.page-faq {
  --faq-hl: var(--cyan);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 4px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -1px 0 0;
  background-image:
    linear-gradient(to right, rgba(124, 141, 181, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(124, 141, 181, 0.06) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.18) 70%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.18) 70%, transparent 100%);
  pointer-events: none;
}

.page-faq .faq-hero .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-lede {
  max-width: var(--measure);
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 26px;
  border: 1px solid var(--line);
  background: var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 14px 16px;
  background: var(--panel);
}

.page-faq .faq-stat__value {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-stat__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .faq-stat:nth-child(1) .faq-stat__value { color: var(--cyan); }
.page-faq .faq-stat:nth-child(2) .faq-stat__value { color: var(--blue); }
.page-faq .faq-stat:nth-child(3) .faq-stat__value { color: var(--yellow); }
.page-faq .faq-stat:nth-child(4) .faq-stat__value { color: var(--orange); }

.page-faq .faq-hero__media {
  margin: 26px 0 0;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 通用小节 ---------- */
.page-faq .faq-section-lede {
  max-width: var(--measure);
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .hl {
  color: var(--cyan);
  font-weight: 600;
}

/* ---------- 高频八问 ---------- */
.page-faq .faq-common {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 26px;
}

.page-faq .faq-common__item {
  --tone: var(--cyan);
  position: relative;
  padding: 18px 18px 18px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-common__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--tone);
  opacity: 0.75;
}

.page-faq .faq-common__item--orange { --tone: var(--orange); }
.page-faq .faq-common__item--yellow { --tone: var(--yellow); }
.page-faq .faq-common__item--blue { --tone: var(--blue); }
.page-faq .faq-common__item--cyan { --tone: var(--cyan); }

.page-faq .faq-common__item:hover {
  border-color: rgba(124, 141, 181, 0.42);
  transform: translateY(-2px);
}

.page-faq .faq-common__num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--tone);
}

.page-faq .faq-common__q {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-common__a {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .faq-common__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 208, 0.35);
}

.page-faq .faq-common__a a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 分类索引 + 问答流 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  margin-top: 28px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-index__item a {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 11px 12px 11px 10px;
  border-bottom: 1px solid var(--line);
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 15px;
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .faq-index__item .mono {
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 0.08em;
}

.page-faq .faq-index__item a:hover,
.page-faq .faq-index__item a:focus-visible {
  color: var(--text);
  border-left-color: var(--cyan);
  background: var(--panel);
}

.page-faq .faq-index__media {
  margin: 22px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-index__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-cat {
  margin: 0 0 42px;
  scroll-margin-top: calc(var(--topbar-h) + 26px);
}

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

.page-faq .faq-cat__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-cat__num {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .faq-cat__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 21px;
  letter-spacing: -0.01em;
  color: var(--text);
}

/* ---------- 折叠问答题 ---------- */
.page-faq .faq-q {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-q > summary {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 4px 14px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  line-height: 1.62;
  color: var(--text);
  transition: color 0.18s var(--ease);
}

.page-faq .faq-q > summary::-webkit-details-marker { display: none; }
.page-faq .faq-q > summary::marker { content: ""; }

.page-faq .faq-q > summary:hover,
.page-faq .faq-q > summary:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-q__mark {
  position: relative;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  border: 1px solid rgba(124, 141, 181, 0.45);
  border-radius: 1px;
  transition: border-color 0.2s var(--ease);
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 0.22s var(--ease), opacity 0.22s var(--ease);
}

.page-faq .faq-q__mark::before {
  left: 3px;
  right: 3px;
  top: 50%;
  height: 1px;
  margin-top: -0.5px;
}

.page-faq .faq-q__mark::after {
  top: 3px;
  bottom: 3px;
  left: 50%;
  width: 1px;
  margin-left: -0.5px;
}

.page-faq .faq-q[open] .faq-q__mark {
  border-color: rgba(34, 224, 208, 0.6);
}

.page-faq .faq-q[open] .faq-q__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-q__body {
  max-width: 62ch;
  padding: 0 4px 16px 28px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

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

.page-faq .faq-q__body p + p {
  margin-top: 8px;
}

.page-faq .faq-q__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 208, 0.35);
}

.page-faq .faq-q__body a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 规则 / 接口双栏 ---------- */
.page-faq .faq-duo {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.page-faq .faq-duo__col {
  padding: 22px 20px 6px;
  background: linear-gradient(165deg, var(--panel) 0%, var(--panel-deep) 100%);
  border: 1px solid var(--line);
  border-top: 2px solid var(--blue);
  border-radius: var(--radius);
}

.page-faq .faq-duo__col:first-child {
  border-top-color: var(--cyan);
}

/* ---------- 仍然没有解决 ---------- */
.page-faq .faq-help {
  position: relative;
  padding: 26px 20px;
  background: linear-gradient(150deg, var(--panel) 0%, var(--panel-deep) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-help::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 224, 208, 0.14) 0%, transparent 68%);
  pointer-events: none;
}

.page-faq .faq-help__lede {
  position: relative;
  max-width: var(--measure);
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-help__list {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 22px 0 0;
  border: 1px solid var(--line);
  background: var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-help__row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  align-items: baseline;
  padding: 14px 16px;
  background: var(--panel);
}

.page-faq .faq-help__row dt {
  flex: 0 0 auto;
  min-width: 72px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-faq .faq-help__row dd {
  flex: 1 1 auto;
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-faq .faq-help__row dd.mono {
  font-family: var(--font-mono);
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-faq .faq-help__actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 平板以上 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-common {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-top: 34px;
  }

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

  .page-faq .faq-hero__media {
    aspect-ratio: 21 / 9;
    margin-top: 30px;
  }

  .page-faq .faq-stat__value {
    font-size: 26px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 44px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--topbar-h) + 22px);
  }

  .page-faq .faq-duo {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }

  .page-faq .faq-help {
    padding: 34px 32px;
  }

  .page-faq .faq-cat__title {
    font-size: 24px;
  }
}
<<<END>>>