.page-faq {
  --faq-measure: 34rem;
  --faq-sticky: 6.5rem;
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  margin: clamp(1.25rem, 3vw, 2rem) 0 clamp(0.75rem, 2vw, 1.25rem);
}
.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--fs-cap);
  letter-spacing: 0.04em;
  color: var(--ink-silver);
}
.page-faq .breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--line);
}
.page-faq .breadcrumbs a {
  color: var(--ink-silver);
  text-decoration: none;
  transition: color var(--ease);
}
.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  gap: clamp(1.75rem, 5vw, 2.75rem);
  padding-block: clamp(0.5rem, 2vw, 1rem) clamp(2.5rem, 7vw, 4.5rem);
  background:
    radial-gradient(120% 90% at 86% -12%, rgba(139, 92, 246, 0.22), rgba(6, 10, 23, 0) 60%),
    radial-gradient(80% 70% at 6% 108%, rgba(34, 211, 238, 0.1), rgba(6, 10, 23, 0) 66%);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    rgba(139, 92, 246, 0) 0%,
    rgba(139, 92, 246, 0.6) 24%,
    rgba(34, 211, 238, 0.5) 56%,
    rgba(244, 114, 182, 0.42) 78%,
    rgba(139, 92, 246, 0) 100%
  );
}
.page-faq .faq-hero__text {
  display: grid;
  gap: 0.9rem;
  align-content: start;
}
.page-faq .faq-hero .rail-index {
  margin: 0;
}
.page-faq .faq-hero h1 {
  margin: 0;
  max-width: 18ch;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(2rem, 4.8vw, 3.3rem);
  line-height: 1.16;
  letter-spacing: 0.015em;
  color: var(--ink-star);
}
.page-faq .faq-hero__lede {
  margin: 0;
  max-width: var(--faq-measure);
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.85;
  color: var(--ink-silver);
}
.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.25rem 0 0;
}
.page-faq .faq-hero__media {
  margin: 0;
}

/* ---------- 媒体容器 ---------- */
.page-faq .frame-media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-orbit);
}
.page-faq .frame-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .frame-media--deep {
  background: linear-gradient(160deg, #0d142b 0%, #060a17 100%);
}
.page-faq .frame-media__caption {
  font-family: var(--font-mono);
  font-size: var(--fs-cap);
  letter-spacing: 0.04em;
  color: var(--ink-silver);
  background: linear-gradient(0deg, rgba(6, 10, 23, 0.88), rgba(6, 10, 23, 0));
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  margin-top: clamp(2rem, 5vw, 3.5rem);
}
.page-faq .faq-body > * {
  min-width: 0;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  border-bottom: 1px solid var(--line);
  padding-bottom: 1rem;
}
.page-faq .faq-index__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: var(--fs-cap);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-silver);
}
.page-faq .faq-index__list {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0 0 0.35rem;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}
.page-faq .faq-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  white-space: nowrap;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.9rem;
  color: var(--ink-silver);
  text-decoration: none;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}
.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--violet);
  transition: color var(--ease);
}
.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--ink-star);
  border-color: rgba(34, 211, 238, 0.55);
  background: rgba(13, 20, 43, 0.85);
}
.page-faq .faq-index__link:hover .faq-index__num,
.page-faq .faq-index__link:focus-visible .faq-index__num {
  color: var(--cyan);
}

/* ---------- 章节流 ---------- */
.page-faq .faq-stream {
  display: grid;
  gap: clamp(2.5rem, 7vw, 4.5rem);
  min-width: 0;
}
.page-faq .faq-group {
  scroll-margin-top: var(--faq-sticky);
}
.page-faq .faq-group__head {
  display: grid;
  gap: 0.5rem;
  padding-bottom: clamp(0.9rem, 2vw, 1.3rem);
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(0.5rem, 1.5vw, 0.9rem);
}
.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
  line-height: 1.35;
  letter-spacing: 0.02em;
  color: var(--ink-star);
}
.page-faq .faq-group__note {
  margin: 0;
  max-width: 48ch;
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--ink-silver);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: grid;
}
.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  background: transparent;
  transition: background var(--ease), border-color var(--ease);
}
.page-faq .faq-item:hover {
  border-bottom-color: rgba(139, 92, 246, 0.55);
}
.page-faq .faq-item[open] {
  background: var(--ink-orbit);
  border-bottom-color: rgba(34, 211, 238, 0.45);
}
.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 0.85rem;
  padding: 1.05rem 0.9rem 1.05rem 0.35rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 1.02rem;
  font-weight: 500;
  line-height: 1.65;
  color: var(--ink-star);
  transition: color var(--ease);
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q::marker {
  content: "";
}
.page-faq .faq-item__q:hover {
  color: var(--cyan);
}
.page-faq .faq-item__dial {
  display: grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  margin-top: 0.05rem;
  color: var(--ink-silver);
  transition: color var(--ease);
}
.page-faq .faq-item__dial svg {
  display: block;
  width: 100%;
  height: 100%;
}
.page-faq .dial-ring,
.page-faq .dial-tick,
.page-faq .dial-needle {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.3;
  stroke-linecap: round;
}
.page-faq .dial-tick {
  stroke-width: 1;
  opacity: 0.45;
}
.page-faq .dial-pin {
  fill: currentColor;
}
.page-faq .dial-needle {
  transform-box: view-box;
  transform-origin: 12px 12px;
  transition: transform var(--ease);
}
.page-faq .faq-item[open] .faq-item__dial {
  color: var(--cyan);
}
.page-faq .faq-item[open] .dial-needle {
  transform: rotate(90deg);
}
.page-faq .faq-item__a {
  padding: 0 0.9rem 1.25rem 2.95rem;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink-silver);
}
.page-faq .faq-item__a p {
  margin: 0 0 0.7rem;
  max-width: var(--faq-measure);
}
.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 0.22em;
  text-decoration-thickness: 1px;
  transition: color var(--ease);
}
.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--violet);
}

/* ---------- 步骤列表 ---------- */
.page-faq .faq-steps {
  counter-reset: faqstep;
  list-style: none;
  display: grid;
  gap: 0.5rem;
  margin: 0 0 0.7rem;
  padding: 0;
  max-width: var(--faq-measure);
}
.page-faq .faq-steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.65rem;
  align-items: baseline;
}
.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--violet);
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure {
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

/* ---------- 结尾入口 ---------- */
.page-faq .faq-reach {
  display: grid;
  gap: 1.25rem;
  padding-top: clamp(1.5rem, 4vw, 2.5rem);
  border-top: 1px solid var(--line);
  scroll-margin-top: var(--faq-sticky);
}
.page-faq .faq-reach__title {
  margin: 0 0 0.6rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  letter-spacing: 0.02em;
  color: var(--ink-star);
}
.page-faq .faq-reach__note {
  margin: 0;
  max-width: 46ch;
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--ink-silver);
}
.page-faq .faq-reach__note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 0.22em;
}
.page-faq .faq-reach .btn {
  justify-self: start;
}

/* ---------- 小屏收束 ---------- */
@media (max-width: 640px) {
  .page-faq .faq-item__q {
    padding: 0.95rem 0.6rem 0.95rem 0.2rem;
    font-size: 0.98rem;
  }
  .page-faq .faq-item__a {
    padding: 0 0.6rem 1.15rem 0.2rem;
  }
  .page-faq .faq-item__dial {
    width: 1.5rem;
    height: 1.5rem;
  }
  .page-faq .faq-hero h1 {
    max-width: none;
  }
}

/* ---------- 桌面两栏与偏心首屏 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: end;
  }
  .page-faq .faq-hero__text {
    grid-column: 1 / 9;
  }
  .page-faq .faq-hero__media {
    grid-column: 4 / 13;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 3fr) minmax(0, 8fr);
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
    border-bottom: 0;
    border-left: 1px solid var(--line);
    padding: 0 0 0 1.15rem;
  }
  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0.1rem;
    overflow-x: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-index__link {
    display: flex;
    justify-content: flex-start;
    padding: 0.5rem 0.15rem;
    border: 0;
    border-radius: 0;
    white-space: normal;
  }
  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    background: transparent;
  }
  .page-faq .faq-index__link:hover .faq-index__num,
  .page-faq .faq-index__link:focus-visible .faq-index__num {
    color: var(--cyan);
  }
  .page-faq .faq-reach {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 2rem;
  }
}
<<<END>>>