.page-faq {
  --faq-ink-soft: #3A4250;
  --faq-indent: 48px;
  --faq-cols: 40px 1fr 18px;
  --faq-gap: 8px;
  background-color: var(--paper);
  padding-bottom: 72px;
}

.page-faq .breadcrumb {
  padding-top: 24px;
}

.page-faq .page-head {
  padding: 22px 0 28px;
  border-bottom: 1px solid var(--rule);
}

.page-faq .page-head__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--copper);
}

.page-faq .page-head__title {
  margin: 10px 0 14px;
  font-family: var(--font-head);
  font-size: clamp(30px, 6.4vw, 56px);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .page-head__lead {
  max-width: 62ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

/* 首屏图 */
.page-faq .faq-figure {
  margin: 28px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  border: 1px solid var(--rule);
}

/* 筛选带 */
.page-faq .filter-bar {
  position: sticky;
  top: 0;
  z-index: 8;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 32px;
  padding: 14px 0;
  background-color: var(--paper);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.page-faq .filter-bar__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--copper);
  border-radius: 999px;
  background-color: transparent;
  color: var(--copper);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.4;
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-faq .chip:hover {
  background-color: var(--copper-tint);
}

.page-faq .chip:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
}

.page-faq .chip[aria-pressed="true"] {
  background-color: var(--copper-tint);
  color: var(--ink);
}

.page-faq .chip__count {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
}

/* 问答列表 */
.page-faq .qa-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .qa-item {
  border-bottom: 1px solid var(--rule);
}

.page-faq .qa-item[hidden] {
  display: none;
}

.page-faq .qa {
  display: block;
}

.page-faq .qa__sum {
  display: grid;
  grid-template-columns: var(--faq-cols);
  column-gap: var(--faq-gap);
  align-items: start;
  padding: 16px 0;
  list-style: none;
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease);
}

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

.page-faq .qa__sum:hover {
  background-color: var(--cinnabar-tint);
}

.page-faq .qa__sum:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: -2px;
}

.page-faq .qa__no {
  padding-right: 6px;
  border-right: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .qa__q {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .qa__sign {
  position: relative;
  justify-self: end;
  width: 14px;
  height: 14px;
  margin-top: 7px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background-color: var(--muted);
  transition: transform var(--t-mid) var(--ease), background-color var(--t-fast) var(--ease);
}

.page-faq .qa__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .qa__sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .qa[open] .qa__sign::before,
.page-faq .qa[open] .qa__sign::after {
  background-color: var(--cinnabar);
}

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

.page-faq .qa__body {
  padding: 0 0 20px var(--faq-indent);
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
  animation: faq-fade var(--t-mid) var(--ease);
}

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

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

.page-faq .qa__body a {
  color: var(--copper);
  text-decoration: none;
  border-bottom: 1px solid var(--copper);
}

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

.page-faq .k {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--copper);
  border-bottom: 1px solid var(--copper);
  padding-bottom: 1px;
  white-space: nowrap;
}

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

/* 两行对照表 */
.page-faq .mini-compare-wrap {
  margin: 12px 0 4px;
  overflow-x: auto;
}

.page-faq .mini-compare {
  width: 100%;
  min-width: 380px;
  margin: 0;
  border-collapse: collapse;
  font-size: 14px;
  font-family: var(--font-body);
}

.page-faq .mini-compare th,
.page-faq .mini-compare td {
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--rule);
}

.page-faq .mini-compare thead th {
  background-color: var(--ink);
  color: var(--paper);
  border-bottom: none;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.page-faq .mini-compare tbody tr:nth-child(even) {
  background-color: var(--copper-tint);
}

.page-faq .mini-compare tbody td:first-child {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--copper);
  white-space: nowrap;
}

/* 仍未解决 */
.page-faq .resolve {
  margin-top: 52px;
  padding-top: 34px;
  border-top: 1px solid var(--rule);
}

.page-faq .resolve__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-faq .resolve__title {
  margin: 6px 0 14px;
  font-family: var(--font-head);
  font-size: clamp(24px, 4.6vw, 36px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink);
}

.page-faq .resolve__lead {
  max-width: 56ch;
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

.page-faq .resolve__lead a {
  color: var(--copper);
  text-decoration: none;
  border-bottom: 1px solid var(--copper);
}

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

.page-faq .need-list {
  counter-reset: need;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-faq .need-list li {
  counter-increment: need;
  position: relative;
  padding: 10px 0 10px 46px;
  border-top: 1px solid var(--rule);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .need-list li:last-child {
  border-bottom: 1px solid var(--rule);
}

.page-faq .need-list li::before {
  content: counter(need, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--copper);
}

.page-faq .mail-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-top: 18px;
  padding: 14px 16px;
  background-color: var(--paper-2);
  border: 1px solid var(--rule);
}

.page-faq .mail-row__addr {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  word-break: break-all;
}

.page-faq .resolve__figure {
  margin: 0 0 20px;
}

.page-faq .resolve__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--rule);
}

.page-faq .faq-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  font-size: 14px;
}

.page-faq .faq-links a {
  color: var(--copper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

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

@media (min-width: 720px) {
  .page-faq {
    --faq-indent: 72px;
    --faq-cols: 56px 1fr 24px;
    --faq-gap: 16px;
  }

  .page-faq .qa__no {
    padding-right: 12px;
    font-size: 13px;
  }

  .page-faq .qa__sum {
    padding: 20px 0;
  }

  .page-faq .qa__q {
    font-size: 16.5px;
  }

  .page-faq .qa__body {
    font-size: 15.5px;
  }

  .page-faq .filter-bar {
    padding: 16px 0;
  }
}

@media (min-width: 900px) {
  .page-faq .resolve__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 44px;
  }

  .page-faq .page-head {
    padding-top: 30px;
  }
}

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

  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after,
  .page-faq .qa__sum,
  .page-faq .chip,
  .page-faq .faq-links a {
    transition: none;
  }

  .page-faq .qa[open] .qa__sign::after {
    transform: none;
  }
}