.page-faq {
  --faq-cut: 18px;
  --faq-rail-w: 232px;
  --faq-rule: 1px solid var(--concrete-300);
  background: var(--stand-white);
  color: var(--night-ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-lead {
  padding-top: clamp(18px, 3vw, 40px);
}

.page-faq .faq-lead .breadcrumbs {
  margin-bottom: clamp(16px, 2vw, 26px);
}

.page-faq .faq-lead__inner {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  padding: clamp(22px, 3.4vw, 46px);
  background: var(--stand-white);
}

.page-faq .faq-lead__eyebrow {
  margin: 0 0 14px;
  color: var(--concrete-500);
}

.page-faq .faq-lead h1 {
  margin: 0 0 clamp(14px, 2vw, 20px);
  font-family: var(--font-display);
  font-size: clamp(1.95rem, 5.6vw, 4rem);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -0.012em;
}

.page-faq .faq-lead__intro {
  margin: 0;
  max-width: 36em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.82;
  color: var(--concrete-700);
}

.page-faq .faq-lead__card {
  padding: clamp(22px, 3vw, 32px);
  color: var(--stand-white);
}

.page-faq .faq-lead__card-label {
  margin: 0;
  color: var(--concrete-300);
}

.page-faq .faq-lead__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 20px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-lead__stats .stat-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 2.4vw, 1.6rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--lemon);
}

.page-faq .faq-lead__stats .stat-label {
  display: block;
  margin-top: 7px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--concrete-300);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  padding-bottom: clamp(56px, 8vw, 110px);
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-rail__label {
  margin: 0 0 12px;
  color: var(--concrete-500);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 8px 13px;
  font-size: 13px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--concrete-700);
  background: var(--concrete-100);
  border-bottom: 2px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease),
    background-color 0.18s var(--ease);
}

.page-faq .faq-rail__list a .num {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--concrete-500);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--night-ink);
  background: #dfe0d8;
  border-bottom-color: var(--ember);
}

/* ---------- 章节 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-space) + 20px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(40px, 5.5vw, 76px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 13px;
  padding-bottom: 14px;
}

.page-faq .faq-group__num {
  flex: none;
  padding: 3px 7px;
  line-height: 1;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--night-ink);
  background: var(--lemon);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.6vw, 1.72rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.005em;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  border-top: var(--faq-rule);
}

.page-faq .faq-item {
  border-bottom: var(--faq-rule);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: clamp(12px, 2vw, 22px);
  align-items: start;
  padding: 18px 6px 18px 0;
  cursor: pointer;
  list-style: none;
  transition: padding-left 0.18s var(--ease);
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q:hover {
  padding-left: 8px;
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--ember);
  outline-offset: 3px;
}

.page-faq .faq-item__num {
  margin-top: 3px;
  padding: 4px 7px;
  font-size: 11px;
  letter-spacing: 0.14em;
  line-height: 1;
  color: var(--concrete-500);
  background: var(--concrete-100);
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .faq-item[open] .faq-item__num {
  color: var(--night-ink);
  background: var(--lemon);
}

.page-faq .faq-item__text {
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--night-ink);
  transition: color 0.18s var(--ease);
}

.page-faq .faq-item__q:hover .faq-item__text {
  color: var(--ember);
}

.page-faq .faq-item__mark {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 6px;
  flex: none;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--concrete-500);
  transition: transform 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .faq-item__mark::before {
  width: 14px;
  height: 1px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__mark::after {
  width: 1px;
  height: 14px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item[open] .faq-item__mark::before {
  background: var(--ember);
}

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

.page-faq .faq-item__a {
  padding: 0 0 clamp(16px, 2.4vw, 26px);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 40em;
  padding: 16px clamp(16px, 2.4vw, 26px);
  background: var(--concrete-100);
  color: var(--concrete-700);
  border-left: 2px solid var(--lemon);
  font-size: 15px;
  line-height: 1.82;
  clip-path: polygon(
    0 0,
    100% 0,
    100% calc(100% - var(--faq-cut)),
    calc(100% - var(--faq-cut)) 100%,
    0 100%
  );
}

.page-faq .faq-item__a a {
  color: var(--night-ink);
  text-decoration: none;
  padding-bottom: 1px;
  background-image: linear-gradient(var(--lemon), var(--lemon));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 2px;
  transition: background-size 0.22s var(--ease);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  background-size: 100% 2px;
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(20px, 3vw, 32px);
}

.page-faq .faq-figure .media {
  clip-path: polygon(
    0 0,
    100% 0,
    100% calc(100% - 30px),
    calc(100% - 30px) 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 {
  margin-top: 10px;
  padding-left: 12px;
  border-left: 2px solid var(--concrete-300);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--concrete-500);
}

/* ---------- 平板以上 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-lead__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-space) + 12px);
  }

  .page-faq .faq-rail__list {
    display: grid;
    gap: 0;
    padding: 0;
    overflow: visible;
  }

  .page-faq .faq-rail__list a {
    padding: 9px 0 9px 12px;
    background: transparent;
    border-bottom: 0;
    border-left: 2px solid var(--concrete-300);
    white-space: normal;
    line-height: 1.4;
  }

  .page-faq .faq-rail__list a:hover,
  .page-faq .faq-rail__list a:focus-visible {
    background: transparent;
    border-bottom-color: transparent;
    border-left-color: var(--lemon);
    padding-left: 18px;
  }

  .page-faq .faq-item__q {
    padding: 22px 6px 22px 0;
    gap: 24px;
  }
}

/* ---------- 宽屏 ---------- */
@media (min-width: 1200px) {
  .page-faq .faq-lead__inner {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }

  .page-faq .faq-lead__card {
    margin-left: 24px;
  }
}
<<<END>>>