.page-faq {
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
  padding-bottom: clamp(48px, 8vw, 104px);
}

.page-faq .breadcrumbs {
  padding-top: clamp(18px, 3.5vw, 32px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(20px, 4vw, 44px);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(24px, 4vw, 42px);
  align-items: end;
}

.page-faq .faq-hero__text h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 6vw, 62px);
  line-height: 1.06;
  letter-spacing: .005em;
  margin: 12px 0 0;
  color: var(--paper);
  max-width: 20ch;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.55vw, 17px);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  border: var(--rule) solid var(--line);
  box-shadow: var(--shadow-hard);
  background: var(--ink-2);
}

.page-faq .faq-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(27, 31, 75, .58), rgba(6, 28, 24, .78));
  pointer-events: none;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 3;
  object-fit: cover;
}

.page-faq .faq-hero__figure figcaption {
  position: relative;
  z-index: 1;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  }
}

/* ---------- 三条高频问题 ---------- */
.page-faq .faq-quick {
  margin-top: clamp(36px, 6vw, 68px);
}

.page-faq .faq-quick__title {
  font-family: var(--font-display);
  font-size: clamp(16px, 2.1vw, 22px);
  letter-spacing: .16em;
  color: var(--cyan);
  margin: 0 0 16px;
}

.page-faq .faq-quick__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  border-top: var(--rule) solid var(--line);
}

.page-faq .faq-quick__list > li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 6px;
  align-items: baseline;
  padding: 18px 0 20px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-quick__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-faq .faq-quick__q {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-quick__a {
  grid-column: 2;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 58ch;
}

.page-faq .faq-quick__jump {
  grid-column: 2;
  justify-self: start;
  margin-top: 4px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 201, .38);
  padding-bottom: 1px;
}

.page-faq .faq-quick__jump:hover,
.page-faq .faq-quick__jump:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--cyan);
}

@media (min-width: 880px) {
  .page-faq .faq-quick__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-quick__list > li {
    border-bottom: none;
    border-top: var(--rule) solid var(--line);
    border-right: 1px solid var(--line);
    padding: 20px 24px 24px 0;
    align-content: start;
  }
  .page-faq .faq-quick__list > li:last-child {
    border-right: none;
    padding-right: 0;
  }
}

/* ---------- 主体：分组 + 竖向导轨 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  margin-top: clamp(44px, 7vw, 92px);
}

.page-faq .faq-groups {
  display: grid;
  gap: clamp(40px, 6vw, 72px);
  min-width: 0;
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: var(--rule) solid var(--line);
  margin-bottom: 4px;
}

.page-faq .faq-group__num {
  font-family: var(--font-display);
  font-size: clamp(28px, 4.4vw, 48px);
  line-height: .9;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: .02em;
  flex: 0 0 auto;
}

.page-faq .faq-group__head h2 {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.6vw, 28px);
  line-height: 1.25;
  margin: 0;
  color: var(--paper);
}

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

.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--cyan);
  opacity: 0;
  transition: opacity .22s var(--ease);
}

.page-faq .faq-item[open]::before {
  opacity: 1;
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 4px 18px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(15px, 1.85vw, 19px);
  line-height: 1.5;
  color: var(--paper);
  transition: color .2s var(--ease), padding-left .2s var(--ease);
}

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

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__q {
  color: var(--cyan);
  padding-left: 18px;
}

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 4px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--cyan);
  transform: translate(-50%, -50%);
  transition: transform .24s var(--ease), background .2s var(--ease);
}

.page-faq .faq-item__mark::before {
  width: 16px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  width: 2px;
  height: 16px;
}

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

.page-faq .faq-item__a {
  padding: 0 4px 22px 18px;
  max-width: 68ch;
  animation: faq-panel-in .26s var(--ease) both;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 201, .38);
}

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

.page-faq .faq-item__a .data-num {
  color: var(--paper);
  background: rgba(53, 242, 201, .1);
  padding: 1px 6px;
  border-bottom: 1px solid rgba(53, 242, 201, .3);
}

@keyframes faq-panel-in {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 检索章节配图 ---------- */
.page-faq .faq-figure {
  margin: 26px 0 0;
  border: var(--rule) solid var(--line);
  background: var(--ink-2);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  color: var(--mist);
}

@media (min-width: 760px) {
  .page-faq .faq-figure {
    max-width: 44%;
    margin-left: auto;
  }
}

/* ---------- 右侧竖向刻度 ---------- */
.page-faq .faq-rail {
  order: -1;
  min-width: 0;
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
}

.page-faq .faq-rail__list > li {
  flex: 0 0 auto;
}

.page-faq .faq-rail__list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  border: 2px solid var(--line);
  color: var(--mist);
  text-decoration: none;
  font-size: 13px;
  line-height: 1.2;
  white-space: nowrap;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

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

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--orange);
}

.page-faq .faq-rail__list a:hover .faq-rail__num,
.page-faq .faq-rail__list a:focus-visible .faq-rail__num {
  color: var(--cyan);
}

@media (min-width: 1080px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr) 188px;
    align-items: start;
  }

  .page-faq .faq-rail {
    order: 0;
    position: sticky;
    top: 118px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
    border-left: var(--rule) solid var(--line);
  }

  .page-faq .faq-rail__list a {
    position: relative;
    border: none;
    padding: 11px 0 11px 20px;
    background: none;
    white-space: normal;
  }

  .page-faq .faq-rail__list a::before {
    content: "";
    position: absolute;
    left: -3px;
    top: 50%;
    width: 13px;
    height: 3px;
    background: var(--line);
    transform: translateY(-50%);
    transition: background .2s var(--ease), width .2s var(--ease);
  }

  .page-faq .faq-rail__list a:hover::before,
  .page-faq .faq-rail__list a:focus-visible::before {
    background: var(--cyan);
    width: 18px;
  }
}

/* ---------- 底部引导 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(52px, 8vw, 100px);
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: 14px;
  padding: clamp(24px, 4vw, 48px);
  border: var(--rule) solid var(--line);
  background: var(--ink-2);
  box-shadow: var(--shadow-cyan);
}

.page-faq .faq-cta h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 3vw, 32px);
  line-height: 1.2;
  color: var(--paper);
  max-width: 26ch;
}

.page-faq .faq-cta p {
  margin: 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

@media (max-width: 520px) {
  .page-faq .faq-item__q {
    padding-left: 12px;
  }
  .page-faq .faq-item[open] .faq-item__q,
  .page-faq .faq-item__a {
    padding-left: 14px;
  }
}