.page-faq {
  --faq-anchor-offset: 132px;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .breadcrumb {
  padding-top: clamp(18px, 3vw, 28px);
}

/* ---------- 分屏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(30px, 6vw, 64px);
  padding-top: clamp(20px, 4vw, 40px);
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(230px, 1fr) 2fr;
    align-items: start;
  }
}

/* ---------- 左栏：标题与索引 ---------- */
.page-faq .faq-rail {
  min-width: 0;
}

.page-faq .faq-title {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 5.6vw, 3.2rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--c-fog);
}

.page-faq .faq-lede {
  margin: 0 0 26px;
  max-width: 36ch;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--c-body);
}

.page-faq .faq-index {
  border-top: 1px solid var(--c-line);
  padding-top: 14px;
}

@media (min-width: 1000px) {
  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-anchor-offset);
  }
}

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

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 2.2rem 1fr auto;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  color: var(--c-body);
  text-decoration: none;
  font-size: 0.94rem;
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-faq .faq-index__link:hover {
  background: rgba(61, 224, 208, 0.08);
  color: var(--c-fog);
  transform: translateX(3px);
}

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

.page-faq .faq-index__n {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--c-dawn);
}

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

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--c-mute);
  font-variant-numeric: tabular-nums;
}

/* ---------- 右栏：连续答案区 ---------- */
.page-faq .faq-body {
  min-width: 0;
  display: grid;
  gap: clamp(36px, 6vw, 68px);
}

/* ---------- 框景首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 3vw, 30px);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 95% at 10% 0%, rgba(36, 28, 58, 0.92) 0%, rgba(6, 10, 18, 0) 62%),
    linear-gradient(180deg, rgba(255, 122, 47, 0.14) 0%, rgba(6, 10, 18, 0) 48%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: clamp(18px, 3vw, 30px);
  top: 0;
  bottom: 0;
  width: 1px;
  background: repeating-linear-gradient(to bottom, var(--c-line) 0 4px, transparent 4px 10px);
  opacity: 0.7;
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 22px;
}

@media (min-width: 760px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(150px, 210px) 1fr;
    align-items: start;
    gap: 28px;
  }
}

.page-faq .faq-hero__media {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--c-line);
}

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

.page-faq .faq-hero__list {
  min-width: 0;
  display: grid;
  gap: 6px;
  padding-left: clamp(12px, 2vw, 20px);
}

.page-faq .faq-hero__title {
  margin: 2px 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.3rem, 3vw, 1.85rem);
  letter-spacing: -0.01em;
  color: var(--c-fog);
}

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

.page-faq .faq-quick__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-quick__item:first-child {
  border-top: 0;
  padding-top: 4px;
}

.page-faq .faq-quick__n {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--c-pulse);
  padding-top: 0.3em;
}

.page-faq .faq-quick__q {
  margin: 0 0 5px;
  font-size: 0.99rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-fog);
}

.page-faq .faq-quick__a {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--c-body);
}

.page-faq .faq-quick__a a,
.page-faq .faq-item__a a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 224, 208, 0.35);
  transition: border-color 0.22s var(--ease), background-color 0.22s var(--ease);
}

.page-faq .faq-quick__a a:hover,
.page-faq .faq-item__a a:hover {
  border-bottom-color: var(--c-cyan);
  background: rgba(61, 224, 208, 0.1);
}

.page-faq .faq-quick__a a:focus-visible,
.page-faq .faq-item__a a:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

/* ---------- 分组 ---------- */
.page-faq .faq-block {
  scroll-margin-top: var(--faq-anchor-offset);
}

.page-faq .faq-block__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 14px;
  align-items: baseline;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-block__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--c-dawn);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-block__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 3.4vw, 2rem);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--c-fog);
}

.page-faq .faq-block__note {
  grid-column: 2;
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--c-mute);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--c-line);
  scroll-margin-top: var(--faq-anchor-offset);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: 2.2rem 1fr auto;
  gap: 10px;
  align-items: start;
  padding: 16px 8px 16px 0;
  cursor: pointer;
  list-style: none;
  color: var(--c-fog);
  font-size: 1rem;
  line-height: 1.6;
  border-radius: var(--radius-md);
  transition: color 0.22s var(--ease), background-color 0.22s var(--ease);
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary:hover {
  color: #ffffff;
  background: rgba(61, 224, 208, 0.05);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

.page-faq .faq-item__n {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--c-mute);
  padding-top: 0.36em;
  font-variant-numeric: tabular-nums;
}

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

.page-faq .faq-item__mark {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 0.42em;
  flex: none;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--c-cyan);
  border-radius: 2px;
  transition: transform 0.28s var(--ease), opacity 0.28s var(--ease), background-color 0.22s var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

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

.page-faq .faq-item > summary:hover .faq-item__mark::before,
.page-faq .faq-item > summary:hover .faq-item__mark::after {
  background: var(--c-pulse);
}

.page-faq .faq-item__a {
  padding: 0 8px 20px 0;
}

@media (min-width: 760px) {
  .page-faq .faq-item__a {
    padding-left: calc(2.2rem + 10px);
  }
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 64ch;
  font-size: 0.95rem;
  line-height: 1.82;
  color: var(--c-body);
}

.page-faq .faq-item:target > summary {
  background: linear-gradient(90deg, rgba(61, 224, 208, 0.16), rgba(61, 224, 208, 0));
  padding-left: 10px;
}

.page-faq .faq-item:target > summary .faq-item__n {
  color: var(--c-cyan);
}

.page-faq .faq-item:target > summary .faq-item__text {
  color: #ffffff;
}

/* ---------- 数字高亮 ---------- */
.page-faq .faq-key {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-block--help {
  padding-bottom: clamp(8px, 2vw, 20px);
}

.page-faq .faq-banner {
  margin: 28px 0 24px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-faq .faq-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 3;
  object-fit: cover;
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-actions .btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 480px) {
  .page-faq .faq-actions {
    flex-direction: column;
  }

  .page-faq .faq-actions .btn {
    width: 100%;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item > summary,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after {
    transition: none;
  }

  .page-faq .faq-index__link:hover {
    transform: none;
  }
}