.page-faq {
  --faq-rail-w: 248px;
  --faq-line: rgba(31, 84, 128, .55);
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  padding-top: 26px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-bottom: 72px;
}

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

.page-faq .faq-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-faq .faq-hero__eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--amber);
}

.page-faq .faq-hero__title {
  margin: 0 0 22px;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(30px, 7.2vw, 52px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--warm);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 38ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin: 30px 0 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-hero__stat {
  display: flex;
  align-items: baseline;
  gap: 7px;
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-hero__stat b {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--amber);
}

.page-faq .faq-hero__figure {
  margin: 0;
  aspect-ratio: 3 / 2;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--ink-archive);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 抽屉式主体 ---------- */
.page-faq .faq-drawer {
  display: grid;
  gap: 34px;
}

.page-faq .faq-rail__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-faq .faq-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 14px;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--mist);
  text-decoration: none;
  transition: color var(--step) var(--ease), background-color var(--step) var(--ease), border-color var(--step) var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--warm);
  border-color: rgba(58, 155, 140, .7);
  background: rgba(18, 60, 99, .7);
}

.page-faq .faq-rail__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
}

.page-faq .faq-rail__name {
  white-space: nowrap;
}

.page-faq .faq-rail__count {
  flex: none;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(169, 196, 217, .72);
}

/* ---------- 问答组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 52px;
  padding-top: 44px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 22px;
}

.page-faq .faq-group__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--celadon);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(22px, 4.6vw, 28px);
  line-height: 1.34;
  letter-spacing: -0.01em;
  color: var(--warm);
}

.page-faq .faq-group__note {
  flex-basis: 100%;
  margin: 0;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  background: var(--ink-archive);
  border: 1px solid transparent;
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--step) var(--ease), box-shadow var(--step) var(--ease);
}

.page-faq .faq-item + .faq-item {
  margin-top: 10px;
}

.page-faq .faq-item[open] {
  border-color: rgba(58, 155, 140, .42);
  box-shadow: inset 3px 0 0 var(--celadon);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 17px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-serif);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--warm);
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__num {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--amber);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__mark {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  margin-left: auto;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 12px;
  height: 1.5px;
  border-radius: 2px;
  background: var(--celadon);
  transform: translate(-50%, -50%);
  transition: transform var(--step) var(--ease), opacity var(--step) var(--ease);
}

.page-faq .faq-item__mark::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

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

.page-faq .faq-item__a {
  padding: 0 18px 20px 48px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
  animation: faqReveal .24s var(--ease);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 44ch;
}

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

@keyframes faqReveal {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-faq .faq-link {
  color: var(--amber);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: rgba(230, 168, 23, .45);
  transition: color var(--step) var(--ease), text-decoration-color var(--step) var(--ease);
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  color: var(--warm);
  text-decoration-color: var(--warm);
}

/* ---------- 账号区配图 ---------- */
.page-faq .faq-figure {
  margin: 28px 0 0;
}

.page-faq .faq-figure__frame {
  aspect-ratio: 3 / 2;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--ink-archive);
}

.page-faq .faq-figure__frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .faq-figure .media-caption {
  margin-top: 10px;
}

/* ---------- 联系条 ---------- */
.page-faq .faq-contact {
  background: var(--warm);
  color: var(--black);
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: 34px;
}

.page-faq .faq-contact__lead .annot {
  display: inline-block;
  margin: 0 0 14px;
  color: var(--ink-index);
}

.page-faq .faq-contact__title {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(24px, 5vw, 36px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--black);
}

.page-faq .faq-contact__lead-text {
  margin: 0 0 26px;
  max-width: 40ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(26, 26, 26, .78);
}

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

.page-faq .faq-contact__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--sand);
}

.page-faq .faq-contact__key {
  flex: none;
  min-width: 84px;
  font-size: 13px;
  letter-spacing: .04em;
  color: rgba(26, 26, 26, .58);
}

.page-faq .faq-contact__val {
  font-family: var(--font-mono);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--black);
  word-break: break-word;
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 599px) {
  .page-faq .faq-hero__stats {
    gap: 12px 20px;
    padding-top: 18px;
  }

  .page-faq .faq-hero__stat b {
    font-size: 20px;
  }

  .page-faq .faq-item__q {
    padding: 15px 16px;
    font-size: 15.5px;
  }

  .page-faq .faq-item__a {
    padding: 0 16px 18px 16px;
  }

  .page-faq .faq-rail__link {
    padding: 8px 12px;
    font-size: 13px;
  }
}

/* ---------- 桌面：左索引栏与问答抽屉分栏 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, .95fr);
    align-items: center;
    gap: 64px;
  }

  .page-faq .faq-hero__figure {
    aspect-ratio: 12 / 5;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-drawer {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 60px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 104px;
    border-left: 1px solid var(--faq-line);
    padding-left: 22px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 4px;
  }

  .page-faq .faq-rail__link {
    border-radius: 8px;
    border-color: transparent;
    padding: 10px 12px;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    background: rgba(18, 60, 99, .75);
    border-color: rgba(58, 155, 140, .5);
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 72px;
    align-items: start;
  }
}