.page-faq {
  overflow-x: hidden;
}

/* ============ 面包屑 ============ */
.page-faq .breadcrumbs {
  padding-top: 20px;
  font-size: 13px;
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(48px, 8vw, 112px) 0 clamp(44px, 6.5vw, 88px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
  filter: saturate(0.75);
  z-index: 0;
}

.page-faq .faq-hero__veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(120% 90% at 88% 4%, rgba(0, 240, 255, 0.16), transparent 58%),
    radial-gradient(100% 80% at 4% 100%, rgba(0, 102, 255, 0.2), transparent 62%),
    linear-gradient(180deg, rgba(10, 14, 26, 0.74) 0%, rgba(10, 14, 26, 0.95) 76%, var(--ink-deep) 100%);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 860px;
}

.page-faq .faq-hero__title {
  margin: 0;
  font-size: clamp(30px, 6.2vw, 58px);
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.page-faq .faq-hero__lede {
  max-width: 58ch;
  color: var(--text-soft);
}

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

.page-faq .faq-hero__meta {
  list-style: none;
  margin: 12px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 32px;
  font-size: 13px;
  color: var(--text-soft);
  letter-spacing: 0.02em;
}

.page-faq .faq-hero__meta .mono {
  color: var(--cyan);
  font-size: 14px;
  margin-right: 4px;
}

/* ============ 场景区 ============ */
.page-faq .faq-scenes {
  position: relative;
}

.page-faq .faq-scenes__head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 640px;
  margin-bottom: 32px;
}

.page-faq .faq-scenes__title {
  margin: 0;
}

.page-faq .faq-scenes__lede {
  margin: 0;
  color: var(--text-soft);
  max-width: 56ch;
}

/* ============ 标签页 ============ */
.page-faq .faq-tabs {
  position: relative;
}

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

.page-faq .faq-tabs__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.page-faq .faq-tabs__tab {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(16, 26, 49, 0.72);
  color: var(--text-soft);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: border-color 180ms ease, color 180ms ease, background 180ms ease;
}

.page-faq .faq-tabs__tab:hover {
  border-color: var(--line-strong);
  color: var(--text);
}

.page-faq #faq-scene-login:checked ~ .faq-tabs__nav label[for="faq-scene-login"],
.page-faq #faq-scene-open:checked ~ .faq-tabs__nav label[for="faq-scene-open"],
.page-faq #faq-scene-archive:checked ~ .faq-tabs__nav label[for="faq-scene-archive"],
.page-faq #faq-scene-push:checked ~ .faq-tabs__nav label[for="faq-scene-push"] {
  color: var(--ink-deep);
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  border-color: var(--cyan);
}

.page-faq .faq-tabs__panel {
  display: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(16, 26, 49, 0.55);
  padding: clamp(20px, 3.5vw, 36px);
}

.page-faq #faq-scene-login:checked ~ .faq-tabs__panels .faq-tabs__panel--login,
.page-faq #faq-scene-open:checked ~ .faq-tabs__panels .faq-tabs__panel--open,
.page-faq #faq-scene-archive:checked ~ .faq-tabs__panels .faq-tabs__panel--archive,
.page-faq #faq-scene-push:checked ~ .faq-tabs__panels .faq-tabs__panel--push {
  display: block;
}

.page-faq .faq-tabs__intro {
  margin: 0 0 24px;
  color: var(--text-soft);
  max-width: 68ch;
}

/* ============ 编号步骤 ============ */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 16px;
  padding: 20px 0;
}

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

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

.page-faq .faq-steps__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-faq .faq-steps__title {
  margin: 0 0 6px;
  font-size: 17px;
  line-height: 1.4;
}

.page-faq .faq-steps__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-faq .faq-steps__body a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ============ 设备与版本 ============ */
.page-faq .faq-devices__grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-devices__copy {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-devices__title {
  margin: 0;
}

.page-faq .faq-devices__lede {
  margin: 0;
  color: var(--text-soft);
  max-width: 58ch;
}

.page-faq .faq-devices__tablewrap {
  overflow-x: auto;
  margin-top: 8px;
}

.page-faq .faq-devices__table {
  width: 100%;
  min-width: 460px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .faq-devices__caption {
  text-align: left;
  padding: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gray);
}

.page-faq .faq-devices__table th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--cyan);
  padding: 10px 14px 10px 0;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-devices__table th:last-child,
.page-faq .faq-devices__table td:last-child {
  padding-right: 0;
}

.page-faq .faq-devices__table td {
  padding: 16px 14px 16px 0;
  vertical-align: top;
  line-height: 1.7;
  color: var(--text-soft);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-devices__table tbody tr:last-child td {
  border-bottom: none;
}

.page-faq .faq-devices__table td.mono {
  color: var(--text);
  font-size: 13px;
  white-space: nowrap;
}

.page-faq .faq-devices__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(16, 26, 49, 0.6);
}

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

.page-faq .faq-devices__note {
  margin: 0;
  padding: 14px 16px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-soft);
  border-top: 1px solid var(--line);
}

/* ============ 联系区 ============ */
.page-faq .faq-help {
  position: relative;
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-help__copy {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-help__title {
  margin: 0;
}

.page-faq .faq-help__copy > p {
  margin: 0;
  color: var(--text-soft);
  max-width: 58ch;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.page-faq .faq-help__links {
  font-size: 13px;
  color: var(--gray);
}

.page-faq .faq-help__links a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-help__plate {
  margin: 0;
}

.page-faq .faq-help__plate-note {
  margin-top: 10px;
  font-size: 13px;
  opacity: 0.78;
}

/* ============ 响应式 ============ */
@media (min-width: 720px) {
  .page-faq .faq-steps__item {
    grid-template-columns: 48px 1fr;
    gap: 22px;
    padding: 24px 0;
  }

  .page-faq .faq-steps__num {
    width: 40px;
    height: 40px;
  }

  .page-faq .faq-steps__title {
    font-size: 18px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-devices__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: 1.15fr 1fr;
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-hero__meta {
    gap: 12px 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tabs__tab {
    transition: none;
  }
}
</main>