.page-faq {
  --faq-rail-w: 252px;
  --faq-radius: 18px;
  background: var(--ink-900);
  color: var(--paper);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(28px, 5vw, 60px) 0 clamp(34px, 5vw, 68px);
  border-bottom: 1px solid var(--line-400);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--fox) 0%, var(--fox-warm) 42%, var(--live) 100%);
  opacity: 0.9;
}

.page-faq .faq-hero__shell {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  align-items: end;
}

.page-faq .breadcrumb {
  margin-bottom: 18px;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--fox);
  text-transform: uppercase;
}

.page-faq .faq-hero__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(30px, 7vw, 56px);
  line-height: 1.06;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 0 0 24px;
  max-width: 54ch;
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.78;
  color: var(--steel);
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
}

.page-faq .faq-quick {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px 9px 12px;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-pill);
  background: var(--ink-700);
  color: var(--paper);
  font-size: 14px;
  text-decoration: none;
  transition: border-color var(--fast) var(--ease), background var(--fast) var(--ease), transform var(--fast) var(--ease);
}

.page-faq .faq-quick:hover,
.page-faq .faq-quick:focus-visible {
  border-color: var(--fox);
  background: var(--fox-soft);
  transform: translateY(-2px);
}

.page-faq .faq-quick__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fox-warm);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin: 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line-400);
}

.page-faq .faq-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-faq .faq-fact__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 3vw, 26px);
  color: var(--amber);
  line-height: 1;
}

.page-faq .faq-fact__label {
  font-size: 12.5px;
  color: var(--steel);
  letter-spacing: 0.04em;
}

.page-faq .faq-hero__media {
  margin: 0;
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line-600);
}

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

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding-top: clamp(34px, 4.5vw, 62px);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: 26px;
  align-items: start;
}

/* 左侧固定分类 */
.page-faq .faq-rail {
  border: 1px solid var(--line-400);
  border-radius: var(--faq-radius);
  background: var(--ink-700);
  padding: 18px 18px 20px;
}

.page-faq .faq-rail__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--steel);
}

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

.page-faq .faq-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  color: var(--paper);
  font-size: 14px;
  line-height: 1.45;
  text-decoration: none;
  transition: background var(--fast) var(--ease), color var(--fast) var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  background: var(--live-soft);
  color: var(--live);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fox-warm);
  flex: none;
}

.page-faq .faq-rail__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-400);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-flow {
  display: grid;
  gap: 0;
  min-width: 0;
}

.page-faq .faq-item {
  border-top: 1px solid var(--line-400);
  scroll-margin-top: 96px;
}

.page-faq .faq-item:last-child {
  border-bottom: 1px solid var(--line-400);
}

.page-faq .faq-item__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 6px 16px;
  align-items: center;
  padding: clamp(16px, 2.8vw, 26px) 6px;
  cursor: pointer;
  list-style: none;
  transition: background var(--fast) var(--ease);
}

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

.page-faq .faq-item__summary:hover {
  background: rgba(255, 255, 255, 0.02);
}

.page-faq .faq-item__summary:focus-visible {
  outline: 2px solid var(--live);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.page-faq .faq-item__index {
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.6vw, 24px);
  line-height: 1;
  color: var(--fox);
  padding-top: 2px;
}

.page-faq .faq-item__head {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.page-faq .faq-item__title {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.7vw, 27px);
  line-height: 1.18;
  color: var(--paper);
  letter-spacing: 0.01em;
}

.page-faq .faq-item__sub {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--steel);
}

.page-faq .faq-item__cue {
  position: relative;
  width: 30px;
  height: 30px;
  flex: none;
  border: 1px solid var(--line-600);
  border-radius: 50%;
  display: inline-block;
}

.page-faq .faq-item__cue::before,
.page-faq .faq-item__cue::after {
  content: "";
  position: absolute;
  background: var(--fox-warm);
  border-radius: 2px;
  transition: transform var(--fast) var(--ease), opacity var(--fast) var(--ease);
}

.page-faq .faq-item__cue::before {
  top: 50%;
  left: 8px;
  right: 8px;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-faq .faq-item__cue::after {
  left: 50%;
  top: 8px;
  bottom: 8px;
  width: 1.5px;
  transform: translateX(-50%);
}

.page-faq .faq-item[open] .faq-item__cue::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-item[open] .faq-item__cue {
  border-color: var(--live);
}

.page-faq .faq-item[open] .faq-item__cue::before {
  background: var(--live);
}

.page-faq .faq-item__body {
  padding: 0 6px clamp(22px, 3.4vw, 36px);
  animation: faq-drop 240ms var(--ease);
}

@keyframes faq-drop {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-faq .faq-item__lead {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--steel);
}

.page-faq .faq-item__foot {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-item__foot--live {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: var(--live-soft);
  border-left: 2px solid var(--live);
  color: var(--paper);
}

.page-faq .faq-item__foot a,
.page-faq .advice__text a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 步骤列表 ---------- */
.page-faq .step-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  counter-reset: none;
}

.page-faq .step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: var(--ink-700);
  border-left: 2px solid var(--line-600);
  transition: border-color var(--fast) var(--ease), background var(--fast) var(--ease);
}

.page-faq .step:hover {
  border-left-color: var(--live);
  background: var(--ink-600);
}

.page-faq .step__num {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--amber);
  flex: none;
  padding-top: 1px;
}

.page-faq .step__text {
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--paper);
  overflow-wrap: break-word;
  word-break: break-word;
}

.page-faq .step__text a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 小屏章节：步骤 + 示意图 */
.page-faq .faq-item__split {
  display: grid;
  gap: 22px;
}

.page-faq .faq-schematic {
  margin: 0;
  padding: 20px 18px 16px;
  border: 1px solid var(--line-400);
  border-radius: var(--faq-radius);
  background: var(--ink-800);
}

.page-faq .faq-schematic svg {
  display: block;
  width: 100%;
  max-width: 320px;
  height: auto;
  margin: 0 auto 12px;
  color: var(--fox-warm);
}

.page-faq .faq-schematic figcaption {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--steel);
  text-align: center;
}

/* 登录章节配图 */
.page-faq .faq-login__media {
  margin: 0 0 18px;
  aspect-ratio: 4 / 3;
  max-width: 480px;
  border-radius: var(--faq-radius);
  overflow: hidden;
  border: 1px solid var(--line-600);
}

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

/* ---------- 移动端建议列表 ---------- */
.page-faq .advice-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .advice {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 14px 16px;
  border: 1px solid var(--line-400);
  border-radius: var(--faq-radius);
  background: var(--ink-800);
}

.page-faq .advice__tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--live);
  text-transform: uppercase;
}

.page-faq .advice__text {
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--paper);
}

/* ---------- 反馈清单 ---------- */
.page-faq .ticket-list {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-faq .ticket-list li {
  position: relative;
  padding-left: 24px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper);
}

.page-faq .ticket-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--live);
  box-shadow: 0 0 0 3px var(--live-soft);
}

/* ---------- 联系卡片 ---------- */
.page-faq .faq-contact-card {
  border: 1px solid var(--line-600);
  border-radius: var(--faq-radius);
  background: var(--ink-700);
  padding: 20px 18px 22px;
  display: grid;
  gap: 4px;
}

.page-faq .faq-contact-card__label {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-faq .faq-contact-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: break-word;
  word-break: break-word;
}

.page-faq .faq-contact-card__note {
  margin: 14px 0 16px;
  font-size: 13px;
  line-height: 1.72;
  color: var(--steel);
}

.page-faq .faq-contact-card .btn {
  justify-self: start;
}

/* ---------- 相关入口 ---------- */
.page-faq .faq-related {
  border-top: 1px solid var(--line-400);
  background: var(--ink-800);
}

.page-faq .faq-related__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-faq .faq-related__item a {
  display: grid;
  gap: 6px;
  padding: 18px 18px 20px;
  border: 1px solid var(--line-400);
  border-radius: var(--faq-radius);
  background: var(--ink-700);
  text-decoration: none;
  color: var(--paper);
  transition: border-color var(--fast) var(--ease), transform var(--fast) var(--ease), background var(--fast) var(--ease);
}

.page-faq .faq-related__item a:hover,
.page-faq .faq-related__item a:focus-visible {
  border-color: var(--fox);
  background: var(--ink-600);
  transform: translateY(-2px);
}

.page-faq .faq-related__title {
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.25;
  color: var(--paper);
}

.page-faq .faq-related__desc {
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--steel);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .advice {
    grid-template-columns: 88px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }

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

  .page-faq .faq-item__split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-schematic {
    padding: 24px 20px 18px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__shell {
    grid-template-columns: minmax(0, 1.16fr) minmax(0, 0.84fr);
    gap: clamp(32px, 4vw, 56px);
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(36px, 4vw, 64px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: clamp(84px, 12vh, 116px);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__body {
    animation: none;
  }

  .page-faq .faq-quick,
  .page-faq .faq-related__item a {
    transition: none;
  }

  .page-faq .faq-quick:hover,
  .page-faq .faq-related__item a:hover {
    transform: none;
  }
}