.page-faq {
  --faq-index-w: 236px;
  --faq-cut: 14px;
  padding-bottom: var(--stack);
}

.page-faq .breadcrumb {
  margin-top: clamp(16px, 3vw, 28px);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 4.6vw, 52px) 0 clamp(30px, 5vw, 60px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -30% -10% auto 42%;
  height: 320px;
  background:
    repeating-linear-gradient(115deg, rgba(55, 242, 196, .10) 0 1px, transparent 1px 26px),
    radial-gradient(closest-side, rgba(14, 91, 90, .38), transparent 72%);
  pointer-events: none;
  transform: rotate(-6deg);
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(22px, 3.6vw, 36px);
}

.page-faq .faq-hero__main h1 {
  margin: 10px 0 0;
  font-size: clamp(30px, 5.6vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-hero__aside {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: var(--clip-card);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--ink-800);
}

.page-faq .faq-stat__num {
  font-size: 20px;
  letter-spacing: .02em;
  color: var(--pulse);
}

.page-faq .faq-stat__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

/* 主体布局 */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  padding-top: clamp(24px, 4vw, 48px);
}

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

/* 问题索引 */
.page-faq .faq-index {
  min-width: 0;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__item {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  font-size: 14px;
  color: var(--cream);
  text-decoration: none;
  white-space: nowrap;
  background: var(--ink-800);
  border: 1px solid var(--line);
  clip-path: var(--clip-tag);
  transition: color .2s ease, background-color .2s ease, border-color .2s ease;
}

.page-faq .faq-index__num {
  font-size: 11px;
  color: var(--mist);
  transition: color .2s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--line-strong);
  background: var(--ink-700);
}

.page-faq .faq-index__link[aria-current="true"] {
  color: var(--ink-900);
  background: var(--pulse);
  border-color: var(--pulse);
}

.page-faq .faq-index__link[aria-current="true"] .faq-index__num {
  color: var(--ink-900);
}

.page-faq .faq-index__note {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* 问答分组 */
.page-faq .faq-group {
  margin-bottom: clamp(32px, 5vw, 60px);
  scroll-margin-top: 96px;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-group__num {
  font-size: 13px;
  color: var(--pulse);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-faq .faq-group__intro {
  margin: 10px 0 18px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

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

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

/* 手风琴 */
.page-faq .faq-item {
  margin-bottom: 10px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, var(--faq-cut) 100%, 0 calc(100% - var(--faq-cut)));
  transition: border-color .2s ease, background-color .2s ease;
}

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

.page-faq .faq-item[open] {
  background: var(--ink-700);
  border-color: rgba(55, 242, 196, .38);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--cream);
  font-size: 15.5px;
  line-height: 1.6;
}

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

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

.page-faq .faq-item__num {
  flex: 0 0 auto;
  font-size: 11.5px;
  padding-top: 3px;
  color: var(--mist);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
}

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 4px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--pulse);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
  transition: transform .2s ease;
}

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

.page-faq .faq-item__a {
  padding: 0 16px 18px 40px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-item__a p {
  margin: 0 0 8px;
}

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

/* 步骤条 */
.page-faq .faq-steps {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faqstep;
  padding-left: 32px;
  margin-top: 8px;
  color: var(--cream);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--pulse);
}

.page-faq .faq-steps li::after {
  content: "";
  position: absolute;
  left: 20px;
  top: 8px;
  width: 6px;
  height: 1px;
  background: var(--line-strong);
}

/* 电脑端分组 */
.page-faq .faq-split {
  display: grid;
  gap: 20px;
}

/* 帮助面板 */
.page-faq .faq-help {
  padding: clamp(18px, 3vw, 28px);
}

.page-faq .faq-help__lead {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--cream);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: var(--clip-card);
}

.page-faq .faq-help__item {
  display: grid;
  gap: 5px;
  padding: 13px 15px;
  background: var(--ink-800);
}

.page-faq .faq-help__label {
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--pulse);
}

.page-faq .faq-help__value {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--cream);
  overflow-wrap: anywhere;
}

.page-faq .faq-help__mail {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--cream);
  background: none;
  border: 1px solid var(--line-strong);
  padding: 6px 10px;
  cursor: pointer;
  overflow-wrap: anywhere;
  transition: border-color .2s ease, color .2s ease;
}

.page-faq .faq-help__mail:hover,
.page-faq .faq-help__mail:focus-visible {
  color: var(--pulse);
  border-color: var(--pulse);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

/* 桌面布局 */
@media (min-width: 720px) {
  .page-faq .faq-hero__aside {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-help__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .faq-item__q {
    padding: 17px 20px;
    font-size: 16.5px;
  }
  .page-faq .faq-item__a {
    padding: 0 20px 20px 48px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
  }
  .page-faq .faq-hero__aside {
    grid-template-columns: minmax(0, 1fr);
  }
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }
  .page-faq .faq-index__list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-index__link {
    width: 100%;
  }
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
    gap: 24px;
  }
  .page-faq .faq-split__media {
    position: sticky;
    top: 96px;
  }
}

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