.page-faq {
  --faq-line: var(--steel);
  padding-bottom: calc(var(--unit) * 12);
}

.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--unit) * 6) 0 calc(var(--unit) * 5);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: 8%;
  bottom: -1px;
  width: 120px;
  height: 3px;
  background: var(--orange);
  transform: skewX(-28deg);
  transform-origin: right bottom;
}

.page-faq .faq-hero__title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 8vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-faq .faq-hero__lead {
  max-width: 62ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ash);
}

/* 快速定位条带 */
.page-faq .faq-jump {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin-top: calc(var(--unit) * 4);
  border: 1px solid var(--faq-line);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-jump__label {
  display: flex;
  align-items: center;
  padding: 10px 14px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--smoke);
  background: var(--night);
  white-space: nowrap;
  border-right: 1px solid var(--faq-line);
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--fog);
  text-decoration: none;
  white-space: nowrap;
  border-right: 1px solid var(--faq-line);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-jump__link .mono {
  font-size: 12px;
  color: var(--cyan);
}

.page-faq .faq-jump__count {
  font-size: 12px;
  color: var(--smoke);
}

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

.page-faq .faq-jump__link:hover .faq-jump__count,
.page-faq .faq-jump__link:focus-visible .faq-jump__count {
  color: var(--fog);
}

/* 双栏 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: calc(var(--unit) * 5);
  margin-top: calc(var(--unit) * 6);
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--smoke);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__list a {
  display: grid;
  grid-template-columns: auto auto auto;
  align-items: baseline;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--faq-line);
  color: var(--fog);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-index__num {
  font-size: 12px;
  color: var(--cyan);
}

.page-faq .faq-index__name {
  font-size: 14px;
}

.page-faq .faq-index__count {
  font-size: 12px;
  color: var(--smoke);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: var(--card);
  border-color: var(--cyan);
}

.page-faq .faq-index__help {
  margin-top: calc(var(--unit) * 3);
  padding-top: calc(var(--unit) * 3);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-index__help p {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--ash);
}

/* 分组 */
.page-faq .faq-group {
  padding-top: calc(var(--unit) * 5);
  border-top: 1px solid var(--faq-line);
  scroll-margin-top: 96px;
}

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

.page-faq .faq-group:target .faq-group__head {
  border-left: 3px solid var(--cyan);
  padding-left: 14px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 14px;
  margin-bottom: calc(var(--unit) * 3);
}

.page-faq .faq-group__num {
  grid-row: span 2;
  font-size: clamp(28px, 6vw, 44px);
  font-weight: 500;
  line-height: 1;
  color: var(--cyan);
  opacity: 0.85;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 4.5vw, 32px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-faq .faq-group__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ash);
}

/* 手风琴 */
.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid var(--faq-line);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  background: var(--night);
}

.page-faq .faq-item[open] {
  background: var(--night);
}

.page-faq .faq-item[open]::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--cyan);
}

.page-faq .faq-item__q {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 16px 42px 16px 14px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--fog);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q::after {
  content: "";
  position: absolute;
  right: 16px;
  top: 24px;
  width: 7px;
  height: 7px;
  border-top: 2px solid var(--ash);
  border-right: 2px solid var(--ash);
  transform: rotate(-45deg);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(45deg);
  border-color: var(--cyan);
}

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

.page-faq .faq-item__marker {
  flex: none;
  font-size: 12px;
  color: var(--smoke);
}

.page-faq .faq-item[open] .faq-item__marker {
  color: var(--cyan);
}

.page-faq .faq-item__a {
  padding: 0 20px 20px 38px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ash);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 60ch;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  counter-reset: faqstep;
  display: grid;
  gap: 8px;
  max-width: 60ch;
}

.page-faq .faq-steps li {
  position: relative;
  padding-left: 42px;
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .faq-inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 208, 0.45);
}

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

/* 图片 */
.page-faq .faq-figure,
.page-faq .faq-band {
  margin: calc(var(--unit) * 4) 0 0;
}

.page-faq .faq-band {
  margin-top: calc(var(--unit) * 5);
  margin-bottom: calc(var(--unit) * 5);
}

.page-faq .faq-figure img,
.page-faq .faq-band img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05);
}

/* 收尾 */
.page-faq .faq-tail {
  margin-top: calc(var(--unit) * 5);
  padding: calc(var(--unit) * 4);
  background: var(--card);
  border-left: 3px solid var(--orange);
}

.page-faq .faq-tail__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--fog);
}

.page-faq .faq-tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 720px) {
  .page-faq .faq-item__q {
    font-size: 17px;
    padding: 18px 48px 18px 16px;
  }

  .page-faq .faq-item__a {
    padding: 0 40px 22px 46px;
    font-size: 16px;
  }

  .page-faq .faq-hero {
    padding-top: calc(var(--unit) * 8);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 252px minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-index__list {
    display: block;
    overflow: visible;
    border-top: 1px solid var(--faq-line);
  }

  .page-faq .faq-index__list li {
    border-bottom: 1px solid var(--faq-line);
  }

  .page-faq .faq-index__list a {
    grid-template-columns: 28px minmax(0, 1fr) auto;
    border: 0;
    padding: 12px 6px;
  }

  .page-faq .faq-index__name {
    white-space: normal;
    line-height: 1.45;
  }

  .page-faq .faq-group__head {
    gap: 6px 20px;
  }

  .page-faq .faq-jump {
    overflow: visible;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__q::after,
  .page-faq .faq-jump__link,
  .page-faq .faq-index__list a {
    transition: none;
  }
}
<<<END>>>