.page-faq {
  background: var(--ink);
  color: var(--paper);
  padding-bottom: 8px;
}

.page-faq .content-wrap {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.page-faq .breadcrumb {
  padding-top: 20px;
}

.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-faq .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--slate);
}

.page-faq .breadcrumb__link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .breadcrumb__link:hover,
.page-faq .breadcrumb__link:focus-visible {
  color: var(--amber-bright);
  border-bottom-color: var(--amber);
}

/* 首屏 */
.page-faq .faq-hero {
  padding: 32px 0 36px;
  border-bottom: 1px solid var(--hairline);
}

.page-faq .section-label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(28px, 7.4vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  transform: scaleX(1.02);
  transform-origin: left center;
  max-width: 20ch;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-hero__mono {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--amber);
  margin-right: 6px;
}

/* 主体布局 */
.page-faq .faq-layout {
  display: grid;
  gap: 28px;
  padding: 32px 0 40px;
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 14px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-pill);
  color: var(--mist);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--amber);
  color: var(--paper);
}

.page-faq .faq-rail__link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.page-faq .faq-rail__link[aria-current="true"] {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
}

.page-faq .faq-rail__link[aria-current="true"] .faq-rail__num {
  color: var(--ink);
}

/* 步骤块 */
.page-faq .faq-step {
  padding-top: 26px;
  margin-top: 34px;
  border-top: 1px solid var(--hairline);
}

.page-faq .faq-step:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-step__kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-faq .faq-step__mono {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: var(--amber);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.page-faq .faq-step__title {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(21px, 5vw, 30px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  max-width: 26ch;
}

.page-faq .faq-step__lead {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-note {
  margin: 16px 0 0;
  padding: 12px 16px;
  border-left: 2px solid var(--signal);
  background: var(--glass);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--paper);
}

/* 动作列表 */
.page-faq .faq-actions {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-act;
}

.page-faq .faq-action {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  background: var(--tiger-black);
  border-left: 2px solid var(--amber);
  border-radius: var(--radius-sm);
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-action:hover {
  background: var(--glass);
  transform: translateY(-2px);
}

.page-faq .faq-action__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--amber);
  padding-top: 2px;
}

.page-faq .faq-action__title {
  margin: 0 0 4px;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.45;
  color: var(--paper);
}

.page-faq .faq-action__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
}

/* 图片 */
.page-faq .faq-figure {
  margin: 30px 0 0;
}

.page-faq .faq-figure--inset {
  margin-top: 22px;
}

.page-faq .media-frame {
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--hairline-soft);
  background: var(--tiger-black);
  position: relative;
}

.page-faq .media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(11, 13, 14, 0) 45%, rgba(11, 13, 14, 0.72) 100%);
  pointer-events: none;
}

.page-faq .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-faq .faq-figure__cap {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
}

/* 折叠项 */
.page-faq .faq-details {
  margin-top: 10px;
  background: var(--tiger-black);
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius-md);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-details:hover {
  border-color: var(--hairline);
}

.page-faq .faq-details[open] {
  border-color: var(--amber);
}

.page-faq .faq-details summary {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 15px 16px;
  list-style: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--paper);
}

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

.page-faq .faq-details summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--amber);
}

.page-faq .faq-details[open] summary::after {
  content: "–";
  color: var(--amber-bright);
}

.page-faq .faq-details summary:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-md);
}

.page-faq .faq-details__body {
  padding: 0 16px 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-details__body p {
  margin: 0 0 8px;
}

.page-faq .faq-details__signal {
  padding-top: 8px;
  border-top: 1px dashed var(--hairline);
  color: var(--paper);
}

/* 自查表 */
.page-faq .faq-filter {
  margin-top: 20px;
}

.page-faq .faq-filter__btn {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin: 0 8px 8px 0;
  padding: 8px 16px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 13px;
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-filter__btn:hover {
  border-color: var(--amber);
  color: var(--paper);
}

.page-faq .faq-filter__btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.page-faq .faq-filter__btn[aria-pressed="true"] {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
  font-weight: 700;
}

.page-faq .faq-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius-md);
  background: var(--tiger-black);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .faq-table__caption {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
  border-bottom: 1px solid var(--hairline-soft);
}

.page-faq .faq-table th {
  padding: 11px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mist);
  border-bottom: 1px solid var(--hairline);
  background: var(--slate);
}

.page-faq .faq-table th:first-child,
.page-faq .faq-table td:first-child {
  padding-left: 16px;
}

.page-faq .faq-table td {
  padding: 13px 14px;
  border-top: 1px solid var(--hairline-soft);
  line-height: 1.6;
  color: var(--paper);
  vertical-align: top;
}

.page-faq .faq-table tbody tr {
  transition: background 0.2s var(--ease);
}

.page-faq .faq-table tbody tr:hover {
  background: var(--glass-strong);
}

.page-faq .faq-table [data-filter-item][hidden] {
  display: none;
}

/* 状态标签 */
.page-faq .status-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
  border: 1px solid transparent;
}

.page-faq .status-tag--ok {
  color: var(--signal);
  border-color: var(--signal);
  background: rgba(61, 214, 196, 0.12);
}

.page-faq .status-tag--warn {
  color: var(--fault);
  border-color: var(--fault);
  background: rgba(255, 107, 61, 0.12);
}

.page-faq .status-tag--info {
  color: var(--paper);
  border-color: var(--slate);
  background: var(--slate);
}

/* 换设备清单 */
.page-faq .faq-device-track {
  display: flex;
  gap: 12px;
  margin-top: 22px;
  padding: 0 0 14px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
}

.page-faq .faq-device-track:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-md);
}

.page-faq .faq-device-card {
  flex: 0 0 auto;
  width: 260px;
  scroll-snap-align: start;
  padding: 18px 16px;
  background: var(--tiger-black);
  border: 1px solid var(--hairline-soft);
  border-top: 2px solid var(--amber);
  border-radius: var(--radius-md);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-device-card:hover {
  transform: translateY(-2px);
  border-color: var(--amber);
}

.page-faq .faq-device-card__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.08em;
}

.page-faq .faq-device-card__title {
  margin: 0 0 8px;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 16px;
  line-height: 1.4;
}

.page-faq .faq-device-card p {
  margin: 0 0 12px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .faq-device-card .status-tag {
  margin-top: 2px;
}

/* 状态说明 */
.page-faq .faq-legend {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-legend__item {
  padding: 16px;
  background: var(--glass);
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius-md);
}

.page-faq .faq-legend__item p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
}

/* 支持 */
.page-faq .faq-support {
  padding-bottom: 4px;
}

.page-faq .faq-support__grid {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-support__card {
  padding: 16px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: var(--tiger-black);
}

.page-faq .faq-support__key {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-support__value {
  display: inline-block;
  min-height: 30px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--slate);
  word-break: break-word;
}

.page-faq .faq-support__value:hover,
.page-faq .faq-support__value:focus-visible {
  color: var(--amber-bright);
  border-bottom-color: var(--amber);
}

.page-faq .faq-support__value:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 2px;
}

.page-faq .faq-support__hint {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .faq-support__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 0;
}

.page-faq .faq-support .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 22px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-support .btn--amber {
  background: var(--amber);
  color: var(--ink);
}

.page-faq .faq-support .btn--amber:hover {
  background: var(--amber-bright);
  transform: translateY(-2px);
}

.page-faq .faq-support .btn--ghost {
  border-color: var(--hairline);
  color: var(--paper);
}

.page-faq .faq-support .btn--ghost:hover {
  border-color: var(--amber);
  color: var(--amber-bright);
  transform: translateY(-2px);
}

.page-faq .faq-support .btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.page-faq .faq-support__aside {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-support__aside a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-support__aside a:hover,
.page-faq .faq-support__aside a:focus-visible {
  border-bottom-color: var(--amber);
}

/* 页尾同页目录 */
.page-faq .faq-index {
  padding: 28px 0 44px;
  border-top: 1px solid var(--hairline);
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius-sm);
  color: var(--paper);
  font-size: 13.5px;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--amber);
  background: var(--glass);
}

.page-faq .faq-index__link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* 桌面端 */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 56px 0 48px;
  }

  .page-faq .faq-hero__lead {
    font-size: 16px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 48px;
    padding: 48px 0 56px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--hairline);
  }

  .page-faq .faq-rail__link {
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    border-color: transparent;
    background: transparent;
    padding: 11px 14px;
    white-space: normal;
    line-height: 1.4;
  }

  .page-faq .faq-rail__link[aria-current="true"] {
    border-color: var(--amber);
    background: var(--amber);
  }

  .page-faq .faq-action {
    grid-template-columns: 44px minmax(0, 1fr);
    padding: 18px 20px;
    gap: 16px;
  }

  .page-faq .faq-step__title {
    font-size: 30px;
  }

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

  .page-faq .faq-support__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-device-card {
    width: 300px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-action,
  .page-faq .faq-device-card,
  .page-faq .faq-support .btn,
  .page-faq .faq-rail__link {
    transition: none;
  }

  .page-faq .faq-action:hover,
  .page-faq .faq-device-card:hover,
  .page-faq .faq-support .btn:hover {
    transform: none;
  }

  .page-faq .faq-device-track {
    scroll-behavior: auto;
  }
}
<<<END>>>