.page-faq {
  --faq-panel: rgba(28, 61, 51, .5);
  --faq-edge: rgba(76, 122, 99, .45);
  --faq-glow: rgba(255, 122, 61, .1);
  display: block;
  overflow-x: clip;
  padding-bottom: 72px;
}

.page-faq .crumb {
  padding-top: 22px;
}

/* ---------- 封面带 ---------- */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  gap: 26px;
  padding: 28px 0 52px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -40px -140px auto -140px;
  height: 150%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(56% 60% at 16% 34%, rgba(217, 169, 76, .13), transparent 70%),
    radial-gradient(44% 52% at 90% 6%, rgba(255, 122, 61, .07), transparent 74%);
}

.page-faq .faq-hero__copy,
.page-faq .faq-hero__figure {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 9vw, 58px);
  font-weight: 900;
  line-height: 1.03;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 600px;
}

.page-faq .faq-hero__meta {
  display: inline-block;
  margin: 24px 0 0;
  padding: 8px 14px;
  border: var(--line-soft);
  border-radius: var(--r);
  background: rgba(15, 42, 36, .45);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--sand-lt);
}

.page-faq .faq-hero__figure .media {
  aspect-ratio: 4 / 3;
}

/* ---------- 两步路径 ---------- */
.page-faq .faq-route {
  padding-top: 44px;
  padding-bottom: 8px;
  border-top: var(--line-soft);
}

.page-faq .faq-route h2 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-size: clamp(24px, 4.6vw, 36px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-route__media {
  margin-top: 26px;
}

.page-faq .faq-route__media .media {
  aspect-ratio: 21 / 9;
  border: var(--line-soft);
  border-radius: var(--r);
}

.page-faq .faq-steps {
  display: grid;
  gap: 14px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps > li {
  position: relative;
  padding: 20px 22px 22px;
  border: var(--line-soft);
  border-radius: var(--r);
  background: var(--faq-panel);
}

.page-faq .faq-steps__num {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 2px;
  background: var(--sand-lt);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
}

.page-faq .faq-steps h3 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-steps p {
  margin: 10px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(245, 241, 230, .78);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-shell {
  padding-top: 54px;
}

.page-faq .faq-shell__head h2 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-size: clamp(24px, 4.8vw, 38px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-body {
  display: grid;
  gap: 30px;
  margin-top: 30px;
}

/* 左侧命令栏式索引 */
.page-faq .faq-index {
  border: var(--line-soft);
  border-radius: var(--r);
  background: var(--faq-panel);
  padding: 14px 14px 10px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--stone);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-index__btn {
  display: flex;
  flex: 0 0 auto;
  align-items: baseline;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid rgba(76, 122, 99, .38);
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(245, 241, 230, .05), rgba(15, 42, 36, .3));
  box-shadow: inset 0 1px 0 rgba(245, 241, 230, .07), 0 1px 0 rgba(15, 42, 36, .55);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.3;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color .18s ease, color .18s ease, transform .12s ease, box-shadow .12s ease;
}

.page-faq .faq-index__btn:hover,
.page-faq .faq-index__btn:focus-visible {
  border-color: var(--sand);
  color: var(--sand);
  transform: translateY(2px);
  box-shadow: inset 0 2px 3px rgba(15, 42, 36, .75);
}

.page-faq .faq-index__num {
  flex: 0 0 auto;
  color: var(--sand);
  letter-spacing: .06em;
}

.page-faq .faq-index__btn:hover .faq-index__num,
.page-faq .faq-index__btn:focus-visible .faq-index__num {
  color: var(--neon);
}

/* 右侧答案面板 */
.page-faq .faq-panel {
  display: grid;
  gap: 42px;
  min-width: 0;
}

.page-faq .faq-group {
  padding-top: 18px;
  border-top: 2px solid var(--moss);
}

.page-faq .faq-group__label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 4px;
  font-family: var(--font-head);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--sand);
}

.page-faq .faq-group__label::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--neon);
}

.page-faq .faq-item {
  position: relative;
  padding: 22px 0 22px 20px;
  border-bottom: 1px solid rgba(76, 122, 99, .28);
  scroll-margin-top: 92px;
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  bottom: 22px;
  width: 3px;
  background: rgba(76, 122, 99, .55);
  transition: background-color .2s ease, box-shadow .2s ease;
}

.page-faq .faq-item:target {
  background: linear-gradient(90deg, var(--faq-glow), rgba(15, 42, 36, 0) 72%);
}

.page-faq .faq-item:target::before {
  background: var(--neon);
  box-shadow: 0 0 14px rgba(255, 122, 61, .55);
}

.page-faq .faq-item__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--stone);
}

.page-faq .faq-item:target .faq-item__num {
  color: var(--neon);
}

.page-faq .faq-item__q {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-size: clamp(17px, 2.5vw, 20px);
  font-weight: 700;
  line-height: 1.42;
  color: var(--paper);
}

.page-faq .faq-item__a {
  margin: 12px 0 0;
  max-width: 720px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(245, 241, 230, .78);
}

.page-faq .faq-item__next {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(255, 122, 61, .35);
  color: var(--neon);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  text-decoration: none;
}

.page-faq .faq-item__next span {
  transition: transform .16s ease;
}

.page-faq .faq-item__next:hover span,
.page-faq .faq-item__next:focus-visible span {
  transform: translateX(4px);
}

/* ---------- 结尾 ---------- */
.page-faq .faq-outro {
  margin-top: 56px;
  padding: 32px 24px 34px;
  border: var(--line-soft);
  border-radius: var(--r);
  background:
    linear-gradient(135deg, rgba(217, 169, 76, .1), rgba(15, 42, 36, 0) 62%),
    var(--faq-panel);
}

.page-faq .faq-outro h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(21px, 3.8vw, 28px);
  font-weight: 800;
  line-height: 1.22;
  color: var(--paper);
}

.page-faq .faq-outro p {
  margin: 12px 0 0;
  max-width: 640px;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(245, 241, 230, .78);
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-outro__fine {
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--stone);
}

.page-faq .faq-outro__fine a {
  color: var(--sand-lt);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-steps {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }

  .page-faq .faq-steps > li + li::before {
    content: "";
    position: absolute;
    top: 42px;
    left: -30px;
    width: 30px;
    height: 1px;
    background: var(--neon);
  }

  .page-faq .faq-steps > li + li::after {
    content: "";
    position: absolute;
    top: 38px;
    left: -12px;
    width: 8px;
    height: 8px;
    border-top: 1px solid var(--neon);
    border-right: 1px solid var(--neon);
    transform: rotate(45deg);
  }
}

@media (min-width: 920px) {
  .page-faq .faq-hero {
    grid-template-columns: 7fr 5fr;
    align-items: center;
    gap: 48px;
    padding: 44px 0 68px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 46px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 92px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 6px;
    overflow-x: hidden;
    overflow-y: auto;
    max-height: calc(100vh - 220px);
    padding: 0 4px 6px 0;
  }

  .page-faq .faq-index__btn {
    flex: none;
    width: 100%;
    white-space: normal;
  }

  .page-faq .faq-item__q {
    max-width: 46ch;
  }

  .page-faq .faq-outro {
    padding: 38px 40px 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__btn,
  .page-faq .faq-item__next span,
  .page-faq .faq-item::before {
    transition: none;
  }

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