.page-faq {
  --faq-nav-w: 252px;
  --faq-gap: clamp(22px, 3vw, 40px);
  --faq-sticky: calc(var(--header-h) + 20px);
  --faq-note-bg: rgba(127, 212, 240, 0.10);
  background: var(--bg);
  color: var(--fg);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(24px, 4vw, 40px);
  border-bottom: 2px solid var(--line-strong);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 100%;
  opacity: 0.55;
  pointer-events: none;
}

.page-faq .faq-hero > * {
  position: relative;
}

.page-faq .faq-hero__kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 16px;
  max-width: 20ch;
  font-family: var(--ff-display);
  font-size: var(--fs-h1);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__lead {
  max-width: 64ch;
  margin: 0;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--ice-pale);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(20px, 3vw, 32px);
  background: var(--line);
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
}

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

.page-faq .faq-stat__num {
  font-family: var(--ff-mono);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-stat__label {
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--steel);
}

.page-faq .faq-shell {
  display: grid;
  gap: var(--faq-gap);
  padding-top: clamp(20px, 3vw, 36px);
}

/* 分类导航 */
.page-faq .faq-nav {
  border: 2px solid var(--line-strong);
  background: var(--ice-deep);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-nav__head {
  display: flex;
  align-items: center;
  padding: 10px 14px;
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-nav__list {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-nav__list > li {
  flex: none;
}

.page-faq .faq-nav__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-bottom: 4px solid transparent;
  color: var(--ice-pale);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur) linear, color var(--dur) linear;
}

.page-faq .faq-nav__link:hover {
  background: var(--ice-mid);
  color: var(--ice-white);
}

.page-faq .faq-nav__no {
  font-family: var(--ff-mono);
  font-size: 0.76rem;
  color: var(--ice-light);
}

.page-faq .faq-nav__name {
  font-weight: 700;
  font-size: 0.94rem;
}

.page-faq .faq-nav__count {
  font-family: var(--ff-mono);
  font-size: 0.76rem;
  color: var(--steel);
}

.page-faq .faq-nav__link[aria-current="true"] {
  background: var(--ice-mid);
  color: var(--neon);
  border-bottom-color: var(--neon);
}

.page-faq .faq-nav__link[aria-current="true"] .faq-nav__no,
.page-faq .faq-nav__link[aria-current="true"] .faq-nav__count {
  color: var(--neon);
}

/* 问题区块 */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-section {
  scroll-margin-top: calc(var(--header-h) + 20px);
  padding-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 10px;
  margin-bottom: 4px;
  border-bottom: 2px solid var(--line-strong);
}

.page-faq .faq-section__head h2 {
  margin: 0;
  font-family: var(--ff-display);
  font-size: var(--fs-h2);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-faq .faq-section__count {
  margin-left: auto;
  font-family: var(--ff-mono);
  font-size: 0.78rem;
  color: var(--steel);
  white-space: nowrap;
}

.page-faq .faq-item {
  border-bottom: 2px solid var(--line);
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 8px;
  cursor: pointer;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.5;
  list-style: none;
}

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

.page-faq .faq-item__q:hover {
  color: var(--ice-light);
}

.page-faq .faq-item[open] .faq-item__q {
  color: var(--neon);
}

.page-faq .faq-item__no {
  flex: none;
  padding-top: 0.22em;
  font-family: var(--ff-mono);
  font-size: 0.8rem;
  color: var(--ice-light);
}

.page-faq .faq-item[open] .faq-item__no {
  color: var(--neon);
}

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

.page-faq .faq-item__sign {
  position: relative;
  flex: none;
  width: 15px;
  height: 15px;
  margin-top: 0.32em;
  color: var(--ice-light);
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: currentColor;
}

.page-faq .faq-item__sign::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  margin-top: -1px;
}

.page-faq .faq-item__sign::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  margin-left: -1px;
  transition: opacity var(--dur) linear;
}

.page-faq .faq-item[open] .faq-item__sign::after {
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 0 8px 18px 32px;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--ice-pale);
}

.page-faq .faq-item__body p {
  margin: 0;
}

.page-faq .faq-item__lead {
  display: block;
  margin-bottom: 6px;
  font-weight: 700;
  color: var(--ice-white);
}

/* 摘要条 */
.page-faq .faq-note {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 4px 0 clamp(24px, 4vw, 40px);
  padding: 14px 18px;
  background: var(--faq-note-bg);
  border-left: 4px solid var(--neon);
}

.page-faq .faq-note__mark {
  flex: none;
  width: 10px;
  height: 10px;
  margin-top: 0.5em;
  background: var(--neon);
}

.page-faq .faq-note p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--ice-white);
}

/* 图文 */
.page-faq .faq-figure {
  display: grid;
  gap: 12px;
  margin: clamp(16px, 2.5vw, 26px) 0 0;
}

.page-faq .faq-figure img,
.page-faq .faq-end__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
  background: var(--ice-mid);
}

.page-faq .faq-figure__caption {
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--steel);
}

/* 结尾 */
.page-faq .faq-end {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(12px, 2vw, 20px);
  padding-top: clamp(22px, 3vw, 34px);
  border-top: 2px solid var(--line-strong);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-end h2 {
  margin: 0 0 12px;
  font-family: var(--ff-display);
  font-size: var(--fs-h2);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-faq .faq-end__text p {
  margin: 0 0 14px;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--ice-pale);
}

.page-faq .faq-end__links {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--line);
}

.page-faq .faq-end__links li {
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-end__links a {
  display: block;
  padding: 12px 4px;
  font-weight: 700;
  color: var(--ice-light);
  text-decoration: none;
}

.page-faq .faq-end__links a:hover {
  color: var(--neon);
  background: var(--ice-deep);
}

.page-faq .faq-end__mail {
  font-size: 0.92rem;
  color: var(--ice-white);
}

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

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

@media (min-width: 720px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-figure {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: end;
    gap: 18px;
  }

  .page-faq .faq-end {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-nav-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-nav {
    position: sticky;
    top: var(--faq-sticky);
    max-height: calc(100vh - var(--header-h) - 40px);
    overflow-y: auto;
  }

  .page-faq .faq-nav__list {
    flex-direction: column;
    overflow: visible;
  }

  .page-faq .faq-nav__link {
    padding: 13px 16px;
    border-bottom: 0;
    border-left: 4px solid transparent;
  }

  .page-faq .faq-nav__link[aria-current="true"] {
    border-left-color: var(--neon);
  }

  .page-faq .faq-item__q {
    padding: 16px 10px;
    font-size: 1.06rem;
  }

  .page-faq .faq-item__body {
    padding: 0 10px 20px 34px;
  }
}
<<<END>>>