.page-faq {
  --faq-measure: 760px;
  --faq-index-w: 232px;
  padding-bottom: 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: 28px;
  padding-bottom: 30px;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.page-faq .faq-hero h1 {
  margin: 0 0 20px;
  max-width: 900px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 7.5vw, 4.2rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--c-title);
}

.page-faq .faq-hero__lead {
  margin: 0 0 14px;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-text);
}

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

/* ---------- 排查流程信息图 ---------- */
.page-faq .faq-map {
  margin-bottom: 44px;
}

.page-faq .faq-map img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--c-steel);
  border-radius: 2px;
}

.page-faq .faq-map figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--c-mist);
}

/* ---------- 主体：索引 + 解答 ---------- */
.page-faq .faq-body {
  padding-bottom: 56px;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: start;
}

.page-faq .faq-index {
  border-top: 1px solid var(--c-copper);
  padding-top: 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-copper);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid var(--c-steel);
  color: var(--c-mist);
  font-size: 0.88rem;
  line-height: 1.5;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-index__link .mono {
  flex: none;
  font-size: 0.74rem;
  color: var(--c-copper);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--c-title);
  border-left-color: var(--c-copper-lit);
  background-color: rgba(185, 115, 58, 0.09);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--c-copper-lit);
  outline-offset: 2px;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: var(--faq-measure);
}

.page-faq .faq-item {
  scroll-margin-top: 124px;
  border: 1px solid var(--c-steel);
  border-left: 3px solid var(--c-steel);
  border-radius: 2px;
  background-color: var(--c-night);
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--c-copper);
}

.page-faq .faq-item:hover {
  border-color: var(--c-copper);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 17px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--c-copper-lit);
  outline-offset: -2px;
}

.page-faq .faq-item__no {
  color: var(--c-copper);
  font-size: 0.8rem;
}

.page-faq .faq-item__q {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.06rem;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--c-title);
}

.page-faq .faq-item__mark {
  width: 10px;
  height: 10px;
  margin-top: -4px;
  border-right: 2px solid var(--c-copper-lit);
  border-bottom: 2px solid var(--c-copper-lit);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__mark {
  margin-top: 3px;
  transform: rotate(-135deg);
}

.page-faq .faq-item__body {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 0 18px;
  padding: 16px 0 22px;
  border-top: 1px solid var(--c-steel);
}

.page-faq .faq-phase {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-faq .faq-phase__label {
  justify-content: center;
  text-align: center;
}

.page-faq .faq-phase p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.78;
  color: var(--c-text);
}

.page-faq .faq-phase a {
  color: var(--c-copper-lit);
  text-decoration: none;
  border-bottom: 1px solid rgba(229, 164, 105, 0.45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-phase a:hover,
.page-faq .faq-phase a:focus-visible {
  color: var(--c-cyan);
  border-bottom-color: var(--c-cyan);
}

/* ---------- 底部联络卡片 ---------- */
.page-faq .faq-contact {
  padding-bottom: 64px;
}

.page-faq .faq-contact__card {
  display: grid;
  grid-template-columns: 1fr;
  overflow: hidden;
  border: 1px solid var(--c-steel);
  border-radius: 2px;
  background-color: var(--c-night);
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-contact__card:hover {
  border-color: var(--c-copper-lit);
}

.page-faq .faq-contact__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 190px;
  object-fit: cover;
  opacity: 0.5;
}

.page-faq .faq-contact__panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 24px 20px 30px;
}

.page-faq .faq-contact__kicker {
  margin: 0;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--c-copper);
}

.page-faq .faq-contact__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 5vw, 2rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--c-title);
}

.page-faq .faq-contact__panel > p {
  margin: 0;
  max-width: 46ch;
  font-size: 0.96rem;
  line-height: 1.78;
  color: var(--c-text);
}

.page-faq .faq-contact__list {
  margin: 4px 0 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: baseline;
  padding-bottom: 8px;
  border-bottom: 1px dashed rgba(36, 69, 95, 0.75);
}

.page-faq .faq-contact__row dt {
  flex: none;
  min-width: 74px;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}

.page-faq .faq-contact__row dd {
  margin: 0;
  font-size: 0.92rem;
  color: var(--c-cyan);
  word-break: break-all;
}

.page-faq .faq-contact__cta {
  align-self: flex-start;
  margin-top: 6px;
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-top: 56px;
    padding-bottom: 40px;
  }

  .page-faq .faq-map {
    margin-bottom: 60px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 108px;
  }

  .page-faq .faq-body {
    padding-bottom: 72px;
  }

  .page-faq .faq-phase {
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 16px;
  }

  .page-faq .faq-contact__card {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: stretch;
  }

  .page-faq .faq-contact__img {
    height: 100%;
    min-height: 340px;
  }

  .page-faq .faq-contact__panel {
    padding: 40px 40px 44px;
    justify-content: center;
  }

  .page-faq .faq-contact {
    padding-bottom: 80px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item,
  .page-faq .faq-item__mark,
  .page-faq .faq-contact__card,
  .page-faq .faq-phase a {
    transition: none;
  }
}