.page-faq {
  --f-bg: #F5F7FA;
  --f-surface: #FFFFFF;
  --f-ink: #1B2430;
  --f-muted: #5C6A7A;
  --f-line: rgba(27, 36, 48, .14);
  --f-line-soft: rgba(27, 36, 48, .07);
  --f-cyan: #0B8C77;
  --f-cyan-bright: #17C9AB;
  --f-cyan-20: rgba(23, 201, 171, .22);
  --f-amber: #A96A00;
  --f-dark: #070B0F;

  background: var(--f-bg);
  color: var(--f-ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--u) * 2) 0 calc(var(--u) * 5);
  background: linear-gradient(180deg, #FFFFFF 0%, #F5F7FA 78%, #F5F7FA 100%);
  border-bottom: 1px solid var(--f-line-soft);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(11, 140, 119, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 140, 119, .07) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 72%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 72%);
  pointer-events: none;
}

.page-faq .faq-hero > .container {
  position: relative;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--u) * 4);
  align-items: center;
  margin-top: calc(var(--u) * 3);
}

.page-faq .faq-kicker {
  margin: 0 0 calc(var(--u) * 1.5);
  font-size: .75rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--f-cyan);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.75rem, 1.15rem + 3vw, 3rem);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--f-ink);
}

.page-faq .faq-hero__lede {
  margin: calc(var(--u) * 2) 0 0;
  max-width: 46ch;
  font-family: var(--font-narrow);
  font-size: clamp(.95rem, .9rem + .2vw, 1.0625rem);
  line-height: 1.85;
  color: var(--f-muted);
}

.page-faq .faq-hero__metrics {
  list-style: none;
  margin: calc(var(--u) * 4) 0 0;
  padding: calc(var(--u) * 2.5) 0 0;
  border-top: 1px solid var(--f-line);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: calc(var(--u) * 1.5);
}

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

.page-faq .faq-metric__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.25rem);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--f-ink);
}

.page-faq .num-glow {
  color: var(--f-amber);
  text-shadow: 0 0 14px rgba(255, 183, 51, .45);
}

.page-faq .faq-metric__label {
  font-size: .75rem;
  line-height: 1.5;
  color: var(--f-muted);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--f-surface);
  border: 1px solid var(--f-line);
  box-shadow: 0 4px 0 rgba(27, 36, 48, .06);
}

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

.page-faq .faq-hero__figure figcaption {
  padding: calc(var(--u) * 1.5) calc(var(--u) * 2);
  font-size: .75rem;
  line-height: 1.6;
  color: var(--f-muted);
  border-top: 1px solid var(--f-line-soft);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--u) * 1);
  margin-top: calc(var(--u) * 4);
  padding-top: calc(var(--u) * 2);
  border-top: 1px dashed var(--f-line);
}

.page-faq .faq-jump a {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--f-line);
  background: var(--f-surface);
  font-size: .75rem;
  color: var(--f-muted);
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease;
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  border-color: var(--f-cyan-bright);
  color: var(--f-cyan);
}

/* ---------- 章节通用 ---------- */

.page-faq .faq-sec {
  padding: calc(var(--u) * 6) 0 0;
}

.page-faq .faq-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: calc(var(--u) * 2);
  align-items: start;
  border-top: 2px solid var(--f-ink);
  padding-top: calc(var(--u) * 2);
  margin-bottom: calc(var(--u) * 4);
}

.page-faq .faq-head__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.75rem, 1.2rem + 2.2vw, 2.75rem);
  line-height: .95;
  letter-spacing: -.03em;
  color: var(--f-cyan-20);
  -webkit-text-stroke: 1px rgba(11, 140, 119, .5);
}

.page-faq .faq-head__body h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.2rem, 1rem + 1vw, 1.6rem);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--f-ink);
}

.page-faq .faq-head__body p {
  margin: calc(var(--u) * 1) 0 0;
  font-family: var(--font-narrow);
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--f-muted);
}

/* ---------- 分类区 ---------- */

.page-faq .faq-catalog {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--u) * 4);
  align-items: start;
}

.page-faq .faq-catalog__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--u) * 2);
}

.page-faq .faq-cat {
  position: relative;
  padding: calc(var(--u) * 3) calc(var(--u) * 2.5) calc(var(--u) * 2.5);
  background: var(--f-surface);
  border: 1px solid var(--f-line);
  border-radius: var(--radius-sm);
  box-shadow: 0 3px 0 rgba(27, 36, 48, .05);
  transition: border-color .2s ease, box-shadow .2s ease;
}

.page-faq .faq-cat:hover {
  border-color: var(--f-cyan-bright);
  box-shadow: 0 5px 0 rgba(47, 243, 208, .28);
}

.page-faq .faq-cat__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--f-amber);
}

.page-faq .faq-cat h3 {
  margin: calc(var(--u) * 1) 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  letter-spacing: -.01em;
  color: var(--f-ink);
}

.page-faq .faq-cat p {
  margin: calc(var(--u) * 1) 0 0;
  font-family: var(--font-narrow);
  font-size: .875rem;
  line-height: 1.75;
  color: var(--f-muted);
}

.page-faq .faq-tree {
  margin: 0;
  padding: calc(var(--u) * 2);
  background: var(--f-surface);
  border: 1px solid var(--f-line);
  border-radius: var(--radius-sm);
  box-shadow: 0 3px 0 rgba(27, 36, 48, .05);
}

.page-faq .faq-tree__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-tree__axis {
  stroke: var(--f-cyan-bright);
  opacity: .55;
}

.page-faq .faq-tree__root rect {
  fill: #101821;
  stroke: var(--f-cyan-bright);
  stroke-width: 1.5;
}

.page-faq .faq-tree__root text {
  fill: #2FF3D0;
  font-family: var(--font-display);
}

.page-faq .faq-tree__node rect {
  fill: #FFFFFF;
  stroke: rgba(27, 36, 48, .16);
  stroke-width: 1.5;
  transition: stroke .2s ease;
}

.page-faq .faq-tree__node hover rect {
  stroke: var(--f-cyan-bright);
}

.page-faq .faq-tree__node:hover rect {
  stroke: var(--f-cyan-bright);
}

.page-faq .faq-tree__node text {
  fill: var(--f-ink);
  font-family: var(--font-display);
}

.page-faq .faq-tree__node .faq-tree__count {
  fill: var(--f-cyan);
  font-family: var(--font-body);
}

.page-faq .faq-tree figcaption {
  margin-top: calc(var(--u) * 2);
  font-size: .75rem;
  line-height: 1.7;
  color: var(--f-muted);
}

/* ---------- 问答列表 ---------- */

.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: calc(var(--u) * 1.5);
  margin-top: calc(var(--u) * 4);
}

.page-faq .faq-catalog + .faq-list {
  margin-top: calc(var(--u) * 5);
}

.page-faq .faq-item {
  --num-w: 56px;
  background: var(--f-surface);
  border: 1px solid var(--f-line);
  border-radius: var(--radius-sm);
  box-shadow: 0 3px 0 rgba(27, 36, 48, .05);
  transition: border-color .2s ease, box-shadow .2s ease;
}

.page-faq .faq-item:hover {
  border-color: var(--f-cyan-bright);
  box-shadow: 0 5px 0 rgba(47, 243, 208, .26);
}

.page-faq .faq-item__sum {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: var(--num-w) 1fr 20px;
  gap: calc(var(--u) * 2);
  align-items: start;
  padding: calc(var(--u) * 2.5) calc(var(--u) * 2.5) calc(var(--u) * 2.5);
}

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

.page-faq .faq-item__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.5rem;
  line-height: 1.15;
  letter-spacing: -.03em;
  color: var(--f-cyan-20);
  -webkit-text-stroke: 1.5px rgba(23, 201, 171, .62);
  text-shadow: 0 0 10px rgba(47, 243, 208, .22);
}

.page-faq .faq-item__q {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1rem, .94rem + .35vw, 1.1875rem);
  line-height: 1.5;
  letter-spacing: -.01em;
  color: var(--f-ink);
}

.page-faq .faq-item__mark {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 4px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--f-muted);
  transform: translate(-50%, -50%);
  transition: opacity .2s ease, transform .2s ease;
}

.page-faq .faq-item__mark::before {
  width: 12px;
  height: 1.5px;
}

.page-faq .faq-item__mark::after {
  width: 1.5px;
  height: 12px;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  opacity: 0;
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .faq-item[open] .faq-item__sum {
  padding-bottom: calc(var(--u) * 1.5);
}

.page-faq .faq-item__a {
  margin-left: calc(var(--num-w) + var(--u) * 2);
  padding: 0 calc(var(--u) * 2.5) calc(var(--u) * 2.5);
  font-family: var(--font-narrow);
  font-size: .9375rem;
  line-height: 1.9;
  color: var(--f-ink);
}

.page-faq .faq-item__a p {
  margin: 0;
}

.page-faq .faq-item__a p + p {
  margin-top: calc(var(--u) * 1.5);
}

.page-faq .faq-item__note {
  font-family: var(--font-body);
  font-size: .75rem;
  line-height: 1.7;
  color: var(--f-muted);
  padding-left: calc(var(--u) * 1.5);
  border-left: 2px solid var(--f-cyan-bright);
}

/* ---------- 检索区 ---------- */

.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--u) * 4);
  align-items: start;
}

.page-faq .faq-split .faq-list {
  margin-top: 0;
}

.page-faq .faq-shot {
  margin: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--f-dark);
  border: 1px solid var(--f-line);
  box-shadow: 0 4px 0 rgba(27, 36, 48, .08);
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 11;
  object-fit: cover;
}

.page-faq .faq-shot figcaption {
  padding: calc(var(--u) * 1.5) calc(var(--u) * 2);
  font-size: .75rem;
  line-height: 1.7;
  color: var(--muted);
  background: var(--f-dark);
}

/* ---------- 配置速查 ---------- */

.page-faq .faq-spec {
  background: #101821;
  border: 1px solid rgba(47, 243, 208, .24);
  border-radius: var(--radius-sm);
  padding: calc(var(--u) * 3);
  box-shadow: 0 4px 0 rgba(7, 11, 15, .18);
}

.page-faq .faq-spec__row {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: calc(var(--u) * 2);
  margin: 0;
  padding: calc(var(--u) * 1.25) 0;
  border-bottom: 1px dashed rgba(232, 237, 242, .14);
  font-family: var(--font-body);
  font-size: .8125rem;
  line-height: 1.8;
}

.page-faq .faq-spec__row:last-child {
  border-bottom: 0;
}

.page-faq .faq-spec__key {
  color: #7FE7DA;
}

.page-faq .faq-spec__val {
  color: var(--paper);
}

.page-faq .faq-spec__actions {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--u) * 1.5);
  margin-top: calc(var(--u) * 2.5);
}

/* ---------- 提醒勾选 ---------- */

.page-faq .faq-remind {
  list-style: none;
  margin: calc(var(--u) * 2) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--u) * 1.5);
}

.page-faq .faq-remind__item {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--u) * 1);
  padding: 8px 14px;
  border: 1px solid var(--f-line);
  border-radius: 999px;
  background: var(--f-bg);
  font-family: var(--font-body);
  font-size: .8125rem;
  color: var(--f-muted);
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}

.page-faq .faq-remind__item input {
  width: 14px;
  height: 14px;
  accent-color: var(--f-cyan-bright);
  margin: 0;
}

.page-faq [data-reminder-row].is-armed .faq-remind__item {
  border-color: var(--f-amber);
  color: var(--f-amber);
  background: rgba(255, 183, 51, .12);
}

/* ---------- 收尾 ---------- */

.page-faq .faq-end {
  margin-top: calc(var(--u) * 8);
  background: var(--f-dark);
  border-top: 3px solid var(--cyan);
  padding: calc(var(--u) * 7) 0;
}

.page-faq .faq-end__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--u) * 4);
  align-items: center;
}

.page-faq .faq-end h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.35rem, 1.1rem + 1.4vw, 2rem);
  line-height: 1.25;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-end p {
  margin: calc(var(--u) * 2) 0 0;
  max-width: 52ch;
  font-family: var(--font-narrow);
  font-size: .9375rem;
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .faq-end__links {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--u) * 1.5);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-catalog__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: calc(var(--u) * 3) 0 calc(var(--u) * 6);
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 1.08fr .92fr;
  }

  .page-faq .faq-catalog {
    grid-template-columns: 1.12fr .88fr;
  }

  .page-faq .faq-split {
    grid-template-columns: 1fr .6fr;
  }

  .page-faq .faq-end__inner {
    grid-template-columns: 1.1fr auto;
  }
}

@media (max-width: 639px) {
  .page-faq .faq-item {
    --num-w: 34px;
  }

  .page-faq .faq-item__num {
    font-size: 1.125rem;
    -webkit-text-stroke-width: 1.2px;
  }

  .page-faq .faq-item__sum {
    column-gap: calc(var(--u) * 1.5);
  }

  .page-faq .faq-item__a {
    margin-left: 0;
    padding-left: calc(var(--u) * 2.5);
  }

  .page-faq .faq-spec__row {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .page-faq .faq-head {
    gap: calc(var(--u) * 1.5);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .faq-item,
  .page-faq .faq-jump a,
  .page-faq .faq-remind__item {
    transition: none;
  }
}
</main>

.page-faq {
  --f-bg: #F5F7FA;
  --f-surface: #FFFFFF;
  --f-ink: #1B2430;
  --f-muted: #5C6A7A;
  --f-line: rgba(27, 36, 48, .14);
  --f-line-soft: rgba(27, 36, 48, .07);
  --f-cyan: #0B8C77;
  --f-cyan-bright: #17C9AB;
  --f-cyan-20: rgba(23, 201, 171, .22);
  --f-amber: #A96A00;
  --f-dark: #070B0F;

  background: var(--f-bg);
  color: var(--f-ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--u) * 2) 0 calc(var(--u) * 5);
  background: linear-gradient(180deg, #FFFFFF 0%, #F5F7FA 78%, #F5F7FA 100%);
  border-bottom: 1px solid var(--f-line-soft);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(11, 140, 119, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 140, 119, .07) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 72%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 72%);
  pointer-events: none;
}

.page-faq .faq-hero > .container {
  position: relative;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--u) * 4);
  align-items: center;
  margin-top: calc(var(--u) * 3);
}

.page-faq .faq-kicker {
  margin: 0 0 calc(var(--u) * 1.5);
  font-size: .75rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--f-cyan);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.75rem, 1.15rem + 3vw, 3rem);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--f-ink);
}

.page-faq .faq-hero__lede {
  margin: calc(var(--u) * 2) 0 0;
  max-width: 46ch;
  font-family: var(--font-narrow);
  font-size: clamp(.95rem, .9rem + .2vw, 1.0625rem);
  line-height: 1.85;
  color: var(--f-muted);
}

.page-faq .faq-hero__metrics {
  list-style: none;
  margin: calc(var(--u) * 4) 0 0;
  padding: calc(var(--u) * 2.5) 0 0;
  border-top: 1px solid var(--f-line);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: calc(var(--u) * 1.5);
}

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

.page-faq .faq-metric__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.25rem);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--f-ink);
}

.page-faq .num-glow {
  color: var(--f-amber);
  text-shadow: 0 0 14px rgba(255, 183, 51, .45);
}

.page-faq .faq-metric__label {
  font-size: .75rem;
  line-height: 1.5;
  color: var(--f-muted);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--f-surface);
  border: 1px solid var(--f-line);
  box-shadow: 0 4px 0 rgba(27, 36, 48, .06);
}

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

.page-faq .faq-hero__figure figcaption {
  padding: calc(var(--u) * 1.5) calc(var(--u) * 2);
  font-size: .75rem;
  line-height: 1.6;
  color: var(--f-muted);
  border-top: 1px solid var(--f-line-soft);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--u) * 1);
  margin-top: calc(var(--u) * 4);
  padding-top: calc(var(--u) * 2);
  border-top: 1px dashed var(--f-line);
}

.page-faq .faq-jump a {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--f-line);
  background: var(--f-surface);
  font-size: .75rem;
  color: var(--f-muted);
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease;
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  border-color: var(--f-cyan-bright);
  color: var(--f-cyan);
}

/* ---------- 章节通用 ---------- */

.page-faq .faq-sec {
  padding: calc(var(--u) * 6) 0 0;
}

.page-faq .faq-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: calc(var(--u) * 2);
  align-items: start;
  border-top: 2px solid var(--f-ink);
  padding-top: calc(var(--u) * 2);
  margin-bottom: calc(var(--u) * 4);
}

.page-faq .faq-head__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.75rem, 1.2rem + 2.2vw, 2.75rem);
  line-height: .95;
  letter-spacing: -.03em;
  color: var(--f-cyan-20);
  -webkit-text-stroke: 1px rgba(11, 140, 119, .5);
}

.page-faq .faq-head__body h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.2rem, 1rem + 1vw, 1.6rem);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--f-ink);
}

.page-faq .faq-head__body p {
  margin: calc(var(--u) * 1) 0 0;
  font-family: var(--font-narrow);
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--f-muted);
}

/* ---------- 分类区 ---------- */

.page-faq .faq-catalog {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--u) * 4);
  align-items: start;
}

.page-faq .faq-catalog__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--u) * 2);
}

.page-faq .faq-cat {
  position: relative;
  padding: calc(var(--u) * 3) calc(var(--u) * 2.5) calc(var(--u) * 2.5);
  background: var(--f-surface);
  border: 1px solid var(--f-line);
  border-radius: var(--radius-sm);
  box-shadow: 0 3px 0 rgba(27, 36, 48, .05);
  transition: border-color .2s ease, box-shadow .2s ease;
}

.page-faq .faq-cat:hover {
  border-color: var(--f-cyan-bright);
  box-shadow: 0 5px 0 rgba(47, 243, 208, .28);
}

.page-faq .faq-cat__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--f-amber);
}

.page-faq .faq-cat h3 {
  margin: calc(var(--u) * 1) 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  letter-spacing: -.01em;
  color: var(--f-ink);
}

.page-faq .faq-cat p {
  margin: calc(var(--u) * 1) 0 0;
  font-family: var(--font-narrow);
  font-size: .875rem;
  line-height: 1.75;
  color: var(--f-muted);
}

.page-faq .faq-tree {
  margin: 0;
  padding: calc(var(--u) * 2);
  background: var(--f-surface);
  border: 1px solid var(--f-line);
  border-radius: var(--radius-sm);
  box-shadow: 0 3px 0 rgba(27, 36, 48, .05);
}

.page-faq .faq-tree__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-tree__axis {
  stroke: var(--f-cyan-bright);
  opacity: .55;
}

.page-faq .faq-tree__root rect {
  fill: #101821;
  stroke: var(--f-cyan-bright);
  stroke-width: 1.5;
}

.page-faq .faq-tree__root text {
  fill: #2FF3D0;
  font-family: var(--font-display);
}

.page-faq .faq-tree__node rect {
  fill: #FFFFFF;
  stroke: rgba(27, 36, 48, .16);
  stroke-width: 1.5;
  transition: stroke .2s ease;
}

.page-faq .faq-tree__node:hover rect {
  stroke: var(--f-cyan-bright);
}

.page-faq .faq-tree__node text {
  fill: var(--f-ink);
  font-family: var(--font-display);
}

.page-faq .faq-tree__node .faq-tree__count {
  fill: var(--f-cyan);
  font-family: var(--font-body);
}

.page-faq .faq-tree figcaption {
  margin-top: calc(var(--u) * 2);
  font-size: .75rem;
  line-height: 1.7;
  color: var(--f-muted);
}

/* ---------- 问答列表 ---------- */

.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: calc(var(--u) * 1.5);
  margin-top: calc(var(--u) * 4);
}

.page-faq .faq-catalog + .faq-list {
  margin-top: calc(var(--u) * 5);
}

.page-faq .faq-item {
  --num-w: 56px;
  background: var(--f-surface);
  border: 1px solid var(--f-line);
  border-radius: var(--radius-sm);
  box-shadow: 0 3px 0 rgba(27, 36, 48, .05);
  transition: border-color .2s ease, box-shadow .2s ease;
}

.page-faq .faq-item:hover {
  border-color: var(--f-cyan-bright);
  box-shadow: 0 5px 0 rgba(47, 243, 208, .26);
}

.page-faq .faq-item__sum {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: var(--num-w) 1fr 20px;
  gap: calc(var(--u) * 2);
  align-items: start;
  padding: calc(var(--u) * 2.5);
}

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

.page-faq .faq-item__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.5rem;
  line-height: 1.15;
  letter-spacing: -.03em;
  color: var(--f-cyan-20);
  -webkit-text-stroke: 1.5px rgba(23, 201, 171, .62);
  text-shadow: 0 0 10px rgba(47, 243, 208, .22);
}

.page-faq .faq-item__q {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1rem, .94rem + .35vw, 1.1875rem);
  line-height: 1.5;
  letter-spacing: -.01em;
  color: var(--f-ink);
}

.page-faq .faq-item__mark {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 4px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--f-muted);
  transform: translate(-50%, -50%);
  transition: opacity .2s ease, transform .2s ease;
}

.page-faq .faq-item__mark::before {
  width: 12px;
  height: 1.5px;
}

.page-faq .faq-item__mark::after {
  width: 1.5px;
  height: 12px;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  opacity: 0;
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .faq-item[open] .faq-item__sum {
  padding-bottom: calc(var(--u) * 1.5);
}

.page-faq .faq-item__a {
  margin-left: calc(var(--num-w) + var(--u) * 2);
  padding: 0 calc(var(--u) * 2.5) calc(var(--u) * 2.5);
  font-family: var(--font-narrow);
  font-size: .9375rem;
  line-height: 1.9;
  color: var(--f-ink);
}

.page-faq .faq-item__a p {
  margin: 0;
}

.page-faq .faq-item__a p + p {
  margin-top: calc(var(--u) * 1.5);
}

.page-faq .faq-item__note {
  font-family: var(--font-body);
  font-size: .75rem;
  line-height: 1.7;
  color: var(--f-muted);
  padding-left: calc(var(--u) * 1.5);
  border-left: 2px solid var(--f-cyan-bright);
}

/* ---------- 检索区 ---------- */

.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--u) * 4);
  align-items: start;
}

.page-faq .faq-split .faq-list {
  margin-top: 0;
}

.page-faq .faq-shot {
  margin: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--f-dark);
  border: 1px solid var(--f-line);
  box-shadow: 0 4px 0 rgba(27, 36, 48, .08);
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 11;
  object-fit: cover;
}

.page-faq .faq-shot figcaption {
  padding: calc(var(--u) * 1.5) calc(var(--u) * 2);
  font-size: .75rem;
  line-height: 1.7;
  color: var(--muted);
  background: var(--f-dark);
}

/* ---------- 配置速查 ---------- */

.page-faq .faq-spec {
  background: #101821;
  border: 1px solid rgba(47, 243, 208, .24);
  border-radius: var(--radius-sm);
  padding: calc(var(--u) * 3);
  box-shadow: 0 4px 0 rgba(7, 11, 15, .18);
}

.page-faq .faq-spec__row {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: calc(var(--u) * 2);
  margin: 0;
  padding: calc(var(--u) * 1.25) 0;
  border-bottom: 1px dashed rgba(232, 237, 242, .14);
  font-family: var(--font-body);
  font-size: .8125rem;
  line-height: 1.8;
}

.page-faq .faq-spec__row:last-child {
  border-bottom: 0;
}

.page-faq .faq-spec__key {
  color: #7FE7DA;
}

.page-faq .faq-spec__val {
  color: var(--paper);
}

.page-faq .faq-spec__actions {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--u) * 1.5);
  margin-top: calc(var(--u) * 2.5);
}

/* ---------- 提醒勾选 ---------- */

.page-faq .faq-remind {
  list-style: none;
  margin: calc(var(--u) * 2) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--u) * 1.5);
}

.page-faq .faq-remind__item {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--u) * 1);
  padding: 8px 14px;
  border: 1px solid var(--f-line);
  border-radius: 999px;
  background: var(--f-bg);
  font-family: var(--font-body);
  font-size: .8125rem;
  color: var(--f-muted);
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}

.page-faq .faq-remind__item input {
  width: 14px;
  height: 14px;
  accent-color: var(--f-cyan-bright);
  margin: 0;
}

.page-faq [data-reminder-row].is-armed .faq-remind__item {
  border-color: var(--f-amber);
  color: var(--f-amber);
  background: rgba(255, 183, 51, .12);
}

/* ---------- 收尾 ---------- */

.page-faq .faq-end {
  margin-top: calc(var(--u) * 8);
  background: var(--f-dark);
  border-top: 3px solid var(--cyan);
  padding: calc(var(--u) * 7) 0;
}

.page-faq .faq-end__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--u) * 4);
  align-items: center;
}

.page-faq .faq-end h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.35rem, 1.1rem + 1.4vw, 2rem);
  line-height: 1.25;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-end p {
  margin: calc(var(--u) * 2) 0 0;
  max-width: 52ch;
  font-family: var(--font-narrow);
  font-size: .9375rem;
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .faq-end__links {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--u) * 1.5);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-catalog__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: calc(var(--u) * 3) 0 calc(var(--u) * 6);
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 1.08fr .92fr;
  }

  .page-faq .faq-catalog {
    grid-template-columns: 1.12fr .88fr;
  }

  .page-faq .faq-split {
    grid-template-columns: 1fr .6fr;
  }

  .page-faq .faq-end__inner {
    grid-template-columns: 1.1fr auto;
  }
}

@media (max-width: 639px) {
  .page-faq .faq-item {
    --num-w: 34px;
  }

  .page-faq .faq-item__num {
    font-size: 1.125rem;
    -webkit-text-stroke-width: 1.2px;
  }

  .page-faq .faq-item__sum {
    column-gap: calc(var(--u) * 1.5);
    padding: calc(var(--u) * 2);
  }

  .page-faq .faq-item__a {
    margin-left: 0;
    padding-left: calc(var(--u) * 2);
    padding-right: calc(var(--u) * 2);
  }

  .page-faq .faq-spec {
    padding: calc(var(--u) * 2);
  }

  .page-faq .faq-spec__row {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .page-faq .faq-head {
    gap: calc(var(--u) * 1.5);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .faq-item,
  .page-faq .faq-jump a,
  .page-faq .faq-remind__item,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after {
    transition: none;
  }
}