.page-faq {
  --faq-rose: #FF8FB1;
  --faq-accent: var(--cyan);
  background-color: var(--void);
  padding-bottom: 40px;
}

.page-faq .acc-cyan { --faq-accent: var(--cyan); }
.page-faq .acc-amber { --faq-accent: var(--amber); }
.page-faq .acc-grape { --faq-accent: var(--grape); }
.page-faq .acc-lime { --faq-accent: var(--lime); }
.page-faq .acc-rose { --faq-accent: var(--faq-rose); }

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: 26px 10px;
  background:
    radial-gradient(120% 90% at 88% -20%, rgba(49, 242, 222, 0.13), transparent 62%),
    radial-gradient(90% 70% at 4% -10%, rgba(165, 107, 255, 0.12), transparent 58%);
}

.page-faq .faq-hero .crumb {
  margin-bottom: 20px;
}

.page-faq .faq-hero__lead {
  max-width: 62ch;
  margin: 18px 0 0;
  color: var(--ink-dim);
  font-size: 1.0625rem;
  line-height: 1.85;
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 30px 0 0;
}

.page-faq .faq-stat {
  padding: 14px 16px;
  border: var(--line);
  border-radius: var(--radius-md);
  background: rgba(14, 21, 36, 0.72);
}

.page-faq .faq-stat dt {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
}

.page-faq .faq-stat dd {
  margin: 6px 0 0;
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-stat dd .mono {
  color: var(--cyan);
  margin-right: 2px;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 26px;
  padding-block: 34px 56px;
}

/* 问题索引 */
.page-faq .faq-index {
  padding: 20px;
  border: var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--ink-dim);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq .faq-index__list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 10px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  color: var(--ink-dim);
  font-size: 0.9375rem;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--ink);
  border-color: var(--faq-accent);
  background: rgba(255, 255, 255, 0.04);
  transform: translateX(3px);
}

.page-faq .faq-index__num {
  font-size: 0.8rem;
  color: var(--faq-accent);
}

.page-faq .faq-index__label {
  min-width: 0;
  overflow-wrap: anywhere;
}

.page-faq .faq-index__count {
  font-size: 0.78rem;
  color: var(--ink-dim);
}

.page-faq .faq-index__hint {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--hair);
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-faq .faq-index__hint a {
  color: var(--cyan);
  text-underline-offset: 3px;
}

/* ---------- 问答区 ---------- */
.page-faq .faq-content {
  display: grid;
  gap: 24px;
  min-width: 0;
}

.page-faq .faq-group {
  position: relative;
  overflow: hidden;
  min-width: 0;
  padding: 24px 18px 26px;
  border: var(--line);
  border-left: 3px solid var(--faq-accent);
  border-radius: var(--radius-lg);
  background: var(--panel);
  scroll-margin-top: 100px;
  transition: box-shadow 0.2s ease;
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  top: -70px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: var(--faq-accent);
  opacity: 0.09;
  filter: blur(46px);
  pointer-events: none;
}

.page-faq .faq-group:target {
  box-shadow: 0 0 0 1px var(--faq-accent), 0 18px 44px -30px var(--faq-accent);
}

.page-faq .faq-group__head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-faq .faq-group__num {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--faq-accent);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(1.35rem, 3.4vw, 1.95rem);
}

.page-faq .faq-group__tag {
  margin-left: auto;
  padding: 4px 12px;
  border: 1px solid var(--faq-accent);
  border-radius: var(--radius-pill);
  color: var(--faq-accent);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.page-faq .faq-group__intro {
  position: relative;
  max-width: 58ch;
  margin: 12px 0 20px;
  color: var(--ink-dim);
  line-height: 1.8;
}

.page-faq .faq-figure {
  position: relative;
  margin: 0 0 20px;
}

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

/* 手风琴 */
.page-faq .qa {
  position: relative;
  border: var(--line);
  border-radius: var(--radius-md);
  background: rgba(7, 10, 18, 0.6);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

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

.page-faq .qa[open] {
  border-color: var(--faq-accent);
  background: rgba(7, 10, 18, 0.85);
  box-shadow: 0 16px 38px -30px var(--faq-accent);
}

.page-faq .qa > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.55;
  transition: color 0.2s ease;
}

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

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

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

.page-faq .qa > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--faq-accent);
}

.page-faq .qa[open] > summary::after {
  content: "–";
}

.page-faq .qa__no {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--faq-accent);
}

.page-faq .qa__q {
  min-width: 0;
  overflow-wrap: anywhere;
}

.page-faq .qa__body {
  margin: 0 16px;
  padding: 12px 0 16px;
  border-top: 1px dashed var(--hair);
  color: var(--ink-dim);
  font-size: 1rem;
  line-height: 1.85;
  overflow-wrap: anywhere;
}

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

.page-faq .qa__body a {
  color: var(--faq-accent);
  text-underline-offset: 3px;
}

/* ---------- 收尾 ---------- */
.page-faq .faq-still {
  padding: 26px 20px 28px;
  border: var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(152deg, rgba(27, 18, 64, 0.92), rgba(58, 16, 38, 0.7));
}

.page-faq .faq-still h2 {
  margin: 8px 0 10px;
  font-size: clamp(1.3rem, 3.2vw, 1.85rem);
}

.page-faq .faq-still p {
  max-width: 56ch;
  margin: 0;
  color: var(--ink-dim);
  line-height: 1.8;
}

.page-faq .faq-still__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding-block: 34px 14px;
  }

  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
    padding-block: 44px 72px;
  }

  .page-faq .faq-group {
    padding: 30px 30px 32px;
  }

  .page-faq .qa > summary {
    padding: 17px 22px;
    font-size: 1.0625rem;
  }

  .page-faq .qa__body {
    margin: 0 22px;
    padding: 14px 0 18px;
  }

  .page-faq .faq-still {
    padding: 32px 30px 34px;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(240px, 284px) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 92px;
  }
}