.page-faq {
  --faq-accent: var(--flare);
  --faq-pad-x: 18px;
  display: block;
  color: var(--text);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 20px var(--faq-pad-x) 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 140% at 88% 0%, rgba(255, 106, 26, .17) 0%, rgba(255, 106, 26, 0) 54%),
    linear-gradient(152deg, var(--ink) 0%, var(--ink-deep) 60%, var(--felt) 100%);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--ink) 0 34%, var(--flare) 34% 68%, var(--ping) 68% 100%);
  opacity: .85;
}

.page-faq .faq-hero-grid {
  position: relative;
  z-index: 1;
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 40px var(--faq-pad-x) 48px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: center;
}

.page-faq .faq-kicker {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--flare);
}

.page-faq .faq-hero-copy h1 {
  margin: 0 0 18px;
  font-family: var(--sans);
  font-weight: 900;
  font-size: clamp(1.85rem, 5.4vw, 3.35rem);
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--text-strong);
}

.page-faq .faq-lede {
  margin: 0 0 26px;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-dim);
}

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

.page-faq .faq-hero-visual {
  display: grid;
  gap: 18px;
  min-width: 0;
}

.page-faq .faq-hero-img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid rgba(228, 237, 236, .14);
  filter: saturate(.72) contrast(1.04);
}

.page-faq .faq-hero-facts {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(96px, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-fact {
  padding: 12px 10px;
  background: rgba(7, 38, 40, .74);
}

.page-faq .faq-fact dt {
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--text-dim);
}

.page-faq .faq-fact dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--flare);
}

/* ---------- 主体栅格 ---------- */
.page-faq .faq-layout {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 36px var(--faq-pad-x) 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

/* ---------- 问题索引 ---------- */
.page-faq .faq-index {
  border-top: 1px solid var(--line-soft);
  padding-top: 16px;
  min-width: 0;
}

.page-faq .faq-index-title {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--mist);
}

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

.page-faq .faq-index-item {
  flex: 0 0 auto;
}

.page-faq .faq-index-link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 12px;
  border-radius: var(--radius);
  border-left: 0;
  border-bottom: 3px solid transparent;
  white-space: nowrap;
  font-size: 14px;
  color: var(--text-dim);
  text-decoration: none;
  transition: color .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-index-num {
  font-size: 11px;
  color: var(--mist);
  transition: color .18s var(--ease);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--text-strong);
  background: rgba(47, 196, 178, .08);
  border-bottom-color: var(--ping);
}

.page-faq .faq-index-link:focus-visible {
  outline: 2px solid var(--flare);
  outline-offset: 2px;
}

.page-faq .faq-index-link:hover .faq-index-num,
.page-faq .faq-index-link:focus-visible .faq-index-num {
  color: var(--ping);
}

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

.page-faq .faq-group {
  margin: 0 0 46px;
  scroll-margin-top: 88px;
}

.page-faq .faq-group--pick { --accent: var(--flare); }
.page-faq .faq-group--custom { --accent: var(--ping); }
.page-faq .faq-group--auth { --accent: var(--flare-soft); }
.page-faq .faq-group--warranty { --accent: var(--rubber); }
.page-faq .faq-group--docs { --accent: var(--mist); }

.page-faq .faq-group-head {
  position: relative;
  padding-left: 18px;
  margin-bottom: 16px;
}

.page-faq .faq-group-head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 4px;
  height: calc(100% - 12px);
  background: var(--accent);
  border-radius: 2px;
  transition: top .22s var(--ease), height .22s var(--ease);
}

.page-faq .faq-group:has(details[open]) .faq-group-head::before {
  top: 0;
  height: 100%;
}

.page-faq .faq-group-num {
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--accent);
}

.page-faq .faq-group-title {
  margin: 0 0 8px;
  font-size: clamp(1.22rem, 3.2vw, 1.68rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-strong);
}

.page-faq .faq-group-note {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-dim);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  border-bottom: 1px solid var(--line-soft);
}

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

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 6px;
  cursor: pointer;
  list-style: none;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.65;
  color: var(--text-strong);
  transition: color .18s var(--ease), background .18s var(--ease);
}

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

.page-faq .faq-q:hover {
  color: var(--accent);
  background: rgba(251, 253, 252, .03);
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--flare);
  outline-offset: 2px;
  border-radius: 2px;
}

.page-faq .faq-mark {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 5px;
  border: 1px solid var(--line);
  border-radius: 2px;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: var(--accent);
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.page-faq .faq-mark::before {
  left: 50%;
  top: 3px;
  bottom: 3px;
  width: 1.5px;
  transform: translateX(-50%);
}

.page-faq .faq-mark::after {
  top: 50%;
  left: 3px;
  right: 3px;
  height: 1.5px;
  transform: translateY(-50%);
}

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

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

.page-faq .faq-a {
  padding: 0 6px 20px 32px;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text);
}

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

/* ---------- 章节配图 ---------- */
.page-faq .faq-media {
  margin: 22px 0 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  filter: saturate(.82);
}

.page-faq .faq-media figcaption {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 三档对照 ---------- */
.page-faq .faq-matrix {
  margin-top: 10px;
  padding: 44px var(--faq-pad-x) 8px;
  border-top: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(20, 103, 106, .26) 0%, rgba(7, 38, 40, 0) 100%);
}

.page-faq .faq-matrix-inner {
  max-width: var(--max-w-wide);
  margin: 0 auto;
}

.page-faq .faq-matrix-head {
  margin-bottom: 22px;
  max-width: 62ch;
}

.page-faq .faq-matrix-title {
  margin: 0 0 10px;
  font-size: clamp(1.24rem, 3.4vw, 1.8rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-strong);
}

.page-faq .faq-matrix-note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-faq .warranty-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(7, 38, 40, .58);
}

.page-faq .warranty-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-faq .warranty-table th,
.page-faq .warranty-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  line-height: 1.72;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .warranty-table thead th {
  background: var(--ink-deep);
  border-bottom-color: var(--line);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--text-dim);
  white-space: nowrap;
}

.page-faq .warranty-table tbody th {
  font-weight: 700;
  color: var(--text-strong);
  white-space: nowrap;
}

.page-faq .warranty-table tbody td {
  color: var(--text);
}

.page-faq .warranty-table tbody td.num {
  color: var(--flare);
  font-weight: 700;
  white-space: nowrap;
}

.page-faq .warranty-table tbody tr {
  transition: opacity .18s var(--ease), background .18s var(--ease);
}

.page-faq .warranty-table tbody:hover tr {
  opacity: .42;
}

.page-faq .warranty-table tbody tr:hover {
  opacity: 1;
  background: rgba(255, 106, 26, .09);
}

.page-faq .warranty-table tbody tr:last-child th,
.page-faq .warranty-table tbody tr:last-child td {
  border-bottom: none;
}

.page-faq .warranty-table tbody tr.is-cross th {
  color: var(--text-strong);
}

.page-faq .warranty-table .tag {
  margin-left: 8px;
}

/* ---------- 联系 ---------- */
.page-faq .faq-help {
  padding: 42px var(--faq-pad-x) 72px;
}

.page-faq .faq-help-inner {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding: 28px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(122deg, rgba(255, 106, 26, .15) 0%, rgba(20, 103, 106, .24) 46%, rgba(7, 38, 40, .72) 100%);
}

.page-faq .faq-help-title {
  margin: 0 0 12px;
  font-size: clamp(1.3rem, 3.6vw, 1.9rem);
  font-weight: 800;
  line-height: 1.28;
  color: var(--text-strong);
}

.page-faq .faq-help-copy p {
  margin: 0 0 22px;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-help-contact {
  margin: 0;
  display: grid;
  border-top: 1px solid var(--line-soft);
  min-width: 0;
}

.page-faq .faq-help-row {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-help-row dt {
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--text-dim);
}

.page-faq .faq-help-row dd {
  margin: 0;
  font-size: 14.5px;
  color: var(--text-strong);
  word-break: break-word;
}

.page-faq .faq-help-row dd.num {
  color: var(--flare);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 48px;
    padding: 64px 24px 72px;
  }

  .page-faq .faq-help-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, .9fr);
    gap: 44px;
    align-items: center;
    padding: 40px 36px;
  }
}

@media (min-width: 1024px) {
  .page-faq {
    --faq-pad-x: 24px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 54px;
    padding-top: 70px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    align-self: start;
    border-top: 0;
    border-right: 1px solid var(--line);
    padding: 2px 24px 0 0;
  }

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

  .page-faq .faq-index-item {
    flex: 0 0 auto;
  }

  .page-faq .faq-index-link {
    white-space: normal;
    border-bottom: 0;
    border-left: 3px solid transparent;
    padding: 10px 12px;
    line-height: 1.5;
  }

  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible {
    border-bottom-color: transparent;
    border-left-color: var(--ping);
  }

  .page-faq .faq-matrix {
    padding-top: 56px;
  }
}

@media (min-width: 1240px) {
  .page-faq .faq-layout {
    grid-template-columns: 258px minmax(0, 1fr);
    gap: 64px;
  }
}
<<<END>>>