.page-faq {
  --faq-rail-w: 232px;
  --faq-hair: rgba(11, 46, 63, .14);
  --faq-ink: #0A1A22;
  --faq-soft: rgba(244, 241, 234, .72);
  --faq-line-dark: rgba(244, 241, 234, .16);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 40px 0 56px;
  color: var(--paper);
  background:
    radial-gradient(120% 90% at 88% -12%, rgba(30, 107, 135, .9) 0%, rgba(11, 46, 63, 0) 58%),
    linear-gradient(162deg, var(--tide-800) 0%, var(--tide-900) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(244, 241, 234, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244, 241, 234, .055) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--sand), rgba(200, 165, 91, 0) 65%);
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: 40px;
}

.page-faq .faq-hero .breadcrumb__list {
  padding: 0;
  margin: 0 0 24px;
}

.page-faq .faq-hero .breadcrumb__link,
.page-faq .faq-hero .breadcrumb__item,
.page-faq .faq-hero .breadcrumb__sep {
  color: var(--faq-soft);
  font-size: 13px;
}

.page-faq .faq-hero .breadcrumb__link:hover {
  color: var(--coral);
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(38px, 9vw, 72px);
  font-weight: 300;
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--faq-soft);
}

.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 40px;
  margin: 32px 0 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid rgba(200, 165, 91, .38);
}

.page-faq .faq-stats__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-stats__num {
  font-size: 26px;
  font-weight: 500;
  color: var(--coral);
  letter-spacing: .02em;
}

.page-faq .faq-stats__label {
  font-size: 12px;
  color: var(--faq-soft);
}

/* 首屏右侧路径面板 */
.page-faq .faq-hero__panel {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-faq .faq-path {
  padding: 24px 22px 26px;
  border: 1px solid var(--faq-line-dark);
  border-radius: var(--r-l);
  background: rgba(244, 241, 234, .06);
  backdrop-filter: blur(2px);
}

.page-faq .faq-path__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 18px;
}

.page-faq .faq-path__title {
  margin: 0;
  font-size: 19px;
  font-weight: 600;
  color: var(--paper);
}

.page-faq .faq-path__meta {
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--sand);
}

.page-faq .faq-path__steps {
  display: grid;
  gap: 14px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-path__step {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: start;
}

.page-faq .faq-path__idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid rgba(255, 107, 74, .55);
  border-radius: var(--r-pill);
  font-size: 12px;
  color: var(--coral);
}

.page-faq .faq-path__text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--faq-soft);
}

.page-faq .faq-path__text b {
  color: var(--paper);
  font-weight: 500;
}

.page-faq .faq-modules {
  padding: 20px 22px 22px;
  border: 1px solid var(--faq-line-dark);
  border-radius: var(--r-l);
  background: rgba(10, 26, 34, .32);
}

.page-faq .faq-modules__label {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--sand);
}

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

.page-faq .faq-mod {
  padding: 5px 11px;
  border: 1px solid rgba(244, 241, 234, .18);
  border-radius: var(--r-pill);
  font-size: 12.5px;
  color: var(--faq-soft);
}

/* ---------- 图片区 ---------- */
.page-faq .faq-figure {
  margin-top: 40px;
}

.page-faq .faq-figure .media-frame {
  border-radius: var(--r-l);
  overflow: hidden;
}

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

.page-faq .faq-figure .media-frame__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
}

.page-faq .faq-figure--inline {
  margin: 48px 0 8px;
  padding: 0;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 40px;
  padding-top: 48px;
  padding-bottom: 88px;
}

/* ---------- 主题跳转 ---------- */
.page-faq .faq-rail {
  order: -1;
}

.page-faq .faq-rail__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .1em;
  font-weight: 600;
  color: var(--gray);
  text-transform: uppercase;
}

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

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

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--faq-hair);
  border-radius: var(--r-pill);
  font-size: 14px;
  color: var(--tide-800);
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-rail__link .mono {
  font-size: 11px;
  color: var(--sand);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--coral-deep);
  border-color: var(--sand);
}

.page-faq .faq-rail__note {
  margin-top: 18px;
  padding-left: 14px;
  border-left: 2px solid var(--sand);
  font-size: 13px;
  line-height: 1.75;
  color: var(--gray);
}

.page-faq .faq-rail__note p {
  margin: 0 0 10px;
}

.page-faq .faq-rail__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--bar-h) + 12px);
  margin-bottom: 56px;
}

.page-faq .faq-group:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-group__bar {
  position: sticky;
  top: var(--bar-h);
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 4px;
  padding: 12px 18px;
  border-radius: var(--r-s);
  background: var(--tide-600);
  color: var(--paper);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .01em;
}

.page-faq .faq-group__idx {
  font-size: 12px;
  color: var(--sand);
  letter-spacing: .08em;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-item summary {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 20px 2px;
  cursor: pointer;
  list-style: none;
  transition: color .2s var(--ease);
}

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

.page-faq .faq-item summary:hover .faq-item__q {
  color: var(--coral-deep);
}

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  padding-left: 12px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--coral);
}

.page-faq .faq-item[open] summary::after {
  content: "–";
}

.page-faq .faq-item__idx {
  flex: 0 0 auto;
  font-size: 12px;
  color: var(--gray);
  padding-top: 5px;
}

.page-faq .faq-item__q {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--tide-800);
  transition: color .2s var(--ease);
}

.page-faq .faq-a {
  position: relative;
  padding: 0 2px 24px;
  animation: faq-drop .32s var(--ease);
}

.page-faq .faq-a::before {
  content: "";
  position: absolute;
  top: 0;
  left: 2px;
  width: 56px;
  height: 1px;
  background: var(--sand);
}

@keyframes faq-drop {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-steps {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 10px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--faq-ink);
}

.page-faq .faq-steps li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--coral-deep);
  padding-top: 6px;
  letter-spacing: .04em;
}

.page-faq .faq-why {
  margin: 16px 0 0 42px;
  padding-left: 12px;
  border-left: 1px solid rgba(200, 165, 91, .6);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray);
}

.page-faq .faq-more {
  margin: 14px 0 0 42px;
}

.page-faq .faq-link {
  font-size: 14px;
  color: var(--coral-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(217, 72, 42, .35);
  transition: border-color .2s var(--ease);
}

.page-faq .faq-link:hover {
  border-color: var(--coral-deep);
}

.page-faq .faq-why b,
.page-faq .faq-steps b {
  font-family: var(--font-mono);
  font-weight: 500;
}

/* ---------- 沙金分隔与批次注释 ---------- */
.page-faq .faq-group__rule {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 26px 0 0;
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--gray);
}

.page-faq .faq-group__rule::before {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, var(--sand), rgba(200, 165, 91, 0));
}

/* ---------- 响应式 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 56px 0 72px;
  }

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

  .page-faq .faq-group__bar {
    padding: 14px 22px;
    font-size: 18px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding: 72px 0 88px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    gap: 64px;
    align-items: start;
  }

  .page-faq .faq-group__bar {
    top: 0;
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) var(--faq-rail-w);
    gap: 64px;
    padding-top: 72px;
    padding-bottom: 112px;
  }

  .page-faq .faq-rail {
    order: 0;
    position: sticky;
    top: 32px;
    align-self: start;
    padding: 4px 0 0 20px;
    border-left: 1px solid var(--faq-hair);
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-rail__link {
    justify-content: flex-start;
    padding: 11px 6px;
    border: 0;
    border-bottom: 1px solid transparent;
    border-radius: var(--r-s);
    white-space: normal;
    transition: background .2s var(--ease), color .2s var(--ease);
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    background: var(--paper-dim);
    border-color: transparent;
  }

  .page-faq .faq-steps li {
    grid-template-columns: 40px 1fr;
  }

  .page-faq .faq-item__q {
    font-size: 19px;
  }

  .page-faq .faq-why,
  .page-faq .faq-more {
    margin-left: 54px;
  }
}

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

  .page-faq .faq-rail__link,
  .page-faq .faq-item summary,
  .page-faq .faq-item__q,
  .page-faq .faq-link {
    transition: none;
  }
}