/* ===== 常见问答页 · 页面专属样式 ===== */
.page-faq {
  --faq-num-w: 2.4em;
  --faq-ink-soft: #5F726B;
  --faq-paper-soft: rgba(244, 246, 241, .8);
  --faq-line-soft: rgba(143, 168, 160, .3);
  background: var(--paper);
  color: var(--text-dark);
  font-family: var(--font-body);
  overflow-x: clip;
}

@media (min-width: 720px) {
  .page-faq {
    --faq-num-w: 2.9em;
  }
}

.page-faq .ps-container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gut);
}

/* ---- 焦点 ---- */
.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---- 首屏 ---- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 34px 0 54px;
  color: var(--paper);
  background:
    radial-gradient(150% 110% at 84% -24%, rgba(60, 232, 192, .17) 0%, transparent 58%),
    linear-gradient(180deg, var(--ink-900) 0%, #081713 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan) 0%, rgba(60, 232, 192, .12) 46%, transparent 84%);
}

.page-faq .faq-hero .ps-crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 26px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-faq .faq-hero .ps-crumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-hero .ps-crumbs a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 36px;
  align-items: start;
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 60px;
    align-items: end;
  }
}

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

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  max-width: 19ch;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 6.4vw, 3.35rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: .01em;
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--faq-paper-soft);
}

/* ---- 首屏分类索引 ---- */
.page-faq .faq-toc {
  border: 1px solid var(--line-dark);
  border-left: 2px solid var(--cyan);
  background: linear-gradient(180deg, rgba(16, 42, 34, .92) 0%, rgba(10, 28, 23, .68) 100%);
  padding: 16px 16px 10px;
}

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

.page-faq .faq-toc__list {
  display: grid;
  gap: 2px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-toc__link {
  display: grid;
  grid-template-columns: 2.2em minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 9px 8px 9px 10px;
  color: var(--mist);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link[aria-current="true"] {
  color: var(--paper);
  border-left-color: var(--cyan);
  background: rgba(60, 232, 192, .08);
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-faq .faq-toc__name {
  font-size: .92rem;
  font-weight: 500;
}

/* ---- 问答区块 ---- */
.page-faq .faq-block {
  padding: 52px 0 58px;
}

.page-faq .faq-block--light {
  background: var(--paper);
  color: var(--text-dark);
}

.page-faq .faq-block--dark {
  background: linear-gradient(180deg, var(--ink-900) 0%, #081713 100%);
  color: var(--paper);
}

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

@media (min-width: 1024px) {
  .page-faq .faq-block__inner {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 60px;
  }

  .page-faq .faq-block__head {
    position: sticky;
    top: calc(var(--frame-h) + 30px);
  }
}

.page-faq .faq-block__head {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.page-faq .faq-block--dark .faq-block__head {
  border-top-color: var(--faq-line-soft);
}

.page-faq .faq-block__tag {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--faq-ink-soft);
}

.page-faq .faq-block--dark .faq-block__tag {
  color: var(--cyan);
}

.page-faq .faq-block__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.2vw, 2.1rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: .015em;
}

.page-faq .faq-block__note {
  margin: 14px 0 0;
  font-size: .9rem;
  line-height: 1.72;
  color: var(--faq-ink-soft);
}

.page-faq .faq-block--dark .faq-block__note {
  color: var(--mist);
}

/* ---- 问答列表 ---- */
.page-faq .faq-list {
  border-top: 1px solid var(--line);
}

.page-faq .faq-block--dark .faq-list {
  border-top-color: var(--faq-line-soft);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-block--dark .faq-item {
  border-bottom-color: var(--faq-line-soft);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: var(--faq-num-w) minmax(0, 1fr) 15px;
  gap: 14px;
  align-items: start;
  padding: 20px 0;
  list-style: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
  transition: color .22s var(--ease);
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__idx {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: .05em;
  color: var(--faq-ink-soft);
}

.page-faq .faq-block--dark .faq-item__idx {
  color: var(--mist);
}

.page-faq .faq-item__mark {
  position: relative;
  justify-self: end;
  width: 13px;
  height: 13px;
  margin-top: 5px;
  color: currentColor;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: currentColor;
  transition: transform .24s var(--ease), opacity .24s var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 6px;
  width: 13px;
  height: 1px;
}

.page-faq .faq-item__mark::after {
  left: 6px;
  top: 0;
  width: 1px;
  height: 13px;
}

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

.page-faq .faq-block--light .faq-item__q:hover,
.page-faq .faq-block--light .faq-item[open] > .faq-item__q {
  color: var(--ink-800);
}

.page-faq .faq-block--dark .faq-item__q:hover,
.page-faq .faq-block--dark .faq-item[open] > .faq-item__q {
  color: var(--cyan);
}

.page-faq .faq-block--light .faq-item[open] .faq-item__idx {
  color: var(--orange);
}

.page-faq .faq-block--dark .faq-item[open] .faq-item__idx {
  color: var(--orange);
}

/* ---- 答案 ---- */
.page-faq .faq-item__a {
  position: relative;
  padding: 0 0 26px calc(var(--faq-num-w) + 14px);
}

.page-faq .faq-item__a::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 4px;
  bottom: 22px;
  width: 2px;
  background: var(--cyan);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 68ch;
  font-size: .96rem;
  line-height: 1.8;
}

.page-faq .faq-block--light .faq-item__a p {
  color: var(--text-dark);
}

.page-faq .faq-block--dark .faq-item__a p {
  color: var(--faq-paper-soft);
}

.page-faq .faq-item__a a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-block--light .faq-item__a a {
  color: var(--ink-800);
  border-bottom-color: var(--orange);
}

.page-faq .faq-block--light .faq-item__a a:hover {
  color: var(--orange);
}

.page-faq .faq-block--dark .faq-item__a a {
  color: var(--paper);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-block--dark .faq-item__a a:hover {
  color: var(--cyan);
}

/* ---- 插图 ---- */
.page-faq .faq-figure {
  margin: 34px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-faq .faq-block--dark .faq-figure img {
  border-color: var(--faq-line-soft);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--faq-ink-soft);
}

.page-faq .faq-block--dark .faq-figure figcaption {
  color: var(--mist);
}

/* ---- 联系模块 ---- */
.page-faq .faq-help__grid {
  display: grid;
  gap: 26px;
}

@media (min-width: 720px) {
  .page-faq .faq-help__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
  }
}

.page-faq .faq-help__card {
  border-top: 2px solid var(--cyan);
  padding-top: 16px;
}

.page-faq .faq-help__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-help__v {
  display: block;
  margin-top: 12px;
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 700;
  letter-spacing: .015em;
  line-height: 1.3;
  color: var(--paper);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.page-faq a.faq-help__v {
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq a.faq-help__v:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-help__d {
  margin: 12px 0 0;
  font-size: .89rem;
  line-height: 1.72;
  color: var(--faq-paper-soft);
}

/* ---- 动效退化 ---- */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}