.page-faq {
  --faq-rail-w: 232px;
  --faq-rail-top: 88px;
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* 面包屑与页头 */
.page-faq .breadcrumbs {
  padding-top: clamp(16px, 3vw, 26px);
  font-size: 0.86rem;
  color: var(--fog);
  opacity: 0.78;
}

.page-faq .breadcrumbs a {
  color: var(--mane);
  text-decoration: none;
}

.page-faq .breadcrumbs a:hover {
  color: var(--amber);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-head {
  padding-top: clamp(22px, 4vw, 40px);
  padding-bottom: clamp(22px, 4vw, 36px);
  border-bottom: 2px solid var(--asphalt);
}

.page-faq .faq-head .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .faq-head h1 {
  max-width: 20em;
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.85rem, 6.4vw, 3.6rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-faq .faq-head .page-lede {
  max-width: 44em;
  margin: 18px 0 0;
  font-size: clamp(0.98rem, 2.2vw, 1.08rem);
  line-height: 1.78;
  color: var(--fog);
  opacity: 0.86;
}

/* 首屏四个关键数字 */
.page-faq .faq-stats {
  list-style: none;
  margin: clamp(22px, 4vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--asphalt);
  border: 1px solid var(--asphalt);
}

.page-faq .faq-stats li {
  background: var(--panel);
  padding: 14px 16px 16px;
}

.page-faq .faq-stats b {
  display: block;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.4vw, 2rem);
  line-height: 1.1;
  color: var(--amber);
  padding-bottom: 6px;
  border-bottom: 2px solid rgba(224, 169, 59, 0.45);
}

.page-faq .faq-stats span {
  display: block;
  margin-top: 10px;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--fog);
  opacity: 0.8;
}

/* 左右分置骨架 */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  padding-top: clamp(26px, 4vw, 46px);
}

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

/* 左侧分组栏 */
.page-faq .faq-rail {
  border-top: 2px solid var(--amber);
  padding-top: 12px;
}

.page-faq .rail-title {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-faq .rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .rail-list li {
  flex: 0 0 auto;
}

.page-faq .rail-list a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 13px;
  white-space: nowrap;
  text-decoration: none;
  font-size: 0.9rem;
  color: var(--fog);
  background: var(--panel);
  border-bottom: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .rail-list a:hover,
.page-faq .rail-list a:focus-visible {
  color: var(--mane);
  border-bottom-color: var(--amber);
}

.page-faq .rail-list a:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-faq .rail-num {
  font-family: var(--font-num);
  font-size: 0.76rem;
  color: var(--amber);
}

.page-faq .rail-help {
  margin: 14px 0 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--fog);
  opacity: 0.78;
}

.page-faq .rail-help a {
  color: var(--mane);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .rail-help a:hover {
  color: var(--amber);
}

/* 分组 */
.page-faq .faq-group {
  margin-bottom: clamp(34px, 5vw, 58px);
  scroll-margin-top: var(--faq-rail-top);
}

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

.page-faq .faq-ghead {
  margin-bottom: 16px;
}

/* 问答条 */
.page-faq .qa {
  border-top: 1px solid var(--asphalt);
}

.page-faq .qa:last-of-type {
  border-bottom: 1px solid var(--asphalt);
}

.page-faq .qa-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 0;
  padding: 15px 16px;
  background: var(--panel);
  border-left: 4px solid var(--amber);
  color: var(--fog);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(0.98rem, 2.4vw, 1.08rem);
  line-height: 1.55;
  cursor: pointer;
  list-style: none;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

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

.page-faq .qa-q::marker {
  content: "";
}

.page-faq .qa-q:hover {
  background: #1E3352;
  border-left-color: var(--mane);
}

.page-faq .qa-q:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -2px;
}

.page-faq .qa[open] > .qa-q {
  border-left-color: var(--orange);
}

.page-faq .qa-mark {
  margin-left: auto;
  flex: none;
  font-family: var(--font-num);
  font-size: 1.25rem;
  line-height: 1.35;
  color: var(--amber);
}

.page-faq .qa-mark::before {
  content: "+";
}

.page-faq .qa[open] .qa-mark::before {
  content: "\2212";
}

/* 答案区 */
.page-faq .qa-a {
  padding: 16px 16px 20px 20px;
  border-left: 4px solid var(--asphalt);
  background: rgba(233, 235, 231, 0.04);
  color: var(--fog);
  font-size: 1rem;
  line-height: 1.78;
}

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

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

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

.page-faq .qa-a a:hover {
  color: var(--amber);
}

/* 答案中的大号步骤序号 */
.page-faq .steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 14px 0 14px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-faq .steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 1.7rem;
  line-height: 1;
  color: var(--amber);
  padding-bottom: 3px;
  border-bottom: 2px solid rgba(224, 169, 59, 0.5);
}

/* 内联路径示意 */
.page-faq .faq-route {
  margin: 16px 0 12px;
  padding: 14px 14px 10px;
  background: var(--panel);
  border: 1px solid var(--asphalt);
}

.page-faq .faq-route svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-route figcaption {
  margin-top: 10px;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--fog);
  opacity: 0.72;
}

/* 配图 */
.page-faq .faq-figure {
  margin: 0 0 18px;
}

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

.page-faq .faq-figure .figure__cap {
  font-size: 0.8rem;
}

/* 分组内左右并排 */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-faq .faq-stack {
  min-width: 0;
}

.page-faq .faq-split .faq-figure {
  margin: 0;
}

/* 中等宽度：首屏数字拉成四列 */
@media (min-width: 720px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* 桌面：左窄栏固定，右侧宽栏逐条展开 */
@media (min-width: 980px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: var(--faq-rail-top);
  }

  .page-faq .rail-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .rail-list li {
    flex: 1 1 auto;
  }

  .page-faq .rail-list a {
    display: flex;
    width: 100%;
    border-bottom: 0;
    border-left: 2px solid transparent;
    padding: 10px 12px;
  }

  .page-faq .rail-list a:hover,
  .page-faq .rail-list a:focus-visible {
    border-bottom-color: transparent;
    border-left-color: var(--amber);
  }

  .page-faq .qa-a {
    padding-left: 24px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 34%);
    gap: 24px;
    align-items: start;
  }
}

/* 动效降级 */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-q,
  .page-faq .rail-list a {
    transition: none;
  }
}