.page-faq {
  --faq-line-strong: #1E4A66;
  --faq-glow: rgba(255, 122, 41, 0.16);
  --faq-cool: rgba(53, 224, 214, 0.12);
}

/* ---------- 面包屑顶条 ---------- */
.page-faq .faq-top {
  padding: 18px 0 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-lead {
  position: relative;
  overflow: hidden;
  padding: 32px 0 44px;
  background:
    radial-gradient(120% 90% at 88% -10%, var(--faq-glow), transparent 62%),
    radial-gradient(90% 80% at 2% 110%, var(--faq-cool), transparent 64%),
    var(--bg-channel);
  border-bottom: 2px solid var(--faq-line-strong);
}

.page-faq .faq-lead::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    180deg,
    rgba(230, 238, 244, 0.05) 0 1px,
    transparent 1px 4px
  );
  opacity: 0.5;
}

.page-faq .faq-lead__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-faq .faq-lead h1 {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 6vw, 44px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 20ch;
}

.page-faq .faq-lead__main .lede {
  max-width: 46ch;
  color: var(--ink-dim);
}

.page-faq .faq-lead__status {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  padding: 10px 14px;
  border: 2px solid var(--faq-line-strong);
  background: var(--bg-grid);
  color: var(--ink);
  font-size: var(--fs-2);
}

.page-faq .faq-meta {
  margin: 0;
  border: 2px solid var(--faq-line-strong);
  background: var(--bg-channel);
}

.page-faq .faq-meta__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 14px;
}

.page-faq .faq-meta__row + .faq-meta__row {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-meta__row dt {
  color: var(--ink-dim);
  font-size: var(--fs-2);
}

.page-faq .faq-meta__row dd {
  margin: 0;
  color: var(--cyan);
  font-size: var(--fs-2);
}

/* ---------- 分类图示 ---------- */
.page-faq .faq-nav {
  padding: 44px 0 8px;
}

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

.page-faq .faq-nav__figure .figure__frame,
.page-faq .faq-cat__figure .figure__frame {
  overflow: hidden;
  border: 2px solid var(--faq-line-strong);
  background: var(--bg-grid);
  box-shadow: var(--shadow-hard);
}

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

.page-faq .figure__cap {
  display: block;
  margin-top: 12px;
  color: var(--ink-dim);
  font-size: var(--fs-1);
  letter-spacing: 0.02em;
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding: 44px 0 56px;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: start;
}

.page-faq .faq-side__title {
  margin: 0 0 14px;
  color: var(--orange);
  font-size: var(--fs-1);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-faq .faq-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-index__item {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 12px 14px 12px 18px;
  border: 2px solid var(--line-soft);
  background: var(--bg-channel);
  color: var(--ink);
  text-decoration: none;
  font-size: var(--fs-2);
  transition: border-color 160ms ease, background-color 160ms ease, transform 160ms ease;
}

.page-faq .faq-index__item::before {
  content: "";
  position: absolute;
  left: -2px;
  top: 50%;
  width: 2px;
  height: 0;
  background: var(--orange);
  transform: translateY(-50%);
  transition: height 200ms ease;
}

.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  border-color: var(--orange);
  background: var(--bg-grid);
  outline: none;
}

.page-faq .faq-index__item:hover::before,
.page-faq .faq-index__item:focus-visible::before {
  height: 64%;
}

.page-faq .faq-index__num {
  color: var(--cyan);
  font-size: var(--fs-1);
}

.page-faq .faq-index__label {
  font-weight: 700;
}

.page-faq .faq-index__count {
  color: var(--ink-dim);
  font-size: var(--fs-1);
  text-align: right;
}

.page-faq:has(#cat-01:target) .faq-index__item[href="#cat-01"],
.page-faq:has(#cat-02:target) .faq-index__item[href="#cat-02"],
.page-faq:has(#cat-03:target) .faq-index__item[href="#cat-03"],
.page-faq:has(#cat-04:target) .faq-index__item[href="#cat-04"],
.page-faq:has(#cat-05:target) .faq-index__item[href="#cat-05"] {
  border-color: var(--orange);
  background: var(--bg-grid);
  color: var(--ink);
}

.page-faq:has(#cat-01:target) .faq-index__item[href="#cat-01"]::before,
.page-faq:has(#cat-02:target) .faq-index__item[href="#cat-02"]::before,
.page-faq:has(#cat-03:target) .faq-index__item[href="#cat-03"]::before,
.page-faq:has(#cat-04:target) .faq-index__item[href="#cat-04"]::before,
.page-faq:has(#cat-05:target) .faq-index__item[href="#cat-05"]::before {
  height: 64%;
}

/* ---------- 分类区块 ---------- */
.page-faq .faq-panel {
  min-width: 0;
}

.page-faq .faq-cat {
  scroll-margin-top: 108px;
  padding-top: 8px;
}

.page-faq .faq-cat + .faq-cat {
  margin-top: 52px;
  padding-top: 40px;
  border-top: 2px solid var(--faq-line-strong);
}

.page-faq .faq-cat__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line-soft);
}

.page-faq .faq-cat__num {
  color: var(--orange);
  font-size: var(--fs-2);
}

.page-faq .faq-cat__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.6vw, 30px);
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-cat__count {
  margin-left: auto;
  color: var(--ink-dim);
  font-size: var(--fs-1);
}

.page-faq .faq-cat__intro {
  margin: 14px 0 20px;
  max-width: 58ch;
  color: var(--ink-dim);
  font-size: var(--fs-2);
  line-height: 1.7;
}

.page-faq .faq-cat__figure {
  margin: 0 0 22px;
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  border: 2px solid var(--faq-line-strong);
  background: var(--bg-channel);
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

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

.page-faq .qa[open] {
  border-color: var(--orange);
  box-shadow: var(--shadow-soft);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--ink);
  font-size: var(--fs-3);
  font-weight: 700;
  line-height: 1.5;
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q:hover .qa__text {
  color: var(--orange-soft);
}

.page-faq .qa__num {
  flex: none;
  color: var(--cyan);
  font-size: var(--fs-2);
  line-height: 1.7;
}

.page-faq .qa__text {
  flex: 1 1 auto;
  min-width: 0;
  transition: color 160ms ease;
}

.page-faq .qa__mark {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 180ms ease, opacity 180ms ease;
}

.page-faq .qa__mark::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .qa__mark::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__body {
  padding: 0 16px 16px 46px;
  border-top: 1px solid var(--line-soft);
  padding-top: 14px;
}

.page-faq .qa__body p {
  margin: 0;
  max-width: 60ch;
  color: var(--ink-dim);
  font-size: var(--fs-2);
  line-height: 1.75;
}

.page-faq .qa__tag {
  margin-top: 12px;
  color: var(--orange-soft);
  font-size: var(--fs-1);
  letter-spacing: 0.04em;
}

@keyframes faq-open-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .qa[open] .qa__body {
  animation: faq-open-in 180ms ease-out both;
}

/* ---------- 底部去向 ---------- */
.page-faq .faq-next {
  padding: 0 0 72px;
}

.page-faq .faq-next__box {
  display: grid;
  gap: 24px;
  padding: 28px 24px;
  border: 2px solid var(--faq-line-strong);
  background:
    linear-gradient(120deg, rgba(255, 122, 41, 0.09), transparent 58%),
    var(--bg-channel);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-next__copy h2 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.6vw, 30px);
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-next__copy p {
  margin: 0;
  max-width: 52ch;
  color: var(--ink-dim);
  font-size: var(--fs-2);
  line-height: 1.75;
}

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

/* ---------- 中等以上屏幕 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-lead {
    padding: 44px 0 60px;
  }

  .page-faq .faq-lead__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(260px, 0.85fr);
    gap: 40px;
    align-items: start;
  }

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

@media (min-width: 1000px) {
  .page-faq .faq-nav {
    padding-top: 56px;
  }

  .page-faq .faq-body {
    padding: 56px 0 64px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 268px minmax(0, 1fr);
    gap: 48px;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 92px;
  }

  .page-faq .qa__q {
    padding: 17px 18px;
  }

  .page-faq .qa__body {
    padding: 16px 18px 18px 48px;
  }
}

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

  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .faq-index__item,
  .page-faq .faq-index__item::before,
  .page-faq .qa__text {
    transition: none;
  }
}