.page-faq {
  --faq-shadow: 6px 6px 0 rgba(28, 92, 72, .5);
  --faq-shadow-strong: 8px 8px 0 rgba(28, 92, 72, .55);
  --faq-glow: rgba(61, 242, 198, .14);
  background: var(--ink-900);
  color: var(--text);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  padding: 18px 0 2px;
}

.page-faq .faq-crumbs .crumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--text-muted);
}

.page-faq .faq-crumbs .crumbs__link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-crumbs .crumbs__link:hover,
.page-faq .faq-crumbs .crumbs__link:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-crumbs .crumbs__item + .crumbs__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--ink-600);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  margin-top: 20px;
  border-top: 2px solid var(--ink-600);
  border-bottom: 2px solid var(--ink-600);
  background:
    radial-gradient(130% 100% at 92% -14%, var(--faq-glow), transparent 58%),
    radial-gradient(90% 80% at 4% 116%, rgba(255, 138, 43, .12), transparent 62%),
    var(--ink-900);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(28, 92, 72, .3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28, 92, 72, .3) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .7), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .7), transparent 76%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
  padding: 30px 0 46px;
}

.page-faq .faq-hero__eyebrow {
  display: inline-block;
  margin: 0 0 18px;
  padding: 6px 12px;
  border: 2px solid var(--ink-600);
  background: var(--ink-800);
  box-shadow: 4px 4px 0 rgba(28, 92, 72, .45);
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 7vw, 3.6rem);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-faq .faq-hero__lede {
  margin: 0 0 26px;
  max-width: 32em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__facts li {
  display: grid;
  gap: 4px;
  padding: 12px 12px 11px;
  border: 2px solid var(--ink-600);
  background: var(--ink-800);
  min-width: 0;
}

.page-faq .faq-hero__facts .mono {
  font-family: var(--font-mono);
  font-size: clamp(.95rem, 3.2vw, 1.3rem);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.page-faq .faq-hero__facts em {
  font-style: normal;
  font-size: .74rem;
  line-height: 1.4;
  color: var(--text-muted);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 2px solid var(--ink-600);
  background: var(--ink-800);
  box-shadow: var(--faq-shadow-strong);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding: 40px 0 20px;
}

.page-faq .faq-body__inner {
  display: grid;
  gap: 28px;
  align-items: start;
}

/* ---------- 左侧分类索引 ---------- */
.page-faq .faq-index {
  border: 2px solid var(--ink-600);
  background: var(--ink-800);
  padding: 18px 16px 16px;
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: .04em;
  color: var(--text);
}

.page-faq .faq-index__list {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border: 2px solid transparent;
  color: var(--text-muted);
  text-decoration: none;
  font-size: .9rem;
  transition: border-color 240ms var(--ease), color 240ms var(--ease), background-color 240ms var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--cyan);
  background: rgba(61, 242, 198, .09);
  color: var(--text);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .faq-index__name {
  min-width: 0;
  overflow-wrap: anywhere;
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--orange);
  border: 1px solid var(--orange-deep);
  padding: 1px 6px;
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-index__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--ink-600);
  font-size: .76rem;
  line-height: 1.65;
  color: var(--text-muted);
}

/* ---------- 右侧问答 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 34px;
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 26px);
  min-width: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--ink-600);
}

.page-faq .faq-group__idx {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.25rem, 3.6vw, 1.6rem);
  letter-spacing: -.01em;
  color: var(--text);
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.page-faq .faq-item {
  margin-bottom: 10px;
  border: 2px solid var(--ink-600);
  background: var(--ink-800);
  transition: border-color 240ms var(--ease);
}

.page-faq .faq-item:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item[open] {
  border-color: var(--cyan);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: .97rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
}

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

.page-faq .faq-item__q:hover .faq-item__label,
.page-faq .faq-item__q:focus-visible .faq-item__label {
  color: var(--cyan);
}

.page-faq .faq-item__label {
  flex: 1 1 auto;
  min-width: 0;
  transition: color 200ms var(--ease);
}

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  border: 2px solid var(--ink-600);
  background: var(--ink-900);
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 240ms var(--ease), opacity 240ms var(--ease);
}

.page-faq .faq-item__sign::before {
  left: 3px;
  right: 3px;
  top: 7px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  top: 3px;
  bottom: 3px;
  left: 7px;
  width: 2px;
}

.page-faq .faq-item[open] .faq-item__sign {
  border-color: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__a {
  border-top: 2px solid var(--cyan);
  background: var(--paper);
  color: var(--ink-text);
}

.page-faq .faq-item__a p {
  margin: 0;
  padding: 15px 16px;
  max-width: 60ch;
  font-size: .94rem;
  line-height: 1.82;
  color: var(--ink-text);
}

.page-faq .faq-item__a p + p {
  padding-top: 0;
}

.page-faq .faq-item__a a {
  color: var(--orange-deep);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--ink-text);
  background: rgba(255, 138, 43, .3);
}

/* ---------- 人工支持 ---------- */
.page-faq .faq-help {
  padding: 48px 0 60px;
  border-top: 2px solid var(--ink-600);
  background:
    radial-gradient(110% 90% at 10% 0%, rgba(61, 242, 198, .1), transparent 60%),
    var(--ink-900);
}

.page-faq .faq-help__inner {
  display: grid;
  gap: 26px;
  align-items: center;
}

.page-faq .faq-help__figure {
  margin: 0;
  border: 2px solid var(--ink-600);
  background: var(--ink-800);
  box-shadow: var(--faq-shadow-strong);
}

.page-faq .faq-help__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-help__card {
  border: 2px solid var(--paper-line);
  background: var(--paper);
  color: var(--ink-text);
  padding: 24px 20px 22px;
  box-shadow: 8px 8px 0 rgba(255, 138, 43, .34);
}

.page-faq .faq-help__card h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 4.4vw, 1.9rem);
  letter-spacing: -.01em;
  color: var(--ink-text);
}

.page-faq .faq-help__card > p {
  margin: 0 0 18px;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--ink-text-muted);
  max-width: 40ch;
}

.page-faq .faq-help__meta {
  display: grid;
  gap: 9px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-help__meta li {
  display: grid;
  gap: 3px;
  padding: 10px 12px;
  border-left: 4px solid var(--orange-deep);
  background: var(--paper-2);
  min-width: 0;
}

.page-faq .faq-help__k {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--orange-deep);
}

.page-faq .faq-help__v {
  font-family: var(--font-mono);
  font-size: .88rem;
  line-height: 1.5;
  color: var(--ink-text);
  overflow-wrap: anywhere;
}

.page-faq .faq-help__prep {
  margin: 0 0 20px;
  padding-top: 14px;
  border-top: 2px dashed var(--paper-line);
  font-size: .82rem;
  line-height: 1.72;
  color: var(--ink-text-muted);
}

.page-faq .faq-help__card .btn {
  font-family: var(--font-display);
  letter-spacing: .04em;
}

/* ---------- 响应式 ---------- */
@media (max-width: 419px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 720px) {
  .page-faq .faq-hero__inner {
    padding: 40px 0 56px;
  }

  .page-faq .faq-hero__facts {
    gap: 12px;
  }

  .page-faq .faq-item__q {
    padding: 15px 18px;
    font-size: 1rem;
  }

  .page-faq .faq-item__a p {
    padding: 16px 18px;
  }

  .page-faq .faq-help__card {
    padding: 28px 26px 26px;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: 38px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: var(--gap);
    align-items: center;
    padding: 52px 0 64px;
  }

  .page-faq .faq-hero__lede {
    font-size: 1.05rem;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-body {
    padding: 54px 0 28px;
  }

  .page-faq .faq-body__inner {
    grid-template-columns: 264px minmax(0, 1fr);
    gap: 40px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }

  .page-faq .faq-list {
    gap: 40px;
  }

  .page-faq .faq-help {
    padding: 64px 0 76px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-index__link,
  .page-faq .faq-item__label,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after {
    transition: none;
  }
}