.page-faq {
  --faq-line: rgba(255, 90, 31, 0.28);
  --faq-pad: clamp(48px, 8vw, 96px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(32px, 6vw, 64px) var(--faq-pad);
  overflow: hidden;
}
.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(28px, 6vw, 56px);
  align-items: center;
}
.page-faq .faq-hero .index-label {
  color: var(--jb-orange);
  border-bottom-color: rgba(255, 90, 31, 0.45);
}
.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.2vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: #fff;
  margin: 16px 0 18px;
  max-width: 16ch;
}
.page-faq .faq-hero__lead {
  color: var(--jb-silver);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  max-width: 60ch;
  margin: 0 0 26px;
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 4vw, 40px);
  margin: 34px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--jb-hairline-dark);
}
.page-faq .faq-hero__stat {
  margin: 0;
}
.page-faq .faq-hero__stat dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--jb-silver);
  margin-bottom: 6px;
}
.page-faq .faq-hero__stat dd {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 28px);
  color: #fff;
  letter-spacing: -0.01em;
}
.page-faq .faq-hero__stat dd .num {
  color: var(--jb-orange);
}
.page-faq .faq-hero__figure {
  margin: 0;
  max-width: 400px;
  justify-self: center;
  width: 100%;
  border-radius: 18px 18px 4px 18px;
  overflow: hidden;
  background: var(--jb-navy);
}
.page-faq .faq-hero__figure .media-frame__img,
.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-hero__figure .media-frame__caption {
  padding: 12px 16px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--jb-silver);
  background: var(--jb-navy);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 64px;
  }
  .page-faq .faq-hero__figure {
    justify-self: end;
    max-width: 360px;
  }
}

/* ---------- 粘性三步进度 ---------- */
.page-faq .faq-rail {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--jb-navy);
  border-top: 1px solid var(--jb-hairline-dark);
  border-bottom: 1px solid var(--jb-hairline-dark);
  box-shadow: 0 10px 26px rgba(11, 22, 34, 0.28);
}
.page-faq .faq-rail__inner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-block: 10px;
  flex-wrap: wrap;
}
.page-faq .faq-rail__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--jb-silver);
  padding-right: 12px;
  border-right: 1px solid var(--jb-hairline-dark);
  flex: 0 0 auto;
}
.page-faq .faq-rail__list {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.page-faq .faq-rail__list::-webkit-scrollbar {
  display: none;
}
.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  color: var(--jb-silver);
  text-decoration: none;
  border: 1px solid transparent;
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease;
}
.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: #fff;
  border-color: var(--jb-steel);
}
.page-faq .faq-rail__link[aria-current="true"] {
  color: #fff;
  background: rgba(255, 90, 31, 0.14);
  border-color: var(--faq-line);
}
.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--jb-orange);
  letter-spacing: 0;
}
.page-faq .faq-rail__link[aria-current="true"] .faq-rail__num {
  color: var(--jb-orange);
}
.page-faq .faq-rail__cta {
  flex: 0 0 auto;
}
@media (max-width: 720px) {
  .page-faq .faq-rail__label {
    display: none;
  }
  .page-faq .faq-rail__cta {
    display: none;
  }
}

/* ---------- 步骤折叠区 ---------- */
.page-faq .faq-steps__list {
  display: grid;
  gap: 14px;
  margin-top: 34px;
}
.page-faq .faq-step {
  border: 1px solid var(--jb-hairline);
  border-left: 3px solid transparent;
  border-radius: 4px 18px 18px 18px;
  background: #fff;
  scroll-margin-top: 96px;
  transition: border-color 200ms ease, box-shadow 200ms ease;
}
.page-faq .faq-step[data-open] {
  border-left-color: var(--jb-orange);
  box-shadow: 0 14px 32px rgba(11, 22, 34, 0.09);
}
.page-faq .faq-step .fold__head {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px clamp(16px, 3vw, 26px);
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
  color: var(--jb-ink);
  font: inherit;
}
.page-faq .faq-step .fold__head:focus-visible {
  outline: 2px solid var(--jb-green);
  outline-offset: -3px;
}
.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 500;
  color: var(--jb-orange);
  line-height: 1;
  flex: 0 0 auto;
}
.page-faq .faq-step .fold__title {
  flex: 1 1 auto;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.4vw, 24px);
  letter-spacing: -0.01em;
}
.page-faq .faq-step .fold__state {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--jb-body);
  white-space: nowrap;
  flex: 0 0 auto;
}
.page-faq .faq-step .fold__sign {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--jb-mist);
  color: var(--jb-orange);
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
}
.page-faq .faq-step .fold__body {
  padding: 0 clamp(16px, 3vw, 26px) 22px;
}
.page-faq .faq-step__text {
  margin: 0 0 16px;
  max-width: 72ch;
  color: var(--jb-body);
  line-height: 1.85;
}
.page-faq .faq-step__figure {
  margin: 20px 0 22px;
  border-radius: 4px 18px 18px 18px;
  overflow: hidden;
  background: var(--jb-archive);
  max-width: 640px;
}
.page-faq .faq-step__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-step__figure .media-frame__caption {
  padding: 10px 16px 12px;
  font-size: 12px;
  color: var(--jb-navy);
  background: var(--jb-archive);
}

.page-faq .faq-checklist {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-faq .faq-checklist li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--jb-body);
}
.page-faq .faq-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 12px;
  height: 2px;
  background: var(--jb-orange);
}

.page-faq .faq-step .note {
  border-left: 2px solid var(--jb-orange);
  padding: 4px 0 4px 16px;
  max-width: 68ch;
}
.page-faq .faq-step .note__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--jb-orange);
  margin-bottom: 6px;
}
.page-faq .faq-step .note p {
  margin: 0;
  font-size: 15px;
  color: var(--jb-ink);
  line-height: 1.75;
}

/* ---------- 换机区块 ---------- */
.page-faq .faq-swap__slab {
  padding: clamp(24px, 4vw, 44px);
  border-radius: 4px 28px 28px 28px;
  background: var(--jb-archive);
}
.page-faq .faq-swap__grid {
  gap: clamp(24px, 4vw, 40px);
}
.page-faq .faq-swap .index-label {
  color: var(--jb-orange-dark);
  border-bottom-color: rgba(185, 58, 13, 0.4);
}
.page-faq .faq-swap__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--jb-ink);
  margin: 14px 0 16px;
}
.page-faq .faq-swap p {
  color: #3b4a58;
  line-height: 1.85;
  max-width: 66ch;
}
.page-faq .faq-swap__reasons {
  list-style: none;
  margin: 20px 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .faq-swap__reasons li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 15px;
  line-height: 1.75;
  color: var(--jb-ink);
}
.page-faq .faq-swap__reasons .num {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--jb-navy);
  color: #fff;
  font-size: 13px;
  margin-top: 2px;
}
.page-faq .faq-swap__tail {
  margin: 0;
}
.page-faq .faq-swap__side {
  display: grid;
  gap: 16px;
  align-content: start;
}
.page-faq .faq-swap__card {
  background: rgba(11, 22, 34, 0.92);
  border-radius: 4px 18px 18px 18px;
  padding: 22px 24px;
}
.page-faq .faq-swap__card-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--jb-orange);
  margin: 0 0 14px;
}
.page-faq .faq-swap__card-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .faq-swap__card-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--jb-mist);
}
.page-faq .faq-swap__card-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--jb-green);
}
.page-faq .faq-swap__link {
  margin: 0;
  font-size: 14px;
}
.page-faq .faq-swap__link a {
  color: var(--jb-orange-dark);
  text-decoration: none;
  border-bottom: 1px solid rgba(185, 58, 13, 0.35);
  padding-bottom: 2px;
}
.page-faq .faq-swap__link a:hover {
  border-bottom-color: var(--jb-orange-dark);
}

/* ---------- 排查表 ---------- */
.page-faq .faq-filter {
  margin: 26px 0 18px;
  flex-wrap: wrap;
  gap: 8px;
}
.page-faq .faq-filter .filter-btn {
  border-radius: var(--radius-pill);
  border: 1px solid var(--jb-hairline);
  background: #fff;
  color: var(--jb-body);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  cursor: pointer;
  transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease;
}
.page-faq .faq-filter .filter-btn:hover {
  border-color: var(--jb-steel);
  color: var(--jb-ink);
}
.page-faq .faq-filter .filter-btn[aria-pressed="true"] {
  background: var(--jb-ink);
  border-color: var(--jb-ink);
  color: #fff;
}
.page-faq .faq-filter .filter-btn:focus-visible {
  outline: 2px solid var(--jb-green);
  outline-offset: 2px;
}

.page-faq .faq-table__wrap {
  overflow-x: auto;
  border: 1px solid var(--jb-hairline);
  border-radius: 4px 18px 18px 18px;
  background: #fff;
}
.page-faq .faq-table__caption {
  caption-side: top;
  text-align: left;
  padding: 16px 20px 14px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--jb-body);
  background: var(--jb-mist);
  border-bottom: 1px solid var(--jb-hairline);
}
.page-faq .faq-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: 14.5px;
}
.page-faq .faq-table thead th {
  background: var(--jb-navy);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: left;
  padding: 13px 18px;
  font-weight: 500;
}
.page-faq .faq-table tbody tr {
  border-bottom: 1px solid var(--jb-hairline);
  cursor: pointer;
  transition: background-color 160ms ease;
}
.page-faq .faq-table tbody tr:last-child {
  border-bottom: 0;
}
.page-faq .faq-table tbody tr:hover,
.page-faq .faq-table tbody tr:focus-within {
  background: rgba(255, 90, 31, 0.06);
}
.page-faq .faq-table tbody tr.is-copied {
  background: rgba(47, 191, 113, 0.12);
}
.page-faq .faq-table tbody th[scope="row"] {
  text-align: left;
  padding: 15px 18px;
  font-weight: 600;
  color: var(--jb-ink);
  white-space: normal;
  min-width: 170px;
}
.page-faq .faq-table tbody td {
  padding: 15px 18px;
  color: var(--jb-body);
  line-height: 1.7;
  border-left: 1px solid var(--jb-hairline);
}
.page-faq .faq-table tbody td:last-child {
  color: var(--jb-ink);
}

/* ---------- 分支判断 ---------- */
.page-faq .faq-empty__list {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}
.page-faq .faq-empty__item {
  border: 1px solid var(--jb-hairline);
  border-radius: 4px 16px 16px 16px;
  background: #fff;
  transition: border-color 180ms ease;
}
.page-faq .faq-empty__item[data-open] {
  border-color: var(--jb-steel);
}
.page-faq .faq-empty__item .fold__head {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px clamp(14px, 3vw, 22px);
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
  color: var(--jb-ink);
  font: inherit;
}
.page-faq .faq-empty__item .fold__head:focus-visible {
  outline: 2px solid var(--jb-green);
  outline-offset: -3px;
}
.page-faq .faq-empty__item .fold__title {
  flex: 1 1 auto;
  font-size: 15.5px;
  font-weight: 600;
}
.page-faq .faq-empty__item .fold__state {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--jb-body);
  white-space: nowrap;
}
.page-faq .faq-empty__item .fold__sign {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  border: 1px solid var(--jb-hairline);
  color: var(--jb-orange);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
}
.page-faq .faq-empty__item .fold__body {
  padding: 0 clamp(14px, 3vw, 22px) 18px;
}
.page-faq .faq-empty__item .fold__inner {
  border-top: 1px dashed var(--jb-hairline);
  padding-top: 14px;
}
.page-faq .faq-empty__item p {
  margin: 0;
  max-width: 72ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--jb-body);
}

/* ---------- 版本时间线 ---------- */
.page-faq .faq-timeline {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.page-faq .faq-timeline__node {
  position: relative;
  padding: 18px 20px 18px 54px;
  border-radius: 4px 16px 16px 16px;
  background: rgba(11, 22, 34, 0.5);
  border: 1px solid var(--jb-hairline-dark);
}
.page-faq .faq-timeline__node::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--jb-amber);
  box-shadow: 0 0 0 4px rgba(242, 176, 30, 0.14);
}
.page-faq .faq-timeline__node::after {
  content: "";
  position: absolute;
  left: 25px;
  top: 42px;
  bottom: -16px;
  width: 1px;
  background: var(--jb-hairline-dark);
}
.page-faq .faq-timeline__node:last-child::after {
  display: none;
}
.page-faq .faq-timeline__node[data-current] {
  background: rgba(255, 90, 31, 0.1);
  border-color: var(--faq-line);
}
.page-faq .faq-timeline__node[data-current]::before {
  background: var(--jb-orange);
  box-shadow: 0 0 0 5px rgba(255, 90, 31, 0.18);
}
.page-faq .faq-timeline__ver {
  display: block;
  font-size: 15px;
  color: var(--jb-orange);
  margin-bottom: 6px;
}
.page-faq .faq-timeline__name {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: #fff;
  margin-bottom: 6px;
}
.page-faq .faq-timeline__desc {
  display: block;
  font-size: 14px;
  line-height: 1.75;
  color: var(--jb-silver);
  max-width: 62ch;
}
.page-faq .faq-version__foot {
  margin: 26px 0 0;
  font-size: 14px;
  color: var(--jb-silver);
  line-height: 1.8;
}
.page-faq .faq-version__foot a {
  color: var(--jb-orange);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .faq-version__foot a:hover {
  border-bottom-color: var(--jb-orange);
}

@media (min-width: 900px) {
  .page-faq .faq-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }
  .page-faq .faq-timeline__node {
    padding: 52px 18px 20px;
  }
  .page-faq .faq-timeline__node::before {
    left: 18px;
    top: 22px;
  }
  .page-faq .faq-timeline__node::after {
    left: 30px;
    right: -14px;
    top: 27px;
    bottom: auto;
    width: auto;
    height: 1px;
  }
  .page-faq .faq-timeline__node:last-child::after {
    display: none;
  }
}

/* ---------- 版本说明与费用分档 ---------- */
.page-faq .faq-costline__grid {
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}
.page-faq .faq-costline .index-label {
  color: var(--jb-orange-dark);
  border-bottom-color: rgba(185, 58, 13, 0.4);
}
.page-faq .faq-costline__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: -0.015em;
  color: var(--jb-ink);
  margin: 14px 0 16px;
}
.page-faq .faq-costline p {
  color: var(--jb-body);
  line-height: 1.85;
  max-width: 68ch;
}
.page-faq .faq-costline__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
}
.page-faq .faq-costline__note {
  border: 1px solid var(--jb-hairline);
  border-left: 3px solid var(--jb-amber);
  border-radius: 4px 16px 16px 16px;
  background: #fff;
  padding: 20px 22px;
}
.page-faq .faq-costline__note-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--jb-orange-dark);
  margin: 0 0 10px;
}
.page-faq .faq-costline__note p {
  margin: 0;
  font-size: 14px;
}
.page-faq .faq-costline__note a {
  color: var(--jb-orange-dark);
  text-decoration: none;
  border-bottom: 1px solid rgba(185, 58, 13, 0.35);
}

/* ---------- 咨询 ---------- */
.page-faq .faq-help {
  padding-block: var(--faq-pad);
}
.page-faq .faq-help__inner {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
  align-items: start;
}
.page-faq .faq-help .index-label {
  color: var(--jb-orange);
  border-bottom-color: var(--faq-line);
}
.page-faq .faq-help__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, 34px);
  letter-spacing: -0.018em;
  color: #fff;
  margin: 14px 0 18px;
  max-width: 20ch;
}
.page-faq .faq-help__copy p {
  color: var(--jb-silver);
  line-height: 1.85;
  max-width: 62ch;
  margin: 0 0 22px;
}
.page-faq .faq-help__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .faq-help__list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--jb-mist);
}
.page-faq .faq-help__list .num {
  flex: 0 0 auto;
  font-size: 13px;
  color: var(--jb-orange);
  margin-top: 3px;
}
.page-faq .faq-help__card {
  background: rgba(18, 38, 60, 0.86);
  border: 1px solid var(--jb-hairline-dark);
  border-radius: 4px 22px 22px 22px;
  padding: clamp(22px, 3.5vw, 32px);
}
.page-faq .faq-help__card-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--jb-green);
  margin: 0 0 18px;
}
.page-faq .faq-help__contact {
  display: grid;
  gap: 16px;
  margin: 0;
}
.page-faq .faq-help__contact dt {
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--jb-silver);
  font-family: var(--font-mono);
  margin-bottom: 5px;
}
.page-faq .faq-help__contact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  color: #fff;
  line-height: 1.6;
  word-break: break-word;
}
.page-faq .faq-help__contact dd a {
  color: #fff;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 90, 31, 0.45);
  padding-bottom: 1px;
}
.page-faq .faq-help__contact dd a:hover {
  color: var(--jb-orange);
}
.page-faq .faq-help__hint {
  margin: 20px 0 22px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--jb-silver);
}
.page-faq .faq-help__btn {
  width: 100%;
  justify-content: center;
}

@media (min-width: 900px) {
  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 56px;
  }
}

/* ---------- 返回顶部 ---------- */
.page-faq .to-top {
  position: fixed;
  right: clamp(16px, 3vw, 32px);
  bottom: clamp(16px, 3vw, 32px);
  z-index: 40;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--jb-orange);
  color: #fff;
  font-size: 18px;
  text-decoration: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 200ms ease, transform 200ms ease, visibility 200ms ease;
}
.page-faq .to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.page-faq .to-top:focus-visible {
  outline: 2px solid var(--jb-green);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .to-top,
  .page-faq .faq-step,
  .page-faq .faq-empty__item,
  .page-faq .faq-rail__link {
    transition: none;
  }
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 560px) {
  .page-faq .faq-hero__stats {
    gap: 18px 26px;
  }
  .page-faq .faq-step .fold__head {
    flex-wrap: wrap;
    gap: 8px 12px;
  }
  .page-faq .faq-step .fold__state {
    order: 3;
    width: 100%;
    padding-left: 36px;
  }
  .page-faq .faq-empty__item .fold__head {
    flex-wrap: wrap;
    gap: 8px 10px;
  }
  .page-faq .faq-empty__item .fold__state {
    order: 3;
    width: 100%;
    padding-left: 34px;
  }
}
<<<END>>>