.page-faq {
  --faq-soft: rgba(11, 58, 58, 0.34);
  --faq-soft-open: rgba(11, 58, 58, 0.62);
  --faq-cyan-line: rgba(57, 217, 208, 0.24);
  display: block;
  background: var(--m-void);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.6rem, 5vw, 3.2rem) 0 clamp(1.8rem, 4.5vw, 3.4rem);
  background:
    radial-gradient(120% 95% at 92% -10%, rgba(11, 58, 58, 0.95) 0%, rgba(7, 16, 31, 0) 60%),
    radial-gradient(90% 80% at -5% 110%, rgba(42, 27, 74, 0.85) 0%, rgba(7, 16, 31, 0) 62%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 10px;
  background-image: repeating-linear-gradient(
    to right,
    var(--line-strong) 0 1px,
    transparent 1px 22px
  );
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.8rem);
  margin-top: clamp(1.3rem, 3vw, 2.2rem);
}

.page-faq .faq-hero__title {
  margin: 0.55rem 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.9rem, 5.4vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--m-mist);
}

.page-faq .faq-hero__lede {
  margin: clamp(0.9rem, 2vw, 1.25rem) 0 0;
  max-width: 62ch;
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  line-height: 1.8;
  color: var(--m-silver);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: clamp(1.2rem, 2.6vw, 1.8rem);
}

.page-faq .faq-hero__aside {
  align-self: end;
  padding: clamp(1rem, 2.4vw, 1.4rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(42, 27, 74, 0.72), rgba(13, 27, 46, 0.6));
}

.page-faq .faq-hero__aside-label {
  margin: 0 0 0.8rem;
  font-family: var(--font-data);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--m-cyan);
}

.page-faq .faq-quick {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.4rem;
}

.page-faq .faq-quick__link {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.6rem 0.7rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  color: var(--m-mist);
  font-size: 0.95rem;
  text-decoration: none;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-quick__link:hover,
.page-faq .faq-quick__link:focus-visible {
  background: rgba(255, 107, 44, 0.12);
  border-color: rgba(255, 107, 44, 0.4);
  outline: none;
}

.page-faq .faq-quick__num {
  font-family: var(--font-data);
  font-size: 0.76rem;
  color: var(--m-orange);
  letter-spacing: 0.08em;
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-board {
  padding: clamp(2rem, 5vw, 3.6rem) 0 clamp(2.4rem, 6vw, 4.4rem);
  background:
    linear-gradient(180deg, rgba(11, 58, 58, 0.42) 0%, rgba(7, 16, 31, 0) 42%),
    var(--m-void);
}

.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.4rem, 3vw, 2.6rem);
}

.page-faq .faq-index {
  align-self: start;
}

.page-faq .faq-index__label {
  margin: 0 0 0.7rem;
  font-family: var(--font-data);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--m-silver);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.32rem;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.62rem 0.8rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  color: var(--m-silver);
  font-size: 0.93rem;
  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-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: rgba(57, 217, 208, 0.09);
  border-color: var(--faq-cyan-line);
  color: var(--m-mist);
  outline: none;
}

.page-faq .faq-index__num {
  font-family: var(--font-data);
  font-size: 0.76rem;
  color: var(--m-cyan);
  letter-spacing: 0.06em;
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  counter-reset: faqitem;
  margin-bottom: clamp(2rem, 5vw, 3.4rem);
  scroll-margin-top: 96px;
}

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

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.85rem;
  padding-bottom: 0.75rem;
  margin-bottom: 1.2rem;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-group__code {
  font-family: var(--font-data);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--m-orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
  line-height: 1.25;
  color: var(--m-mist);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  counter-increment: faqitem;
  margin-bottom: 0.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--faq-soft);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--line-strong);
}

.page-faq .faq-item[open] {
  background: var(--faq-soft-open);
  border-color: var(--faq-cyan-line);
  box-shadow: var(--shadow-lift);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: start;
  padding: clamp(0.95rem, 2.4vw, 1.25rem) clamp(1rem, 2.6vw, 1.35rem);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1rem, 1.7vw, 1.16rem);
  line-height: 1.55;
  color: var(--m-mist);
}

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

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

.page-faq .faq-item__num {
  padding-top: 0.28rem;
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--m-cyan);
}

.page-faq .faq-item__num::before {
  content: counter(faqitem, decimal-leading-zero);
}

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

.page-faq .faq-item__mark {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 0.3rem;
  flex: none;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 9px;
  height: 2px;
  border-radius: 2px;
  background: var(--m-orange);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

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

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

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

.page-faq .faq-item__a {
  margin: 0 clamp(1rem, 2.6vw, 1.35rem);
  padding: 0.9rem 0 clamp(1rem, 2.4vw, 1.3rem);
  border-top: 1px solid var(--line);
}

.page-faq .faq-item__a > p {
  margin: 0;
  max-width: 68ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--m-silver);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(13, 27, 46, 0.6);
}

.page-faq .faq-figure .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-figure .media-frame__caption {
  padding: 0.7rem clamp(0.9rem, 2vw, 1.1rem) 0.85rem;
  font-family: var(--font-data);
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--m-silver);
  border-top: 1px solid var(--line);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-outro {
  padding: 0 0 clamp(2.4rem, 6vw, 4rem);
}

.page-faq .faq-outro__panel {
  display: grid;
  gap: clamp(1.1rem, 2.6vw, 1.8rem);
  padding: clamp(1.4rem, 4vw, 2.4rem);
  border: 1px solid var(--faq-cyan-line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(110% 130% at 100% 0%, rgba(74, 18, 32, 0.85) 0%, rgba(13, 27, 46, 0.9) 62%),
    var(--m-panel);
}

.page-faq .faq-outro__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  line-height: 1.3;
  color: var(--m-mist);
}

.page-faq .faq-outro__text {
  margin: 0.7rem 0 0;
  max-width: 66ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--m-silver);
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.86fr);
    align-items: end;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: clamp(1.8rem, 3.6vw, 3rem);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    padding-right: 0.4rem;
  }

  .page-faq .faq-index__list {
    border-left: 1px solid var(--line);
    padding-left: 0.5rem;
  }

  .page-faq .faq-outro__panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-faq .faq-outro__actions {
    justify-content: flex-end;
  }
}

@media (max-width: 480px) {
  .page-faq .faq-item__q {
    gap: 0.55rem;
  }

  .page-faq .faq-item__a {
    margin: 0 0.95rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-index__link,
  .page-faq .faq-quick__link {
    transition: none;
  }
}