.page-faq {
  --faq-index-w: 216px;
  background-image:
    linear-gradient(to right, rgba(27, 42, 62, .45) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 42, 62, .45) 1px, transparent 1px);
  background-size: 96px 96px;
  background-position: center top;
  padding-bottom: 72px;
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: 34px 40px;
  border-bottom: var(--hair);
}

.page-faq .breadcrumb {
  font-size: 12.5px;
  color: var(--c-grey);
  letter-spacing: .02em;
  margin-bottom: 22px;
}

.page-faq .breadcrumb a {
  color: var(--c-grey);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-faq .breadcrumb a:hover {
  color: var(--c-green);
}

.page-faq .breadcrumb__sep {
  margin: 0 8px;
  color: var(--c-line);
}

.page-faq .faq-hero .kicker {
  color: var(--c-orange);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(30px, 6.2vw, 54px);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--c-white);
  margin: 12px 0 0;
  max-width: 20ch;
}

.page-faq .faq-hero .lede {
  margin-top: 18px;
  max-width: 62ch;
  color: var(--c-silver);
}

.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 36px;
  margin: 26px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: var(--hair);
}

.page-faq .faq-stats .stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-stats .stat__label {
  font-size: 12.5px;
  color: var(--c-grey);
  letter-spacing: .06em;
}

.page-faq .faq-stats .stat__value {
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  color: var(--c-lime);
  letter-spacing: -.02em;
}

.page-faq .faq-stats .stat__unit {
  font-size: 12.5px;
  color: var(--c-grey);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  padding-top: 34px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

/* ---------- 场景索引 ---------- */
.page-faq .faq-index {
  border-top: 2px solid var(--c-green);
  padding-top: 12px;
}

.page-faq .faq-index__title {
  color: var(--c-grey);
  margin: 0 0 10px;
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 13px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: var(--c-panel);
  color: var(--c-silver);
  font-size: 13.5px;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-index__list a .mono {
  font-size: 12px;
  color: var(--c-orange);
  letter-spacing: .04em;
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--c-white);
  border-color: var(--c-green);
  background: var(--c-hi);
}

.page-faq .faq-index__list a:hover .mono,
.page-faq .faq-index__list a:focus-visible .mono {
  color: var(--c-green);
}

/* ---------- 场景区块 ---------- */
.page-faq .faq-scene {
  padding-block: 30px 40px;
  border-top: var(--hair);
  scroll-margin-top: 96px;
}

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

.page-faq .scene-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 12px;
}

.page-faq .scene-head__no {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--c-green);
  padding: 3px 8px;
  border: 1px solid rgba(0, 225, 140, .38);
  border-radius: 3px;
  background: rgba(0, 225, 140, .07);
}

.page-faq .scene-head h2 {
  font-family: var(--font-sans);
  font-weight: 900;
  font-stretch: condensed;
  font-size: clamp(22px, 3.6vw, 31px);
  letter-spacing: -.01em;
  line-height: 1.2;
  color: var(--c-white);
  margin: 0;
}

.page-faq .scene-lede {
  color: var(--c-grey);
  font-size: 15px;
  line-height: 1.7;
  margin: 0 0 20px;
  max-width: 60ch;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-items {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-item {
  border: 1px solid var(--c-line);
  border-left: 2px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-panel);
  box-shadow: var(--shadow);
  transition: border-color .22s var(--ease), background-color .22s var(--ease);
}

.page-faq .faq-item:hover {
  border-left-color: rgba(255, 106, 31, .75);
}

.page-faq .faq-item[open] {
  border-left-color: var(--c-green);
  background: var(--c-hi);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  transition: color .2s var(--ease);
}

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

.page-faq .faq-q__no {
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--c-orange);
  padding-top: 3px;
  transition: color .2s var(--ease);
}

.page-faq .faq-q__text {
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--c-white);
  transition: color .2s var(--ease);
}

.page-faq .faq-q:hover .faq-q__text,
.page-faq .faq-item[open] .faq-q__text {
  color: var(--c-green);
}

.page-faq .faq-item[open] .faq-q__no {
  color: var(--c-lime);
}

.page-faq .faq-q__sign {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 5px;
  flex: 0 0 auto;
}

.page-faq .faq-q__sign::before,
.page-faq .faq-q__sign::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 14px;
  height: 1.5px;
  background: var(--c-orange);
  transition: transform .24s var(--ease), background-color .24s var(--ease);
}

.page-faq .faq-q__sign::after {
  transform: rotate(90deg);
}

.page-faq .faq-item[open] .faq-q__sign::before,
.page-faq .faq-item[open] .faq-q__sign::after {
  background: var(--c-green);
}

.page-faq .faq-item[open] .faq-q__sign::after {
  transform: rotate(0deg);
}

.page-faq .faq-a {
  padding: 2px 16px 18px 16px;
  color: var(--c-silver);
  animation: faq-open .26s var(--ease) both;
}

@keyframes faq-open {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-a p {
  margin: 0 0 .95em;
  font-size: 15.5px;
  line-height: 1.78;
}

.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-a a,
.page-faq .scene-lede a,
.page-faq .faq-cta__body a {
  color: var(--c-cyan);
  text-decoration: none;
  padding-bottom: 1px;
  background-image: linear-gradient(var(--c-cyan), var(--c-cyan));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 1px;
  transition: background-size .28s var(--ease), color .2s var(--ease);
}

.page-faq .faq-a a:hover,
.page-faq .faq-a a:focus-visible,
.page-faq .scene-lede a:hover,
.page-faq .faq-cta__body a:hover {
  background-size: 100% 1px;
}

.page-faq .mark--green {
  background: rgba(0, 225, 140, .14);
  color: var(--c-green);
  font-weight: 700;
  padding: 0 3px;
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 0;
  border: var(--hair);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-panel);
}

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

.page-faq .faq-figure .figure-caption {
  padding: 10px 14px;
  border-top: var(--hair);
  color: var(--c-grey);
  margin: 0;
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  margin-top: 46px;
  padding: 26px 22px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  border: var(--hair);
  border-top: 2px solid var(--c-orange);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(255, 106, 31, .09), transparent 58%),
    var(--c-panel);
}

.page-faq .faq-cta__body .kicker {
  color: var(--c-orange);
}

.page-faq .faq-cta__body h2 {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(20px, 3.2vw, 27px);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--c-white);
  margin: 8px 0 10px;
}

.page-faq .faq-cta__body p {
  margin: 0;
  color: var(--c-silver);
  font-size: 15px;
  line-height: 1.75;
  max-width: 58ch;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.page-faq .faq-top-wrap {
  margin: 22px 0 0;
  text-align: right;
}

.page-faq .faq-top {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--c-grey);
  text-decoration: none;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  padding: 8px 16px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-top:hover,
.page-faq .faq-top:focus-visible {
  color: var(--c-green);
  border-color: var(--c-green);
}

/* ---------- 中屏 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding-block: 46px 52px;
  }

  .page-faq .faq-layout {
    padding-top: 42px;
    gap: 34px;
  }

  .page-faq .faq-q {
    padding: 17px 20px;
  }

  .page-faq .faq-a {
    padding: 2px 20px 20px 52px;
  }

  .page-faq .faq-cta {
    padding: 32px 30px;
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-faq .faq-cta__actions {
    justify-content: flex-end;
  }
}

/* ---------- 宽屏：左侧粘性索引 ---------- */
@media (min-width: 1040px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--c-line);
  }

  .page-faq .faq-index__list li {
    flex: 1 1 auto;
  }

  .page-faq .faq-index__list a {
    display: flex;
    width: 100%;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    padding: 10px 12px;
    margin-left: -1px;
    font-size: 14px;
    white-space: normal;
  }

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    border-left-color: var(--c-green);
    background: rgba(19, 39, 58, .7);
  }

  .page-faq .scene-lede {
    font-size: 15.5px;
  }

  .page-faq .faq-figure {
    margin-top: 26px;
  }
}
<<<END>>>