.page-faq {
  --faq-body-text: rgba(242, 233, 216, .82);
  --faq-panel: rgba(14, 33, 27, .6);
  padding-bottom: clamp(56px, 8vw, 112px);
}

.page-faq .breadcrumb {
  padding-top: clamp(14px, 2.4vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(14px, 2.4vw, 30px);
}

.page-faq .faq-hero__head {
  max-width: 52rem;
}

.page-faq .faq-hero__eyebrow {
  color: var(--c-gold-soft);
  margin: 0 0 14px;
  letter-spacing: .2em;
}

.page-faq h1 {
  margin: 0 0 20px;
  font-size: clamp(2rem, 6.4vw, 4.1rem);
  line-height: 1.1;
  letter-spacing: -.022em;
  font-weight: 700;
  color: var(--c-cream);
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: var(--step-1);
  line-height: 1.8;
  color: var(--faq-body-text);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 136px;
  padding: 12px 18px;
  border: 1px solid var(--line-gold);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, rgba(22, 48, 42, .9), rgba(7, 19, 15, .9));
}

.page-faq .faq-fact__num {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  letter-spacing: .06em;
  color: var(--c-gold-soft);
}

.page-faq .faq-fact__label {
  font-size: var(--step--1);
  color: var(--c-mist);
}

.page-faq .faq-hero__figure {
  margin: clamp(26px, 4.6vw, 46px) 0 0;
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  margin-top: clamp(40px, 6vw, 84px);
}

.page-faq .faq-index {
  padding: 20px 18px;
  border: 1px solid var(--line-gold);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(22, 48, 42, .86), rgba(7, 19, 15, .9));
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: .2em;
  color: var(--c-gold-soft);
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  border-radius: var(--r-sm);
  text-decoration: none;
  color: var(--faq-body-text);
  transition: background-color .26s var(--ease), border-color .26s var(--ease), color .26s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: rgba(56, 225, 206, .09);
  border-left-color: var(--c-cyan);
  color: var(--c-cream);
}

.page-faq .faq-index__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: .08em;
  color: var(--c-gold);
}

.page-faq .faq-index__label {
  font-size: var(--step-0);
  line-height: 1.5;
}

.page-faq .faq-index__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-mist);
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-stream {
  display: grid;
  gap: clamp(34px, 4.6vw, 58px);
}

.page-faq .faq-group {
  scroll-margin-top: 124px;
}

.page-faq .faq-group .section-rule {
  margin-bottom: 14px;
}

.page-faq .faq-group__lead {
  margin: 0 0 22px;
  max-width: 64ch;
  font-size: var(--step-0);
  line-height: 1.8;
  color: var(--faq-body-text);
}

.page-faq .faq-item {
  margin-bottom: 10px;
  border: 1px solid var(--line-gold);
  border-radius: var(--r-md);
  background: var(--faq-panel);
  transition: border-color .28s var(--ease), background-color .28s var(--ease), transform .28s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(56, 225, 206, .44);
  background: rgba(22, 48, 42, .82);
}

.page-faq .faq-item__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__head:focus-visible {
  outline: 1px solid var(--c-cyan);
  outline-offset: -3px;
  border-radius: var(--r-md);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  font-size: var(--step-1);
  font-weight: 600;
  line-height: 1.55;
  color: var(--c-cream);
}

.page-faq .faq-item__icon {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 4px;
  border: 1px solid var(--line-gold-strong);
  border-radius: 50%;
  transition: border-color .28s var(--ease), transform .28s var(--ease);
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 5px;
  right: 5px;
  height: 1.5px;
  background: var(--c-gold-soft);
  transform: translateY(-50%);
  transition: background-color .28s var(--ease), opacity .28s var(--ease), transform .28s var(--ease);
}

.page-faq .faq-item__icon::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .faq-item[open] .faq-item__icon {
  border-color: var(--c-cyan);
  transform: rotate(90deg);
}

.page-faq .faq-item[open] .faq-item__icon::before,
.page-faq .faq-item[open] .faq-item__icon::after {
  background: var(--c-cyan);
}

.page-faq .faq-item[open] .faq-item__icon::after {
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 0 18px 18px;
}

.page-faq .faq-item__body p {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-mist);
  max-width: 68ch;
  font-size: var(--step-0);
  line-height: 1.78;
  color: var(--faq-body-text);
}

.page-faq .faq-item[open] .faq-item__body {
  animation: faq-reveal .3s var(--ease);
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 目录编号示意 ---------- */
.page-faq .faq-visual {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 26px;
}

.page-faq .faq-visual__figure {
  margin: 0;
}

.page-faq .faq-visual__diagram {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 20px 18px;
  border: 1px solid var(--line-gold);
  border-radius: var(--r-md);
  background: linear-gradient(155deg, rgba(22, 48, 42, .8), rgba(7, 19, 15, .86));
}

.page-faq .faq-visual__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: .18em;
  color: var(--c-gold-soft);
}

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

/* ---------- 结尾引导 ---------- */
.page-faq .faq-cta {
  padding: clamp(22px, 3.6vw, 36px);
  border: 1px solid var(--line-gold-strong);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(56, 225, 206, .13), transparent 58%),
    linear-gradient(150deg, rgba(22, 48, 42, .94), rgba(7, 19, 15, .94));
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 64ch;
  font-size: var(--step-0);
  line-height: 1.85;
  color: var(--faq-body-text);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-visual {
    grid-template-columns: 1.15fr 1fr;
    align-items: stretch;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: minmax(230px, .34fr) 1fr;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 124px;
    padding: 24px 20px;
  }

  .page-faq .faq-item[open] {
    transform: translateX(6px);
  }
}

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

  .page-faq .faq-item[open] {
    transform: none;
  }

  .page-faq .faq-item[open] .faq-item__body {
    animation: none;
  }
}