.page-faq {
  --faq-card: #0C2A40;
  --faq-card-deep: #092235;
  --faq-radius: 16px;
  background: var(--sea-900);
  color: var(--fog);
  padding-bottom: clamp(2rem, 6vw, 4rem);
  overflow-x: clip;
}

.page-faq .faq-crumbs {
  padding-top: clamp(6rem, 12vw, 8rem);
  padding-bottom: .5rem;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-masthead {
  position: relative;
  padding: clamp(1.25rem, 3vw, 2rem) 0 clamp(2rem, 5vw, 3.25rem);
  background:
    radial-gradient(700px 320px at 12% 0%, rgba(46, 211, 198, .12), transparent 70%),
    radial-gradient(560px 300px at 88% 20%, rgba(255, 107, 74, .12), transparent 72%);
}

.page-faq .faq-masthead-grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  grid-template-columns: 1fr;
}

.page-faq .faq-eyebrow {
  margin: 0 0 .85rem;
  font-family: var(--ff-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--sand);
  text-transform: none;
}

.page-faq .faq-masthead h1 {
  margin: 0 0 1.1rem;
  font-family: var(--ff-head);
  font-weight: 900;
  font-size: clamp(2rem, 6.2vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--fog);
  max-width: 18ch;
}

.page-faq .faq-lede {
  margin: 0 0 1.6rem;
  max-width: 42ch;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
  margin: 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column-reverse;
  gap: .2rem;
}

.page-faq .faq-stat-num {
  margin: 0;
  font-family: var(--ff-mono);
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--sand);
  letter-spacing: .01em;
}

.page-faq .faq-stat-label {
  font-size: var(--fs-12);
  color: var(--mist);
  letter-spacing: .04em;
}

.page-faq .faq-masthead-visual {
  margin: 0;
  border: 1px solid var(--line);
  overflow: hidden;
}

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

/* ---------- 六类入口 ---------- */
.page-faq .faq-cats {
  padding: clamp(1.5rem, 4vw, 2.5rem) 0 clamp(2rem, 4vw, 2.75rem);
}

.page-faq .faq-cats-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .5rem 1.25rem;
  margin-bottom: 1.5rem;
}

.page-faq .faq-cats-title {
  margin: 0;
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: var(--fs-28);
  letter-spacing: -.01em;
  color: var(--fog);
}

.page-faq .faq-cats-note {
  margin: 0;
  font-size: var(--fs-14);
  color: var(--mist);
}

.page-faq .faq-cat-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: .75rem;
}

.page-faq .faq-cat {
  --cat-accent: var(--teal);
  position: relative;
  background: linear-gradient(160deg, var(--faq-card), var(--faq-card-deep));
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-cat::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--cat-accent);
}

.page-faq .faq-cat:nth-child(2) { --cat-accent: var(--coral); }
.page-faq .faq-cat:nth-child(3) { --cat-accent: var(--sand); }
.page-faq .faq-cat:nth-child(4) { --cat-accent: var(--mist); }
.page-faq .faq-cat:nth-child(5) { --cat-accent: var(--coral-deep); }
.page-faq .faq-cat:nth-child(6) { --cat-accent: var(--teal); }

.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-within {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.page-faq .faq-cat-link {
  display: grid;
  gap: .35rem;
  padding: 1.1rem 1.15rem 1.15rem;
  color: inherit;
  text-decoration: none;
  height: 100%;
}

.page-faq .faq-cat-link:focus-visible {
  outline: 2px solid var(--sand);
  outline-offset: 2px;
}

.page-faq .faq-cat-icon {
  font-family: var(--ff-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--cat-accent);
}

.page-faq .faq-cat-title {
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: var(--fs-20);
  color: var(--fog);
  letter-spacing: -.01em;
}

.page-faq .faq-cat-desc {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-cat-more {
  margin-top: .5rem;
  font-size: var(--fs-12);
  letter-spacing: .05em;
  color: var(--cat-accent);
}

/* ---------- 两栏主体 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  align-items: start;
  padding-top: clamp(1rem, 3vw, 1.5rem);
}

.page-faq .faq-rail {
  display: grid;
  gap: .9rem;
}

.page-faq .faq-rail-block {
  background: var(--faq-card-deep);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  padding: 1.1rem 1.15rem 1.25rem;
}

.page-faq .faq-rail-block--accent {
  border-color: rgba(255, 107, 74, .42);
  background:
    radial-gradient(300px 160px at 100% 0%, rgba(255, 107, 74, .16), transparent 70%),
    var(--faq-card-deep);
}

.page-faq .faq-rail-title {
  margin: 0 0 .55rem;
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: var(--fs-16);
  letter-spacing: -.005em;
  color: var(--fog);
}

.page-faq .faq-rail-meta {
  margin: 0 0 .75rem;
  font-family: var(--ff-mono);
  font-size: var(--fs-12);
  color: var(--sand);
  letter-spacing: .04em;
}

.page-faq .faq-rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .55rem;
  font-size: var(--fs-14);
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .faq-rail-list li {
  padding-left: .95rem;
  position: relative;
}

.page-faq .faq-rail-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--teal);
}

.page-faq .faq-rail-list--links li::before {
  background: var(--sand);
}

.page-faq .faq-rail-list--links a {
  color: var(--fog);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-rail-list--links a:hover,
.page-faq .faq-rail-list--links a:focus-visible {
  color: var(--teal);
  border-bottom-color: var(--teal);
}

.page-faq .faq-rail-link {
  display: inline-block;
  margin-top: .9rem;
  font-size: var(--fs-14);
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 211, 198, .4);
}

.page-faq .faq-rail-text {
  margin: 0 0 1rem;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-rail-block .btn {
  display: inline-block;
  text-decoration: none;
  font-size: var(--fs-14);
  padding: .6rem 1.1rem;
}

/* ---------- 问答组 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.5rem);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 6rem;
}

.page-faq .faq-group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem .75rem;
  margin-bottom: .9rem;
  padding-bottom: .65rem;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group-index {
  font-family: var(--ff-mono);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--sand);
  padding: .15rem .45rem;
  border: 1px solid rgba(230, 181, 102, .35);
  border-radius: 4px;
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: var(--fs-28);
  letter-spacing: -.01em;
  color: var(--fog);
}

.page-faq .faq-group-lede {
  margin: 0 0 1.1rem;
  max-width: 44ch;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-item {
  background: linear-gradient(175deg, rgba(22, 62, 87, .55), rgba(9, 34, 53, .85));
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: .6rem;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(46, 211, 198, .4);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  padding: .95rem 1.05rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--ff-head);
  font-weight: 700;
  font-size: var(--fs-16);
  line-height: 1.6;
  color: var(--fog);
}

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

.page-faq .faq-q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--ff-mono);
  font-size: var(--fs-20);
  line-height: 1;
  color: var(--teal);
}

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

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--sand);
  outline-offset: -2px;
  border-radius: 12px;
}

.page-faq .faq-a {
  padding: 0 1.05rem 1.05rem;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-a p {
  margin: 0 0 .75rem;
}

.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-a-lead {
  color: var(--fog);
}

.page-faq .faq-steps {
  margin: 0 0 .85rem;
  padding-left: 1.15rem;
  display: grid;
  gap: .35rem;
  counter-reset: faqstep;
  list-style: none;
}

.page-faq .faq-steps li {
  position: relative;
  padding-left: 1.1rem;
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .1em;
  font-family: var(--ff-mono);
  font-size: var(--fs-12);
  color: var(--teal);
}

.page-faq .faq-figure {
  margin: 1.1rem 0 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

.page-faq .media-caption {
  display: block;
  padding: .6rem .85rem;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--mist);
  background: rgba(4, 18, 28, .55);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-a .btn {
  display: inline-block;
  margin-top: .35rem;
  font-size: var(--fs-12);
  padding: .5rem .9rem;
}

/* ---------- 账务节点 ---------- */
.page-faq .faq-nodes {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0 0 0 1.4rem;
  position: relative;
  display: grid;
  gap: .7rem;
}

.page-faq .faq-nodes::before {
  content: "";
  position: absolute;
  left: 5px;
  top: .6rem;
  bottom: .6rem;
  width: 1px;
  background: linear-gradient(180deg, var(--teal), rgba(46, 211, 198, .1));
}

.page-faq .faq-node {
  position: relative;
  background: var(--faq-card-deep);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: .8rem .95rem;
}

.page-faq .faq-node::before {
  content: "";
  position: absolute;
  left: calc(-1.4rem + 1px);
  top: 1.15rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--sea-900);
  border: 2px solid var(--teal);
}

.page-faq .faq-node-id {
  display: block;
  font-family: var(--ff-mono);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--sand);
}

.page-faq .faq-node-name {
  margin: .15rem 0 .35rem;
  font-family: var(--ff-head);
  font-weight: 800;
  font-size: var(--fs-16);
  color: var(--fog);
  letter-spacing: -.005em;
}

.page-faq .faq-node-text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 底部行动 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding: clamp(1.75rem, 5vw, 3rem) 0;
  background:
    radial-gradient(520px 260px at 8% 0%, rgba(46, 211, 198, .14), transparent 72%),
    radial-gradient(520px 260px at 92% 100%, rgba(255, 107, 74, .16), transparent 72%),
    var(--sea-950);
  border-top: 1px solid var(--line);
}

.page-faq .faq-cta-inner {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
  align-items: center;
}

.page-faq .faq-cta-title {
  margin: 0 0 .7rem;
  font-family: var(--ff-head);
  font-weight: 900;
  font-size: var(--fs-28);
  letter-spacing: -.015em;
  color: var(--fog);
  max-width: 20ch;
}

.page-faq .faq-cta-text {
  margin: 0;
  max-width: 46ch;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
}

.page-faq .faq-cta-actions .btn {
  display: inline-block;
  text-decoration: none;
  font-size: var(--fs-14);
  padding: .72rem 1.15rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-cat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-nodes {
    padding-left: 0;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .75rem;
  }

  .page-faq .faq-nodes::before {
    display: none;
  }

  .page-faq .faq-node::before {
    left: .95rem;
    top: auto;
    bottom: -4.5px;
  }

  .page-faq .faq-node {
    padding-top: 1.15rem;
  }

  .page-faq .faq-cta-inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 2rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-masthead-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

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

  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 6.5rem;
  }

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

  .page-faq .faq-masthead h1 {
    max-width: 15ch;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-cat-link {
    padding: 1.25rem 1.3rem 1.35rem;
  }

  .page-faq .faq-q {
    font-size: 1.0625rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .faq-item,
  .page-faq .faq-rail-list--links a {
    transition: none;
  }

  .page-faq .faq-cat:hover,
  .page-faq .faq-cat:focus-within {
    transform: none;
  }
}
<<<END>>>