.page-faq {
  --faq-tile-r: 28px 10px 28px 10px;
  --faq-rule: rgba(147, 166, 190, .18);
  --faq-group-accent: var(--jade);
  --faq-group-wash: rgba(23, 185, 138, .13);
  --faq-group-line: rgba(23, 185, 138, .32);
  padding-bottom: 4.5rem;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .45rem;
  padding-top: 1.5rem;
  font-size: .82rem;
  color: var(--mist);
}

.page-faq .crumbs a {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

.page-faq .crumbs a:hover,
.page-faq .crumbs a:focus-visible {
  color: var(--jade-soft);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 2.2rem 0 3rem;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -20%;
  width: 44rem;
  height: 44rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(23, 185, 138, .17), rgba(23, 185, 138, 0) 62%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -24%;
  bottom: -58%;
  width: 38rem;
  height: 38rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 92, 255, .14), rgba(124, 92, 255, 0) 62%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2.2rem;
}

.page-faq .faq-hero h1 {
  margin: .9rem 0 1.1rem;
  font-size: clamp(1.85rem, 5.6vw, 3.1rem);
  font-weight: 900;
  letter-spacing: .04em;
  line-height: 1.22;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  max-width: 60ch;
  color: var(--mist);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.6rem;
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  overflow: hidden;
  align-self: start;
}

.page-faq .faq-stat {
  background: linear-gradient(158deg, var(--ink-800), var(--ink-900));
  padding: 1.05rem 1rem 1.15rem;
}

.page-faq .faq-stat__num {
  display: block;
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--jade-soft);
}

.page-faq .faq-stat:nth-child(2) .faq-stat__num { color: var(--violet-soft); }
.page-faq .faq-stat:nth-child(3) .faq-stat__num { color: var(--gold); }
.page-faq .faq-stat:nth-child(4) .faq-stat__num { color: var(--paper); }

.page-faq .faq-stat__label {
  display: block;
  margin-top: .38rem;
  font-size: .78rem;
  letter-spacing: .05em;
  line-height: 1.5;
  color: var(--mist);
}

/* ---------- 四组索引 ---------- */
.page-faq .faq-index {
  padding: 2.4rem 0 .8rem;
}

.page-faq .faq-index__head {
  display: flex;
  flex-direction: column;
  gap: .45rem;
  margin-bottom: 1.6rem;
}

.page-faq .faq-index__head h2 {
  margin: 0;
  font-size: clamp(1.35rem, 3.6vw, 1.95rem);
  font-weight: 900;
  letter-spacing: .04em;
  color: var(--paper);
}

.page-faq .faq-index__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: .9rem;
}

.page-faq .faq-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  min-height: 10.5rem;
  padding: 1.35rem 1.25rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--faq-tile-r);
  background: linear-gradient(158deg, var(--ink-800), var(--ink-900) 76%);
  color: var(--paper);
  text-decoration: none;
  overflow: hidden;
  transition: transform var(--t-mid) var(--ease),
              border-color var(--t-mid) var(--ease);
}

.page-faq .faq-tile::before {
  content: "";
  position: absolute;
  right: -3.6rem;
  bottom: -4.6rem;
  width: 10rem;
  height: 10rem;
  border-radius: 50%;
  background: var(--tile-accent);
  opacity: .14;
  filter: blur(16px);
  transition: opacity var(--t-mid) var(--ease);
}

.page-faq .faq-tile::after {
  content: "";
  position: absolute;
  left: 1.25rem;
  bottom: 0;
  width: 3.4rem;
  height: 2px;
  background: var(--tile-accent);
  opacity: .6;
}

.page-faq .faq-tile:hover,
.page-faq .faq-tile:focus-visible {
  transform: translateY(-4px);
  border-color: var(--tile-accent);
  outline: none;
}

.page-faq .faq-tile:hover::before { opacity: .24; }

.page-faq .faq-tile:focus-visible {
  outline: 2px solid var(--tile-accent);
  outline-offset: 3px;
}

.page-faq .faq-tile--jade { --tile-accent: var(--jade); }
.page-faq .faq-tile--violet { --tile-accent: var(--violet); }
.page-faq .faq-tile--gold { --tile-accent: var(--gold); }
.page-faq .faq-tile--mint { --tile-accent: var(--jade-soft); }

.page-faq .faq-tile__no {
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--tile-accent);
}

.page-faq .faq-tile__name {
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--paper);
}

.page-faq .faq-tile__desc {
  flex: 1;
  font-size: .84rem;
  line-height: 1.68;
  color: var(--mist);
}

.page-faq .faq-tile__count {
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--mist);
}

/* ---------- 分组通用 ---------- */
.page-faq .faq-group {
  position: relative;
  padding: 3.2rem 0 2.4rem;
  scroll-margin-top: 5.5rem;
  border-top: 1px solid var(--line);
  --group-accent: var(--faq-group-accent);
  --group-wash: var(--faq-group-wash);
  --group-line: var(--faq-group-line);
}

.page-faq .faq-group--jade {
  --group-accent: var(--jade);
  --group-wash: rgba(23, 185, 138, .13);
  --group-line: rgba(23, 185, 138, .32);
}

.page-faq .faq-group--violet {
  --group-accent: var(--violet);
  --group-wash: rgba(124, 92, 255, .14);
  --group-line: rgba(124, 92, 255, .34);
}

.page-faq .faq-group--gold {
  --group-accent: var(--gold);
  --group-wash: rgba(216, 169, 74, .14);
  --group-line: rgba(216, 169, 74, .34);
}

.page-faq .faq-group--mint {
  --group-accent: var(--jade-soft);
  --group-wash: rgba(111, 227, 192, .12);
  --group-line: rgba(111, 227, 192, .3);
}

.page-faq .faq-group__head {
  max-width: 66ch;
  margin-bottom: 1.7rem;
}

.page-faq .faq-group__no {
  display: inline-block;
  padding: .28rem .62rem;
  border-radius: 7px;
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--group-accent);
  background: var(--group-wash);
  border: 1px solid var(--group-line);
}

.page-faq .faq-group__head h2 {
  margin: .85rem 0 .55rem;
  font-size: clamp(1.45rem, 3.8vw, 2rem);
  font-weight: 900;
  letter-spacing: .04em;
  color: var(--paper);
}

.page-faq .faq-group__head p {
  margin: 0;
  font-size: .95rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-group__media {
  margin: 0 0 1.6rem;
}

/* ---------- 问答手风琴 ---------- */
.page-faq .qa {
  border-top: 1px solid var(--faq-rule);
}

.page-faq .qa__item {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .qa__item > summary {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr) 1.25rem;
  gap: .7rem;
  align-items: start;
  padding: 1.1rem .1rem;
  list-style: none;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease);
}

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

.page-faq .qa__item > summary:hover {
  background: rgba(147, 166, 190, .05);
}

.page-faq .qa__item > summary:focus-visible {
  outline: 2px solid var(--group-accent);
  outline-offset: 2px;
}

.page-faq .qa__no {
  padding-top: .2rem;
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--group-accent);
}

.page-faq .qa__q {
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.62;
  color: var(--paper);
  transition: color var(--t-fast) var(--ease);
}

.page-faq .qa__mark {
  position: relative;
  justify-self: end;
  width: 1.1rem;
  height: 1.1rem;
  margin-top: .32rem;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--mist);
  transform: translate(-50%, -50%);
  transition: transform var(--t-mid) var(--ease), background var(--t-fast) var(--ease);
}

.page-faq .qa__mark::before { width: .85rem; height: 1.5px; }
.page-faq .qa__mark::after { width: 1.5px; height: .85rem; }

.page-faq .qa__item[open] .qa__mark::before { background: var(--group-accent); }
.page-faq .qa__item[open] .qa__mark::after { transform: translate(-50%, -50%) scaleY(0); }
.page-faq .qa__item[open] > summary .qa__q { color: var(--group-accent); }

.page-faq .qa__body {
  padding: 0 1rem 1.3rem 3.1rem;
}

.page-faq .qa__body p {
  margin: 0;
  max-width: 62ch;
  font-size: .92rem;
  line-height: 1.86;
  color: var(--mist);
}

.page-faq .qa__item[open] > .qa__body {
  animation: faq-open var(--t-slow) var(--ease) both;
}

@keyframes faq-open {
  from { opacity: 0; transform: translateY(-.4rem); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 换别时间轴 ---------- */
.page-faq .shiftline {
  display: grid;
  grid-template-columns: 1fr;
  gap: .9rem;
  margin: 0 0 2rem;
  padding: 0;
  list-style: none;
}

.page-faq .shiftline__node {
  position: relative;
  padding: 1rem 1.05rem 1.05rem 1.5rem;
  border: 1px solid var(--line);
  border-radius: 18px 7px 18px 7px;
  background: linear-gradient(160deg, rgba(20, 38, 63, .78), rgba(10, 21, 36, .68));
}

.page-faq .shiftline__node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.15rem;
  bottom: 1.15rem;
  width: 3px;
  border-radius: 3px;
  background: var(--group-accent);
  opacity: .75;
}

.page-faq .shiftline__no {
  font-size: .68rem;
  letter-spacing: .18em;
  color: var(--group-accent);
}

.page-faq .shiftline__label {
  display: block;
  margin: .38rem 0 .4rem;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--paper);
}

.page-faq .shiftline__note {
  display: block;
  font-size: .84rem;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 返水可视区 ---------- */
.page-faq .rebate-visual {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.3rem;
  margin-bottom: 2rem;
}

.page-faq .tier-ladder {
  margin: 0;
  padding: 1.1rem 1.15rem 1rem;
  list-style: none;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: linear-gradient(160deg, rgba(216, 169, 74, .07), rgba(10, 21, 36, .62));
}

.page-faq .tier-ladder__row {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr) 2.9rem;
  align-items: center;
  gap: .75rem;
  padding: .55rem 0;
}

.page-faq .tier-ladder__row + .tier-ladder__row {
  border-top: 1px dashed var(--line);
}

.page-faq .tier-ladder__no {
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-faq .tier-ladder__track {
  height: 9px;
  border-radius: 6px;
  background: rgba(147, 166, 190, .12);
  overflow: hidden;
}

.page-faq .tier-ladder__track i {
  display: block;
  height: 100%;
  border-radius: 6px;
  background: linear-gradient(90deg, rgba(216, 169, 74, .55), var(--gold));
}

.page-faq .tier-ladder__row:nth-child(1) .tier-ladder__track i { width: 30%; }
.page-faq .tier-ladder__row:nth-child(2) .tier-ladder__track i { width: 43%; }
.page-faq .tier-ladder__row:nth-child(3) .tier-ladder__track i { width: 56%; }
.page-faq .tier-ladder__row:nth-child(4) .tier-ladder__track i { width: 69%; }
.page-faq .tier-ladder__row:nth-child(5) .tier-ladder__track i { width: 83%; }
.page-faq .tier-ladder__row:nth-child(6) .tier-ladder__track i { width: 96%; }

.page-faq .tier-ladder__name {
  font-size: .78rem;
  text-align: right;
  color: var(--mist);
}

.page-faq .rebate-visual__figure {
  margin: 0;
}

/* ---------- 班次结构 ---------- */
.page-faq .rota {
  display: flex;
  flex-direction: column;
  gap: .55rem;
  margin: 0 0 2rem;
  padding: 0;
  list-style: none;
}

.page-faq .rota__seg {
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 16px 7px 16px 7px;
  background: linear-gradient(160deg, rgba(20, 38, 63, .72), rgba(10, 21, 36, .6));
}

.page-faq .rota__label {
  display: block;
  margin-bottom: .35rem;
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--group-accent);
}

.page-faq .rota__note {
  display: block;
  font-size: .86rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .rota__handover {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: .6rem;
  border: 1px dashed var(--line-strong);
  border-radius: 10px;
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--mist);
}

/* ---------- 人工协助 ---------- */
.page-faq .assist {
  display: grid;
  gap: 1.3rem;
  margin-top: 2.2rem;
  padding: 1.6rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--r-l);
  background: linear-gradient(150deg, rgba(23, 185, 138, .1), rgba(10, 21, 36, .86) 62%);
}

.page-faq .assist__text h3 {
  margin: .8rem 0 .6rem;
  font-size: clamp(1.1rem, 2.8vw, 1.4rem);
  font-weight: 900;
  letter-spacing: .04em;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .assist__text p {
  margin: 0;
  max-width: 60ch;
  font-size: .92rem;
  line-height: 1.84;
  color: var(--mist);
}

.page-faq .assist__links {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-stat__num {
    font-size: 1.15rem;
  }

  .page-faq .faq-stat__label {
    font-size: .72rem;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-index__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.1rem;
  }

  .page-faq .shiftline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
  }

  .page-faq .rota {
    flex-direction: row;
    align-items: stretch;
  }

  .page-faq .rota__seg {
    flex: 1;
  }

  .page-faq .rota__handover {
    flex: 0 0 auto;
    width: 5.5rem;
  }

  .page-faq .assist {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 2rem;
    padding: 1.9rem 1.8rem;
  }

  .page-faq .assist__links {
    justify-content: flex-end;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-hero {
    padding: 3rem 0 3.6rem;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 3.2rem;
    align-items: center;
  }

  .page-faq .faq-stat__num {
    font-size: 1.35rem;
  }

  .page-faq .faq-stat__label {
    font-size: .76rem;
  }

  .page-faq .qa__item > summary {
    padding: 1.25rem .2rem;
    grid-template-columns: 3.2rem minmax(0, 1fr) 1.35rem;
    gap: 1rem;
  }

  .page-faq .qa__q {
    font-size: 1.05rem;
  }

  .page-faq .qa__body {
    padding: 0 3rem 1.5rem 4.4rem;
  }

  .page-faq .rebate-visual {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 2rem;
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-index__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-tile {
    min-height: 12rem;
  }

  .page-faq .faq-group {
    padding: 4.2rem 0 3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tile,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after {
    transition: none;
  }

  .page-faq .faq-tile:hover {
    transform: none;
  }

  .page-faq .qa__item[open] > .qa__body {
    animation: none;
  }
}