.page-faq {
  background:
    radial-gradient(70% 46% at 92% 4%, rgba(53, 241, 200, 0.07), transparent 68%),
    radial-gradient(60% 40% at 4% 96%, rgba(255, 90, 54, 0.06), transparent 70%),
    var(--ink-1);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--sect) * 0.72) 0 var(--sect);
  border-bottom: 1px solid var(--glass-line);
  isolation: isolate;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(53, 241, 200, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(53, 241, 200, 0.06) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: radial-gradient(78% 74% at 26% 18%, #000 0%, transparent 76%);
  mask-image: radial-gradient(78% 74% at 26% 18%, #000 0%, transparent 76%);
  pointer-events: none;
  z-index: -1;
}

.page-faq .faq-hero .breadcrumbs {
  margin-bottom: clamp(1.6rem, 4vw, 2.6rem);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 2.25rem;
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(250px, 0.85fr);
    align-items: end;
    gap: clamp(2rem, 5vw, 4rem);
  }
}

.page-faq .faq-hero__lead .display {
  margin: 0.5rem 0 1.1rem;
  color: var(--paper);
}

.page-faq .faq-hero__lead .lede {
  color: var(--mist);
  max-width: 40ch;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.7rem;
}

/* 目录卡 */

.page-faq .faq-toc {
  border: 1px solid var(--cyan-line);
  border-radius: var(--radius);
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 1.15rem 1.3rem 1.35rem;
  box-shadow: var(--shadow-lift);
}

.page-faq .faq-toc__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-data);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.1rem;
  counter-reset: toc;
}

.page-faq .faq-toc__list > li + li {
  border-top: 1px dashed rgba(154, 184, 176, 0.2);
}

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.55rem 0;
  color: var(--paper);
  text-decoration: none;
  font-size: 0.93rem;
  line-height: 1.5;
  transition: color var(--speed), padding-left var(--speed);
}

.page-faq .faq-toc__link::before {
  counter-increment: toc;
  content: counter(toc, decimal-leading-zero);
  font-family: var(--font-data);
  font-size: 0.76rem;
  color: var(--flame-soft);
  flex: none;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--cyan);
  padding-left: 0.35rem;
}

/* ---------- 通用小节标题 ---------- */

.page-faq .section-head {
  max-width: 46ch;
  margin-bottom: clamp(1.6rem, 4vw, 2.4rem);
}

.page-faq .section-head .lede {
  color: var(--mist);
  margin-top: 0.6rem;
}

.page-faq .entry-main .prose,
.page-faq .metric-body .prose,
.page-faq .search-panel__body .prose {
  color: var(--mist);
}

/* ---------- 词典入口 ---------- */

.page-faq .entry-grid {
  display: grid;
  gap: 2.4rem;
}

@media (min-width: 960px) {
  .page-faq .entry-grid {
    grid-template-columns: minmax(0, 1.62fr) minmax(260px, 0.88fr);
    gap: clamp(2rem, 5vw, 3.6rem);
    align-items: start;
  }
}

.page-faq .entry-main .media-frame {
  margin-top: clamp(1.7rem, 4vw, 2.4rem);
}

.page-faq .entry-index {
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
  background: linear-gradient(170deg, rgba(53, 241, 200, 0.08), rgba(255, 255, 255, 0.02));
  padding: 1.3rem 1.35rem 1.5rem;
}

@media (min-width: 960px) {
  .page-faq .entry-index {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }
}

.page-faq .entry-index .title-m {
  margin: 0 0 0.9rem;
  color: var(--cyan-soft);
}

.page-faq .entry-index .index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .entry-index .index-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num title"
    "num meta";
  column-gap: 0.75rem;
  row-gap: 0.15rem;
  align-items: start;
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(154, 184, 176, 0.16);
}

.page-faq .entry-index .index-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .entry-index .index-item__num {
  grid-area: num;
  font-family: var(--font-data);
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  color: var(--flame);
  padding-top: 0.15rem;
}

.page-faq .entry-index .index-item__title {
  grid-area: title;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--paper);
}

.page-faq .entry-index .index-item__meta {
  grid-area: meta;
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .entry-index .note {
  margin-top: 1.1rem;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--mist);
  border-left: 2px solid var(--cyan-line);
  padding-left: 0.75rem;
}

/* ---------- 术语筛选与卡片 ---------- */

.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: clamp(1.4rem, 3vw, 2rem);
}

.page-faq .filter-btn {
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 0.45rem 1.05rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--glass-line);
  background: var(--glass);
  color: var(--paper);
  cursor: pointer;
  transition: background var(--speed), border-color var(--speed), color var(--speed);
}

.page-faq .filter-btn:hover {
  border-color: var(--cyan-line);
}

.page-faq .filter-btn[aria-pressed="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-1);
  font-weight: 700;
}

.page-faq .filter-btn:focus-visible {
  outline: 2px solid var(--flame);
  outline-offset: 2px;
}

.page-faq .term-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

@media (min-width: 640px) {
  .page-faq .term-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-faq .term-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.15rem;
  }
}

.page-faq .term-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.2rem 1.25rem 1.3rem;
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
  background: linear-gradient(158deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.018));
  overflow: hidden;
  transition: transform var(--speed), border-color var(--speed);
}

.page-faq .term-card::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), rgba(53, 241, 200, 0));
  opacity: 0;
  transition: opacity var(--speed);
}

.page-faq .term-card:hover {
  transform: translateY(-4px);
  border-color: var(--cyan-line);
}

.page-faq .term-card:hover::after {
  opacity: 1;
}

.page-faq .term-card[hidden] {
  display: none;
}

.page-faq .term-card__num {
  font-family: var(--font-data);
  font-size: 0.76rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.09em;
  color: var(--mist);
}

.page-faq .term-card__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.35rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .term-card__def {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .term-card__use {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--cyan-soft);
  border-top: 1px dashed rgba(53, 241, 200, 0.24);
  padding-top: 0.6rem;
}

.page-faq .term-card .tag {
  align-self: flex-start;
  margin-top: auto;
  font-family: var(--font-data);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--flame-line);
  color: var(--flame-soft);
  background: rgba(255, 90, 54, 0.08);
}

/* ---------- 数字读法 ---------- */

.page-faq .metric-layout {
  display: grid;
  gap: 2.4rem;
}

@media (min-width: 920px) {
  .page-faq .metric-layout {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: clamp(2rem, 5vw, 3.6rem);
    align-items: center;
  }
}

.page-faq .metric-list {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.25rem;
}

.page-faq .metric-item {
  padding: 0.95rem 0 0.95rem 1.05rem;
  border-left: 2px solid var(--cyan-line);
  transition: border-color var(--speed), background var(--speed);
}

.page-faq .metric-item:nth-child(even) {
  border-left-color: var(--flame-line);
}

.page-faq .metric-item:hover {
  background: rgba(255, 255, 255, 0.035);
  border-left-color: var(--cyan);
}

.page-faq .metric-item__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.85rem;
  margin-bottom: 0.35rem;
}

.page-faq .metric-item__name {
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--paper);
}

.page-faq .metric-item__val {
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--flame-soft);
}

.page-faq .metric-item__desc {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 四步教程 ---------- */

.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.9rem;
}

@media (min-width: 700px) {
  .page-faq .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-faq .steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
  }
}

.page-faq .faq-step {
  position: relative;
  padding: 1.3rem 1.2rem 1.35rem;
  border-radius: var(--radius);
  border: 1px solid var(--glass-line);
  background: var(--ink-2);
  overflow: hidden;
  transition: transform var(--speed), border-color var(--speed);
}

@media (min-width: 1080px) {
  .page-faq .faq-step:nth-child(even) {
    transform: translateY(18px);
  }

  .page-faq .faq-step:nth-child(even):hover {
    transform: translateY(12px);
  }
}

.page-faq .faq-step:hover {
  border-color: var(--cyan-line);
}

.page-faq .faq-step__num {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(1.6rem, 4vw, 2.1rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(53, 241, 200, 0.55);
  margin-bottom: 0.7rem;
}

.page-faq .faq-step__title {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.14rem;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-list {
  display: grid;
  gap: 0.7rem;
}

.page-faq .faq-item {
  border: 1px solid var(--glass-line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.035);
  overflow: hidden;
  transition: border-color var(--speed), background var(--speed);
}

.page-faq .faq-item[open] {
  border-color: var(--cyan-line);
  background: rgba(53, 241, 200, 0.06);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--paper);
  list-style: none;
}

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

.page-faq .faq-item__q::after {
  content: "+";
  flex: none;
  font-family: var(--font-data);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
  color: var(--flame);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .faq-item__a {
  margin: 0;
  padding: 0 1.1rem 1.1rem;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-tail {
  margin: 1.5rem 0 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-tail a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}

.page-faq .faq-tail a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 索引与检索 ---------- */

.page-faq .search-panel {
  display: grid;
  gap: 2rem;
  padding: clamp(1.4rem, 4vw, 2.4rem);
  border-radius: var(--radius);
  border: 1px solid var(--glass-line);
  background:
    linear-gradient(140deg, rgba(255, 90, 54, 0.08), rgba(53, 241, 200, 0.05) 45%, rgba(255, 255, 255, 0.02));
}

@media (min-width: 940px) {
  .page-faq .search-panel {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: clamp(2rem, 5vw, 3.4rem);
    align-items: start;
  }
}

.page-faq .keyword-row {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1.4rem 0 0;
  padding: 0;
}

.page-faq .keyword-chip {
  font-size: 0.85rem;
  padding: 0.32rem 0.8rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 178, 122, 0.32);
  background: rgba(255, 178, 122, 0.08);
  color: var(--flame-soft);
}

.page-faq .letter-panel {
  border-left: 0;
  padding-left: 0;
}

@media (min-width: 940px) {
  .page-faq .letter-panel {
    border-left: 1px solid var(--glass-line);
    padding-left: clamp(1.4rem, 3vw, 2.2rem);
  }
}

.page-faq .letter-panel .title-m {
  margin: 0 0 0.9rem;
  color: var(--cyan-soft);
}

.page-faq .letter-grid {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
}

.page-faq .letter-chip {
  min-width: 2.2rem;
  text-align: center;
  font-family: var(--font-data);
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
  padding: 0.38rem 0.45rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-line);
  background: var(--glass);
  color: var(--paper);
  transition: border-color var(--speed), color var(--speed);
}

.page-faq .letter-chip:hover {
  border-color: var(--cyan-line);
  color: var(--cyan);
}

.page-faq .letter-panel .note {
  margin: 1.2rem 0 0;
  font-size: 0.86rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .letter-panel .note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .term-card,
  .page-faq .faq-step,
  .page-faq .metric-item,
  .page-faq .faq-toc__link,
  .page-faq .filter-btn,
  .page-faq .letter-chip {
    transition: none;
  }

  .page-faq .term-card:hover {
    transform: none;
  }

  @media (min-width: 1080px) {
    .page-faq .faq-step:nth-child(even),
    .page-faq .faq-step:nth-child(even):hover {
      transform: none;
    }
  }
}
<<<END>>>