.page-faq {
  --faq-ink: #0B1B2B;
  --faq-ink-soft: #46596B;
  --faq-ink-mute: #6B7C8A;
  --faq-sticky-top: var(--header-h-solid);
  background: var(--warm);
  color: var(--faq-ink);
  font-variant-numeric: tabular-nums;
  overflow-wrap: break-word;
}

.page-faq img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  padding-bottom: var(--sp-5);
  border-bottom: var(--line);
  background:
    radial-gradient(120% 92% at 86% 0%, rgba(55, 224, 200, .18) 0%, rgba(55, 224, 200, 0) 58%),
    linear-gradient(180deg, var(--warm) 0%, var(--warm) 76%, #ECE9E1 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(11, 27, 43, .06) 0 1px, transparent 1px 108px),
    repeating-linear-gradient(0deg, rgba(11, 27, 43, .06) 0 1px, transparent 1px 108px);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9) 0%, rgba(0, 0, 0, 0) 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9) 0%, rgba(0, 0, 0, 0) 88%);
}

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

.page-faq .faq-hero .breadcrumb {
  margin: 0 0 var(--sp-3);
}

.page-faq .faq-hero .eyebrow {
  display: block;
  margin: 0 0 var(--sp-2);
  color: var(--deep);
}

.page-faq .faq-hero__title {
  margin: var(--sp-2) 0 var(--sp-3);
  max-width: 22ch;
  font-size: 2rem;
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: .015em;
}

.page-faq .faq-hero__mark {
  background-image: linear-gradient(180deg, transparent 62%, var(--aurora) 62%);
  background-repeat: no-repeat;
  padding: 0 .06em;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .faq-hero__aside {
  margin: var(--sp-3) 0 0;
  max-width: 62ch;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--faq-ink-mute);
}

.page-faq .faq-hero__aside a {
  color: var(--deep);
  text-decoration: none;
  border-bottom: 2px solid var(--aurora);
  padding-bottom: 1px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

/* ============ 吸顶主题索引带 ============ */
.page-faq .faq-index {
  position: sticky;
  top: var(--faq-sticky-top);
  z-index: 30;
  background: var(--night);
  border-bottom: 2px solid var(--aurora);
}

.page-faq .faq-index__inner {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: var(--sp-2);
  min-height: 56px;
}

.page-faq .faq-index__label {
  flex: 0 0 auto;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--aurora);
  padding-right: var(--sp-2);
  border-right: 1px solid rgba(55, 224, 200, .35);
  white-space: nowrap;
}

.page-faq .faq-index__list {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 8px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-index__link {
  display: inline-block;
  white-space: nowrap;
  padding: 6px 10px;
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--silver);
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--aurora);
  border-color: var(--aurora);
  background: rgba(55, 224, 200, .1);
}

.page-faq .faq-index__top {
  flex: 0 0 auto;
  padding: 6px 10px;
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--silver);
  text-decoration: none;
  border: 2px solid rgba(201, 210, 218, .32);
  border-radius: var(--radius);
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-index__top:hover,
.page-faq .faq-index__top:focus-visible {
  color: var(--aurora);
  border-color: var(--aurora);
}

/* ============ 问答分组 ============ */
.page-faq .faq-group {
  padding: var(--sp-5) 0;
  border-bottom: var(--line);
  scroll-margin-top: calc(var(--header-h-solid) + 72px);
  transition: background-color var(--dur-slow) var(--ease), box-shadow var(--dur-slow) var(--ease);
}

.page-faq .faq-group:target {
  background: var(--frost);
  box-shadow: inset 5px 0 0 var(--aurora);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
}

.page-faq .faq-group__no {
  display: block;
  width: 68px;
  padding-top: 10px;
  border-top: 4px solid var(--aurora);
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .16em;
  color: var(--faq-ink-mute);
}

.page-faq .faq-group__title {
  margin: 0 0 var(--sp-2);
  font-size: clamp(1.45rem, 3.6vw, 2.2rem);
  line-height: 1.25;
  letter-spacing: .06em;
}

.page-faq .faq-group__desc {
  margin: 0;
  max-width: 64ch;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--faq-ink-soft);
}

.page-faq .qa-list {
  display: grid;
  gap: 14px;
}

/* ============ 问答卡 ============ */
.page-faq .qa {
  background: #FFFFFF;
  border: var(--line);
  border-radius: var(--radius);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .qa:hover {
  border-color: var(--aurora);
}

.page-faq .qa[open] {
  background: var(--frost);
  border-color: var(--aurora);
  box-shadow: 5px 5px 0 var(--polar);
}

.page-faq .qa__summary {
  display: grid;
  grid-template-columns: 1fr 20px;
  grid-template-areas:
    "no sign"
    "q  q";
  gap: 8px var(--sp-2);
  align-items: start;
  padding: var(--sp-3);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__summary::marker {
  content: "";
}

.page-faq .qa__no {
  grid-area: no;
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: .3em;
  font-size: .74rem;
  font-weight: 800;
  letter-spacing: .14em;
  color: var(--faq-ink-mute);
  white-space: nowrap;
}

.page-faq .qa__no::before {
  content: "";
  flex: 0 0 auto;
  width: 14px;
  height: 2px;
  background: var(--aurora);
}

.page-faq .qa__q {
  grid-area: q;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: .015em;
  color: var(--faq-ink);
}

.page-faq .qa__sign {
  grid-area: sign;
  position: relative;
  justify-self: end;
  width: 18px;
  height: 18px;
  margin-top: .3em;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--faq-ink);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .qa__sign::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 2px;
}

.page-faq .qa__sign::after {
  left: 8px;
  top: 0;
  width: 2px;
  height: 18px;
}

.page-faq .qa[open] .qa__sign::after {
  transform: scaleY(0);
}

.page-faq .qa[open] .qa__sign::before,
.page-faq .qa[open] .qa__sign::after {
  background: var(--deep);
}

.page-faq .qa__body {
  margin: 0 var(--sp-3);
  padding: var(--sp-3) 0;
  border-top: 1px dashed rgba(11, 27, 43, .2);
}

.page-faq .qa__body p {
  margin: 0 0 var(--sp-2);
  font-size: .98rem;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .qa__body ul {
  margin: 0 0 var(--sp-2);
  padding-left: 1.15em;
  font-size: .98rem;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

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

.page-faq .qa__body strong {
  color: var(--faq-ink);
}

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

.page-faq .qa__help {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-top: var(--sp-1);
}

.page-faq .qa__help-label {
  font-size: .82rem;
  letter-spacing: .06em;
  color: var(--faq-ink-mute);
}

.page-faq .qa__help-btn {
  appearance: none;
  -webkit-appearance: none;
  font: inherit;
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--faq-ink);
  background: #FFFFFF;
  border: 2px solid var(--silver);
  border-radius: var(--radius);
  padding: 6px 12px;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .qa__help-btn:hover,
.page-faq .qa__help-btn:focus-visible {
  border-color: var(--aurora);
  background: #FFFFFF;
  color: var(--deep);
}

/* ============ 四步自查（深色打断区） ============ */
.page-faq .faq-diagnose {
  position: relative;
  overflow: hidden;
  padding: var(--sp-5) 0;
  background: var(--night);
  color: var(--warm);
  border-top: var(--line);
  border-bottom: var(--line);
}

.page-faq .faq-diagnose::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(127, 182, 224, .12) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(0deg, rgba(127, 182, 224, .12) 0 1px, transparent 1px 88px);
}

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

.page-faq .faq-diagnose .eyebrow {
  color: var(--aurora);
}

.page-faq .faq-diagnose__title {
  margin: var(--sp-2) 0 var(--sp-2);
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  line-height: 1.22;
  letter-spacing: .06em;
  color: var(--warm);
}

.page-faq .faq-diagnose__lede {
  margin: 0 0 var(--sp-4);
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-faq .faq-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
  margin: 0 0 var(--sp-4);
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  padding-top: var(--sp-3);
  border-top: 2px dashed rgba(201, 210, 218, .34);
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  top: -7px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--aurora);
  box-shadow: 0 0 0 4px rgba(55, 224, 200, .14);
}

.page-faq .faq-step__no {
  display: block;
  margin-bottom: 10px;
  font-size: 1.9rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--aurora);
}

.page-faq .faq-step__title {
  margin: 0 0 8px;
  font-size: 1.05rem;
  letter-spacing: .06em;
  color: var(--warm);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: .94rem;
  line-height: 1.75;
  color: var(--silver);
}

.page-faq .faq-diagnose__media {
  margin: 0;
}

.page-faq .faq-diagnose__media .media__frame {
  border: var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--deep);
}

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

.page-faq .faq-diagnose__media .media__caption {
  margin-top: var(--sp-2);
  color: var(--mist);
  font-size: .86rem;
  line-height: 1.7;
}

/* ============ 兜底区 ============ */
.page-faq .faq-fallback {
  padding: var(--sp-5) 0;
  background: var(--polar);
  color: var(--warm);
  border-top: 2px solid rgba(201, 210, 218, .24);
}

.page-faq .faq-fallback .eyebrow {
  color: var(--aurora);
}

.page-faq .faq-fallback__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-4);
  align-items: center;
}

.page-faq .faq-fallback__title {
  margin: var(--sp-2) 0 var(--sp-2);
  font-size: clamp(1.6rem, 4.2vw, 2.6rem);
  line-height: 1.2;
  letter-spacing: .06em;
  color: var(--warm);
}

.page-faq .faq-fallback__text {
  margin: 0;
  max-width: 58ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-faq .faq-fallback__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-3);
}

.page-faq .faq-fallback__note {
  margin: var(--sp-3) 0 0;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-fallback__note a {
  color: var(--aurora);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 224, 200, .5);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-faq .faq-fallback__media {
  margin: 0;
  width: 100%;
  max-width: 400px;
  justify-self: center;
}

.page-faq .faq-fallback__media img {
  width: 100%;
  height: auto;
  border: var(--line);
  border-radius: var(--radius);
  object-fit: cover;
}

/* ============ 响应式 ============ */
@media (max-width: 640px) {
  .page-faq .faq-index__label {
    display: none;
  }

  .page-faq .faq-index__top {
    padding: 6px 8px;
    font-size: .68rem;
  }

  .page-faq .faq-index__link {
    font-size: .76rem;
    padding: 6px 8px;
  }

  .page-faq .qa__summary {
    padding: var(--sp-2);
    gap: 8px;
  }

  .page-faq .qa__body {
    margin: 0 var(--sp-2);
  }

  .page-faq .qa[open] {
    box-shadow: 3px 3px 0 var(--polar);
  }
}

@media (min-width: 720px) {
  .page-faq .qa__summary {
    grid-template-columns: 78px minmax(0, 1fr) 20px;
    grid-template-areas: "no q sign";
    align-items: start;
    gap: var(--sp-2);
  }

  .page-faq .qa__q {
    font-size: 1.08rem;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero__title {
    font-size: clamp(2.4rem, 5.6vw, 4.4rem);
  }

  .page-faq .faq-hero__lede {
    font-size: 1.08rem;
  }

  .page-faq .faq-group__head {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: var(--sp-3);
  }

  .page-faq .qa-list {
    padding-left: 40px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-fallback__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: var(--sp-5);
  }
}

@media (min-width: 1100px) {
  .page-faq .qa-list {
    padding-left: 120px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
    animation: none !important;
  }
}