.page-faq {
  --faq-row: rgba(30, 91, 84, 0.45);
  --faq-row-open: rgba(18, 64, 58, 0.62);
  --faq-tint: rgba(30, 91, 84, 0.08);
  background: var(--night);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--night);
  color: var(--bone);
  border-bottom: 1px solid var(--ink-line);
}

.page-faq .faq-hero__media {
  position: absolute;
  inset: 0;
}

.page-faq .faq-hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
  filter: saturate(0.72) contrast(1.04);
  display: block;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -18% -8%;
  z-index: 1;
  pointer-events: none;
  background: repeating-linear-gradient(98deg, transparent 0 46px, rgba(95, 208, 232, 0.07) 46px 47px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(11, 20, 22, 0.5) 0%, rgba(11, 20, 22, 0.9) 64%, var(--night) 100%);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 2;
  padding: clamp(40px, 7vw, 96px) 0 clamp(36px, 5vw, 68px);
}

.page-faq .faq-hero .breadcrumb__link,
.page-faq .faq-hero .breadcrumb__item {
  color: var(--muted-on-dark);
}

.page-faq .faq-hero .breadcrumb__link:hover {
  color: var(--ice);
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(36px, 6vw, 82px);
  line-height: 1.06;
  letter-spacing: 0.01em;
  margin: 16px 0 0;
  max-width: 18em;
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 46em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--bone-dim);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ink-line);
  border: 1px solid var(--ink-line);
}

.page-faq .faq-hero__fact {
  background: rgba(11, 20, 22, 0.78);
  padding: 14px 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-hero__factNum {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 28px;
  line-height: 1;
  color: var(--score);
}

.page-faq .faq-hero__factUnit {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ice);
}

.page-faq .faq-hero__factLabel {
  flex: 1 1 100%;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--muted-on-dark);
}

/* ---------- 章节标题统一 ---------- */
.page-faq .section-head__num {
  color: var(--clay);
}

.page-faq .faq-bank .section-head__title {
  color: var(--bone);
}

.page-faq .faq-bank .section-head__desc,
.page-faq .faq-next .section-head__desc {
  color: var(--muted-on-dark);
}

.page-faq .faq-next .section-head__title {
  color: var(--bone);
}

/* ---------- 问题地图 ---------- */
.page-faq .faq-map__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
  align-items: start;
  margin-top: clamp(24px, 3vw, 40px);
}

.page-faq .faq-map__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--hairline);
}

.page-faq .faq-map__item {
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-map__link {
  position: relative;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  grid-template-areas:
    "code name count"
    "code note count";
  column-gap: 14px;
  row-gap: 4px;
  padding: 16px 14px 16px 12px;
  text-decoration: none;
  color: var(--grass-deep);
  transition: background 0.16s var(--ease), color 0.16s var(--ease);
}

.page-faq .faq-map__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--score);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.16s var(--ease);
}

.page-faq .faq-map__link:hover,
.page-faq .faq-map__link:focus-visible {
  background: var(--faq-tint);
}

.page-faq .faq-map__link:hover::before,
.page-faq .faq-map__link:focus-visible::before {
  transform: scaleY(1);
}

.page-faq .faq-map__code {
  grid-area: code;
  align-self: start;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-top: 2px;
  border: 1px solid var(--grass-deep);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--clay);
}

.page-faq .faq-map__name {
  grid-area: name;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.35;
}

.page-faq .faq-map__note {
  grid-area: note;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted-on-light);
}

.page-faq .faq-map__count {
  grid-area: count;
  align-self: center;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--moss);
}

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

.page-faq .faq-map__figure .figure__frame {
  aspect-ratio: 5 / 6;
  border: 1px solid var(--hairline);
  overflow: hidden;
}

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

.page-faq .faq-map__figure .figure__caption {
  color: var(--muted-on-light);
}

/* ---------- 筛选标签 ---------- */
.page-faq .faq-filter {
  margin-top: clamp(20px, 3vw, 34px);
}

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

.page-faq .faq-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-faq .faq-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--ink-line);
  color: var(--muted-on-dark);
  font-size: 13px;
  letter-spacing: 0.06em;
  cursor: pointer;
  user-select: none;
  transition: border-color 0.16s var(--ease), color 0.16s var(--ease), background 0.16s var(--ease);
}

.page-faq .faq-tab:hover {
  border-color: var(--score);
  color: var(--bone);
}

.page-faq .faq-tab__n {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  color: var(--ice);
}

.page-faq #faq-cat-all:checked ~ .faq-tabs .faq-tab[for="faq-cat-all"],
.page-faq #faq-cat-a:checked ~ .faq-tabs .faq-tab[for="faq-cat-a"],
.page-faq #faq-cat-b:checked ~ .faq-tabs .faq-tab[for="faq-cat-b"],
.page-faq #faq-cat-c:checked ~ .faq-tabs .faq-tab[for="faq-cat-c"],
.page-faq #faq-cat-d:checked ~ .faq-tabs .faq-tab[for="faq-cat-d"],
.page-faq #faq-cat-e:checked ~ .faq-tabs .faq-tab[for="faq-cat-e"] {
  background: var(--grass-deep);
  border-color: var(--ice);
  color: var(--bone);
}

.page-faq #faq-cat-all:focus-visible ~ .faq-tabs .faq-tab[for="faq-cat-all"],
.page-faq #faq-cat-a:focus-visible ~ .faq-tabs .faq-tab[for="faq-cat-a"],
.page-faq #faq-cat-b:focus-visible ~ .faq-tabs .faq-tab[for="faq-cat-b"],
.page-faq #faq-cat-c:focus-visible ~ .faq-tabs .faq-tab[for="faq-cat-c"],
.page-faq #faq-cat-d:focus-visible ~ .faq-tabs .faq-tab[for="faq-cat-d"],
.page-faq #faq-cat-e:focus-visible ~ .faq-tabs .faq-tab[for="faq-cat-e"] {
  outline: 2px solid var(--ice);
  outline-offset: 2px;
}

.page-faq .faq-filter:has(#faq-cat-a:checked) .faq-group:not([data-cat="a"]),
.page-faq .faq-filter:has(#faq-cat-b:checked) .faq-group:not([data-cat="b"]),
.page-faq .faq-filter:has(#faq-cat-c:checked) .faq-group:not([data-cat="c"]),
.page-faq .faq-filter:has(#faq-cat-d:checked) .faq-group:not([data-cat="d"]),
.page-faq .faq-filter:has(#faq-cat-e:checked) .faq-group:not([data-cat="e"]) {
  display: none;
}

/* ---------- 问答组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(30px, 4vw, 52px);
  scroll-margin-top: 110px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-group__code {
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--clay);
}

.page-faq .faq-group__title {
  flex: 1 1 auto;
  margin: 0;
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 600;
  line-height: 1.3;
  color: var(--bone);
}

.page-faq .faq-group__meta {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted-on-dark);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--ink-line);
  transition: background 0.16s var(--ease);
}

.page-faq .qa:hover {
  background: var(--faq-row);
}

.page-faq .qa[open] {
  background: var(--faq-row-open);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) auto 16px;
  align-items: baseline;
  gap: 12px;
  padding: 14px 12px;
  cursor: pointer;
  list-style: none;
  color: var(--bone);
}

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

.page-faq .qa__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--ice);
}

.page-faq .qa__text {
  font-size: 15.5px;
  line-height: 1.6;
}

.page-faq .qa__mark {
  align-self: center;
  justify-self: end;
  width: 8px;
  height: 8px;
  border-right: 1px solid var(--ice);
  border-bottom: 1px solid var(--ice);
  transform: rotate(45deg);
  transition: transform 0.18s var(--ease), border-color 0.16s var(--ease);
}

.page-faq .qa:hover .qa__mark {
  border-color: var(--score);
}

.page-faq .qa[open] .qa__mark {
  transform: rotate(-135deg);
}

.page-faq .faq-flag {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  border: 1px solid var(--moss);
  color: #9DC0A6;
  font-size: 11px;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.page-faq .faq-flag--clay {
  border-color: var(--clay);
  color: #E4A184;
}

.page-faq .faq-flag--ice {
  border-color: var(--ice-line);
  color: var(--ice);
}

.page-faq .qa__a {
  padding: 2px 18px 20px 70px;
  color: var(--bone-dim);
  font-size: 14.5px;
  line-height: 1.8;
}

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

.page-faq .qa__more {
  margin-top: 10px !important;
}

.page-faq .qa__link {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid var(--ice-line);
  padding-bottom: 1px;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-faq .qa__link:hover,
.page-faq .qa__link:focus-visible {
  color: var(--score);
  border-color: var(--score);
}

.page-faq details[open] .qa__a {
  animation: faq-reveal 0.18s var(--ease) both;
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 下一步 ---------- */
.page-faq .faq-next {
  color: var(--bone);
}

.page-faq .faq-next__list {
  list-style: none;
  margin: clamp(20px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--ink-line);
  border: 1px solid var(--ink-line);
}

.page-faq .faq-next__item {
  background: var(--grass-deep);
}

.page-faq .faq-next__link {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) 22px;
  grid-template-areas:
    "num name go"
    "num desc go";
  column-gap: 14px;
  row-gap: 4px;
  align-items: center;
  padding: 18px 16px;
  text-decoration: none;
  color: var(--bone);
  transition: background 0.16s var(--ease);
}

.page-faq .faq-next__link:hover,
.page-faq .faq-next__link:focus-visible {
  background: var(--grass);
}

.page-faq .faq-next__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 18px;
  color: var(--score);
}

.page-faq .faq-next__name {
  grid-area: name;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
}

.page-faq .faq-next__desc {
  grid-area: desc;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--bone-dim);
}

.page-faq .faq-next__go {
  grid-area: go;
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--ice);
  transition: transform 0.16s var(--ease), color 0.16s var(--ease);
}

.page-faq .faq-next__link:hover .faq-next__go,
.page-faq .faq-next__link:focus-visible .faq-next__go {
  color: var(--score);
  transform: translateX(3px);
}

.page-faq .faq-next__note {
  margin: 20px 0 0;
  font-size: 13.5px;
  color: var(--muted-on-dark);
}

.page-faq .faq-next__inline {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid var(--ice-line);
}

.page-faq .faq-next__inline:hover,
.page-faq .faq-next__inline:focus-visible {
  color: var(--score);
  border-color: var(--score);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-map__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-next__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-next__link {
    grid-template-columns: minmax(0, 1fr) 22px;
    grid-template-areas:
      "num go"
      "name go"
      "desc go";
    align-content: start;
    padding: 22px 20px 24px;
  }

  .page-faq .faq-next__go {
    align-self: start;
  }
}

@media (max-width: 639px) {
  .page-faq .qa__q {
    grid-template-columns: 38px minmax(0, 1fr) 14px;
    gap: 10px;
  }

  .page-faq .faq-flag {
    display: none;
  }

  .page-faq .qa__a {
    padding-left: 58px;
    padding-right: 14px;
  }

  .page-faq .faq-tab {
    font-size: 12.5px;
    padding: 7px 10px;
  }

  .page-faq .faq-map__figure .figure__frame {
    aspect-ratio: 4 / 3;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__mark,
  .page-faq .faq-next__go,
  .page-faq .faq-map__link::before {
    transition: none;
  }

  .page-faq details[open] .qa__a {
    animation: none;
  }
}