.page-faq {
  --faq-rule: rgba(14, 58, 93, 0.14);
  --faq-shadow-hard: 6px 6px 0 var(--space);
  --faq-shadow-soft: 4px 4px 0 var(--silver);
  padding-bottom: clamp(3rem, 8vw, 6rem);
  background:
    linear-gradient(180deg, rgba(143, 216, 255, 0.22) 0%, rgba(247, 251, 255, 0) 320px),
    var(--snow);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  padding: clamp(1.25rem, 3vw, 2.5rem) 0 clamp(2.25rem, 5vw, 3.5rem);
}

.page-faq .faq-hero__title {
  margin: 0.75rem 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(2rem, 5.2vw, 3.5rem);
  line-height: 1.18;
  letter-spacing: 0.04em;
  color: var(--space);
  text-wrap: balance;
}

.page-faq .faq-hero__lede {
  margin: 1rem 0 0;
  max-width: 46ch;
  font-size: clamp(1rem, 1.6vw, 1.075rem);
  line-height: 1.85;
  color: var(--char);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--deepice);
  text-decoration: none;
  background: var(--snow);
  border: 2px solid var(--deepice);
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  background: var(--space);
  color: var(--ice);
  transform: translate(-2px, -2px);
}

.page-faq .faq-jump__idx {
  color: var(--orange);
  font-weight: 700;
}

.page-faq .faq-status {
  padding: 1.1rem 1.15rem;
  background: var(--space);
  color: var(--snow);
  border: var(--bw) solid var(--space);
  box-shadow: 8px 8px 0 var(--orange);
}

.page-faq .faq-status__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding-bottom: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--ice);
  border-bottom: 1px dashed rgba(143, 216, 255, 0.42);
}

.page-faq .faq-status__list {
  display: grid;
  gap: 0.6rem;
  margin: 0.85rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-status__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  padding-bottom: 0.5rem;
  font-size: 0.875rem;
  color: var(--snow);
  border-bottom: 1px solid rgba(143, 216, 255, 0.16);
}

.page-faq .faq-status__row:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-faq .faq-status__row span:first-child {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--aurora);
}

/* ---------- 通用分区 ---------- */
.page-faq .faq-section {
  padding: clamp(2rem, 5vw, 3.25rem) 0;
  border-top: 2px solid var(--faq-rule);
}

.page-faq .faq-h2 {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin: 0 0 0.6rem;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: 0.04em;
  color: var(--space);
}

.page-faq .faq-h2__idx {
  flex: none;
  padding: 0.1rem 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--orange);
  border: 2px solid var(--orange);
}

.page-faq .faq-note {
  margin: 0 0 1.5rem;
  max-width: 64ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--char);
}

/* ---------- 入口速查 ---------- */
.page-faq .entry-map {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: start;
  margin-top: 1.25rem;
}

.page-faq .entry-list {
  display: grid;
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .entry-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.2rem 1rem;
  padding: 0.9rem 1.1rem;
  background: var(--snow);
  border: var(--bw) solid var(--space);
  box-shadow: var(--faq-shadow-soft);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.page-faq .entry-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--faq-shadow-hard);
}

.page-faq .entry-card__idx {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--deepice);
}

.page-faq .entry-card__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--space);
}

.page-faq .entry-card__desc {
  grid-column: 2;
  margin: 0.15rem 0 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--char);
}

/* ---------- 问答主体：索引 + 折叠 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  padding-top: clamp(2rem, 5vw, 3rem);
  border-top: 2px solid var(--faq-rule);
}

.page-faq .faq-index {
  padding: 1rem 1.1rem;
  background: var(--snow);
  border: var(--bw) solid var(--space);
  box-shadow: var(--faq-shadow-soft);
}

.page-faq .faq-index__title {
  margin: 0 0 0.75rem;
  padding-bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--deepice);
  border-bottom: 1px dashed var(--silver);
}

.page-faq .faq-index__list {
  display: grid;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__list a {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.5rem;
  padding: 0.35rem 0.3rem;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--char);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: border-color 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--space);
  background: var(--ice-soft);
  border-left-color: var(--orange);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  color: var(--deepice);
}

.page-faq .faq-list > .faq-h2 {
  margin-bottom: 1rem;
}

.page-faq .filter-bar {
  margin-bottom: 0.75rem;
}

.page-faq .filter-status {
  margin: 0 0 1rem;
}

.page-faq .faq-item {
  margin-bottom: 0.85rem;
  background: var(--snow);
  border: var(--bw) solid var(--space);
  scroll-margin-top: 6rem;
  transition: box-shadow 0.2s ease;
}

.page-faq .faq-item[open] {
  box-shadow: var(--faq-shadow-hard);
}

.page-faq .faq-item__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.85rem;
  align-items: center;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__summary:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: -3px;
}

.page-faq .faq-item__idx {
  padding: 0.2rem 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--snow);
  background: var(--deepice);
}

.page-faq .faq-item__q {
  font-size: clamp(0.9375rem, 1.8vw, 1.0625rem);
  font-weight: 700;
  line-height: 1.55;
  color: var(--space);
}

.page-faq .faq-item__mark {
  position: relative;
  flex: none;
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid var(--deepice);
  background: var(--snow);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--orange);
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__mark::before {
  width: 0.75rem;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  width: 2px;
  height: 0.75rem;
  transition: transform 0.2s ease;
}

.page-faq .faq-item[open] .faq-item__mark {
  background: var(--orange);
  border-color: var(--orange);
}

.page-faq .faq-item[open] .faq-item__mark::before,
.page-faq .faq-item[open] .faq-item__mark::after {
  background: var(--snow);
}

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

.page-faq .faq-item__a {
  padding: 1rem 1.15rem 1.2rem;
  background: var(--paper);
  border-top: 1px dashed var(--silver);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 68ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--char);
}

.page-faq .faq-item__a a {
  color: var(--deepice);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--orange);
}

.page-faq .filter-empty {
  margin: 1rem 0;
  padding: 1rem 1.1rem;
  font-size: 0.9375rem;
  color: var(--char);
  background: var(--paper);
  border: 2px dashed var(--silver);
}

/* ---------- 版本对照表 ---------- */
.page-faq .version-wrap {
  margin-top: 1.5rem;
  overflow-x: auto;
  background: var(--snow);
  border: var(--bw) solid var(--space);
  box-shadow: var(--faq-shadow-soft);
  -webkit-overflow-scrolling: touch;
}

.page-faq .version-table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.page-faq .version-table thead th {
  padding: 0.8rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-align: left;
  color: var(--ice);
  background: var(--space);
}

.page-faq .version-table tbody th,
.page-faq .version-table tbody td {
  padding: 0.8rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--faq-rule);
  vertical-align: top;
}

.page-faq .version-table tbody th {
  font-weight: 700;
  color: var(--space);
  white-space: nowrap;
}

.page-faq .version-table tbody td {
  line-height: 1.7;
  color: var(--char);
}

.page-faq .version-table tbody tr:nth-child(even) {
  background: rgba(143, 216, 255, 0.12);
}

.page-faq .version-table tbody tr:last-child th,
.page-faq .version-table tbody tr:last-child td {
  border-bottom: none;
}

/* ---------- 反馈与支持 ---------- */
.page-faq .support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.25rem;
}

.page-faq .support-card {
  margin: 0;
}

.page-faq .support-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-faq .support-card__main {
  margin: 0.5rem 0 0;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--space);
}

.page-faq .support-card__desc {
  margin: 0.5rem 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--char);
}

.page-faq .panel--deep .support-card__label {
  color: var(--aurora);
}

.page-faq .panel--deep .support-card__main,
.page-faq .panel--deep .support-card__desc {
  color: var(--snow);
}

/* ---------- 本地服务 ---------- */
.page-faq .local-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: start;
  margin-top: 1.25rem;
}

.page-faq .city-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.25rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .city-list li {
  padding: 0.35rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--snow);
  background: var(--deepice);
  border: 2px solid var(--deepice);
}

.page-faq .city-list li.is-team {
  color: var(--space);
  background: var(--aurora);
  border-color: var(--space);
  box-shadow: 3px 3px 0 var(--space);
}

.page-faq .city-note {
  margin: 0.9rem 0 0;
  max-width: 56ch;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--char);
}

/* ---------- 故障排查 ---------- */
.page-faq .trouble-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: trouble;
}

.page-faq .trouble-step {
  padding: 1.05rem 1.15rem;
  background: var(--snow);
  border-left: 6px solid var(--orange);
  border-top: 2px solid var(--faq-rule);
  border-right: 2px solid var(--faq-rule);
  border-bottom: 2px solid var(--faq-rule);
}

.page-faq .trouble-step__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--deepice);
}

.page-faq .trouble-step__title {
  margin: 0.4rem 0 0;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--space);
}

.page-faq .trouble-step p {
  margin: 0.4rem 0 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--char);
}

/* ---------- 底部行动区 ---------- */
.page-faq .faq-cta {
  display: grid;
  gap: 1rem;
  margin-top: clamp(2rem, 5vw, 3rem);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--space);
  border: var(--bw) solid var(--space);
  box-shadow: 8px 8px 0 var(--orange);
}

.page-faq .faq-cta__title {
  margin: 0;
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  font-weight: 900;
  letter-spacing: 0.04em;
  color: var(--snow);
}

.page-faq .faq-cta__desc {
  margin: 0;
  max-width: 62ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: rgba(247, 251, 255, 0.82);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---------- 断点 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .entry-map {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 2rem;
  }

  .page-faq .local-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 2rem;
  }

  .page-faq .support-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .support-grid > :nth-child(3) {
    grid-column: 1 / -1;
  }

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

@media (min-width: 1024px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.9fr);
    gap: 2.75rem;
    align-items: end;
  }

  .page-faq .faq-body {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 3rem;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 5.5rem;
    max-height: calc(100vh - 8rem);
    overflow-y: auto;
  }

  .page-faq .faq-index__list {
    grid-template-columns: 1fr;
  }

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

  .page-faq .support-grid > :nth-child(3) {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a,
  .page-faq .entry-card,
  .page-faq .faq-item,
  .page-faq .faq-item__mark::after {
    transition: none;
  }

  .page-faq .faq-jump a:hover,
  .page-faq .entry-card:hover {
    transform: none;
  }
}