.page-faq {
  --faq-soft-line: rgba(22, 74, 58, 0.72);
  --faq-hair-line: rgba(22, 74, 58, 0.42);
  background:
    radial-gradient(120% 70% at 88% -8%, rgba(61, 255, 182, 0.1), transparent 58%),
    linear-gradient(180deg, rgba(12, 42, 32, 0.85) 0, rgba(7, 26, 20, 0) 520px),
    var(--ink-900);
}

.page-faq :is(a, button, summary):focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}

/* 面包屑 */
.page-faq .faq-crumb {
  padding-top: 18px;
  padding-bottom: 4px;
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

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

.page-faq .breadcrumb a:hover {
  color: var(--mint);
}

.page-faq .breadcrumb li:not(:first-child)::before {
  content: "/";
  margin-right: 8px;
  color: rgba(143, 185, 170, 0.45);
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--paper);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 38px) 0 clamp(28px, 5vw, 54px);
  border-bottom: 1px solid var(--faq-hair-line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(22, 74, 58, 0.42) 0 1px, transparent 1px 92px),
    repeating-linear-gradient(0deg, rgba(22, 74, 58, 0.26) 0 1px, transparent 1px 92px);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, 0.35) 62%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, 0.35) 62%, transparent 100%);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  display: grid;
  gap: 26px;
  align-items: end;
}

.page-faq .faq-h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 6.2vw, 3.7rem);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper);
  max-width: 18em;
}

.page-faq .faq-lede {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: clamp(14.5px, 1.9vw, 17px);
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--faq-soft-line);
  background: rgba(12, 42, 32, 0.7);
  color: var(--mist);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-decoration: none;
  clip-path: var(--chamfer-sm);
  transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-jump a::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  background: var(--mint);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--paper);
  border-color: var(--mint);
  background: rgba(61, 255, 182, 0.1);
}

.page-faq .faq-hero-aside {
  padding: 6px 0 6px 18px;
  border-left: 2px solid var(--mint);
  background: linear-gradient(90deg, rgba(61, 255, 182, 0.08), transparent 82%);
}

.page-faq .faq-aside-k {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-aside-v {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.4vw, 21px);
  font-variant-numeric: tabular-nums;
  color: var(--mint);
  letter-spacing: 0.02em;
}

.page-faq .faq-aside-n {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

/* 分节 */
.page-faq .faq-section {
  padding: clamp(38px, 6.5vw, 72px) 0;
  border-bottom: 1px solid var(--faq-hair-line);
}

.page-faq .faq-section:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-head {
  max-width: 780px;
  margin-bottom: clamp(22px, 3.6vw, 38px);
}

.page-faq .section-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.42rem, 3.6vw, 2.25rem);
  line-height: 1.22;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .section-note {
  margin: 12px 0 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

/* 换设备步骤 */
.page-faq .entry-flow {
  display: grid;
  gap: 26px;
}

.page-faq .entry-steps {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .entry-step {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 20px 18px 16px;
  background:
    linear-gradient(140deg, rgba(61, 255, 182, 0.08), transparent 58%),
    var(--ink-800);
  box-shadow: inset 0 0 0 1px rgba(22, 74, 58, 0.9);
  clip-path: var(--chamfer);
}

.page-faq .step-num {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--ink-900);
  background: var(--mint);
  clip-path: var(--chamfer-sm);
}

.page-faq .step-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.3vw, 1.16rem);
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-faq .step-body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--mist);
}

/* 图 */
.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--ink-800);
  clip-path: var(--chamfer);
}

.page-faq .faq-caption {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(143, 185, 170, 0.9);
  letter-spacing: 0.02em;
}

/* 小屏版面 */
.page-faq .split-block {
  display: grid;
  gap: 26px;
  align-items: start;
}

.page-faq .feat-list {
  display: grid;
  gap: 0;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .feat-list li {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--faq-soft-line);
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .feat-list li:last-child {
  border-bottom: 1px solid var(--faq-soft-line);
}

.page-faq .feat-list li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 7px;
  background: var(--mint);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

.page-faq .feat-list strong {
  display: block;
  margin-bottom: 3px;
  color: var(--paper);
  font-weight: 600;
}

.page-faq .seg-demo {
  margin-top: 24px;
  padding: 16px;
  background: linear-gradient(130deg, rgba(12, 42, 32, 0.95), rgba(7, 26, 20, 0.72));
  border: 1px solid var(--faq-soft-line);
  clip-path: var(--chamfer-sm);
}

.page-faq .seg-demo-label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .seg-demo-track {
  display: flex;
  gap: 6px;
  margin-top: 10px;
  padding: 4px;
  background: rgba(7, 26, 20, 0.9);
  border: 1px solid rgba(22, 74, 58, 0.7);
  clip-path: var(--chamfer-sm);
}

.page-faq .seg-item {
  flex: 1 1 0;
  min-width: 0;
  padding: 9px 4px;
  text-align: center;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-faq .seg-item.is-on {
  background: var(--mint);
  color: var(--ink-900);
  font-weight: 700;
}

/* 问答双栏 */
.page-faq .faq-hub {
  display: grid;
  gap: 22px;
}

.page-faq .faq-index {
  display: flex;
  gap: 8px;
  padding: 0 0 10px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-tab {
  flex: 0 0 auto;
  display: grid;
  gap: 2px;
  min-height: 48px;
  padding: 11px 16px;
  scroll-snap-align: start;
  text-align: left;
  font-family: var(--font-body);
  background: rgba(12, 42, 32, 0.72);
  border: 1px solid var(--faq-soft-line);
  color: var(--mist);
  cursor: pointer;
  clip-path: var(--chamfer-sm);
  transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-tab-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  opacity: 0.72;
}

.page-faq .faq-tab-name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: inherit;
}

.page-faq .faq-tab-sub {
  font-size: 12px;
  line-height: 1.4;
  opacity: 0.82;
}

.page-faq .faq-tab:hover {
  border-color: var(--mint);
  color: var(--paper);
}

.page-faq .faq-tab[aria-selected="true"] {
  background: var(--mint);
  border-color: var(--mint);
  color: var(--ink-900);
}

.page-faq .faq-tab[aria-selected="true"] .faq-tab-num,
.page-faq .faq-tab[aria-selected="true"] .faq-tab-sub {
  color: rgba(7, 26, 20, 0.72);
  opacity: 1;
}

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

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

.page-faq .panel-index {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mint);
}

.page-faq .faq-item {
  border-top: 1px solid var(--faq-soft-line);
}

.page-faq .faq-item:last-child {
  border-bottom: 1px solid var(--faq-soft-line);
}

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) 20px;
  gap: 12px;
  align-items: start;
  min-height: 48px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-idx {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  color: rgba(143, 185, 170, 0.75);
}

.page-faq .faq-q {
  font-size: 15px;
  line-height: 1.6;
  font-weight: 500;
  color: var(--paper);
  transition: color 0.18s ease;
}

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

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

.page-faq .faq-sign {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 5px;
  justify-self: end;
}

.page-faq .faq-sign::before,
.page-faq .faq-sign::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--mint);
  transform: translateY(-50%);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.page-faq .faq-sign::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .faq-item[open] .faq-sign::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: 0;
}

.page-faq .faq-a {
  padding: 0 0 20px clamp(0px, 3vw, 38px);
}

.page-faq .faq-a p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

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

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

/* 状态图例 */
.page-faq .status-band {
  display: grid;
  gap: 22px;
  padding: clamp(20px, 4vw, 32px);
  background:
    linear-gradient(120deg, rgba(61, 255, 182, 0.06), transparent 55%),
    linear-gradient(180deg, rgba(12, 42, 32, 0.96), rgba(7, 26, 20, 0.7));
  border: 1px solid var(--faq-soft-line);
  clip-path: var(--chamfer);
}

.page-faq .status-band-head .section-note {
  margin-top: 10px;
}

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

.page-faq .status-legend li {
  display: grid;
  gap: 6px;
  align-content: start;
  padding: 14px;
  background: rgba(7, 26, 20, 0.62);
  border: 1px solid rgba(22, 74, 58, 0.8);
  clip-path: var(--chamfer-sm);
}

.page-faq .status-legend .status-dot {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 0;
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-faq .status-legend .status-dot.is-ok {
  background: var(--mint);
  box-shadow: 0 0 0 4px rgba(61, 255, 182, 0.14);
}

.page-faq .status-legend .status-dot.is-warn {
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 179, 71, 0.14);
}

.page-faq .status-legend .status-dot.is-alert {
  background: var(--coral);
  box-shadow: 0 0 0 4px rgba(255, 107, 90, 0.14);
}

.page-faq .status-legend strong {
  color: var(--paper);
  font-size: 14.5px;
  font-weight: 600;
}

.page-faq .status-legend li > span:last-child {
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--mist);
}

/* 联系准备 */
.page-faq .prep-grid {
  display: grid;
  gap: 26px;
  align-items: start;
}

.page-faq .prep-list {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .prep-list li {
  position: relative;
  padding: 14px 16px 14px 42px;
  background: rgba(12, 42, 32, 0.72);
  border: 1px solid var(--faq-soft-line);
  clip-path: var(--chamfer-sm);
  font-size: 13.8px;
  line-height: 1.66;
  color: var(--mist);
}

.page-faq .prep-list li::before {
  content: attr(data-k);
  position: absolute;
  left: 14px;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mint);
}

.page-faq .prep-list strong {
  display: block;
  margin-bottom: 3px;
  color: var(--paper);
  font-size: 14px;
  font-weight: 600;
}

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

.page-faq .prep-card {
  display: grid;
  gap: 14px;
  padding: clamp(20px, 3.4vw, 28px);
  background:
    linear-gradient(150deg, rgba(61, 255, 182, 0.07), transparent 60%),
    var(--ink-800);
  border: 1px solid var(--faq-soft-line);
  clip-path: var(--chamfer);
}

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

.page-faq .contact-line {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.page-faq .contact-key {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: rgba(143, 185, 170, 0.85);
}

.page-faq .contact-val {
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.6;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .prep-note {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid rgba(22, 74, 58, 0.7);
  font-size: 12.8px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .prep-note a {
  color: var(--mint);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 页尾注 */
.page-faq .faq-footnote {
  padding-top: 6px;
  padding-bottom: clamp(30px, 5vw, 52px);
}

.page-faq .faq-footnote p {
  margin: 0;
  max-width: 70ch;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(143, 185, 170, 0.9);
}

.page-faq .faq-footnote a {
  color: var(--mint);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 响应式 */
@media (min-width: 600px) {
  .page-faq .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .status-legend {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1fr) 268px;
    gap: 44px;
  }

  .page-faq .entry-flow {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
  }

  .page-faq .split-block {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 44px;
  }

  .page-faq .faq-hub {
    grid-template-columns: 272px minmax(0, 1fr);
    gap: 40px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 88px;
    flex-direction: column;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-tab {
    width: 100%;
  }

  .page-faq .status-band {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 36px;
    align-items: start;
  }

  .page-faq .prep-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-figure--square {
    margin-top: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
<<<END>>>