.page-faq {
  --faq-axis-w: 268px;
  --faq-ease: cubic-bezier(.22, .7, .3, 1);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 4vw, 42px) 0 clamp(36px, 6vw, 76px);
  background:
    radial-gradient(120% 92% at 84% 4%, rgba(123, 59, 255, .32), transparent 62%),
    radial-gradient(92% 72% at 4% 32%, rgba(36, 214, 255, .14), transparent 60%),
    linear-gradient(180deg, var(--ink-2) 0%, var(--ink) 100%);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(36, 214, 255, .5), rgba(123, 59, 255, .5), transparent);
}

.page-faq .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(18px, 3vw, 30px);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-faq .breadcrumbs a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--faq-ease);
}

.page-faq .breadcrumbs a:hover {
  border-bottom-color: var(--edge-blue);
}

.page-faq .breadcrumbs__current {
  color: var(--silver);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
}

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

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-size: clamp(32px, 7.2vw, 62px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: .01em;
  color: var(--white);
  text-shadow:
    0 0 22px rgba(123, 59, 255, .6),
    0 0 56px rgba(36, 214, 255, .25);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--silver);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-fact {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: rgba(23, 16, 46, .6);
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-fact b {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-faq .faq-hero__media {
  margin: 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--edge-purple);
  background: var(--panel);
  box-shadow: var(--glow-purple);
  overflow: hidden;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-body {
  padding: clamp(36px, 6vw, 76px) 0 clamp(24px, 4vw, 44px);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 5vw, 48px);
}

/* 分类坐标轴 */

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

.page-faq .faq-axis__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-axis__list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-axis__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong);
  background: rgba(23, 16, 46, .72);
  color: var(--silver);
  font-size: 14px;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color .25s var(--faq-ease), color .25s var(--faq-ease), transform .25s var(--faq-ease);
}

.page-faq .faq-axis__name {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-axis__name .mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-faq .faq-axis__count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist);
}

.page-faq .faq-axis__item:hover {
  border-color: var(--edge-blue);
  color: var(--white);
  transform: translateY(-2px);
}

.page-faq .faq-axis__note {
  display: none;
}

/* ---------- 问答分组 ---------- */

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

.page-faq .faq-group + .faq-group {
  margin-top: clamp(38px, 6vw, 68px);
}

.page-faq .faq-group__head {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: baseline;
  padding-bottom: 16px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 84px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--purple), var(--blue));
}

.page-faq .faq-group__idx {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: clamp(26px, 5vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .04em;
  color: rgba(123, 59, 255, .62);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(21px, 3.2vw, 30px);
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--white);
}

.page-faq .faq-group__lede {
  grid-column: 2;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-group__media {
  margin: 0 0 22px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
}

.page-faq .faq-group__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-group__media figcaption {
  padding: 12px 18px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 手风琴 ---------- */

.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  border-radius: var(--radius-sm);
  border-left: 2px solid var(--line);
  background: linear-gradient(180deg, rgba(23, 16, 46, .78), rgba(18, 12, 36, .52));
  transition: border-color .25s var(--faq-ease), box-shadow .25s var(--faq-ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--blue);
  box-shadow: -3px 0 0 0 rgba(36, 214, 255, .35), 0 16px 38px -26px rgba(123, 59, 255, .95);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  border-radius: var(--radius-sm);
}

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

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

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--gold);
  line-height: 1;
}

.page-faq .faq-item__text {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--white);
}

.page-faq .faq-item__mark {
  position: relative;
  width: 22px;
  height: 22px;
  flex: none;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 5px;
  right: 5px;
  height: 2px;
  border-radius: 2px;
  background: var(--blue);
  transition: transform .25s var(--faq-ease);
}

.page-faq .faq-item__mark::before {
  transform: translateY(-50%);
}

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

.page-faq .faq-item[open] .faq-item__mark {
  border-color: var(--edge-blue);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: translateY(-50%) rotate(0deg);
}

.page-faq .faq-item__a {
  padding: 2px 18px 18px clamp(18px, 5vw, 52px);
  border-top: 1px solid var(--line-soft);
  margin-top: 2px;
  padding-top: 14px;
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-answer-in .28s var(--faq-ease);
}

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

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

.page-faq .faq-item__a > p + p {
  margin-top: 10px;
}

.page-faq .faq-item__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.page-faq .faq-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 15px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--edge-blue);
  background: rgba(36, 214, 255, .06);
  color: var(--blue);
  font-size: 13.5px;
  text-decoration: none;
  transition: background .25s var(--faq-ease), transform .25s var(--faq-ease);
}

.page-faq .faq-link:hover {
  background: rgba(36, 214, 255, .15);
  transform: translateY(-2px);
}

.page-faq .faq-item__a .copy-line {
  margin-top: 14px;
}

/* ---------- 底部引导带 ---------- */

.page-faq .faq-cta {
  margin-top: clamp(44px, 8vw, 96px);
  padding: clamp(32px, 5vw, 58px) 0 clamp(20px, 3vw, 32px);
  background:
    radial-gradient(90% 120% at 88% 0%, rgba(255, 78, 208, .16), transparent 58%),
    linear-gradient(118deg, rgba(123, 59, 255, .24), rgba(36, 214, 255, .1) 62%, transparent),
    var(--panel-2);
  border-top: 1px solid var(--line);
}

.page-faq .faq-cta__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
}

.page-faq .faq-cta__title {
  margin: 10px 0 0;
  font-size: clamp(24px, 4.4vw, 40px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--white);
  text-shadow: 0 0 26px rgba(123, 59, 255, .5);
}

.page-faq .faq-cta__lede {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--silver);
}

.page-faq .faq-cta__contacts {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-cta__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: start;
}

.page-faq .faq-cta__rail {
  margin-top: clamp(26px, 4vw, 44px);
  height: 10px;
  background-image: var(--speed-line);
  background-repeat: repeat-x;
  background-position: 0 50%;
  background-size: auto 2px;
  opacity: .55;
}

/* ---------- 响应式 ---------- */

@media (min-width: 600px) {
  .page-faq .faq-item__text {
    font-size: 17px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
  }

  .page-faq .faq-cta__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-axis-w) minmax(0, 1fr);
    gap: clamp(34px, 4vw, 58px);
    align-items: start;
  }

  .page-faq .faq-axis {
    position: sticky;
    top: 24px;
    padding: 22px 20px 24px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(23, 16, 46, .88), rgba(18, 12, 36, .62));
  }

  .page-faq .faq-axis__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-axis__list li + li {
    margin-top: 8px;
  }

  .page-faq .faq-axis__item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    box-sizing: border-box;
    white-space: normal;
    border-radius: var(--radius-sm);
    font-size: 14.5px;
    line-height: 1.5;
  }

  .page-faq .faq-axis__item:hover {
    transform: translateY(-2px);
  }

  .page-faq .faq-axis__note {
    display: block;
    margin: 18px 0 0;
    padding-top: 16px;
    border-top: 1px solid var(--line-soft);
    font-size: 13px;
    line-height: 1.75;
    color: var(--mist);
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-item__q {
    padding: 19px 24px;
  }

  .page-faq .faq-item__a {
    padding: 16px 24px 22px clamp(24px, 4vw, 64px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }

  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-axis__item,
  .page-faq .faq-link {
    transition: none;
  }

  .page-faq .faq-axis__item:hover,
  .page-faq .faq-link:hover {
    transform: none;
  }
}