.page-faq {
  --faq-panel: var(--panel);
  --faq-rule: rgba(46, 82, 69, 0.7);
  display: block;
  overflow-x: clip;
  background-color: var(--deep);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  padding-bottom: calc(var(--dock-h) + 56px);
}

@media (min-width: 720px) {
  .page-faq {
    font-size: 16px;
  }
}

.page-faq a {
  color: var(--gold-hi);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 75, 0.35);
  transition: color 160ms ease, border-color 160ms ease;
}

.page-faq a:hover,
.page-faq a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-faq .num {
  font-family: var(--font-mono);
  font-size: 0.95em;
  letter-spacing: 0.06em;
  color: var(--gold);
}

/* ── 首屏 ───────────────────────────────── */

.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding: 28px 0 40px;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(27px, 7vw, 46px);
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--paper);
  text-shadow: 0 0 26px rgba(201, 162, 75, 0.18);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 54ch;
  color: var(--jade);
  line-height: 1.8;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  margin: 22px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--faq-rule);
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--jade);
}

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

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--faq-rule);
  clip-path: polygon(0 0, 100% 0, 100% 86%, 87% 100%, 0 100%);
  filter: saturate(0.85) brightness(0.92);
}

.page-faq .faq-hero__media figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--jade);
  line-height: 1.6;
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: end;
    padding: 56px 0 60px;
  }
}

/* ── 布局：内容 + 右侧主题索引 ───────────── */

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-top: 32px;
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 196px;
    gap: 56px;
    padding-top: 40px;
  }
  .page-faq .faq-index {
    order: 1;
  }
}

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

/* ── 主题索引条 ─────────────────────────── */

.page-faq .faq-index {
  order: 0;
  padding: 12px 0;
  border-top: 1px solid var(--faq-rule);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-index__title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--jade);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 14px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-index__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  white-space: nowrap;
  font-size: 13px;
  color: var(--jade);
  border-bottom: none;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--gold-hi);
}

@media (min-width: 1024px) {
  .page-faq .faq-index {
    position: sticky;
    top: calc(48px + 24px);
    align-self: start;
    border-top: none;
    border-bottom: none;
    border-left: 1px solid var(--faq-rule);
    padding: 2px 0 2px 20px;
  }
  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 10px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-index__list a {
    white-space: normal;
    line-height: 1.5;
  }
}

/* ── 筛选条 ─────────────────────────────── */

.page-faq .faq-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 18px;
  padding: 0 0 20px;
}

.page-faq .filter-bar {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: none;
}

.page-faq .filter-bar::-webkit-scrollbar {
  display: none;
}

.page-faq .filter-chip {
  flex: 0 0 auto;
  padding: 6px 13px;
  border: 1px solid var(--faq-rule);
  border-radius: var(--radius);
  background: transparent;
  color: var(--jade);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.4;
  cursor: pointer;
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.page-faq .filter-chip:hover,
.page-faq .filter-chip:focus-visible {
  color: var(--gold-hi);
  border-color: var(--gold);
}

.page-faq .filter-chip[aria-pressed="true"],
.page-faq .filter-chip.is-active {
  color: var(--gold);
  border-color: var(--gold);
  background-color: rgba(201, 162, 75, 0.09);
}

.page-faq .faq-tools__count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--jade);
}

.page-faq .filter-count {
  color: var(--gold);
}

@media (min-width: 720px) {
  .page-faq .filter-bar {
    flex-wrap: wrap;
    overflow: visible;
  }
}

/* ── 分组 ───────────────────────────────── */

.page-faq .faq-group {
  padding: 34px 0 10px;
  border-top: 1px solid var(--faq-rule);
  scroll-margin-top: calc(48px + 20px);
}

.page-faq .faq-group:first-child {
  border-top: none;
  padding-top: 4px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 3px;
  align-items: baseline;
  margin-bottom: 16px;
}

.page-faq .faq-group__num {
  grid-row: 1 / span 2;
  align-self: start;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(24px, 6vw, 34px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--gold);
  text-shadow: 0 0 20px rgba(201, 162, 75, 0.28);
}

.page-faq .faq-group__title {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--jade);
}

/* ── 问答条目 ───────────────────────────── */

.page-faq .faq-list {
  display: flex;
  flex-direction: column;
}

.page-faq .faq-item {
  border-left: 2px solid var(--faq-rule);
  border-bottom: 1px solid var(--faq-rule);
  padding-left: 15px;
  transition: border-color 200ms ease;
}

.page-faq .faq-item[open] {
  border-left-color: var(--gold);
}

.page-faq .faq-item:hover {
  border-left-color: var(--gold-hi);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: baseline;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q:focus-visible {
  outline: 1px solid var(--gold);
  outline-offset: 3px;
}

.page-faq .faq-q__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gold);
  white-space: nowrap;
}

.page-faq .faq-q__text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-item[open] .faq-q__text {
  color: var(--gold-hi);
}

.page-faq .faq-q__mark {
  position: relative;
  width: 13px;
  height: 13px;
  align-self: center;
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  background-color: var(--jade);
  transition: transform 200ms ease, background-color 200ms ease;
}

.page-faq .faq-q__mark::before {
  left: 0;
  top: 6px;
  width: 13px;
  height: 1px;
}

.page-faq .faq-q__mark::after {
  left: 6px;
  top: 0;
  width: 1px;
  height: 13px;
}

.page-faq .faq-item[open] .faq-q__mark::before {
  background-color: var(--gold);
}

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

@media (min-width: 720px) {
  .page-faq .faq-q__text {
    font-size: 18px;
  }
}

.page-faq .faq-a {
  margin: 0 -6px 20px -17px;
  padding: 15px 18px 16px 17px;
  background-color: var(--faq-panel);
  border-left: 2px solid var(--gold);
}

.page-faq .faq-a p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--jade);
}

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

.page-faq .faq-a .num {
  color: var(--gold-hi);
}

@media (min-width: 720px) {
  .page-faq .faq-a p {
    font-size: 15px;
  }
}

/* ── 区间示意图 ─────────────────────────── */

.page-faq .faq-figure {
  margin: 22px 0 34px;
  border: 1px solid var(--faq-rule);
  background-color: var(--faq-panel);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.9) brightness(0.93);
}

.page-faq .faq-figure figcaption {
  padding: 10px 16px;
  border-top: 1px solid var(--faq-rule);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--jade);
}

/* ── 继续查阅 ───────────────────────────── */

.page-faq .faq-next {
  margin-top: 52px;
  padding-top: 32px;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-next__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-next__lede {
  margin: 12px 0 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--jade);
}

.page-faq .faq-next__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  background-color: var(--faq-rule);
  border: 1px solid var(--faq-rule);
}

.page-faq .faq-next__list li {
  background-color: var(--faq-panel);
}

.page-faq .faq-next__list a {
  display: block;
  padding: 15px 18px;
  border-bottom: none;
}

.page-faq .faq-next__list a:hover,
.page-faq .faq-next__list a:focus-visible {
  background-color: var(--lift);
}

.page-faq .faq-next__t {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  color: var(--paper);
}

.page-faq .faq-next__d {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--jade);
}

@media (min-width: 720px) {
  .page-faq .faq-next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .faq-next__t {
    font-size: 16px;
  }
}

/* ── 动效降级 ───────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  .page-faq .filter-chip,
  .page-faq .faq-item,
  .page-faq .faq-q__mark::before,
  .page-faq .faq-q__mark::after,
  .page-faq a {
    transition: none;
  }
}