.page-faq {
  --faq-idx-w: 228px;
  --faq-sticky: 96px;
  background: var(--c-night);
}

/* ---------- 顶部 ---------- */
.page-faq .faq-top {
  padding-block: var(--sp-4) var(--sp-6);
}

.page-faq .faq-hero {
  display: grid;
  gap: var(--sp-4);
  margin-top: var(--sp-4);
}

@media (min-width: 940px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
    gap: var(--sp-5);
  }
}

.page-faq .faq-hero__title {
  margin: var(--sp-2) 0 var(--sp-3);
  max-width: 15em;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 36em;
  font-size: 17px;
  line-height: 1.8;
  color: var(--c-gray);
}

.page-faq .faq-hero__facts {
  display: grid;
  gap: 10px;
  margin: var(--sp-4) 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 620px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .faq-hero__facts li {
  padding: 14px 16px;
  border-radius: var(--r-md);
  background: var(--cyan-06);
  border: 1px solid var(--line);
}

.page-faq .faq-hero__num {
  display: block;
  margin-bottom: 4px;
  font-size: 22px;
  line-height: 1.1;
  color: var(--c-cyan);
}

.page-faq .faq-hero__label {
  display: block;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-gray);
}

/* ---------- 图文容器 ---------- */
.page-faq .faq-shot {
  position: relative;
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--c-tactical);
  border: 1px solid var(--line);
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

.page-faq .faq-shot--hero {
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-shot--hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-cyan), rgba(22, 242, 184, 0) 70%);
}

.page-faq .faq-shot--inline {
  margin-bottom: var(--sp-3);
}

.page-faq .faq-shot--inline img {
  aspect-ratio: 10 / 7;
}

.page-faq .faq-shot__cap {
  padding: 12px 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-gray);
  background: var(--c-panel);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding-block: var(--sp-5) var(--sp-6);
}

.page-faq .faq-layout {
  display: grid;
  gap: var(--sp-4);
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-idx-w) minmax(0, 1fr);
    gap: var(--sp-5);
    align-items: start;
  }
}

/* ---------- 主题索引 ---------- */
.page-faq .faq-index {
  padding: 18px;
  border-radius: var(--r-lg);
  background: var(--c-tactical);
  border: 1px solid var(--line);
}

@media (min-width: 1000px) {
  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
    padding: 22px 18px;
  }
}

.page-faq .faq-index__title {
  margin: 6px 0 0;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--c-gray);
  text-decoration: none;
  transition: color 200ms ease, background-color 200ms ease, border-color 200ms ease;
}

.page-faq .faq-index__num {
  font-size: 12px;
  color: var(--c-silver);
  opacity: 0.7;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--c-mist);
  border-color: var(--cyan-32);
}

.page-faq .faq-index__link.is-active {
  color: var(--c-cyan);
  background: var(--cyan-12);
  border-color: transparent;
}

.page-faq .faq-index__link.is-active .faq-index__num {
  color: var(--c-cyan);
  opacity: 1;
}

@media (min-width: 1000px) {
  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__link {
    position: relative;
    width: 100%;
    padding: 10px 12px 10px 20px;
    border-radius: var(--r-sm);
    white-space: normal;
  }

  .page-faq .faq-index__link::before {
    content: "";
    position: absolute;
    left: 7px;
    top: 50%;
    width: 3px;
    height: 0;
    border-radius: 3px;
    background: var(--c-cyan);
    transform: translateY(-50%);
    transition: height 220ms ease;
  }

  .page-faq .faq-index__link.is-active::before {
    height: 58%;
  }
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-panels {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: var(--faq-sticky);
}

.page-faq .faq-group + .faq-group {
  margin-top: var(--sp-6);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 8px;
  padding-bottom: 16px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__index {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-size: 26px;
  line-height: 1;
  color: var(--c-cyan);
  opacity: 0.55;
}

.page-faq .faq-group__title {
  grid-column: 2;
  margin: 0;
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 0;
  max-width: 52em;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-gray);
}

/* ---------- 折叠面板 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .fold {
  border-radius: var(--r-md);
  background: var(--c-panel);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: border-color 220ms ease, background-color 220ms ease;
}

.page-faq .fold[open] {
  background: var(--c-turf);
  border-color: var(--cyan-32);
}

.page-faq .fold__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 17px 20px;
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-mist);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .fold__q::after {
  content: "+";
  margin-left: auto;
  padding-left: 12px;
  font-family: var(--f-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--c-cyan);
  transition: transform 240ms ease;
}

.page-faq .fold[open] .fold__q::after {
  content: "−";
  transform: rotate(180deg);
}

.page-faq .fold__num {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-cyan);
  opacity: 0.85;
}

.page-faq .fold__body {
  padding: 0 20px 20px 20px;
  animation: faq-open 300ms cubic-bezier(0.22, 0.8, 0.3, 1) both;
}

.page-faq .fold__body p {
  margin: 0 0 10px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--c-gray);
}

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

@keyframes faq-open {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: var(--r-pill);
  background: var(--orange-12);
  border: 1px solid var(--orange-28);
  font-family: var(--f-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-orange);
}

/* ---------- 收尾联系卡 ---------- */
.page-faq .faq-group--contact {
  margin-top: var(--sp-6);
}

.page-faq .faq-cta {
  display: grid;
  gap: var(--sp-3);
  padding: var(--sp-4);
  border-radius: var(--r-xl);
  background: linear-gradient(135deg, var(--c-tactical) 0%, rgba(4, 18, 14, 0.92) 100%);
  border: 1px solid var(--cyan-32);
  box-shadow: var(--shadow-lift);
}

@media (min-width: 820px) {
  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1.5fr) auto;
    align-items: center;
    gap: var(--sp-5);
    padding: var(--sp-5);
  }
}

.page-faq .faq-cta__title {
  margin: var(--sp-2) 0 10px;
}

.page-faq .faq-cta__note {
  margin: 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-gray);
}

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

/* ---------- 延伸链接 ---------- */
.page-faq .faq-more {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  margin-top: var(--sp-6);
  padding-top: var(--sp-3);
  border-top: 1px dashed var(--line-strong);
}

.page-faq .faq-more a {
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 200ms ease, border-color 200ms ease;
}

.page-faq .faq-more a:hover,
.page-faq .faq-more a:focus-visible {
  color: var(--c-cyan);
  border-bottom-color: var(--cyan-32);
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .fold__body {
    animation: none;
  }

  .page-faq .fold__q::after,
  .page-faq .faq-index__link,
  .page-faq .faq-index__link::before,
  .page-faq .faq-more a {
    transition: none;
  }

  .page-faq .fold[open] .fold__q::after {
    transform: none;
  }

  .page-faq .faq-index__link.is-active::before {
    height: 58%;
  }
}