.page-faq {
  --faq-rail-w: 16.5rem;
  padding-bottom: clamp(2.5rem, 7vw, 5rem);
}

.page-faq .breadcrumb {
  padding-top: clamp(1rem, 3vw, 1.75rem);
}

.page-faq .crumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--fs-12);
  color: var(--rock);
}

.page-faq .crumb-list li + li::before {
  content: "/";
  margin-right: .45rem;
  color: var(--grid);
}

.page-faq .crumb-list a {
  color: var(--rock);
  text-decoration: none;
  transition: color .16s var(--ease);
}

.page-faq .crumb-list a:hover {
  color: var(--neon);
}

.page-faq .crumb-current {
  color: var(--bone);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  display: grid;
  gap: 1.75rem;
  padding-block: 1.75rem 2.25rem;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero-copy .eyebrow {
  margin: 0;
}

.page-faq .faq-hero-copy .display {
  margin: .65rem 0 1rem;
  font-size: clamp(2rem, 6.2vw, 3.4rem);
}

.page-faq .faq-hero-copy .lede {
  margin: 0;
  max-width: 46ch;
  color: var(--rock);
  font-size: var(--fs-16);
  line-height: 1.75;
}

.page-faq .faq-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem 1.5rem;
  margin: 1.6rem 0 0;
  padding-top: 1.2rem;
  border-top: 1px dashed var(--line);
  font-size: var(--fs-12);
  color: var(--rock);
}

.page-faq .faq-fact {
  display: inline-flex;
  align-items: baseline;
  gap: .3rem;
  white-space: nowrap;
}

.page-faq .faq-fact .num {
  font-size: var(--fs-20);
  font-weight: 800;
  color: var(--neon);
  letter-spacing: -.01em;
}

.page-faq .faq-hero-visual {
  position: relative;
  margin: 0;
}

.page-faq .faq-hero-visual .media-frame {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--steel);
}

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

.page-faq .faq-hero-visual::after {
  content: "";
  position: absolute;
  right: -.4rem;
  bottom: -.4rem;
  width: 5.5rem;
  height: 5.5rem;
  border-right: 3px solid var(--clay);
  border-bottom: 3px solid var(--clay);
  border-radius: 0 0 var(--radius) 0;
  pointer-events: none;
}

.page-faq .media-caption {
  margin: .75rem 0 0;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--rock);
  max-width: 52ch;
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-layout {
  display: grid;
  gap: 2rem;
  padding-top: 2.25rem;
}

.page-faq .faq-main {
  min-width: 0;
}

/* ---------- 分类索引 ---------- */

.page-faq .faq-rail-title {
  margin: 0 0 .7rem;
  padding-left: .85rem;
  font-size: var(--fs-10);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--rock);
}

.page-faq .faq-rail-list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail-link {
  display: flex;
  align-items: baseline;
  gap: .7rem;
  padding: .55rem .9rem .55rem .8rem;
  border-left: 3px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--rock);
  font-size: var(--fs-14);
  line-height: 1.45;
  text-decoration: none;
  transition: color .16s var(--ease), background-color .16s var(--ease), border-color .16s var(--ease);
}

.page-faq .faq-rail-link:hover {
  color: var(--bone);
  background: rgba(62, 76, 99, .22);
}

.page-faq .faq-rail-link[aria-current="true"] {
  color: var(--bone);
  border-left-color: var(--clay);
  background: linear-gradient(90deg, rgba(228, 87, 46, .18), rgba(228, 87, 46, 0) 88%);
}

.page-faq .faq-rail-idx {
  flex: none;
  font-size: var(--fs-12);
  color: var(--grid);
  letter-spacing: .06em;
  transition: color .16s var(--ease);
}

.page-faq .faq-rail-link[aria-current="true"] .faq-rail-idx {
  color: var(--clay);
}

/* ---------- 关键词筛选 ---------- */

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  align-items: center;
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .filter-btn {
  padding: .5rem .85rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--rock);
  font-family: inherit;
  font-size: var(--fs-12);
  line-height: 1;
  cursor: pointer;
  transition: color .16s var(--ease), border-color .16s var(--ease), background-color .16s var(--ease);
}

.page-faq .filter-btn:hover {
  color: var(--bone);
  border-color: var(--rock);
}

.page-faq .filter-btn[aria-pressed="true"] {
  color: var(--ink-deep);
  background: var(--clay);
  border-color: var(--clay);
  font-weight: 600;
}

/* ---------- 问题分组 ---------- */

.page-faq .faq-group {
  scroll-margin-top: calc(var(--head-h) + 1.25rem);
}

.page-faq .faq-group + .faq-group {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: .85rem;
}

.page-faq .faq-group-idx {
  flex: none;
  font-size: var(--fs-14);
  font-weight: 800;
  color: var(--clay);
  letter-spacing: .06em;
}

.page-faq .faq-group-head .h2 {
  margin: 0;
  font-size: clamp(1.35rem, 3.4vw, 1.9rem);
  line-height: 1.2;
}

.page-faq .faq-group-note {
  margin: .65rem 0 1.6rem;
  max-width: 54ch;
  color: var(--rock);
  font-size: var(--fs-14);
  line-height: 1.7;
}

.page-faq .faq-figure {
  margin: 0 0 1.75rem;
}

.page-faq .faq-figure .media-frame {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--steel);
}

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

/* ---------- 折叠问答 ---------- */

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

.page-faq .faq-item {
  border: 0;
  border-bottom: 1px solid var(--line-soft);
  border-radius: 0;
  background: transparent;
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: 2.3rem minmax(0, 1fr) 1.05rem;
  align-items: start;
  gap: .55rem;
  width: 100%;
  padding: 1rem 0;
  border: 0;
  background: none;
  color: var(--bone);
  font-family: inherit;
  font-size: var(--fs-16);
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  transition: color .16s var(--ease);
}

.page-faq .faq-q:hover {
  color: var(--flame);
}

.page-faq .faq-q-idx {
  padding-top: .2rem;
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--clay);
}

.page-faq .faq-q-text {
  display: block;
  min-width: 0;
}

.page-faq .faq-q-mark {
  position: relative;
  justify-self: end;
  width: 1.05rem;
  height: 1.05rem;
  margin-top: .38rem;
}

.page-faq .faq-q-mark::before,
.page-faq .faq-q-mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  border-radius: 2px;
  background: var(--neon);
  transition: transform .16s var(--ease), background-color .16s var(--ease);
}

.page-faq .faq-q-mark::after {
  transform: rotate(90deg);
}

.page-faq .faq-item[data-open] .faq-q-mark::after {
  transform: rotate(0deg);
}

.page-faq .faq-item[data-open] .faq-q-mark::before,
.page-faq .faq-item[data-open] .faq-q-mark::after {
  background: var(--clay);
}

.page-faq .faq-item .panel-body {
  padding: 0 0 1.3rem calc(2.3rem + .55rem);
  transition: height .16s var(--ease);
}

.page-faq .faq-item .panel-body p {
  margin: 0 0 .6rem;
  max-width: 62ch;
  color: var(--rock);
  font-size: var(--fs-14);
  line-height: 1.78;
}

.page-faq .faq-item .panel-body p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item .panel-body a,
.page-faq .faq-callout a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color .16s var(--ease);
}

.page-faq .faq-item .panel-body a:hover,
.page-faq .faq-callout a:hover {
  color: var(--flame);
}

.page-faq .step-key {
  color: var(--bone);
  font-weight: 600;
  background-image: linear-gradient(transparent 62%, rgba(76, 224, 165, .34) 62%);
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

/* ---------- 底部提示 ---------- */

.page-faq .faq-callout {
  margin-top: 3rem;
  padding: 1.5rem 1.5rem 1.6rem;
  border-radius: var(--radius);
}

.page-faq .faq-callout .h3 {
  margin: 0 0 .7rem;
  font-size: var(--fs-20);
}

.page-faq .faq-callout p {
  margin: 0 0 .6rem;
  max-width: 58ch;
  font-size: var(--fs-14);
  line-height: 1.78;
  color: var(--bone);
}

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

/* ---------- 响应式 ---------- */

@media (max-width: 61.99rem) {
  .page-faq .faq-rail-title {
    padding-left: 0;
  }

  .page-faq .faq-rail-list {
    display: flex;
    gap: .45rem;
    overflow-x: auto;
    padding-bottom: .4rem;
    scrollbar-width: thin;
  }

  .page-faq .faq-rail-link {
    flex: none;
    align-items: center;
    padding: .48rem .85rem;
    border-left: 0;
    border-bottom: 2px solid transparent;
    border-radius: 999px;
    background: var(--slate);
    font-size: var(--fs-12);
    white-space: nowrap;
  }

  .page-faq .faq-rail-link[aria-current="true"] {
    background: rgba(228, 87, 46, .2);
    border-bottom-color: var(--clay);
  }

  .page-faq .faq-rail-idx {
    font-size: var(--fs-10);
  }
}

@media (min-width: 48rem) {
  .page-faq .faq-q {
    grid-template-columns: 2.6rem minmax(0, 1fr) 1.15rem;
    font-size: var(--fs-20);
    padding: 1.15rem 0;
  }

  .page-faq .faq-item .panel-body {
    padding-bottom: 1.5rem;
    padding-left: calc(2.6rem + .55rem);
  }

  .page-faq .faq-callout {
    padding: 1.9rem 2rem 2rem;
  }
}

@media (min-width: 62rem) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    align-items: end;
    gap: 3.25rem;
    padding-block: 2.5rem 3rem;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 3.5rem;
    align-items: start;
    padding-top: 2.75rem;
  }

  .page-faq .faq-rail-inner {
    position: sticky;
    top: calc(var(--head-h) + 1.5rem);
  }

  .page-faq .faq-rail {
    border-right: 1px solid var(--line-soft);
    padding-right: 1.25rem;
  }
}

@media (min-width: 76rem) {
  .page-faq .faq-hero-copy .lede {
    font-size: var(--fs-20);
    line-height: 1.65;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: .01ms !important;
  }
}