.page-faq {
  --faq-rule: rgba(143, 163, 155, .26);
  --faq-body: rgba(242, 245, 241, .86);
  --faq-pad: clamp(16px, 3vw, 26px);
  --faq-gap: clamp(22px, 4vw, 44px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 6vw, 58px) 0 clamp(26px, 5vw, 50px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(90% 120% at 92% -10%, rgba(53, 224, 208, .12), transparent 62%),
    radial-gradient(70% 100% at 0% 100%, rgba(228, 179, 60, .08), transparent 60%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .32;
  background-image:
    linear-gradient(rgba(30, 58, 56, .55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 58, 56, .55) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(80% 80% at 72% 18%, #000, transparent 76%);
  mask-image: radial-gradient(80% 80% at 72% 18%, #000, transparent 76%);
}

.page-faq .faq-hero .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

.page-faq .faq-hero__lead h1 {
  margin: 14px 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7.2vw, 58px);
  line-height: 1.06;
  letter-spacing: .015em;
  color: var(--paper);
}

.page-faq .faq-hero__lead .lead {
  max-width: 42em;
  margin: 0 0 24px;
  color: var(--faq-body);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 分类速览卡 */
.page-faq .faq-index {
  align-self: start;
  padding: 18px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold);
  background: linear-gradient(180deg, rgba(20, 50, 41, .92), rgba(18, 21, 26, .92));
  box-shadow: 0 18px 40px -28px rgba(0, 0, 0, .9);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--faq-rule);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold-soft);
}

.page-faq .faq-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 8px;
  border-bottom: 1px dashed rgba(143, 163, 155, .18);
  color: var(--paper);
  font-size: 15px;
  text-decoration: none;
  transition: background .2s var(--ease), padding-left .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  padding-left: 14px;
  background: rgba(76, 141, 255, .12);
  color: var(--gold-soft);
}

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

/* ---------- 筛选带 ---------- */
.page-faq .faq-finder {
  padding: clamp(28px, 5vw, 52px) 0 clamp(14px, 2vw, 20px);
  background: linear-gradient(180deg, rgba(18, 21, 26, .85), transparent);
}

.page-faq .faq-finder__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 20px;
  margin-bottom: 18px;
}

.page-faq .faq-finder__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 800;
  letter-spacing: .06em;
  color: var(--paper);
}

.page-faq .faq-finder__hint {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .filter-bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-faq .filter-bar::-webkit-scrollbar {
  display: none;
}

.page-faq .filter-btn {
  flex: 0 0 auto;
  scroll-snap-align: start;
  padding: 9px 18px;
  border: 1px solid var(--line);
  background: rgba(20, 50, 41, .65);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .04em;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}

.page-faq .filter-btn:hover {
  border-color: var(--gold);
  color: var(--gold-soft);
}

.page-faq .filter-btn[aria-pressed="true"] {
  border-color: var(--blue);
  background: rgba(76, 141, 255, .18);
  color: #cfe0ff;
  box-shadow: inset 0 0 0 1px rgba(76, 141, 255, .35);
}

.page-faq .filter-btn--reset {
  border-style: dashed;
  color: var(--muted);
}

.page-faq .faq-finder__count {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: .04em;
}

/* ---------- 分组 ---------- */
.page-faq .faq-groups {
  padding-bottom: clamp(30px, 5vw, 56px);
}

.page-faq .faq-group {
  padding: clamp(30px, 6vw, 62px) 0;
  border-top: 1px dashed var(--faq-rule);
}

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

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-group__num {
  display: inline-block;
  padding: 3px 8px;
  border: 1px solid rgba(228, 179, 60, .45);
  color: var(--gold);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
}

.page-faq .faq-group__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(21px, 3.4vw, 34px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-faq .faq-group__lead {
  margin: 0;
  max-width: 40em;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.page-faq .faq-group__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-left: 2px solid var(--line);
  background: linear-gradient(90deg, rgba(20, 50, 41, .34), rgba(20, 50, 41, 0) 62%);
  transition: border-color .22s var(--ease), background .3s var(--ease);
}

.page-faq .faq-item:hover {
  border-left-color: rgba(228, 179, 60, .7);
}

.page-faq .faq-item:has(.fold__head[aria-expanded="true"]) {
  border-left-color: var(--gold);
  background: linear-gradient(90deg, rgba(20, 50, 41, .95), rgba(20, 50, 41, .35) 78%);
}

.page-faq .fold {
  border: 1px solid transparent;
  border-bottom-color: rgba(143, 163, 155, .14);
}

.page-faq .fold__head {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px 12px;
  align-items: start;
  padding: 15px 14px;
  border: 0;
  background: transparent;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: clamp(15px, 1.65vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
}

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

.page-faq .faq-item__num {
  color: var(--gold);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  padding-top: 4px;
}

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

.page-faq .fold__icon {
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.2;
  transition: transform .22s var(--ease);
}

.page-faq .fold__head[aria-expanded="true"] .fold__icon {
  transform: rotate(45deg);
}

.page-faq .fold__body-inner {
  padding: 2px 16px 20px 60px;
  color: var(--faq-body);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .fold__body-inner p {
  margin: 0 0 10px;
}

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

.page-faq .fold__body-inner ul {
  margin: 10px 0 12px;
  padding-left: 18px;
  list-style: none;
}

.page-faq .fold__body-inner li {
  position: relative;
  padding-left: 14px;
  margin-bottom: 6px;
  color: rgba(242, 245, 241, .78);
}

.page-faq .fold__body-inner li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 1px;
  background: var(--cyan);
}

.page-faq .fold__body-inner .tag {
  display: inline-block;
  padding: 1px 7px;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .06em;
}

/* ---------- 配图 ---------- */
.page-faq .faq-media {
  margin: 0;
  align-self: start;
}

.page-faq .faq-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  background: var(--coal);
  object-fit: cover;
}

.page-faq .faq-media--tall img {
  border-top: 3px solid var(--gold);
}

.page-faq .faq-media--wide img {
  border-top: 3px solid var(--blue);
}

.page-faq .faq-media__cap {
  margin-top: 10px;
  padding-left: 10px;
  border-left: 2px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

/* ---------- 收束 ---------- */
.page-faq .faq-cta {
  border-top: 1px solid var(--line);
  background:
    linear-gradient(120deg, rgba(228, 179, 60, .1), transparent 55%),
    var(--coal);
}

.page-faq .faq-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding: clamp(30px, 5vw, 56px) 0;
}

.page-faq .faq-cta__title {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.4vw, 34px);
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-faq .faq-cta__text p:last-child {
  margin: 0;
  max-width: 46em;
  color: var(--faq-body);
  font-size: 15px;
  line-height: 1.8;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1.6fr) auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    margin-top: 34px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-group--rule .faq-group__body {
    grid-template-columns: minmax(0, 1fr) 316px;
  }

  .page-faq .faq-group--prop .faq-group__body {
    grid-template-columns: 340px minmax(0, 1fr);
  }

  .page-faq .faq-group--prop .faq-media {
    order: 1;
  }

  .page-faq .faq-group--prop .faq-list {
    order: 2;
  }

  .page-faq .fold__body-inner {
    padding-right: 28px;
  }
}

@media (max-width: 520px) {
  .page-faq .fold__head {
    grid-template-columns: auto minmax(0, 1fr) auto;
    padding: 14px 10px;
  }

  .page-faq .fold__body-inner {
    padding: 2px 12px 18px 34px;
  }

  .page-faq .faq-index {
    padding: 16px 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .filter-btn,
  .page-faq .faq-item,
  .page-faq .fold__icon {
    transition: none;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    padding-left: 8px;
  }
}