.page-faq {
  background: var(--rx-void);
  color: var(--rx-ink);
  font-family: var(--rx-font-cn);
  font-size: var(--rx-fs-body);
  line-height: 1.75;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(24px, 4vw, 48px);
  border-bottom: 1px solid var(--rx-stroke);
}

.page-faq .faq-hero__head {
  max-width: 68ch;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .faq-hero__head h1 {
  margin: 12px 0 0;
  font-size: var(--rx-fs-h1);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  color: var(--rx-mute);
  font-size: var(--rx-fs-body);
  line-height: 1.75;
}

.page-faq .faq-hero__media {
  position: relative;
  margin-top: clamp(24px, 4vw, 44px);
  overflow: hidden;
  border-top: 1px solid var(--rx-stroke);
  border-bottom: 1px solid var(--rx-stroke);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: clamp(140px, 22vw, 250px);
  object-fit: cover;
  filter: saturate(0.7) brightness(0.82) contrast(1.06);
}

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    180deg,
    rgba(230, 237, 247, 0.045) 0 1px,
    transparent 1px 4px
  );
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  padding: clamp(18px, 2.6vw, 26px) 0;
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--rx-stroke);
  color: var(--rx-ink-dim);
  font-size: var(--rx-fs-small);
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-jump__link .rx-num {
  font-family: var(--rx-font-mono);
  font-size: var(--rx-fs-mono);
  letter-spacing: 0.14em;
  color: var(--rx-mute);
  transition: color 0.2s ease;
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--rx-cyan-soft);
  background: var(--rx-cyan-fill);
  color: var(--rx-ink);
}

.page-faq .faq-jump__link:hover .rx-num,
.page-faq .faq-jump__link:focus-visible .rx-num {
  color: var(--rx-cyan);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  padding-block: clamp(32px, 5vw, 72px);
}

.page-faq .faq-index {
  border-left: 1px solid var(--rx-stroke);
  padding-left: 18px;
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--rx-font-mono);
  font-size: var(--rx-fs-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--rx-mute);
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 0;
  color: var(--rx-ink-dim);
  font-size: var(--rx-fs-small);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-faq .faq-index__dot {
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--rx-stroke);
  box-shadow: 0 0 0 0 var(--rx-cyan-fill);
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

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

.page-faq .faq-index__link:hover .faq-index__dot,
.page-faq .faq-index__link:focus-visible .faq-index__dot {
  background: var(--rx-cyan);
  box-shadow: 0 0 0 4px var(--rx-cyan-fill);
}

.page-faq .faq-index__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--rx-stroke);
  font-size: var(--rx-fs-mono);
  font-family: var(--rx-font-mono);
  letter-spacing: 0.06em;
  color: var(--rx-mute);
  line-height: 1.7;
}

/* ---------- 问答组 ---------- */
.page-faq .faq-groups {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  min-width: 0;
}

.page-faq .faq-panel {
  padding: clamp(20px, 3vw, 32px);
  scroll-margin-top: 96px;
}

.page-faq .faq-panel .rx-panel__title {
  margin: 18px 0 0;
  font-size: var(--rx-fs-h2);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.page-faq .faq-lead {
  margin: 10px 0 22px;
  max-width: 62ch;
  color: var(--rx-mute);
  font-size: var(--rx-fs-small);
  line-height: 1.7;
}

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

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

.page-faq .faq-item:last-child {
  border-bottom: 1px solid var(--rx-stroke);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 14px;
  align-items: center;
  gap: 12px;
  padding: 15px 4px;
  cursor: pointer;
  list-style: none;
  transition: background-color 0.2s ease;
}

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

.page-faq .faq-q:hover {
  background: var(--rx-cyan-fill);
}

.page-faq .faq-q:focus-visible {
  outline: 1px solid var(--rx-cyan);
  outline-offset: 2px;
}

.page-faq .faq-no {
  font-family: var(--rx-font-mono);
  font-size: var(--rx-fs-mono);
  letter-spacing: 0.14em;
  color: var(--rx-mute);
  transition: color 0.2s ease;
}

.page-faq .faq-q__text {
  font-size: var(--rx-fs-body);
  line-height: 1.55;
  color: var(--rx-ink);
  transition: color 0.2s ease;
}

.page-faq .faq-arrow {
  justify-self: end;
  transition: transform 0.2s ease;
}

.page-faq .faq-arrow path {
  stroke: var(--rx-mute);
  transition: stroke 0.2s ease;
}

.page-faq .faq-item[open] .faq-no,
.page-faq .faq-item[open] .faq-q__text {
  color: var(--rx-cyan);
}

.page-faq .faq-item[open] .faq-arrow {
  transform: rotate(90deg);
}

.page-faq .faq-item[open] .faq-arrow path {
  stroke: var(--rx-cyan);
}

@keyframes faqIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: none; }
}

.page-faq .faq-a {
  background: var(--rx-raise);
  padding: 16px 18px 18px;
  animation: faqIn 0.24s ease both;
}

.page-faq .faq-a p {
  margin: 0 0 12px;
  max-width: 62ch;
  color: var(--rx-ink-dim);
  font-size: var(--rx-fs-small);
  line-height: 1.75;
}

.page-faq .faq-a p:last-of-type {
  margin-bottom: 4px;
}

.page-faq .faq-go {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  position: relative;
  margin-top: 6px;
  padding-bottom: 3px;
  font-family: var(--rx-font-mono);
  font-size: var(--rx-fs-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rx-cyan);
  text-decoration: none;
}

.page-faq .faq-go::before {
  content: "↳";
  font-family: var(--rx-font-mono);
  color: var(--rx-cyan-soft);
}

.page-faq .faq-go::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--rx-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.28s ease;
}

.page-faq .faq-go:hover::after,
.page-faq .faq-go:focus-visible::after {
  transform: scaleX(1);
}

/* ---------- 区间比分配图 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
}

.page-faq .faq-figure {
  margin: 0;
  align-self: start;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--rx-stroke);
  filter: saturate(0.66) brightness(0.86) contrast(1.05);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--rx-font-mono);
  font-size: var(--rx-fs-mono);
  letter-spacing: 0.1em;
  color: var(--rx-mute);
}

/* ---------- 尾段 ---------- */
.page-faq .faq-tail {
  padding-block: 0;
}

.page-faq .faq-tail__panel {
  display: grid;
  gap: 22px;
  padding: clamp(22px, 3vw, 34px);
}

.page-faq .faq-tail__title {
  margin: 0;
  font-size: var(--rx-fs-h3);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.page-faq .faq-tail__desc {
  margin: 12px 0 0;
  max-width: 60ch;
  color: var(--rx-mute);
  font-size: var(--rx-fs-small);
  line-height: 1.75;
}

.page-faq .faq-tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 208px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }

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

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

  .page-faq .faq-tail__panel {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: center;
    gap: 32px;
  }

  .page-faq .faq-tail__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }
}

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

  .page-faq .faq-arrow,
  .page-faq .faq-go::after,
  .page-faq .faq-q,
  .page-faq .faq-jump__link {
    transition: none;
  }
}