.page-faq {
  --faq-band-min: 96px;
  --faq-num-w: 42px;
  background: var(--c-cream);
  color: var(--c-ink);
  overflow-x: hidden;
}

.page-faq .eyebrow {
  margin: 0 0 10px;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 18px 0 44px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -6%;
  right: 0;
  bottom: -6%;
  width: 100%;
  background: linear-gradient(158deg, var(--c-lilac) 0%, #ded3f8 62%, var(--c-glow) 118%);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  opacity: .55;
  z-index: -1;
}

.page-faq .faq-hero__inner {
  position: relative;
  max-width: var(--wrap);
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-5);
  line-height: 1.2;
  letter-spacing: -.02em;
  margin: 0;
  color: var(--c-indigo);
  max-width: 20em;
}

.page-faq .faq-hero__lead {
  margin: 14px 0 0;
  font-size: var(--fs-3);
  line-height: 1.75;
  max-width: 34em;
  color: var(--c-ink);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-hero__note {
  display: none;
}

/* 导览图 */
.page-faq .faq-map {
  margin: 0 0 22px;
}

.page-faq .faq-map__fig {
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-lilac);
  box-shadow: var(--shadow);
}

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

.page-faq .faq-map__fig img {
  aspect-ratio: 5 / 3;
}

.page-faq .faq-map__cap {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  color: var(--c-muted);
  line-height: 1.6;
}

/* 四组图例 */
.page-faq .faq-map__index {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 0 0 4px;
}

.page-faq .faq-map__link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--c-cream);
  color: var(--c-ink);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: border-color .16s var(--ease), background .16s var(--ease);
}

.page-faq .faq-map__link:hover,
.page-faq .faq-map__link:focus-visible,
.page-faq .faq-map__link[aria-current] {
  border-left-color: var(--c-orange);
  background: var(--c-lilac);
}

.page-faq .faq-map__num {
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  font-weight: 500;
  color: var(--c-purple);
}

.page-faq .faq-map__name {
  font-size: var(--fs-2);
  font-weight: 600;
}

.page-faq .faq-map__count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-muted);
}

/* 筛选 */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  padding: 20px 0 6px;
  border-bottom: 1px solid var(--c-line);
  margin-bottom: 6px;
  scrollbar-width: thin;
}

.page-faq .faq-filter .filter-btn {
  flex: none;
  font-family: var(--font-body);
  font-size: var(--fs-2);
  line-height: 1.2;
  padding: 8px 15px;
  border-radius: 999px;
  border: 1px solid var(--c-line);
  background: #fff;
  color: var(--c-ink);
  cursor: pointer;
  white-space: nowrap;
  transition: color .16s var(--ease), border-color .16s var(--ease), background .16s var(--ease);
}

.page-faq .faq-filter .filter-btn:hover,
.page-faq .faq-filter .filter-btn:focus-visible {
  border-color: var(--c-purple);
  color: var(--c-purple);
}

.page-faq .faq-filter .filter-btn[aria-pressed="true"] {
  background: var(--c-purple);
  border-color: var(--c-purple);
  color: #fff;
}

.page-faq [data-filter-item][data-filtered="true"] {
  opacity: .2;
  pointer-events: none;
}

/* 分组 */
.page-faq .faq-group {
  padding: 34px 0 10px;
  scroll-margin-top: 88px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 6px;
  align-items: start;
  margin-bottom: 18px;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: var(--fs-4);
  font-weight: 700;
  line-height: 1;
  color: var(--c-purple);
  padding-top: 3px;
}

.page-faq .faq-group__num::after {
  content: "";
  display: block;
  height: 3px;
  margin-top: 7px;
  border-radius: 2px;
  background: var(--c-orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-4);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--c-indigo);
}

.page-faq .faq-group__lead {
  grid-column: 2;
  margin: 0;
  font-size: var(--fs-2);
  line-height: 1.7;
  color: var(--c-muted);
  max-width: 34em;
}

/* 折叠条目 */
.page-faq .faq-list {
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--c-line);
  background: transparent;
  transition: background .2s var(--ease);
}

.page-faq .faq-item[open] {
  background: linear-gradient(180deg, rgba(238, 233, 247, .6), rgba(238, 233, 247, 0));
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 2px;
  cursor: pointer;
  list-style: none;
  outline-offset: 2px;
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item__id {
  flex: none;
  min-width: var(--faq-num-w);
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  font-weight: 500;
  color: var(--c-muted);
}

.page-faq .faq-item__q {
  flex: 1;
  font-size: var(--fs-3);
  font-weight: 600;
  line-height: 1.55;
  transition: color .16s var(--ease);
}

.page-faq .faq-item > summary:hover .faq-item__q {
  color: var(--c-purple);
}

.page-faq .faq-item__mark {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 6px;
  transition: transform .2s var(--ease);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--c-purple);
  border-radius: 1px;
}

.page-faq .faq-item__mark::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 2px;
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(45deg);
}

.page-faq .faq-item__a {
  margin: 0 0 16px calc(var(--faq-num-w) + 12px);
  padding: 2px 0 2px 14px;
  border-left: 3px solid var(--c-line);
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: var(--fs-3);
  line-height: 1.75;
  max-width: 34em;
  color: var(--c-ink);
}

.page-faq .faq-item__anchor {
  display: inline-block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-muted);
  text-decoration: none;
  border-bottom: 1px dashed var(--c-line);
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.page-faq .faq-item__anchor:hover,
.page-faq .faq-item__anchor:focus-visible {
  color: var(--c-purple);
  border-bottom-color: var(--c-purple);
}

/* 章节间色带 */
.page-faq .faq-band {
  position: relative;
  min-height: var(--faq-band-min);
  display: flex;
  align-items: center;
  background: linear-gradient(96deg, var(--c-purple) 0 60%, var(--c-indigo) 60% 100%);
  color: #fff;
  overflow: hidden;
}

.page-faq .faq-band--alt {
  background: linear-gradient(96deg, var(--c-indigo) 0 46%, var(--c-purple) 46% 100%);
}

.page-faq .faq-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(115deg, rgba(255, 255, 255, .07) 0 2px, transparent 2px 16px);
  pointer-events: none;
}

.page-faq .faq-band__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  padding: 22px 0;
}

.page-faq .faq-band__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-2);
  letter-spacing: .04em;
  color: rgba(255, 255, 255, .92);
}

.page-faq .faq-band__link {
  font-size: var(--fs-2);
  color: #fff;
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(255, 255, 255, .55);
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.page-faq .faq-band__link:hover,
.page-faq .faq-band__link:focus-visible {
  color: var(--c-orange);
  border-bottom-color: var(--c-orange);
}

/* 组内插图 */
.page-faq .faq-figure {
  margin: 0 0 20px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
}

.page-faq .faq-figure img {
  aspect-ratio: 3 / 2;
}

.page-faq .faq-figure .faq-map__cap {
  padding: 10px 14px 12px;
  margin: 0;
}

/* 收尾联系 */
.page-faq .faq-help {
  position: relative;
  margin: 46px 0 0;
  padding: 24px 20px 26px;
  border-radius: var(--radius);
  background: var(--c-indigo);
  color: #fff;
  overflow: hidden;
}

.page-faq .faq-help::before {
  content: "";
  position: absolute;
  right: -18%;
  top: -40%;
  width: 60%;
  height: 180%;
  background: linear-gradient(160deg, rgba(183, 155, 255, .35), rgba(183, 155, 255, 0));
  clip-path: polygon(28% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-help__text,
.page-faq .faq-help__channels {
  position: relative;
  z-index: 1;
}

.page-faq .faq-help__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-4);
  line-height: 1.3;
  color: #fff;
}

.page-faq .faq-help__lead {
  margin: 10px 0 16px;
  font-size: var(--fs-2);
  line-height: 1.75;
  max-width: 34em;
  color: rgba(255, 255, 255, .82);
}

.page-faq .faq-help__cta {
  display: inline-block;
}

.page-faq .faq-help__channels {
  margin-top: 24px;
  display: grid;
  gap: 14px;
}

.page-faq .faq-help__ch {
  display: grid;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, .18);
}

.page-faq .faq-help__key {
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: .06em;
  color: var(--c-glow);
}

.page-faq .faq-help__val {
  font-size: var(--fs-2);
  line-height: 1.6;
  color: #fff;
  word-break: break-word;
}

.page-faq .faq-help__hint {
  font-size: var(--fs-1);
  line-height: 1.6;
  color: rgba(255, 255, 255, .7);
}

.page-faq .faq-more {
  margin: 22px 0 56px;
  font-size: var(--fs-2);
  line-height: 1.7;
  color: var(--c-muted);
}

.page-faq .faq-more a {
  color: var(--c-purple);
  text-decoration: none;
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-more a:hover,
.page-faq .faq-more a:focus-visible {
  border-bottom-color: var(--c-purple);
}

.page-faq a:focus-visible,
.page-faq button:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--c-purple);
  outline-offset: 2px;
  border-radius: 4px;
}

/* 中等屏幕起 */
@media (min-width: 640px) {
  .page-faq .faq-map__index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-help {
    padding: 28px 26px 30px;
  }

  .page-faq .faq-help__channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 24px;
  }
}

@media (min-width: 900px) {
  .page-faq {
    --faq-num-w: 52px;
  }

  .page-faq .faq-hero {
    padding: 40px 0 72px;
  }

  .page-faq .faq-hero::before {
    width: 58%;
    clip-path: polygon(16% 0, 100% 0, 100% 100%, 0 100%);
    opacity: .9;
  }

  .page-faq .faq-hero__title {
    font-size: var(--fs-6);
    max-width: 16em;
  }

  .page-faq .faq-hero__note {
    display: block;
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    writing-mode: vertical-rl;
    margin: 0;
    font-family: var(--font-mono);
    font-size: var(--fs-1);
    letter-spacing: .22em;
    color: var(--c-indigo);
    opacity: .6;
  }

  .page-faq .faq-map__index {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-filter {
    flex-wrap: wrap;
    overflow-x: visible;
    padding: 24px 0 10px;
  }

  .page-faq .faq-group {
    padding: 48px 0 14px;
  }

  .page-faq .faq-group__head {
    column-gap: 22px;
    row-gap: 8px;
    margin-bottom: 24px;
  }

  .page-faq .faq-group__num {
    font-size: var(--fs-5);
  }

  .page-faq .faq-group__title {
    font-size: var(--fs-5);
  }

  .page-faq .faq-group__lead {
    font-size: var(--fs-3);
  }

  .page-faq .faq-item > summary {
    gap: 18px;
    padding: 16px 4px;
  }

  .page-faq .faq-item__a {
    margin-left: calc(var(--faq-num-w) + 18px);
    padding-left: 18px;
    margin-bottom: 20px;
  }

  .page-faq .faq-band__inner {
    padding: 30px 0;
  }

  .page-faq .faq-help {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 32px;
    padding: 36px 34px 38px;
    margin-top: 56px;
  }

  .page-faq .faq-help__channels {
    margin-top: 4px;
    align-content: start;
  }

  .page-faq .faq-more {
    margin-bottom: 72px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero {
    padding: 52px 0 84px;
  }

  .page-faq .faq-figure {
    margin-bottom: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
  }

  .page-faq .faq-item[open] .faq-item__mark {
    transform: rotate(45deg);
  }
}
<<<END>>>