.page-faq {
  --faq-sticky-top: 72px;
  --faq-rail-w: 152px;
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(20px, 4vw, 40px) 0 clamp(36px, 6vw, 72px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(56, 242, 200, .13), transparent 62%),
    radial-gradient(90% 70% at 6% 12%, rgba(139, 92, 246, .10), transparent 60%),
    linear-gradient(180deg, var(--mist), var(--ink) 78%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  margin-top: clamp(18px, 3vw, 34px);
}

.page-faq .faq-hero__copy {
  min-width: 0;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(2.1rem, 6.2vw, 4.6rem);
  font-weight: 200;
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--text);
  word-break: break-word;
}

.page-faq .faq-hero__copy .lede {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: clamp(.95rem, 1.4vw, 1.05rem);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__media {
  min-width: 0;
  margin: 0;
}

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

.page-faq .media-frame__caption {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--muted-dim);
}

/* ---------- 症状索引胶囊条 ---------- */
.page-faq .faq-index {
  position: sticky;
  top: var(--faq-sticky-top);
  z-index: 6;
  padding: 10px 0;
  background: linear-gradient(180deg, rgba(7, 18, 15, .97), rgba(7, 18, 15, .88));
  border-top: 2px solid var(--line-soft);
  border-bottom: 2px solid var(--line-soft);
  backdrop-filter: blur(10px);
}

.page-faq .faq-index__bar {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.page-faq .faq-index__label {
  flex: none;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted-dim);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 4px 2px 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__list li {
  flex: none;
}

.page-faq .faq-chip {
  display: inline-block;
  padding: 7px 16px;
  border: 2px solid var(--line);
  border-radius: var(--radius-pill);
  font-size: .82rem;
  line-height: 1.4;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-chip:hover {
  border-color: var(--cyan);
  color: var(--text);
  transform: translateY(-2px);
}

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  padding-top: clamp(10px, 2vw, 24px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .faq-body {
  min-width: 0;
  max-width: 780px;
}

.page-faq .faq-group {
  padding: clamp(34px, 5.5vw, 60px) 0;
  scroll-margin-top: calc(var(--faq-sticky-top) + 84px);
}

.page-faq .faq-group + .faq-group {
  border-top: 2px solid var(--line-soft);
}

.page-faq .faq-group__head h2 {
  margin: 10px 0 0;
  font-size: clamp(1.32rem, 2.6vw, 1.95rem);
  font-weight: 500;
  line-height: 1.38;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-faq .faq-group__intro {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-group__list {
  margin-top: 22px;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  margin-top: 12px;
  border: 2px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(22, 42, 35, .55), rgba(14, 31, 26, .32));
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--line);
}

.page-faq .faq-item[open] {
  border-color: var(--line);
  box-shadow: var(--shadow-1);
}

.page-faq .faq-item > summary {
  position: relative;
  padding: 15px 48px 15px 18px;
  list-style: none;
  cursor: pointer;
  font-size: .98rem;
  font-weight: 500;
  line-height: 1.62;
  color: var(--text);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item > summary::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 20px;
  width: 0;
  height: 0;
  margin-top: -5px;
  border-left: 7px solid var(--cyan);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  transition: transform var(--dur) var(--ease), border-left-color var(--dur) var(--ease);
}

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

.page-faq .faq-item > summary:hover {
  color: var(--cyan);
}

.page-faq .faq-answer {
  padding: 14px 18px 18px;
  border-top: 2px solid var(--line-soft);
  font-size: .93rem;
  line-height: 1.85;
  color: var(--muted);
}

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

.page-faq .faq-answer p + p {
  margin-top: 10px;
}

.page-faq .faq-answer a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 200, .35);
}

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

/* ---------- 步骤 ---------- */
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 8px 0 8px 14px;
  border-left: 2px solid var(--line-soft);
  font-size: .93rem;
  line-height: 1.8;
  color: var(--muted);
  transition: border-left-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-steps li:hover {
  border-left-color: var(--cyan);
  color: var(--text);
}

.page-faq .faq-steps li a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 200, .35);
}

.page-faq .faq-steps .faq-step-no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .84rem;
  letter-spacing: .04em;
  color: var(--cyan);
  line-height: 1.9;
}

.page-faq .faq-steps--wide {
  margin-top: 22px;
  padding: 6px 0;
}

.page-faq .faq-steps--wide li {
  padding-top: 12px;
  padding-bottom: 12px;
  font-size: .95rem;
  color: var(--text);
}

.page-faq .faq-export-figure {
  margin: 24px 0 0;
  max-width: 460px;
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact__cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.page-faq .faq-contact__card {
  padding: 18px;
  border: 2px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(22, 42, 35, .8), rgba(11, 58, 46, .4));
  min-width: 0;
}

.page-faq .faq-contact__kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-contact__value {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: .98rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  word-break: break-word;
}

.page-faq .faq-contact__hint {
  margin: 8px 0 0;
  font-size: .84rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-contact__note {
  margin: 18px 0 0;
  font-size: .86rem;
  line-height: 1.8;
  color: var(--muted-dim);
}

.page-faq .faq-contact__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 200, .35);
}

/* ---------- 右侧索引点 ---------- */
.page-faq .faq-rail {
  display: none;
}

.page-faq .faq-rail__list {
  margin: 0;
  padding: 0 0 0 14px;
  list-style: none;
  border-left: 2px solid var(--line-soft);
}

.page-faq .faq-rail__list li + li {
  margin-top: 10px;
}

.page-faq .faq-rail__list a {
  display: flex;
  gap: 8px;
  align-items: baseline;
  font-size: .78rem;
  line-height: 1.5;
  color: var(--muted-dim);
  text-decoration: none;
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-rail__list a span {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--line);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-rail__list a:hover {
  color: var(--cyan);
  transform: translateX(3px);
}

.page-faq .faq-rail__list a:hover span {
  color: var(--cyan);
}

/* ---------- 焦点可见 ---------- */
.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: var(--radius-md);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-contact__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: end;
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) var(--faq-rail-w);
    column-gap: clamp(32px, 4vw, 72px);
  }

  .page-faq .faq-rail {
    display: block;
    position: sticky;
    top: calc(var(--faq-sticky-top) + 92px);
    align-self: start;
    padding-top: clamp(34px, 5.5vw, 60px);
  }

  .page-faq .faq-export-figure {
    float: right;
    width: 44%;
    margin: 4px 0 18px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .faq-item,
  .page-faq .faq-item > summary,
  .page-faq .faq-item > summary::after,
  .page-faq .faq-steps li,
  .page-faq .faq-rail__list a {
    transition: none;
  }

  .page-faq .faq-chip:hover,
  .page-faq .faq-rail__list a:hover {
    transform: none;
  }
}
<<<END>>>