.page-faq {
  --faq-num-col: 3.4rem;
  display: block;
}

.page-faq .faq-hero {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: clamp(1.25rem, 3vw, 2rem) 0 clamp(2rem, 5vw, 3.25rem);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__title {
  margin: 0.55rem 0 0;
  font-size: clamp(2rem, 7vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.14;
}

.page-faq .faq-hero__lede {
  max-width: 46ch;
  margin: 1.1rem 0 0;
  font-size: var(--fs-17);
  line-height: var(--lh-body);
  color: var(--c-text);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__art {
  margin: 0;
  position: relative;
}

.page-faq .faq-hero__art::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--r-lg);
  box-shadow: inset 0 0 0 1px var(--line-strong);
  pointer-events: none;
}

.page-faq .faq-hero__art img,
.page-faq .faq-help__art img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-lg);
}

/* ---------- 四步流程 ---------- */

.page-faq .faq-flow {
  display: grid;
  gap: 1px;
  margin: 1.75rem 0 0;
  padding: 1px;
  list-style: none;
  background: var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-faq .faq-flow__step {
  position: relative;
  padding: 1.4rem 1.25rem 1.6rem;
  background: var(--c-panel);
}

.page-faq .faq-flow__step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 44px;
  height: 2px;
  background: var(--c-cyan);
  box-shadow: var(--glow-cyan);
}

.page-faq .faq-flow__num {
  display: block;
  font-size: 2.4rem;
  line-height: 1;
  color: var(--c-cyan);
  letter-spacing: -0.02em;
}

.page-faq .faq-flow__title {
  margin: 0.75rem 0 0;
  font-size: var(--fs-17);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-flow__text {
  margin: 0.5rem 0 0;
  font-size: var(--fs-14);
  line-height: var(--lh-mid);
  color: var(--c-muted);
}

/* ---------- 问答板 ---------- */

.page-faq .faq-board-wrap .filter-bar {
  margin: 1.5rem 0 0.5rem;
}

.page-faq .faq-board {
  margin-top: 0.5rem;
  border-top: 1px solid var(--line);
}

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

.page-faq .qa__summary {
  display: grid;
  grid-template-columns: var(--faq-num-col) minmax(0, 1fr) 1.1rem;
  align-items: baseline;
  gap: 0.8rem;
  padding: 1.15rem 0.15rem;
  cursor: pointer;
  list-style: none;
  transition: background var(--dur);
}

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

.page-faq .qa__summary:hover {
  background: var(--glass);
}

.page-faq .qa__summary:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

.page-faq .qa__num {
  font-size: var(--fs-14);
  letter-spacing: 0.08em;
  color: var(--c-muted);
  transition: color var(--dur);
}

.page-faq .qa__q {
  font-size: var(--fs-17);
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-text);
}

.page-faq .qa__chev {
  justify-self: end;
  width: 9px;
  height: 9px;
  margin-top: 0.4em;
  border-right: 2px solid var(--c-muted);
  border-bottom: 2px solid var(--c-muted);
  transform: rotate(45deg);
  transition: transform var(--dur), border-color var(--dur);
}

.page-faq .qa[open] .qa__num,
.page-faq .qa__summary:hover .qa__num {
  color: var(--c-cyan);
}

.page-faq .qa[open] .qa__chev {
  transform: rotate(-135deg);
  border-color: var(--c-cyan);
}

.page-faq .qa__body {
  padding: 0 1.5rem 1.35rem var(--faq-num-col);
  margin-left: 0.8rem;
  font-size: var(--fs-17);
  line-height: var(--lh-body);
  color: var(--c-text);
}

.page-faq .qa__body p {
  margin: 0;
  max-width: 62ch;
}

.page-faq .qa__body a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

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

/* ---------- 仍需帮助 ---------- */

.page-faq .faq-help__panel {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  padding: clamp(1.4rem, 4vw, 2.6rem);
}

.page-faq .faq-help__lede {
  max-width: 44ch;
  margin: 0.9rem 0 0;
  font-size: var(--fs-17);
  line-height: var(--lh-body);
  color: var(--c-text);
}

.page-faq .faq-help__list {
  margin: 1.4rem 0 1.8rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
  font-size: var(--fs-14);
  color: var(--c-muted);
}

.page-faq .faq-help__list .mono {
  color: var(--c-yellow);
  letter-spacing: 0.02em;
}

.page-faq .faq-help__art {
  margin: 0;
}

.page-faq .faq-help__art img {
  border-radius: var(--r-md);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-faq .faq-help__panel {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .page-faq {
    --faq-num-col: 2.4rem;
  }

  .page-faq .qa__summary {
    grid-template-columns: var(--faq-num-col) minmax(0, 1fr) 1rem;
    gap: 0.55rem;
  }

  .page-faq .qa__body {
    padding-right: 0.25rem;
    margin-left: 0;
  }

  .page-faq .qa__q {
    font-size: var(--fs-17);
  }

  .page-faq .faq-flow__num {
    font-size: 2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__chev,
  .page-faq .qa__summary,
  .page-faq .qa__num {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>