.page-faq {
  --faq-hair: 1px solid var(--rb-line);
  --faq-body: #C3D3E6;
  background: var(--rb-void);
  color: var(--rb-ice);
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--rb-cyan);
  outline-offset: 3px;
}

/* ---------- 框景首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(1.25rem, 4vw, 2.5rem);
}

.page-faq .faq-hero__frame {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: var(--faq-hair);
  background: linear-gradient(165deg, var(--rb-deck) 0%, var(--rb-void) 72%);
  padding: clamp(1.5rem, 5vw, 3.75rem);
}

.page-faq .faq-hero__frame::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--rb-cyan), var(--rb-violet) 55%, transparent 92%);
  z-index: 3;
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: .26;
  filter: saturate(.7) contrast(1.15);
  z-index: 0;
}

.page-faq .faq-hero__body {
  position: relative;
  z-index: 1;
  max-width: 60rem;
}

.page-faq .faq-hero__title {
  margin: .8rem 0 0;
  font-size: clamp(2.05rem, 6.4vw, 4.4rem);
  line-height: 1.03;
  font-weight: 700;
  letter-spacing: -.02em;
}

.page-faq .faq-hero__lede {
  margin: clamp(1rem, 2.5vw, 1.5rem) 0 0;
  max-width: 62ch;
  font-size: clamp(.98rem, 1.4vw, 1.1rem);
  line-height: 1.8;
  color: var(--faq-body);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: .9rem 2.25rem;
  margin: clamp(1.5rem, 3.5vw, 2.5rem) 0 0;
  padding: clamp(1rem, 2.5vw, 1.35rem) 0 0;
  list-style: none;
  border-top: var(--faq-hair);
}

.page-faq .faq-fact {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  min-width: 0;
}

.page-faq .faq-fact__num {
  font-family: var(--rb-mono);
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  font-weight: 600;
  color: var(--rb-cyan);
  white-space: nowrap;
}

.page-faq .faq-fact__label {
  font-size: .8rem;
  color: var(--rb-steel);
  letter-spacing: .02em;
}

/* ---------- 分类跳转条 ---------- */
.page-faq .faq-jump {
  margin-top: clamp(1.25rem, 3vw, 2rem);
  border-top: var(--faq-hair);
  border-bottom: var(--faq-hair);
  background: var(--rb-deck);
}

.page-faq .faq-jump__list {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-jump__item {
  flex: 0 0 auto;
}

.page-faq .faq-jump__link {
  display: flex;
  align-items: center;
  gap: .55rem;
  padding: .95rem 1.1rem;
  border-right: var(--faq-hair);
  color: var(--rb-steel);
  font-size: .88rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--rb-ease), background-color .2s var(--rb-ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  color: var(--rb-cyan);
  background: rgba(55, 230, 255, .07);
}

.page-faq .faq-jump__num {
  font-family: var(--rb-mono);
  font-size: .72rem;
  color: var(--rb-cyan-deep);
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  padding-top: clamp(1.5rem, 4vw, 3rem);
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
}

.page-faq .faq-main {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  min-width: 0;
}

/* ---------- 分组面板 ---------- */
.page-faq .faq-sec {
  border: var(--faq-hair);
  background: linear-gradient(180deg, rgba(11, 18, 34, .92), rgba(5, 7, 14, .92));
  padding: clamp(1.1rem, 3vw, 2rem);
  scroll-margin-top: 6rem;
}

.page-faq .faq-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .3rem .9rem;
  align-items: baseline;
  padding-bottom: 1rem;
  border-bottom: var(--faq-hair);
}

.page-faq .faq-sec__num {
  font-family: var(--rb-mono);
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--rb-lime);
}

.page-faq .faq-sec__title {
  margin: 0;
  font-size: clamp(1.2rem, 2.4vw, 1.7rem);
  font-weight: 700;
  letter-spacing: .01em;
}

.page-faq .faq-sec__note {
  grid-column: 2;
  margin: .35rem 0 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--rb-steel);
}

/* ---------- 问答手风琴 ---------- */
.page-faq .faq-list {
  margin-top: .35rem;
}

.page-faq .faq-item {
  border-bottom: var(--faq-hair);
}

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

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: .8rem;
  padding: .95rem .2rem .95rem 0;
  list-style: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--rb-ice);
  transition: color .2s var(--rb-ease);
}

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

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

.page-faq .faq-item summary::before {
  content: "+";
  flex: 0 0 auto;
  width: 1ch;
  font-family: var(--rb-mono);
  font-size: 1.15rem;
  line-height: 1.35;
  color: var(--rb-cyan);
}

.page-faq .faq-item[open] summary::before {
  content: "−";
}

.page-faq .faq-item[open] summary,
.page-faq .faq-item summary:hover {
  color: var(--rb-cyan);
}

.page-faq .faq-item:target summary {
  background: rgba(55, 230, 255, .09);
  box-shadow: inset 2px 0 0 var(--rb-cyan);
  padding-left: .7rem;
}

.page-faq .faq-item__body {
  padding: 0 0 1.15rem 1.85rem;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--faq-body);
}

.page-faq .faq-item__body p {
  margin: 0 0 .7rem;
}

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

.page-faq .faq-item__body ul,
.page-faq .faq-item__body ol {
  margin: 0 0 .75rem;
  padding-left: 1.15rem;
}

.page-faq .faq-item__body li {
  margin-bottom: .3rem;
}

.page-faq .faq-item__body li::marker {
  color: var(--rb-cyan-deep);
}

.page-faq .faq-item__body code {
  font-family: var(--rb-mono);
  font-size: .86em;
  color: var(--rb-lime);
  background: rgba(216, 255, 62, .09);
  padding: .1em .35em;
}

/* ---------- 预约问答侧图 ---------- */
.page-faq .faq-sec__split {
  display: grid;
  gap: 1.25rem;
  margin-top: .35rem;
}

.page-faq .faq-sec__split .faq-list {
  margin-top: 0;
}

.page-faq .faq-media {
  margin: 0;
  border: var(--faq-hair);
  background: var(--rb-deck);
  align-self: start;
}

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

.page-faq .faq-media figcaption {
  padding: .65rem .8rem;
  border-top: var(--faq-hair);
  font-family: var(--rb-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--rb-steel);
}

/* ---------- 侧边索引 ---------- */
.page-faq .faq-rail {
  border-top: 2px solid var(--rb-cyan);
  background: var(--rb-deck);
  padding: 1.25rem;
  min-width: 0;
}

.page-faq .faq-rail__title {
  margin: 0 0 .9rem;
  font-family: var(--rb-mono);
  font-size: .74rem;
  font-weight: 400;
  letter-spacing: .16em;
  color: var(--rb-steel);
}

.page-faq .faq-rail__list {
  display: grid;
  gap: .1rem;
  margin: 0 0 1.1rem;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail__link {
  display: block;
  padding: .62rem .2rem .62rem .75rem;
  border-left: 1px solid var(--rb-line);
  color: var(--rb-ice);
  font-size: .88rem;
  line-height: 1.55;
  text-decoration: none;
  transition: color .2s var(--rb-ease), border-color .2s var(--rb-ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--rb-cyan);
  border-left-color: var(--rb-cyan);
}

.page-faq .faq-rail__note {
  margin: 0 0 1.1rem;
  font-size: .8rem;
  line-height: 1.7;
  color: var(--rb-steel);
}

/* ---------- 结尾通道 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(1rem, 3vw, 2rem);
  padding-block: clamp(2rem, 5vw, 3.5rem);
  border-top: var(--faq-hair);
  background:
    radial-gradient(circle at 88% 18%, rgba(139, 92, 255, .22), transparent 58%),
    linear-gradient(120deg, var(--rb-deck), var(--rb-void) 62%);
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: 1.5rem;
}

.page-faq .faq-cta__title {
  margin: .45rem 0 .6rem;
  font-size: clamp(1.45rem, 3.2vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 56ch;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--faq-body);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-sec__split {
    grid-template-columns: minmax(0, 1fr) minmax(0, .58fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 282px;
    align-items: start;
  }

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

@media (max-width: 559px) {
  .page-faq .faq-hero__frame {
    padding: 1.15rem 1rem 1.35rem;
  }

  .page-faq .faq-sec {
    padding: 1rem .85rem;
  }

  .page-faq .faq-jump__link {
    padding: .8rem .8rem;
    font-size: .82rem;
  }

  .page-faq .faq-item__body {
    padding-left: 1.55rem;
  }

  .page-faq .faq-cta__actions .rb-btn {
    flex: 1 1 auto;
    justify-content: center;
  }
}

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