.page-faq {
  --faq-side-w: 208px;
  --faq-head-gap: clamp(1.25rem, 2.4vw, 2rem);
  padding-bottom: clamp(3rem, 7vw, 5.5rem);
}

/* 面包屑 */
.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  padding: 1.5rem 0 .35rem;
  font-size: .8125rem;
  color: var(--mist);
}
.page-faq .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur), border-color var(--dur);
}
.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--jade);
  border-bottom-color: var(--jade);
}
.page-faq .breadcrumbs > span[aria-current] {
  color: var(--paper);
}
.page-faq .breadcrumbs > span[aria-hidden] {
  color: var(--stone);
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: 1.25rem 0 clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
}
@media (min-width: 880px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: end;
  }
}
.page-faq .faq-hero h1 {
  margin: .7rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 4.3vw, 2.95rem);
  line-height: 1.2;
  letter-spacing: -.012em;
  color: var(--paper);
}
.page-faq .faq-hero h1::before {
  content: "";
  display: block;
  width: 58px;
  height: 2px;
  margin-bottom: 1.05rem;
  background: linear-gradient(90deg, var(--copper), var(--gold));
}
.page-faq .faq-hero .lede {
  margin: 1.15rem 0 0;
  max-width: 42em;
  font-size: clamp(.95rem, 1.08vw, 1.05rem);
  line-height: 1.9;
  color: var(--mist);
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.7rem;
}
.page-faq .faq-hero__figure {
  margin: 0;
}
.page-faq .faq-hero__figure .media-frame {
  aspect-ratio: 3 / 2;
}

/* 主栅格 */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.75rem, 3.5vw, 3rem);
  padding-top: clamp(2rem, 4vw, 3rem);
}
@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-side-w) minmax(0, 1fr);
  }
}

/* 左栏索引 */
.page-faq .faq-side__title {
  margin: 0 0 .8rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
}
.page-faq .faq-side__list {
  list-style: none;
  margin: 0;
  padding: 0 0 .3rem;
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--stone) transparent;
}
.page-faq .faq-side__list li {
  flex: 0 0 auto;
}
@media (min-width: 980px) {
  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--status-h) + 2rem);
    align-self: start;
  }
  .page-faq .faq-side__list {
    flex-direction: column;
    gap: .35rem;
    overflow: visible;
    padding-bottom: 0;
  }
}
.page-faq .faq-side__list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: .6rem;
  padding: .55rem .7rem;
  white-space: nowrap;
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
  border-left: 2px solid transparent;
  color: var(--paper);
  font-size: .875rem;
  text-decoration: none;
  transition: border-color var(--dur), background var(--dur), color var(--dur);
}
.page-faq .faq-side__list a:hover,
.page-faq .faq-side__list a:focus-visible {
  background: var(--ink-700);
  border-color: var(--line);
  border-left-color: var(--jade);
  color: var(--gold-bright);
}
.page-faq .faq-side__list .mono {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--gold);
}
.page-faq .faq-side__list b {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: .8125rem;
  color: var(--jade);
}
.page-faq .faq-side__note {
  margin-top: 1.25rem;
  padding: 1rem;
  background: var(--ink-800);
  border-top: 2px solid var(--copper);
}
.page-faq .faq-side__note p {
  margin: 0 0 .85rem;
  font-size: .8125rem;
  line-height: 1.75;
  color: var(--mist);
}

/* 问答分组 */
.page-faq .faq-body {
  min-width: 0;
}
.page-faq .faq-group + .faq-group {
  margin-top: var(--faq-head-gap);
}
.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: .5rem .9rem;
  padding-bottom: .85rem;
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 2.6vw, 1.9rem);
  line-height: 1;
  letter-spacing: .03em;
  color: var(--gold);
  padding-top: .2rem;
}
.page-faq .faq-group__meta {
  flex: 1 1 14rem;
  min-width: 0;
}
.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 800;
  font-size: clamp(1.12rem, 1.9vw, 1.4rem);
  line-height: 1.35;
  letter-spacing: -.006em;
  color: var(--paper);
}
.page-faq .faq-group__head p {
  margin: .35rem 0 0;
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--mist);
}
.page-faq .faq-group__head .tag {
  margin-left: auto;
  flex: none;
  align-self: center;
}

/* 折叠问答条 */
.page-faq .faq-list {
  margin: 0;
}
.page-faq .faq-item {
  border-bottom: 1px solid var(--line-soft);
  border-left: 2px solid transparent;
  transition: border-left-color var(--dur), background var(--dur);
}
.page-faq .faq-item[open] {
  border-left-color: var(--jade);
  background: linear-gradient(90deg, rgba(47, 191, 160, .07), rgba(47, 191, 160, 0) 48%);
}
.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: .85rem;
  padding: 1rem .6rem 1rem 1rem;
  cursor: pointer;
  list-style: none;
  font-size: clamp(.95rem, 1.08vw, 1.02rem);
  font-weight: 500;
  line-height: 1.65;
  color: var(--paper);
  transition: color var(--dur);
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary::before {
  content: "+";
  flex: none;
  width: 1ch;
  font-family: var(--font-mono);
  font-size: 1.1em;
  line-height: 1.45;
  color: var(--jade);
  transition: color var(--dur);
}
.page-faq .faq-item[open] summary::before {
  content: "\2212";
  color: var(--gold-bright);
}
.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--gold-bright);
}
.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--jade);
  outline-offset: -2px;
}
.page-faq .faq-item__body {
  padding: 0 1.2rem 1.15rem 2.85rem;
}
.page-faq .faq-item__body p {
  margin: 0;
  max-width: 42em;
  font-size: .9375rem;
  line-height: 1.9;
  color: var(--mist);
}
@media (max-width: 520px) {
  .page-faq .faq-item__body {
    padding-left: 1.2rem;
  }
}

/* 分组之间的横向速查条 */
.page-faq .faq-inline {
  display: grid;
  grid-template-columns: 1fr;
  gap: .6rem 1.1rem;
  align-items: center;
  margin: clamp(1.35rem, 2.6vw, 1.9rem) 0;
  padding: .95rem 1.1rem;
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--copper);
}
@media (min-width: 720px) {
  .page-faq .faq-inline {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }
}
.page-faq .faq-inline__tag {
  font-size: .6875rem;
  letter-spacing: .18em;
  color: var(--gold);
  border: 1px solid var(--line);
  padding: .2rem .5rem;
  justify-self: start;
}
.page-faq .faq-inline p {
  margin: 0;
  font-size: .875rem;
  line-height: 1.75;
  color: var(--paper);
}
.page-faq .faq-inline__link {
  justify-self: start;
  font-size: .8125rem;
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 191, 160, .45);
  white-space: nowrap;
  transition: color var(--dur), border-color var(--dur);
}
.page-faq .faq-inline__link:hover,
.page-faq .faq-inline__link:focus-visible {
  color: var(--gold-bright);
  border-bottom-color: var(--gold-bright);
}

/* 四步排查 */
.page-faq .faq-steps {
  margin-top: var(--faq-head-gap);
}
.page-faq .step-rail {
  display: block;
  width: 100%;
  height: auto;
  margin: clamp(1.25rem, 2.6vw, 1.9rem) 0 0;
}
.page-faq .faq-steps__figure {
  margin: clamp(1rem, 2vw, 1.5rem) 0 0;
}
.page-faq .faq-steps__figure .media-frame {
  aspect-ratio: 2 / 1;
}
.page-faq .step-track {
  list-style: none;
  margin: clamp(1.5rem, 3vw, 2.1rem) 0 0;
  padding: 0;
  display: grid;
  gap: .9rem;
}
@media (min-width: 700px) {
  .page-faq .step-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1120px) {
  .page-faq .step-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
.page-faq .step-track__item {
  position: relative;
  padding: 1.15rem 1rem 1.05rem;
  background: var(--ink-700);
  border-top: 2px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: border-top-color var(--dur), background var(--dur);
}
.page-faq .step-track__item:hover {
  background: var(--ink-800);
  border-top-color: var(--jade);
}
.page-faq .step-track__item:last-child {
  border-top-color: var(--gold);
}
.page-faq .step-track__num {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .16em;
  color: var(--gold);
}
.page-faq .step-track__item h3 {
  margin: .55rem 0 .45rem;
  font-size: 1.02rem;
  font-weight: 800;
  line-height: 1.4;
  color: var(--paper);
}
.page-faq .step-track__item p {
  margin: 0 0 .9rem;
  font-size: .8438rem;
  line-height: 1.8;
  color: var(--mist);
}
.page-faq .step-track__item .tag {
  margin-top: auto;
}
.page-faq .faq-steps__foot {
  margin: 1.35rem 0 0;
  font-size: .875rem;
  color: var(--mist);
}
.page-faq .faq-steps__foot a {
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 191, 160, .45);
  transition: color var(--dur), border-color var(--dur);
}
.page-faq .faq-steps__foot a:hover,
.page-faq .faq-steps__foot a:focus-visible {
  color: var(--gold-bright);
  border-bottom-color: var(--gold-bright);
}

/* 联系我们 */
.page-faq .faq-contact {
  margin-top: var(--faq-head-gap);
}
.page-faq .faq-contact__grid {
  margin-top: clamp(1.25rem, 2.6vw, 1.75rem);
}
.page-faq .faq-contact .panel {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .7rem;
  padding: 1.2rem 1.15rem 1.25rem;
}
.page-faq .faq-contact .panel h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.45;
  color: var(--paper);
}
.page-faq .faq-contact .panel p {
  margin: 0;
  font-size: .875rem;
  line-height: 1.85;
  color: var(--mist);
}
.page-faq .faq-contact .copy-btn {
  margin-top: auto;
}
.page-faq .unsolved-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem 1rem;
  margin-top: clamp(1rem, 2vw, 1.4rem);
  padding: .9rem 1.1rem;
  background: rgba(140, 47, 30, .12);
  border: 1px dashed var(--line);
  font-size: .875rem;
  color: var(--mist);
}
.page-faq .unsolved-strip a {
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 191, 160, .45);
  opacity: .78;
  transition: opacity var(--dur), color var(--dur), border-color var(--dur);
}
.page-faq .unsolved-strip:hover a,
.page-faq .unsolved-strip:focus-within a {
  opacity: 1;
  color: var(--gold-bright);
  border-bottom-color: var(--gold-bright);
}
.page-faq .unsolved-strip__hint {
  color: var(--stone);
  font-size: .8125rem;
}
.page-faq .unsolved-strip__ghost {
  margin-left: auto;
}
@media (max-width: 640px) {
  .page-faq .unsolved-strip__ghost {
    margin-left: 0;
  }
}
<<<END>>>