.page-faq {
  --faq-rail: 244px;
  --faq-a-ink: #C3CCDE;
  display: block;
  color: var(--ink);
}

.page-faq a {
  color: var(--cyan);
}

/* ===== 首屏 ===== */
.page-faq .faq-hero {
  position: relative;
  border-bottom: var(--hair);
  background:
    linear-gradient(180deg, rgba(40, 227, 210, 0.07), rgba(10, 14, 24, 0) 62%),
    repeating-linear-gradient(90deg, rgba(42, 51, 72, 0.5) 0 1px, transparent 1px 72px),
    var(--bg);
  padding: 28px 0 34px;
}

.page-faq .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 22px;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-faq .faq-kicker {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq h1 {
  margin: 0 0 16px;
  font-family: var(--font-narrow);
  font-size: clamp(30px, 7vw, 46px);
  line-height: 1.14;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 40rem;
  font-size: 16px;
  line-height: 1.75;
  color: var(--faq-a-ink);
}

.page-faq .faq-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: var(--hair);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-facts li {
  background: var(--panel);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-facts__num {
  font-size: 20px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-faq .faq-facts li:nth-child(3) .faq-facts__num,
.page-faq .faq-facts li:nth-child(4) .faq-facts__num {
  color: var(--accent);
}

.page-faq .faq-facts__label {
  font-size: 13px;
  line-height: 1.4;
  color: var(--muted);
}

/* ===== 布局：左索引 / 右问答 ===== */
.page-faq .help-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding-top: 30px;
  padding-bottom: 64px;
}

.page-faq .help-rail {
  min-width: 0;
}

.page-faq .help-rail__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

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

.page-faq .help-index li {
  flex: none;
}

.page-faq .help-index__link {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 10px 14px;
  border: var(--hair);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}

.page-faq .help-index__link:hover,
.page-faq .help-index__link:focus-visible {
  color: var(--ink);
  border-color: var(--cyan);
}

.page-faq .help-index__num {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--region-ink);
}

.page-faq .help-body {
  min-width: 0;
}

/* ===== 分组 ===== */
.page-faq .faq-group {
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 42px;
  padding-top: 42px;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-group__note {
  margin: 14px 0 20px;
  max-width: 40rem;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-figure {
  margin: 0 0 22px;
}

/* ===== 问答条目 ===== */
.page-faq .faq-list {
  border-top: var(--hair);
}

.page-faq .faq-item {
  border: var(--hair);
  border-top: 0;
  border-radius: var(--radius);
  background: var(--panel);
  transition: background var(--t-fast);
}

.page-faq .faq-item:hover {
  background: #182135;
}

.page-faq .faq-item[open] {
  background: var(--panel);
  border-left: 2px solid var(--accent);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  min-height: 44px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-q__text {
  margin: 0;
  min-width: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
}

.page-faq .faq-q__sign {
  flex: none;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border: var(--hair);
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1;
  color: var(--accent);
  transition: transform var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-item[open] .faq-q__sign {
  transform: rotate(45deg);
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-a {
  padding: 0 18px 20px;
  border-top: 1px dashed var(--line);
  margin-top: 2px;
  padding-top: 14px;
}

.page-faq .faq-a p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--faq-a-ink);
}

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

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

.page-faq .faq-steps {
  margin: 0 0 14px;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--faq-a-ink);
}

.page-faq .faq-steps li {
  margin-bottom: 6px;
}

.page-faq .faq-steps li::marker {
  font-family: var(--font-mono);
  color: var(--accent);
}

/* ===== 联系块 ===== */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.page-faq .faq-contact__list {
  margin: 0;
  border: var(--hair);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding: 12px 16px;
}

.page-faq .faq-contact__row + .faq-contact__row {
  border-top: 1px dashed var(--line);
}

.page-faq .faq-contact__key {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-faq .faq-contact__val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
  word-break: break-word;
}

.page-faq .faq-prefix {
  border: var(--hair);
  border-left: 2px solid var(--region);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 16px;
}

.page-faq .faq-prefix__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--region-ink);
}

.page-faq .faq-prefix__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .faq-prefix__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--faq-a-ink);
}

/* ===== 收尾 ===== */
.page-faq .faq-next {
  border: var(--hair);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(255, 122, 24, 0.08), rgba(20, 27, 43, 0) 58%),
    var(--panel);
  padding: 22px 18px;
}

.page-faq .faq-next__text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--faq-a-ink);
}

.page-faq .faq-next__list {
  margin: 0 0 20px;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--faq-a-ink);
}

.page-faq .faq-next__list li + li {
  margin-top: 4px;
}

.page-faq .faq-next__list li::marker {
  color: var(--accent);
}

.page-faq .faq-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

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

/* ===== 平板 / 桌面 ===== */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 40px 0 48px;
  }

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

  .page-faq .faq-contact__row {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: baseline;
    gap: 12px;
  }

  .page-faq .faq-next {
    padding: 26px 28px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 320px);
    align-items: end;
    gap: 48px;
  }

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

  .page-faq .help-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 48px;
    padding-top: 44px;
    padding-bottom: 88px;
  }

  .page-faq .help-rail {
    position: sticky;
    top: 88px;
    align-self: start;
  }

  .page-faq .help-rail__title {
    padding-left: 14px;
  }

  .page-faq .help-index {
    display: block;
    overflow: visible;
    padding: 0;
    border-left: var(--hair);
  }

  .page-faq .help-index li + li {
    margin-top: 2px;
  }

  .page-faq .help-index__link {
    justify-content: space-between;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    white-space: normal;
    padding: 10px 12px;
  }

  .page-faq .help-index__link:hover,
  .page-faq .help-index__link:focus-visible {
    background: rgba(40, 227, 210, 0.06);
    border-left-color: var(--cyan);
  }

  .page-faq .faq-group + .faq-group {
    margin-top: 56px;
    padding-top: 56px;
  }

  .page-faq .faq-q {
    padding: 18px 22px;
  }

  .page-faq .faq-a {
    padding: 16px 22px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .help-index__link,
  .page-faq .faq-item,
  .page-faq .faq-q__sign {
    transition: none;
  }

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