.page-faq {
  --faq-rail-w: 236px;
  --faq-edge: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-intro {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding: 36px 0 44px;
}

.page-faq .faq-intro::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(245, 242, 234, .045) 0 1px,
    transparent 1px 88px
  );
}

.page-faq .faq-intro__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-faq .faq-intro .eyebrow {
  margin: 0 0 12px;
  color: var(--sprout);
}

.page-faq .faq-intro .display-title {
  margin: 0 0 16px;
  color: var(--paper);
  letter-spacing: -.02em;
  max-width: 18ch;
}

.page-faq .faq-intro .lede {
  margin: 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(245, 242, 234, .78);
}

.page-faq .faq-intro__meta {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  border-top: 1px solid rgba(245, 242, 234, .16);
  padding-top: 18px;
}

.page-faq .faq-intro .annotation--rotated {
  flex: 0 0 auto;
  color: var(--sprout);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.page-faq .faq-intro__quick {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.page-faq .faq-intro__quick li {
  display: flex;
  align-items: baseline;
  gap: 7px;
  font-size: 13px;
  color: rgba(245, 242, 234, .7);
}

.page-faq .faq-intro__quick .figure {
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

/* ---------- 主栅格 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 30px 0 76px;
}

/* ---------- 左侧分类索引 ---------- */
.page-faq .faq-index {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 0 14px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--faq-edge);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-index__title {
  display: none;
  margin: 0;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--slate);
}

.page-faq .faq-index__link {
  flex: 0 0 auto;
  padding: 7px 14px;
  border: 1px solid var(--faq-edge);
  border-radius: 999px;
  background: var(--paper-2);
  font-size: 13px;
  color: var(--sea);
  text-decoration: none;
  white-space: nowrap;
  transition:
    border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover {
  border-color: var(--tide);
  color: var(--tide);
}

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

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  margin: 0 0 56px;
  scroll-margin-top: 96px;
}

.page-faq .faq-group:last-child {
  margin-bottom: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-edge);
  margin-bottom: 2px;
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--pitch);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: 21px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--sea);
  letter-spacing: -.01em;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-edge);
}

.page-faq .faq-item > summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 17px 38px 17px 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--sea);
  transition: color var(--dur) 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: var(--tide);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.page-faq .faq-item > summary::after {
  content: "";
  position: absolute;
  right: 12px;
  top: 50%;
  width: 9px;
  height: 9px;
  margin-top: -6px;
  border-right: 2px solid var(--pitch);
  border-bottom: 2px solid var(--pitch);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-item[open] > summary::after {
  transform: rotate(-135deg);
}

.page-faq .faq-item__body {
  padding: 0 8px 18px 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

.page-faq .faq-item__body p {
  margin: 0 0 8px;
}

.page-faq .faq-item__body p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item[open] > .faq-item__body {
  animation: faq-reveal var(--dur) var(--ease) both;
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 三档天数标签 ---------- */
.page-faq .day-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 10px;
  margin: 22px 0 24px;
}

.page-faq .day-tag {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 9px 13px;
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius);
  background: var(--paper-2);
  box-shadow: var(--shadow);
  transition:
    transform var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-faq .day-tag__num {
  font-size: 13px;
  color: var(--slate);
  font-variant-numeric: tabular-nums;
}

.page-faq .day-tag__num strong {
  font-size: 21px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--sea);
  font-variant-numeric: tabular-nums;
  margin-right: 2px;
}

.page-faq .day-tag__scene {
  font-size: 12px;
  line-height: 1.5;
  color: var(--slate);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition:
    max-height var(--dur) var(--ease),
    opacity var(--dur) var(--ease);
}

.page-faq .day-tag:nth-child(2) {
  padding: 13px 17px;
}

.page-faq .day-tag:nth-child(2) .day-tag__num strong {
  font-size: 26px;
}

.page-faq .day-tag:nth-child(3) {
  padding: 17px 21px;
  border-color: var(--sprout);
}

.page-faq .day-tag:nth-child(3) .day-tag__num strong {
  font-size: 32px;
  color: var(--pitch);
}

.page-faq .day-tag:hover,
.page-faq .day-tag:focus-within {
  transform: translateY(-2px);
  border-color: var(--tide);
  box-shadow: var(--shadow-lift);
}

.page-faq .day-tag:hover .day-tag__scene,
.page-faq .day-tag:focus-within .day-tag__scene {
  max-height: 44px;
  opacity: 1;
}

/* ---------- 图文块 ---------- */
.page-faq .faq-media {
  margin: 0;
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--sea);
  box-shadow: var(--shadow);
}

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

.page-faq .faq-media figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--faq-edge);
  background: var(--paper-2);
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
}

/* ---------- 分组尾部的路径提示 ---------- */
.page-faq .faq-next {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin: 18px 0 0;
  font-size: 14px;
  color: var(--slate);
}

.page-faq .faq-route {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 18px;
  margin-top: 20px;
  padding: 16px 18px;
  border: 1px solid var(--faq-edge);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius);
  background: var(--paper-2);
}

.page-faq .faq-route p {
  margin: 0;
  max-width: 44ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--sea);
}

/* ---------- 联系面板 ---------- */
.page-faq .faq-support {
  margin-top: 24px;
  padding: 24px 20px;
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--paper);
  box-shadow: var(--shadow);
}

.page-faq .faq-support .annotation {
  margin: 0 0 10px;
  color: var(--sprout);
}

.page-faq .faq-support__lead {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 242, 234, .8);
}

.page-faq .faq-support__list {
  margin: 0 0 20px;
  padding: 0;
}

.page-faq .faq-support__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
  padding-top: 10px;
  border-top: 1px solid rgba(245, 242, 234, .14);
}

.page-faq .faq-support__row + .faq-support__row {
  margin-top: 10px;
}

.page-faq .faq-support__row dt {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--sprout);
}

.page-faq .faq-support__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
  word-break: break-word;
  overflow-wrap: anywhere;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-intro {
    padding: 44px 0 56px;
  }

  .page-faq .faq-intro .lede {
    font-size: 17px;
  }

  .page-faq .faq-group__title {
    font-size: 24px;
  }

  .page-faq .faq-item > summary {
    font-size: 17px;
    padding: 19px 44px 19px 0;
  }

  .page-faq .faq-item__body {
    padding: 0 56px 20px 0;
  }

  .page-faq .faq-support {
    padding: 28px 26px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-intro {
    padding: 56px 0 68px;
  }

  .page-faq .faq-intro__grid {
    grid-template-columns: minmax(0, 1fr) 196px;
    gap: 56px;
    align-items: end;
  }

  .page-faq .faq-intro__meta {
    flex-direction: column;
    gap: 14px;
    padding-top: 0;
  }

  .page-faq .faq-intro__quick {
    flex-direction: column;
    gap: 12px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    padding: 48px 0 104px;
  }

  .page-faq .faq-index {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    position: sticky;
    top: 88px;
    margin-bottom: 0;
    padding: 0;
    border-bottom: 0;
  }

  .page-faq .faq-index__title {
    display: block;
    margin: 0 0 14px;
    padding-left: 14px;
  }

  .page-faq .faq-index__link {
    border: 0;
    border-left: 2px solid var(--faq-edge);
    border-radius: 0;
    background: none;
    padding: 10px 8px 10px 14px;
    font-size: 14px;
    line-height: 1.5;
    white-space: normal;
    text-align: left;
  }

  .page-faq .faq-index__link:hover {
    border-left-color: var(--tide);
    background: none;
  }

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

  .page-faq .faq-group {
    margin-bottom: 80px;
  }

  .page-faq .faq-group__title {
    font-size: 28px;
  }

  .page-faq .day-tags {
    gap: 14px;
    margin: 26px 0 28px;
  }

  .page-faq .faq-route {
    padding: 20px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] > .faq-item__body {
    animation: none;
  }

  .page-faq .day-tag,
  .page-faq .day-tag__scene,
  .page-faq .faq-item > summary,
  .page-faq .faq-item > summary::after,
  .page-faq .faq-index__link {
    transition: none;
  }
}