.page-faq {
  --faq-num-col: 42px;
  --faq-gap: 12px;
  --faq-accent: var(--og-cyan);
  padding-inline: var(--og-gutter);
  padding-block: clamp(20px, 4vw, 38px) clamp(60px, 10vw, 104px);
}

.page-faq > .og-shell {
  width: 100%;
  max-width: var(--og-shell);
  margin-inline: auto;
}

.page-faq .og-breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-bottom: clamp(6px, 2vw, 16px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 42px);
}

.page-faq .faq-hero__title {
  margin: 12px 0 16px;
  font-size: clamp(28px, 6vw, 46px);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--og-ink);
}

.page-faq .faq-hero__intro {
  max-width: 46ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--og-ink-soft);
}

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

.page-faq .faq-hero__frame {
  aspect-ratio: 3 / 2;
  border-radius: var(--og-radius-lg);
  border: 1px solid var(--og-rule);
  background: var(--og-panel);
  overflow: hidden;
}

.page-faq .og-media__img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 分组锚点导航 ---------- */
.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(24px, 4vw, 38px);
  padding-top: clamp(18px, 3vw, 26px);
  border-top: 1px solid var(--og-rule);
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 9px 14px;
  border: 1px solid var(--og-rule);
  border-radius: 999px;
  font-size: 13px;
  line-height: 1;
  color: var(--og-ink-soft);
  text-decoration: none;
  transition: border-color var(--og-fast) var(--og-ease),
    color var(--og-fast) var(--og-ease),
    background-color var(--og-fast) var(--og-ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--og-cyan);
  color: var(--og-cyan);
  background: rgba(37, 230, 208, 0.08);
}

.page-faq .faq-jump__idx {
  font-family: var(--og-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--og-cyan);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  border-top: 1px solid var(--og-rule);
  margin-top: clamp(32px, 5vw, 56px);
  padding-top: clamp(26px, 4vw, 44px);
  scroll-margin-top: 108px;
}

.page-faq section.faq-group:nth-of-type(1) { --faq-accent: var(--og-cyan); }
.page-faq section.faq-group:nth-of-type(2) { --faq-accent: var(--og-orange); }
.page-faq section.faq-group:nth-of-type(3) { --faq-accent: var(--og-cyan); }
.page-faq section.faq-group:nth-of-type(4) { --faq-accent: var(--og-violet); }
.page-faq section.faq-group:nth-of-type(5) { --faq-accent: var(--og-orange); }
.page-faq section.faq-group:nth-of-type(6) { --faq-accent: var(--og-violet); }

.page-faq .faq-group__bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px 10px 13px;
  border: 1px solid var(--og-rule);
  border-left: 3px solid var(--faq-accent);
  border-radius: 12px;
  background: var(--og-panel);
}

.page-faq .faq-group__idx {
  font-family: var(--og-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--faq-accent);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(17px, 2.6vw, 21px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--og-ink);
}

.page-faq .faq-group__note {
  margin: 14px 0 18px;
  max-width: 48ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--og-ink-dim);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: grid;
}

.page-faq .faq-entry {
  border-top: 1px solid var(--og-rule);
}

.page-faq .faq-entry__head {
  display: grid;
  grid-template-columns: var(--faq-num-col) minmax(0, 1fr) 24px;
  align-items: start;
  gap: 0 var(--faq-gap);
  padding: 17px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-entry__head:focus-visible {
  outline: 2px solid var(--og-cyan);
  outline-offset: 4px;
  border-radius: 6px;
}

.page-faq .faq-entry__num {
  font-family: var(--og-font-mono);
  font-size: 12px;
  line-height: 1.95;
  letter-spacing: 0.08em;
  color: var(--og-ink-dim);
  transition: color var(--og-fast) var(--og-ease);
}

.page-faq .faq-entry__q {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--og-ink);
  transition: color var(--og-fast) var(--og-ease);
}

.page-faq .faq-entry__mark {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  border: 1px solid var(--og-rule);
  border-radius: 50%;
  transition: border-color var(--og-fast) var(--og-ease);
}

.page-faq .faq-entry__mark::before,
.page-faq .faq-entry__mark::after {
  content: "";
  position: absolute;
  inset: 50% 5px auto 5px;
  height: 1px;
  background: var(--og-ink-dim);
  transition: transform var(--og-fast) var(--og-ease),
    background-color var(--og-fast) var(--og-ease);
}

.page-faq .faq-entry__mark::after {
  transform: rotate(90deg);
}

.page-faq .faq-entry[open] .faq-entry__num {
  color: var(--faq-accent);
}

.page-faq .faq-entry[open] .faq-entry__mark {
  border-color: var(--faq-accent);
}

.page-faq .faq-entry[open] .faq-entry__mark::before,
.page-faq .faq-entry[open] .faq-entry__mark::after {
  background: var(--faq-accent);
}

.page-faq .faq-entry[open] .faq-entry__mark::after {
  transform: rotate(0deg);
}

@media (hover: hover) {
  .page-faq .faq-entry__head:hover .faq-entry__q {
    color: var(--faq-accent);
  }
  .page-faq .faq-entry__head:hover .faq-entry__mark {
    border-color: var(--faq-accent);
  }
}

.page-faq .faq-entry__body {
  margin: 0 0 20px calc(var(--faq-num-col) + var(--faq-gap));
  padding: 16px 18px;
  border: 1px solid rgba(38, 49, 79, 0.9);
  border-radius: 14px;
  background: var(--og-glass);
}

.page-faq .faq-entry__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.92;
  color: var(--og-ink-soft);
}

.page-faq .faq-entry__body p + p {
  margin-top: 10px;
}

.page-faq .faq-entry__body a,
.page-faq .faq-callout a {
  color: var(--og-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(37, 230, 208, 0.4);
  transition: color var(--og-fast) var(--og-ease),
    border-color var(--og-fast) var(--og-ease);
}

.page-faq .faq-entry__body a:hover,
.page-faq .faq-callout a:hover {
  color: var(--og-cyan-lift);
  border-bottom-color: var(--og-cyan-lift);
}

.page-faq .faq-entry__body .og-copy {
  margin-top: 14px;
}

/* ---------- 电脑端提示板 ---------- */
.page-faq .faq-callout {
  display: grid;
  gap: 8px;
  margin: 8px 0 22px calc(var(--faq-num-col) + var(--faq-gap));
  padding: 20px 22px;
  border-radius: var(--og-radius);
  background: var(--og-paper);
  color: var(--og-deep);
}

.page-faq .faq-callout__label {
  margin: 0;
  font-family: var(--og-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(8, 12, 22, 0.55);
}

.page-faq .faq-callout__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--og-deep);
}

.page-faq .faq-callout__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.88;
  color: rgba(8, 12, 22, 0.78);
}

.page-faq .faq-callout a {
  color: #a04a10;
  border-bottom-color: rgba(160, 74, 16, 0.4);
}

.page-faq .faq-callout a:hover {
  color: #7d3708;
  border-bottom-color: #7d3708;
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-shot {
  margin: 0 0 22px;
}

.page-faq .faq-shot__frame {
  aspect-ratio: 14 / 9;
  border-radius: var(--og-radius);
  border: 1px solid var(--og-rule);
  background: var(--og-panel);
  overflow: hidden;
}

.page-faq .faq-shot .og-media__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--og-ink-dim);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq {
    --faq-num-col: 66px;
    --faq-gap: 20px;
  }

  .page-faq .faq-entry__q {
    font-size: 17px;
  }

  .page-faq .faq-entry__body p {
    font-size: 16px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-faq .faq-hero__media {
    align-self: stretch;
  }

  .page-faq .faq-hero__frame {
    height: 100%;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-entry__body,
  .page-faq .faq-callout {
    margin-left: 0;
  }

  .page-faq .faq-entry__head {
    grid-template-columns: 34px minmax(0, 1fr) 20px;
    gap: 0 10px;
  }

  .page-faq .faq-entry__mark {
    width: 18px;
    height: 18px;
  }

  .page-faq .faq-jump__link {
    padding: 8px 11px;
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-entry__mark::before,
  .page-faq .faq-entry__mark::after,
  .page-faq .faq-entry__q,
  .page-faq .faq-jump__link {
    transition: none;
  }
}