.page-faq {
  --faq-panel: rgba(255, 255, 255, 0.05);
  --faq-panel-soft: rgba(255, 255, 255, 0.022);
  --faq-hair: rgba(229, 231, 235, 0.1);
}

.page-faq img {
  max-width: 100%;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--hairline);
  background:
    radial-gradient(95% 130% at 10% 0%, rgba(168, 85, 247, 0.24), transparent 62%),
    linear-gradient(160deg, #0d2a22 0%, var(--ink) 52%, var(--ink-3) 100%);
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  mix-blend-mode: screen;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: clamp(2rem, 5vw, 3.2rem);
  padding-bottom: clamp(2.4rem, 6vw, 4rem);
}

.page-faq .faq-hero__title {
  margin: 0.75rem 0 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.25rem, 6.4vw, 4.35rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--gold);
  background: linear-gradient(96deg, #ffffff 8%, var(--mist) 44%, var(--gold) 98%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-faq .faq-hero__lede {
  margin: 1.15rem 0 0;
  max-width: 60ch;
  color: var(--mist);
  font-size: clamp(1rem, 1.7vw, 1.08rem);
  line-height: 1.85;
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem 2.6rem;
  margin: clamp(1.8rem, 4vw, 2.6rem) 0 0;
  padding: 1.2rem 0 0;
  list-style: none;
  border-top: 1px solid var(--hairline-gold);
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
}

.page-faq .faq-hero__facts strong {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 500;
  line-height: 1;
  color: var(--gold);
}

.page-faq .faq-hero__facts span {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--silver);
}

/* ---------- 控制台式问答面板 ---------- */
.page-faq .faq-console {
  padding-top: clamp(2.6rem, 6vw, 4.5rem);
}

.page-faq .faq-console__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.4rem, 4vw, 2.6rem);
}

/* 左侧索引 */
.page-faq .faq-rail {
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--faq-panel), var(--faq-panel-soft));
  padding: 1.05rem 0.95rem 1.15rem;
}

.page-faq .faq-rail__label {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--silver);
}

.page-faq .faq-rail__list {
  display: grid;
  gap: 0.12rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  padding: 0.55rem 0.6rem;
  border-left: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--mist);
  font-size: 0.95rem;
  line-height: 1.5;
  text-decoration: none;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  background: rgba(168, 85, 247, 0.14);
  border-left-color: var(--violet);
  color: #ffffff;
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .faq-rail__figure {
  margin: 1rem 0 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

/* 右侧面板 */
.page-faq .faq-panels {
  display: grid;
  gap: clamp(1.1rem, 3vw, 1.7rem);
}

.page-faq .faq-group {
  position: relative;
  overflow: hidden;
  padding: clamp(1.1rem, 3vw, 1.7rem);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--faq-panel), var(--faq-panel-soft) 72%);
  scroll-margin-top: calc(var(--rail-h) + 1.4rem);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--violet), var(--gold) 42%, transparent 86%);
  opacity: 0.5;
}

.page-faq .faq-group:target {
  border-color: var(--hairline-cyan);
  box-shadow: 0 0 0 1px rgba(45, 212, 191, 0.16), 0 26px 60px -34px rgba(45, 212, 191, 0.6);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 0.85rem;
  row-gap: 0.2rem;
  align-items: baseline;
  margin-bottom: 0.3rem;
  padding-bottom: 0.95rem;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--gold);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.12rem, 2.4vw, 1.42rem);
  letter-spacing: 0.005em;
  color: #ffffff;
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 0.1rem 0 0;
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--silver);
}

/* 折叠条目 */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-item:last-child {
  border-bottom: 0;
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.1rem;
  padding: 1.05rem 0.25rem;
  list-style: none;
  cursor: pointer;
  color: var(--mist);
  font-size: clamp(0.96rem, 1.7vw, 1.04rem);
  font-weight: 500;
  line-height: 1.55;
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item__q:hover,
.page-faq .faq-item[open] > .faq-item__q {
  color: #ffffff;
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  margin-top: 0.18rem;
  border: 1px solid var(--hairline-gold);
  border-radius: 50%;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 9px;
  height: 1px;
  background: var(--gold);
  transform: translate(-50%, -50%);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease), background var(--dur) var(--ease);
}

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

.page-faq .faq-item[open] .faq-item__mark {
  border-color: var(--cyan);
  background: rgba(45, 212, 191, 0.12);
}

.page-faq .faq-item[open] .faq-item__mark::before,
.page-faq .faq-item[open] .faq-item__mark::after {
  background: var(--cyan);
}

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

.page-faq .faq-item__a {
  padding: 0 2.6rem 1.25rem 0.25rem;
  color: var(--silver);
  font-size: 0.95rem;
  line-height: 1.85;
}

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

.page-faq .faq-item__a p + p {
  margin-top: 0.7rem;
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faqSlide 0.38s var(--ease) both;
}

@keyframes faqSlide {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 下一步入口 ---------- */
.page-faq .faq-next {
  padding-bottom: clamp(3rem, 8vw, 5rem);
}

.page-faq .faq-next__grid {
  margin-top: clamp(1.4rem, 4vw, 2.2rem);
}

.page-faq .faq-next .card {
  display: flex;
  flex-direction: column;
}

.page-faq .faq-next .card__text {
  margin-bottom: 1rem;
}

.page-faq .faq-next .card .btn {
  margin-top: auto;
  align-self: flex-start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__title {
    max-width: 22ch;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-console__grid {
    grid-template-columns: minmax(220px, 264px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--rail-h) + 1.25rem);
  }

  .page-faq .faq-rail__figure {
    max-width: 100%;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-console__grid {
    grid-template-columns: minmax(240px, 292px) minmax(0, 1fr);
  }

  .page-faq .faq-group {
    padding: 1.85rem 1.95rem;
  }
}

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

  .page-faq .faq-group,
  .page-faq .faq-item__mark,
  .page-faq .faq-rail__list a {
    transition: none;
  }
}