.page-faq {
  --faq-sticky-top: 132px;
  --faq-gutter: clamp(40px, 5vw, 72px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-lg);
  align-items: start;
  margin-top: var(--gap-md);
}

.page-faq .faq-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(30px, 5.2vw, var(--fs-1));
  line-height: 1.24;
  letter-spacing: 0.04em;
  margin: var(--gap-sm) 0 var(--gap-md);
  color: var(--ink-deep);
}

.page-faq .faq-hero__intro .lede {
  max-width: 44em;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-sm);
  margin-top: var(--gap-md);
}

/* ---------- 首屏右侧三件事 ---------- */
.page-faq .faq-quick {
  background: var(--cream);
  border: 1px solid var(--ice-line);
  border-radius: var(--r-panel);
  padding: clamp(22px, 3vw, 32px);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-quick__title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--warm-gray);
  margin: 0 0 var(--gap-sm);
}

.page-faq .faq-quick__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-quick__item {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 12px;
  padding: 14px 0;
}

.page-faq .faq-quick__item + .faq-quick__item {
  border-top: 1px solid var(--ice-line);
}

.page-faq .faq-quick__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
  padding-top: 3px;
}

.page-faq .faq-quick__text {
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-faq .faq-quick__text strong {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink-deep);
}

/* ---------- 索引 + 问答流 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-lg);
}

.page-faq .faq-index__title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--warm-gray);
  margin: 0 0 var(--gap-sm);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 4px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  align-items: baseline;
  padding: 10px 12px;
  border-left: 2px solid var(--ice-line);
  text-decoration: none;
  font-size: 15px;
  color: var(--text-soft);
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--ink-deep);
  border-left-color: var(--gold);
  background-color: rgba(201, 160, 85, 0.1);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .faq-flow {
  min-width: 0;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: var(--faq-sticky-top);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(52px, 7vw, 84px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 16px;
  align-items: baseline;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--gold-mist);
  margin-bottom: var(--gap-md);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .faq-group__title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, var(--fs-3));
  letter-spacing: 0.04em;
  line-height: 1.3;
  margin: 0;
  color: var(--ink-deep);
}

.page-faq .faq-group__desc {
  grid-column: 2;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0 0 var(--gap-md);
}

.page-faq .faq-figure .img-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .faq-figure__caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 1.7;
  color: var(--warm-gray);
}

/* ---------- 深色规则面板 ---------- */
.page-faq .rules-panel {
  position: relative;
  overflow: hidden;
  margin: 0 0 var(--gap-md);
  padding: clamp(24px, 3.4vw, 40px);
  border-radius: var(--r-panel);
  border: 1px solid rgba(201, 160, 85, 0.42);
  background: linear-gradient(155deg, var(--ink-deep) 0%, var(--ink-night) 100%);
  color: var(--mist);
  box-shadow: var(--shadow-panel);
}

.page-faq .rules-panel::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -90px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 160, 85, 0.22), transparent 68%);
  pointer-events: none;
}

.page-faq .rules-panel__title {
  position: relative;
  font-family: var(--font-serif);
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: 0.05em;
  line-height: 1.35;
  margin: 0 0 10px;
  color: var(--mist);
}

.page-faq .rules-panel__note {
  position: relative;
  margin: 0 0 var(--gap-md);
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(243, 245, 247, 0.72);
}

.page-faq .rules-steps {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .rules-steps li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  align-items: baseline;
  padding-top: 14px;
  border-top: 1px solid rgba(243, 245, 247, 0.14);
  font-size: 15px;
  line-height: 1.8;
  color: rgba(243, 245, 247, 0.9);
}

.page-faq .rules-steps li:first-child {
  padding-top: 0;
  border-top: none;
}

.page-faq .rules-steps__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gold-mist);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa-list {
  border-top: 1px solid var(--ice-line);
}

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

.page-faq .qa summary {
  display: grid;
  grid-template-columns: 1fr 22px;
  gap: 16px;
  align-items: start;
  padding: 20px 2px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.62;
  letter-spacing: 0.02em;
  color: #2a2f38;
  transition: color 0.22s var(--ease);
}

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

.page-faq .qa summary:hover,
.page-faq .qa summary:focus-visible {
  color: var(--ink-deep);
}

.page-faq .qa summary::after {
  content: "+";
  justify-self: end;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--warm-gray);
  transition: color 0.22s var(--ease);
}

.page-faq .qa summary:hover::after,
.page-faq .qa summary:focus-visible::after {
  color: var(--gold);
}

.page-faq .qa[open] summary::after {
  content: "−";
  color: var(--gold);
}

.page-faq .qa__body {
  padding: 0 40px 22px 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-faq .qa[open] .qa__body {
  animation: faq-body-in 0.28s var(--ease);
}

@keyframes faq-body-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(52px, 7vw, 84px);
  padding: clamp(28px, 4vw, 48px);
  border-radius: var(--r-panel);
  border: 1px solid var(--ice-line);
  background: var(--cream);
  display: grid;
  gap: var(--gap-md);
  align-items: center;
}

.page-faq .faq-cta__title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, var(--fs-3));
  letter-spacing: 0.04em;
  line-height: 1.35;
  margin: 0 0 10px;
  color: var(--ink-deep);
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-sm);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--gap-lg);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--gap-xl);
  }

  .page-faq .faq-body {
    grid-template-columns: minmax(0, 216px) minmax(0, 1fr);
    gap: var(--faq-gutter);
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky-top);
    align-self: start;
  }

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

@media (max-width: 640px) {
  .page-faq .qa summary {
    grid-template-columns: 1fr 18px;
    gap: 10px;
    font-size: 16px;
  }

  .page-faq .qa__body {
    padding-right: 8px;
  }

  .page-faq .rules-steps li {
    grid-template-columns: 28px 1fr;
    gap: 10px;
  }
}