.page-faq {
  --faq-idx-w: 232px;
  --faq-soft: rgba(26, 29, 27, .64);
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(20px, 3.4vw, 34px) 0 clamp(46px, 7vw, 92px);
  background:
    radial-gradient(118% 88% at 84% 4%, rgba(28, 122, 104, .62), transparent 62%),
    radial-gradient(78% 62% at 6% 102%, rgba(47, 109, 164, .26), transparent 70%),
    linear-gradient(158deg, var(--jade-deep) 0%, var(--jade) 56%, #0a3d34 100%);
  color: var(--paper);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(245, 240, 230, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 240, 230, .05) 1px, transparent 1px);
  background-size: 62px 62px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), transparent 76%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__crumbs {
  margin-bottom: clamp(28px, 5vw, 56px);
}

.page-faq .faq-hero .breadcrumbs__item {
  color: rgba(245, 240, 230, .6);
  font-size: 13px;
}

.page-faq .faq-hero .breadcrumbs__link {
  color: rgba(245, 240, 230, .74);
  text-decoration: none;
  border-bottom: 1px solid rgba(245, 240, 230, .3);
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .faq-hero .breadcrumbs__link:hover {
  color: var(--copper);
  border-bottom-color: var(--copper);
}

.page-faq .faq-hero__label {
  color: var(--copper);
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.6vw, 72px);
  line-height: 1.14;
  letter-spacing: -.02em;
  text-shadow: 0 2px 24px rgba(7, 42, 37, .5);
}

.page-faq .faq-hero__lede {
  margin: 24px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.9;
  color: rgba(245, 240, 230, .84);
}

.page-faq .faq-hero__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(34px, 5vw, 54px);
  padding-top: clamp(22px, 3vw, 30px);
  border-top: 1px solid var(--line-copper);
}

.page-faq .faq-hero__cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-right: 10px;
}

.page-faq .faq-hero__cell-num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4.4vw, 44px);
  line-height: 1;
  color: var(--copper);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__cell-key {
  font-size: 12px;
  letter-spacing: .14em;
  color: rgba(245, 240, 230, .62);
}

/* ---------- 主体网格 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 44px);
  padding-top: clamp(36px, 5vw, 68px);
  padding-bottom: clamp(40px, 6vw, 88px);
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-idx-w) minmax(0, 1fr);
    gap: clamp(36px, 4.6vw, 68px);
    align-items: start;
  }
}

/* ---------- 左侧分类索引 ---------- */
.page-faq .faq-index {
  border: 1px solid var(--paper-2);
  background: rgba(228, 222, 209, .34);
  padding: 16px 14px;
}

.page-faq .faq-index__label {
  color: var(--jade);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.page-faq .faq-index__list > li:nth-child(1) { --dot: var(--copper); }
.page-faq .faq-index__list > li:nth-child(2) { --dot: var(--jade-mid); }
.page-faq .faq-index__list > li:nth-child(3) { --dot: var(--cinnabar); }
.page-faq .faq-index__list > li:nth-child(4) { --dot: var(--electric); }
.page-faq .faq-index__list > li:nth-child(5) { --dot: var(--jade); }
.page-faq .faq-index__list > li:nth-child(6) { --dot: var(--copper); }

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 10px;
  border-left: 3px solid transparent;
  font-size: 14px;
  color: var(--faq-soft);
  text-decoration: none;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .faq-index__link::before {
  content: "";
  flex: 0 0 8px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--dot, var(--copper));
  opacity: .65;
  transition: opacity .25s var(--ease), transform .25s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link.is-current {
  background: rgba(14, 81, 71, .08);
  border-left-color: var(--dot, var(--copper));
  color: var(--jade-deep);
}

.page-faq .faq-index__link:hover::before,
.page-faq .faq-index__link.is-current::before {
  opacity: 1;
  transform: scale(1.15);
}

@media (min-width: 900px) {
  .page-faq .faq-index {
    border: 0;
    background: transparent;
    padding: 0;
  }

  .page-faq .faq-index__inner {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-index__list {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
    border-left: 1px solid var(--paper-2);
  }

  .page-faq .faq-index__link {
    font-size: 15px;
    padding: 11px 12px;
  }
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-group {
  margin-bottom: clamp(38px, 5.4vw, 66px);
  scroll-margin-top: 104px;
}

.page-faq .faq-group__head {
  padding-bottom: 16px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line-copper);
}

.page-faq .faq-group__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--copper);
}

.page-faq .faq-group__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.3;
  letter-spacing: -.01em;
}

.page-faq .faq-group__note {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-soft);
}

.page-faq .faq-group__list {
  display: block;
}

/* ---------- 折叠问答 ---------- */
.page-faq details.faq-item {
  display: block;
  position: relative;
  border-bottom: 1px solid var(--paper-2);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 3px;
  background: var(--cinnabar);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .3s var(--ease);
}

.page-faq .faq-item[open]::before {
  transform: scaleY(1);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 16px 10px 16px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.7;
  color: var(--ink);
  transition: color .25s var(--ease), background .25s var(--ease);
}

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

.page-faq .faq-item__q:hover {
  color: var(--jade);
  background: rgba(14, 81, 71, .04);
}

.page-faq .faq-item__no {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--copper);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__q::after {
  content: "+";
  flex: 0 0 auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1.4;
  color: var(--copper);
  transition: transform .3s var(--ease), color .3s var(--ease);
}

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

.page-faq .faq-item__a {
  padding: 0 12px 20px 42px;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.95;
  color: rgba(26, 29, 27, .8);
}

@media (min-width: 720px) {
  .page-faq .faq-item__q {
    font-size: 16.5px;
    padding: 19px 12px 19px 20px;
  }

  .page-faq .faq-item__a {
    padding: 0 20px 24px 48px;
  }

  .page-faq .faq-item__a p {
    font-size: 15px;
  }
}

.page-faq .faq-figure {
  margin: clamp(22px, 3.4vw, 34px) 0 0;
}

/* ---------- 排查三步 ---------- */
.page-faq .faq-steps {
  position: relative;
  margin: clamp(38px, 5.4vw, 66px) 0;
  padding: clamp(26px, 4.4vw, 52px) clamp(20px, 4vw, 48px);
  color: var(--paper);
  background:
    radial-gradient(120% 90% at 92% 0%, rgba(79, 195, 161, .18), transparent 60%),
    linear-gradient(148deg, var(--felt) 0%, var(--jade-deep) 100%);
  -webkit-clip-path: polygon(0 18px, 18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  clip-path: polygon(0 18px, 18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-faq .faq-steps__label {
  color: var(--copper);
}

.page-faq .faq-steps__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(21px, 3.2vw, 32px);
  line-height: 1.34;
  color: var(--paper);
}

.page-faq .faq-steps__list {
  list-style: none;
  margin: clamp(22px, 3.4vw, 36px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

@media (min-width: 780px) {
  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }
}

.page-faq .faq-steps__item {
  padding-top: 16px;
  border-top: 1px solid rgba(245, 240, 230, .22);
}

.page-faq .faq-steps__no {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-steps__name {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  color: var(--paper);
}

.page-faq .faq-steps__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: rgba(245, 240, 230, .78);
}

/* ---------- 术语表 ---------- */
.page-faq .faq-terms {
  margin-bottom: clamp(38px, 5.4vw, 66px);
  scroll-margin-top: 104px;
}

.page-faq .faq-terms__head {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-copper);
}

.page-faq .faq-terms__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(20px, 2.9vw, 28px);
  line-height: 1.34;
}

.page-faq .faq-terms__note {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-soft);
}

.page-faq .faq-terms__list {
  margin: 6px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 720px) {
  .page-faq .faq-terms__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 3.4vw, 44px);
  }
}

.page-faq .faq-terms__row {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 10px;
  padding: 15px 0;
  border-bottom: 1px solid var(--paper-2);
}

.page-faq .faq-terms__term {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  color: var(--jade);
  letter-spacing: .02em;
}

.page-faq .faq-terms__def {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: rgba(26, 29, 27, .8);
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 40px);
  padding: clamp(26px, 4.4vw, 48px) clamp(20px, 4vw, 46px);
  background:
    radial-gradient(110% 80% at 0% 100%, rgba(28, 122, 104, .22), transparent 62%),
    var(--jade-deep);
  color: var(--paper);
  -webkit-clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

@media (min-width: 860px) {
  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
  }
}

.page-faq .faq-contact__label {
  color: var(--cinnabar);
}

.page-faq .faq-contact__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(20px, 3vw, 30px);
  line-height: 1.36;
  color: var(--paper);
}

.page-faq .faq-contact__text {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: 14.5px;
  line-height: 1.95;
  color: rgba(245, 240, 230, .8);
}

.page-faq .faq-contact__lines {
  list-style: none;
  margin: 22px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line-copper);
  display: grid;
  gap: 12px;
}

.page-faq .faq-contact__lines li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
}

.page-faq .faq-contact__lines .label {
  flex: 0 0 78px;
  color: rgba(245, 240, 230, .5);
}

.page-faq .faq-contact__val {
  font-size: 15px;
  color: var(--paper);
  letter-spacing: .01em;
  word-break: break-word;
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-contact__figure {
  margin: 0;
}

/* ---------- 返回顶部 ---------- */
.page-faq .to-top__text {
  font-size: 12px;
  letter-spacing: .12em;
}

@media (max-width: 560px) {
  .page-faq .faq-hero__meta {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .page-faq .faq-hero__cell {
    flex-direction: row;
    align-items: baseline;
    gap: 12px;
  }

  .page-faq .faq-terms__row {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }
}
<<<END>>>