.page-faq {
  --faq-line: rgba(198, 205, 212, .16);
  --faq-line-strong: rgba(198, 205, 212, .32);
  --faq-sticky: 4.25rem;
  --faq-shadow: 0 20px 44px rgba(4, 12, 21, .34);
}

.page-faq :is(a, button, summary):focus-visible {
  outline: 2px solid var(--amber-soft);
  outline-offset: 3px;
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */
.page-faq .guide-hero {
  padding-block: clamp(1rem, 2.5vw, 1.75rem) clamp(2.25rem, 5vw, 4rem);
}

.page-faq .guide-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: clamp(1.25rem, 3vw, 2rem);
  align-items: start;
}

.page-faq .guide-eyebrow {
  margin: 0;
  font-size: .75rem;
  letter-spacing: .28em;
  color: var(--celadon-soft);
}

.page-faq .guide-title {
  margin: .85rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.25rem, 6.2vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .guide-lede {
  margin-top: 1.1rem;
  max-width: 34em;
  color: var(--cloud);
}

.page-faq .guide-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(7.5rem, 1fr));
  gap: 1rem;
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  padding-top: 1.2rem;
  border-top: 1px solid var(--faq-line);
}

.page-faq .guide-facts__item {
  margin: 0;
}

.page-faq .guide-facts__label {
  font-size: .72rem;
  letter-spacing: .2em;
  color: var(--celadon-soft);
}

.page-faq .guide-facts__num {
  margin: .3rem 0 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(1.4rem, 3vw, 2rem);
  line-height: 1.1;
  color: var(--amber-soft);
}

/* 检索条 */
.page-faq .guide-search {
  border: 1px solid var(--line-celadon);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 3vw, 1.6rem);
  box-shadow: var(--faq-shadow);
}

.page-faq .guide-search__title {
  margin: 0 0 .9rem;
  font-size: .95rem;
  letter-spacing: .1em;
  color: var(--white);
}

.page-faq .guide-search__words {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .guide-word {
  display: inline-block;
  padding: .42rem .82rem;
  border-radius: 999px;
  border: 1px solid var(--line-amber);
  color: var(--amber-soft);
  font-size: .88rem;
  text-decoration: none;
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .guide-word:hover,
.page-faq .guide-word:focus-visible {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink-900);
}

.page-faq .guide-search__hint {
  margin: .9rem 0 0;
  font-size: .84rem;
  line-height: 1.7;
  color: var(--cloud);
}

/* 分类胶囊 */
.page-faq .guide-caps {
  display: flex;
  gap: .5rem;
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
  padding: .85rem 0;
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .guide-cap {
  flex: 0 0 auto;
  padding: .48rem .95rem;
  border-radius: 999px;
  border: 1px solid var(--faq-line-strong);
  color: var(--cloud);
  font-size: .87rem;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .guide-cap:hover,
.page-faq .guide-cap:focus-visible {
  background: var(--celadon);
  border-color: var(--celadon);
  color: var(--ink-900);
}

/* ---------- 三件常问的事 ---------- */
.page-faq .guide-three {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1rem, 2.5vw, 1.5rem);
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
}

.page-faq .brief-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  color: var(--ink-900);
  border: 1px solid rgba(11, 24, 38, .1);
  border-top: 4px solid var(--amber);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 2.5vw, 1.7rem);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-faq .brief-card:hover {
  transform: translateY(-2px);
}

.page-faq .brief-card--celadon {
  border-top-color: var(--celadon);
}

.page-faq .brief-card--moss {
  border-top-color: var(--moss);
}

.page-faq .brief-card__kicker {
  margin: 0;
  font-size: .72rem;
  letter-spacing: .22em;
  color: var(--ink-600);
}

.page-faq .brief-card__title {
  margin: .6rem 0 .9rem;
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  line-height: 1.35;
  color: var(--ink-900);
}

.page-faq .brief-card__list {
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: .5rem;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--ink-600);
}

.page-faq .brief-card__list li::marker {
  color: var(--amber);
  font-weight: 700;
}

.page-faq .brief-card__foot {
  margin: auto 0 0;
  padding-top: 1rem;
  font-size: .82rem;
  color: var(--ink-600);
}

/* ---------- 分类总览 ---------- */
.page-faq .guide-figure {
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  min-width: 0;
}

.page-faq .guide-figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--faq-line);
}

.page-faq .guide-figure__cap {
  margin-top: .6rem;
  font-size: .82rem;
  line-height: 1.6;
  color: inherit;
  opacity: .72;
}

.page-faq .guide-cats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(.9rem, 2.2vw, 1.25rem);
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
}

.page-faq .cat-card {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  padding: clamp(1.1rem, 2.4vw, 1.5rem);
  background: linear-gradient(180deg, rgba(92, 143, 123, .16), rgba(92, 143, 123, 0) 58%);
  transition: border-color .2s var(--ease);
}

.page-faq .cat-card:hover {
  border-color: var(--line-celadon);
}

.page-faq .cat-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: .75rem;
}

.page-faq .cat-card__name {
  margin: 0;
  font-size: 1.08rem;
  color: var(--white);
}

.page-faq .cat-card__count {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .82rem;
  color: var(--celadon-soft);
}

.page-faq .cat-card__desc {
  margin: .7rem 0 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--cloud);
}

/* ---------- 六步演示 ---------- */
.page-faq .guide-walk {
  list-style: none;
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1rem, 2.4vw, 1.4rem);
}

.page-faq .guide-walk__step {
  border-top: 1px solid var(--faq-line);
  padding-top: 1rem;
}

.page-faq .guide-walk__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(1.75rem, 3.4vw, 2.4rem);
  line-height: 1;
  color: var(--amber);
}

.page-faq .guide-walk__title {
  margin: .7rem 0 .35rem;
  font-size: 1.02rem;
  color: var(--white);
}

.page-faq .guide-walk__text {
  margin: 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--cloud);
}

/* ---------- 折叠问答 ---------- */
.page-faq .guide-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 2.75rem);
  margin-top: clamp(1rem, 2.5vw, 1.5rem);
}

.page-faq .qa-group {
  padding: clamp(1.1rem, 2.6vw, 1.6rem) 0;
  border-top: 1px solid var(--faq-line);
  scroll-margin-top: 6.5rem;
  transition: background-color .25s var(--ease), box-shadow .25s var(--ease);
}

.page-faq .qa-group:target {
  background: rgba(92, 143, 123, .12);
  box-shadow: inset 3px 0 0 0 var(--celadon);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-faq .qa-group__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .75rem;
}

.page-faq .qa-group__title {
  margin: 0;
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  color: var(--white);
}

.page-faq .qa-group__desc {
  margin: .5rem 0 .25rem;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--cloud);
}

.page-faq .qa-item {
  border-bottom: 1px solid var(--faq-line);
  padding-left: 0;
  transition: box-shadow .2s var(--ease), padding-left .2s var(--ease);
}

.page-faq .qa-item[open] {
  box-shadow: inset 3px 0 0 0 var(--moss);
  padding-left: .9rem;
}

.page-faq .qa-item summary {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  padding: 1rem 0;
  cursor: pointer;
  list-style: none;
  font-size: .98rem;
  font-weight: 500;
  color: var(--paper);
  transition: color .18s var(--ease);
}

.page-faq .qa-item summary::-webkit-details-marker {
  display: none;
}

.page-faq .qa-item summary:hover {
  color: var(--amber-soft);
}

.page-faq .qa-item[open] summary {
  color: var(--amber-soft);
}

.page-faq .qa-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 1.15rem;
  height: 1.15rem;
  margin-top: .28rem;
  color: currentColor;
}

.page-faq .qa-item__mark::before,
.page-faq .qa-item__mark::after {
  content: "";
  position: absolute;
  background: currentColor;
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.page-faq .qa-item__mark::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  transform: translateY(-50%);
}

.page-faq .qa-item__mark::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
}

.page-faq .qa-item[open] .qa-item__mark::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-faq .qa-item__body {
  padding: 0 0 1.25rem 1.9rem;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--cloud);
}

.page-faq .qa-steps {
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: .4rem;
}

.page-faq .qa-steps li::marker {
  color: var(--amber);
  font-weight: 700;
}

.page-faq .qa-item__body .note {
  margin: .8rem 0 0;
  font-size: .82rem;
  color: var(--celadon-soft);
}

/* 右侧窄栏 */
.page-faq .guide-side {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-faq .side-card {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  padding: clamp(1.1rem, 2.4vw, 1.5rem);
  background: rgba(20, 41, 62, .86);
}

.page-faq .side-card--help {
  border-color: var(--line-celadon);
  background: rgba(92, 143, 123, .16);
}

.page-faq .side-card__title {
  margin: 0 0 .75rem;
  font-size: .98rem;
  color: var(--white);
}

.page-faq .side-card__text {
  margin: 0 0 1rem;
  font-size: .88rem;
  line-height: 1.8;
  color: var(--cloud);
}

.page-faq .side-card__list {
  list-style: none;
  margin: 0 0 1.1rem;
  padding: 0;
  display: grid;
  gap: .6rem;
  font-size: .86rem;
  line-height: 1.75;
  color: var(--cloud);
}

.page-faq .side-card__list strong {
  color: var(--paper);
  font-weight: 600;
}

/* ---------- 报错对照 ---------- */
.page-faq .guide-errors {
  scroll-margin-top: 5rem;
}

.page-faq .guide-table__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 2.5rem);
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
  align-items: start;
}

.page-faq .guide-table__wrap {
  min-width: 0;
  overflow-x: auto;
  border: 1px solid rgba(11, 24, 38, .14);
  border-radius: var(--radius);
  background: var(--white);
}

.page-faq .guide-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: .89rem;
  color: var(--ink-900);
}

.page-faq .guide-table__caption {
  padding: .9rem 1rem;
  text-align: left;
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--ink-600);
  background: rgba(11, 24, 38, .04);
}

.page-faq .guide-table th,
.page-faq .guide-table td {
  padding: .85rem 1rem;
  text-align: left;
  vertical-align: top;
  line-height: 1.65;
  border-bottom: 1px solid rgba(11, 24, 38, .1);
}

.page-faq .guide-table thead th {
  background: var(--ink-700);
  color: var(--paper);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .06em;
}

.page-faq .guide-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .guide-table tr.needs-help td {
  background: rgba(180, 96, 74, .07);
}

.page-faq .guide-table tr.needs-help td:first-child {
  box-shadow: inset 3px 0 0 0 var(--clay);
  color: var(--clay);
  font-weight: 600;
}

.page-faq .guide-badge {
  display: inline-block;
  padding: .15rem .55rem;
  border-radius: 999px;
  font-size: .75rem;
  letter-spacing: .04em;
  white-space: nowrap;
}

.page-faq .guide-badge--self {
  background: rgba(92, 143, 123, .16);
  border: 1px solid rgba(92, 143, 123, .42);
  color: #3d6a56;
}

.page-faq .guide-badge--human {
  background: rgba(180, 96, 74, .14);
  border: 1px solid rgba(180, 96, 74, .44);
  color: #8d4030;
}

.page-faq .guide-figure--errors {
  margin: 0;
}

.page-faq .guide-figure--errors .guide-figure__img {
  aspect-ratio: 12 / 7;
}

/* ---------- 人工协助与常用入口 ---------- */
.page-faq .guide-help {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 3.5vw, 3rem);
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

.page-faq .guide-help__list {
  margin: 1.25rem 0 0;
  padding-left: 1.15rem;
  display: grid;
  gap: .55rem;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--cloud);
}

.page-faq .guide-help__list li::marker {
  color: var(--clay);
}

.page-faq .guide-help__note {
  margin: 1.35rem 0 1.5rem;
  max-width: 34em;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--cloud);
}

.page-faq .guide-help__side-title {
  margin: 0 0 .9rem;
  font-size: .95rem;
  letter-spacing: .08em;
  color: var(--white);
}

.page-faq .guide-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .5rem;
}

.page-faq .guide-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .85rem 1.1rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  color: var(--paper);
  font-size: .92rem;
  text-decoration: none;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .guide-links a::after {
  content: "→";
  flex: 0 0 auto;
  color: var(--amber-soft);
}

.page-faq .guide-links a:hover,
.page-faq .guide-links a:focus-visible {
  border-color: var(--line-amber);
  background: rgba(228, 145, 58, .1);
}

.page-faq .guide-help__side-note {
  margin: 1rem 0 0;
  font-size: .82rem;
  line-height: 1.75;
  color: var(--celadon-soft);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .guide-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .guide-three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-faq .guide-hero__inner {
    grid-template-columns: minmax(0, 1.65fr) minmax(18rem, 1fr);
  }

  .page-faq .guide-help {
    grid-template-columns: minmax(0, 1.5fr) minmax(16rem, 1fr);
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-faq .guide-table__layout {
    grid-template-columns: minmax(0, 1.4fr) minmax(15rem, .6fr);
  }
}

@media (min-width: 1080px) {
  .page-faq .guide-cats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .guide-split {
    grid-template-columns: minmax(0, 1.6fr) minmax(17rem, 1fr);
    align-items: start;
  }

  .page-faq .guide-side {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .guide-caps {
    position: sticky;
    top: var(--faq-sticky);
    z-index: 5;
    background: rgba(11, 24, 38, .94);
    backdrop-filter: blur(10px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq :is(a, button, summary, .brief-card, .cat-card, .qa-item) {
    transition: none;
  }
}