.page-faq {
  --faq-cut: 14px;
  --faq-gap: 0.6rem;
  display: block;
  background:
    radial-gradient(120% 55% at 86% -6%, rgba(47, 247, 214, 0.1), transparent 62%),
    var(--ink-900);
  color: var(--text);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: calc(var(--header-h) + 3.25rem) 0 clamp(2.25rem, 5vw, 3.25rem);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -14%;
  right: -16%;
  z-index: 0;
  width: min(760px, 78vw);
  height: 132%;
  pointer-events: none;
  background:
    linear-gradient(155deg, rgba(47, 247, 214, 0.2), rgba(4, 18, 12, 0) 58%),
    linear-gradient(335deg, rgba(255, 138, 43, 0.16), rgba(4, 18, 12, 0) 54%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
}

.page-faq .faq-hero__rail {
  position: relative;
  z-index: 1;
  width: var(--shell);
  margin-inline: auto;
  max-width: 62rem;
}

.page-faq .faq-hero h1 {
  margin: 0.85rem 0 0;
  font-family: var(--font-head);
  font-size: clamp(1.9rem, 5.2vw, 2.9rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 34rem;
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  margin: 1.15rem 0 0;
  max-width: 44rem;
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.8;
}

.page-faq .faq-hero__stats {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr));
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

.page-faq .faq-hero__stat {
  background: var(--ink-850);
  padding: 0.9rem 1.05rem;
}

.page-faq .faq-hero__stat strong {
  display: block;
  font-family: var(--font-num);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-faq .faq-hero__stat span {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--text-dim);
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout {
  width: var(--shell);
  margin-inline: auto;
  padding: 0.5rem 0 clamp(3.5rem, 8vw, 5.5rem);
  display: grid;
  gap: 2rem;
}

/* ---------- 左侧分组索引 ---------- */
.page-faq .faq-index__title {
  margin: 0 0 0.75rem;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
}

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

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--grid);
  border-left: 2px solid var(--grid);
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 1.4;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-index__link .num {
  color: var(--cyan);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--text);
  border-color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(47, 247, 214, 0.07);
  outline: none;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 1.25rem);
  margin-bottom: clamp(2.5rem, 6vw, 3.75rem);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.2rem 1rem;
  padding-bottom: 1rem;
  margin-bottom: 1.4rem;
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-group__num {
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.15rem, 2.6vw, 1.4rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

.page-faq .faq-group__lead {
  margin: 0.45rem 0 0;
  max-width: 44rem;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-faq .faq-group__lead a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 247, 214, 0.4);
}

.page-faq .faq-group__lead a:hover,
.page-faq .faq-group__lead a:focus-visible {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan-soft);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 1.4rem;
  background: var(--ink-850);
  border: 1px solid var(--grid);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

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

.page-faq .faq-figure figcaption {
  padding: 0.7rem 1rem;
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--text-dim);
  border-top: 1px solid var(--grid);
}

/* ---------- 问答手风琴 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-item {
  background: var(--ink-850);
  border: 1px solid var(--grid);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(47, 247, 214, 0.34);
}

.page-faq .faq-item[open] {
  background: var(--ink-800);
  border-color: rgba(47, 247, 214, 0.44);
}

.page-faq .faq-item > summary {
  cursor: pointer;
  list-style: none;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 0.85rem;
  padding: 1rem 1.15rem;
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__idx {
  padding-top: 0.34rem;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-item__q {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--text);
}

.page-faq .faq-item[open] .faq-item__q {
  color: var(--cyan-soft);
}

.page-faq .faq-item__mark {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 0.36rem;
  flex: none;
}

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

.page-faq .faq-item__mark::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .faq-item__mark::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 0 1.15rem 1.15rem 3rem;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 42rem;
}

.page-faq .faq-item[open] .faq-item__body {
  animation: faq-reveal 0.24s var(--ease) both;
}

/* ---------- 底部求助块 ---------- */
.page-faq .faq-help {
  position: relative;
  scroll-margin-top: calc(var(--header-h) + 1.25rem);
  padding: clamp(1.5rem, 4vw, 2.25rem);
  background:
    linear-gradient(140deg, rgba(255, 138, 43, 0.14), rgba(10, 33, 24, 0.94) 54%),
    var(--ink-800);
  border: 1px solid rgba(255, 138, 43, 0.42);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.page-faq .faq-help h2 {
  margin: 0 0 0.7rem;
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.page-faq .faq-help p {
  margin: 0;
  max-width: 46rem;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-help__actions {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 窄屏 ---------- */
@media (max-width: 40rem) {
  .page-faq .faq-item__body {
    padding-left: 1.15rem;
  }

  .page-faq .faq-hero__stat strong {
    font-size: 1.2rem;
  }
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 62rem) {
  .page-faq .faq-layout {
    grid-template-columns: 15rem minmax(0, 1fr);
    gap: 3rem;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
  }

  .page-faq .faq-index__link {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__body {
    animation: none;
  }

  .page-faq .faq-item,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-index__link {
    transition: none;
  }
}
<<<END>>>