.page-faq {
  --faq-rule: rgba(216, 207, 192, .85);
  --faq-deep-line: rgba(127, 163, 150, .24);
  --faq-ink: rgba(10, 20, 24, .82);
  --faq-ink-soft: rgba(14, 43, 36, .6);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 52px;
  background: linear-gradient(142deg, #0E2B24 0%, #0A1418 58%, #0A1418 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, var(--faq-deep-line) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(90deg, var(--faq-deep-line) 0 1px, transparent 1px 44px);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  top: -32%;
  width: 52%;
  height: 150%;
  background: linear-gradient(158deg, rgba(201, 162, 39, .18), rgba(184, 115, 51, .06) 46%, transparent 70%);
  transform: skewX(-9deg);
  pointer-events: none;
}

.page-faq .faq-hero__in {
  position: relative;
  z-index: 1;
}

.page-faq .faq-crumb,
.page-faq .faq-crumb a,
.page-faq .faq-crumb .crumb__sep {
  color: rgba(127, 163, 150, .92);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-decoration: none;
}

.page-faq .faq-crumb a:hover {
  color: var(--gold-hi);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 30px;
  margin-top: 24px;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  max-width: 21ch;
  color: var(--ivory);
  font-family: var(--f-display);
  font-weight: 200;
  font-size: clamp(30px, 7vw, 60px);
  line-height: 1.14;
  letter-spacing: -.02em;
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 46ch;
  color: rgba(255, 248, 236, .8);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.9;
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__chips a {
  display: inline-block;
  padding: 7px 15px;
  border: 1px solid rgba(201, 162, 39, .45);
  border-radius: 999px;
  color: var(--gold-hi);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-decoration: none;
  transition: background-color .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}

.page-faq .faq-hero__chips a:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--night);
}

.page-faq .faq-hero__media {
  position: relative;
}

.page-faq .faq-hero__frame {
  border: 1px solid rgba(201, 162, 39, .42);
  box-shadow: 6px 6px 0 rgba(201, 162, 39, .16);
}

.page-faq .faq-hero__frame img {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-hero__cap {
  margin: 14px 0 0;
  color: var(--mist);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .08em;
  line-height: 1.75;
}

.page-faq .faq-hero__cap .idx {
  color: var(--gold);
}

/* ---------- 分类索引带 ---------- */
.page-faq .faq-index {
  padding: 38px 0 46px;
  background: var(--deep);
  border-top: 1px solid rgba(201, 162, 39, .3);
  border-bottom: 1px solid rgba(201, 162, 39, .3);
}

.page-faq .faq-index__head {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-faq .faq-index__title {
  margin: 0;
  color: var(--ivory);
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(21px, 3.4vw, 30px);
  letter-spacing: -.01em;
}

.page-faq .faq-index__note {
  margin: 0;
  color: var(--mist);
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  line-height: 1.7;
}

.page-faq .faq-index__list {
  display: grid;
  gap: 1px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  background: rgba(201, 162, 39, .24);
  border: 1px solid rgba(201, 162, 39, .24);
}

.page-faq .faq-index__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  padding: 15px 16px;
  background: var(--deep);
  text-decoration: none;
  transition: background-color .25s var(--ease);
}

.page-faq .faq-index__item .idx {
  grid-row: 1 / span 2;
  color: var(--copper);
  font-size: 11.5px;
  letter-spacing: .18em;
  padding-top: 3px;
  transition: color .25s var(--ease);
}

.page-faq .faq-index__name {
  color: var(--ivory);
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 17px;
  line-height: 1.4;
}

.page-faq .faq-index__hint {
  color: var(--mist);
  font-family: var(--f-body);
  font-size: 13px;
  line-height: 1.65;
  margin-top: 3px;
}

.page-faq .faq-index__item:hover {
  background: rgba(201, 162, 39, .12);
}

.page-faq .faq-index__item:hover .idx {
  color: var(--neon);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  padding: 44px 0 76px;
  background: var(--paper);
  background-image: repeating-linear-gradient(90deg, rgba(216, 207, 192, .5) 0 1px, transparent 1px 96px);
}

.page-faq .faq-layout {
  display: grid;
  gap: 34px;
}

.page-faq .faq-rail {
  display: none;
}

.page-faq .faq-group {
  margin-bottom: 54px;
  scroll-margin-top: 92px;
}

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

.page-faq .faq-group__head {
  padding-bottom: 16px;
  margin-bottom: 4px;
  border-bottom: 2px solid var(--deep);
}

.page-faq .faq-group__num {
  display: block;
  color: var(--copper);
  font-size: 11.5px;
  letter-spacing: .22em;
}

.page-faq .faq-group__title {
  margin: 8px 0 0;
  color: var(--deep);
  font-family: var(--f-display);
  font-weight: 500;
  font-size: clamp(20px, 3.6vw, 27px);
  letter-spacing: -.01em;
}

.page-faq .faq-group__desc {
  margin: 8px 0 0;
  max-width: 52ch;
  color: var(--faq-ink-soft);
  font-family: var(--f-body);
  font-size: 14.5px;
  line-height: 1.8;
}

.page-faq .faq-group__desc a {
  color: var(--copper);
  text-decoration: none;
  border-bottom: 1px solid rgba(184, 115, 51, .5);
}

.page-faq .faq-group__desc a:hover {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

/* 问答条目 */
.page-faq .faq-q {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-q summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 36px 18px 0;
  cursor: pointer;
  list-style: none;
  color: var(--deep);
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 16.5px;
  line-height: 1.62;
  transition: color .2s var(--ease);
}

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

.page-faq .faq-q summary::after {
  content: "";
  position: absolute;
  right: 8px;
  top: 26px;
  width: 7px;
  height: 7px;
  border-right: 1.5px solid var(--copper);
  border-bottom: 1.5px solid var(--copper);
  transform: rotate(-45deg);
  transition: transform .28s var(--ease), border-color .28s var(--ease);
}

.page-faq .faq-q[open] summary::after {
  transform: rotate(45deg);
  border-color: var(--gold);
}

.page-faq .faq-q summary:hover {
  color: #1b3d33;
}

.page-faq .faq-q[open] summary {
  color: #164036;
}

.page-faq .faq-q__no {
  flex: 0 0 auto;
  padding-top: 6px;
  color: var(--copper);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .16em;
}

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

.page-faq .faq-q__body {
  padding: 0 24px 22px 32px;
  border-left: 1px solid rgba(184, 115, 51, .3);
  margin-left: 2px;
  color: var(--faq-ink);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.92;
}

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

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

.page-faq .faq-q__body a {
  color: var(--copper);
  text-decoration: none;
  border-bottom: 1px solid rgba(184, 115, 51, .45);
}

.page-faq .faq-q__body a:hover {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

.page-faq .fig {
  color: var(--deep);
  font-weight: 500;
  border-bottom: 1px solid var(--gold);
  padding-bottom: 1px;
}

/* 章节配图 */
.page-faq .faq-shot {
  margin: 22px 0 24px;
  padding: 0;
}

.page-faq .faq-shot figcaption {
  margin-top: 10px;
  color: rgba(14, 43, 36, .55);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .07em;
  line-height: 1.7;
}

/* 人工通道卡片 */
.page-faq .faq-help {
  display: grid;
  gap: 1px;
  margin-top: 26px;
  background: rgba(184, 115, 51, .35);
  border: 1px solid rgba(184, 115, 51, .35);
}

.page-faq .faq-help__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: rgba(255, 248, 236, .72);
}

.page-faq .faq-help__k {
  color: var(--copper);
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .2em;
}

.page-faq .faq-help__v {
  color: var(--deep);
  font-family: var(--f-mono);
  font-size: 15px;
  letter-spacing: .02em;
  line-height: 1.6;
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-index__head {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
    gap: 24px;
  }

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

  .page-faq .faq-help__item--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 34px 0 72px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 54px;
    align-items: end;
    margin-top: 42px;
  }

  .page-faq .faq-hero__lede {
    font-size: 17px;
  }

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

  .page-faq .faq-body {
    padding: 62px 0 96px;
  }

  .page-faq .faq-q__body {
    padding: 0 40px 24px 44px;
    font-size: 16.5px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 214px minmax(0, 1fr);
    gap: 58px;
    align-items: start;
  }

  .page-faq .faq-rail {
    display: block;
    position: sticky;
    top: calc(var(--head-h) + 26px);
    padding-left: 16px;
    border-left: 1px solid var(--edge);
  }

  .page-faq .faq-rail__kicker {
    display: block;
    margin: 0 0 14px;
  }

  .page-faq .faq-rail__nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-bottom: 22px;
  }

  .page-faq .faq-rail__link {
    display: flex;
    align-items: baseline;
    gap: 9px;
    padding: 9px 10px;
    border-left: 2px solid transparent;
    color: rgba(14, 43, 36, .74);
    font-family: var(--f-body);
    font-size: 15px;
    line-height: 1.5;
    text-decoration: none;
    transition: color .22s var(--ease), border-color .22s var(--ease), background-color .22s var(--ease);
  }

  .page-faq .faq-rail__link .idx {
    color: var(--copper);
    font-size: 10.5px;
    letter-spacing: .16em;
  }

  .page-faq .faq-rail__link:hover {
    color: var(--deep);
    border-left-color: var(--copper);
    background: rgba(201, 162, 39, .12);
  }

  .page-faq .faq-rail__link:hover .idx {
    color: var(--neon);
  }

  .page-faq .faq-rail__top {
    display: inline-block;
    margin-left: 10px;
    color: var(--copper);
    font-family: var(--f-mono);
    font-size: 11px;
    letter-spacing: .16em;
    text-decoration: none;
    border-bottom: 1px dashed rgba(184, 115, 51, .55);
    padding-bottom: 2px;
  }

  .page-faq .faq-rail__top:hover {
    color: var(--neon);
    border-bottom-color: var(--neon);
  }

  .page-faq .faq-help {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-help__item--wide {
    grid-column: span 2;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 72px;
  }

  .page-faq .faq-q summary {
    font-size: 17.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__chips a,
  .page-faq .faq-index__item,
  .page-faq .faq-q summary,
  .page-faq .faq-q summary::after,
  .page-faq .faq-rail__link {
    transition: none;
  }
}