.page-faq {
  --faq-card: #0B2E26;
  --faq-card-open: #0d352c;
  --faq-hair: rgba(47, 243, 208, .26);
  --faq-soft: rgba(143, 184, 168, .78);
  background: var(--ink-900);
  color: var(--paper);
  overflow-x: hidden;
}

.page-faq .faq-crumb {
  padding-top: clamp(14px, 3vw, 26px);
}

.page-faq .faq-crumb .breadcrumb {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--sage);
}

.page-faq .faq-crumb .breadcrumb a {
  color: var(--signal);
  text-decoration: none;
}

.page-faq .faq-crumb .breadcrumb a:hover {
  text-decoration: underline;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(20px, 4vw, 40px) 0 clamp(30px, 5vw, 60px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -20% -30% auto auto;
  width: 70%;
  height: 130%;
  background: linear-gradient(135deg, rgba(47, 243, 208, .14), rgba(6, 28, 23, 0) 62%);
  transform: skewX(-14deg);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
}

.page-faq .faq-hero-copy .eyebrow {
  color: var(--orange);
}

.page-faq .faq-hero-copy h1 {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 7.4vw, 4.4rem);
  line-height: 1;
  letter-spacing: -.005em;
  text-transform: none;
  color: var(--paper);
}

.page-faq .faq-hero-copy .lead {
  max-width: 46ch;
  color: var(--sage);
  font-size: clamp(.98rem, 1.6vw, 1.08rem);
  line-height: 1.78;
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0 26px;
}

.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 12px;
  border-left: 3px solid var(--orange);
}

.page-faq .faq-stats .mono {
  font-size: .95rem;
  font-weight: 700;
  color: var(--signal);
  letter-spacing: .04em;
}

.page-faq .faq-stats li > span:last-child {
  font-size: .78rem;
  color: var(--faq-soft);
  letter-spacing: .02em;
}

.page-faq .faq-hero-media {
  margin: 0;
  border-color: var(--ink-700);
  box-shadow: var(--shadow);
}

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

.page-faq .faq-hero-media .frame-caption,
.page-faq .faq-device-figure .frame-caption {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--sage);
}

/* 问答台 */
.page-faq .faq-stage {
  padding: clamp(30px, 5vw, 64px) 0 clamp(36px, 5vw, 70px);
  border-top: var(--bd) solid var(--ink-700);
  background:
    linear-gradient(180deg, rgba(11, 46, 38, .9), rgba(6, 28, 23, .35) 70%),
    var(--ink-900);
}

.page-faq .faq-stage-head {
  max-width: 58ch;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .faq-stage-head .eyebrow {
  color: var(--signal);
}

.page-faq .faq-stage-head h2 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4.4vw, 2.6rem);
  line-height: 1.06;
  color: var(--paper);
}

.page-faq .faq-stage-note {
  margin: 0;
  color: var(--sage);
  font-size: .95rem;
  line-height: 1.7;
}

.page-faq .faq-seg {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  align-items: start;
}

.page-faq .faq-tabs {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(190px, 1fr);
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 8px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-tab {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-body);
  font-size: .94rem;
  color: var(--paper);
  background: var(--ink-800);
  border: var(--bd) solid var(--ink-700);
  border-radius: 0;
  box-shadow: none;
  cursor: pointer;
  transition: transform .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-tab:hover {
  border-color: var(--faq-hair);
  transform: translateX(2px);
}

.page-faq .faq-tab[aria-selected="true"] {
  background: var(--ink-700);
  border-color: var(--signal);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-tab-num {
  font-size: .74rem;
  letter-spacing: .12em;
  color: var(--signal);
  border: 1px solid var(--faq-hair);
  padding: 3px 5px;
}

.page-faq .faq-tab-name {
  font-weight: 600;
  line-height: 1.3;
}

.page-faq .faq-tab-count {
  font-size: .7rem;
  color: var(--faq-soft);
  white-space: nowrap;
}

.page-faq .faq-tab[aria-selected="true"] .faq-tab-count {
  color: var(--orange);
}

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

.page-faq .faq-panels > .seg-panel[hidden] {
  display: none;
}

.page-faq .faq-panels > .seg-panel {
  animation: faq-panel-in .22s var(--ease) both;
}

@keyframes faq-panel-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 手风琴 */
.page-faq .qa {
  margin-bottom: 14px;
  background: var(--faq-card);
  border: var(--bd) solid var(--ink-700);
  box-shadow: var(--shadow-sm);
}

.page-faq .qa[open] {
  border-color: var(--line);
  background: var(--faq-card-open);
}

.page-faq .qa-summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-faq .qa-num {
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--signal);
  border: 1px solid var(--faq-hair);
  padding: 3px 6px;
  white-space: nowrap;
}

.page-faq .qa-title {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(.96rem, 1.9vw, 1.04rem);
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .qa-mark {
  position: relative;
  width: 22px;
  height: 22px;
  border: 1px solid var(--line);
  flex: none;
}

.page-faq .qa-mark::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 5px;
  bottom: 5px;
  width: 2px;
  background: var(--signal);
  transform: translateX(-50%);
  transition: transform .2s var(--ease);
}

.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 5px;
  right: 5px;
  height: 2px;
  background: var(--signal);
  transform: translateY(-50%);
}

.page-faq .qa[open] .qa-mark::before {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .qa-body {
  padding: 0 16px 18px;
  color: var(--sage);
  font-size: .94rem;
  line-height: 1.75;
}

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

.page-faq .qa-steps {
  margin: 10px 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
  display: grid;
  gap: 8px;
}

.page-faq .qa-steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 10px;
  align-items: start;
}

.page-faq .qa-steps li::before {
  content: counter(faqstep);
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  color: var(--ink-900);
  background: var(--signal);
}

.page-faq .qa-tip {
  margin: 12px 0 0;
  padding: 10px 12px;
  border-left: 3px solid var(--orange);
  background: rgba(255, 106, 42, .1);
  color: var(--cream);
  font-size: .88rem;
  line-height: 1.7;
}

.page-faq .faq-device-figure {
  margin: 6px 0 4px;
  border-color: var(--ink-700);
  box-shadow: var(--shadow-sm);
}

/* 联系区 */
.page-faq .faq-help {
  position: relative;
  padding: clamp(34px, 5vw, 68px) 0;
  background: var(--ink-800);
  border-top: var(--bd) solid var(--ink-700);
}

.page-faq .faq-help::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 6px;
  background: repeating-linear-gradient(120deg, var(--orange) 0 18px, transparent 18px 36px);
  opacity: .7;
}

.page-faq .faq-help-grid {
  display: grid;
  gap: clamp(22px, 4vw, 42px);
}

.page-faq .faq-help-copy .eyebrow {
  color: var(--orange);
}

.page-faq .faq-help-copy h2 {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4.6vw, 2.6rem);
  line-height: 1.08;
  color: var(--paper);
}

.page-faq .faq-help-copy p {
  max-width: 48ch;
  margin: 0 0 18px;
  color: var(--sage);
  font-size: .96rem;
  line-height: 1.75;
}

.page-faq .faq-help-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-contact-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact-list li {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 6px 12px;
  padding: 14px 16px;
  background: var(--ink-900);
  border: var(--bd) solid var(--ink-700);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-contact-label {
  grid-column: 1 / -1;
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--signal);
}

.page-faq .faq-contact-list .contact-value {
  font-size: .95rem;
  line-height: 1.55;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-contact-list .copy-btn {
  justify-self: end;
}

@media (min-width: 760px) {
  .page-faq .faq-help-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  }

  .page-faq .faq-hero {
    padding-bottom: clamp(40px, 5vw, 72px);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-seg {
    grid-template-columns: 288px minmax(0, 1fr);
  }

  .page-faq .faq-tabs {
    grid-auto-flow: row;
    grid-auto-columns: auto;
    position: sticky;
    top: calc(var(--header-h) + 18px);
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-tab:hover {
    transform: translateX(4px);
  }

  .page-faq .qa-summary {
    padding: 16px 20px;
  }

  .page-faq .qa-body {
    padding: 0 20px 20px;
    font-size: .95rem;
  }

  .page-faq .faq-device-figure {
    max-width: 620px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-panels > .seg-panel {
    animation: none;
  }

  .page-faq .faq-tab,
  .page-faq .qa-mark::before {
    transition: none;
  }
}
<<<END>>>