.page-faq {
  --faq-pad-y: clamp(52px, 6vw, 92px);
  --faq-card: var(--ink-800);
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  margin: 0;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.12;
}

.page-faq p {
  margin: 0;
}

/* ---------- 路径条 ---------- */
.page-faq .faq-path {
  border-bottom: 1px solid var(--line);
  background: var(--ink-900);
}

.page-faq .faq-path__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
  padding-top: 14px;
  padding-bottom: 14px;
  font-size: 12px;
}

.page-faq .faq-path .crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--mist);
}

.page-faq .faq-path .crumbs__current {
  color: var(--green);
}

.page-faq .faq-path__meta {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--silver);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--line-strong);
  background:
    radial-gradient(120% 90% at 82% 0%, rgba(59, 224, 166, 0.16), transparent 62%),
    radial-gradient(70% 60% at 8% 100%, rgba(255, 122, 60, 0.12), transparent 70%),
    var(--ink-800);
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.22;
  filter: saturate(0.6) contrast(1.05);
}

.page-faq .faq-hero__inner {
  padding-top: clamp(52px, 7vw, 96px);
  padding-bottom: clamp(44px, 6vw, 80px);
  max-width: 860px;
}

.page-faq .faq-hero .eyebrow {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--green);
  margin-bottom: 18px;
}

.page-faq .faq-hero h1 {
  font-size: clamp(29px, 5.4vw, 58px);
  line-height: 1.06;
  color: var(--paper);
  max-width: 18em;
}

.page-faq .faq-hero__lead {
  margin-top: 20px;
  max-width: 36em;
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--mist);
  line-height: 1.9;
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__tags .tag {
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 5px 10px;
  border: 1px solid var(--line-strong);
  color: var(--mist);
}

.page-faq .faq-hero__tags .tag--green {
  border-color: rgba(59, 224, 166, 0.55);
  color: var(--green);
  background: var(--green-soft);
}

.page-faq .faq-hero__tags .tag--orange {
  border-color: rgba(255, 122, 60, 0.5);
  color: var(--orange);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* ---------- 通用章节 ---------- */
.page-faq .section {
  padding-top: var(--faq-pad-y);
  padding-bottom: var(--faq-pad-y);
}

.page-faq .section--tight {
  padding-top: calc(var(--faq-pad-y) * 0.6);
  padding-bottom: calc(var(--faq-pad-y) * 0.6);
}

.page-faq .faq-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px 18px;
  align-items: start;
  margin-bottom: 34px;
}

.page-faq .faq-head .section__num {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
  padding-top: 8px;
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-head h2 {
  font-size: clamp(23px, 3.4vw, 38px);
  color: var(--paper);
}

.page-faq .faq-head .lead {
  margin-top: 12px;
  max-width: 40em;
  font-size: 15px;
  color: var(--mist);
}

/* ---------- 五步上手 ---------- */
.page-faq .faq-steps {
  background: var(--ink-900);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-steps__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

.page-faq .faq-track {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 20px;
}

.page-faq .faq-step {
  position: relative;
  padding-left: 46px;
  min-height: 34px;
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 34px;
  bottom: -20px;
  width: 1px;
  background: linear-gradient(180deg, rgba(59, 224, 166, 0.6), rgba(95, 119, 137, 0.25));
}

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

.page-faq .faq-step__dot {
  position: absolute;
  left: 0;
  top: 0;
  width: 31px;
  height: 31px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(59, 224, 166, 0.7);
  background: var(--ink-900);
  color: var(--green);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.page-faq .faq-step__title {
  font-size: 17px;
  color: var(--paper);
}

.page-faq .faq-step__desc {
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-steps__fig {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-faq .faq-steps__fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  max-height: 460px;
}

.page-faq .frame {
  position: relative;
  padding: 0;
}

.page-faq .frame__tag {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  padding: 5px 10px;
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--ink-900);
  background: var(--green);
}

/* ---------- 问答 ---------- */
.page-faq .faq-qa {
  background: var(--ink-800);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-qa__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-faq .faq-dir {
  border-top: 2px solid var(--green);
  background: var(--ink-900);
  padding: 18px 20px 22px;
}

.page-faq .faq-dir__label {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--orange);
  margin-bottom: 14px;
}

.page-faq .faq-dir__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-faq .faq-dir__list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 4px;
  font-size: 14px;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 160ms var(--ease), background 160ms var(--ease);
}

.page-faq .faq-dir__list a .mono {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--silver);
}

.page-faq .faq-dir__list a:hover,
.page-faq .faq-dir__list a:focus-visible {
  color: var(--green);
  background: var(--green-soft);
  outline: none;
}

.page-faq .faq-dir__foot {
  margin-top: 18px;
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-dir__foot .ghost-link {
  display: inline-block;
  margin-top: 6px;
  color: var(--green);
  font-size: 13px;
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 224, 166, 0.45);
}

.page-faq .faq-cat {
  margin-bottom: 34px;
  scroll-margin-top: 96px;
}

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

.page-faq .faq-cat__title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 18px;
  color: var(--paper);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-cat__title .mono {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

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

.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 17px 40px 17px 2px;
  position: relative;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 500;
  color: var(--paper);
  transition: color 160ms var(--ease), background 160ms var(--ease);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 22px;
  text-align: center;
  font-family: var(--mono);
  font-size: 16px;
  color: var(--green);
  transition: transform 240ms var(--ease);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--green);
  outline: none;
}

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

.page-faq .faq-item__no {
  flex: none;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--silver);
  padding-top: 2px;
}

.page-faq .faq-item__a {
  padding: 0 40px 20px 38px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .faq-item__a a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 224, 166, 0.4);
}

.page-faq .faq-item__a a:hover {
  border-bottom-color: var(--green);
}

/* ---------- 故障排查表 ---------- */
.page-faq .faq-trouble {
  background: var(--ink-900);
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-tbl thead {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-faq .faq-tbl tbody,
.page-faq .faq-tbl tr,
.page-faq .faq-tbl td {
  display: block;
}

.page-faq .faq-tbl tr {
  border: 1px solid var(--line);
  background: var(--ink-800);
  margin-bottom: 12px;
  padding: 6px 16px 12px;
}

.page-faq .faq-tbl td {
  position: relative;
  padding: 7px 0 7px 84px;
  color: var(--mist);
  line-height: 1.7;
}

.page-faq .faq-tbl td::before {
  content: attr(data-label);
  position: absolute;
  left: 0;
  top: 9px;
  width: 74px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--silver);
}

.page-faq .faq-tbl td:first-child {
  color: var(--paper);
  font-weight: 500;
}

.page-faq .faq-tbl th {
  text-align: left;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--silver);
  padding: 12px 18px;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 7px;
  vertical-align: middle;
}

.page-faq .faq-dot--green {
  background: var(--green);
  box-shadow: 0 0 0 3px var(--green-soft);
}

.page-faq .faq-dot--orange {
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 122, 60, 0.16);
}

/* ---------- 联系提示 ---------- */
.page-faq .faq-help {
  background:
    linear-gradient(8deg, rgba(6, 23, 37, 0.98) 0%, rgba(11, 34, 51, 0.98) 100%);
  padding-bottom: calc(var(--faq-pad-y) * 1.1);
}

.page-faq .faq-help__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  border: 1px solid var(--line-strong);
  background: var(--oldpaper);
  color: var(--ink-900);
  padding: clamp(24px, 4vw, 46px);
}

.page-faq .faq-help__num {
  display: block;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: #9a4a1c;
  margin-bottom: 12px;
}

.page-faq .faq-help__main h2 {
  font-size: clamp(22px, 3.2vw, 34px);
  color: var(--ink-900);
}

.page-faq .faq-help__main p {
  margin-top: 14px;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.9;
  color: #3a4a55;
}

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

.page-faq .faq-help__actions .btn--quiet {
  color: var(--ink-900);
  border-color: rgba(6, 23, 37, 0.35);
}

.page-faq .faq-help__list {
  margin: 0;
  display: grid;
  gap: 0;
  align-content: start;
}

.page-faq .faq-help__row {
  display: grid;
  gap: 2px;
  padding: 12px 0;
  border-top: 1px solid rgba(6, 23, 37, 0.18);
}

.page-faq .faq-help__row dt {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: #6b7a85;
}

.page-faq .faq-help__row dd {
  margin: 0;
  font-size: 14px;
  color: var(--ink-900);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-step {
    padding-left: 0;
    padding-top: 48px;
    min-height: 0;
  }

  .page-faq .faq-step::before {
    display: none;
  }

  .page-faq .faq-step__dot {
    top: 0;
    left: 0;
  }

  .page-faq .faq-track {
    position: relative;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
  }

  .page-faq .faq-track::before {
    content: "";
    position: absolute;
    top: 15px;
    left: 4%;
    right: 4%;
    height: 1px;
    background: linear-gradient(90deg, rgba(59, 224, 166, 0.75), rgba(255, 122, 60, 0.45));
  }

  .page-faq .faq-tbl thead {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip-path: none;
    display: table-header-group;
  }

  .page-faq .faq-tbl tbody {
    display: table-row-group;
  }

  .page-faq .faq-tbl tr {
    display: table-row;
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent;
    transition: background 160ms var(--ease);
  }

  .page-faq .faq-tbl tr:hover {
    background: var(--ink-700);
  }

  .page-faq .faq-tbl td {
    display: table-cell;
    padding: 16px 18px;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
  }

  .page-faq .faq-tbl td::before {
    display: none;
  }

  .page-faq .faq-help__panel {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-help__list {
    border-left: 1px solid rgba(6, 23, 37, 0.18);
    padding-left: 32px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-steps__grid {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-steps__fig {
    margin-top: 4px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-qa__grid {
    grid-template-columns: 252px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-dir {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-item__a {
    padding-right: 64px;
  }
}
<<<END>>>