.page-faq {
  --faq-rail: 292px;
  --faq-radius: 6px;
  --faq-gap: clamp(1.5rem, 3vw, 3rem);
  background: var(--cv-ink);
  color: var(--cv-fog);
}

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid var(--cv-line-soft);
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-faq .faq-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  filter: saturate(0.85);
}

.page-faq .faq-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(58% 72% at 82% 6%, rgba(47, 107, 255, 0.32), transparent 72%),
    radial-gradient(46% 58% at 8% 92%, rgba(57, 245, 200, 0.16), transparent 72%),
    linear-gradient(180deg, rgba(7, 19, 31, 0.4) 0%, rgba(7, 19, 31, 0.88) 60%, var(--cv-ink) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    116deg,
    rgba(57, 245, 200, 0.06) 0 1px,
    transparent 1px 108px
  );
}

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

.page-faq .faq-hero__crumb {
  color: var(--cv-steel);
}

.page-faq .faq-hero__title {
  margin: 0.6rem 0 0;
  max-width: 18em;
  font-family: var(--cv-display);
  font-size: clamp(1.9rem, 5.4vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
  color: var(--cv-fog);
}

.page-faq .faq-hero__lede {
  margin-top: 1rem;
  max-width: 54ch;
  color: var(--cv-steel);
}

/* 顶部三条快捷 */
.page-faq .faq-quick {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
}

.page-faq .faq-quick__item {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num title"
    "num text";
  column-gap: 0.9rem;
  padding: 1rem 1.1rem;
  text-decoration: none;
  color: inherit;
  background: linear-gradient(150deg, rgba(18, 40, 58, 0.82), rgba(14, 21, 27, 0.72));
  border: 1px solid var(--cv-line-soft);
  border-left: 2px solid rgba(57, 245, 200, 0.42);
  border-radius: var(--faq-radius);
  transition: border-color 0.25s var(--cv-ease), transform 0.25s var(--cv-ease);
}

.page-faq .faq-quick__item:hover,
.page-faq .faq-quick__item:focus-visible {
  border-left-color: var(--cv-mint);
  transform: translateY(-2px);
}

.page-faq .faq-quick__num {
  grid-area: num;
  align-self: start;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--cv-mint);
  transform: skewX(-3deg);
}

.page-faq .faq-quick__title {
  grid-area: title;
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cv-fog);
}

.page-faq .faq-quick__text {
  grid-area: text;
  margin-top: 0.3rem;
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--cv-steel);
}

/* ---------- Body 布局 ---------- */
.page-faq .faq-body {
  padding-top: clamp(2rem, 4vw, 3.5rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: start;
}

/* ---------- 左侧导航 ---------- */
.page-faq .faq-rail__sticky {
  display: grid;
  gap: 1.25rem;
}

.page-faq .faq-toc {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--cv-line-soft);
}

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.7rem 0 0.7rem 0.85rem;
  border-left: 1px solid var(--cv-line-soft);
  color: var(--cv-steel);
  font-size: 0.9rem;
  line-height: 1.45;
  text-decoration: none;
  transition: color 0.2s var(--cv-ease), border-color 0.2s var(--cv-ease), background 0.2s var(--cv-ease);
}

.page-faq .faq-toc__link .cv-mono {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: rgba(57, 245, 200, 0.7);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--cv-fog);
  border-left-color: var(--cv-mint);
}

.page-faq .faq-toc__link[aria-current="true"] {
  color: var(--cv-fog);
  border-left: 2px solid var(--cv-mint);
  background: linear-gradient(90deg, rgba(57, 245, 200, 0.1), transparent 70%);
}

.page-faq .faq-toc__link[aria-current="true"] .cv-mono {
  color: var(--cv-mint);
}

.page-faq .faq-filter__btns {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.6rem;
}

.page-faq .faq-filter .cv-filter__btn {
  padding: 0.42rem 0.8rem;
  font-size: 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--cv-line-soft);
  background: transparent;
  color: var(--cv-steel);
  cursor: pointer;
  transition: color 0.2s var(--cv-ease), border-color 0.2s var(--cv-ease), background 0.2s var(--cv-ease);
}

.page-faq .faq-filter .cv-filter__btn:hover {
  color: var(--cv-fog);
  border-color: rgba(57, 245, 200, 0.5);
}

.page-faq .faq-filter .cv-filter__btn.is-active {
  color: var(--cv-ink);
  background: var(--cv-mint);
  border-color: var(--cv-mint);
  font-weight: 700;
}

.page-faq .faq-rail__card {
  padding: 1.1rem;
}

.page-faq .faq-rail__card .cv-card__index {
  color: var(--cv-mint);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
}

.page-faq .faq-rail__btn {
  margin-top: 0.85rem;
  display: inline-block;
  padding: 0.5rem 0.9rem;
  font-size: 0.82rem;
  text-decoration: none;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-main {
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 6.5rem;
  padding-top: 0.25rem;
}

.page-faq .faq-group + .faq-group {
  border-top: 1px solid var(--cv-line-soft);
  padding-top: clamp(1.6rem, 3vw, 2.4rem);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  column-gap: 0.8rem;
  row-gap: 0.35rem;
}

.page-faq .faq-group__num {
  font-size: clamp(1.35rem, 3.4vw, 2rem);
  line-height: 1;
  color: var(--cv-mint);
  letter-spacing: 0.02em;
  transform: skewX(-3deg);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--cv-display);
  font-size: clamp(1.15rem, 2.6vw, 1.5rem);
  letter-spacing: -0.03em;
  color: var(--cv-fog);
}

.page-faq .faq-group__note {
  grid-column: 1 / -1;
  margin: 0.15rem 0 0;
  max-width: 46ch;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--cv-steel);
}

/* ---------- 三步编号条 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.page-faq .faq-step {
  position: relative;
  padding: 1rem 1rem 1.1rem;
  background: linear-gradient(160deg, rgba(18, 40, 58, 0.9), rgba(14, 21, 27, 0.66));
  border: 1px solid var(--cv-line-soft);
  border-top: 2px solid rgba(57, 245, 200, 0.55);
  border-radius: var(--faq-radius);
}

.page-faq .faq-step__num {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--cv-mint);
}

.page-faq .faq-step__title {
  margin: 0.45rem 0 0;
  font-size: 0.97rem;
  line-height: 1.45;
  color: var(--cv-fog);
}

.page-faq .faq-step__text {
  margin: 0.45rem 0 0;
  font-size: 0.86rem;
  line-height: 1.68;
  color: var(--cv-steel);
}

/* ---------- 状态灯图例 ---------- */
.page-faq .faq-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
  margin-top: 1.3rem;
  padding: 0.7rem 1rem;
  border: 1px dashed rgba(57, 245, 200, 0.28);
  border-radius: var(--faq-radius);
  background: rgba(18, 40, 58, 0.45);
}

.page-faq .faq-legend__item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--cv-steel);
}

.page-faq .faq-legend__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.page-faq .faq-legend__dot--pulse {
  background: var(--cv-mint);
  animation: faq-pulse 2.4s infinite ease-in-out;
}

.page-faq .faq-legend__dot--steady {
  background: var(--cv-mint-soft);
}

.page-faq .faq-legend__dot--idle {
  background: transparent;
  border: 1px solid var(--cv-steel);
}

@keyframes faq-pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(57, 245, 200, 0.45); }
  50% { opacity: 0.55; box-shadow: 0 0 0 5px rgba(57, 245, 200, 0); }
}

/* ---------- 折叠问答卡 ---------- */
.page-faq .faq-q-list {
  display: grid;
  gap: 0.6rem;
  margin-top: 1.4rem;
}

.page-faq .faq-q {
  border: 1px solid var(--cv-line-soft);
  border-radius: var(--faq-radius);
  background: linear-gradient(155deg, rgba(18, 40, 58, 0.62), rgba(14, 21, 27, 0.62));
  transition: border-color 0.2s var(--cv-ease), background 0.2s var(--cv-ease);
}

.page-faq .faq-q:hover {
  border-color: rgba(57, 245, 200, 0.36);
}

.page-faq .faq-q[open] {
  border-color: rgba(57, 245, 200, 0.5);
  background: linear-gradient(155deg, rgba(18, 40, 58, 0.9), rgba(14, 21, 27, 0.8));
}

.page-faq .faq-q__summary {
  list-style: none;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1rem;
  cursor: pointer;
}

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

.page-faq .faq-q__summary:focus-visible {
  outline: 2px solid var(--cv-mint);
  outline-offset: 2px;
}

.page-faq .faq-q__title {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--cv-fog);
}

.page-faq .faq-q__summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--cv-mono);
  font-size: 1.05rem;
  line-height: 1.2;
  color: var(--cv-mint);
  transition: transform 0.25s var(--cv-ease), color 0.25s var(--cv-ease);
}

.page-faq .faq-q[open] .faq-q__summary::after {
  content: "−";
  color: var(--cv-mint-soft);
}

.page-faq .faq-q__body {
  padding: 0 1rem 1.05rem;
  border-top: 1px solid var(--cv-line-soft);
  margin: 0 1rem;
  padding-left: 0;
  padding-right: 0;
  animation: faq-fade 0.28s var(--cv-ease) both;
}

.page-faq .faq-q__body p {
  margin: 0.7rem 0 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--cv-steel);
  max-width: 62ch;
}

@keyframes faq-fade {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 家庭场景 ---------- */
.page-faq .faq-family__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1.35rem;
  padding: 1.1rem;
  border: 1px solid var(--cv-line);
  border-radius: var(--faq-radius);
  background:
    radial-gradient(80% 120% at 100% 0%, rgba(47, 107, 255, 0.22), transparent 65%),
    linear-gradient(160deg, rgba(18, 40, 58, 0.85), rgba(14, 21, 27, 0.7));
}

.page-faq .faq-family__text p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--cv-fog);
  max-width: 56ch;
}

.page-faq .faq-flow {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-faq .faq-flow li {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  padding-left: 0.7rem;
  border-left: 1px solid var(--cv-line);
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--cv-steel);
}

.page-faq .faq-flow .cv-mono {
  color: var(--cv-mint);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
}

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

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--faq-radius);
  border: 1px solid var(--cv-line-soft);
}

.page-faq .faq-figure figcaption {
  margin-top: 0.5rem;
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--cv-steel);
}

/* ---------- 联系渠道 ---------- */
.page-faq .faq-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.page-faq .faq-channel {
  padding: 0.95rem 1rem;
  border: 1px solid var(--cv-line-soft);
  border-left: 2px solid var(--cv-flare);
  border-radius: var(--faq-radius);
  background: rgba(18, 40, 58, 0.5);
}

.page-faq .faq-channel__value {
  margin: 0.4rem 0 0;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--cv-fog);
  word-break: break-word;
}

.page-faq .faq-channel__meta {
  margin: 0.4rem 0 0;
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--cv-steel);
}

.page-faq .faq-more {
  margin: 1.3rem 0 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--cv-steel);
}

.page-faq .faq-more a {
  color: var(--cv-mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 245, 200, 0.4);
}

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

/* ---------- 返回顶部 ---------- */
.page-faq .faq-top-link {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 20;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  font-family: var(--cv-mono);
  font-size: 1rem;
  color: var(--cv-mint);
  text-decoration: none;
  background: rgba(7, 19, 31, 0.9);
  border: 1px solid var(--cv-line);
  border-radius: 4px;
  transition: color 0.2s var(--cv-ease), border-color 0.2s var(--cv-ease), transform 0.2s var(--cv-ease);
}

.page-faq .faq-top-link:hover,
.page-faq .faq-top-link:focus-visible {
  color: var(--cv-ink);
  background: var(--cv-mint);
  border-color: var(--cv-mint);
  transform: translateY(-2px);
}

/* 筛选后的隐藏兜底 */
.page-faq [data-filter-item][hidden],
.page-faq [data-filter-item].is-hidden {
  display: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-quick {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-channels {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-family__grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 1.5rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
  }

  .page-faq .faq-rail__sticky {
    position: sticky;
    top: 5.5rem;
  }

  .page-faq .faq-hero__title {
    max-width: 16em;
  }

  .page-faq .faq-top-link {
    right: 1.75rem;
    bottom: 1.75rem;
  }
}

@media (max-width: 400px) {
  .page-faq .faq-quick__item {
    grid-template-columns: 1fr;
    grid-template-areas:
      "num"
      "title"
      "text";
  }

  .page-faq .faq-quick__num {
    margin-bottom: 0.35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-legend__dot--pulse,
  .page-faq .faq-q__body {
    animation: none;
  }

  .page-faq .faq-quick__item:hover,
  .page-faq .faq-top-link:hover {
    transform: none;
  }
}
<<<END>>>