.page-faq {
  --faq-pad: clamp(1.5rem, 4.5vw, 3.25rem);
  background: var(--ink);
  color: var(--text);
}

/* ---------- 顶部氛围条 ---------- */
.page-faq .faq-veil {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--ink);
}

.page-faq .faq-veil::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(110% 85% at 14% 8%, rgba(78, 140, 134, .30), transparent 62%),
    linear-gradient(180deg, rgba(11, 11, 13, .58) 0%, rgba(11, 11, 13, .84) 58%, var(--ink) 100%);
}

.page-faq .faq-veil-img {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .55;
}

.page-faq .faq-veil-inner {
  position: relative;
  z-index: 2;
  padding-top: clamp(2rem, 6vw, 4rem);
  padding-bottom: clamp(2.25rem, 6vw, 4.25rem);
}

.page-faq .faq-veil h1 {
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(2rem, 7vw, 3.75rem);
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--text);
  margin: .5rem 0 1rem;
  max-width: 16ch;
  text-shadow: 0 2px 24px rgba(11, 11, 13, .7);
}

.page-faq .faq-veil .lede {
  max-width: 58ch;
  color: var(--text-soft);
  font-size: var(--fs-16);
  line-height: 1.8;
  margin: 0;
}

.page-faq .faq-veil .latin-label {
  color: var(--gold);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.5rem);
  padding-top: var(--faq-pad);
  padding-bottom: clamp(3rem, 8vw, 5.5rem);
}

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

/* ---------- 章节 ---------- */
.page-faq .faq-chapter {
  padding-top: clamp(2rem, 5vw, 3.25rem);
  margin-top: clamp(2rem, 5vw, 3.25rem);
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-chapter-head {
  position: relative;
  padding-left: 3.25rem;
}

.page-faq .faq-num {
  position: absolute;
  left: 0;
  top: -.35rem;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: clamp(2rem, 5.5vw, 3rem);
  line-height: 1;
  letter-spacing: .02em;
  color: rgba(200, 162, 74, .55);
}

.page-faq .faq-title {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  line-height: 1.25;
  letter-spacing: -.005em;
  color: var(--text);
  margin: 0 0 .5rem;
}

.page-faq .faq-lede {
  color: var(--text-soft);
  font-size: var(--fs-16);
  line-height: 1.75;
  margin: 0;
  max-width: 58ch;
}

/* ---------- 问答条目 ---------- */
.page-faq .qa-list {
  display: flex;
  flex-direction: column;
  gap: .7rem;
  margin-top: 1.5rem;
}

.page-faq .qa-item {
  border: 1px solid var(--line);
  border-left: 3px solid var(--cinnabar);
  border-radius: 2px;
  background: var(--ink-2);
  transition: background-color var(--t-mid) var(--ease), border-color var(--t-mid) var(--ease);
}

.page-faq .qa-item[open] {
  background: var(--ink-3);
  border-color: var(--line-strong);
  border-left-color: var(--cinnabar);
}

.page-faq .qa-q {
  display: flex;
  align-items: flex-start;
  gap: .7rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--f-body);
  font-size: var(--fs-16);
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
}

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

.page-faq .qa-q::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--f-mono);
  font-size: var(--fs-20);
  line-height: 1;
  color: var(--gold);
  transition: transform var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-faq .qa-item[open] .qa-q::after {
  content: "−";
  color: var(--gold-bright);
}

.page-faq .qa-q:hover::after,
.page-faq .qa-q:focus-visible::after {
  color: var(--gold-bright);
}

.page-faq .qa-mark {
  flex: 0 0 auto;
  display: inline-grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 2px;
  background: rgba(194, 64, 46, .18);
  color: #E0705C;
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  font-weight: 700;
}

.page-faq .qa-a {
  padding: 0 1.1rem 1.15rem 3.3rem;
  color: var(--text-soft);
  font-size: var(--fs-16);
  line-height: 1.8;
}

.page-faq .qa-a p {
  margin: 0;
  max-width: 66ch;
}

.page-faq .qa-a a {
  color: var(--gold-bright);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 第 01 章的图文分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.page-faq .faq-figure {
  margin: 0;
  padding: .6rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--ink-2);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 1px;
}

.page-faq .faq-figure figcaption {
  margin-top: .6rem;
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  letter-spacing: .18em;
  text-transform: lowercase;
  color: var(--jade);
  text-align: center;
}

/* ---------- 右侧跳转栏 ---------- */
.page-faq .faq-jump {
  display: flex;
  flex-direction: column;
  gap: .85rem;
  min-width: 0;
}

.page-faq .faq-jump-title {
  margin: 0;
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  letter-spacing: .2em;
  text-transform: lowercase;
  color: var(--mist);
}

.page-faq .faq-jump-pills {
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  padding-bottom: .35rem;
  scrollbar-width: none;
}

.page-faq .faq-jump-pills::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-pill {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  flex: 0 0 auto;
  padding: .55rem .9rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(20, 20, 26, .7);
  color: var(--text-soft);
  font-size: var(--fs-14);
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}

.page-faq .faq-pill:hover,
.page-faq .faq-pill:focus-visible {
  border-color: var(--gold);
  color: var(--gold-bright);
  background: rgba(200, 162, 74, .10);
}

.page-faq .faq-pill-num {
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--gold);
}

.page-faq .faq-jump-split {
  height: 1px;
  background: var(--line);
}

.page-faq .faq-jump-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.page-faq .faq-jump-links a {
  display: inline-block;
  color: var(--jade);
  font-size: var(--fs-14);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-faq .faq-jump-links a:hover,
.page-faq .faq-jump-links a:focus-visible {
  color: var(--gold-bright);
  border-bottom-color: var(--gold);
}

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .page-faq .faq-chapter-head {
    padding-left: 0;
  }

  .page-faq .faq-num {
    position: static;
    display: block;
    margin-bottom: .25rem;
  }

  .page-faq .qa-a {
    padding-left: 1.1rem;
  }
}

@media (min-width: 768px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) minmax(170px, 220px);
    gap: 2rem;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 236px;
    gap: clamp(2.5rem, 5vw, 4rem);
  }

  .page-faq .faq-jump {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }

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

  .page-faq .faq-pill {
    white-space: normal;
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-q::after,
  .page-faq .qa-item,
  .page-faq .faq-pill,
  .page-faq .faq-jump-links a {
    transition: none;
  }
}