.page-faq {
  --faq-line: rgba(155, 243, 232, 0.16);
  --faq-line-soft: rgba(155, 243, 232, 0.09);
  --faq-panel: rgba(14, 36, 64, 0.94);
  display: block;
  position: relative;
  padding-bottom: 56px;
  color: var(--body-copy);
  font-family: var(--font-body);
  background-color: var(--ink-950);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px, 48px 48px;
}

.page-faq .breadcrumbs {
  padding-top: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 34px;
  border-bottom: 1px solid var(--ink-600);
  background:
    radial-gradient(120% 100% at 8% 0%, rgba(44, 230, 210, 0.12), transparent 58%),
    radial-gradient(90% 80% at 100% 6%, rgba(255, 122, 46, 0.09), transparent 62%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  width: 100%;
  background: var(--grad-key);
  opacity: 0.7;
  transform-origin: left center;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.page-faq .faq-hero h1 {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-size: clamp(27px, 7vw, 46px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper-50);
}

.page-faq .faq-hero__lede {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--body-copy);
}

.page-faq .faq-jump {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-jump a {
  display: inline-block;
  padding: 7px 12px;
  border: 1px solid var(--ink-600);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist-400);
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--ink-950);
  background: var(--accent);
  border-color: var(--accent);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa-section {
  padding: 18px 0 0;
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.page-faq .qa {
  position: relative;
  border: 1px solid var(--ink-600);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--faq-panel), rgba(6, 19, 33, 0.94));
  box-shadow: var(--shadow-panel);
  overflow: hidden;
}

.page-faq .qa::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--grad-key);
  opacity: 0.5;
}

.page-faq .qa__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 18px 16px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .qa__num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: var(--mist-400);
  transform: translateY(-2px);
  transition: color 0.18s var(--ease);
}

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

.page-faq .qa__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--paper-50);
}

.page-faq .qa__mark {
  position: relative;
  width: 14px;
  height: 2px;
  margin-top: 12px;
  background: var(--accent);
  border-radius: 2px;
}

.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  left: 6px;
  top: -6px;
  width: 2px;
  height: 14px;
  background: var(--accent);
  border-radius: 2px;
  opacity: 1;
  transition: opacity 0.18s var(--ease);
}

.page-faq .qa[open] .qa__mark::after {
  opacity: 0;
}

.page-faq .qa__body {
  padding: 0 16px 22px;
}

.page-faq .qa__body > p {
  max-width: 72ch;
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.75;
}

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

.page-faq .qa__body a {
  color: var(--cyan-200);
  text-decoration: none;
  border-bottom: 1px solid rgba(155, 243, 232, 0.35);
}

.page-faq .qa__body a:hover,
.page-faq .qa__body a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- 检查点分类 ---------- */
.page-faq .check-layout {
  display: grid;
  gap: 16px;
  margin: 18px 0 20px;
}

.page-faq .check-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-faq .check-cell {
  padding: 14px 12px 12px;
  border: 1px solid var(--ink-600);
  border-radius: 8px;
  background: rgba(27, 58, 94, 0.3);
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .check-cell:hover {
  transform: translateY(-4px);
  border-color: rgba(44, 230, 210, 0.55);
  background: rgba(27, 58, 94, 0.55);
}

.page-faq .check-cell__count {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--hot);
}

.page-faq .check-cell__name {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--paper-50);
}

.page-faq .check-cell__note {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--mist-400);
  opacity: 0.72;
  transition: opacity 0.18s var(--ease);
}

.page-faq .check-cell:hover .check-cell__note,
.page-faq .check-cell:focus-within .check-cell__note {
  opacity: 1;
}

.page-faq .qa-figure {
  margin: 0;
  border: 1px solid var(--ink-600);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(135deg, rgba(44, 230, 210, 0.12), rgba(255, 122, 46, 0.1));
}

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

/* ---------- 步骤列表 ---------- */
.page-faq .qa-steps {
  list-style: none;
  margin: 14px 0 18px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .qa-step {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--faq-line-soft);
  font-size: 15px;
  line-height: 1.75;
}

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

.page-faq .qa-step__num {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid rgba(44, 230, 210, 0.4);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}

.page-faq .qa-step strong {
  color: var(--paper-50);
  font-weight: 700;
}

/* ---------- 提示条与清单 ---------- */
.page-faq .qa-tip {
  margin: 16px 0 0;
  padding: 12px 14px;
  border-left: 2px solid var(--orange-500);
  border-radius: 0 8px 8px 0;
  background: rgba(255, 122, 46, 0.08);
  font-size: 14px;
  line-height: 1.75;
  color: var(--body-copy);
}

.page-faq .qa-list {
  list-style: none;
  margin: 14px 0 18px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .qa-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .qa-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 8px;
  height: 2px;
  background: var(--accent);
}

/* ---------- 数据焦点与图例 ---------- */
.page-faq .stat {
  margin: 16px 0 18px;
  padding: 14px 16px;
  border: 1px solid var(--ink-600);
  border-left: 3px solid var(--orange-500);
  border-radius: 0 8px 8px 0;
  background: rgba(6, 19, 33, 0.7);
}

.page-faq .stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--hot);
}

.page-faq .legend {
  list-style: none;
  margin: 12px 0 18px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  font-size: 13px;
  color: var(--body-copy);
}

.page-faq .legend__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-faq .legend__dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  display: inline-block;
}

.page-faq .legend__dot--live {
  background: var(--cyan-400);
}

.page-faq .legend__dot--hot {
  background: var(--orange-500);
}

.page-faq .legend__dot--done {
  background: var(--paper-50);
}

/* ---------- 通栏场景图 ---------- */
.page-faq .strip-figure {
  position: relative;
  margin: 18px 0;
  border: 1px solid var(--ink-600);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-950);
}

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

.page-faq .strip-figure figcaption {
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist-400);
  background: rgba(6, 19, 33, 0.9);
  border-top: 1px solid var(--ink-600);
}

/* ---------- CTA ---------- */
.page-faq .qa-cta {
  margin-top: 20px;
}

.page-faq .qa-cta .btn {
  display: inline-block;
  text-decoration: none;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 760px) {
  .page-faq {
    padding-bottom: 80px;
  }

  .page-faq .faq-hero {
    padding: 40px 0 48px;
  }

  .page-faq .qa-section {
    padding-top: 24px;
  }

  .page-faq .qa__summary {
    grid-template-columns: 62px minmax(0, 1fr) 22px;
    align-items: center;
    gap: 16px;
    padding: 22px 26px;
  }

  .page-faq .qa__num {
    font-size: 38px;
    transform: translateY(-1px);
  }

  .page-faq .qa__title {
    font-size: 21px;
  }

  .page-faq .qa__mark {
    margin-top: 0;
  }

  .page-faq .qa__body {
    padding: 0 26px 26px 104px;
  }

  .page-faq .qa__body > p {
    font-size: 16px;
  }

  .page-faq .check-layout {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
    gap: 22px;
  }

  .page-faq .qa-step {
    font-size: 16px;
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 14px;
  }

  .page-faq .qa-tip,
  .page-faq .qa-list li,
  .page-faq .legend {
    font-size: 15px;
  }
}

@media (min-width: 1100px) {
  .page-faq .qa__body {
    padding-right: 60px;
  }

  .page-faq .check-grid {
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .check-cell,
  .page-faq .faq-jump a,
  .page-faq .qa__mark::after,
  .page-faq .check-cell__note {
    transition: none;
  }

  .page-faq .check-cell:hover {
    transform: none;
  }
}