.page-faq {
  --faq-line: rgba(141, 150, 178, .22);
  --faq-rail-w: 274px;
  --faq-answer-text: rgba(232, 236, 245, .8);
  display: block;
}

.page-faq .crumbs {
  padding-top: 26px;
}

.page-faq .faq-hero {
  padding-top: 14px;
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  letter-spacing: -.035em;
  word-break: break-word;
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 44ch;
  color: var(--faq-answer-text);
}

.page-faq .faq-hero__side {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 0 2px 12px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero__side-text {
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .12em;
}

.page-faq .faq-hero__figure {
  margin: 0;
}

.page-faq .faq-hero__figure .figure__media {
  aspect-ratio: 21 / 9;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--faq-line);
  background: linear-gradient(160deg, rgba(20, 27, 51, .95), rgba(11, 16, 32, .95));
}

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

/* ---------- 主体双栏 ---------- */

.page-faq .faq-main {
  padding-top: 10px;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
  align-items: start;
}

.page-faq .faq-rail {
  min-width: 0;
}

.page-faq .faq-rail__label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mute);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__item {
  flex: 0 0 auto;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 15px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-pill);
  background: rgba(20, 27, 51, .6);
  color: var(--paper);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-rail__link:hover {
  border-color: var(--violet);
  background: rgba(122, 92, 255, .14);
  transform: translateY(-2px);
}

.page-faq .faq-rail__link:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

.page-faq .faq-rail__num {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .faq-rail__foot {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--mute);
}

/* ---------- 问答组 ---------- */

.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-group + .faq-group {
  margin-top: 46px;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--faq-line);
  margin-bottom: 20px;
}

.page-faq .faq-group__index {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(19px, 2.3vw, 25px);
  letter-spacing: -.015em;
  color: var(--paper);
}

/* ---------- 单条问答 ---------- */

.page-faq .qa {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
  background: rgba(20, 27, 51, .5);
  margin-bottom: 14px;
  scroll-margin-top: 88px;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .qa[open] {
  background: rgba(20, 27, 51, .86);
  border-color: rgba(47, 224, 200, .32);
}

.page-faq .qa:hover {
  border-color: rgba(122, 92, 255, .55);
}

.page-faq .qa:target {
  border-color: var(--violet);
  box-shadow: 0 0 0 1px rgba(122, 92, 255, .55), 0 22px 48px -28px rgba(122, 92, 255, .9);
}

.page-faq .qa__summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 17px 18px;
}

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

.page-faq .qa__summary:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: -2px;
  border-radius: var(--radius-md);
}

.page-faq .qa__num {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-faq .qa__q {
  font-weight: 700;
  font-size: 16px;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .qa__icon {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--faq-line);
  border-radius: 50%;
  flex: none;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .qa__icon::before,
.page-faq .qa__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--cyan);
  transform: translate(-50%, -50%);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .qa__icon::before {
  width: 10px;
  height: 1.5px;
}

.page-faq .qa__icon::after {
  width: 1.5px;
  height: 10px;
}

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

.page-faq .qa[open] .qa__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .qa__answer {
  padding: 0 18px 20px;
}

.page-faq .qa__answer p {
  margin: 0 0 10px;
  max-width: 46ch;
  padding-left: 14px;
  border-left: 2px solid rgba(47, 224, 200, .45);
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-answer-text);
}

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

.page-faq .qa__steps {
  list-style: none;
  counter-reset: qa-step;
  margin: 0 0 12px;
  padding: 0 0 0 14px;
  border-left: 2px solid rgba(47, 224, 200, .45);
}

.page-faq .qa__steps li {
  position: relative;
  counter-increment: qa-step;
  margin-bottom: 9px;
  padding-left: 32px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-answer-text);
}

.page-faq .qa__steps li::before {
  content: counter(qa-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--violet);
}

.page-faq .qa__link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 224, 200, .42);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-faq .qa__link:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

/* ---------- 内嵌配图 ---------- */

.page-faq .faq-inline-figure {
  margin: 18px 0 0;
  max-width: 460px;
}

.page-faq .faq-inline-figure .figure__media {
  aspect-ratio: 20 / 13;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--faq-line);
  background: linear-gradient(150deg, rgba(20, 27, 51, .95), rgba(11, 16, 32, .95));
}

.page-faq .faq-inline-figure .figure__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .faq-inline-figure .figure__caption {
  margin-top: 8px;
  font-size: 13px;
  color: var(--mute);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-faq .qa__summary {
    padding: 19px 22px;
    gap: 16px;
  }

  .page-faq .qa__answer {
    padding: 0 22px 22px;
  }

  .page-faq .qa__answer p {
    padding-left: 16px;
  }

  .page-faq .qa__steps {
    padding-left: 16px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1fr) 176px;
    grid-template-areas:
      "head side"
      "figure figure";
    gap: 26px 30px;
  }

  .page-faq .faq-hero__head {
    grid-area: head;
  }

  .page-faq .faq-hero__side {
    grid-area: side;
    flex-direction: column;
    align-items: flex-end;
    text-align: right;
    justify-content: flex-start;
    padding-bottom: 0;
    border-bottom: 0;
    border-right: 1px solid var(--faq-line);
    padding-right: 16px;
  }

  .page-faq .faq-hero__figure {
    grid-area: figure;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 54px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 34px;
  }

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

  .page-faq .faq-rail__link {
    border-radius: var(--radius-sm);
    white-space: normal;
    padding: 11px 15px;
  }

  .page-faq .faq-rail__link:hover {
    transform: translateX(4px);
  }

  .page-faq .faq-rail__num {
    flex: none;
  }
}