.page-faq {
  --fg-bg-light: #11294a;
  --fg-bg-glow: rgba(212, 175, 55, 0.08);
  --fg-line: rgba(212, 175, 55, 0.18);
  --fg-mute: var(--color-muted);
  --fg-gold: var(--color-gold);
  --fg-red: var(--color-red);
  --fg-teal: var(--color-teal);
  color: var(--color-ivory);
  background:
    radial-gradient(ellipse at 12% 0%, var(--fg-bg-glow), transparent 38%),
    radial-gradient(ellipse at 88% 18%, rgba(230, 57, 70, 0.07), transparent 34%),
    var(--color-ink);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: clip;
  min-height: 70vh;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  max-width: var(--container-main);
  margin: 0 auto;
  padding: 28px 20px 0;
  font-size: 13px;
}
.page-faq .breadcrumb__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.page-faq .breadcrumb__item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.page-faq .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--color-muted);
  font-family: var(--font-mono);
}
.page-faq .breadcrumb__link {
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}
.page-faq .breadcrumb__link:hover {
  color: var(--color-teal);
}
.page-faq .breadcrumb__current {
  color: var(--color-silver);
}

/* ---------- 首屏标题区 ---------- */
.page-faq .fg-hero {
  position: relative;
  max-width: var(--container-main);
  margin: 0 auto;
  padding: 44px 20px 36px;
}
.page-faq .fg-hero__inner {
  position: relative;
  z-index: 1;
}
.page-faq .fg-hero__sub {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 6px 14px;
  border: 1px solid rgba(212, 175, 55, 0.35);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--fg-gold);
}
.page-faq .fg-hero__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(32px, 6vw, 56px);
  line-height: 1.12;
  letter-spacing: 0.02em;
  color: var(--color-ivory);
  text-wrap: balance;
}
.page-faq .fg-hero__lede {
  max-width: 780px;
  margin: 0;
  font-size: 16px;
  color: var(--color-muted);
}
.page-faq .fg-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.page-faq .fg-hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(245, 247, 250, 0.14);
  font-size: 13px;
  color: var(--color-ivory);
  background: rgba(245, 247, 250, 0.03);
}
.page-faq .fg-hero__tag i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--fg-teal);
  box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.22);
  flex: none;
}

/* ---------- 通用章节标题 ---------- */
.page-faq .fg-quickstart,
.page-faq .fg-faq,
.page-faq .fg-advanced,
.page-faq .fg-updates {
  max-width: var(--container-main);
  margin: 0 auto;
  padding: 52px 20px 24px;
}
.page-faq .fg-section-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 30px;
}
.page-faq .fg-section-head__num {
  font-family: var(--font-display);
  font-size: 42px;
  line-height: 1;
  color: var(--fg-red);
}
.page-faq .fg-section-head__text {
  margin: 0;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.page-faq .fg-section-head::after {
  content: "";
  flex: 1;
  height: 2px;
  margin-left: 6px;
  background: linear-gradient(90deg, var(--fg-gold), transparent);
}

/* ---------- 快速入门 ---------- */
.page-faq .fg-quickstart__grid {
  display: grid;
  gap: 32px;
}
.page-faq .fg-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  position: relative;
}
.page-faq .fg-steps::before {
  content: "";
  position: absolute;
  top: 20px;
  bottom: 20px;
  left: 22px;
  width: 2px;
  background: linear-gradient(180deg, var(--fg-gold), var(--fg-teal), transparent);
}
.page-faq .fg-step {
  position: relative;
  margin: 0;
  padding: 0 0 30px 64px;
  scroll-margin-top: 140px;
}
.page-faq .fg-step:last-child {
  padding-bottom: 0;
}
.page-faq .fg-step__num {
  position: absolute;
  left: 0;
  top: 2px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 2px solid var(--fg-gold);
  background: var(--color-ink);
  color: var(--fg-gold);
  font-family: var(--font-mono);
  font-size: 14px;
  display: grid;
  place-items: center;
  z-index: 1;
}
.page-faq .fg-step:target .fg-step__num {
  background: var(--fg-gold);
  color: var(--color-ink);
  box-shadow: 0 0 0 6px rgba(212, 175, 55, 0.22);
}
.page-faq .fg-step__content h3 {
  margin: 0 0 6px;
  font-size: 18px;
  line-height: 1.35;
  color: var(--color-ivory);
}
.page-faq .fg-step__content p {
  margin: 0;
  font-size: 14px;
  color: var(--color-muted);
}
.page-faq .fg-quickstart__media {
  margin: 0;
  position: relative;
  border: 1px solid var(--fg-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(20, 42, 78, 0.7), rgba(11, 29, 58, 0.95));
  padding: 8px;
}
.page-faq .fg-quickstart__media::before {
  content: "OB VIEW";
  position: absolute;
  top: 18px;
  left: 18px;
  z-index: 2;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--fg-red);
  color: var(--color-ivory);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
}
.page-faq .fg-quickstart__media img {
  width: 100%;
  height: auto;
  border-radius: calc(var(--radius-lg) - 8px);
  object-fit: cover;
}
.page-faq .fg-quickstart__media .media-frame__caption {
  padding: 12px 8px 6px;
  color: var(--color-muted);
  font-size: 12px;
  text-align: center;
}

/* ---------- 功能问答 ---------- */
.page-faq .fg-faq {
  margin-top: 10px;
  border: 1px solid rgba(245, 247, 250, 0.08);
  border-radius: 32px;
  background: linear-gradient(160deg, rgba(20, 42, 78, 0.55), rgba(11, 29, 58, 0.25));
  padding: 36px 20px 40px;
}
.page-faq .fg-faq__layout {
  display: grid;
  gap: 30px;
}
.page-faq .fg-toc {
  align-self: start;
  border-radius: var(--radius-md);
  background: rgba(245, 247, 250, 0.04);
  border: 1px solid rgba(245, 247, 250, 0.07);
  padding: 20px;
}
.page-faq .fg-toc__title {
  margin: 0 0 12px;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-gold);
}
.page-faq .fg-toc ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 4px;
}
.page-faq .fg-toc a {
  display: block;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  color: var(--color-silver);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}
.page-faq .fg-toc a:hover {
  background: var(--fg-red);
  color: var(--color-ivory);
}
.page-faq .fg-accordion {
  display: grid;
  gap: 12px;
}
.page-faq .fg-group__title {
  margin: 10px 0 0;
  padding-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--fg-teal);
}
.page-faq .fg-item {
  border: 1px solid rgba(245, 247, 250, 0.1);
  border-radius: 18px;
  background: rgba(245, 247, 250, 0.03);
  transition: border-color 0.2s ease;
}
.page-faq .fg-item[open] {
  border-color: rgba(212, 175, 55, 0.3);
}
.page-faq .fg-item__q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border-radius: inherit;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  color: var(--color-ivory);
}
.page-faq .fg-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .fg-item__q::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--fg-gold);
  transition: transform 0.2s ease;
}
.page-faq .fg-item[open] .fg-item__q::after {
  content: "−";
  color: var(--fg-red);
}
.page-faq .fg-item__icon {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--fg-red);
  box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.14);
  flex: none;
}
.page-faq .fg-item__a {
  padding: 0 18px 16px 56px;
  font-size: 14px;
  color: var(--color-muted);
}
.page-faq .fg-item__a p {
  margin: 0 0 8px;
}
.page-faq .fg-item__a p:last-child {
  margin-bottom: 0;
}
.page-faq .fg-item__a code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-gold);
  background: rgba(212, 175, 55, 0.08);
  border-radius: 6px;
  padding: 2px 6px;
}
.page-faq .fg-item__link {
  display: inline-block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--fg-teal);
  text-decoration: none;
  border-bottom: 1px solid var(--fg-teal);
}
.page-faq .fg-item__link:hover {
  color: var(--fg-gold);
  border-color: var(--fg-gold);
}

/* ---------- 高级检索技巧 ---------- */
.page-faq .fg-advanced {
  margin-top: 20px;
  border-radius: 32px;
  background: linear-gradient(150deg, var(--fg-bg-light), rgba(11, 29, 58, 0.96));
  border: 1px solid rgba(245, 247, 250, 0.07);
  padding: 40px 20px;
}
.page-faq .fg-advanced__layout {
  display: grid;
  gap: 32px;
}
.page-faq .fg-advanced__content {
  display: grid;
  gap: 14px;
}
.page-faq .fg-adv-card {
  border-left: 3px solid var(--fg-red);
  border-radius: 14px;
  background: rgba(245, 247, 250, 0.05);
  padding: 18px 20px;
}
.page-faq .fg-adv-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--color-ivory);
}
.page-faq .fg-adv-card p {
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--color-muted);
}
.page-faq .fg-adv-card p:last-child {
  margin-bottom: 0;
}
.page-faq .fg-adv-note {
  font-size: 13px;
  color: var(--fg-teal);
}
.page-faq .fg-adv-card kbd {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--color-ink);
  border: 1px solid var(--color-silver);
  border-radius: 5px;
  padding: 2px 7px;
  color: var(--color-ivory);
}
.page-faq .fg-adv-card code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: rgba(212, 175, 55, 0.1);
  color: var(--fg-gold);
  border-radius: 6px;
  padding: 2px 6px;
}
.page-faq .fg-adv-media {
  margin: 0;
  border: 1px solid var(--fg-line);
  border-radius: var(--radius-lg);
  background: rgba(11, 29, 58, 0.4);
  padding: 8px;
}
.page-faq .fg-adv-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: calc(var(--radius-lg) - 8px);
}
.page-faq .fg-adv-media .media-frame__caption {
  padding: 12px 8px 6px;
  color: var(--color-muted);
  font-size: 12px;
  text-align: center;
}

/* ---------- 数据更新 ---------- */
.page-faq .fg-updates__grid {
  display: grid;
  gap: 30px;
}
.page-faq .fg-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.page-faq .fg-stat {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(245, 247, 250, 0.1);
  border-radius: 20px;
  background: rgba(245, 247, 250, 0.04);
  padding: 22px 18px;
}
.page-faq .fg-stat::after {
  content: "";
  position: absolute;
  right: -22px;
  bottom: -22px;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(230, 57, 70, 0.12);
}
.page-faq .fg-stat .stat-block__accent {
  display: block;
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--fg-red);
  margin-bottom: 4px;
}
.page-faq .fg-stat .stat-block__value {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.08;
  color: var(--fg-gold);
  margin-bottom: 6px;
}
.page-faq .fg-stat .stat-block__label {
  display: block;
  font-size: 13px;
  color: var(--color-muted);
}
.page-faq .fg-updates__text h3 {
  margin: 0 0 12px;
  font-size: 20px;
}
.page-faq .fg-updates__text p {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--color-muted);
}
.page-faq .fg-updates__text .btn {
  margin-top: 10px;
}

/* ---------- 帮助 CTA ---------- */
.page-faq .fg-help {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 20px 72px;
  text-align: center;
  border-top: 1px solid rgba(245, 247, 250, 0.08);
}
.page-faq .fg-help h2 {
  margin: 0 0 10px;
  font-size: 28px;
}
.page-faq .fg-help p {
  margin: 0 0 24px;
  font-size: 15px;
  color: var(--color-muted);
}

/* ---------- 桌面端增强 ---------- */
@media (min-width: 640px) {
  .page-faq .fg-hero {
    padding-inline: 28px;
  }
  .page-faq .fg-quickstart,
  .page-faq .fg-faq,
  .page-faq .fg-advanced,
  .page-faq .fg-updates {
    padding-inline: 28px;
  }
  .page-faq .fg-faq {
    padding-left: 28px;
    padding-right: 28px;
  }
  .page-faq .fg-advanced {
    padding-left: 28px;
    padding-right: 28px;
  }
}

@media (min-width: 900px) {
  .page-faq .fg-quickstart__grid {
    grid-template-columns: 1.55fr 1fr;
    gap: 48px;
    align-items: start;
  }
  .page-faq .fg-quickstart__media {
    margin-top: 8px;
  }
  .page-faq .fg-faq__layout {
    grid-template-columns: 230px 1fr;
    gap: 40px;
    align-items: start;
  }
  .page-faq .fg-toc {
    position: sticky;
    top: 148px;
  }
  .page-faq .fg-advanced__layout {
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: center;
  }
  .page-faq .fg-updates__grid {
    grid-template-columns: 1fr 1.2fr;
    gap: 56px;
    align-items: center;
  }
  .page-faq .fg-stats {
    gap: 18px;
  }
  .page-faq .fg-stat {
    padding: 26px 22px;
  }
}

@media (min-width: 1080px) {
  .page-faq .fg-hero {
    padding-top: 60px;
  }
  .page-faq .fg-hero__title {
    font-size: 56px;
  }
  .page-faq .fg-hero__lede {
    font-size: 17px;
  }
  .page-faq .fg-section-head__text {
    font-size: 28px;
  }
  .page-faq .fg-section-head__num {
    font-size: 50px;
  }
}