.page-faq {
  --faq-index-w: 236px;
  --faq-hair: rgba(233, 196, 60, .22);
  --faq-hair-strong: rgba(233, 196, 60, .42);
  --faq-hair-cyan: rgba(56, 240, 190, .34);
  --faq-dim: rgba(237, 243, 238, .76);
  --faq-dim-2: rgba(237, 243, 238, .58);
  display: block;
  overflow-x: clip;
}

/* —— 首屏 —— */
.page-faq .faq-intro {
  position: relative;
  padding: 36px 0 6px;
}

.page-faq .faq-intro::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 380px;
  background:
    radial-gradient(120% 90% at 10% 0%, rgba(56, 240, 190, .10), transparent 62%),
    radial-gradient(90% 70% at 92% 6%, rgba(233, 196, 60, .07), transparent 66%);
  pointer-events: none;
}

.page-faq .faq-intro .container {
  position: relative;
}

.page-faq .breadcrumb {
  margin-bottom: 22px;
}

.page-faq .faq-intro__label {
  color: var(--referee-yellow);
  margin: 0;
}

.page-faq .faq-intro__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(27px, 5.4vw, 50px);
  line-height: 1.22;
  letter-spacing: -0.012em;
  color: var(--paper);
  margin: 14px 0 0;
  max-width: 22ch;
}

.page-faq .faq-intro__lede {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-dim);
  max-width: 60ch;
  margin: 20px 0 0;
}

.page-faq .faq-intro__media {
  position: relative;
  margin: 34px 0 0;
  border: 1px solid var(--faq-hair);
  overflow: hidden;
  background: var(--ink-2);
}

.page-faq .faq-intro__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 2 / 1;
  filter: saturate(.85) brightness(.82);
}

.page-faq .faq-intro__media .media__layer {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 31, 24, .72) 0%, rgba(10, 31, 24, .12) 52%, rgba(10, 31, 24, .62) 100%),
    repeating-linear-gradient(90deg, rgba(56, 240, 190, .07) 0 1px, transparent 1px 72px);
  pointer-events: none;
}

/* —— 主体双列 —— */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  padding-top: 44px;
  padding-bottom: 20px;
}

/* 分类索引 */
.page-faq .faq-index {
  align-self: start;
  min-width: 0;
}

.page-faq .faq-index__label {
  color: var(--muted);
  margin: 0;
}

.page-faq .faq-index__list {
  list-style: none;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  margin: 14px 0 0;
  padding: 0 0 8px;
  scrollbar-width: thin;
}

.page-faq .faq-index__list > li {
  flex: 0 0 auto;
  min-width: 0;
}

.page-faq .faq-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--faq-hair);
  border-left: 2px solid var(--signal-cyan);
  background: var(--ink-2);
  color: var(--paper);
  font-family: var(--font-head);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .08em;
  color: var(--referee-yellow);
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
}

.page-faq .faq-index__foot {
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
  margin: 14px 0 0;
}

.page-faq .faq-index__foot a {
  color: var(--signal-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-hair-cyan);
}

/* 问答组 */
.page-faq .faq-list {
  min-width: 0;
}

.page-faq .faq-group {
  margin-top: 48px;
  scroll-margin-top: 112px;
}

.page-faq .faq-group:first-child {
  margin-top: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  align-items: baseline;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--faq-hair-strong);
}

.page-faq .faq-group__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 24px;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--referee-yellow);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.3;
  color: var(--paper);
  margin: 0;
}

.page-faq .faq-group__note {
  grid-column: 2;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
  margin: 6px 0 0;
}

/* —— 问答条目 —— */
.page-faq .qa {
  border-bottom: 1px solid var(--faq-hair);
  background: transparent;
  transition: background var(--dur) var(--ease);
}

.page-faq .qa[open] {
  background: linear-gradient(180deg, rgba(16, 41, 31, .82), rgba(10, 31, 24, 0));
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 14px 18px 14px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: 16px;
  line-height: 1.62;
  color: var(--paper);
  border-left: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.page-faq .qa__q:hover {
  border-left-color: var(--faq-hair-cyan);
}

.page-faq .qa[open] > .qa__q {
  border-left-color: var(--signal-cyan);
}

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

.page-faq .qa__mark {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1.5px;
  background: var(--signal-cyan);
  transform: translateY(-50%);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .qa__mark::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .qa[open] .qa__mark::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: .5;
}

.page-faq .qa__a {
  padding: 0 14px 22px 16px;
  max-width: 68ch;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.9;
  color: var(--faq-dim);
}

.page-faq .qa__a p {
  margin: 0 0 12px;
}

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

.page-faq .qa__a a {
  color: var(--signal-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-hair-cyan);
}

.page-faq .qa__steps {
  list-style: none;
  counter-reset: faqstep;
  display: grid;
  gap: 10px;
  margin: 14px 0 16px;
  padding: 0;
}

.page-faq .qa__steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.page-faq .qa__steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 2.4;
  color: var(--referee-yellow);
  letter-spacing: .04em;
}

.page-faq .faq-group__media {
  position: relative;
  margin: 26px 0 0;
  border: 1px solid var(--faq-hair);
  overflow: hidden;
  background: var(--ink-2);
  max-width: 520px;
}

.page-faq .faq-group__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.85) brightness(.88);
}

/* —— 页尾信息带 —— */
.page-faq .faq-cta {
  margin-top: 64px;
  background: linear-gradient(180deg, var(--ink-2) 0%, var(--ink-deep) 100%);
  border-top: 1px solid var(--faq-hair-strong);
  border-bottom: 1px solid var(--hair-yellow, rgba(233, 196, 60, .26));
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: 24px;
  padding-top: 40px;
  padding-bottom: 44px;
}

.page-faq .faq-cta__copy .index-label {
  color: var(--referee-yellow);
  margin: 0;
}

.page-faq .faq-cta__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(21px, 3vw, 31px);
  line-height: 1.28;
  color: var(--paper);
  margin: 10px 0 0;
}

.page-faq .faq-cta__text {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.85;
  color: var(--faq-dim);
  max-width: 56ch;
  margin: 12px 0 0;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

/* —— 平板及以上 —— */
@media (min-width: 641px) {
  .page-faq .faq-intro {
    padding-top: 48px;
  }

  .page-faq .qa__q {
    padding: 20px 18px 20px 16px;
    font-size: 17px;
  }

  .page-faq .qa__a {
    padding: 0 18px 24px 18px;
  }
}

/* —— 桌面双列 —— */
@media (min-width: 901px) {
  .page-faq .faq-intro {
    padding-top: 56px;
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 64px;
    padding-top: 64px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
    border-top: 2px solid var(--signal-cyan);
    padding-top: 16px;
  }

  .page-faq .faq-index__list {
    display: grid;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    margin-top: 16px;
    border-bottom: 1px solid var(--faq-hair);
  }

  .page-faq .faq-index__list > li {
    border-bottom: 1px solid var(--faq-hair);
  }

  .page-faq .faq-index__list > li:last-child {
    border-bottom: 0;
  }

  .page-faq .faq-index__list a {
    display: flex;
    align-items: baseline;
    justify-content: flex-start;
    width: 100%;
    padding: 11px 12px;
    border: 0;
    border-left: 2px solid var(--grid);
    background: transparent;
    white-space: normal;
    font-size: 14px;
    box-sizing: border-box;
  }

  .page-faq .faq-index__list a:hover {
    border-left-color: var(--signal-cyan);
    background: var(--ink-2);
  }

  .page-faq .faq-index__name {
    flex: 1 1 auto;
  }

  .page-faq .faq-index__count {
    flex: 0 0 auto;
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 48px;
    padding-top: 46px;
    padding-bottom: 50px;
  }

  .page-faq .faq-cta__actions {
    flex-wrap: nowrap;
  }
}

/* —— 大屏 —— */
@media (min-width: 1281px) {
  .page-faq {
    --faq-index-w: 268px;
  }

  .page-faq .faq-intro__media .media__img {
    aspect-ratio: 1200 / 520;
  }
}

/* —— 动效降级 —— */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .qa,
  .page-faq .qa__q,
  .page-faq .faq-index__list a {
    transition: none;
  }
}