.page-faq {
  --faq-accent: var(--l-blue);
}

/* ---------- 首屏 ---------- */
.page-faq .breadcrumb {
  margin: 18px 0 0;
}

.page-faq .faq-hero {
  padding: 8px 0 44px;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--l-yellow);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(30px, 6vw, 48px);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: -0.005em;
  color: var(--paper);
}

.page-faq .faq-hero h1::after {
  content: "";
  display: block;
  width: 72px;
  height: 3px;
  margin-top: 16px;
  background: linear-gradient(
    90deg,
    var(--l-blue) 0 38%,
    var(--l-yellow) 38% 68%,
    var(--l-green) 68% 100%
  );
}

.page-faq .faq-hero__lead {
  margin: 0 0 24px;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__meta-item {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 6px 12px;
  border: 1px solid var(--rule);
  background: var(--panel);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .faq-hero__meta-item .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  color: var(--l-yellow);
}

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

.page-faq .figure__media {
  overflow: hidden;
  border: 1px solid var(--rule);
  background: var(--terminal);
}

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

.page-faq .figure__cap {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 28px;
  padding-bottom: 76px;
}

/* ---------- 索引 ---------- */
.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__item {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--rule);
  background: var(--panel);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.2;
  white-space: nowrap;
  text-decoration: none;
  transition: color 160ms var(--ease), border-color 160ms var(--ease),
    background 160ms var(--ease);
}

.page-faq .faq-index__link:hover {
  color: var(--paper);
  border-color: var(--l-blue);
}

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

.page-faq .faq-index__dot {
  width: 7px;
  height: 7px;
  flex: 0 0 7px;
  background: var(--l-blue);
  transform: skewX(-14deg);
}

.page-faq .faq-index__item:nth-child(1) .faq-index__dot { background: var(--l-blue); }
.page-faq .faq-index__item:nth-child(2) .faq-index__dot { background: var(--l-yellow); }
.page-faq .faq-index__item:nth-child(3) .faq-index__dot { background: var(--l-green); }
.page-faq .faq-index__item:nth-child(4) .faq-index__dot { background: var(--paper); }
.page-faq .faq-index__item:nth-child(5) .faq-index__dot { background: var(--l-blue); }
.page-faq .faq-index__item:nth-child(6) .faq-index__dot { background: var(--red-bright); }

/* ---------- 分组 ---------- */
.page-faq .faq-group + .faq-group {
  margin-top: 48px;
}

.page-faq .faq-group {
  scroll-margin-top: 84px;
}

.page-faq .faq-group--season  { --faq-accent: var(--l-blue); }
.page-faq .faq-group--metric  { --faq-accent: var(--l-yellow); }
.page-faq .faq-group--archive { --faq-accent: var(--l-green); }
.page-faq .faq-group--plan    { --faq-accent: var(--paper); }
.page-faq .faq-group--client  { --faq-accent: var(--l-blue); }
.page-faq .faq-group--reach   { --faq-accent: var(--red-bright); }

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

.page-faq .faq-group__dot {
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  background: var(--faq-accent);
  transform: skewX(-14deg);
}

.page-faq .faq-group__idx {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--faq-accent);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-q {
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-q__btn {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 2px 15px 0;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  transition: color 160ms var(--ease);
}

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

.page-faq .faq-q__btn:hover {
  color: var(--l-yellow);
}

.page-faq .faq-q__btn:focus-visible {
  outline: 2px solid var(--l-blue);
  outline-offset: 2px;
}

.page-faq .faq-q__no {
  flex: 0 0 auto;
  min-width: 32px;
  padding: 2px 6px 2px 5px;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--faq-accent);
  background: var(--panel);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: 0.06em;
  color: var(--muted);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 16px;
  line-height: 1.6;
  font-weight: 500;
}

.page-faq .faq-q__chev {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 8px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(45deg);
  transition: transform 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .faq-q[open] .faq-q__chev {
  transform: rotate(-135deg);
  border-color: var(--l-green);
}

.page-faq .faq-q[open] .faq-q__no {
  color: var(--faq-accent);
  border-color: var(--faq-accent);
  border-left-color: var(--faq-accent);
}

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

.page-faq .faq-q[open] .faq-q__body {
  animation: faq-reveal 200ms var(--ease) both;
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-q__inner {
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-q__inner p {
  margin: 0;
}

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

.page-faq .faq-q__inner a {
  color: var(--l-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 数据口径配图 ---------- */
.page-faq .faq-figure {
  margin: 24px 0 0;
}

.page-faq .faq-figure .figure__media {
  background: var(--panel-raise);
}

/* ---------- 延伸阅读 ---------- */
.page-faq .faq-more {
  margin-top: 56px;
  padding: 22px 20px;
  border: 1px solid var(--rule);
  background: var(--panel-raise);
}

.page-faq .faq-more__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.3;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-more__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-more__list a {
  font-size: 14px;
  line-height: 1.6;
  color: var(--l-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 160ms var(--ease);
}

.page-faq .faq-more__list a:hover {
  border-bottom-color: var(--l-blue);
}

.page-faq .faq-more__list a:focus-visible {
  outline: 2px solid var(--l-blue);
  outline-offset: 2px;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-q__body {
    padding-left: 44px;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero {
    padding: 20px 0 60px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
    gap: 52px;
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr) 196px;
    grid-template-areas: "groups index";
    gap: 60px;
    align-items: start;
  }

  .page-faq .faq-groups {
    grid-area: groups;
  }

  .page-faq .faq-index {
    grid-area: index;
    position: sticky;
    top: 32px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
    border-left: 1px solid var(--rule);
  }

  .page-faq .faq-index__item {
    width: 100%;
  }

  .page-faq .faq-index__link {
    display: flex;
    width: 100%;
    padding: 9px 0 9px 14px;
    margin-left: -1px;
    border: 0;
    border-left: 2px solid transparent;
    background: none;
    white-space: normal;
  }

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

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

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q[open] .faq-q__body {
    animation: none;
  }

  .page-faq .faq-q__chev,
  .page-faq .faq-q__no,
  .page-faq .faq-q__btn,
  .page-faq .faq-index__link,
  .page-faq .faq-more__list a {
    transition: none;
  }
}