.page-faq {
  --faq-rail: 260px;
  --faq-hair: rgba(0, 87, 184, 0.14);
  --faq-hair-soft: rgba(0, 87, 184, 0.07);
  background: var(--ued-paper);
  color: var(--ued-ink);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq__intro {
  position: relative;
  padding: 28px 0 44px;
  background:
    radial-gradient(120% 90% at 90% -10%, rgba(74, 155, 255, 0.20), transparent 58%),
    radial-gradient(90% 70% at -4% 104%, rgba(255, 178, 122, 0.22), transparent 62%),
    var(--ued-paper);
}

.page-faq__intro::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--faq-hair-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--faq-hair-soft) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 82%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 82%);
  pointer-events: none;
}

.page-faq__intro .ued-container {
  position: relative;
  z-index: 1;
}

.page-faq__intro-copy {
  max-width: 900px;
  margin-top: 26px;
}

.page-faq__intro-copy .ued-eyebrow {
  margin: 0 0 14px;
}

.page-faq__intro-copy h1 {
  margin: 0;
  max-width: 17ch;
  font-size: clamp(30px, 7vw, 60px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--ued-navy);
}

.page-faq__intro-copy h1::after {
  content: "";
  display: block;
  width: 76px;
  height: 4px;
  margin-top: 20px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--ued-blue), var(--ued-orange));
}

.page-faq__intro-copy .ued-lede {
  margin: 22px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ued-gray);
}

.page-faq__kpis {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 1px;
  background: var(--faq-hair);
  border: 1px solid var(--faq-hair);
  border-radius: var(--ued-radius-sm);
  overflow: hidden;
}

.page-faq__kpi {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--ued-white);
}

.page-faq__kpi .ued-kpi {
  font-family: var(--ued-font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ued-blue);
}

.page-faq__kpi .ued-quiet {
  font-size: 13px;
  line-height: 1.5;
  color: var(--ued-gray);
}

/* ---------- 快速定位 ---------- */
.page-faq__locate {
  padding-top: 44px;
}

.page-faq__locate-grid {
  display: grid;
  gap: 30px;
}

.page-faq__locate-copy h2 {
  margin: 10px 0 12px;
  font-size: 26px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ued-navy);
}

.page-faq__locate-copy .ued-quiet {
  display: block;
  max-width: 42ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ued-gray);
}

.page-faq__index {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-hair);
}

.page-faq__index li {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq__index a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 8px;
  color: var(--ued-ink);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: background 200ms var(--ued-ease), padding-left 200ms var(--ued-ease), color 200ms var(--ued-ease);
}

.page-faq__index a:hover,
.page-faq__index a:focus-visible {
  padding-left: 16px;
  background: var(--ued-mist);
  color: var(--ued-blue);
}

.page-faq__index-num {
  flex: 0 0 auto;
  font-family: var(--ued-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ued-orange);
}

.page-faq__locate-figure {
  margin: 0;
}

.page-faq__locate-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--faq-hair);
  border-radius: var(--ued-radius);
  background: var(--ued-mist);
}

.page-faq__caption {
  display: block;
  margin-top: 10px;
  font-family: var(--ued-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ued-gray);
}

/* ---------- 问答组 ---------- */
.page-faq__qa {
  position: relative;
}

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

.page-faq__qa-grid {
  display: grid;
  gap: 24px;
}

.page-faq__qa-side {
  position: relative;
  padding-left: 16px;
  border-left: 2px solid var(--faq-hair);
}

.page-faq__num {
  display: inline-block;
  font-family: var(--ued-font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ued-orange);
}

.page-faq__qa-side h2 {
  margin: 10px 0 12px;
  font-size: 24px;
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--ued-navy);
}

.page-faq__qa-side .ued-quiet {
  display: block;
  max-width: 40ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ued-gray);
}

.page-faq__qa-side .ued-quiet a {
  color: var(--ued-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq__note {
  display: none;
}

.page-faq__qa-body {
  min-width: 0;
}

.page-faq__figure {
  margin: 0 0 24px;
}

.page-faq__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--faq-hair);
  border-radius: var(--ued-radius);
  background: var(--ued-mist);
}

/* ---------- 问答条目 ---------- */
.page-faq__list {
  display: block;
}

.page-faq__item {
  border: 1px solid var(--faq-hair);
  border-radius: var(--ued-radius-sm);
  background: var(--ued-white);
  transition: box-shadow 240ms var(--ued-ease), border-color 240ms var(--ued-ease);
}

.page-faq__item + .page-faq__item {
  margin-top: 12px;
}

.page-faq__item[open] {
  border-color: rgba(255, 107, 53, 0.42);
  box-shadow: inset 3px 0 0 var(--ued-orange), 0 20px 42px -32px rgba(0, 62, 133, 0.6);
}

.page-faq__q {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 17px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ued-ink);
}

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

.page-faq__q::marker {
  content: "";
}

.page-faq__q-text {
  flex: 1 1 auto;
}

.page-faq__q-sign {
  flex: 0 0 auto;
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--faq-hair);
  border-radius: 50%;
  background: var(--ued-paper);
  transition: border-color 240ms var(--ued-ease), background 240ms var(--ued-ease);
}

.page-faq__q-sign::before,
.page-faq__q-sign::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--ued-blue);
  transition: transform 240ms var(--ued-ease), opacity 240ms var(--ued-ease), background 240ms var(--ued-ease);
}

.page-faq__q-sign::before {
  width: 10px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq__q-sign::after {
  width: 2px;
  height: 10px;
  transform: translate(-50%, -50%);
}

.page-faq__item[open] .page-faq__q-sign {
  border-color: rgba(255, 107, 53, 0.5);
  background: rgba(255, 107, 53, 0.08);
}

.page-faq__item[open] .page-faq__q-sign::before,
.page-faq__item[open] .page-faq__q-sign::after {
  background: var(--ued-orange);
}

.page-faq__item[open] .page-faq__q-sign::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq__q:focus-visible {
  outline: 2px solid var(--ued-blue);
  outline-offset: -2px;
  border-radius: var(--ued-radius-sm);
}

.page-faq__a {
  padding: 0 18px 20px;
  border-top: 1px solid var(--faq-hair-soft);
  animation: faq-reveal 240ms var(--ued-ease) both;
}

.page-faq__a p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ued-gray);
}

.page-faq__a p:first-child {
  padding-top: 2px;
}

.page-faq__a strong {
  color: var(--ued-navy);
  font-weight: 700;
}

.page-faq__a a {
  color: var(--ued-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

/* ---------- 兜底联系 ---------- */
.page-faq__cta-panel {
  position: relative;
  overflow: hidden;
  padding: 32px 22px;
  border: 1px solid var(--faq-hair);
  border-radius: var(--ued-radius);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(0, 87, 184, 0.16), transparent 56%),
    radial-gradient(95% 120% at 0% 110%, rgba(255, 178, 122, 0.30), transparent 62%),
    var(--ued-white);
}

.page-faq__cta-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--ued-blue), var(--ued-orange));
}

.page-faq__cta-panel .ued-eyebrow {
  margin: 0 0 12px;
}

.page-faq__cta-panel h2 {
  margin: 0;
  font-size: 26px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ued-navy);
}

.page-faq__cta-text {
  max-width: 62ch;
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ued-gray);
}

.page-faq__cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq__cta-meta {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--faq-hair-soft);
  font-size: 13px;
  line-height: 1.8;
  color: var(--ued-gray);
}

.page-faq__cta-meta a {
  color: var(--ued-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 900px) {
  .page-faq__intro {
    padding: 40px 0 72px;
  }

  .page-faq__intro-copy {
    margin-top: 40px;
  }

  .page-faq__locate {
    padding-top: 64px;
  }

  .page-faq__locate-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 64px;
    align-items: center;
  }

  .page-faq__locate-copy h2 {
    font-size: 34px;
  }

  .page-faq__qa-grid {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }

  .page-faq__qa-side {
    position: sticky;
    top: calc(var(--ued-header-h) + 24px);
    padding-left: 20px;
  }

  .page-faq__qa-side h2 {
    font-size: 30px;
  }

  .page-faq__note {
    display: inline-block;
    margin-top: 20px;
    writing-mode: vertical-rl;
    font-family: var(--ued-font-mono);
    font-size: 12px;
    letter-spacing: 0.2em;
    color: var(--ued-gray);
  }

  .page-faq__q {
    padding: 20px 24px;
    font-size: 17px;
  }

  .page-faq__a {
    padding: 0 24px 24px;
  }

  .page-faq__a p {
    font-size: 15.5px;
  }

  .page-faq__cta-panel {
    padding: 56px 64px;
  }

  .page-faq__cta-panel h2 {
    font-size: 34px;
  }

  .page-faq__cta-text {
    font-size: 16px;
  }
}

@media (min-width: 1240px) {
  .page-faq {
    --faq-rail: 300px;
  }
}

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

  .page-faq__q-sign,
  .page-faq__q-sign::before,
  .page-faq__q-sign::after,
  .page-faq__item,
  .page-faq__index a {
    transition: none;
  }
}