.page-faq {
  --faq-sec-space: clamp(48px, 7vw, 88px);
  --faq-line-soft: 1px solid rgba(217, 190, 155, 0.6);
  background: var(--paper);
  color: var(--ink);
}

.page-faq .nb-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--brown);
}

.page-faq .nb-crumbs a {
  color: var(--brown);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.page-faq .nb-crumbs__sep {
  color: var(--gold);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(28px, 5vw, 56px) clamp(32px, 5vw, 60px);
  background: radial-gradient(120% 96% at 92% -18%, rgba(240, 122, 19, 0.1), transparent 62%);
}

.page-faq .faq-hero .nb-kicker {
  margin-top: clamp(20px, 4vw, 36px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  max-width: 20em;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(30px, 6.4vw, 68px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-hero__lead {
  margin: 22px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.85;
  color: var(--brown);
}

.page-faq .faq-hero__strip {
  margin-top: clamp(28px, 5vw, 48px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--clay);
  border: 1px solid var(--clay);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-faq .faq-hero__cell {
  background: var(--paper);
  padding: 16px 18px;
}

.page-faq .faq-hero__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1;
  color: var(--brown);
}

.page-faq .faq-hero__label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

/* ---------- 布局与左侧目录 ---------- */
.page-faq .faq-layout {
  display: block;
  padding-block: clamp(28px, 4vw, 48px) clamp(52px, 8vw, 100px);
}

.page-faq .faq-rail {
  margin-bottom: 20px;
}

.page-faq .faq-rail__nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
}

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

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  flex: 0 0 auto;
  padding: 8px 14px;
  border: 1px solid var(--clay);
  border-radius: var(--radius-pill);
  background: var(--white);
  color: var(--brown);
  font-size: 13px;
  line-height: 1.3;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

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

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

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

/* ---------- 通用区块 ---------- */
.page-faq .faq-sec {
  padding-block: var(--faq-sec-space);
  border-top: 1px solid var(--clay);
}

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

.page-faq .faq-sec__head {
  max-width: 64ch;
}

.page-faq .faq-sec__num {
  display: inline-block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .faq-sec__num::after {
  content: "";
  display: inline-block;
  width: 36px;
  height: 1px;
  margin-left: 10px;
  vertical-align: middle;
  background: var(--gold);
}

.page-faq .faq-sec__head h2 {
  margin: 0;
  line-height: 1.24;
}

.page-faq .faq-sec__intro {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--brown);
}

.page-faq .faq-sec__tail {
  margin: 20px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--brown);
}

.page-faq .faq-link {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(20, 125, 140, 0.35);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.page-faq .faq-link--invert {
  color: var(--teal-lift);
  border-bottom-color: rgba(79, 195, 209, 0.4);
}

.page-faq .faq-link--invert:hover,
.page-faq .faq-link--invert:focus-visible {
  color: var(--white);
  border-bottom-color: var(--amber);
}

/* ---------- 01 现象分类 ---------- */
.page-faq .faq-cats {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}

.page-faq .faq-cat {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 22px 18px;
  border: 1px solid var(--clay);
  border-radius: var(--radius-md);
  background: var(--white);
  color: inherit;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-cat:hover {
  border-color: var(--amber);
  box-shadow: 0 18px 34px -26px rgba(30, 23, 18, 0.55);
}

.page-faq .faq-cat:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 3px;
}

.page-faq .faq-cat__tag {
  align-self: flex-start;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--brown);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
}

.page-faq .faq-cat__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-cat p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--brown);
}

.page-faq .faq-cat__go {
  margin-top: auto;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--teal);
}

/* ---------- 02 设备清单 ---------- */
.page-faq .faq-sec .nb-figure {
  margin: 30px 0 0;
}

.page-faq .nb-figure__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .nb-figure__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-faq .faq-device {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 30px;
}

.page-faq .faq-filter {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .faq-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border: 1px solid var(--clay);
  border-radius: var(--radius-pill);
  background: var(--white);
  color: var(--brown);
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.page-faq .faq-filter:checked + .faq-pill {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--white);
}

.page-faq .faq-filter:focus-visible + .faq-pill {
  outline: 3px solid var(--amber);
  outline-offset: 2px;
}

.page-faq #faq-f-android:checked ~ .faq-table-wrap tbody tr:not([data-os="android"]) {
  display: none;
}

.page-faq #faq-f-harmony:checked ~ .faq-table-wrap tbody tr:not([data-os="harmony"]) {
  display: none;
}

.page-faq #faq-f-gesture:checked ~ .faq-table-wrap tbody tr:not([data-nav="gesture"]) {
  display: none;
}

.page-faq #faq-f-keys:checked ~ .faq-table-wrap tbody tr:not([data-nav="keys"]) {
  display: none;
}

.page-faq .faq-table-wrap {
  width: 100%;
  max-width: 100%;
  margin-top: 16px;
  overflow-x: auto;
  border: 1px solid var(--clay);
  border-radius: var(--radius-md);
  background: var(--white);
}

.page-faq .faq-device .faq-table-wrap {
  flex: 0 0 100%;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 720px;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 14px;
}

.page-faq .faq-table--compact {
  min-width: 580px;
}

.page-faq .faq-table caption {
  caption-side: top;
  padding: 14px 18px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
  border-bottom: 1px solid var(--clay);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid rgba(217, 190, 155, 0.55);
}

.page-faq .faq-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--sand);
  color: var(--brown);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.page-faq .faq-table tbody th {
  position: sticky;
  left: 0;
  z-index: 1;
  min-width: 138px;
  background: var(--sand);
  color: var(--ink);
  font-weight: 700;
  white-space: nowrap;
}

.page-faq .faq-table tbody tr:last-child th,
.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-table tbody tr:hover th,
.page-faq .faq-table tbody tr:hover td {
  background: rgba(241, 228, 207, 0.7);
}

.page-faq .faq-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  vertical-align: middle;
  background: var(--gold);
}

.page-faq .faq-dot--teal {
  background: var(--teal);
}

.page-faq .faq-dot--amber {
  background: var(--amber);
}

.page-faq .nb-note {
  margin-top: 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--brown);
}

/* ---------- 03 五步确认 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
}

.page-faq .faq-steps li {
  position: relative;
  padding: 0 0 30px 64px;
}

.page-faq .faq-steps li::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 48px;
  bottom: 2px;
  width: 1px;
  background: var(--clay);
}

.page-faq .faq-steps li:last-child {
  padding-bottom: 0;
}

.page-faq .faq-steps li:last-child::before {
  display: none;
}

.page-faq .faq-steps__num {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--clay);
  border-radius: var(--radius-pill);
  background: var(--white);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--brown);
}

.page-faq .faq-steps__title {
  margin: 8px 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-steps p {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--brown);
}

/* ---------- 04 大号 04 ---------- */
.page-faq .faq-sec--anchor4 {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-inline: 0;
}

.page-faq .faq-sec--anchor4::before {
  content: "04";
  position: absolute;
  top: -0.06em;
  right: -0.02em;
  z-index: 0;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(170px, 32vw, 330px);
  line-height: 0.82;
  letter-spacing: -0.05em;
  color: var(--brown);
  opacity: 0.08;
  pointer-events: none;
  user-select: none;
}

.page-faq .faq-sec--anchor4 .faq-sec__head,
.page-faq .faq-anchor4 {
  position: relative;
  z-index: 1;
}

.page-faq .faq-details-list {
  margin-top: 30px;
  border-top: 1px solid var(--clay);
}

.page-faq .faq-details {
  border-bottom: 1px solid var(--clay);
}

.page-faq .faq-details summary {
  display: block;
  position: relative;
  padding: 16px 46px 16px 18px;
  border-left: 3px solid transparent;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

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

.page-faq .faq-details summary:hover {
  background: rgba(241, 228, 207, 0.55);
}

.page-faq .faq-details summary:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: -3px;
}

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

.page-faq .faq-details summary::after {
  content: "+";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--gold);
}

.page-faq .faq-details[open] summary::after {
  content: "\2212";
  color: var(--amber);
}

.page-faq .faq-details__body {
  padding: 0 20px 20px 21px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--brown);
}

.page-faq .faq-details__body p {
  margin: 0 0 10px;
  max-width: 62ch;
}

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

.page-faq .faq-v4-figure {
  max-width: 560px;
  margin: 32px 0 0;
}

/* ---------- 05 导出 ---------- */
.page-faq .faq-table-wrap--compact {
  margin-top: 30px;
}

/* ---------- 尾部面板 ---------- */
.page-faq .faq-panel {
  margin-top: 20px;
  padding: clamp(24px, 4vw, 36px);
  border: 1px solid var(--clay);
  border-radius: var(--radius-md);
  background: var(--sand);
}

.page-faq .faq-panel h2 {
  margin: 0;
  line-height: 1.4;
}

.page-faq .faq-panel__lead {
  margin: 12px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--brown);
}

.page-faq .faq-panel__note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--brown);
}

.page-faq .faq-checklist {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
}

.page-faq .faq-checklist li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.58em;
  width: 10px;
  height: 10px;
  border: 2px solid var(--amber);
  border-radius: 3px;
}

.page-faq .faq-copy-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(217, 190, 155, 0.7);
}

.page-faq .faq-copy-row__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-faq .faq-panel--dark {
  background: var(--deep);
  border-color: var(--deep);
  color: var(--paper);
}

.page-faq .faq-panel--dark h2,
.page-faq .faq-panel--dark .faq-panel__lead,
.page-faq .faq-panel--dark .faq-panel__note {
  color: var(--paper);
}

.page-faq .faq-panel--dark .faq-panel__lead,
.page-faq .faq-panel--dark .faq-panel__note {
  color: rgba(255, 253, 248, 0.82);
}

.page-faq .faq-facts {
  list-style: none;
  display: grid;
  gap: 16px;
  margin: 24px 0 0;
  padding: 0;
}

.page-faq .faq-facts li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(217, 190, 155, 0.28);
}

.page-faq .faq-facts li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-facts__num {
  min-width: 88px;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  color: var(--teal-lift);
}

.page-faq .faq-facts li span:last-child {
  flex: 1 1 12em;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 253, 248, 0.86);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-faq .faq-cats .faq-cat:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-cats .faq-cat:first-child {
    grid-column: auto;
  }

  .page-faq .faq-cat:nth-child(2) {
    margin-top: 22px;
  }

  .page-faq .faq-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-facts li {
    display: block;
    padding-bottom: 0;
    border-bottom: 0;
  }

  .page-faq .faq-facts li span:last-child {
    display: block;
    margin-top: 10px;
  }
}

@media (min-width: 1060px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: 176px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
    margin-bottom: 0;
  }

  .page-faq .faq-rail__nav {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    padding: 10px 0 10px 14px;
    font-size: 14px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .faq-pill,
  .page-faq .faq-rail__link,
  .page-faq .nb-crumbs a,
  .page-faq .faq-link {
    transition: none;
  }

  .page-faq .faq-cat:hover {
    box-shadow: none;
  }
}
<<<END>>>