.page-faq {
  --faq-idx-w: clamp(176px, 19vw, 246px);
  --faq-cyan-soft: rgba(53, 224, 224, 0.42);
  color: var(--paper);
  padding: 0 var(--gutter) clamp(72px, 10vw, 128px);
  overflow-x: clip;
}

.page-faq .crumbs,
.page-faq .faq-hero,
.page-faq .faq-group {
  max-width: var(--content-max);
  margin-inline: auto;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(20px, 3vw, 34px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mute);
}

.page-faq .crumbs a {
  color: var(--mute);
  text-decoration: none;
  padding-bottom: 1px;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .crumbs a:hover,
.page-faq .crumbs a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--faq-cyan-soft);
}

.page-faq .crumbs [aria-current="page"] {
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(34px, 5.5vw, 70px);
  padding-bottom: clamp(30px, 4.5vw, 54px);
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-size: clamp(34px, 6.2vw, 78px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper);
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  max-width: 46ch;
  margin: 22px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mute);
}

.page-faq .faq-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: clamp(18px, 2.4vw, 26px) 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-tab {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 15px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--paper);
  text-decoration: none;
  background: var(--glass-1);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  transition: transform 200ms var(--ease), background-color 200ms var(--ease),
    border-color 200ms var(--ease);
}

.page-faq .faq-tab__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mute);
  transition: color 200ms var(--ease);
}

.page-faq .faq-tab:hover,
.page-faq .faq-tab:focus-visible {
  transform: translateY(-2px);
  background: var(--glass-2);
  border-color: var(--cyan);
}

.page-faq .faq-tab:hover .faq-tab__num,
.page-faq .faq-tab:focus-visible .faq-tab__num {
  color: var(--cyan);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding-block: clamp(38px, 5.5vw, 68px);
  border-top: 1px solid var(--line);
  scroll-margin-top: clamp(20px, 4vw, 40px);
}

.page-faq .faq-group__num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(46px, 8vw, 88px);
  font-weight: 800;
  line-height: 0.86;
  letter-spacing: -0.03em;
  color: transparent;
  -webkit-text-stroke: 1px var(--stone);
  padding-bottom: 8px;
}

.page-faq .faq-group__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__note {
  max-width: 30ch;
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mute);
}

.page-faq .faq-group__body {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 26px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-faq .faq-figure .media__cap {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--mute);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 17px 2px;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
  transition: color 200ms var(--ease);
}

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

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

.page-faq .qa__idx {
  flex: none;
  min-width: 2.2em;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mute);
  transition: color 200ms var(--ease);
}

.page-faq .qa:hover .qa__idx,
.page-faq .qa[open] .qa__idx {
  color: var(--cyan);
}

.page-faq .qa[open] .qa__q {
  color: var(--paper);
}

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

.page-faq .qa__a {
  margin-left: 2px;
  padding: 2px 0 20px 20px;
  border-left: 3px solid var(--cyan);
}

.page-faq .qa__a p {
  max-width: 44ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mute);
}

.page-faq .qa__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--faq-cyan-soft);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .qa__link::after {
  content: "→";
  font-family: var(--font-body);
  transition: transform 200ms var(--ease);
}

.page-faq .qa__link:hover,
.page-faq .qa__link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

.page-faq .qa__link:hover::after,
.page-faq .qa__link:focus-visible::after {
  transform: translateX(3px);
}

/* ---------- 滚动进入 ---------- */
.page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 520ms var(--ease) var(--rd, 0ms),
    transform 520ms var(--ease) var(--rd, 0ms);
}

.page-faq [data-reveal].is-visible,
.page-faq:not(.is-js) .page-faq [data-reveal] {
  opacity: 1;
  transform: none;
}

/* ---------- 桌面端两栏 ---------- */
@media (min-width: 880px) {
  .page-faq .faq-group {
    grid-template-columns: var(--faq-idx-w) minmax(0, 1fr);
    gap: clamp(30px, 4.4vw, 68px);
    align-items: start;
  }

  .page-faq .faq-group__head {
    position: sticky;
    top: clamp(24px, 4vw, 44px);
  }

  .page-faq .faq-group__body {
    max-width: 720px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero {
    padding-right: 6%;
  }
}
<<<END>>>

.page-faq {
  --rd: 0.3s;
}