.page-faq {
  --faq-row-bg: #ffffff;
  --faq-hero-glow: rgba(200, 255, 61, .18);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 56px) 0 clamp(34px, 6vw, 80px);
  background: var(--ink);
  color: var(--paper);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -12%;
  right: -14%;
  width: 52%;
  height: 128%;
  background: linear-gradient(160deg, var(--faq-hero-glow), rgba(200, 255, 61, 0) 62%);
  transform: skewX(-8deg);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -26%;
  bottom: -56%;
  width: 78vw;
  height: 78vw;
  max-width: 720px;
  max-height: 720px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(200, 255, 61, .16), rgba(200, 255, 61, 0) 64%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

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

.page-faq .faq-hero__title {
  margin: 10px 0 0;
  max-width: 18ch;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 8.4vw, 5.2rem);
  line-height: 1.02;
  letter-spacing: -.02em;
  text-transform: none;
}

.page-faq .faq-hero__accent {
  display: inline;
  color: var(--neon);
}

.page-faq .faq-hero__lede {
  margin-top: clamp(16px, 2.4vw, 26px);
  max-width: 58ch;
  color: var(--mist);
  font-size: var(--fs-16);
  line-height: var(--line);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: 10px;
  margin: clamp(22px, 3.4vw, 38px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__stats .stat {
  padding: 12px 14px;
  border-left: 3px solid var(--neon);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: rgba(243, 246, 236, .06);
}

.page-faq .faq-hero__stats .stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-32);
  line-height: 1.1;
  color: var(--neon);
}

.page-faq .faq-hero__stats .stat__unit {
  display: block;
  margin-top: 4px;
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--mist);
}

/* ---------- 场景索引 ---------- */
.page-faq .faq-index__head {
  max-width: 62ch;
}

.page-faq .faq-rows {
  display: grid;
  gap: 12px;
  margin: clamp(22px, 3.4vw, 36px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: 10px 14px;
  padding: 16px 16px 16px 14px;
  background: var(--faq-row-bg);
  border: 1px solid var(--mist);
  border-left: 4px solid var(--mist);
  border-radius: var(--radius-m);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}

.page-faq .faq-row:hover,
.page-faq .faq-row:focus-within {
  transform: translateY(-4px);
  border-left-color: var(--neon-deep);
  box-shadow: var(--shadow-1);
}

.page-faq .faq-row__num {
  padding-top: 2px;
  font-size: var(--fs-14);
  letter-spacing: .08em;
  color: var(--sage);
}

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

.page-faq .faq-row__body h3 {
  margin: 0 0 6px;
  font-size: var(--fs-18);
  line-height: 1.35;
  color: var(--ink);
}

.page-faq .faq-row__body p {
  margin: 0;
  max-width: 42ch;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--sage);
}

.page-faq .faq-row .tag {
  white-space: nowrap;
  align-self: start;
}

/* ---------- 高频问答 ---------- */
.page-faq .faq-qa__head {
  max-width: 64ch;
}

.page-faq .faq-qa__grid {
  display: grid;
  gap: 12px;
  margin: clamp(22px, 3.4vw, 36px) 0 0;
}

.page-faq .faq-item {
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--mist);
  border-radius: var(--radius-m);
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--neon-deep);
  box-shadow: var(--shadow-1);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 16px;
  font-size: var(--fs-16);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: -2px;
  border-radius: var(--radius-m);
}

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 20px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--neon);
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--ink);
  border-radius: 2px;
}

.page-faq .faq-item__sign::before {
  left: 5px;
  right: 5px;
  top: 9px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  top: 5px;
  bottom: 5px;
  left: 9px;
  width: 2px;
  transition: opacity .2s var(--ease);
}

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

.page-faq .faq-item__a {
  padding: 0 16px 16px;
  font-size: var(--fs-16);
  line-height: var(--line);
  color: var(--sage);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 60ch;
}

/* ---------- 设备说明 ---------- */
.page-faq .faq-device__grid {
  display: grid;
  gap: clamp(22px, 3.6vw, 40px);
}

.page-faq .faq-device__figure {
  margin: 0;
  border-radius: var(--radius-l);
  overflow: hidden;
}

.page-faq .faq-device__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-device__body .lede {
  max-width: 52ch;
  color: var(--mist);
}

.page-faq .faq-specs {
  display: grid;
  gap: 14px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-specs li {
  padding-left: 14px;
  border-left: 3px solid var(--amber);
}

.page-faq .faq-specs strong {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: .08em;
  color: var(--amber);
}

.page-faq .faq-specs span {
  display: block;
  margin-top: 4px;
  max-width: 48ch;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-device__note {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--sage);
}

/* ---------- 数据读法 ---------- */
.page-faq .faq-read__grid {
  display: grid;
  gap: clamp(22px, 3.6vw, 44px);
}

.page-faq .faq-read__body .lede {
  max-width: 54ch;
}

.page-faq .faq-read__steps {
  display: grid;
  gap: 10px;
  margin: clamp(20px, 3vw, 30px) 0 0;
}

.page-faq .faq-read__step {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  background: var(--mist);
  border-radius: var(--radius-s);
}

.page-faq .faq-read__step .mono {
  font-size: var(--fs-14);
  letter-spacing: .08em;
  color: var(--green);
  font-weight: 700;
}

.page-faq .faq-read__step p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-read__figure {
  margin: 0;
  border-radius: var(--radius-l);
  overflow: hidden;
}

.page-faq .faq-read__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 收尾 ---------- */
.page-faq .faq-close__inner {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

.page-faq .faq-close__body {
  max-width: 60ch;
}

.page-faq .faq-close__body .lede {
  color: var(--mist);
}

.page-faq .faq-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-start;
}

/* ---------- 自适应 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-qa__grid {
    grid-template-columns: 1fr 1fr;
    column-gap: 18px;
  }

  .page-faq .faq-close__inner {
    grid-template-columns: 1fr auto;
    align-items: end;
  }

  .page-faq .faq-close__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-rows {
    grid-template-columns: 1fr 1fr;
    gap: 16px 20px;
  }

  .page-faq .faq-row:nth-child(2n) {
    margin-top: 30px;
  }

  .page-faq .faq-row {
    padding: 20px 20px 20px 18px;
  }

  .page-faq .faq-device__grid {
    grid-template-columns: 5fr 7fr;
    align-items: center;
  }

  .page-faq .faq-read__grid {
    grid-template-columns: 7fr 5fr;
    align-items: center;
  }

  .page-faq .faq-read__figure {
    order: 2;
  }

  .page-faq .faq-read__steps {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hero__title {
    max-width: 15ch;
  }

  .page-faq .faq-item__q {
    padding: 18px 20px;
  }

  .page-faq .faq-item__a {
    padding: 0 20px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-row,
  .page-faq .faq-item,
  .page-faq .faq-item__sign::after {
    transition: none;
  }

  .page-faq .faq-row:hover,
  .page-faq .faq-row:focus-within {
    transform: none;
  }
}
<<<END>>>