.page-faq {
  background: var(--deep-space);
  color: var(--warm);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 22px 0 56px;
  background:
    radial-gradient(120% 80% at 0% 0%, rgba(53, 214, 232, .16) 0%, rgba(53, 214, 232, 0) 58%),
    linear-gradient(180deg, var(--deep) 0%, var(--deep-space) 100%);
  border-bottom: var(--line) solid rgba(201, 146, 46, .4);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 2;
}

.page-faq .breadcrumbs {
  margin-bottom: 26px;
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(26px, 7.2vw, 64px);
  line-height: 1.06;
  letter-spacing: .01em;
  color: var(--warm);
}

.page-faq .faq-hero__line {
  display: block;
}

.page-faq .faq-hero__strong {
  display: block;
  margin-top: 8px;
  font-weight: 800;
  color: var(--gold);
}

.page-faq .faq-hero__lede {
  max-width: 60ch;
  margin: 24px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 14px;
  border: var(--line) solid rgba(201, 146, 46, .5);
  background: rgba(13, 37, 66, .72);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-faq .faq-hero__facts .mono {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--gold);
}

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

.page-faq .faq-hero__cta .btn {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
}

/* ---------- 排查步骤 ---------- */
.page-faq .faq-steps {
  padding: 52px 0;
  background:
    radial-gradient(70% 60% at 100% 0%, rgba(53, 214, 232, .08), transparent 60%),
    linear-gradient(180deg, var(--deep-space) 0%, #06172b 100%);
}

.page-faq .faq-steps .section-lede {
  max-width: 64ch;
}

.page-faq .faq-steps__visual {
  margin: 30px 0 8px;
}

.page-faq .faq-steps__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 30px;
}

.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: 10px;
  min-height: 44px;
  padding: 10px 14px;
  border: var(--line) solid rgba(201, 146, 46, .38);
  background: rgba(13, 37, 66, .72);
  color: var(--mist);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .2s ease, color .2s ease, background-color .2s ease;
}

.page-faq .faq-rail__link .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--cyan);
  background: rgba(53, 214, 232, .12);
  color: var(--warm);
}

.page-faq .faq-steps__cards {
  display: grid;
  gap: 16px;
}

.page-faq .faq-step {
  border: var(--line) solid rgba(201, 146, 46, .5);
  background: var(--surface-grad);
  box-shadow: var(--shadow-hard-cyan);
  transition: border-color .2s ease, transform .2s ease;
}

.page-faq .faq-step:hover {
  border-color: var(--cyan);
}

.page-faq .step__head {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  min-height: 56px;
  padding: 18px 16px;
  background: transparent;
  border: 0;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.page-faq .step__head:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .step__index {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--gold);
}

.page-faq .step__title {
  flex: 1 1 auto;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--warm);
}

.page-faq .faq-step__chev {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  margin-right: 4px;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: rotate(45deg);
  transition: transform .2s ease, border-color .2s ease;
}

.page-faq .step__head[aria-expanded="false"] .faq-step__chev {
  transform: rotate(-45deg);
}

.page-faq .step__head:hover .faq-step__chev {
  border-color: var(--cyan);
}

.page-faq .step__body {
  margin: 0;
  padding: 16px 16px 20px;
  border-top: var(--line) solid rgba(201, 146, 46, .28);
}

.page-faq .faq-step__facts {
  display: grid;
  gap: 12px;
  margin: 0;
}

.page-faq .faq-step__facts > div {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.page-faq .faq-step__facts dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-faq .faq-step__facts dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-step__facts dd a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 214, 232, .5);
}

.page-faq .faq-step__facts dd a:hover,
.page-faq .faq-step__facts dd a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 版本对照 ---------- */
.page-faq .faq-compare {
  padding: 52px 0;
  background:
    radial-gradient(80% 100% at 100% 0%, rgba(242, 184, 75, .08), transparent 60%),
    var(--deep-space);
  border-top: var(--line) solid rgba(201, 146, 46, .28);
  border-bottom: var(--line) solid rgba(201, 146, 46, .28);
}

.page-faq .faq-compare .section-lede {
  max-width: 64ch;
}

.page-faq .faq-compare__visual {
  margin: 30px 0 26px;
}

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

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(155, 176, 201, .22);
}

.page-faq .faq-table thead th {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--gold);
  white-space: nowrap;
  border-bottom: var(--line) solid var(--gold-line);
}

.page-faq .faq-table tbody th {
  font-weight: 600;
  color: var(--warm);
  white-space: nowrap;
}

.page-faq .faq-table td {
  color: var(--mist);
}

.page-faq .faq-table td.mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--warm);
}

.page-faq .faq-compare__note {
  margin: 22px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-compare__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 214, 232, .5);
}

/* ---------- 版本号位置 ---------- */
.page-faq .faq-version {
  padding: 52px 0;
  background: linear-gradient(180deg, var(--deep-space) 0%, #06172b 100%);
}

.page-faq .faq-version__grid {
  gap: 30px;
}

.page-faq .faq-version__text .section-title {
  margin-bottom: 16px;
}

.page-faq .faq-version__panel {
  padding: 22px;
}

.page-faq .faq-version__panel .panel__title {
  font-size: 17px;
  font-weight: 800;
  color: var(--gold);
  margin: 0 0 4px;
}

.page-faq .faq-version__panel .panel__meta {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-faq .faq-version__list {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-version__list li {
  position: relative;
  padding-left: 20px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-version__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  background: var(--cyan);
  transform: rotate(45deg);
}

/* ---------- 复制组件 ---------- */
.page-faq .copy-chip {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  min-height: 48px;
  padding: 10px 14px;
  border: var(--line) solid var(--gold-line);
  background: rgba(3, 9, 16, .6);
  color: var(--warm);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color .2s ease, background-color .2s ease;
}

.page-faq .copy-chip:hover,
.page-faq .copy-chip:focus-visible {
  border-color: var(--cyan);
  background: rgba(53, 214, 232, .12);
}

.page-faq .copy-chip__value {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .05em;
  color: var(--gold);
  word-break: break-all;
}

.page-faq .copy-chip__hint {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--mist);
  white-space: nowrap;
}

.page-faq .copy-chip[data-copied="true"] {
  border-color: var(--green);
}

.page-faq .copy-chip[data-copied="true"] .copy-chip__hint {
  color: var(--green);
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-contact {
  padding: 52px 0 76px;
  background:
    radial-gradient(90% 120% at 50% 0%, rgba(242, 184, 75, .1), transparent 62%),
    linear-gradient(180deg, var(--deep-space) 0%, var(--deep) 100%);
}

.page-faq .faq-contact__card {
  max-width: 860px;
  margin: 0 auto;
  padding: 28px 20px;
  border: var(--line) solid var(--gold-line);
  background: var(--surface-grad);
  box-shadow: var(--shadow-hard-cyan);
}

.page-faq .faq-contact__card .section-title {
  margin-bottom: 14px;
}

.page-faq .faq-contact__lede {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-contact__rows {
  display: grid;
  gap: 14px;
  margin: 24px 0 0;
}

.page-faq .faq-contact__row {
  display: grid;
  gap: 8px;
}

.page-faq .faq-contact__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-faq .faq-contact__note {
  margin: 24px 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(155, 176, 201, .2);
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-faq .faq-contact__cta .btn {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 34px 0 68px;
  }

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

  .page-faq .faq-step__facts > div {
    grid-template-columns: 80px minmax(0, 1fr);
    gap: 16px;
  }

  .page-faq .faq-contact__card {
    padding: 36px 34px;
  }

  .page-faq .faq-contact__row {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: center;
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-steps,
  .page-faq .faq-compare,
  .page-faq .faq-version {
    padding: 76px 0;
  }

  .page-faq .faq-contact {
    padding: 76px 0 100px;
  }

  .page-faq .faq-steps__layout {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
    margin-top: 40px;
  }

  .page-faq .faq-steps__rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0;
    padding: 0;
    overflow: visible;
  }

  .page-faq .faq-rail__link {
    border: 0;
    border-left: var(--line) solid rgba(201, 146, 46, .4);
    background: transparent;
    padding: 13px 0 13px 18px;
    white-space: normal;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    border-left-color: var(--cyan);
    background: linear-gradient(90deg, rgba(53, 214, 232, .14), transparent);
  }

  .page-faq .faq-steps__visual {
    margin: 36px 0 4px;
  }

  .page-faq .step__head {
    padding: 22px 24px;
  }

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

  .page-faq .step__title {
    font-size: 17px;
  }

  .page-faq .step__body {
    padding: 20px 24px 26px;
  }

  .page-faq .faq-compare__visual {
    margin: 36px 0 30px;
  }

  .page-faq .faq-version__grid {
    gap: 48px;
    align-items: start;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero__title {
    letter-spacing: .02em;
  }
}
</PAGE_CSS>>>