.page-faq {
  --local-ink: var(--white);
  --local-muted: var(--mist);
  --local-line: var(--line-strong);
  --local-accent: var(--cyan);
  --faq-gap: clamp(1.5rem, 4vw, 3rem);
  background: var(--ink);
  color: var(--white);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(2rem, 5vw, 4rem)) 0 clamp(2.5rem, 6vw, 4.5rem);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(115deg, rgba(174, 187, 208, .07) 0 1px, transparent 1px 64px);
  pointer-events: none;
}

.page-faq .faq-hero-ghost {
  position: absolute;
  right: -.05em;
  top: calc(var(--header-h) + .5rem);
  z-index: 0;
  font-family: var(--font-mono);
  font-size: clamp(6rem, 22vw, 15rem);
  font-weight: 700;
  line-height: .82;
  letter-spacing: -.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(174, 187, 208, .16);
  pointer-events: none;
  user-select: none;
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-hero-copy { min-width: 0; }

.page-faq .breadcrumb { margin: 0 0 1.25rem; }

.page-faq .faq-hero h1 {
  margin: 0;
  font-size: clamp(2.3rem, 7.6vw, 5rem);
  font-weight: 200;
  line-height: 1.04;
  letter-spacing: -.03em;
  color: var(--white);
}

.page-faq .faq-hero .lede {
  max-width: 48ch;
  margin: 1.25rem 0 0;
  color: var(--mist);
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  line-height: 1.85;
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

/* ---------- 编号索引卡 ---------- */
.page-faq .faq-index {
  align-self: start;
  padding: clamp(1.15rem, 3vw, 1.75rem);
  background: var(--paper);
  color: var(--text-ink);
  border: 2px solid var(--text-ink);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-index-label {
  margin: 0 0 .9rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: rgba(20, 24, 31, .6);
}

.page-faq .faq-index-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .15rem;
}

.page-faq .faq-index-list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .75rem;
  align-items: baseline;
  padding: .62rem .4rem;
  color: var(--text-ink);
  text-decoration: none;
  border-bottom: 1px dashed rgba(20, 24, 31, .28);
  transition: background .2s ease, transform .2s ease;
}

.page-faq .faq-index-list li:last-child a { border-bottom: 0; }

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  background: rgba(45, 240, 206, .35);
  transform: translateX(3px);
}

.page-faq .faq-index-num {
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: rgba(20, 24, 31, .62);
}

.page-faq .faq-index-text {
  font-size: .95rem;
  line-height: 1.55;
}

/* ---------- 首屏图 ---------- */
.page-faq .faq-hero-media {
  margin: clamp(2rem, 5vw, 3.25rem) 0 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--panel);
}

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

/* ---------- 问答长卷章节 ---------- */
.page-faq .faq-block {
  padding: clamp(2.5rem, 6vw, 5rem) 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-block-inner {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-faq .faq-block-head { min-width: 0; }

.page-faq .faq-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--local-accent);
}

.page-faq .faq-block-title {
  margin: .65rem 0 0;
  font-size: clamp(1.5rem, 3.4vw, 2.25rem);
  font-weight: 300;
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--local-ink);
}

.page-faq .faq-block-note {
  max-width: 34ch;
  margin: .8rem 0 0;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--local-muted);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-accordion {
  min-width: 0;
  display: grid;
  gap: .75rem;
  align-content: start;
}

.page-faq .faq-accordion .accordion-item {
  background: var(--panel);
  border: 1px solid var(--local-line);
  border-radius: var(--r-sm);
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .25s ease, transform .2s ease;
}

.page-faq .faq-accordion .accordion-item:hover {
  border-color: var(--local-accent);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.page-faq .faq-accordion .accordion-item:has(.accordion-trigger[aria-expanded="true"]) {
  border-color: var(--local-accent);
}

.page-faq .faq-accordion .accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1.05rem 1.15rem;
  background: transparent;
  border: 0;
  cursor: pointer;
  font: inherit;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
  text-align: left;
  color: var(--local-ink);
  transition: color .2s ease;
}

.page-faq .faq-accordion .accordion-trigger[aria-expanded="true"] {
  color: var(--local-accent);
}

.page-faq .faq-accordion .accordion-trigger:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -3px;
}

.page-faq .accordion-icon {
  position: relative;
  flex: none;
  width: 20px;
  height: 20px;
  color: var(--local-accent);
}

.page-faq .accordion-icon::before,
.page-faq .accordion-icon::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 2px;
  background: currentColor;
  transform: translateY(-50%);
}

.page-faq .accordion-icon::after {
  transition: transform .25s ease, opacity .25s ease;
}

.page-faq .accordion-trigger[aria-expanded="true"] .accordion-icon::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: 0;
}

.page-faq .faq-accordion .accordion-panel {
  padding: 0 1.15rem 1.2rem;
}

.page-faq .faq-accordion .accordion-panel .prose {
  margin: 0;
  font-size: .97rem;
  line-height: 1.85;
  color: var(--local-muted);
}

.page-faq .faq-accordion .accordion-panel p { margin: 0; }

.page-faq .faq-accordion .accordion-panel a {
  color: var(--local-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-accordion .accordion-panel a:hover {
  color: var(--orange);
}

/* ---------- 暖纸章节 ---------- */
.page-faq .faq-block--paper {
  --local-ink: var(--text-ink);
  --local-muted: rgba(20, 24, 31, .74);
  --local-line: rgba(20, 24, 31, .24);
  --local-accent: #0E7A6A;
  background: var(--paper);
  color: var(--text-ink);
  border-top: 3px solid var(--text-ink);
  border-bottom: 3px solid var(--text-ink);
}

.page-faq .faq-block--paper .faq-accordion .accordion-item {
  background: rgba(255, 255, 255, .58);
}

.page-faq .faq-block--paper .faq-accordion .accordion-item:hover {
  box-shadow: 6px 6px 0 rgba(20, 24, 31, .2);
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-block-figure {
  grid-column: 1 / -1;
  margin: 0;
  border: 1px solid var(--local-line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--panel);
}

/* ---------- 收束 ---------- */
.page-faq .faq-outro {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(3rem, 7vw, 5.5rem);
  border-top: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(143, 61, 255, .22), transparent 62%),
    var(--ink);
}

.page-faq .faq-outro-inner {
  display: grid;
  gap: 1rem;
}

.page-faq .faq-outro-title {
  margin: 0;
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 300;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .faq-outro-text {
  max-width: 52ch;
  margin: 0;
  color: var(--mist);
  font-size: .97rem;
  line-height: 1.85;
}

.page-faq .faq-outro-links {
  display: grid;
  gap: .75rem;
  margin-top: .5rem;
}

.page-faq .faq-outro-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  color: var(--white);
  text-decoration: none;
  transition: border-color .2s ease, transform .2s ease, box-shadow .25s ease;
}

.page-faq .faq-outro-link:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-outro-num {
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .faq-outro-label {
  flex: 1;
  font-size: .98rem;
  letter-spacing: .01em;
}

/* ---------- 栅格与响应式 ---------- */
@media (min-width: 62rem) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.45fr) minmax(280px, .72fr);
    align-items: start;
    column-gap: clamp(2rem, 5vw, 4rem);
  }

  .page-faq .faq-block-inner {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    column-gap: clamp(2rem, 5vw, 4.5rem);
    align-items: start;
  }

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

  .page-faq .faq-outro-links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 47.99rem) {
  .page-faq .faq-hero-ghost {
    top: calc(var(--header-h) + .25rem);
    opacity: .7;
  }

  .page-faq .faq-hero h1 {
    font-size: clamp(2rem, 10vw, 2.8rem);
  }

  .page-faq .faq-index {
    box-shadow: 5px 5px 0 rgba(6, 10, 18, .9);
  }

  .page-faq .faq-accordion .accordion-trigger {
    padding: .95rem 1rem;
  }

  .page-faq .faq-accordion .accordion-panel {
    padding: 0 1rem 1.1rem;
  }
}