.page-faq {
  --faq-gutter: 22px;
}

/* 首屏 */
.page-faq .guide-hero {
  display: grid;
  gap: 26px;
  padding: 26px 0 34px;
}

.page-faq .guide-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--cyan);
}

.page-faq .guide-hero__eyebrow::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--orange);
  transform: skewX(-18deg);
}

.page-faq .guide-hero h1 {
  margin: 0;
  max-width: 16ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.05rem, 6.4vw, 4.1rem);
  line-height: .98;
  letter-spacing: -.042em;
  color: var(--white);
}

.page-faq .guide-hero h1 em {
  font-style: normal;
  color: var(--cyan);
  text-shadow: 0 0 24px rgba(43, 242, 221, .35);
}

.page-faq .guide-hero__lead {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray);
}

.page-faq .guide-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .hero-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-faq .hero-stats li {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: var(--panel);
}

.page-faq .hero-stats b {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-faq .hero-stats span {
  font-size: 12px;
  line-height: 1.45;
  color: var(--gray);
}

/* 研究板骨架 */
.page-faq .faq-board {
  display: grid;
  gap: 28px;
  padding-bottom: 64px;
  align-items: start;
}

.page-faq .faq-side {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.page-faq .faq-body {
  display: grid;
  min-width: 0;
}

/* 章节索引 */
.page-faq .faq-index {
  min-width: 0;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--gray);
}

.page-faq .faq-index ol {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index li {
  flex: 0 0 auto;
}

.page-faq .faq-index a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  font-size: 13px;
  white-space: nowrap;
  color: var(--gray);
  text-decoration: none;
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-index a b {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  opacity: .75;
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--space);
  background: var(--cyan);
  border-color: var(--cyan);
  outline: none;
}

/* 名词速查纸卡 */
.page-faq .term-card {
  padding: 18px;
  color: var(--space);
  transform: rotate(-.3deg);
}

.page-faq .term-card__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  color: rgba(5, 11, 26, .6);
}

.page-faq .term-card dl {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-faq .term-card dt {
  font-size: 13px;
  font-weight: 700;
  color: var(--space);
}

.page-faq .term-card dd {
  margin: 2px 0 0;
  font-size: 12.5px;
  line-height: 1.62;
  color: rgba(5, 11, 26, .72);
}

/* 章节 */
.page-faq .faq-chapter {
  padding-top: 6px;
  scroll-margin-top: calc(var(--ticker-h) + 24px);
}

.page-faq .faq-chapter + .faq-chapter {
  margin-top: 46px;
}

.page-faq .faq-chapter__head {
  display: grid;
  gap: 10px;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-chapter__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--orange);
}

.page-faq .faq-chapter h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 3.6vw, 2rem);
  line-height: 1.16;
  letter-spacing: -.022em;
  color: var(--white);
}

.page-faq .faq-chapter__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--gray);
}

/* 对照卡片 */
.page-faq .map-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .map-card {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 16px;
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(10, 29, 42, .85), rgba(5, 11, 26, .55));
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-faq .map-card::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  width: 46px;
  height: 2px;
  background: var(--orange);
}

.page-faq .map-card:hover {
  border-color: var(--line);
  transform: translateY(-3px);
}

.page-faq .map-card h3 {
  margin: 0;
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
}

.page-faq .map-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--gray);
}

/* 提示条 */
.page-faq .chapter-note {
  margin: 20px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--cyan);
  background: rgba(43, 242, 221, .06);
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
}

/* 步骤 */
.page-faq .steps {
  list-style: none;
  counter-reset: step;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .steps > li {
  counter-increment: step;
  position: relative;
  padding-left: 42px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--gray);
}

.page-faq .steps > li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--grass);
  border: 1px solid rgba(75, 227, 122, .45);
  border-radius: 50%;
  background: rgba(75, 227, 122, .07);
}

.page-faq .steps > li strong {
  color: var(--white);
  font-weight: 700;
}

/* 手风琴问答 */
.page-faq .qa {
  margin-top: 12px;
  border: 1px solid var(--line-soft);
  border-left: 3px solid transparent;
  background: linear-gradient(180deg, rgba(10, 29, 42, .85), rgba(5, 11, 26, .55));
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .qa[open] {
  border-left-color: var(--cyan);
  background: linear-gradient(180deg, rgba(26, 18, 64, .62), rgba(10, 29, 42, .7));
}

.page-faq .qa__q {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 44px 15px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.48;
  color: var(--white);
}

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

.page-faq .qa__q::after {
  content: "";
  position: absolute;
  right: 19px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: translateY(-70%) rotate(45deg);
  transition: transform .22s var(--ease);
}

.page-faq .qa[open] .qa__q::after {
  transform: translateY(-30%) rotate(225deg);
}

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

.page-faq .qa__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-faq .qa__a {
  padding: 0 18px 18px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--gray);
}

.page-faq .qa__a p {
  margin: 0 0 10px;
}

.page-faq .qa__a p:last-child {
  margin-bottom: 0;
}

.page-faq .qa__a .steps {
  margin-top: 10px;
}

/* 安装四块 */
.page-faq .install-grid {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.page-faq .install-block {
  padding: 16px 18px;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--cyan);
  background: linear-gradient(180deg, rgba(10, 29, 42, .9), rgba(5, 11, 26, .5));
}

.page-faq .install-block h3 {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-faq .install-block p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--gray);
}

.page-faq .install-block .steps {
  gap: 10px;
}

.page-faq .install-block .steps > li {
  font-size: 13.5px;
  padding-left: 38px;
}

/* 图 */
.page-faq .faq-figure {
  margin: 22px 0 0;
  padding: 0;
}

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

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  line-height: 1.6;
  color: var(--gray);
}

/* 便签 */
.page-faq .note-card {
  margin-top: 18px;
  padding: 18px 20px;
  color: var(--space);
  border-left: 4px solid var(--orange);
}

.page-faq .note-card__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  color: rgba(5, 11, 26, .62);
}

.page-faq .note-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
}

.page-faq .note-card li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.68;
  color: rgba(5, 11, 26, .82);
}

.page-faq .note-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 7px;
  background: var(--grass);
}

/* 行动按钮组 */
.page-faq .help-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

/* 尾部延伸 */
.page-faq .guide-tail {
  margin-top: 48px;
  padding: 24px 20px;
  display: grid;
  gap: 14px;
  border: 1px solid var(--line);
  background: linear-gradient(115deg, rgba(26, 18, 64, .88) 0%, rgba(59, 14, 36, .58) 62%, rgba(5, 11, 26, .92) 100%);
}

.page-faq .guide-tail h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.6vw, 1.5rem);
  font-weight: 800;
  letter-spacing: -.015em;
  color: var(--white);
}

.page-faq .guide-tail__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
}

.page-faq .guide-tail__links a {
  font-size: 13.5px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 242, 221, .35);
  padding-bottom: 2px;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .guide-tail__links a:hover,
.page-faq .guide-tail__links a:focus-visible {
  border-bottom-color: var(--cyan);
  color: var(--white);
  outline: none;
}

/* 平板以上 */
@media (min-width: 680px) {
  .page-faq .map-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .install-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .guide-hero {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
    align-items: end;
    gap: 44px;
    padding: 38px 0 42px;
  }

  .page-faq .guide-hero__lead {
    font-size: 15.5px;
  }

  .page-faq .qa__q {
    font-size: 15.5px;
    padding: 17px 48px 17px 20px;
  }

  .page-faq .qa__a {
    padding: 0 22px 20px;
    font-size: 14.5px;
  }

  .page-faq .faq-chapter + .faq-chapter {
    margin-top: 56px;
  }
}

/* 桌面双栏 */
@media (min-width: 960px) {
  .page-faq .faq-board {
    grid-template-columns: 264px minmax(0, 1fr);
    gap: 46px;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--ticker-h) + 22px);
  }

  .page-faq .faq-index ol {
    display: grid;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index li {
    flex: none;
  }

  .page-faq .faq-index a {
    display: flex;
    align-items: baseline;
    border: none;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: 9px 12px;
    white-space: normal;
    line-height: 1.4;
  }

  .page-faq .faq-index a:hover,
  .page-faq .faq-index a:focus-visible {
    color: var(--cyan);
    background: rgba(43, 242, 221, .08);
    border-left-color: var(--cyan);
  }
}

@media (min-width: 1180px) {
  .page-faq .guide-hero {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .6fr);
  }
}
</
</PAGE_CSS>>