.page-faq {
  --faq-rail-w: 236px;
  --faq-glow: radial-gradient(120% 90% at 76% -12%, rgba(47, 122, 82, 0.3), rgba(10, 19, 16, 0) 64%);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 34px 0 56px;
  background-image: var(--faq-glow);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37, 56, 47, 0.42) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 56, 47, 0.42) 1px, transparent 1px);
  background-size: 104px 104px;
  -webkit-mask-image: radial-gradient(130% 86% at 72% 0%, #000 0%, transparent 74%);
  mask-image: radial-gradient(130% 86% at 72% 0%, #000 0%, transparent 74%);
  pointer-events: none;
}

.page-faq .faq-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .crumbs {
  margin-bottom: 30px;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 36px;
}

.page-faq .faq-hero-lead .plate {
  margin-bottom: 18px;
}

.page-faq .faq-hero-lead h1 {
  margin: 0 0 20px;
  font-size: clamp(31px, 5.2vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  font-weight: 700;
  color: var(--c-ice);
  max-width: 20ch;
}

.page-faq .faq-hero-sub {
  margin: 0 0 28px;
  max-width: 62ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--c-mist);
}

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

.page-faq .faq-hero-side {
  padding: 22px 22px 14px;
  background: linear-gradient(180deg, rgba(18, 33, 27, 0.94), rgba(10, 19, 16, 0.72));
  border: 1px solid rgba(200, 164, 77, 0.34);
  border-radius: var(--r-lg);
}

.page-faq .faq-side-title {
  margin: 0 0 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--c-line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-mist);
}

.page-faq .faq-side-num {
  color: var(--c-gold);
  font-weight: 600;
}

.page-faq .faq-side-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-side-list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--c-line-faint);
  color: var(--c-ice);
  font-size: 15px;
  text-decoration: none;
  transition: color var(--t-fast) var(--ease), padding-left var(--t-fast) var(--ease);
}

.page-faq .faq-side-list li:last-child a {
  border-bottom: 0;
}

.page-faq .faq-side-list a:hover,
.page-faq .faq-side-list a:focus-visible {
  color: var(--c-turf-lit);
  padding-left: 6px;
}

.page-faq .faq-side-id {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--c-mist);
}

/* ---------- 速查带 ---------- */
.page-faq .faq-band {
  position: relative;
  padding: 40px 0 44px;
  background: linear-gradient(180deg, rgba(30, 70, 52, 0.58), rgba(18, 33, 27, 0.92));
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
  overflow: hidden;
}

.page-faq .faq-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(37, 56, 47, 0.55) 0 1px, transparent 1px 52px);
  pointer-events: none;
  opacity: 0.7;
}

.page-faq .faq-band .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-band-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 22px;
  margin-bottom: 26px;
}

.page-faq .faq-band-title {
  margin: 0;
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 600;
  color: var(--c-ice);
  letter-spacing: 0.01em;
}

.page-faq .faq-band-sub {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}

.page-faq .faq-band-list {
  display: grid;
  gap: 20px 24px;
  grid-template-columns: repeat(auto-fit, minmax(168px, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-band-cell {
  padding-left: 16px;
  border-left: 2px solid rgba(200, 164, 77, 0.52);
}

.page-faq .faq-band-fig {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 0 0 8px;
}

.page-faq .faq-band-fig .num {
  font-family: var(--font-display);
  font-size: 40px;
  line-height: 1;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--c-ice);
  text-shadow: 0 0 18px rgba(233, 242, 236, 0.24);
}

.page-faq .faq-band-unit {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-gold);
}

.page-faq .faq-band-note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 主体两列 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 30px;
  padding-top: 48px;
}

.page-faq .faq-rail-inner {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-faq .faq-rail-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 15px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-pill);
  background: rgba(18, 33, 27, 0.7);
  color: var(--c-mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-faq .faq-rail-link:hover,
.page-faq .faq-rail-link:focus-visible {
  color: var(--c-ice);
  border-color: rgba(200, 164, 77, 0.6);
  background: rgba(30, 70, 52, 0.6);
}

.page-faq .faq-rail-id {
  color: var(--c-gold);
}

.page-faq .faq-stream {
  min-width: 0;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-top: 26px;
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-group + .faq-group {
  margin-top: 34px;
}

.page-faq .faq-group-head {
  margin-bottom: 16px;
}

.page-faq .faq-group-id {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-faq .faq-group-title {
  margin: 0 0 10px;
  font-size: clamp(21px, 2.6vw, 28px);
  line-height: 1.3;
  font-weight: 650;
  color: var(--c-ice);
  letter-spacing: -0.005em;
}

.page-faq .faq-group-desc {
  margin: 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-mist);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--c-line-soft);
  border-radius: var(--r-sm);
  transition: background var(--t-mid) var(--ease);
}

.page-faq .faq-item[open] {
  background: linear-gradient(180deg, rgba(18, 33, 27, 0.92), rgba(18, 33, 27, 0.28));
  border-bottom-color: rgba(200, 164, 77, 0.34);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 17px 12px;
  cursor: pointer;
  list-style: none;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-ice);
  transition: color var(--t-fast) var(--ease);
}

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

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  color: var(--c-turf-lit);
}

.page-faq .faq-mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 6px;
}

.page-faq .faq-mark::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  transform: translateY(-50%);
  background: var(--c-gold);
}

.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  background: var(--c-gold);
  transition: transform var(--t-mid) var(--ease), opacity var(--t-mid) var(--ease);
}

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

.page-faq .faq-q {
  min-width: 0;
}

.page-faq .faq-a {
  padding: 0 12px 20px 41px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--c-mist);
}

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

.page-faq .faq-more {
  margin: 22px 0 0;
}

/* ---------- 图文 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 10px;
}

.page-faq .faq-figure .figure-media {
  overflow: hidden;
  border-radius: var(--r-md);
  border: 1px solid var(--c-line);
  background: var(--c-panel);
}

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

.page-faq .faq-figure .figure-cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--c-mist-faint);
}

.page-faq .faq-split {
  display: grid;
  gap: 26px;
}

.page-faq .faq-split-main {
  min-width: 0;
}

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

/* ---------- 尾部入口 ---------- */
.page-faq .faq-tail {
  padding: 56px 0 74px;
  border-top: 1px solid var(--c-line);
  margin-top: 56px;
}

.page-faq .faq-tail-title {
  margin: 0 0 26px;
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 600;
  color: var(--c-ice);
}

.page-faq .faq-tail-grid {
  display: grid;
  gap: 18px;
}

.page-faq .faq-tail-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 22px;
  text-decoration: none;
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(18, 33, 27, 0.94), rgba(10, 19, 16, 0.9));
  transition: border-color var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
}

.page-faq .faq-tail-card:hover,
.page-faq .faq-tail-card:focus-visible {
  border-color: rgba(200, 164, 77, 0.56);
  transform: translateY(-3px);
}

.page-faq .faq-tail-id {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-faq .faq-tail-card h3 {
  margin: 0;
  font-size: 18px;
  line-height: 1.45;
  font-weight: 650;
  color: var(--c-ice);
}

.page-faq .faq-tail-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-faq .faq-tail-go {
  margin-top: auto;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-turf-lit);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero {
    padding: 44px 0 68px;
  }

  .page-faq .faq-band {
    padding: 48px 0 52px;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    align-items: start;
  }

  .page-faq .faq-tail-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-a {
    padding-right: 28px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(288px, 0.78fr);
    column-gap: 56px;
    align-items: start;
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    column-gap: 60px;
    padding-top: 60px;
  }

  .page-faq .faq-rail-inner {
    display: block;
    position: sticky;
    top: calc(var(--hdr-h) + 26px);
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail-link {
    display: flex;
    width: 100%;
    justify-content: flex-start;
    padding: 13px 0;
    border: 0;
    border-bottom: 1px solid var(--c-line-faint);
    border-radius: 0;
    background: none;
    font-size: 12.5px;
  }

  .page-faq .faq-rail-link:first-child {
    border-top: 1px solid var(--c-line-faint);
  }

  .page-faq .faq-rail-link:hover,
  .page-faq .faq-rail-link:focus-visible {
    padding-left: 8px;
    background: none;
    border-color: rgba(200, 164, 77, 0.5);
  }

  .page-faq .faq-group {
    padding-top: 30px;
  }

  .page-faq .faq-item > summary {
    font-size: 17px;
    padding: 19px 16px;
  }

  .page-faq .faq-a {
    padding: 0 60px 22px 45px;
  }

  .page-faq .faq-band-list {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-mark::after,
  .page-faq .faq-item,
  .page-faq .faq-rail-link,
  .page-faq .faq-tail-card,
  .page-faq .faq-side-list a {
    transition: none;
  }

  .page-faq .faq-tail-card:hover,
  .page-faq .faq-tail-card:focus-visible {
    transform: none;
  }
}