.page-faq {
  --qa-rule: #1D3A63;
  --qa-dash: rgba(29, 58, 99, 0.85);
  background: var(--deep);
  color: var(--white);
  overflow-x: clip;
}

/* ---------- 位置提示 ---------- */
.page-faq .faq-top {
  padding-top: 26px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 30px 0 0;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 26px;
}

.page-faq .faq-hero__kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-data);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--turf);
}

.page-faq .faq-hero__kicker::before {
  content: "";
  width: 32px;
  height: 3px;
  background: var(--turf);
  transform: skewX(-20deg);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-2xl);
  line-height: 1.12;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero__text {
  margin: 18px 0 0;
  max-width: 56ch;
  font-size: var(--fs-md);
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-hero__aside {
  position: relative;
  overflow: hidden;
  max-width: 100%;
  padding: 20px 20px 14px;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  background: var(--arena);
}

.page-faq .faq-hero__aside::after {
  content: "";
  position: absolute;
  top: -60%;
  right: -35%;
  width: 62%;
  height: 220%;
  background: linear-gradient(90deg, transparent, rgba(255, 106, 26, 0.15));
  transform: skewX(-18deg);
  pointer-events: none;
}

.page-faq .faq-hero__aside-title {
  margin: 0 0 4px;
  font-family: var(--font-data);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  color: var(--signal-soft);
}

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

.page-faq .faq-hero__stats li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--qa-dash);
}

.page-faq .faq-hero__stats li:last-child {
  border-bottom: 0;
}

.page-faq .faq-hero__stats-k {
  font-size: var(--fs-sm);
  color: var(--mist);
}

.page-faq .faq-hero__stats-v {
  font-family: var(--font-data);
  font-size: var(--fs-lg);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--white);
}

/* ---------- 章节导航带 ---------- */
.page-faq .faq-navstrip {
  margin-top: 32px;
  background: var(--paper);
  border-top: 3px solid var(--turf);
  border-bottom: 1px solid rgba(6, 13, 28, 0.14);
}

.page-faq .faq-navstrip__list {
  display: flex;
  gap: 8px;
  padding-top: 12px;
  padding-bottom: 12px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-navstrip__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-navstrip a {
  flex: 0 0 auto;
  white-space: nowrap;
  padding: 9px 15px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  background: var(--deep);
  color: var(--white);
  font-size: var(--fs-sm);
  font-weight: 700;
  text-decoration: none;
  transition: background-color 200ms var(--ease), color 200ms var(--ease);
}

.page-faq .faq-navstrip a:hover {
  background: var(--turf-deep);
  color: var(--white);
}

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

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  padding-top: 46px;
  padding-bottom: 8px;
}

.page-faq .faq-body > .faq-group + .faq-group {
  margin-top: 54px;
  padding-top: 46px;
  border-top: 1px solid var(--qa-rule);
}

.page-faq .faq-group {
  scroll-margin-top: 110px;
}

.page-faq .faq-group__num {
  display: inline-block;
  font-family: var(--font-data);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  color: var(--turf);
}

.page-faq .faq-group__title {
  margin: 10px 0 0;
  padding-left: 14px;
  border-left: 4px solid var(--turf);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-xl);
  line-height: 1.28;
}

.page-faq .faq-group__note {
  margin: 14px 0 0;
  padding-left: 18px;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-group__body {
  margin-top: 24px;
  min-width: 0;
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 24px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--edge);
}

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

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

.page-faq .qa {
  border-bottom: 1px solid var(--qa-rule);
}

.page-faq .qa__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__num {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-data);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-faq .qa__q {
  flex: 1 1 auto;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-md);
  line-height: 1.55;
  color: var(--white);
  transition: color 180ms var(--ease);
}

.page-faq .qa__head:hover .qa__q {
  color: var(--turf);
}

.page-faq .qa__head:focus-visible {
  outline: 2px solid var(--turf);
  outline-offset: 4px;
  border-radius: 4px;
}

.page-faq .qa__sign {
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  margin-top: 1px;
  display: grid;
  place-items: center;
  border: 1px solid var(--edge);
  border-radius: 50%;
  color: var(--turf);
  font-family: var(--font-data);
  font-size: 15px;
  line-height: 1;
  transition: transform 220ms var(--ease), background-color 220ms var(--ease),
    border-color 220ms var(--ease), color 220ms var(--ease);
}

.page-faq .qa__sign::before {
  content: "+";
}

.page-faq .qa[open] .qa__sign {
  transform: rotate(45deg);
  background: var(--signal);
  border-color: var(--signal);
  color: var(--deep);
}

.page-faq .qa__a {
  margin: 0;
  padding: 14px 0 20px 34px;
  border-top: 1px dashed var(--qa-dash);
}

.page-faq .qa__a p {
  margin: 0;
  font-size: var(--fs-md);
  line-height: 1.8;
  color: var(--mist);
}

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

.page-faq .qa__a a:hover {
  color: var(--signal-soft);
}

.page-faq .qa[open] .qa__a {
  animation: faqAnswerIn 180ms var(--ease) both;
}

@keyframes faqAnswerIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 底部联系 ---------- */
.page-faq .faq-help {
  margin-top: 64px;
  padding: 44px 0 56px;
  background: linear-gradient(180deg, var(--arena), var(--deep) 90%);
  border-top: 3px solid var(--signal);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 26px;
}

.page-faq .faq-help h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-xl);
  line-height: 1.25;
}

.page-faq .faq-help__text {
  margin: 14px 0 0;
  max-width: 52ch;
  line-height: 1.75;
  color: var(--mist);
}

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

.page-faq .faq-help__card {
  padding: 20px;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  background: rgba(6, 13, 28, 0.62);
}

.page-faq .faq-help__row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px dashed var(--qa-dash);
}

.page-faq .faq-help__row:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-help__key {
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--turf);
}

.page-faq .faq-help__val {
  flex: 1 1 200px;
  min-width: 0;
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-faq .faq-help__note {
  margin: 14px 0 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-help__btn {
  margin-top: 18px;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-top: 42px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: end;
    gap: 48px;
  }

  .page-faq .faq-hero h1 {
    font-size: var(--fs-3xl);
  }

  .page-faq .faq-hero__aside {
    padding: 24px 26px 18px;
  }

  .page-faq .faq-navstrip__list {
    flex-wrap: wrap;
    overflow: visible;
  }

  .page-faq .faq-body {
    padding-top: 58px;
  }

  .page-faq .faq-group {
    display: grid;
    grid-template-columns: 4fr 8fr;
    column-gap: 48px;
    align-items: start;
  }

  .page-faq .faq-group__body {
    margin-top: 0;
  }

  .page-faq .faq-group__title {
    font-size: var(--fs-xl);
  }

  .page-faq .faq-help {
    margin-top: 80px;
    padding: 54px 0 64px;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: 7fr 5fr;
    align-items: center;
    gap: 52px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-navstrip a,
  .page-faq .qa__q,
  .page-faq .qa__sign {
    transition: none;
  }

  .page-faq .qa[open] .qa__a {
    animation: none;
  }
}