.page-faq {
  --faq-deep: #071B1A;
  --faq-panel: #0B2422;
  --faq-line: #1B3D3A;
  background:
    radial-gradient(circle at 88% 2%, rgba(43, 210, 255, 0.10), transparent 46%),
    linear-gradient(180deg, var(--teal) 0%, #0A2523 58%, var(--ink) 100%);
  color: var(--text);
  padding-bottom: 56px;
  overflow-x: hidden;
}

.page-faq .faq-band {
  height: 8px;
  background: linear-gradient(90deg, var(--red) 0%, var(--red-deep) 52%, var(--teal) 100%);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 20px var(--pad) 8px;
}

.page-faq .faq-crumbs {
  margin-bottom: 24px;
}

.page-faq .faq-eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.22em;
  color: var(--lime);
}

.page-faq .faq-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 7vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--paper);
  transform: skewX(-4deg);
  transform-origin: left center;
}

.page-faq .faq-lead {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 28px 0 0;
  padding: 14px 0;
  list-style: none;
  border-top: 2px solid var(--faq-line);
  border-bottom: 2px solid var(--faq-line);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-size: var(--fs-24);
  letter-spacing: 0.04em;
  color: var(--lime);
  line-height: 1.1;
}

.page-faq .faq-stat__label {
  font-size: var(--fs-12);
  color: var(--muted);
  line-height: 1.5;
}

.page-faq .faq-hero__figure {
  margin: 28px 0 0;
  border: 2px solid var(--faq-line);
  box-shadow: 8px 8px 0 0 rgba(0, 0, 0, 0.45);
  background: var(--faq-deep);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.8);
}

.page-faq .faq-hero__figure figcaption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--muted);
  border-top: 2px solid var(--faq-line);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding: 36px var(--pad) 0;
}

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

/* ---------- 分类索引 ---------- */
.page-faq .faq-rail {
  min-width: 0;
}

.page-faq .faq-rail__title {
  margin: 0;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--faq-line);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 10px 0 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 12px;
  white-space: nowrap;
  text-decoration: none;
  font-size: var(--fs-14);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
  border-left: 4px solid transparent;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-rail__link:hover {
  background: rgba(198, 255, 61, 0.08);
  color: var(--paper);
}

.page-faq .faq-rail__link[data-active="true"] {
  border-left-color: var(--lime);
  background: rgba(198, 255, 61, 0.10);
  color: var(--paper);
}

.page-faq .faq-rail__code {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--cyan);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-group {
  padding: 0 0 34px;
  scroll-margin-top: calc(var(--cmd-h) + 24px);
}

.page-faq .faq-group + .faq-group {
  margin-top: 6px;
  padding-top: 30px;
  border-top: 2px solid var(--faq-line);
}

.page-faq .faq-group__head {
  display: grid;
  gap: 8px;
  margin-bottom: 20px;
}

.page-faq .faq-group__index {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.2em;
  color: var(--lime);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-24);
  line-height: 1.15;
  color: var(--paper);
}

.page-faq .faq-group__note {
  margin: 0;
  max-width: 60ch;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--muted);
}

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

.page-faq .faq-group__note a:hover,
.page-faq .faq-item__body a:hover {
  color: var(--lime);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  margin-bottom: 14px;
  background: var(--faq-panel);
  border: 2px solid var(--faq-line);
  box-shadow: 6px 6px 0 0 rgba(0, 0, 0, 0.40);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-item:hover {
  box-shadow: 10px 10px 0 0 rgba(0, 0, 0, 0.46);
}

.page-faq .faq-item[open] {
  border-color: var(--red);
  box-shadow: 6px 6px 0 0 var(--red-deep);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q {
  flex: 1;
  margin: 0;
  font-size: var(--fs-17);
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
}

.page-faq .faq-item__mark {
  flex: none;
  width: 10px;
  height: 10px;
  margin-top: 7px;
  border-top: 2px solid var(--cyan);
  border-right: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(135deg);
  border-color: var(--lime);
}

.page-faq .faq-item__body {
  padding: 4px 18px 20px;
  background: var(--faq-deep);
  box-shadow: inset 0 14px 20px -16px rgba(0, 0, 0, 0.95);
  animation: faq-unfold 0.22s ease-out;
}

@keyframes faq-unfold {
  from {
    opacity: 0;
    transform: translateX(-6px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.page-faq .faq-answer {
  margin: 0 0 14px;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-steps {
  counter-reset: faq-step;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps > li {
  counter-increment: faq-step;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 6px;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--text);
  padding-left: 0;
}

.page-faq .faq-steps > li::before {
  content: counter(faq-step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--lime);
  line-height: 1.9;
}

/* ---------- 图文分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.page-faq .faq-figure {
  margin: 0;
  border: 2px solid var(--faq-line);
  box-shadow: 8px 8px 0 0 rgba(0, 0, 0, 0.45);
  background: var(--faq-deep);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 2px solid var(--faq-line);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 人工通道 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 22px;
  padding: 20px;
  background: var(--panel);
  border: 2px solid var(--red);
  box-shadow: 6px 6px 0 0 var(--red-deep);
}

.page-faq .faq-contact__title {
  margin: 0 0 8px;
  font-size: var(--fs-17);
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-contact__note {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 18px 0 0;
  list-style: none;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--text);
  border-top: 2px solid var(--line);
}

.page-faq .faq-contact__list a {
  color: var(--cyan);
  text-decoration: none;
  word-break: break-all;
}

.page-faq .faq-contact__list a:hover {
  color: var(--lime);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-contact__list {
    padding-top: 0;
    padding-left: 18px;
    border-top: 0;
    border-left: 2px solid var(--line);
  }
}

@media (min-width: 900px) {
  .page-faq {
    padding-bottom: 72px;
  }

  .page-faq .faq-title {
    transform: skewX(-4deg);
  }

  .page-faq .faq-shell {
    grid-template-columns: 224px minmax(0, 1fr);
    gap: 56px;
    padding-top: 48px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--cmd-h) + 24px);
  }

  .page-faq .faq-rail__list {
    display: block;
    overflow: visible;
    margin-top: 14px;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__list > li + li {
    margin-top: 6px;
  }

  .page-faq .faq-rail__link {
    width: 100%;
  }

  .page-faq .faq-group__title {
    font-size: var(--fs-40);
    line-height: 1.05;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 32px;
  }

  .page-faq .faq-figure {
    position: sticky;
    top: calc(var(--cmd-h) + 24px);
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-shell {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 64px;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 380px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__body {
    animation: none;
  }

  .page-faq .faq-item,
  .page-faq .faq-item__mark,
  .page-faq .faq-rail__link {
    transition: none;
  }
}