.page-faq {
  --faq-hair: 1px solid var(--stone-edge);
  --faq-glow-cyan: 0 0 22px rgba(79, 227, 210, .38);
  --faq-glow-gold: 0 0 18px rgba(201, 162, 39, .42);
  --faq-tab-gradient: linear-gradient(135deg, rgba(31, 92, 74, .30) 0%, rgba(201, 162, 39, .12) 55%, rgba(226, 85, 140, .18) 100%);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(44px, 8vw, 96px)) 0 clamp(36px, 5vw, 64px);
  background: var(--ink-deep);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(45deg, rgba(44, 58, 53, .55) 0 1px, transparent 1px 52px),
    radial-gradient(120% 90% at 8% 0%, rgba(79, 227, 210, .10), transparent 62%),
    radial-gradient(90% 80% at 100% 100%, rgba(226, 85, 140, .10), transparent 60%);
}

.page-faq .faq-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  max-width: 18em;
}

.page-faq .faq-hero__lede {
  margin-top: 20px;
  max-width: 40em;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__aside {
  border: var(--line-thick);
  box-shadow: var(--shadow-hard);
  background: var(--moss-panel);
  padding: 20px 18px 8px;
}

.page-faq .faq-hero__aside-title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--lichen-muted);
}

.page-faq .faq-hero__aside-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-hero__aside-list li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 11px 0;
  border-top: var(--faq-hair);
}

.page-faq .faq-hero__aside-list li:first-child {
  border-top: none;
}

.page-faq .faq-hero__k {
  flex: none;
  min-width: 3.6em;
  font-size: 20px;
  color: var(--dark-gold);
  letter-spacing: .02em;
}

.page-faq .faq-hero__v {
  font-size: 14px;
  line-height: 1.6;
  color: var(--lichen-muted);
}

/* ---------- 分类跳转 ---------- */
.page-faq .faq-jump {
  background: var(--ink-deep);
  border-top: var(--faq-hair);
  border-bottom: 1px solid var(--dark-gold);
}

.page-faq .faq-jump__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 16px 0;
  list-style: none;
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  padding: 8px 15px;
  border: 1px solid var(--stone-edge);
  background: var(--faq-tab-gradient);
  color: var(--ivory-text);
  font-size: 14px;
  letter-spacing: .05em;
  text-decoration: none;
  transition: transform .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
}

.page-faq .faq-jump__link:hover {
  transform: translateY(-2px);
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
}

.page-faq .faq-jump__link:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 2px;
}

/* ---------- 区块与标题 ---------- */
.page-faq .faq-block {
  padding: clamp(46px, 7vw, 92px) 0;
}

.page-faq .faq-block--moss {
  background: var(--moss-panel);
  border-top: var(--faq-hair);
  border-bottom: var(--faq-hair);
}

.page-faq .faq-head {
  display: block;
  max-width: 62em;
}

.page-faq .faq-head .display--sm {
  margin: 12px 0 0;
}

.page-faq .faq-head .prose {
  margin-top: 16px;
  max-width: 38em;
}

.page-faq .faq-note {
  margin: 22px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--dark-gold);
  color: var(--lichen-muted);
  font-size: 15px;
  line-height: 1.75;
  max-width: 52em;
}

/* ---------- 版本对照表 ---------- */
.page-faq .cmp {
  margin-top: clamp(26px, 4vw, 42px);
  border: var(--line-thick);
  box-shadow: var(--shadow-hard);
  background: var(--moss-panel);
}

.page-faq .faq-block--moss .cmp {
  background: var(--ink-deep);
}

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

.page-faq .cmp__row {
  border-top: var(--faq-hair);
}

.page-faq .cmp__row:first-of-type {
  border-top: none;
}

.page-faq .cmp__cell {
  display: block;
  padding: 13px 16px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ivory-text);
}

.page-faq .cmp__cell--item {
  color: var(--dark-gold);
  letter-spacing: .05em;
  background: rgba(44, 58, 53, .35);
}

.page-faq .cmp__cell--classic,
.page-faq .cmp__cell--season {
  border-top: var(--faq-hair);
}

.page-faq .cmp__cell--classic::before,
.page-faq .cmp__cell--season::before {
  content: attr(data-label);
  display: block;
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--lichen-muted);
}

.page-faq .cmp__cell--season::before {
  color: var(--neon-cyan);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
  margin-top: clamp(24px, 3.6vw, 40px);
}

.page-faq .faq-list--tight {
  margin-top: 22px;
}

.page-faq .faq-item {
  position: relative;
  border: var(--faq-hair);
  background: var(--ink-deep);
  transition: border-color .24s var(--ease), box-shadow .24s var(--ease);
}

.page-faq .faq-block--moss .faq-item {
  background: var(--moss-panel);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--stone-edge);
  transition: background .24s var(--ease), box-shadow .24s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--neon-cyan);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .faq-item[open]::before {
  background: var(--neon-cyan);
  box-shadow: var(--faq-glow-cyan);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: start;
  padding: 15px 16px 15px 18px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-item__num {
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--dark-gold);
}

.page-faq .faq-item__q {
  display: block;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ivory-text);
}

.page-faq .faq-item__mark {
  position: relative;
  flex: none;
  width: 15px;
  height: 15px;
  margin-top: 5px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--neon-cyan);
  transition: transform .28s var(--ease), opacity .28s var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 6px;
  width: 15px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 15px;
}

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

.page-faq .faq-item__body {
  padding: 2px 18px 18px 44px;
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--lichen-muted);
}

/* ---------- 设备分栏 ---------- */
.page-faq .dev-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: clamp(24px, 3.6vw, 40px);
}

.page-faq .dev-card {
  position: relative;
  border: var(--line-thick);
  background: var(--ink-deep);
  padding: 24px 20px 22px;
  overflow: hidden;
}

.page-faq .dev-card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 4px;
  background: var(--rank-gradient);
}

.page-faq .dev-card--mob::after {
  background: linear-gradient(135deg, var(--dark-gold) 0%, var(--magenta-flare) 100%);
}

.page-faq .dev-card__tag {
  margin: 0;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--lichen-muted);
}

.page-faq .dev-card__title {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 400;
  letter-spacing: .04em;
  color: var(--ivory-text);
}

.page-faq .dev-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .dev-card__list li {
  position: relative;
  padding: 10px 0 10px 20px;
  border-top: var(--faq-hair);
  font-size: 15px;
  line-height: 1.72;
  color: var(--lichen-muted);
}

.page-faq .dev-card__list li:first-child {
  border-top: none;
}

.page-faq .dev-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  width: 8px;
  height: 2px;
  background: var(--dark-gold);
}

.page-faq .dev-card__link {
  display: inline-block;
  margin-top: 16px;
  color: var(--neon-cyan);
  font-size: 14px;
  letter-spacing: .04em;
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 227, 210, .45);
  padding-bottom: 2px;
  transition: border-color .22s var(--ease), color .22s var(--ease);
}

.page-faq .dev-card__link:hover {
  color: var(--ivory-text);
  border-color: var(--ivory-text);
}

/* ---------- 申诉步骤 ---------- */
.page-faq .steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-step;
}

.page-faq .steps__node {
  position: relative;
  border: var(--faq-hair);
  background: var(--moss-panel);
  padding: 30px 18px 22px;
}

.page-faq .steps__num {
  position: absolute;
  top: -1px;
  left: -1px;
  padding: 4px 10px;
  font-size: 11px;
  letter-spacing: .16em;
  background: var(--dark-gold);
  color: var(--ink-deep);
}

.page-faq .steps__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: .04em;
  color: var(--ivory-text);
}

.page-faq .steps__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--lichen-muted);
}

/* ---------- 申诉面板 ---------- */
.page-faq .faq-appeal-figure {
  margin-top: clamp(26px, 4vw, 40px);
}

.page-faq .appeal-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: clamp(24px, 3.6vw, 38px);
  border: var(--line-thick);
  box-shadow: var(--shadow-hard);
  background: var(--moss-panel);
  padding: 24px 20px;
}

.page-faq .appeal-panel__mail {
  margin: 12px 0 0;
  font-size: clamp(19px, 3.4vw, 26px);
  letter-spacing: .02em;
  color: var(--neon-cyan);
  word-break: break-all;
}

.page-faq .appeal-panel__text {
  margin: 14px 0 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--lichen-muted);
}

.page-faq .appeal-panel__side {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-start;
  border-top: var(--faq-hair);
  padding-top: 20px;
}

.page-faq .appeal-panel__side-title {
  flex: 1 0 100%;
  margin: 0;
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--dark-gold);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .dev-split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

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

  .page-faq .appeal-panel {
    grid-template-columns: 1fr auto;
    align-items: start;
    padding: 28px 26px;
  }

  .page-faq .appeal-panel__side {
    border-top: none;
    border-left: var(--faq-hair);
    padding: 0 0 0 24px;
    flex-direction: column;
    align-items: stretch;
    min-width: 190px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .cmp__head,
  .page-faq .cmp__row {
    display: grid;
    grid-template-columns: 216px minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-faq .cmp__head {
    display: grid;
    background: rgba(44, 58, 53, .55);
  }

  .page-faq .cmp__head .cmp__cell {
    padding: 12px 16px;
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--lichen-muted);
  }

  .page-faq .cmp__head .cmp__cell--item {
    color: var(--dark-gold);
  }

  .page-faq .cmp__cell--classic,
  .page-faq .cmp__cell--season {
    border-top: none;
    border-left: var(--faq-hair);
  }

  .page-faq .cmp__cell--classic::before,
  .page-faq .cmp__cell--season::before {
    display: none;
  }

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

  .page-faq .steps__node {
    border-left: none;
  }

  .page-faq .steps__node:first-child {
    border-left: var(--faq-hair);
  }

  .page-faq .faq-item > summary {
    padding: 18px 20px 18px 22px;
  }

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

  .page-faq .faq-item__body {
    padding: 2px 22px 20px 48px;
  }
}

@media (min-width: 1160px) {
  .page-faq .cmp__head,
  .page-faq .cmp__row {
    grid-template-columns: 240px minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-faq .dev-card {
    padding: 30px 26px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__link,
  .page-faq .faq-item,
  .page-faq .faq-item::before,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .dev-card__link {
    transition: none;
  }

  .page-faq .faq-jump__link:hover {
    transform: none;
  }
}