.page-faq {
  --faq-index-w: 260px;
  padding: clamp(20px, 3vw, 36px) 0 clamp(52px, 7vw, 96px);
}

.page-faq .jn-crumbs {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-head {
  margin-bottom: clamp(26px, 4vw, 46px);
  max-width: 46em;
}

.page-faq .faq-head__eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--jn-celadon);
  background: rgba(47, 107, 94, .08);
  border-left: 3px solid var(--jn-celadon);
}

.page-faq .faq-head h1 {
  margin: 0 0 16px;
  font-size: clamp(28px, 5.4vw, 46px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.025em;
  color: var(--jn-ink);
}

.page-faq .faq-head .jn-lede {
  margin: 0;
  font-size: clamp(15.5px, 2vw, 17.5px);
  line-height: 1.75;
  color: var(--jn-body);
  max-width: 36em;
}

/* 布局 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}

/* 侧栏 */
.page-faq .faq-side {
  min-width: 0;
}

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

.page-faq .faq-search {
  margin-bottom: 22px;
}

.page-faq .faq-search__label {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .07em;
  color: var(--jn-mono);
}

.page-faq .faq-search__input {
  width: 100%;
  box-sizing: border-box;
  padding: 11px 14px;
  font-family: inherit;
  font-size: 14.5px;
  color: var(--jn-ink);
  background: var(--jn-white);
  border: 1px solid var(--jn-line);
  border-radius: 2px;
  outline: none;
  transition: border-color .18s var(--jn-ease), box-shadow .18s var(--jn-ease);
}

.page-faq .faq-search__input::placeholder {
  color: var(--jn-mono);
  opacity: .75;
}

.page-faq .faq-search__input:focus {
  border-color: var(--jn-celadon);
  box-shadow: 0 0 0 3px rgba(47, 107, 94, .14);
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .07em;
  color: var(--jn-mono);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--jn-line);
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-left: -1px;
  padding: 9px 12px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--jn-body);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: color .18s var(--jn-ease), background-color .18s var(--jn-ease), border-color .18s var(--jn-ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--jn-celadon);
  border-left-color: var(--jn-celadon);
  background: rgba(127, 167, 154, .1);
  outline: none;
}

.page-faq .faq-index__no {
  flex: 0 0 auto;
  font-family: var(--jn-code);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--jn-celadon);
}

/* 分组 */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(36px, 5.5vw, 70px);
}

.page-faq .faq-group__head {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--jn-line);
  margin-bottom: 6px;
}

.page-faq .faq-group__head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 84px;
  height: 3px;
  background: linear-gradient(90deg, var(--jn-celadon), var(--jn-mist));
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  font-family: var(--jn-code);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--jn-celadon);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 3.2vw, 28px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--jn-ink);
}

/* 图片 */
.page-faq .faq-figure {
  margin: 20px 0 4px;
}

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

.page-faq .faq-figure--portrait {
  max-width: 300px;
}

/* 折叠条目 */
.page-faq .faq-list {
  border-top: 1px solid transparent;
}

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

.page-faq .faq-item summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 34px 18px 14px;
  cursor: pointer;
  list-style: none;
  border-left: 3px solid transparent;
  transition: border-color .2s var(--jn-ease), background-color .2s var(--jn-ease);
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary::after {
  content: "";
  position: absolute;
  top: 24px;
  right: 12px;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--jn-celadon);
  border-bottom: 2px solid var(--jn-celadon);
  transform: rotate(45deg);
  transition: transform .22s var(--jn-ease);
}

.page-faq .faq-item[open] summary::after {
  transform: rotate(-135deg);
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  background: rgba(255, 253, 248, .9);
  outline: none;
}

.page-faq .faq-item[open] summary {
  border-left-color: var(--jn-celadon);
  background: rgba(47, 107, 94, .05);
}

.page-faq .faq-q {
  font-size: clamp(15.5px, 2.1vw, 17px);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -0.01em;
  color: var(--jn-ink);
}

.page-faq .faq-a {
  max-width: 60ch;
  padding: 2px 18px 22px 17px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--jn-body);
}

.page-faq .faq-a p {
  margin: 0 0 12px;
}

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

.page-faq .faq-a a {
  color: var(--jn-celadon);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-a a:hover {
  color: var(--jn-vermilion);
}

/* 还是没解决 */
.page-faq .faq-unsolved {
  margin-top: 20px;
  padding: 0;
  background: rgba(255, 253, 248, .75);
  border: 1px dashed var(--jn-line);
  border-radius: 2px;
}

.page-faq .faq-unsolved summary {
  position: relative;
  padding: 12px 16px 12px 40px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  font-weight: 600;
  color: var(--jn-celadon);
}

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

.page-faq .faq-unsolved summary::marker {
  content: "";
}

.page-faq .faq-unsolved summary::before {
  content: "+";
  position: absolute;
  left: 16px;
  top: 11px;
  font-family: var(--jn-code);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--jn-celadon);
}

.page-faq .faq-unsolved[open] summary::before {
  content: "–";
}

.page-faq .faq-unsolved summary:focus-visible {
  outline: 2px solid var(--jn-celadon-2);
  outline-offset: -2px;
}

.page-faq .faq-unsolved__body {
  padding: 0 16px 16px 40px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--jn-body);
}

.page-faq .faq-unsolved__body p {
  margin: 0;
  max-width: 58ch;
}

.page-faq .faq-unsolved__body a {
  color: var(--jn-celadon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 中屏：侧栏转为横向索引 */
@media (min-width: 700px) and (max-width: 979px) {
  .page-faq .faq-index__list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    border-left: 0;
  }

  .page-faq .faq-index__link {
    margin-left: 0;
    padding: 7px 13px;
    font-size: 13.5px;
    background: var(--jn-white);
    border: 1px solid var(--jn-line);
    border-radius: 999px;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-color: var(--jn-celadon);
    border-left-color: var(--jn-celadon);
  }
}

/* 窄屏 */
@media (max-width: 699px) {
  .page-faq .faq-index__list {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    border-left: 0;
  }

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

  .page-faq .faq-index__link {
    margin-left: 0;
    padding: 7px 12px;
    font-size: 13px;
    background: var(--jn-white);
    border: 1px solid var(--jn-line);
    border-radius: 999px;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-color: var(--jn-celadon);
    border-left-color: var(--jn-celadon);
  }

  .page-faq .faq-side {
    padding-bottom: 4px;
  }

  .page-faq .faq-figure--portrait {
    max-width: 100%;
  }

  .page-faq .faq-a {
    padding-right: 6px;
  }

  .page-faq .faq-unsolved__body {
    padding-left: 16px;
  }
}

/* 桌面：侧栏粘性 */
@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(36px, 4.5vw, 68px);
  }

  .page-faq .faq-side__inner {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-index__list {
    border-left: 1px solid var(--jn-line);
  }
}

/* 大屏 */
@media (min-width: 1240px) {
  .page-faq {
    --faq-index-w: 288px;
  }

  .page-faq .faq-figure .jn-figure__img {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item summary,
  .page-faq .faq-item summary::after,
  .page-faq .faq-index__link,
  .page-faq .faq-search__input {
    transition: none;
  }
}
<<<END>>>