.page-faq {
  --faq-index-w: 264px;
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(24px, 4vw, 44px) 0 clamp(36px, 6vw, 76px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__cut {
  position: absolute;
  z-index: -1;
  top: -20%;
  right: -12%;
  width: min(700px, 72%);
  height: 138%;
  background: linear-gradient(158deg, var(--pitch-600) 0%, var(--eblue-600) 100%);
  opacity: 0.1;
  clip-path: polygon(32% 0, 100% 0, 100% 100%, 0 100%);
  animation: faq-cut-in 640ms var(--ease) both;
}

@keyframes faq-cut-in {
  from { clip-path: polygon(100% 0, 100% 0, 100% 100%, 76% 100%); opacity: 0; }
  to { clip-path: polygon(32% 0, 100% 0, 100% 100%, 0 100%); opacity: 0.1; }
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  align-items: center;
}

.page-faq .faq-hero__kicker {
  margin: 14px 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--volt-500);
  text-transform: uppercase;
}

.page-faq .faq-hero__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-faq .faq-hero__lead-text {
  margin: 0 0 26px;
  max-width: 62ch;
  font-size: clamp(1rem, 1.6vw, 1.08rem);
  line-height: 1.78;
  color: var(--ink-600);
}

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

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

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 主体分屏 ---------- */
.page-faq .faq-body {
  padding: clamp(32px, 5vw, 68px) 0 clamp(40px, 6vw, 88px);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 56px);
  align-items: start;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  border-top: 2px solid var(--ink-900);
  padding-top: 14px;
}

.page-faq .faq-index__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-600);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px;
  align-items: baseline;
  padding: 10px 8px 10px 12px;
  border-left: 2px solid transparent;
  color: var(--ink-900);
  font-size: 0.94rem;
  text-decoration: none;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--paper-100);
  border-left-color: var(--pitch-600);
  transform: translateX(4px);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--eblue-600);
  outline-offset: 2px;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--pitch-600);
}

.page-faq .faq-index__text {
  line-height: 1.5;
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--ink-600);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(38px, 5vw, 68px);
  scroll-margin-top: calc(var(--header-h) + 28px);
}

.page-faq .faq-group:last-child {
  margin-bottom: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 2px 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
}

.page-faq .faq-group__num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 2.2vw, 1.45rem);
  line-height: 1.25;
  color: var(--pitch-600);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  line-height: 1.25;
  color: var(--ink-900);
}

.page-faq .faq-group__lead {
  margin: 6px 0 0;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--ink-600);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  display: grid;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line-soft);
  background: transparent;
  transition: background-color 0.22s var(--ease);
}

.page-faq .faq-item[open] {
  background: var(--paper-100);
}

.page-faq .faq-item__trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 16px 10px 16px 4px;
  cursor: pointer;
  list-style: none;
  transition: transform 0.22s var(--ease);
}

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

.page-faq .faq-item__trigger:focus-visible {
  outline: 2px solid var(--eblue-600);
  outline-offset: -2px;
}

.page-faq .faq-item[open] > .faq-item__trigger {
  transform: translateX(6px);
}

.page-faq .faq-item__badge {
  margin-top: 2px;
  padding: 3px 7px;
  border-radius: var(--r-sm);
  background: var(--ink-900);
  color: var(--chalk);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  transition: background-color 0.22s var(--ease);
}

.page-faq .faq-item[open] > .faq-item__trigger .faq-item__badge {
  background: var(--pitch-600);
}

.page-faq .faq-item__q {
  font-size: clamp(0.99rem, 1.9vw, 1.08rem);
  font-weight: 600;
  line-height: 1.58;
  color: var(--ink-900);
}

.page-faq .faq-item__icon {
  position: relative;
  width: 15px;
  height: 15px;
  margin-top: 6px;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--pitch-600);
  transition: transform 0.22s var(--ease);
}

.page-faq .faq-item__icon::before {
  left: 0;
  top: 7px;
  width: 15px;
  height: 2px;
}

.page-faq .faq-item__icon::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 15px;
}

.page-faq .faq-item[open] > .faq-item__trigger .faq-item__icon::after {
  transform: scaleY(0);
}

.page-faq .faq-item__panel {
  padding: 0 10px 20px 4px;
}

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

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

.page-faq .faq-item__inner {
  padding-left: 0;
  font-size: 0.96rem;
  line-height: 1.78;
  color: var(--ink-600);
}

.page-faq .faq-item__inner p {
  margin: 0 0 0.7em;
}

.page-faq .faq-item__inner p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__inner ul {
  margin: 0 0 0.7em;
  padding-left: 1.15em;
}

.page-faq .faq-item__inner li {
  margin-bottom: 0.35em;
}

.page-faq .faq-item__inner li:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__inner strong {
  color: var(--ink-900);
}

.page-faq .faq-item__inner a {
  color: var(--eblue-600);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__inner .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--volt-500);
}

/* ---------- 分组内配图 ---------- */
.page-faq .faq-figure {
  margin: 20px 0 6px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}

.page-faq .faq-figure .media__caption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--ink-600);
}

/* ---------- 收尾区块 ---------- */
.page-faq .faq-fallback {
  position: relative;
  background: linear-gradient(150deg, var(--ink-900) 0%, var(--pitch-700) 100%);
  color: var(--chalk);
  padding: clamp(36px, 5vw, 68px) 0;
  margin-top: clamp(8px, 2vw, 20px);
}

.page-faq .faq-fallback__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-faq .faq-fallback__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  color: var(--pitch-300);
}

.page-faq .faq-fallback__title {
  margin: 6px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  line-height: 1.25;
  color: var(--chalk);
}

.page-faq .faq-fallback__lead {
  margin: 0 0 24px;
  max-width: 56ch;
  font-size: 1rem;
  line-height: 1.78;
  color: rgba(255, 255, 255, 0.78);
}

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

.page-faq .faq-fallback__facts {
  display: grid;
  gap: 14px;
  padding-top: 6px;
  border-top: 1px solid var(--line-dark);
}

.page-faq .faq-fact {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .faq-fact__key {
  flex: none;
  min-width: 76px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--pitch-300);
}

.page-faq .faq-fact__val {
  font-family: var(--font-mono);
  font-size: 0.98rem;
  font-variant-numeric: tabular-nums;
  color: var(--chalk);
  word-break: break-all;
}

.page-faq .faq-fact__copy {
  margin-left: auto;
  padding: 4px 10px;
  border: 1px solid var(--line-dark);
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--chalk);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .faq-fact__copy:hover,
.page-faq .faq-fact__copy:focus-visible {
  background: var(--volt-500);
  border-color: var(--volt-500);
  color: var(--ink-900);
}

.page-faq .faq-fact__copy:focus-visible {
  outline: 2px solid var(--eblue-100);
  outline-offset: 2px;
}

.page-faq .faq-fact__copy[data-copied] {
  background: var(--pitch-300);
  border-color: var(--pitch-300);
  color: var(--ink-900);
}

.page-faq .faq-fallback__note {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.62);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-item__panel {
    padding-left: 52px;
  }
  .page-faq .faq-item__inner {
    max-width: 62ch;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  }
  .page-faq .faq-fallback__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
  }
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__cut,
  .page-faq .faq-item[open] .faq-item__panel {
    animation: none;
  }
  .page-faq .faq-item,
  .page-faq .faq-item__trigger,
  .page-faq .faq-index__link,
  .page-faq .faq-item__icon::before,
  .page-faq .faq-item__icon::after {
    transition: none;
  }
  .page-faq .faq-item[open] > .faq-item__trigger {
    transform: none;
  }
}
<<<END>>>