.page-faq {
  --faq-hair: rgba(8, 9, 13, .16);
  --faq-hair-inv: rgba(196, 203, 216, .28);
  --faq-hair-blue: rgba(18, 54, 232, .24);
  background: var(--lt-ice);
  color: var(--lt-black);
}

/* ============ 面包屑 + 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: 18px 0 0;
  background: var(--lt-black);
  color: #ffffff;
}

.page-faq .faq-hero__crumb {
  position: relative;
  z-index: 2;
  margin: 0 0 26px;
}
.page-faq .faq-hero__crumb .crumb__link,
.page-faq .faq-hero__crumb .crumb__sep {
  color: var(--lt-silver);
}
.page-faq .faq-hero__crumb a.crumb__link:hover,
.page-faq .faq-hero__crumb a.crumb__link:focus-visible {
  color: var(--lt-yellow);
}
.page-faq .faq-hero__crumb .crumb__link[aria-current] {
  color: var(--lt-yellow);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-bottom: 52px;
}

.page-faq .faq-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  font-family: var(--lt-font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--lt-yellow);
}
.page-faq .faq-hero__kicker-dot {
  width: 10px;
  height: 10px;
  background: var(--lt-yellow);
}

.page-faq .faq-hero__title {
  margin: 0 0 20px;
  font-family: var(--lt-font-display);
  font-weight: 900;
  font-size: clamp(42px, 11vw, 76px);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: #ffffff;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 34em;
  color: var(--lt-silver);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.page-faq .faq-hero__actions .btn {
  min-width: 148px;
  text-align: center;
}
.page-faq .faq-hero .btn--line {
  background: transparent;
  color: #ffffff;
  border-color: var(--faq-hair-inv);
}
.page-faq .faq-hero .btn--line:hover,
.page-faq .faq-hero .btn--line:focus-visible {
  background: var(--lt-yellow);
  color: var(--lt-black);
  border-color: var(--lt-yellow);
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--faq-hair-inv);
  border-left: 4px solid var(--lt-yellow);
  overflow: hidden;
}
.page-faq .faq-hero__media .media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-top: 24px;
  }
  .page-faq .faq-hero__inner {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: end;
    padding-bottom: 72px;
  }
  .page-faq .faq-hero__media {
    align-self: stretch;
  }
}

/* ============ 主体框架：左侧常驻目录 + 右侧答案区 ============ */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-top: 36px;
  padding-bottom: 72px;
}

.page-faq .faq-index {
  border-top: 3px solid var(--lt-black);
  padding-top: 14px;
}
.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--lt-font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--lt-slate);
}
.page-faq .faq-index__list {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.page-faq .faq-index__list::-webkit-scrollbar {
  display: none;
}
.page-faq .faq-index__list > li {
  flex: 0 0 auto;
  scroll-snap-align: start;
}
.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--faq-hair);
  background: #ffffff;
  color: var(--lt-slate);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color .15s var(--lt-ease), background-color .15s var(--lt-ease), border-color .15s var(--lt-ease);
}
.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--lt-black);
  border-color: var(--lt-black);
  color: #ffffff;
}
.page-faq .faq-index__link:hover .faq-index__num,
.page-faq .faq-index__link:focus-visible .faq-index__num {
  color: var(--lt-yellow);
}
.page-faq .faq-index__num {
  font-family: var(--lt-font-mono);
  font-size: 12px;
  color: var(--lt-blue);
  transition: color .15s var(--lt-ease);
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: 56px;
    padding-top: 64px;
    padding-bottom: 104px;
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 28px;
  }
  .page-faq .faq-index__list {
    flex-wrap: wrap;
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }
  .page-faq .faq-index__list > li {
    flex: 1 1 auto;
    width: 100%;
  }
  .page-faq .faq-index__link {
    border: 0;
    border-left: 3px solid transparent;
    background: transparent;
    padding: 10px 4px 10px 14px;
    white-space: normal;
  }
  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    background: var(--lt-black);
    border-left-color: var(--lt-yellow);
  }
}

/* ============ 章节 ============ */
.page-faq .faq-main {
  min-width: 0;
}
.page-faq .faq-section {
  scroll-margin-top: 76px;
}
.page-faq .faq-section + .faq-section {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--faq-hair);
}
.page-faq .faq-section__title {
  margin: 18px 0 10px;
  font-family: var(--lt-font-serif);
  font-weight: 600;
  font-size: clamp(22px, 4vw, 31px);
  line-height: 1.35;
  color: var(--lt-black);
}
.page-faq .faq-section__desc {
  margin: 0 0 26px;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--lt-slate);
}

/* ============ 折叠问答 ============ */
.page-faq .qa-list {
  display: grid;
  gap: 0;
}

.page-faq .qa {
  border: 1px solid var(--faq-hair);
  background: #ffffff;
  margin-top: -1px;
  transition: border-color .15s var(--lt-ease);
}
.page-faq .qa:first-child {
  margin-top: 0;
}
.page-faq .qa:hover,
.page-faq .qa[open] {
  border-color: var(--lt-blue);
  position: relative;
  z-index: 1;
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 18px;
  align-items: start;
  gap: 12px;
  padding: 16px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--lt-font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.55;
  color: var(--lt-black);
  transition: background-color .15s var(--lt-ease), color .15s var(--lt-ease);
}
.page-faq .qa__q::-webkit-details-marker {
  display: none;
}
.page-faq .qa__q:hover,
.page-faq .qa__q:focus-visible {
  background: var(--lt-blue);
  color: #ffffff;
}
.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--lt-yellow);
  outline-offset: -2px;
}
.page-faq .qa[open] .qa__q {
  background: var(--lt-black);
  color: #ffffff;
}

.page-faq .qa__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 26px;
  background: var(--lt-black);
  color: var(--lt-yellow);
  font-family: var(--lt-font-mono);
  font-size: 12px;
  line-height: 1;
}
.page-faq .qa__q:hover .qa__num,
.page-faq .qa__q:focus-visible .qa__num {
  background: var(--lt-yellow);
  color: var(--lt-black);
}

.page-faq .qa__text {
  min-width: 0;
}

.page-faq .qa__sign {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 6px;
  justify-self: end;
  color: var(--lt-blue);
}
.page-faq .qa__q:hover .qa__sign,
.page-faq .qa__q:focus-visible .qa__sign,
.page-faq .qa[open] .qa__sign {
  color: var(--lt-yellow);
}
.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: currentColor;
}
.page-faq .qa__sign::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 2px;
}
.page-faq .qa__sign::after {
  top: 0;
  left: 6px;
  width: 2px;
  height: 14px;
  transition: transform .15s var(--lt-ease), opacity .15s var(--lt-ease);
}
.page-faq .qa[open] .qa__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 16px 16px 20px 58px;
  border-top: 1px solid var(--faq-hair-blue);
  font-size: 15px;
  line-height: 1.8;
  color: #1c2436;
}
.page-faq .qa__a p {
  margin: 0;
}
.page-faq .qa__a p + p,
.page-faq .qa__a p + .qa__steps,
.page-faq .qa__a .qa__steps + p {
  margin-top: 14px;
}
.page-faq .qa__a a {
  color: var(--lt-blue);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--lt-yellow);
  transition: background-color .15s var(--lt-ease);
}
.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  background: var(--lt-yellow);
  color: var(--lt-black);
}

.page-faq .qa__steps {
  margin: 14px 0 0;
  padding: 14px 16px 14px 34px;
  background: var(--lt-concrete);
  font-size: 14.5px;
  line-height: 1.75;
  color: #1c2436;
}
.page-faq .qa__steps li + li {
  margin-top: 6px;
}

.page-faq .faq-copy {
  margin-top: 16px;
}

@media (max-width: 560px) {
  .page-faq .qa__a {
    padding: 14px 14px 18px 14px;
  }
  .page-faq .qa__q {
    grid-template-columns: 28px minmax(0, 1fr) 16px;
    gap: 10px;
    padding: 14px 14px;
    font-size: 15.5px;
  }
}

/* ============ 快速排查路径 ============ */
.page-faq .faq-triage .faq-section__title {
  margin-bottom: 14px;
}

.page-faq .triage-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
  counter-reset: triage;
}

.page-faq .triage-step {
  position: relative;
  padding: 20px 18px 22px;
  border: 1px solid var(--faq-hair);
  border-left: 4px solid var(--lt-blue);
  background: #ffffff;
  margin-top: -1px;
  transition: border-color .15s var(--lt-ease), background-color .15s var(--lt-ease);
}
.page-faq .triage-step:first-child {
  margin-top: 0;
}
.page-faq .triage-step:hover {
  border-color: var(--lt-yellow);
  border-left-color: var(--lt-yellow);
  background: var(--lt-ice);
}
.page-faq .triage-step__num {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 8px;
  background: var(--lt-black);
  color: var(--lt-yellow);
  font-family: var(--lt-font-mono);
  font-size: 12px;
  line-height: 1.4;
}
.page-faq .triage-step__title {
  margin: 0 0 12px;
  font-family: var(--lt-font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.4;
  color: var(--lt-black);
}
.page-faq .triage-step__list {
  margin: 0;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: #1c2436;
}
.page-faq .triage-step__list li + li {
  margin-top: 4px;
}
.page-faq .triage-step__exit {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--faq-hair);
  font-family: var(--lt-font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--lt-blue);
}

.page-faq .faq-triage__figure {
  margin: 0 0 28px;
  border: 1px solid var(--faq-hair);
  background: var(--lt-concrete);
  aspect-ratio: 12 / 7;
  overflow: hidden;
}
.page-faq .faq-triage__figure .media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .triage-outro {
  padding: 20px 18px;
  background: var(--lt-black);
  color: var(--lt-silver);
  font-size: 15px;
  line-height: 1.8;
}
.page-faq .triage-outro p {
  margin: 0;
}
.page-faq .triage-outro a {
  color: var(--lt-yellow);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--lt-yellow);
}
.page-faq .triage-outro a:hover,
.page-faq .triage-outro a:focus-visible {
  background: var(--lt-yellow);
  color: var(--lt-black);
  border-bottom-color: transparent;
}

@media (min-width: 760px) {
  .page-faq .triage-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .triage-step {
    margin-top: 0;
    margin-left: -1px;
  }
  .page-faq .triage-step:first-child {
    margin-left: 0;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-section + .faq-section {
    margin-top: 72px;
    padding-top: 52px;
  }
  .page-faq .qa__a {
    padding: 18px 24px 24px 58px;
  }
  .page-faq .triage-step {
    padding: 26px 22px 28px;
  }
}

/* ============ 动效可访问性 ============ */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .page-faq .faq-body,
  .page-faq .faq-section {
    scroll-behavior: smooth;
  }
}
<<<PAGE_CSS_END>>>