw, 20px) 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .kb-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin-top: clamp(22px, 3vw, 32px);
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-faq .kb-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-faq .kb-hero__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 600;
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-faq .kb-hero__label {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-faq .kb-hero__media {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .kb-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .media-caption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .kb-sec-title {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-size: clamp(1.24rem, 2.4vw, 1.62rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.page-faq .kb-path {
  padding-bottom: clamp(36px, 6vw, 64px);
}

.page-faq .kb-path__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .kb-path__step {
  position: relative;
  padding: 16px 18px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .kb-path__step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 2px;
  background: var(--cyan);
  opacity: .55;
}

.page-faq .kb-path__step:hover {
  transform: translateY(-2px);
  border-color: var(--teal);
}

.page-faq .kb-path__n {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--amber);
}

.page-faq .kb-path__step h3 {
  margin: 6px 0 6px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.45;
}

.page-faq .kb-path__step p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .kb-index {
  padding-bottom: clamp(40px, 7vw, 76px);
}

.page-faq .kb-radio {
  display: none;
}

.page-faq .kb-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.6vw, 40px);
  align-items: start;
}

.page-faq .kb-track {
  min-width: 0;
}

.page-faq .kb-track__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-faq .kb-track__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.page-faq .kb-track__list::-webkit-scrollbar {
  height: 4px;
}

.page-faq .kb-track__list::-webkit-scrollbar-thumb {
  background: var(--line);
}

.page-faq .kb-cat {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .kb-cat:hover {
  color: var(--paper);
  border-color: var(--teal);
}

.page-faq #kb-cat-all:checked ~ .kb-track [for="kb-cat-all"],
.page-faq #kb-cat-save:checked ~ .kb-track [for="kb-cat-save"],
.page-faq #kb-cat-nav:checked ~ .kb-track [for="kb-cat-nav"],
.page-faq #kb-cat-rank:checked ~ .kb-track [for="kb-cat-rank"],
.page-faq #kb-cat-watch:checked ~ .kb-track [for="kb-cat-watch"],
.page-faq #kb-cat-ver:checked ~ .kb-track [for="kb-cat-ver"],
.page-faq #kb-cat-help:checked ~ .kb-track [for="kb-cat-help"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-faq #kb-cat-save:checked ~ .kb-qa .qa,
.page-faq #kb-cat-nav:checked ~ .kb-qa .qa,
.page-faq #kb-cat-rank:checked ~ .kb-qa .qa,
.page-faq #kb-cat-watch:checked ~ .kb-qa .qa,
.page-faq #kb-cat-ver:checked ~ .kb-qa .qa,
.page-faq #kb-cat-help:checked ~ .kb-qa .qa {
  display: none;
}

.page-faq #kb-cat-save:checked ~ .kb-qa .qa[data-cat="save"],
.page-faq #kb-cat-nav:checked ~ .kb-qa .qa[data-cat="nav"],
.page-faq #kb-cat-rank:checked ~ .kb-qa .qa[data-cat="rank"],
.page-faq #kb-cat-watch:checked ~ .kb-qa .qa[data-cat="watch"],
.page-faq #kb-cat-ver:checked ~ .kb-qa .qa[data-cat="ver"],
.page-faq #kb-cat-help:checked ~ .kb-qa .qa[data-cat="help"] {
  display: block;
}

.page-faq .kb-qa {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  min-width: 0;
}

.page-faq .qa {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  transition: border-color .2s var(--ease);
}

.page-faq .qa:hover {
  border-color: var(--teal);
  border-left-color: var(--cyan);
}

.page-faq .qa[open] {
  border-left-color: var(--cyan);
}

.page-faq .qa > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  list-style: none;
  cursor: pointer;
}

.page-faq .qa > summary::-webkit-details-marker {
  display: none;
}

.page-faq .qa > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .qa__no {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-faq .qa__q {
  flex: 1 1 auto;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
}

.page-faq .qa > summary::after {
  content: "+";
  flex: none;
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--teal);
  transition: color .18s var(--ease);
}

.page-faq .qa[open] > summary::after {
  content: "−";
  color: var(--cyan);
}

.page-faq .qa__body {
  padding: 0 16px 18px;
}

.page-faq .qa__body .qa__cat {
  display: inline-block;
  margin: 0 0 10px;
  padding: 2px 8px;
  border: 1px solid rgba(255, 179, 71, .38);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-faq .qa__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .qa__body p + p {
  margin-top: 10px;
}

.page-faq .qa__link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(71, 245, 211, .4);
  padding-bottom: 1px;
}

.page-faq .qa__link:hover {
  border-bottom-color: var(--cyan);
}

.page-faq .kb-help__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  padding: clamp(22px, 3.5vw, 40px);
  background: var(--panel);
  border-top: 1px solid var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-faq .kb-help__lead {
  margin: clamp(12px, 1.6vw, 18px) 0 0;
  max-width: 34em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .kb-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(18px, 2.4vw, 26px);
}

.page-faq .kb-help__media {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink);
}

.page-faq .kb-help__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 700px) {
  .page-faq .kb-path__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-faq .kb-help__panel {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-faq .kb-hero__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    align-items: end;
  }
}

@media (min-width: 980px) {
  .page-faq .kb-shell {
    grid-template-columns: 232px minmax(0, 1fr);
  }

  .page-faq .kb-track {
    position: sticky;
    top: 104px;
  }

  .page-faq .kb-track__list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .kb-cat {
    width: 100%;
    justify-content: flex-start;
    padding: 11px 12px 11px 14px;
    border: 0;
    border-left: 2px solid var(--line);
    font-size: 13px;
  }

  .page-faq .kb-cat:hover {
    border-left-color: var(--cyan);
  }
}

@media (min-width: 1024px) {
  .page-faq .kb-path__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}