.page-faq {
  --faq-reading: 64ch;
}

.page-faq .faq-kicker {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-mute);
}

.page-faq .faq-dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--c-lime);
}

.page-faq .faq-dot[data-cat="schedule"],
.page-faq .faq-dot[data-cat="contact"] {
  background: var(--c-lime-deep);
}

.page-faq .faq-dot[data-cat="subscribe"],
.page-faq .faq-dot[data-cat="feedback"] {
  background: var(--c-amber);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--c-line);
  background: var(--c-bg);
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  opacity: .3;
  pointer-events: none;
}

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

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(7, 26, 20, .55) 0%, rgba(7, 26, 20, .93) 68%, var(--c-bg) 100%);
  pointer-events: none;
}

.page-faq .faq-hero .container {
  position: relative;
  z-index: 1;
  padding-top: clamp(28px, 6vw, 68px);
  padding-bottom: clamp(28px, 5vw, 56px);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero h1 {
  max-width: 20ch;
  margin: 0 0 16px;
}

.page-faq .faq-hero__lead {
  max-width: var(--faq-reading);
  margin: 0;
  color: var(--c-mute);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-faq .faq-fact {
  margin: 0;
  padding: 12px 14px;
  background: var(--c-panel);
}

.page-faq .faq-fact dt {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-mute);
}

.page-faq .faq-fact dd {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 8px 0 0;
  color: var(--c-paper);
}

.page-faq .faq-fact dd .num {
  font-size: 26px;
  line-height: 1;
}

.page-faq .faq-fact dd span:last-child {
  font-size: 12px;
  color: var(--c-mute);
}

/* ---------- 主体骨架 ---------- */

.page-faq .faq-shell {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  padding-top: clamp(28px, 5vw, 56px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .faq-index {
  padding: 16px 18px;
  border: 1px solid var(--c-line);
  background: var(--c-panel);
}

.page-faq .faq-index__label {
  margin: 0 0 12px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-mute);
}

.page-faq .faq-index__list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 8px 9px 6px;
  border-left: 2px solid transparent;
  color: var(--c-paper);
  font-size: 14px;
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--c-lime);
  border-left-color: var(--c-lime);
  background: rgba(201, 255, 63, .07);
}

.page-faq .faq-index__num {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--c-mute);
}

.page-faq .faq-index__name {
  flex: 1 1 auto;
}

.page-faq .faq-index__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--c-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-mute);
}

.page-faq .faq-index__note a {
  color: var(--c-lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 255, 63, .4);
}

.page-faq .faq-flow {
  display: grid;
  gap: clamp(36px, 6vw, 64px);
  min-width: 0;
}

.page-faq .faq-block {
  scroll-margin-top: calc(var(--bar-h) + 16px);
  min-width: 0;
}

.page-faq .faq-block__head {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-block__head h2 {
  margin: 0;
}

/* ---------- 问答条目 ---------- */

.page-faq .qa {
  border-bottom: 1px solid var(--c-line);
  transition: background-color .24s var(--ease);
}

.page-faq .qa[open] {
  background: linear-gradient(90deg, rgba(201, 255, 63, .06) 0%, rgba(201, 255, 63, 0) 62%);
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 4px 16px 0;
  list-style: none;
  cursor: pointer;
  color: var(--c-paper);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--c-lime);
  outline-offset: 3px;
}

.page-faq .qa__num {
  flex: 0 0 auto;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--c-amber);
}

.page-faq .qa__text {
  flex: 1 1 auto;
}

.page-faq .qa__mark {
  position: relative;
  flex: 0 0 auto;
  align-self: center;
  width: 14px;
  height: 14px;
  margin-left: 4px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--c-lime);
  transition: transform .26s var(--ease), opacity .2s var(--ease);
}

.page-faq .qa__mark::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 2px;
}

.page-faq .qa__mark::after {
  top: 0;
  left: 6px;
  width: 2px;
  height: 14px;
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 4px 20px 32px;
  max-width: var(--faq-reading);
  color: var(--c-mute);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
}

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

.page-faq .qa__a a {
  color: var(--c-lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 255, 63, .42);
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  color: var(--c-lime-deep);
}

/* ---------- 插图 ---------- */

.page-faq .faq-media {
  margin: 24px 0 0;
}

.page-faq .faq-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--c-line);
  background: var(--c-panel);
}

.page-faq .faq-media .media__caption {
  margin-top: 10px;
}

/* ---------- 客服区块 ---------- */

.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 20px 0 24px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-faq .faq-contact-cell {
  padding: 14px 16px;
  background: var(--c-panel);
}

.page-faq .faq-contact-cell__label {
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-mute);
}

.page-faq .faq-contact-cell__value {
  margin: 0;
  color: var(--c-paper);
  font-family: var(--f-mono);
  font-size: 15px;
  word-break: break-word;
}

.page-faq .faq-contact-cell__value a {
  color: var(--c-paper);
  text-decoration: none;
  border-bottom: 1px solid var(--c-lime);
}

.page-faq .faq-contact-cell__value a:hover,
.page-faq .faq-contact-cell__value a:focus-visible {
  color: var(--c-lime);
}

/* ---------- 断点 ---------- */

@media (min-width: 600px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-faq .faq-fact dd .num {
    font-size: 30px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-shell {
    grid-template-columns: minmax(196px, 236px) minmax(0, 1fr);
    gap: clamp(32px, 4.5vw, 72px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar-h-desk) + 20px);
    max-height: calc(100vh - var(--bar-h-desk) - 40px);
    overflow-y: auto;
  }

  .page-faq .faq-block {
    scroll-margin-top: calc(var(--bar-h-desk) + 24px);
  }

  .page-faq .qa__q {
    font-size: 17px;
    padding-right: 8px;
  }

  .page-faq .qa__a {
    padding-left: 34px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero h1 {
    max-width: 24ch;
  }

  .page-faq .faq-media {
    max-width: 520px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .faq-index__list a {
    transition: none;
  }
}