.page-faq {
  --faq-rail-w: 236px;
  --faq-gap: 56px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 34px 0 38px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(246, 168, 28, 0.11), transparent 58%),
    linear-gradient(180deg, rgba(18, 32, 50, 0.9), rgba(11, 21, 36, 0) 92%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(29, 46, 68, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(29, 46, 68, 0.6) 1px, transparent 1px);
  background-size: 88px 88px;
  opacity: 0.55;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
}

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

.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-hero__title {
  margin: 0 0 16px;
  max-width: 20ch;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 62ch;
  color: var(--steel);
}

.page-faq .faq-hero__aside {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.page-faq .faq-hero__aside-label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-faq .faq-hero__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-hero__links a {
  display: inline-block;
  color: var(--paper);
  font-size: 15px;
  line-height: 1.6;
  text-decoration: none;
  border-bottom: 1px solid rgba(246, 168, 28, 0.35);
  padding-bottom: 2px;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-hero__links a:hover,
.page-faq .faq-hero__links a:focus-visible {
  color: var(--amber-soft);
  border-color: var(--amber);
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-board {
  padding-top: 26px;
}

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 12px;
}

.page-faq .faq-filter .filter-chip[aria-pressed="true"],
.page-faq .faq-filter .filter-chip.is-active {
  border-color: var(--amber);
  color: var(--ink-950);
  background: var(--amber);
}

.page-faq .faq-filter .filter-chip {
  border-radius: 0;
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-faq .faq-filter__summary {
  margin: 0 0 22px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-filter__summary [data-filter-summary] {
  color: var(--steel);
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout {
  display: block;
}

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

/* ---------- 左侧分组索引 ---------- */
.page-faq .faq-rail {
  margin-bottom: 26px;
  overflow-x: auto;
}

.page-faq .faq-rail__label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 16px;
  white-space: nowrap;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 0;
  color: var(--steel);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-rail__num {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--amber-soft);
  border-color: rgba(246, 168, 28, 0.6);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  position: relative;
  padding: 26px 0 10px 18px;
  border-left: 1px solid var(--line);
}

.page-faq .faq-group + .faq-group {
  margin-top: 34px;
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 30px;
  width: 7px;
  height: 7px;
  background: var(--amber);
  opacity: 0.85;
}

.page-faq .faq-group__head {
  margin-bottom: 14px;
}

.page-faq .faq-group__num {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .faq-group__title {
  margin: 0 0 10px;
  color: var(--paper);
}

.page-faq .faq-group__lead {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 图文 ---------- */
.page-faq .faq-figure {
  margin: 18px 0 20px;
  border: 1px solid var(--line);
  background: var(--ink-950);
}

.page-faq .faq-figure .media__img,
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-figure .media__cap {
  display: block;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--steel);
  border-top: 1px solid var(--line);
}

/* ---------- 问题条目 ---------- */
.page-faq .faq-list {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item {
  border-top: 1px solid var(--line);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 16px;
  align-items: center;
  gap: 10px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q__num {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  transition: color 0.2s ease;
}

.page-faq .faq-q__text {
  font-size: 16px;
  line-height: 1.6;
  font-weight: 500;
  color: var(--paper);
  transition: color 0.18s ease;
}

.page-faq .faq-q:hover .faq-q__text,
.page-faq .faq-q:focus-visible .faq-q__text {
  color: var(--amber-soft);
}

.page-faq .faq-q__sign {
  position: relative;
  width: 14px;
  height: 14px;
  justify-self: end;
}

.page-faq .faq-q__sign::before,
.page-faq .faq-q__sign::after {
  content: "";
  position: absolute;
  background: var(--steel);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.page-faq .faq-q__sign::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 1px;
}

.page-faq .faq-q__sign::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 1px;
}

.page-faq .faq-item[open] .faq-q__num {
  color: var(--amber);
}

.page-faq .faq-item[open] .faq-q__sign::after {
  opacity: 0;
}

.page-faq .faq-a {
  padding: 0 0 20px 50px;
  animation: faq-open 0.2s ease both;
}

@keyframes faq-open {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-steps {
  list-style: none;
  counter-reset: faq-step;
  margin: 0 0 14px;
  padding: 0;
}

.page-faq .faq-steps li {
  counter-increment: faq-step;
  position: relative;
  padding-left: 32px;
  margin-bottom: 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--steel);
}

.page-faq .faq-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--amber-soft);
}

.page-faq .faq-note {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid rgba(246, 168, 28, 0.5);
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-a a,
.page-faq .faq-note a,
.page-faq .faq-support__list a {
  color: var(--amber-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 208, 122, 0.45);
}

.page-faq .faq-a a:hover,
.page-faq .faq-note a:hover,
.page-faq .faq-support__list a:hover {
  border-color: var(--amber);
}

/* ---------- 客服面板 ---------- */
.page-faq .faq-support {
  display: grid;
  gap: 20px;
  margin-top: 6px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  background:
    linear-gradient(150deg, rgba(246, 168, 28, 0.08), transparent 60%),
    var(--panel);
}

.page-faq .faq-support__label {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-faq .faq-support__mail {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-copy {
  margin-bottom: 18px;
}

.page-faq .faq-support__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-support__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-support__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 1px;
  background: var(--amber);
}

.page-faq .faq-support .faq-figure {
  margin: 0;
}

.page-faq .faq-top {
  display: inline-block;
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 3px;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-top:hover,
.page-faq .faq-top:focus-visible {
  color: var(--amber);
  border-color: var(--amber);
}

/* ---------- 空态 ---------- */
.page-faq .faq-empty {
  margin-top: 26px;
  padding: 18px;
  border: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-empty[hidden] {
  display: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 52px 0 56px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: 40px;
  }

  .page-faq .faq-hero__aside {
    border-top: 0;
    border-left: 1px solid var(--line);
    padding-top: 0;
    padding-left: 22px;
  }

  .page-faq .faq-group {
    padding-left: 24px;
  }

  .page-faq .faq-q {
    grid-template-columns: 52px minmax(0, 1fr) 16px;
    padding: 18px 0;
  }

  .page-faq .faq-q__text {
    font-size: 17px;
  }

  .page-faq .faq-a {
    padding-left: 62px;
  }

  .page-faq .faq-support {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    padding: 28px 26px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-hero {
    padding: 64px 0 68px;
  }

  .page-faq .faq-board {
    padding-top: 34px;
  }

  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 40px);
    margin-bottom: 0;
    overflow-x: visible;
    border-right: 1px solid var(--line);
    padding-right: 18px;
  }

  .page-faq .faq-rail__list {
    display: grid;
    gap: 2px;
    white-space: normal;
  }

  .page-faq .faq-rail__link {
    display: flex;
    padding: 9px 0;
    border-bottom: 1px solid transparent;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    border-color: rgba(246, 168, 28, 0.5);
  }

  .page-faq .faq-group + .faq-group {
    margin-top: 46px;
  }

  .page-faq .faq-group__lead {
    font-size: 16px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero__title {
    max-width: 18ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-a {
    animation: none;
  }

  .page-faq .faq-q__sign::before,
  .page-faq .faq-q__sign::after,
  .page-faq .faq-q__num,
  .page-faq .faq-q__text,
  .page-faq .faq-rail__link,
  .page-faq .faq-hero__links a,
  .page-faq .faq-top {
    transition: none;
  }
}
<<<END>>>