.page-faq {
  --faq-cut: 14px;
  --faq-rail-w: 21rem;
  --faq-id-col: 30px;
  --faq-pad-x: 14px;
  --faq-gap: 11px;
  background-color: var(--turf);
  color: var(--line);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-faq .page-faq__crumb {
  padding-top: 22px;
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-faq .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 140ms var(--ease), border-color 140ms var(--ease);
}

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

.page-faq .breadcrumb__sep {
  color: rgba(122, 154, 144, 0.6);
}

.page-faq .breadcrumb__current {
  color: var(--line);
}

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

.page-faq .faq-hero::after {
  content: "";
  display: block;
  height: 1px;
  margin-top: 36px;
  background: linear-gradient(90deg, var(--cyan) 0 68px, var(--hairline) 68px 100%);
}

.page-faq .faq-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--cyan);
}

.page-faq .faq-hero__kicker::before {
  content: "";
  flex: none;
  width: 26px;
  height: 3px;
  background: var(--cyan);
  transform: skewX(-20deg);
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 17em;
  font-size: clamp(32px, 6.4vw, 72px);
  font-weight: 250;
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--white);
  transform: skewX(-1.5deg);
  transform-origin: left center;
}

.page-faq .faq-hero__lead {
  margin: 22px 0 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--line);
  opacity: 0.88;
}

/* ---------- 动线节奏面板 ---------- */
.page-faq .faq-cadence {
  margin-top: 34px;
  border: 1px solid var(--hairline);
  background: var(--hairline);
  clip-path: polygon(
    0 0,
    calc(100% - var(--faq-cut)) 0,
    100% var(--faq-cut),
    100% 100%,
    var(--faq-cut) 100%,
    0 calc(100% - var(--faq-cut))
  );
}

.page-faq .faq-cadence__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin: 0;
  padding: 14px 18px;
  background: var(--turf-2);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--line);
}

.page-faq .faq-cadence__stamp {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-cadence__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
}

.page-faq .faq-cadence__item {
  padding: 18px 18px 20px;
  background: var(--turf-2);
  border-left: 2px solid transparent;
  transition: background 140ms var(--ease), border-color 140ms var(--ease);
}

.page-faq .faq-cadence__item:hover {
  background: var(--turf-3);
  border-left-color: var(--cyan);
}

.page-faq .faq-cadence__time {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 34px;
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-faq .faq-cadence__time em {
  font-style: normal;
  margin-left: 5px;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .faq-cadence__label {
  display: block;
  margin-top: 11px;
  max-width: 28em;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  padding-top: 40px;
  padding-bottom: 72px;
}

.page-faq .faq-rail {
  display: grid;
  gap: 26px;
  align-content: start;
  min-width: 0;
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index {
  position: relative;
  padding: 22px 16px 24px;
  background: var(--turf-2);
  clip-path: polygon(
    0 0,
    calc(100% - var(--faq-cut)) 0,
    100% var(--faq-cut),
    100% 100%,
    var(--faq-cut) 100%,
    0 calc(100% - var(--faq-cut))
  );
}

.page-faq .faq-index::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(150deg, rgba(62, 242, 200, 0.1), rgba(62, 242, 200, 0) 58%);
  pointer-events: none;
}

.page-faq .faq-index__title {
  position: relative;
  margin: 0;
  color: var(--cyan);
}

.page-faq .faq-index__list {
  position: relative;
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--hairline);
}

.page-faq .faq-index__item {
  background: var(--turf-2);
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 10px;
  padding: 11px 11px 11px 12px;
  border-left: 2px solid transparent;
  text-decoration: none;
  color: var(--line);
  font-size: 14px;
  line-height: 1.45;
  transition: background 140ms var(--ease), border-color 140ms var(--ease), color 140ms var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--muted);
  transition: color 140ms var(--ease);
}

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

.page-faq .faq-index__count {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  white-space: nowrap;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--turf-3);
  border-left-color: var(--cyan);
  color: var(--white);
}

.page-faq .faq-index__link:hover .faq-index__num,
.page-faq .faq-index__link:focus-visible .faq-index__num,
.page-faq .faq-index__link[data-active="true"] .faq-index__num {
  color: var(--cyan);
}

.page-faq .faq-index__link[data-active="true"] {
  background: var(--turf-3);
  border-left-color: var(--cyan);
  color: var(--white);
}

/* ---------- 侧栏示意图 ---------- */
.page-faq .faq-rail__figure {
  margin: 0;
  padding-top: 18px;
  border-top: 1px solid var(--hairline);
}

.page-faq .faq-rail__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  background: var(--turf-3);
  clip-path: polygon(
    0 0,
    calc(100% - var(--faq-cut)) 0,
    100% var(--faq-cut),
    100% 100%,
    var(--faq-cut) 100%,
    0 calc(100% - var(--faq-cut))
  );
}

.page-faq .faq-rail__figure figcaption {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.62;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-stream {
  display: grid;
  gap: 48px;
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: 124px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num title"
    "num lead";
  column-gap: 14px;
  align-items: start;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--hairline-strong);
}

.page-faq .faq-group__num {
  grid-area: num;
  margin: 0;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 34px;
  font-weight: 200;
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--cyan);
  opacity: 0.4;
}

.page-faq .faq-group__title {
  grid-area: title;
  margin: 0;
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-group__lead {
  grid-area: lead;
  margin: 10px 0 0;
  max-width: 44em;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .faq-group__top {
  display: none;
  grid-area: top;
  align-self: start;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 1px solid transparent;
  transition: color 140ms var(--ease), border-color 140ms var(--ease);
}

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

.page-faq .faq-group__list {
  margin: 0;
  padding: 0;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-q {
  border-bottom: 1px solid var(--hairline);
  border-left: 2px solid transparent;
  transition: background 160ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .faq-q:hover {
  background: rgba(19, 46, 38, 0.62);
  border-left-color: var(--cyan);
}

.page-faq .faq-q[open] {
  background: rgba(19, 46, 38, 0.78);
  border-left-color: var(--cyan);
}

.page-faq .faq-q__summary {
  display: grid;
  grid-template-columns: var(--faq-id-col) minmax(0, 1fr) 16px;
  align-items: start;
  gap: var(--faq-gap);
  padding: 17px var(--faq-pad-x);
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--line);
  transition: color 140ms var(--ease);
}

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

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

.page-faq .faq-q__summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-q__id {
  padding-top: 3px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--muted);
  white-space: nowrap;
  transition: color 140ms var(--ease);
}

.page-faq .faq-q:hover .faq-q__id,
.page-faq .faq-q[open] .faq-q__id {
  color: var(--cyan);
}

.page-faq .faq-q__text {
  display: block;
  min-width: 0;
}

.page-faq .faq-q[open] .faq-q__text {
  color: var(--white);
}

.page-faq .faq-q__marker {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 4px;
}

.page-faq .faq-q__marker::before,
.page-faq .faq-q__marker::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 160ms var(--ease), opacity 160ms var(--ease);
}

.page-faq .faq-q__marker::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 1.5px;
}

.page-faq .faq-q__marker::after {
  top: 0;
  left: 6px;
  width: 1.5px;
  height: 14px;
}

.page-faq .faq-q[open] .faq-q__marker::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-q__body {
  padding: 0 var(--faq-pad-x) 22px calc(var(--faq-pad-x) + var(--faq-id-col) + var(--faq-gap));
  animation: faqBodyIn 160ms var(--ease) both;
}

@keyframes faqBodyIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.page-faq .faq-q__body p {
  margin: 0 0 0.85em;
  max-width: 38em;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--line);
}

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

.page-faq .faq-q__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(62, 242, 200, 0.45);
  transition: border-color 140ms var(--ease);
}

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

/* ---------- 转场图 ---------- */
.page-faq .faq-transition {
  margin: 0;
}

.page-faq .faq-transition img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  background: var(--turf-3);
  clip-path: polygon(
    0 0,
    calc(100% - var(--faq-cut)) 0,
    100% var(--faq-cut),
    100% 100%,
    var(--faq-cut) 100%,
    0 calc(100% - var(--faq-cut))
  );
}

/* ---------- 收尾 ---------- */
.page-faq .faq-closing {
  padding: 30px 22px 34px;
  background: linear-gradient(155deg, var(--turf-2) 0%, var(--turf) 100%);
  border-left: 2px solid var(--orange);
  clip-path: polygon(
    0 0,
    calc(100% - var(--faq-cut)) 0,
    100% var(--faq-cut),
    100% 100%,
    var(--faq-cut) 100%,
    0 calc(100% - var(--faq-cut))
  );
}

.page-faq .faq-closing__kicker {
  margin: 0 0 12px;
  color: var(--orange);
}

.page-faq .faq-closing__title {
  margin: 0;
  max-width: 22em;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 300;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-closing__lead {
  margin: 14px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--line);
}

.page-faq .faq-closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-cadence__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-group__head {
    grid-template-columns: auto minmax(0, 1fr) auto;
    grid-template-areas:
      "num title top"
      "num lead lead";
  }

  .page-faq .faq-group__top {
    display: inline-block;
  }
}

@media (min-width: 960px) {
  .page-faq {
    --faq-id-col: 34px;
    --faq-pad-x: 18px;
    --faq-gap: 14px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 64px;
    align-items: start;
    padding-bottom: 96px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 112px;
  }

  .page-faq .faq-group__num {
    font-size: 54px;
  }

  .page-faq .faq-group__list {
    margin-top: 4px;
  }

  .page-faq .faq-q__summary {
    font-size: 16px;
    padding-top: 19px;
    padding-bottom: 19px;
  }

  .page-faq .faq-q__body p {
    font-size: 15px;
  }

  .page-faq .faq-closing {
    padding: 38px 36px 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q__body {
    animation: none;
  }

  .page-faq .faq-q__marker::before,
  .page-faq .faq-q__marker::after,
  .page-faq .faq-q,
  .page-faq .faq-cadence__item,
  .page-faq .faq-index__link {
    transition: none;
  }
}