.page-faq {
  --faq-side-w: 258px;
  --faq-rule: rgba(255, 255, 255, 0.14);
  --faq-rule-soft: rgba(255, 255, 255, 0.08);
  --faq-text: #EAF3EF;
  --faq-dim: #9FB3AC;
  --faq-card: rgba(255, 255, 255, 0.045);
  display: block;
  background: var(--ink-900);
  color: var(--faq-text);
}

/* ---------- 面包屑与首屏 ---------- */
.page-faq .breadcrumb {
  padding-top: 16px;
  font-size: 13px;
}

.page-faq .faq-top {
  padding-top: 14px;
}

.page-faq .faq-hero {
  position: relative;
  padding: 34px 20px 30px;
  border-radius: var(--r-l);
  border: 1px solid var(--faq-rule);
  background:
    radial-gradient(130% 150% at 6% -22%, rgba(182, 255, 61, 0.17), transparent 62%),
    linear-gradient(158deg, var(--ink-800) 0%, var(--ink-900) 82%);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -78px;
  bottom: -120px;
  width: 290px;
  height: 290px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 77, 28, 0.3), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: 28px;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-size: clamp(27px, 6.4vw, 48px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--white);
}

.page-faq .faq-hero h1::after {
  content: "";
  display: block;
  width: 72px;
  height: 4px;
  margin-top: 16px;
  background: var(--lime);
  border-radius: 2px;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--faq-dim);
}

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

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  border: 1px solid var(--faq-rule-soft);
  border-radius: var(--r-m);
  background: var(--faq-rule-soft);
  overflow: hidden;
}

.page-faq .faq-fact {
  padding: 14px 16px;
  background: rgba(7, 26, 20, 0.72);
}

.page-faq .faq-fact dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--steel-soft);
}

.page-faq .faq-fact dd {
  margin: 6px 0 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
}

.page-faq .faq-fact .num {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ---------- 场景入口 ---------- */
.page-faq .faq-scenes {
  padding-top: 46px;
}

.page-faq .faq-scenes__intro {
  margin: 10px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--faq-dim);
}

.page-faq .faq-scenes__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 24px;
}

.page-faq .faq-scene {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 22px 20px 20px;
  text-decoration: none;
  color: var(--white);
  background: var(--ink-800);
  border: 1px solid var(--faq-rule-soft);
  overflow: hidden;
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), background-color 0.28s var(--ease);
}

.page-faq .faq-scene::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 4px;
  background: var(--lime);
  transform: scaleX(0.3);
  transform-origin: left center;
  transition: transform 0.32s var(--ease);
}

.page-faq .faq-scene--round { border-radius: 56px var(--r-m) var(--r-l) var(--r-m); }
.page-faq .faq-scene--panel { border-radius: var(--r-m) 56px var(--r-m) var(--r-l); }
.page-faq .faq-scene--panel::before { background: var(--lime-deep); }
.page-faq .faq-scene--sub { border-radius: var(--r-m) var(--r-l) var(--r-m) 56px; }
.page-faq .faq-scene--sub::before { background: var(--flare-soft); }
.page-faq .faq-scene--member { border-radius: var(--r-l) var(--r-m) 56px var(--r-m); }
.page-faq .faq-scene--member::before { background: var(--flare); }

.page-faq .faq-scene:hover,
.page-faq .faq-scene:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(182, 255, 61, 0.45);
  background: var(--ink-700);
}

.page-faq .faq-scene:hover::before,
.page-faq .faq-scene:focus-visible::before {
  transform: scaleX(1);
}

.page-faq .faq-scene__idx {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: rgba(255, 255, 255, 0.16);
}

.page-faq .faq-scene__name {
  margin-top: 10px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-faq .faq-scene__desc {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--faq-dim);
}

.page-faq .faq-scene__count {
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel-soft);
  opacity: 0.75;
  transform: translateY(3px);
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), color 0.25s var(--ease);
}

.page-faq .faq-scene:hover .faq-scene__count,
.page-faq .faq-scene:focus-visible .faq-scene__count {
  opacity: 1;
  transform: none;
  color: var(--lime);
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  padding-top: 50px;
}

.page-faq .faq-side {
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-side__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--steel-soft);
}

.page-faq .faq-side__list {
  display: flex;
  gap: 8px;
  width: max-content;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
}

.page-faq .faq-side__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  font-size: 13.5px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--faq-text);
  background: var(--faq-card);
  border: 1px solid var(--faq-rule-soft);
  border-radius: 999px;
  transition: background-color 0.22s var(--ease), border-color 0.22s var(--ease), color 0.22s var(--ease);
}

.page-faq .faq-side__link:hover,
.page-faq .faq-side__link:focus-visible {
  background: rgba(182, 255, 61, 0.1);
  border-color: rgba(182, 255, 61, 0.45);
  color: var(--lime);
}

.page-faq .faq-side__num {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--lime);
}

.page-faq .faq-side__n {
  margin-left: 4px;
  padding: 1px 6px;
  font-size: 11px;
  border-radius: 999px;
  color: var(--steel-soft);
  background: rgba(255, 255, 255, 0.07);
}

.page-faq .faq-totop {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 12.5px;
  color: var(--steel-soft);
  text-decoration: none;
  border-bottom: 1px dotted currentColor;
  padding-bottom: 2px;
  transition: color 0.22s var(--ease);
}

.page-faq .faq-totop:hover,
.page-faq .faq-totop:focus-visible {
  color: var(--lime);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 108px;
  padding-bottom: 42px;
}

.page-faq .faq-group:last-child {
  padding-bottom: 8px;
}

.page-faq .faq-group__head {
  padding-bottom: 14px;
  border-bottom: 2px solid var(--faq-rule);
}

.page-faq .faq-group__num {
  margin: 0;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--lime);
}

.page-faq .faq-group__head h2 {
  margin: 8px 0 0;
  font-size: clamp(21px, 4.2vw, 30px);
  line-height: 1.28;
  font-weight: 700;
  color: var(--white);
}

.page-faq .faq-group__note {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-dim);
}

.page-faq .faq-list {
  margin-top: 6px;
}

.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid var(--faq-rule-soft);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.12);
  transition: background-color 0.3s var(--ease);
}

.page-faq .faq-item[open]::before {
  background: var(--lime);
}

.page-faq .faq-item__q {
  position: relative;
  display: block;
  padding: 18px 44px 18px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--white);
  transition: color 0.22s var(--ease);
}

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

.page-faq .faq-item__q::after {
  content: "";
  position: absolute;
  right: 18px;
  top: 24px;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--steel-soft);
  border-bottom: 2px solid var(--steel-soft);
  transform: rotate(45deg);
  transition: transform 0.26s var(--ease), border-color 0.26s var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(-135deg);
  border-color: var(--lime);
}

.page-faq .faq-item__q:hover {
  color: var(--lime);
}

.page-faq .faq-item__a {
  padding: 0 44px 20px 20px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--faq-dim);
}

.page-faq .faq-item__a p {
  margin: 0;
}

.page-faq .faq-item__a a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(182, 255, 61, 0.4);
}

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

/* ---------- 术语速查带 ---------- */
.page-faq .faq-terms {
  margin-top: 20px;
  padding: 44px 0 54px;
  scroll-margin-top: 108px;
  border-top: 1px solid var(--faq-rule-soft);
  border-bottom: 1px solid var(--faq-rule-soft);
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 64px),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 52%, var(--ink-900) 100%);
}

.page-faq .faq-terms__media {
  margin: 0 0 30px;
  border: 1px solid var(--faq-rule-soft);
  border-radius: var(--r-m);
  overflow: hidden;
}

.page-faq .faq-terms__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 6;
  object-fit: cover;
}

.page-faq .faq-terms__intro {
  margin: 10px 0 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-dim);
}

.page-faq .faq-terms__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 26px 0 0;
}

.page-faq .faq-term {
  display: grid;
  grid-template-columns: minmax(0, max-content) minmax(0, 1fr);
  column-gap: 12px;
  align-items: baseline;
  padding: 11px 2px;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
}

.page-faq .faq-term__k {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--lime);
  white-space: nowrap;
}

.page-faq .faq-term__k::after {
  content: "";
  display: inline-block;
  width: 18px;
  height: 2px;
  margin-left: 8px;
  vertical-align: middle;
  background-image: radial-gradient(circle, rgba(182, 255, 61, 0.7) 1px, transparent 1px);
  background-size: 5px 2px;
  background-repeat: repeat-x;
}

.page-faq .faq-term__v {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--faq-dim);
  overflow-wrap: anywhere;
}

/* ---------- 未解决 ---------- */
.page-faq .faq-help {
  padding: 50px 0 68px;
  scroll-margin-top: 108px;
}

.page-faq .faq-help__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: center;
}

.page-faq .faq-help h2 {
  margin: 12px 0 0;
  font-size: clamp(22px, 4.4vw, 32px);
  line-height: 1.26;
  font-weight: 700;
  color: var(--white);
}

.page-faq .faq-help__lead {
  margin: 16px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--faq-dim);
}

.page-faq .faq-help__channels {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
  padding: 18px 20px;
  border-left: 3px solid var(--flare);
  border-radius: 0 var(--r-m) var(--r-m) 0;
  background: rgba(255, 255, 255, 0.045);
}

.page-faq .faq-help__channels > div {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  align-items: baseline;
}

.page-faq .faq-help__channels dt {
  min-width: 74px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--steel-soft);
}

.page-faq .faq-help__channels dd {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-faq .faq-help__note {
  margin: 16px 0 24px;
  max-width: 58ch;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--steel-soft);
}

.page-faq .faq-help__media {
  margin: 0;
  border: 1px solid var(--faq-rule-soft);
  border-radius: var(--r-l);
  overflow: hidden;
  background: var(--ink-800);
}

.page-faq .faq-help__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 7;
  object-fit: cover;
}

.page-faq .faq-help__cap {
  padding: 12px 16px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--steel-soft);
  border-top: 1px solid var(--faq-rule-soft);
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-scenes__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-hero {
    padding: 44px 34px 38px;
  }

  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-terms__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 52px;
  }
}

/* ---------- 桌面：左侧常驻导航 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 44px;
    align-items: center;
  }

  .page-faq .faq-shell {
    grid-template-columns: var(--faq-side-w) minmax(0, 1fr);
    column-gap: 52px;
    padding-top: 62px;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 104px;
    overflow: visible;
  }

  .page-faq .faq-side__list {
    flex-direction: column;
    width: auto;
    gap: 2px;
    padding-bottom: 0;
  }

  .page-faq .faq-side__link {
    padding: 11px 12px;
    border: 0;
    border-left: 3px solid transparent;
    border-radius: 0 var(--r-s) var(--r-s) 0;
    background: transparent;
  }

  .page-faq .faq-side__link:hover,
  .page-faq .faq-side__link:focus-visible {
    border-left-color: var(--lime);
    background: rgba(182, 255, 61, 0.08);
  }

  .page-faq .faq-side__n {
    margin-left: auto;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 400px);
    gap: 54px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-scenes__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-scene,
  .page-faq .faq-scene::before,
  .page-faq .faq-scene__count,
  .page-faq .faq-item__q::after,
  .page-faq .faq-item::before,
  .page-faq .faq-side__link {
    transition-duration: 0.01ms;
  }

  .page-faq .faq-scene:hover,
  .page-faq .faq-scene:focus-visible {
    transform: none;
  }
}