.page-faq {
  --faq-amber-deep: #A9681B;
  --faq-ink-soft: rgba(17, 26, 23, 0.68);
  --faq-card-shadow: rgba(7, 22, 19, 0.55);

  background: var(--ink);
  color: var(--porcelain);
  font-family: var(--font-body);
  padding-bottom: var(--stack-l);
  overflow-x: clip;
}

.page-faq__inner {
  padding-top: clamp(24px, 4vw, 48px);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 var(--stack-m);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--sage);
}

.page-faq .breadcrumb a {
  color: var(--porcelain);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
}

.page-faq .breadcrumb a:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-faq .breadcrumb__sep {
  color: var(--sage);
  opacity: 0.6;
}

/* ---------- 首屏 ---------- */
.faq-hero {
  display: grid;
  gap: var(--stack-m);
  padding-bottom: var(--stack-l);
  border-bottom: 1px solid var(--line);
}

.faq-hero .eyebrow {
  display: inline-block;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
}

.faq-hero h1 {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(38px, 7.4vw, 82px);
  line-height: 0.95;
  letter-spacing: -0.012em;
  color: var(--porcelain);
}

.faq-hero__lead {
  max-width: 46ch;
  margin: 0;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
  color: rgba(245, 241, 230, 0.8);
}

.faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 22px 40px;
  margin-top: 32px;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}

.faq-hero__meta div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.faq-hero__meta strong {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.faq-hero__meta span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--sage);
}

.page-faq .faq-hero__fig {
  margin: 0;
  position: relative;
}

.page-faq .faq-hero__fig::after {
  content: "";
  position: absolute;
  inset: 10px -8px -10px 10px;
  border: 1px solid var(--line);
  pointer-events: none;
  z-index: -1;
}

.page-faq .faq-hero__fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--black);
  background: var(--ink-deep);
}

.page-faq .figure-frame__caption {
  margin-top: 10px;
  font-family: var(--font-hand);
  font-style: italic;
  font-size: 13px;
  line-height: 1.6;
  color: var(--sage);
}

/* ---------- 问答板 ---------- */
.faq-wrap {
  padding-top: var(--stack-l);
}

.faq-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.faq-board {
  display: grid;
  gap: var(--stack-m);
}

/* ---------- 左侧分类轨道 ---------- */
.faq-rail__label {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sage);
}

.faq-tabs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.faq-tabs label {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 13px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid transparent;
  font-size: 13.5px;
  line-height: 1.4;
  color: rgba(245, 241, 230, 0.68);
  cursor: pointer;
  transition: color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease);
}

.faq-tabs label:hover {
  color: var(--porcelain);
  border-color: var(--line);
  background: rgba(245, 241, 230, 0.04);
}

.faq-tabs__idx {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.faq-rail__note {
  margin: 26px 0 0;
  font-family: var(--font-hand);
  font-style: italic;
  font-size: 13px;
  line-height: 1.7;
  color: var(--sage);
}

/* 当前选中标签 */
#faq-cat-all:checked ~ .faq-board .faq-tabs label[for="faq-cat-all"],
#faq-cat-entry:checked ~ .faq-board .faq-tabs label[for="faq-cat-entry"],
#faq-cat-round:checked ~ .faq-board .faq-tabs label[for="faq-cat-round"],
#faq-cat-layout:checked ~ .faq-board .faq-tabs label[for="faq-cat-layout"],
#faq-cat-focus:checked ~ .faq-board .faq-tabs label[for="faq-cat-focus"],
#faq-cat-version:checked ~ .faq-board .faq-tabs label[for="faq-cat-version"],
#faq-cat-contact:checked ~ .faq-board .faq-tabs label[for="faq-cat-contact"] {
  background: rgba(200, 244, 90, 0.1);
  border-left-color: var(--lime);
  color: var(--porcelain);
}

#faq-cat-all:checked ~ .faq-board .faq-tabs label[for="faq-cat-all"] .faq-tabs__idx,
#faq-cat-entry:checked ~ .faq-board .faq-tabs label[for="faq-cat-entry"] .faq-tabs__idx,
#faq-cat-round:checked ~ .faq-board .faq-tabs label[for="faq-cat-round"] .faq-tabs__idx,
#faq-cat-layout:checked ~ .faq-board .faq-tabs label[for="faq-cat-layout"] .faq-tabs__idx,
#faq-cat-focus:checked ~ .faq-board .faq-tabs label[for="faq-cat-focus"] .faq-tabs__idx,
#faq-cat-version:checked ~ .faq-board .faq-tabs label[for="faq-cat-version"] .faq-tabs__idx,
#faq-cat-contact:checked ~ .faq-board .faq-tabs label[for="faq-cat-contact"] .faq-tabs__idx {
  color: var(--lime);
}

/* 前端分类筛选 */
#faq-cat-entry:checked ~ .faq-board .faq-group,
#faq-cat-round:checked ~ .faq-board .faq-group,
#faq-cat-layout:checked ~ .faq-board .faq-group,
#faq-cat-focus:checked ~ .faq-board .faq-group,
#faq-cat-version:checked ~ .faq-board .faq-group,
#faq-cat-contact:checked ~ .faq-board .faq-group {
  display: none;
}

#faq-cat-entry:checked ~ .faq-board .faq-group[data-cat="entry"],
#faq-cat-round:checked ~ .faq-board .faq-group[data-cat="round"],
#faq-cat-layout:checked ~ .faq-board .faq-group[data-cat="layout"],
#faq-cat-focus:checked ~ .faq-board .faq-group[data-cat="focus"],
#faq-cat-version:checked ~ .faq-board .faq-group[data-cat="version"],
#faq-cat-contact:checked ~ .faq-board .faq-group[data-cat="contact"] {
  display: block;
}

/* ---------- 右侧问题组 ---------- */
.faq-main {
  min-width: 0;
}

.faq-group {
  margin-bottom: var(--stack-l);
}

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

.faq-group__title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--porcelain);
}

.faq-group__idx {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.play-faq-note,
.faq-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.94em;
  color: var(--faq-amber-deep);
}

/* ---------- 手风琴卡片 ---------- */
.faq-item {
  background: var(--paper);
  color: var(--ink-deep);
  border: 1px solid rgba(17, 26, 23, 0.4);
  box-shadow: 2px 3px 0 var(--faq-card-shadow);
  margin-bottom: 10px;
  transition: transform var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease);
}

.faq-item:hover {
  transform: translate(-1px, -2px);
  box-shadow: 3px 5px 0 var(--faq-card-shadow);
}

.faq-item[open] {
  box-shadow: 3px 5px 0 var(--faq-card-shadow);
}

.faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink-deep);
}

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

.faq-item__q::before {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.35;
  color: var(--faq-amber-deep);
  transition: transform var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease);
}

.faq-item[open] .faq-item__q::before {
  content: "−";
  color: var(--black);
}

.faq-item__q:focus-visible {
  outline: 2px solid var(--ink-deep);
  outline-offset: -3px;
}

.faq-item__a {
  padding: 0 18px 18px 47px;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--faq-ink-soft);
}

.faq-item__a p {
  margin: 0 0 10px;
}

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

.faq-item__a strong {
  color: var(--ink-deep);
  font-weight: 600;
}

.faq-item__a a {
  color: var(--ink-deep);
  text-decoration: underline;
  text-decoration-color: var(--faq-amber-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.faq-item__a a:hover {
  text-decoration-color: var(--ink-deep);
  background: var(--lime-soft);
}

.faq-item__a mark {
  background: linear-gradient(
    to top,
    transparent 40%,
    var(--lime-soft) 40%,
    var(--lime-soft) 92%,
    transparent 92%
  );
  color: var(--ink-deep);
  padding: 0 2px;
}

/* ---------- 重点场次配图 ---------- */
.page-faq .faq-focus-fig {
  margin: 0 0 20px;
  background: var(--ink-deep);
  border: 1px solid var(--line);
  padding: 8px;
}

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

.page-faq .faq-focus-fig .figure-frame__caption {
  padding: 8px 2px 2px;
  margin-top: 0;
}

/* ---------- 底部引导 ---------- */
.faq-cta {
  display: grid;
  gap: 24px;
  margin-top: var(--stack-l);
  padding: clamp(24px, 4vw, 44px);
  background: var(--ink-deep);
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
}

.faq-cta .eyebrow {
  display: block;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
}

.faq-cta h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.06;
  color: var(--porcelain);
}

.faq-cta p {
  margin: 0;
  max-width: 52ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(245, 241, 230, 0.72);
}

.faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

/* ---------- 中等宽度 ---------- */
@media (min-width: 720px) {
  .faq-board {
    grid-template-columns: minmax(0, 1fr);
  }

  .faq-tabs {
    gap: 8px;
  }

  .faq-item__q {
    font-size: 15.5px;
    padding: 18px 22px;
  }

  .faq-item__a {
    padding: 0 22px 20px 51px;
    font-size: 15px;
  }

  .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }
}

/* ---------- 桌面 3:9 问答布局 ---------- */
@media (min-width: 960px) {
  .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
    gap: var(--stack-l);
  }

  .faq-board {
    grid-template-columns: minmax(180px, 232px) minmax(0, 1fr);
    gap: var(--stack-l);
    align-items: start;
  }

  .faq-rail {
    position: sticky;
    top: 32px;
  }

  .faq-tabs {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 5px;
  }

  .faq-tabs label {
    width: 100%;
    padding: 11px 13px;
  }

  .faq-hero__fig {
    align-self: stretch;
  }
}

/* ---------- 大屏 ---------- */
@media (min-width: 1200px) {
  .faq-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .faq-board {
    grid-template-columns: minmax(200px, 256px) minmax(0, 1fr);
  }

  .faq-item__q {
    font-size: 16px;
  }

  .faq-item__a {
    font-size: 15.5px;
    padding-bottom: 22px;
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .faq-item:hover {
    transform: none;
  }
}