.page-faq {
  --faq-rail: 264px;
  --faq-col-gap: 52px;
  --faq-sticky-top: 84px;
}

.page-faq .breadcrumb {
  margin: 0 0 2px;
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  display: grid;
  gap: 26px;
  padding: 30px 0 30px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-size: clamp(31px, 6.6vw, 54px);
  line-height: 1.06;
  letter-spacing: -0.03em;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-hero__title em {
  font-style: normal;
  color: var(--cyan);
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-hero__panel {
  border: 1px solid var(--line);
  border-top: 2px solid var(--orange);
  background: var(--ink-850);
  padding: 16px 18px 6px;
}

.page-faq .faq-hero__panel-title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

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

.page-faq .faq-hero__links li + li {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-hero__links a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
  font-size: 15px;
  color: var(--paper);
  text-decoration: none;
}

.page-faq .faq-hero__links a:hover,
.page-faq .faq-hero__links a:focus-visible {
  color: var(--cyan);
}

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

.page-faq .faq-hero__arrow {
  color: var(--orange);
  font-size: 13px;
  flex: none;
}

/* ============ 布局 ============ */
.page-faq .faq-layout {
  padding: 30px 0 48px;
}

/* ============ 侧栏目录 ============ */
.page-faq .faq-toc {
  border-top: 2px solid var(--cyan);
  background: var(--ink-850);
  padding: 14px 0 12px;
  margin-bottom: 34px;
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-toc__list li {
  flex: none;
}

.page-faq .faq-toc__list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  color: var(--mist);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

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

.page-faq .faq-toc__no {
  font-size: 11px;
  color: var(--orange);
}

.page-faq .faq-toc__note {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ============ 分组 ============ */
.page-faq .faq-group {
  margin-bottom: 46px;
  scroll-margin-top: var(--faq-sticky-top);
}

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

.page-faq .faq-group__head {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__no {
  margin: 0 0 8px;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(21px, 3.4vw, 27px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--paper);
}

.page-faq .faq-group__lead {
  margin: 8px 0 0;
  max-width: 42em;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ============ 配图 ============ */
.page-faq .faq-figure {
  margin: 20px 0 8px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  background: var(--ink-800);
  object-fit: cover;
}

.page-faq .faq-figure--portrait {
  max-width: 100%;
}

.page-faq .faq-figure figcaption {
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
  border-left: 2px solid var(--line);
  padding-left: 10px;
}

/* ============ 折叠问答 ============ */
.page-faq .faq-group__list {
  margin-top: 4px;
}

.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) 14px;
  gap: 10px;
  align-items: start;
  padding: 15px 2px 15px 12px;
  color: var(--paper);
  transition: color 0.18s var(--ease);
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary:hover {
  color: var(--cyan);
}

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

.page-faq .faq-item__no {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding-top: 4px;
}

.page-faq .faq-item__q {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
}

.page-faq .faq-item__mark {
  position: relative;
  width: 12px;
  height: 12px;
  margin-top: 6px;
  color: var(--mist);
  flex: none;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: currentColor;
}

.page-faq .faq-item__mark::before {
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  transform: translateX(-50%);
  transition: transform 0.2s var(--ease);
}

.page-faq .faq-item__mark::after {
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  transform: translateY(-50%);
}

.page-faq .faq-item[open] .faq-item__mark {
  color: var(--cyan);
}

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

.page-faq .faq-item[open] {
  background: linear-gradient(90deg, rgba(53, 240, 208, 0.06), transparent 72%);
}

.page-faq .faq-item[open]::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__no {
  color: var(--cyan);
}

.page-faq .faq-item__body {
  padding: 0 2px 20px 12px;
  font-size: 15.5px;
  line-height: 1.76;
  color: var(--mist);
}

.page-faq .faq-item__body p {
  margin: 0 0 10px;
  max-width: 40em;
}

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

.page-faq .faq-item__body ol,
.page-faq .faq-item__body ul {
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
  max-width: 40em;
}

.page-faq .faq-item__body ol {
  counter-reset: faq-step;
}

.page-faq .faq-item__body ol > li {
  counter-increment: faq-step;
  position: relative;
  padding-left: 32px;
  margin-bottom: 9px;
}

.page-faq .faq-item__body ol > li:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__body ol > li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  width: 22px;
  height: 22px;
  line-height: 20px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--orange);
  border: 1px solid var(--line);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-item__body ul > li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 7px;
}

.page-faq .faq-item__body ul > li:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__body ul > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 1px;
  background: var(--cyan);
}

/* ============ 客服渠道块 ============ */
.page-faq .faq-contact {
  margin-top: 24px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  background: var(--ink-800);
  padding: 18px 18px 16px;
}

.page-faq .faq-contact__title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-faq .faq-contact__list {
  margin: 0;
  padding: 0;
}

.page-faq .faq-contact__row {
  display: grid;
  gap: 3px;
  padding: 10px 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-contact__row:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-contact__row dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .faq-contact__row dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-contact__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.72;
  color: var(--mist);
}

/* ============ 平板与桌面 ============ */
@media (min-width: 700px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.25fr) minmax(240px, 0.75fr);
    align-items: end;
    gap: 36px;
    padding: 46px 0 40px;
  }

  .page-faq .faq-hero__panel {
    padding: 18px 20px 8px;
  }

  .page-faq .faq-figure--portrait {
    max-width: 420px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 58px 0 48px;
    gap: 56px;
  }

  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    column-gap: var(--faq-col-gap);
    align-items: start;
    padding: 52px 0 76px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: var(--faq-sticky-top);
    margin-bottom: 0;
    padding: 16px 18px 18px;
    border: 1px solid var(--line);
    border-top: 2px solid var(--cyan);
  }

  .page-faq .faq-toc__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__list li + li {
    border-top: 1px solid var(--line-soft);
  }

  .page-faq .faq-toc__list a {
    border: 0;
    padding: 11px 0 11px 12px;
    border-left: 1px solid var(--line);
    white-space: normal;
    line-height: 1.45;
  }

  .page-faq .faq-toc__list a:hover,
  .page-faq .faq-toc__list a:focus-visible {
    border-color: var(--cyan) var(--line) var(--line) var(--cyan);
    border-left-color: var(--cyan);
  }

  .page-faq .faq-item > summary {
    grid-template-columns: 64px minmax(0, 1fr) 14px;
    gap: 14px;
    padding: 18px 4px 18px 16px;
  }

  .page-faq .faq-item > summary:hover {
    padding-left: 22px;
  }

  .page-faq .faq-item__body {
    padding: 0 4px 24px 94px;
  }

  .page-faq .faq-contact {
    padding: 22px 24px 20px;
  }

  .page-faq .faq-contact__row {
    grid-template-columns: 112px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item > summary,
  .page-faq .faq-item__mark::before {
    transition: none;
  }
}