.page-faq {
  --faq-rule: rgba(34, 242, 210, .16);
  --faq-panel: rgba(18, 59, 48, .5);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  background:
    radial-gradient(120% 90% at 88% -20%, rgba(34, 242, 210, .13), transparent 62%),
    linear-gradient(180deg, var(--bg-2), var(--bg) 72%);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-faq .breadcrumb {
  margin-bottom: clamp(1.2rem, 3vw, 2rem);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
  margin-top: .6rem;
}

.page-faq .faq-hero__lead h1 {
  font-size: clamp(2.35rem, 7.4vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: -.035em;
  font-weight: 800;
  margin: .55rem 0 1rem;
}

.page-faq .faq-hero__lead .lede {
  max-width: 46ch;
  color: var(--text);
  opacity: .92;
}

.page-faq .faq-hero__meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: .75rem;
  margin: clamp(1.4rem, 3vw, 2.2rem) 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-hero__meta-item {
  display: flex;
  align-items: baseline;
  gap: .6rem;
}

.page-faq .faq-hero__meta-item dt {
  font-size: .95rem;
  color: var(--cyan);
  letter-spacing: .02em;
}

.page-faq .faq-hero__meta-item dd {
  margin: 0;
  font-size: .8125rem;
  color: var(--muted);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--radius-l);
  overflow: hidden;
  border: 1px solid var(--faq-rule);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.85) contrast(1.02);
}

/* 步骤条 */
.page-faq .faq-steps {
  list-style: none;
  margin: clamp(1.8rem, 4vw, 2.8rem) 0 0;
  padding: 0;
  display: grid;
  gap: .7rem;
}

.page-faq .faq-steps__item {
  position: relative;
  padding: 1rem 1.05rem 1.1rem;
  background: rgba(7, 28, 22, .6);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.page-faq .faq-steps__num {
  display: block;
  font-size: .75rem;
  letter-spacing: .16em;
  color: var(--sand);
}

.page-faq .faq-steps__title {
  margin: .4rem 0 .25rem;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-faq .faq-steps__desc {
  margin: 0;
  font-size: .8125rem;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .faq-steps__desc a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(107, 214, 255, .35);
}

.page-faq .faq-steps__desc a:hover,
.page-faq .faq-steps__desc a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* 主体 */
.page-faq .faq-body {
  background: var(--bg);
}

.page-faq .faq-tabs {
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  padding-bottom: .85rem;
  margin-bottom: clamp(1.6rem, 3.5vw, 2.6rem);
  border-bottom: 1px solid var(--line-soft);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-tabs a {
  flex: 0 0 auto;
  padding: .55rem .95rem;
  font-size: .8125rem;
  white-space: nowrap;
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: border-color .18s var(--ease), color .18s var(--ease), background .18s var(--ease);
}

.page-faq .faq-tabs a:hover,
.page-faq .faq-tabs a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(34, 242, 210, .07);
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.8rem, 4vw, 3rem);
}

/* 左栏索引 */
.page-faq .faq-index__list {
  list-style: none;
  margin: .8rem 0 0;
  padding: 0;
  display: grid;
  gap: .1rem;
}

.page-faq .faq-index__list > li {
  padding: .7rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  font-size: .9375rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.page-faq .faq-index__link .mono {
  font-size: .75rem;
  color: var(--sand);
  letter-spacing: .06em;
}

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

.page-faq .faq-index__sub {
  margin: .3rem 0 0 1.85rem;
  font-size: .75rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-index__cta {
  margin-top: 1.5rem;
  padding: 1.15rem 1.1rem 1.2rem;
  border: 1px solid var(--faq-rule);
  border-radius: var(--radius);
}

.page-faq .faq-index__cta-title {
  margin: 0 0 .4rem;
  font-size: .9375rem;
  font-weight: 700;
}

.page-faq .faq-index__cta-text {
  margin: 0 0 1rem;
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--muted);
}

/* 问答分组 */
.page-faq .faq-group {
  padding-top: clamp(1.5rem, 3vw, 2.2rem);
  margin-top: clamp(1.8rem, 4vw, 2.8rem);
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 5.5rem;
}

.page-faq .faq-panels .faq-group:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-group__head {
  margin-bottom: 1.1rem;
}

.page-faq .faq-group__head .eyebrow {
  color: var(--sand);
}

.page-faq .faq-group__head h2 {
  margin: .45rem 0 .5rem;
  font-size: clamp(1.45rem, 3.4vw, 2.05rem);
  line-height: 1.2;
  letter-spacing: -.02em;
  font-weight: 800;
}

.page-faq .faq-group__intro {
  margin: 0;
  max-width: 62ch;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-shot {
  margin: 1.3rem 0 1.6rem;
  max-width: 460px;
  border-radius: var(--radius-l);
  overflow: hidden;
  border: 1px solid var(--faq-rule);
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  filter: saturate(.8);
}

.page-faq .media-frame__caption {
  font-size: .75rem;
  color: var(--muted);
}

/* 折叠问答 */
.page-faq .faq-item {
  margin-top: .7rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--faq-panel);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(34, 242, 210, .4);
}

.page-faq .faq-item[open] {
  border-color: rgba(34, 242, 210, .3);
  background: rgba(18, 59, 48, .78);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.05rem;
  font-size: .9688rem;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -.005em;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1;
  color: var(--cyan);
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
  border-radius: var(--radius);
}

.page-faq .faq-item .disclosure__body {
  padding: 0 1.05rem 1.1rem;
}

.page-faq .faq-item .disclosure__body p {
  margin: 0;
  font-size: .9063rem;
  line-height: 1.8;
  color: var(--text);
  opacity: .88;
  max-width: 68ch;
}

.page-faq .faq-item .disclosure__body a,
.page-faq .faq-note a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(107, 214, 255, .35);
}

.page-faq .faq-item .disclosure__body a:hover,
.page-faq .faq-item .disclosure__body a:focus-visible,
.page-faq .faq-note a:hover,
.page-faq .faq-note a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-note {
  margin: 1.3rem 0 0;
  padding-left: .9rem;
  border-left: 2px solid var(--sand);
  font-size: .8125rem;
  line-height: 1.75;
  color: var(--muted);
}

/* 响应式 */
@media (min-width: 640px) {
  .page-faq .faq-hero__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: 1rem;
  }

  .page-faq .faq-hero__meta-item {
    display: block;
  }

  .page-faq .faq-hero__meta-item dd {
    margin-top: .25rem;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
  }

  .page-faq .faq-steps__item::after {
    content: "";
    position: absolute;
    top: 50%;
    right: -1rem;
    width: 1rem;
    height: 1px;
    background: linear-gradient(90deg, var(--cyan), transparent);
  }

  .page-faq .faq-steps__item:last-child::after {
    display: none;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    align-items: end;
  }

  .page-faq .faq-shot {
    max-width: 420px;
    margin-left: auto;
    margin-right: 0;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
    column-gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 5.5rem;
  }
}