.page-faq {
  --faq-index: 15rem;
  background: var(--ink);
  color: var(--paper);
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--pine);
  border-bottom: var(--edge);
  padding: clamp(1.4rem, 4vw, 2.4rem) 0 clamp(1.8rem, 4vw, 3rem);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -25%;
  right: -12%;
  width: min(56vw, 620px);
  height: 170%;
  background: linear-gradient(168deg, rgba(69, 240, 178, 0.16), rgba(69, 240, 178, 0) 60%);
  transform: rotate(15deg);
  pointer-events: none;
}

.page-faq .faq-hero > .container {
  position: relative;
  z-index: 1;
}

.page-faq .crumbs {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: clamp(1.2rem, 3vw, 2rem);
}

.page-faq .crumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s, border-color 0.18s;
}

.page-faq .crumbs a:hover {
  color: var(--mint);
  border-bottom-color: var(--mint);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(2.1rem, 6.2vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 800;
  margin: 0.4rem 0 0;
  max-width: 22ch;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin: clamp(1rem, 2.5vw, 1.5rem) 0 0;
  max-width: 42rem;
  font-size: clamp(0.97rem, 1.6vw, 1.08rem);
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 分类快捷栏 ---------- */
.page-faq .faq-quicknav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

.page-faq .faq-quicknav a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.55rem 0.9rem;
  border: var(--edge);
  background: var(--card);
  color: var(--paper);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: var(--slab-sm);
  transition: background 0.18s, color 0.18s, transform 0.18s;
}

.page-faq .faq-quicknav a:hover {
  background: var(--mint);
  color: var(--ink);
  transform: translateY(-2px);
}

.page-faq .faq-quicknav .qn-num {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--mint);
  transition: color 0.18s;
}

.page-faq .faq-quicknav a:hover .qn-num {
  color: var(--ink);
}

.page-faq .faq-hero .data-strip {
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

/* ---------- 宽幅图 ---------- */
.page-faq .faq-banner {
  margin: 0;
  border-bottom: var(--edge);
  background: var(--ink);
  overflow: hidden;
}

.page-faq .faq-banner img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 20rem;
  object-fit: cover;
  opacity: 0.85;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-block: clamp(2rem, 5vw, 3.5rem);
}

.page-faq .faq-index {
  border: var(--edge);
  background: var(--card);
  box-shadow: var(--slab-sm);
  padding: 1rem 1rem 1.1rem;
}

.page-faq .faq-index__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--mint);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.3rem;
}

.page-faq .faq-index__list a {
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
  padding: 0.48rem 0.5rem;
  color: var(--paper);
  text-decoration: none;
  font-size: 0.9rem;
  border-left: 2px solid transparent;
  transition: background 0.18s, border-color 0.18s, color 0.18s;
}

.page-faq .faq-index__list a:hover {
  background: var(--pine);
  border-left-color: var(--mint);
  color: var(--mint-soft);
}

.page-faq .faq-index__list span {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--muted);
}

.page-faq .faq-index__foot {
  margin: 0.9rem 0 0;
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-answers {
  display: grid;
  gap: clamp(2rem, 4.5vw, 3.2rem);
  min-width: 0;
}

.page-faq .faq-group {
  border-top: 3px solid var(--line);
  padding-top: 1.1rem;
  min-width: 0;
}

.page-faq .faq-group--mint {
  border-top-color: var(--mint);
}

.page-faq .faq-group--amber {
  border-top-color: var(--amber);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 0.9rem;
  margin-bottom: 0.6rem;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--mint);
  letter-spacing: 0.08em;
}

.page-faq .faq-group--amber .faq-group__num {
  color: var(--amber);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__note {
  margin: 0;
  flex-basis: 100%;
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* ---------- 手风琴 ---------- */
.page-faq .qa {
  margin-top: 0.7rem;
  border: var(--edge);
  background: var(--card);
  box-shadow: var(--slab-sm);
  min-width: 0;
}

.page-faq .qa > summary {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.9rem 1rem;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--paper);
  transition: background 0.18s, color 0.18s;
}

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

.page-faq .qa > summary::before {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1.45;
  color: var(--mint);
}

.page-faq .qa[open] > summary::before {
  content: "\2212";
}

.page-faq .qa[open] > summary {
  background: var(--pine);
  border-bottom: var(--edge);
  color: var(--mint-soft);
}

.page-faq .qa > summary:hover {
  background: var(--pine);
}

.page-faq .qa__body {
  padding: 0.95rem 1rem 1.1rem;
}

.page-faq .qa__body p {
  margin: 0;
  max-width: 44rem;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--paper);
}

.page-faq .qa__body p + p {
  margin-top: 0.6rem;
  color: var(--muted);
}

.page-faq .qa__body a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.18s;
}

.page-faq .qa__body a:hover {
  border-bottom-color: var(--mint);
}

/* ---------- 内嵌图 ---------- */
.page-faq .faq-inline-media {
  margin: 0.8rem 0 0.2rem;
  border: var(--edge);
  background: var(--pine);
  box-shadow: var(--slab-sm);
  overflow: hidden;
}

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

/* ---------- 结尾求助 ---------- */
.page-faq .faq-help {
  border-top: var(--edge);
  background: var(--pine);
  padding: clamp(2rem, 5vw, 3.5rem) 0;
}

.page-faq .faq-help__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 2.8rem);
  align-items: start;
}

.page-faq .faq-help__main h2 {
  margin: 0.4rem 0 0;
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 3.4vw, 2.1rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--paper);
}

.page-faq .faq-help__main p {
  margin: 0.9rem 0 0;
  max-width: 40rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.4rem;
}

.page-faq .faq-help__meta {
  margin: 0;
  border: var(--edge);
  background: var(--card);
  box-shadow: var(--slab-sm);
  padding: 0.4rem 1rem;
}

.page-faq .faq-help__item {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-help__item dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--mint);
  margin-bottom: 0.25rem;
}

.page-faq .faq-help__item dd {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-index) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 5.5rem;
  }

  .page-faq .qa > summary {
    padding: 1rem 1.25rem;
    font-size: 1rem;
  }

  .page-faq .qa__body {
    padding: 1.1rem 1.25rem 1.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quicknav a,
  .page-faq .faq-index__list a,
  .page-faq .qa > summary {
    transition: none;
  }

  .page-faq .faq-quicknav a:hover {
    transform: none;
  }
}
<<<END>>>