.page-faq {
  --faq-idx-w: 250px;
  color: var(--white);
  background: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 40px 0 34px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 140% at 88% 0%, rgba(25, 240, 200, 0.10), transparent 58%),
    linear-gradient(180deg, var(--slate) 0%, var(--ink) 80%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(36, 59, 54, 0.5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36, 59, 54, 0.5) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 76%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 76%);
  pointer-events: none;
}

.page-faq .faq-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 7.2vw, 58px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.015em;
  max-width: 16ch;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 60ch;
}

.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-stats li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-stats .num {
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-top: 36px;
  padding-bottom: 64px;
}

/* ---------- 粘性分类索引 ---------- */
.page-faq .faq-index {
  align-self: start;
  border: 1px solid var(--line);
  background: var(--charcoal);
  border-radius: var(--radius);
  padding: 16px 14px;
}

.page-faq .faq-index__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 8px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--white);
  text-decoration: none;
  transition: border-color 140ms var(--ease), background-color 140ms var(--ease), color 140ms var(--ease);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--cyan);
  background: var(--slate);
  color: var(--cyan);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-flow {
  min-width: 0;
}

.page-faq .faq-block {
  scroll-margin-top: calc(var(--header-h) + 24px);
  margin-bottom: 46px;
}

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-block__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-faq .faq-block__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 3.2vw, 30px);
  line-height: 1.24;
  font-weight: 700;
}

.page-faq .faq-block--party .faq-block__head {
  border-bottom-color: rgba(255, 106, 31, 0.45);
}

.page-faq .faq-block--party .faq-block__no {
  color: var(--orange);
}

/* ---------- 三步流程 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .step {
  position: relative;
  padding: 18px 16px 16px;
  border: 1px solid var(--line);
  background: var(--charcoal);
  border-radius: var(--radius);
  transition: border-color 140ms var(--ease), transform 140ms var(--ease);
}

.page-faq .step:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-faq .step__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--orange);
}

.page-faq .step__title {
  margin: 10px 0 8px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
}

.page-faq .step__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: 8px;
}

.page-faq .qa {
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  background: var(--charcoal);
  border-radius: var(--radius);
  transition: border-color 140ms var(--ease), background-color 140ms var(--ease);
}

.page-faq .qa:hover {
  border-left-color: var(--cyan);
}

.page-faq .qa[open] {
  border-left-color: var(--cyan);
  background: var(--slate);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .qa__idx {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .qa__text {
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
}

.page-faq .qa__mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-left: auto;
  margin-top: 5px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
}

.page-faq .qa__mark::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-faq .qa__mark::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
  transition: transform 160ms var(--ease);
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
}

.page-faq .qa__a {
  padding: 0 16px 16px 47px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 62ch;
}

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

.page-faq .qa__a a:hover {
  color: var(--white);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 22px;
}

.page-faq .faq-figure img,
.page-faq .faq-map {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--charcoal);
}

.page-faq .faq-figure img {
  object-fit: cover;
  filter: saturate(0.92) contrast(1.06);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 68ch;
}

.page-faq .faq-figure--map {
  margin-top: 4px;
}

/* ---------- 收尾行动区 ---------- */
.page-faq .faq-cta {
  margin-top: 8px;
  padding: 26px 20px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--orange);
  background:
    linear-gradient(120deg, rgba(255, 106, 31, 0.10), transparent 62%),
    var(--charcoal);
  border-radius: var(--radius);
}

.page-faq .faq-cta__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-faq .faq-cta__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.6vw, 32px);
  line-height: 1.22;
}

.page-faq .faq-cta__text {
  margin: 12px 0 20px;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }
  .page-faq .faq-cta {
    padding: 32px 30px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 58px 0 50px;
  }
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-idx-w) minmax(0, 1fr);
    gap: 52px;
    padding-top: 44px;
    padding-bottom: 84px;
  }
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    padding: 18px 16px;
  }
  .page-faq .faq-block {
    margin-bottom: 58px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step:hover {
    transform: none;
  }
  .page-faq .qa__mark::after {
    transition: none;
  }
}