.page-faq {
  --faq-rail-w: 208px;
  background: var(--jb-ink);
  color: var(--jb-text);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 28px 0 88px;
  background-image:
    radial-gradient(760px 420px at 92% 6%, rgba(34, 211, 238, .18), transparent 68%),
    radial-gradient(560px 380px at 2% 96%, rgba(139, 92, 246, .16), transparent 72%);
  border-bottom: 2px solid var(--jb-line);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 44px;
  background: rgba(30, 47, 99, .45);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 40px;
  align-items: center;
}

.page-faq .faq-hero__kicker {
  margin: 22px 0 14px;
  font-family: var(--jb-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--jb-cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 20px;
  font-size: clamp(36px, 6.4vw, 72px);
  font-weight: 250;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--jb-text);
}

.page-faq .faq-hero__title span {
  display: inline-block;
  padding: 0 .16em;
  background: linear-gradient(135deg, var(--jb-cyan), var(--jb-mist));
  color: var(--jb-ink);
  font-weight: 800;
  letter-spacing: -.02em;
  clip-path: polygon(4% 0, 100% 6%, 96% 100%, 0 94%);
}

.page-faq .faq-hero__lede {
  max-width: 44ch;
  margin: 0 0 26px;
  font-size: 17px;
  line-height: 1.78;
  color: var(--jb-text-dim);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-hero__jump a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border: 2px solid var(--jb-line);
  border-radius: var(--jb-pill);
  font-size: 13px;
  color: var(--jb-text-dim);
  text-decoration: none;
  transition: border-color .22s var(--jb-ease), color .22s var(--jb-ease), transform .22s var(--jb-ease);
}

.page-faq .faq-hero__jump a b {
  font-family: var(--jb-mono);
  font-weight: 600;
  color: var(--jb-cyan);
}

.page-faq .faq-hero__jump a:hover,
.page-faq .faq-hero__jump a:focus-visible {
  border-color: var(--jb-cyan);
  color: var(--jb-text);
  transform: translateY(-2px);
}

.page-faq .faq-hero__media {
  position: relative;
}

.page-faq .faq-hero__frame {
  border: 2px solid var(--jb-line);
  background: var(--jb-layer);
  box-shadow: var(--jb-hard-lg);
  clip-path: polygon(0 4%, 97% 0, 100% 95%, 3% 100%);
}

.page-faq .faq-hero__frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

/* ---------- 主体分栏 ---------- */

.page-faq .faq-main {
  padding-top: 52px;
  padding-bottom: 48px;
}

.page-faq .faq-main__grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-rail__title {
  margin: 0 0 14px;
  font-family: var(--jb-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--jb-text-mute);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-faq .faq-rail__item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 14px;
  border: 2px solid var(--jb-line);
  border-radius: var(--jb-pill);
  background: rgba(14, 26, 62, .6);
  font-size: 14px;
  color: var(--jb-text-dim);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .22s var(--jb-ease), color .22s var(--jb-ease), background .22s var(--jb-ease);
}

.page-faq .faq-rail__item b {
  font-family: var(--jb-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--jb-text-mute);
  transition: color .22s var(--jb-ease);
}

.page-faq .faq-rail__item:hover,
.page-faq .faq-rail__item:focus-visible {
  border-color: var(--jb-cyan);
  color: var(--jb-text);
  background: rgba(34, 211, 238, .09);
}

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

/* ---------- 分组 ---------- */

.page-faq .faq-groups {
  display: grid;
  gap: 44px;
}

.page-faq .faq-group {
  scroll-margin-top: 112px;
  padding-top: 22px;
  border-top: 2px solid var(--jb-line);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  margin-bottom: 20px;
}

.page-faq .faq-group__num {
  font-family: var(--jb-mono);
  font-size: clamp(34px, 5vw, 54px);
  font-weight: 200;
  line-height: .9;
  letter-spacing: -.05em;
  color: var(--jb-line);
  transition: color .3s var(--jb-ease);
}

.page-faq .faq-group:target .faq-group__num {
  color: var(--jb-cyan);
}

.page-faq .faq-group__title {
  margin: 0 0 8px;
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.02em;
  color: var(--jb-text);
}

.page-faq .faq-group__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--jb-text-mute);
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-acc {
  display: grid;
  gap: 10px;
}

.page-faq .faq-acc .jb-acc {
  border: 2px solid var(--jb-line);
  border-radius: var(--jb-radius);
  background: var(--jb-layer);
  box-shadow: var(--jb-hard-sm);
  transition: border-color .22s var(--jb-ease), box-shadow .22s var(--jb-ease), transform .22s var(--jb-ease);
}

.page-faq .faq-acc .jb-acc:hover {
  border-color: var(--jb-cyan);
  transform: translateY(-2px);
  box-shadow: var(--jb-hard);
}

.page-faq .faq-acc .jb-acc[data-open] {
  border-color: var(--jb-cyan);
  box-shadow: var(--jb-hard);
}

.page-faq .faq-acc__trigger {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.page-faq .faq-acc__trigger:focus-visible {
  outline: 2px solid var(--jb-cyan);
  outline-offset: -4px;
}

.page-faq .faq-acc__q {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--jb-text);
}

.page-faq .faq-acc__icon {
  flex: 0 0 auto;
  color: var(--jb-cyan);
}

.page-faq .faq-acc__panel {
  padding: 0 18px;
}

.page-faq .faq-acc__panel p {
  margin: 0;
  padding-bottom: 18px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--jb-text-dim);
}

.page-faq .faq-acc__panel a {
  color: var(--jb-mist);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 订阅三步 ---------- */

.page-faq .faq-steps {
  margin-bottom: 16px;
  padding: 18px;
  border: 2px solid var(--jb-line);
  border-radius: var(--jb-radius);
  background: linear-gradient(135deg, rgba(34, 211, 238, .1), rgba(6, 11, 30, .9) 52%, rgba(245, 194, 75, .1));
  box-shadow: var(--jb-hard);
}

.page-faq .faq-steps__label {
  margin: 0 0 14px;
  font-family: var(--jb-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--jb-gold);
}

.page-faq .faq-steps__bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.page-faq .faq-step {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border: 2px solid var(--jb-line);
  border-radius: var(--jb-pill);
  background: rgba(6, 11, 30, .7);
  color: var(--jb-text-dim);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color .2s var(--jb-ease), color .2s var(--jb-ease), background .2s var(--jb-ease);
}

.page-faq .faq-step__num {
  font-family: var(--jb-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--jb-gold);
}

.page-faq .faq-step:hover {
  border-color: var(--jb-cyan);
  color: var(--jb-text);
}

.page-faq .faq-step.is-active {
  border-color: var(--jb-cyan);
  background: rgba(34, 211, 238, .12);
  color: var(--jb-text);
}

.page-faq .faq-steps__track {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  margin: 16px 0 14px;
}

.page-faq .faq-steps__track span {
  height: 4px;
  border-radius: var(--jb-pill);
  background: linear-gradient(90deg, var(--jb-gold), rgba(245, 194, 75, .3));
}

.page-faq .faq-step-panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--jb-text-dim);
}

.page-faq .faq-step-panel strong {
  color: var(--jb-gold);
  font-weight: 700;
}

/* ---------- 分组配图 ---------- */

.page-faq .faq-group__media {
  margin: 0 0 18px;
}

.page-faq .faq-group__media .jb-frame {
  display: block;
  border: 2px solid var(--jb-line);
  border-radius: var(--jb-radius);
  background: var(--jb-layer);
  box-shadow: var(--jb-hard-sm);
  overflow: hidden;
}

.page-faq .faq-group__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 收束区 ---------- */

.page-faq .faq-outro {
  padding-top: 20px;
  padding-bottom: 72px;
}

.page-faq .faq-outro__panel {
  position: relative;
  padding: 28px 22px;
  border: 2px solid var(--jb-line);
  border-radius: var(--jb-radius);
  background:
    linear-gradient(135deg, rgba(34, 211, 238, .14), rgba(14, 26, 62, .97) 48%, rgba(229, 37, 123, .16));
  box-shadow: var(--jb-hard-lg);
  overflow: hidden;
}

.page-faq .faq-outro__panel::after {
  content: "";
  position: absolute;
  top: -40px;
  right: -60px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(34, 211, 238, .22), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-outro__kicker {
  margin: 0 0 10px;
  font-family: var(--jb-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--jb-cyan);
}

.page-faq .faq-outro__title {
  position: relative;
  margin: 0 0 12px;
  font-size: clamp(22px, 3.4vw, 34px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.02em;
  color: var(--jb-text);
}

.page-faq .faq-outro__text {
  position: relative;
  max-width: 56ch;
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--jb-text-dim);
}

.page-faq .faq-outro__actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.page-faq .faq-outro__facts {
  position: relative;
  display: grid;
  gap: 14px;
  margin: 0;
  padding-top: 20px;
  border-top: 2px solid var(--jb-line);
}

.page-faq .faq-outro__facts dt {
  margin-bottom: 5px;
  font-family: var(--jb-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--jb-text-mute);
}

.page-faq .faq-outro__facts dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--jb-text);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding-top: 40px;
    padding-bottom: 104px;
  }

  .page-faq .faq-main {
    padding-top: 64px;
  }

  .page-faq .faq-outro__panel {
    padding: 40px 36px;
  }

  .page-faq .faq-outro__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 52px;
  }

  .page-faq .faq-main__grid {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 112px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__item {
    border-radius: 0 var(--jb-radius) var(--jb-radius) 0;
    border-left-width: 3px;
    padding: 11px 14px;
  }

  .page-faq .faq-rail__item b {
    font-size: 14px;
    font-weight: 300;
  }

  .page-faq .faq-group {
    padding-top: 26px;
  }

  .page-faq .faq-group__head {
    gap: 22px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-groups {
    gap: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__jump a,
  .page-faq .faq-rail__item,
  .page-faq .faq-acc .jb-acc,
  .page-faq .faq-step {
    transition: none;
  }
}
</main>