.page-faq {
  --faq-gap: clamp(28px, 5vw, 56px);
  --faq-line-offset: 11px;
}

/* ---------- 首屏 ---------- */
.page-faq .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .faq-lead__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: end;
}

.page-faq .faq-lead__intro {
  display: grid;
  gap: 16px;
  max-width: 44rem;
}

.page-faq .faq-lead h1 {
  margin: 0;
  font-size: var(--step-3);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--text-strong);
  text-wrap: balance;
}

.page-faq .faq-lead .lead {
  margin: 0;
  max-width: 40em;
}

.page-faq .faq-lead__media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-800);
  box-shadow: var(--shadow-1);
}

.page-faq .faq-lead__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 主题跳转胶囊 ---------- */
.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

.page-faq .faq-jump__pill {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(13, 32, 68, 0.45);
  color: var(--steel);
  font-size: var(--step--1);
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease),
    background-color 0.22s var(--ease);
}

.page-faq .faq-jump__pill::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 6px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.26s var(--ease);
}

.page-faq .faq-jump__pill:hover,
.page-faq .faq-jump__pill:focus-visible {
  color: var(--silver);
  border-color: var(--cyan);
  background: var(--cyan-soft);
  outline: none;
}

.page-faq .faq-jump__pill:hover::after,
.page-faq .faq-jump__pill:focus-visible::after {
  transform: scaleX(1);
}

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

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  padding-block: clamp(32px, 5vw, 54px);
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--header-h-scrolled) + 28px);
}

.page-faq .faq-group:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  margin-bottom: clamp(14px, 2vw, 24px);
}

.page-faq .faq-group__index {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--text-strong);
}

.page-faq .faq-group__lede {
  flex-basis: 100%;
  margin: 0;
  max-width: 42em;
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--steel-dim);
}

/* ---------- 手风琴 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .qa > summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  color: var(--silver);
  font-size: var(--step-0);
  font-weight: 600;
  line-height: 1.55;
  transition: color 0.2s var(--ease);
}

.page-faq .qa > summary::-webkit-details-marker {
  display: none;
}

.page-faq .qa > summary::marker {
  content: "";
}

.page-faq .qa > summary:hover {
  color: var(--cyan);
}

.page-faq .qa > summary:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 3px;
  border-radius: 2px;
}

.page-faq .qa__mark {
  flex: none;
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(6, 14, 31, 0.6);
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--cyan);
  transform: translate(-50%, -50%);
  transition: transform 0.22s var(--ease);
}

.page-faq .qa__mark::before {
  width: 9px;
  height: 1.5px;
}

.page-faq .qa__mark::after {
  width: 1.5px;
  height: 9px;
}

.page-faq .qa[open] > summary {
  color: var(--cyan);
}

.page-faq .qa[open] .qa__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .qa__body {
  position: relative;
  margin: 0;
  padding: 0 0 22px 38px;
  max-width: 38em;
  color: var(--text);
  font-size: var(--step-0);
  line-height: 1.75;
}

.page-faq .qa__body::before {
  content: "";
  position: absolute;
  left: var(--faq-line-offset);
  top: 4px;
  bottom: 24px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--violet));
}

.page-faq .qa__body p {
  margin: 0;
}

/* ---------- 继续求助 ---------- */
.page-faq .faq-more__panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(24px, 4vw, 46px);
  background:
    radial-gradient(900px 320px at 88% 0%, var(--cyan-soft), transparent 62%),
    radial-gradient(620px 300px at 6% 100%, var(--violet-soft), transparent 68%),
    linear-gradient(160deg, var(--ink-800) 0%, var(--ink-900) 100%);
  box-shadow: var(--shadow-1);
}

.page-faq .faq-more__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 40px);
}

.page-faq .faq-more__text h2 {
  margin: 12px 0 14px;
  font-size: var(--step-2);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--text-strong);
}

.page-faq .faq-more__text > p {
  margin: 0 0 18px;
  max-width: 38em;
}

.page-faq .faq-more__list {
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .faq-more__list li {
  position: relative;
  padding-left: 20px;
  color: var(--steel);
  font-size: var(--step--1);
  line-height: 1.7;
}

.page-faq .faq-more__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 1.5px;
  background: var(--cyan);
}

.page-faq .faq-more__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-more__aside {
  display: grid;
  gap: 12px;
  align-content: start;
  padding-left: 18px;
  border-left: 1px solid var(--line);
}

.page-faq .faq-more__aside .note {
  margin: 0;
  max-width: 26em;
}

.page-faq .faq-more__aside-link {
  margin: 0 0 6px;
}

.page-faq .faq-more__aside-link a {
  color: var(--cyan);
  font-size: var(--step--1);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-more__aside-link a:hover,
.page-faq .faq-more__aside-link a:focus-visible {
  color: var(--silver);
  border-color: var(--cyan);
  outline: none;
}

.page-faq .faq-more__aside-link a:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 3px;
}

/* ---------- 术语速查 ---------- */
.page-faq .faq-glossary__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(24px, 3vw, 40px);
}

.page-faq .faq-glossary__media {
  margin: 0;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-800);
}

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

.page-faq .faq-terms {
  margin: 0;
  display: grid;
}

.page-faq .faq-terms__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-terms__row:first-child {
  padding-top: 0;
}

.page-faq .faq-terms__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-terms__term {
  font-size: var(--step-0);
  color: var(--text-strong);
}

.page-faq .faq-terms__desc {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-term {
  position: relative;
  display: inline-block;
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
  border-bottom: 1px dashed var(--line);
  cursor: help;
  transition: border-color 0.2s var(--ease);
}

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

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

.page-faq .faq-term__tip {
  position: absolute;
  left: 0;
  top: calc(100% + 8px);
  z-index: 5;
  width: max-content;
  max-width: min(260px, 72vw);
  padding: 8px 12px;
  border-radius: var(--radius);
  background: var(--cyan);
  color: var(--ink-950);
  font-family: var(--font-sans);
  font-size: var(--step--1);
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.18s var(--ease), transform 0.18s var(--ease),
    visibility 0.18s var(--ease);
}

.page-faq .faq-term:hover .faq-term__tip,
.page-faq .faq-term:focus-visible .faq-term__tip {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-lead__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-faq .faq-more__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-faq .faq-glossary__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-faq .faq-terms__row {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 640px) and (max-width: 899px) {
  .page-faq .faq-lead__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-lead__media {
    max-width: 520px;
  }
}

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 639px) {
  .page-faq {
    --faq-line-offset: 8px;
  }

  .page-faq .qa > summary {
    gap: 12px;
    padding: 16px 0;
  }

  .page-faq .qa__body {
    padding-left: 34px;
  }

  .page-faq .faq-more__aside {
    padding-left: 14px;
  }

  .page-faq .faq-jump__pill {
    padding: 8px 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .qa > summary,
  .page-faq .faq-jump__pill,
  .page-faq .faq-jump__pill::after,
  .page-faq .faq-term,
  .page-faq .faq-term__tip {
    transition: none;
  }

  .page-faq .faq-jump__pill:hover::after,
  .page-faq .faq-jump__pill:focus-visible::after {
    transform: scaleX(1);
  }

  .page-faq .faq-term__tip {
    transform: none;
  }
}