.page-faq {
  --faq-hair: 1px solid var(--line-600);
  --faq-gap: clamp(20px, 3.4vw, 38px);
  display: block;
  background:
    radial-gradient(120% 60% at 92% -6%, rgba(200, 242, 79, .07), transparent 60%),
    radial-gradient(90% 50% at 4% 40%, rgba(73, 214, 232, .05), transparent 62%);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 5.4vw, 60px) 0 clamp(30px, 5.6vw, 68px);
  border-bottom: var(--faq-hair);
  overflow: hidden;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(20px, 3.4vw, 34px);
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: center;
}

.page-faq .faq-kicker {
  font-size: .6875rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--lime-400);
  margin: 0 0 14px;
}

.page-faq .faq-title {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.04;
  color: var(--white);
  font-size: clamp(2.1rem, 6.6vw, 4.1rem);
  margin: 0 0 18px;
}

.page-faq .faq-lede {
  font-family: var(--font-body);
  color: var(--slate-100);
  font-size: clamp(.9375rem, 1.8vw, 1.0625rem);
  line-height: 1.9;
  max-width: 48ch;
  margin: 0 0 26px;
}

.page-faq .faq-hero-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
}

.page-faq .faq-hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding-left: 12px;
  border-left: 2px solid var(--line-600);
}

.page-faq .faq-hero-stats .num {
  font-family: var(--font-mono);
  font-size: 1.1875rem;
  letter-spacing: .02em;
  color: var(--lime-200);
  line-height: 1.1;
}

.page-faq .faq-hero-stats span + span {
  font-size: .75rem;
  color: var(--slate-400);
  letter-spacing: .04em;
}

.page-faq .faq-hero-media {
  margin: 0;
  position: relative;
  border: var(--faq-hair);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-900);
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  padding: clamp(30px, 5.6vw, 62px) 0 clamp(40px, 7vw, 84px);
}

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

.page-faq .faq-rail-title {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--slate-400);
  margin: 0 0 14px;
}

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

.page-faq .faq-toc-list {
  list-style: none;
  margin: 0;
  padding: 0 0 12px;
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  border-bottom: var(--faq-hair);
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-toc-list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-toc-list li {
  flex: 0 0 auto;
  position: relative;
}

.page-faq .faq-toc-list a {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 14px;
  box-sizing: border-box;
  border: var(--faq-hair);
  border-radius: 999px;
  color: var(--slate-400);
  font-size: .8125rem;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-toc-num {
  font-size: .625rem;
  letter-spacing: .08em;
  color: var(--slate-400);
  transition: color .2s var(--ease);
}

.page-faq .faq-toc-list a:hover,
.page-faq .faq-toc-list a:focus-visible {
  color: var(--lime-200);
  border-color: rgba(200, 242, 79, .45);
  outline: none;
}

.page-faq .faq-toc-list a.is-active {
  color: var(--lime-400);
  border-color: rgba(200, 242, 79, .62);
  background: rgba(200, 242, 79, .08);
}

.page-faq .faq-toc-list a.is-active .faq-toc-num {
  color: var(--lime-400);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-stream {
  display: flex;
  flex-direction: column;
  gap: clamp(36px, 6vw, 68px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 26px);
  min-width: 0;
}

.page-faq .faq-group-head {
  border-top: 2px solid var(--line-600);
  padding-top: 16px;
  margin-bottom: 20px;
}

.page-faq .faq-group-index {
  display: block;
  font-size: .6875rem;
  letter-spacing: .2em;
  color: var(--lime-400);
  margin: 0 0 10px;
}

.page-faq .faq-group-head h2 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--white);
  font-size: clamp(1.3rem, 3.6vw, 2rem);
  line-height: 1.16;
  margin: 0 0 10px;
}

.page-faq .faq-group-lede {
  color: var(--slate-400);
  font-size: .875rem;
  line-height: 1.85;
  margin: 0;
  max-width: 58ch;
}

.page-faq .faq-figure {
  margin: 0 0 22px;
  border: var(--faq-hair);
  border-radius: var(--radius);
  background: var(--ink-900);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-figure .media-caption {
  display: block;
  padding: 12px 16px;
  border-top: var(--faq-hair);
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .02em;
  line-height: 1.7;
  color: var(--slate-400);
}

.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-item {
  border: var(--faq-hair);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(14, 30, 60, .55), rgba(8, 18, 39, .32));
  transition: border-color .22s var(--ease), background .22s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(73, 214, 232, .34);
}

.page-faq .faq-item[open] {
  border-color: rgba(200, 242, 79, .48);
  background: linear-gradient(180deg, rgba(14, 30, 60, .88), rgba(8, 18, 39, .58));
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  box-sizing: border-box;
  min-height: 44px;
  cursor: pointer;
  list-style: none;
  color: var(--slate-100);
  font-family: var(--font-body);
  font-size: clamp(.9375rem, 1.9vw, 1.0625rem);
  line-height: 1.65;
  transition: color .2s var(--ease);
}

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

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

.page-faq .faq-item summary:hover {
  color: var(--white);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--lime-400);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.page-faq .faq-q-index {
  flex: 0 0 auto;
  min-width: 34px;
  padding-top: 4px;
  font-size: .6875rem;
  letter-spacing: .06em;
  color: var(--slate-400);
  transition: color .2s var(--ease);
}

.page-faq .faq-item[open] .faq-q-index {
  color: var(--lime-400);
}

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

.page-faq .faq-q-icon {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 6px;
  margin-left: 4px;
}

.page-faq .faq-q-icon::before,
.page-faq .faq-q-icon::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  background: var(--lime-400);
  border-radius: 1px;
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}

.page-faq .faq-q-icon::before {
  width: 12px;
  height: 2px;
}

.page-faq .faq-q-icon::after {
  width: 2px;
  height: 12px;
}

.page-faq .faq-item[open] .faq-q-icon::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-answer {
  margin: 0 18px 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-600);
  color: var(--slate-400);
  font-size: .875rem;
  line-height: 1.95;
  font-family: var(--font-body);
}

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

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

.page-faq .faq-answer a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-answer a:hover {
  color: var(--lime-200);
}

.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 10px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 28px;
}

.page-faq .faq-steps li::before {
  content: counter(faqstep);
  position: absolute;
  left: 0;
  top: 3px;
  width: 18px;
  height: 18px;
  border: 1px solid rgba(200, 242, 79, .5);
  border-radius: 50%;
  color: var(--lime-400);
  font-family: var(--font-mono);
  font-size: .625rem;
  line-height: 16px;
  text-align: center;
}

/* ---------- 人工协助 ---------- */
.page-faq .faq-support-card {
  position: relative;
  border: var(--faq-hair);
  border-radius: var(--radius);
  padding: clamp(20px, 3.6vw, 34px);
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(255, 138, 43, .14), transparent 58%),
    radial-gradient(100% 120% at 0% 100%, rgba(73, 214, 232, .09), transparent 62%),
    var(--ink-800);
  box-shadow: var(--shadow-panel);
  overflow: hidden;
}

.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .faq-contact-item {
  border: var(--faq-hair);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  background: rgba(4, 7, 15, .5);
}

.page-faq .faq-contact-key {
  display: block;
  font-family: var(--font-mono);
  font-size: .625rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--slate-400);
  margin-bottom: 10px;
}

.page-faq .faq-contact-val {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(.9375rem, 2.4vw, 1.125rem);
  letter-spacing: .01em;
  color: var(--lime-200);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact-note {
  margin: 10px 0 0;
  color: var(--slate-400);
  font-size: .8125rem;
  line-height: 1.8;
}

.page-faq .faq-support-tips {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px dashed var(--line-600);
}

.page-faq .faq-support-tips-title {
  font-size: .625rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--slate-400);
  margin: 0 0 12px;
}

.page-faq .faq-tip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-support-actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-support-actions .btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-answer {
    margin-left: 66px;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(28px, 4.6vw, 56px);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 216px) minmax(0, 1fr);
    gap: clamp(30px, 5vw, 68px);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }

  .page-faq .faq-toc-list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
    overflow: visible;
    padding: 0 0 0 15px;
    border-bottom: 0;
    border-left: var(--faq-hair);
  }

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

  .page-faq .faq-toc-list a {
    justify-content: flex-start;
    min-height: 44px;
    padding: 9px 12px 9px 0;
    border: 0;
    border-radius: 0;
    white-space: normal;
    font-size: .875rem;
    background: transparent;
  }

  .page-faq .faq-toc-list a:hover,
  .page-faq .faq-toc-list a:focus-visible {
    border-color: transparent;
    transform: translateX(2px);
  }

  .page-faq .faq-toc-list a.is-active {
    border-color: transparent;
    background: transparent;
  }

  .page-faq .faq-toc-list a.is-active::before {
    content: "";
    position: absolute;
    left: -16px;
    top: 10px;
    bottom: 10px;
    width: 2px;
    border-radius: 2px;
    background: var(--lime-400);
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero-stats {
    gap: 14px 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-q-icon::before,
  .page-faq .faq-q-icon::after,
  .page-faq .faq-toc-list a,
  .page-faq .faq-toc-num {
    transition: none;
  }
}
<<<END>>>