.page-faq {
  --faq-rail-w: 258px;
  background: var(--yj-night);
  color: var(--yj-ink);
  padding-block: clamp(22px, 4.5vw, 52px) clamp(56px, 10vw, 120px);
}

.page-faq .yj-crumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  align-items: center;
  padding-bottom: clamp(36px, 6vw, 72px);
}

.page-faq .faq-hero__frame {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 44px) clamp(20px, 3.4vw, 44px) clamp(28px, 4vw, 48px);
  border: 1px solid var(--yj-line);
  border-radius: var(--yj-r-lg);
  background:
    radial-gradient(120% 130% at 0% 0%, rgba(57, 242, 180, .13), transparent 56%),
    linear-gradient(180deg, rgba(22, 51, 42, .78), rgba(12, 30, 24, .78));
}

.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--yj-mint), var(--yj-volt) 58%, var(--yj-violet));
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  font-family: var(--yj-font-squeeze);
  font-weight: 800;
  font-size: clamp(29px, 6.2vw, 58px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--yj-bone);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 46ch;
  color: var(--yj-mist);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__jump a {
  text-decoration: none;
}

.page-faq .faq-hero__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--yj-line);
  border-radius: var(--yj-r-lg);
  background: var(--yj-turf-deep);
}

.page-faq .faq-hero__media .yj-media__inner {
  display: block;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 640;
  object-fit: cover;
  filter: saturate(.86) brightness(.94);
}

.page-faq .yj-media__stamp {
  position: absolute;
  left: 16px;
  bottom: 16px;
  padding: 6px 13px;
  border: 1px solid var(--yj-line-mint);
  border-radius: var(--yj-cap);
  background: rgba(12, 30, 24, .8);
  color: var(--yj-mint);
  font-family: var(--yj-font-mono);
  font-size: 12px;
  letter-spacing: .05em;
}

/* ---------- 主体骨架 ---------- */

.page-faq .faq-body {
  display: grid;
  gap: clamp(26px, 4vw, 54px);
  align-items: start;
  min-width: 0;
}

/* ---------- 左侧问题索引 ---------- */

.page-faq .faq-rail {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--yj-line);
  border-radius: var(--yj-r-md);
  background: rgba(22, 51, 42, .52);
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--yj-font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--yj-slate);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  white-space: nowrap;
  padding: 9px 14px;
  border: 1px solid transparent;
  border-radius: var(--yj-cap);
  color: var(--yj-mist);
  text-decoration: none;
  font-size: 15px;
  transition: color .25s var(--yj-ease), background-color .25s var(--yj-ease),
    border-color .25s var(--yj-ease);
}

.page-faq .faq-rail__num {
  font-family: var(--yj-font-mono);
  font-size: 12px;
  color: var(--yj-amber);
  transition: color .25s var(--yj-ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: var(--yj-mint);
  border-color: var(--yj-mint);
  color: var(--yj-night);
}

.page-faq .faq-rail__link:hover .faq-rail__num,
.page-faq .faq-rail__link:focus-visible .faq-rail__num {
  color: var(--yj-night);
}

/* ---------- 问题流 ---------- */

.page-faq .faq-stream {
  display: grid;
  gap: clamp(30px, 5vw, 58px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--yj-head) + 26px);
  min-width: 0;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--yj-line);
}

.page-faq .faq-group__num {
  font-family: var(--yj-font-mono);
  font-size: clamp(19px, 3vw, 28px);
  letter-spacing: .04em;
  color: var(--yj-amber);
}

.page-faq .faq-group__title {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--yj-font-serif);
  font-weight: 600;
  font-size: clamp(19px, 2.6vw, 27px);
  color: var(--yj-bone);
}

/* ---------- 手风琴条目 ---------- */

.page-faq .faq-item {
  border-bottom: 1px solid var(--yj-line);
  transition: background-color .3s var(--yj-ease);
}

.page-faq .faq-item[open] {
  background: radial-gradient(130% 110% at 0% 0%, rgba(57, 242, 180, .09), transparent 62%);
}

.page-faq .faq-item__q {
  position: relative;
  display: block;
  padding: 17px 46px 17px 18px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15.5px, 2vw, 17.5px);
  line-height: 1.6;
  color: var(--yj-bone);
  border-radius: var(--yj-r-sm);
  transition: color .25s var(--yj-ease);
}

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

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

.page-faq .faq-item__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  border-radius: 3px;
  background: var(--yj-line);
  transition: background-color .3s var(--yj-ease), box-shadow .3s var(--yj-ease);
}

.page-faq .faq-item[open] > .faq-item__q::before,
.page-faq .faq-item__q:hover::before {
  background: var(--yj-mint);
  box-shadow: 0 0 16px rgba(57, 242, 180, .5);
}

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--yj-font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--yj-slate);
  transition: color .3s var(--yj-ease);
}

.page-faq .faq-item[open] > .faq-item__q::after {
  content: "−";
  color: var(--yj-mint);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--yj-mint);
  outline-offset: 3px;
}

.page-faq .faq-item__a {
  padding: 2px 46px 22px 18px;
  color: var(--yj-mist);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-answer-in .34s var(--yj-ease) both;
}

.page-faq .faq-item__a p {
  margin: 0 0 12px;
}

.page-faq .faq-item__a p:last-of-type {
  margin-bottom: 10px;
}

.page-faq .faq-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border: 1px solid var(--yj-line-mint);
  border-radius: var(--yj-cap);
  background: rgba(57, 242, 180, .09);
  color: var(--yj-mint);
  text-decoration: none;
  font-size: 14px;
  transition: background-color .25s var(--yj-ease), color .25s var(--yj-ease);
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  background: var(--yj-mint);
  color: var(--yj-night);
}

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 客服联系区块 ---------- */

.page-faq .faq-help {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
  margin-top: clamp(44px, 7vw, 88px);
  padding: clamp(24px, 4vw, 46px);
  border: 1px solid var(--yj-line-mint);
  border-radius: var(--yj-r-lg);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(57, 242, 180, .15), transparent 58%),
    rgba(22, 51, 42, .72);
  scroll-margin-top: calc(var(--yj-head) + 26px);
}

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

.page-faq .faq-help__title {
  margin: 14px 0 0;
  font-family: var(--yj-font-serif);
  font-weight: 600;
  font-size: clamp(21px, 3.4vw, 33px);
  line-height: 1.28;
  color: var(--yj-bone);
}

.page-faq .faq-help__text {
  margin: 16px 0 0;
  max-width: 52ch;
  color: var(--yj-mist);
  line-height: 1.8;
}

.page-faq .faq-help__list {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
}

.page-faq .faq-help__row {
  display: grid;
  gap: 4px;
  padding: 12px 16px;
  border: 1px solid var(--yj-line);
  border-radius: var(--yj-r-sm);
  background: rgba(12, 30, 24, .5);
}

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

.page-faq .faq-help__row dd {
  margin: 0;
  font-family: var(--yj-font-mono);
  font-size: clamp(14px, 2vw, 16px);
  color: var(--yj-bone);
  word-break: break-word;
}

.page-faq .faq-help__note {
  margin: 18px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--yj-slate);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-help__actions .yj-btn {
  text-decoration: none;
}

.page-faq .faq-help__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--yj-line);
  border-radius: var(--yj-r-md);
  background: var(--yj-turf-deep);
}

.page-faq .faq-help__media .yj-media__inner {
  display: block;
}

.page-faq .faq-help__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 640;
  object-fit: cover;
  filter: saturate(.85) brightness(.94);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-item__a {
    padding-right: 64px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  }

  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--yj-head) + 22px);
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }

  .page-faq .faq-item__q,
  .page-faq .faq-item__q::before,
  .page-faq .faq-item__q::after,
  .page-faq .faq-rail__link,
  .page-faq .faq-link {
    transition: none;
  }
}