.page-faq {
  --fg-gap: 32px;
  --fg-index-w: 196px;
  --fg-note-w: 258px;
  --fg-word-bg: rgba(0, 229, 199, .12);
  color: var(--text);
}

/* 首屏 */
.page-faq .fg-hero {
  padding: 28px 0 8px;
}

.page-faq .fg-hero__title {
  max-width: 16ch;
  margin: .5rem 0 1.1rem;
}

.page-faq .fg-hero__lede {
  max-width: 60ch;
  color: var(--text-dim);
  font-size: 1.02rem;
  line-height: 1.75;
}

.page-faq .fg-hero__lede + .fg-hero__lede {
  margin-top: .7rem;
}

.page-faq .fg-stats {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 1.7rem;
}

.page-faq .fg-stat {
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  transition: border-color var(--fast) var(--ease);
}

.page-faq .fg-stat:hover {
  border-color: var(--line-strong);
}

.page-faq .fg-stat__num {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  letter-spacing: .04em;
  color: var(--cyan);
  line-height: 1.2;
}

.page-faq .fg-stat__label {
  margin-top: 4px;
  font-size: .8rem;
  color: var(--text-dim);
}

.page-faq .fg-hero__media {
  margin-top: 2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-800);
}

.page-faq .fg-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1600 / 560;
  object-fit: cover;
}

/* 三列命令台 */
.page-faq .fgrid {
  display: grid;
  gap: var(--fg-gap);
  padding-top: 40px;
}

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

/* 左侧索引 */
.page-faq .fg-index {
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
  border-radius: var(--radius-sm);
  background: var(--ink-800);
  padding: 15px 14px;
}

.page-faq .fg-index__head {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--rock);
  margin-bottom: 10px;
}

.page-faq .fg-index__nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.page-faq .fg-index__link {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  border-radius: var(--radius-sm);
  font-size: .88rem;
  color: var(--text-dim);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--fast) var(--ease), background var(--fast) var(--ease), border-color var(--fast) var(--ease);
}

.page-faq .fg-index__link .mono {
  font-size: .7rem;
  color: var(--rock);
}

.page-faq .fg-index__link:hover {
  color: var(--paper);
  background: var(--blue-soft);
}

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

.page-faq .fg-index__link[aria-current="true"],
.page-faq .fg-index__link[aria-current="page"] {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: var(--cyan-soft);
}

.page-faq .fg-index__link[aria-current="true"] .mono,
.page-faq .fg-index__link[aria-current="page"] .mono {
  color: var(--cyan);
}

.page-faq .fg-index__tip {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: .78rem;
  line-height: 1.6;
  color: var(--rock);
}

/* 章节 */
.page-faq .fg-block {
  margin-bottom: 3.2rem;
  scroll-margin-top: 24px;
}

.page-faq .fg-block__num {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .fg-block h2 {
  margin: .35rem 0 .85rem;
}

.page-faq .fg-block h3 {
  margin: 1.7rem 0 .85rem;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--paper);
}

.page-faq .fg-lead {
  max-width: 58ch;
  margin-bottom: 1.3rem;
  color: var(--text-dim);
  line-height: 1.75;
}

/* 步骤 */
.page-faq .fg-steps {
  list-style: none;
  counter-reset: fgstep;
  display: grid;
  gap: 9px;
  margin: 0 0 1.4rem;
  padding: 0;
}

.page-faq .fg-steps > li {
  counter-increment: fgstep;
  position: relative;
  padding: 12px 14px 12px 52px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  line-height: 1.68;
  transition: border-color var(--fast) var(--ease), transform var(--fast) var(--ease);
}

.page-faq .fg-steps > li:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.page-faq .fg-steps > li::before {
  content: counter(fgstep, decimal-leading-zero);
  position: absolute;
  left: 14px;
  top: 12px;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--blue);
}

/* 短词对照 */
.page-faq .fg-lex {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  margin-bottom: 1.5rem;
}

.page-faq .fg-lex__row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-sm);
  font-size: .9rem;
}

.page-faq .fg-lex__row:hover {
  border-color: var(--cyan);
}

.page-faq .fg-word {
  font-family: var(--font-mono);
  font-size: .84rem;
  letter-spacing: .08em;
  color: var(--cyan);
  background: var(--fg-word-bg);
  border-radius: 6px;
  padding: 3px 9px;
}

.page-faq .fg-lex__arrow {
  font-family: var(--font-mono);
  color: var(--rock);
}

.page-faq .fg-lex__to {
  margin-left: auto;
  color: var(--text-dim);
}

/* 折叠面板 */
.page-faq .panel {
  border-left: 2px solid var(--line);
  border-radius: var(--radius-sm);
  margin-bottom: 1.1rem;
  transition: border-color var(--fast) var(--ease);
}

.page-faq .panel[open] {
  border-left-color: var(--orange);
}

.page-faq .fg-pnum {
  margin-right: 10px;
  font-size: .74rem;
  color: var(--rock);
}

.page-faq .panel[open] .fg-pnum {
  color: var(--orange);
}

.page-faq .fg-plain {
  list-style: none;
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
}

.page-faq .fg-plain li {
  position: relative;
  padding-left: 16px;
  color: var(--text-dim);
  line-height: 1.7;
}

.page-faq .fg-plain li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
}

/* 问题清单 */
.page-faq .fg-qlist {
  list-style: none;
  display: grid;
  gap: 7px;
  margin: 0;
  padding: 0;
}

.page-faq .fg-qlist li {
  display: flex;
  gap: 10px;
  font-size: .9rem;
  line-height: 1.65;
  color: var(--text-dim);
}

.page-faq .fg-qlist .mono {
  flex: 0 0 auto;
  padding-top: 3px;
  font-size: .72rem;
  color: var(--rock);
}

/* 插图 */
.page-faq .fg-figure {
  margin: 0 0 3.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-800);
  scroll-margin-top: 24px;
}

.page-faq .fg-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1100 / 620;
  object-fit: cover;
}

.page-faq .fg-figure figcaption {
  padding: 11px 14px;
  border-top: 1px solid var(--line);
  font-size: .8rem;
  color: var(--text-dim);
}

/* 右侧旁注 */
.page-faq .fg-note-wrap {
  display: grid;
  gap: 12px;
}

.page-faq .fg-note {
  background: var(--cream);
  color: var(--ink-900);
  border: 1px solid rgba(11, 14, 20, .08);
  border-radius: var(--radius-sm);
  padding: 15px 16px;
}

.page-faq .fg-note__head {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--moss);
  margin: 0 0 10px;
}

.page-faq .fg-note ul {
  list-style: none;
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  font-size: .86rem;
  line-height: 1.6;
}

.page-faq .fg-note li {
  position: relative;
  padding-left: 14px;
}

.page-faq .fg-note li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--clay);
}

.page-faq .fg-note--dark {
  background: var(--ink-800);
  color: var(--text);
  border-color: var(--line);
}

.page-faq .fg-note--dark .fg-note__head {
  color: var(--cyan);
}

.page-faq .fg-note--dark li::before {
  background: var(--blue);
}

/* 收束提示 */
.page-faq .fg-closing {
  margin-bottom: 48px;
}

/* 响应式 */
@media (min-width: 640px) {
  .page-faq .fg-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-faq .fg-qlist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 7px 22px;
  }
}

@media (min-width: 1024px) {
  .page-faq .fgrid {
    grid-template-columns: var(--fg-index-w) minmax(0, 1fr) var(--fg-note-w);
    align-items: start;
  }

  .page-faq .fg-index__nav {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .fg-index {
    position: sticky;
    top: 24px;
  }

  .page-faq .fg-note-wrap {
    position: sticky;
    top: 24px;
  }

  .page-faq .fg-hero__media {
    margin-top: 2.6rem;
  }
}

@media (min-width: 1280px) {
  .page-faq .fg-hero__lede {
    font-size: 1.06rem;
  }
}