.page-faq {
  --faq-panel: var(--deep-green);
  --faq-num: var(--font-num);
  --faq-side: 236px;
  padding-bottom: 72px;
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 44px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -110px;
  right: -80px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(47, 227, 200, 0.16), rgba(47, 227, 200, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  background: linear-gradient(90deg, var(--neon-cyan) 0%, rgba(47, 227, 200, 0) 42%, var(--signal-orange) 100%);
  opacity: 0.55;
}

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

.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-faq .crumbs__link {
  color: var(--sage);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .crumbs__link:hover,
.page-faq .crumbs__link:focus-visible {
  color: var(--neon-cyan);
  border-bottom-color: var(--neon-cyan);
  outline: none;
}

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

.page-faq .crumbs__current::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-faq .faq-hero__kicker {
  margin: 26px 0 14px;
  font-family: var(--faq-num);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--neon-cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  max-width: 17ch;
  font-size: clamp(30px, 6.4vw, 54px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 44ch;
  font-size: 17px;
  line-height: 1.78;
  color: var(--sage);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  margin: 30px 0 0;
  padding: 1px;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-stat {
  flex: 1 1 150px;
  padding: 14px 16px 16px;
  background: var(--faq-panel);
}

.page-faq .faq-stat__num {
  display: block;
  font-family: var(--faq-num);
  font-variant-numeric: tabular-nums;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--neon-cyan);
}

.page-faq .faq-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--sage);
}

/* ---------- 主体网格 ---------- */
.page-faq .faq-body {
  padding-top: 40px;
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

/* ---------- 分类轨道 ---------- */
.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--sage);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-rail__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  background: var(--faq-panel);
  color: var(--paper);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.18s ease, color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  background: rgba(47, 227, 200, 0.07);
  outline: none;
}

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

.page-faq .faq-rail__num {
  font-family: var(--faq-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--neon-cyan);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 88px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 16px;
  row-gap: 12px;
  align-items: center;
  margin-bottom: 22px;
}

.page-faq .faq-group__num {
  grid-row: 1;
  font-family: var(--faq-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(32px, 7vw, 44px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--neon-cyan);
}

.page-faq .faq-group__title {
  grid-column: 2;
  margin: 0;
  font-size: clamp(21px, 4.2vw, 30px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-faq .faq-group__lede {
  grid-column: 1 / -1;
  margin: 0;
  max-width: 50ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--sage);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  position: relative;
  margin: 0 0 22px;
  overflow: hidden;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.04);
}

.page-faq .faq-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(158deg, rgba(11, 31, 26, 0.62), rgba(11, 31, 26, 0.06) 62%);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-list > li {
  margin: 0;
}

.page-faq .faq-item {
  position: relative;
  border: 1px solid var(--line);
  background: var(--faq-panel);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-item::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(47, 227, 200, 0.1), rgba(47, 227, 200, 0) 58%);
  opacity: 0;
  transition: opacity 0.2s ease;
}

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

.page-faq .faq-item:hover::after {
  opacity: 1;
}

.page-faq .faq-item[open] {
  border-color: var(--neon-cyan);
  background: #0e2a22;
}

.page-faq .faq-item[open]::after {
  opacity: 0.5;
}

.page-faq .faq-q {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 16px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-item[open] .faq-q {
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-q__num {
  font-family: var(--faq-num);
  font-variant-numeric: tabular-nums;
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--sage);
  transition: color 0.2s ease;
}

.page-faq .faq-item[open] .faq-q__num,
.page-faq .faq-item:hover .faq-q__num {
  color: var(--neon-cyan);
}

.page-faq .faq-q__text {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .faq-q__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line);
  color: var(--neon-cyan);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.page-faq .faq-q__icon svg {
  display: block;
}

.page-faq .faq-item[open] .faq-q__icon {
  transform: rotate(180deg);
  border-color: var(--neon-cyan);
}

.page-faq .faq-a {
  position: relative;
  z-index: 1;
  padding: 4px 16px 20px;
}

.page-faq .faq-a p {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.8;
  color: #cfe0da;
}

.page-faq .faq-a__data {
  display: inline-block;
  margin-top: 16px !important;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--signal-orange);
  background: rgba(255, 106, 43, 0.08);
  font-family: var(--faq-num);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--signal-orange);
}

/* ---------- 尾部引导 ---------- */
.page-faq .faq-next {
  margin-top: 64px;
}

.page-faq .faq-next__panel {
  position: relative;
  padding: 30px 22px 28px;
  background: var(--faq-panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-faq .faq-next__panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 64px;
  background: var(--neon-cyan);
}

.page-faq .faq-next__tag {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  font-family: var(--faq-num);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--neon-cyan);
}

.page-faq .faq-next__title {
  margin: 0 0 12px;
  max-width: 22ch;
  font-size: clamp(21px, 4vw, 28px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.page-faq .faq-next__lede {
  margin: 0 0 22px;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--sage);
}

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

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-next__link {
  font-size: 14px;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-next__link:hover,
.page-faq .faq-next__link:focus-visible {
  color: var(--neon-cyan);
  border-bottom-color: var(--neon-cyan);
  outline: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 34px 0 52px;
  }

  .page-faq .faq-q {
    padding: 18px 20px;
  }

  .page-faq .faq-q__num {
    font-size: 26px;
  }

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

  .page-faq .faq-a {
    padding: 6px 20px 24px;
  }

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

  .page-faq .faq-next__panel {
    padding: 38px 34px 34px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-body {
    padding-top: 52px;
  }

  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-side) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 28px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-rail__link {
    display: flex;
    width: 100%;
    margin-left: -1px;
    padding: 11px 14px;
    border: 0;
    border-left: 2px solid transparent;
    background: transparent;
    justify-content: flex-start;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    border-left-color: var(--neon-cyan);
    background: rgba(47, 227, 200, 0.07);
  }

  .page-faq .faq-hero__title {
    max-width: 20ch;
  }

  .page-faq .faq-group + .faq-group {
    margin-top: 68px;
    padding-top: 48px;
  }

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

  .page-faq .faq-next {
    margin-top: 84px;
  }

  .page-faq .faq-next__panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    column-gap: 48px;
    align-items: start;
    padding: 44px 44px 38px;
  }

  .page-faq .faq-next__tag {
    grid-column: 1;
  }

  .page-faq .faq-next__title {
    grid-column: 1;
    max-width: 20ch;
  }

  .page-faq .faq-next__lede {
    grid-column: 1;
    margin-bottom: 0;
  }

  .page-faq .faq-next__actions {
    grid-column: 2;
    grid-row: 1 / span 3;
    flex-direction: column;
    align-items: stretch;
    margin-bottom: 0;
    padding-top: 34px;
  }

  .page-faq .faq-next__links {
    grid-column: 1 / -1;
    margin-top: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item::after,
  .page-faq .faq-q__icon,
  .page-faq .faq-q__num,
  .page-faq .faq-rail__link,
  .page-faq .faq-next__link,
  .page-faq .crumbs__link {
    transition: none;
  }
}