.page-faq {
  --faq-gap: 14px;
  overflow-x: clip;
}

.page-faq .breadcrumb {
  margin-bottom: 26px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 104px 0 0;
  background-color: var(--sx-night);
  background-image:
    radial-gradient(circle at 84% 4%, rgba(47, 227, 196, 0.18), transparent 54%),
    radial-gradient(circle at 6% 88%, rgba(255, 122, 47, 0.12), transparent 46%),
    var(--sx-glow);
  overflow: hidden;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 12px;
  font-family: var(--sx-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--sx-cyan);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  max-width: 22ch;
  font-family: var(--sx-head);
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--sx-text);
}

.page-faq .faq-hero__lead {
  margin: 0 0 24px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--sx-muted);
}

.page-faq .faq-hero__count {
  display: inline-flex;
  align-items: center;
  margin: 0;
  padding: 7px 16px;
  border: 1px solid rgba(124, 255, 107, 0.42);
  border-radius: 999px;
  background: rgba(124, 255, 107, 0.07);
  font-family: var(--sx-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--sx-lime);
}

.page-faq .faq-hero__band {
  margin-top: 44px;
}

.page-faq .faq-hero__band img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 5;
  object-fit: cover;
  border: 1px solid rgba(58, 74, 117, 0.6);
  border-bottom: 0;
  border-radius: var(--sx-r-lg) var(--sx-r-lg) 0 0;
}

/* ---------- 主体骨架 ---------- */

.page-faq .faq-body {
  padding: 48px 0 96px;
  background: var(--sx-night);
}

.page-faq .faq-layout {
  display: grid;
  gap: 28px;
}

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

/* ---------- 左栏索引 ---------- */

.page-faq .faq-index__label {
  margin: 0 0 10px;
  font-family: var(--sx-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--sx-muted);
}

.page-faq .faq-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: block;
  padding: 8px 0 8px 14px;
  border-left: 3px solid transparent;
  font-size: 14px;
  line-height: 1.55;
  color: var(--sx-muted);
  text-decoration: none;
  transition: color 0.22s var(--sx-ease), border-color 0.22s var(--sx-ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--sx-text);
}

.page-faq .faq-index__link.is-current {
  color: var(--sx-lime);
  border-left-color: var(--sx-lime);
}

@media (max-width: 979px) {
  .page-faq .faq-index {
    padding: 12px 14px;
    border: 1px solid rgba(58, 74, 117, 0.65);
    border-radius: var(--sx-r);
    background: var(--sx-stand);
  }

  .page-faq .faq-index__groups {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

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

  .page-faq .faq-index__group {
    flex: 0 0 auto;
    margin: 0;
    padding: 0;
    border: 0;
  }

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

  .page-faq .faq-index__list {
    display: flex;
    gap: 8px;
  }

  .page-faq .faq-index__link {
    white-space: nowrap;
    padding: 7px 14px;
    border: 1px solid rgba(58, 74, 117, 0.8);
    border-radius: 999px;
    font-size: 13px;
  }

  .page-faq .faq-index__link.is-current {
    border-color: var(--sx-lime);
    background: rgba(124, 255, 107, 0.1);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-faq .faq-index__group + .faq-index__group {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(58, 74, 117, 0.55);
  }
}

/* ---------- 章节 ---------- */

.page-faq .faq-section {
  scroll-margin-top: 100px;
}

.page-faq .faq-section + .faq-section::before {
  content: "";
  display: block;
  height: 1px;
  margin: 52px 0;
  background: linear-gradient(90deg, rgba(58, 74, 117, 0.9), rgba(58, 74, 117, 0) 80%);
}

.page-faq .faq-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px;
  margin: 0 0 12px;
}

.page-faq .faq-section__num {
  flex: 0 0 auto;
  font-family: var(--sx-mono);
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--sx-lime);
  text-shadow: 0 0 24px rgba(124, 255, 107, 0.32);
}

.page-faq .faq-section__title {
  margin: 0;
  font-family: var(--sx-head);
  font-size: clamp(19px, 3.2vw, 25px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--sx-text);
}

.page-faq .faq-section__lead {
  margin: 0 0 20px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--sx-muted);
}

.page-faq .faq-section__lead a {
  color: var(--sx-lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(124, 255, 107, 0.4);
}

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

/* ---------- 可展开内容组 ---------- */

.page-faq .faq-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.page-faq .faq-item {
  border: 1px solid rgba(58, 74, 117, 0.65);
  border-radius: var(--sx-r-sm);
  background: var(--sx-panel);
  overflow: hidden;
  transition: border-color 0.24s var(--sx-ease), background-color 0.24s var(--sx-ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(124, 255, 107, 0.4);
  background: #18264f;
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: var(--faq-gap);
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--sx-text);
  transition: color 0.22s var(--sx-ease);
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q::before {
  content: "";
  flex: 0 0 3px;
  align-self: stretch;
  min-height: 20px;
  border-radius: 3px;
  background: var(--sx-line);
  transition: background-color 0.24s var(--sx-ease), box-shadow 0.24s var(--sx-ease);
}

.page-faq .faq-item[open] .faq-item__q::before {
  background: var(--sx-lime);
  box-shadow: 0 0 12px rgba(124, 255, 107, 0.5);
}

.page-faq .faq-item__q::after {
  content: "";
  flex: 0 0 auto;
  align-self: center;
  margin-left: auto;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--sx-muted);
  border-bottom: 2px solid var(--sx-muted);
  transform: rotate(45deg);
  transition: transform 0.24s var(--sx-ease), border-color 0.24s var(--sx-ease);
}

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

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

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

.page-faq .faq-item__a {
  padding: 0 20px 18px 35px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--sx-muted);
}

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

.page-faq .faq-item__a a {
  color: var(--sx-lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(124, 255, 107, 0.4);
}

/* ---------- 插图 ---------- */

.page-faq .faq-figure {
  display: grid;
  margin: 0 0 22px;
  border: 1px solid rgba(58, 74, 117, 0.65);
  border-radius: var(--sx-r-sm);
  background: var(--sx-panel);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 14px 18px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--sx-muted);
  border-top: 1px solid rgba(58, 74, 117, 0.5);
}

@media (min-width: 720px) {
  .page-faq .faq-figure {
    grid-template-columns: 200px minmax(0, 1fr);
    align-items: center;
  }

  .page-faq .faq-figure img {
    aspect-ratio: 1 / 1;
  }

  .page-faq .faq-figure figcaption {
    border-top: 0;
    border-left: 1px solid rgba(58, 74, 117, 0.5);
    padding: 18px 20px;
  }
}

/* ---------- 窄屏微调 ---------- */

@media (max-width: 700px) {
  .page-faq .faq-hero {
    padding-top: 88px;
  }

  .page-faq .faq-hero__band img {
    aspect-ratio: 16 / 9;
    border-radius: var(--sx-r-sm) var(--sx-r-sm) 0 0;
  }

  .page-faq .faq-section + .faq-section::before {
    margin: 40px 0;
  }

  .page-faq .faq-item__q {
    padding: 14px 14px;
    font-size: 14.5px;
  }

  .page-faq .faq-item__a {
    padding: 0 14px 16px 31px;
    font-size: 14.5px;
  }
}

/* ---------- 减少动效 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-item__q::before,
  .page-faq .faq-item__q::after,
  .page-faq .faq-index__link {
    transition: none;
  }
}
<<<END>>>