.page-faq {
  --faq-code-w: 44px;
  --faq-rail-w: 244px;
  display: block;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  overflow-x: clip;
}

/* ---------- 面包屑条 ---------- */
.page-faq .faq-crumb-bar {
  background: var(--ink-2);
  border-bottom: 2px solid var(--line);
}
.page-faq .faq-crumb-bar .wrap {
  padding-top: 12px;
  padding-bottom: 12px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  border-bottom: 2px solid var(--line);
  background:
    radial-gradient(120% 140% at 86% 0%, rgba(47, 224, 208, 0.16) 0%, rgba(47, 224, 208, 0) 58%),
    var(--ink);
}
.page-faq .faq-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  gap: clamp(26px, 5vw, 56px);
  padding-top: clamp(32px, 6vw, 72px);
  padding-bottom: clamp(32px, 6vw, 72px);
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  font-size: clamp(32px, 7vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--paper);
}
.page-faq .faq-lead {
  margin: 20px 0 0;
  max-width: 40ch;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: #CFDCE9;
}
.page-faq .faq-hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 26px;
  padding-top: 16px;
  border-top: 2px solid var(--line);
  font-size: var(--fs-note);
  letter-spacing: 0.08em;
  color: var(--neon);
}
.page-faq .faq-meta-dot {
  color: var(--line);
}

.page-faq .faq-hero-visual {
  max-width: 520px;
  width: 100%;
  justify-self: start;
}
.page-faq .faq-lane {
  display: block;
  width: 100%;
  height: auto;
}
.page-faq .faq-lane-glow path {
  stroke-dasharray: 700;
  stroke-dashoffset: 700;
  animation: faq-lane-sweep 900ms cubic-bezier(.2, .7, .3, 1) 120ms forwards;
}
@keyframes faq-lane-sweep {
  to { stroke-dashoffset: 0; }
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  padding-top: clamp(34px, 5.5vw, 68px);
  padding-bottom: clamp(44px, 7vw, 92px);
}

/* ---------- 左侧分组索引 ---------- */
.page-faq .faq-rail {
  min-width: 0;
}
.page-faq .faq-rail-title {
  margin: 0 0 12px;
  font-size: var(--fs-note);
  letter-spacing: 0.08em;
  color: var(--mist);
  text-transform: uppercase;
}
.page-faq .faq-rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
}
.page-faq .faq-rail-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 14px;
  border-left: 3px solid var(--line);
  background: var(--ink-2);
  color: var(--mist);
  font-size: var(--fs-small);
  line-height: 1.4;
  text-decoration: none;
  transition: color .18s ease, border-color .18s ease, padding-left .18s ease, background .18s ease;
}
.page-faq .faq-rail-list a .mono {
  font-size: var(--fs-note);
  color: var(--neon-deep);
  transition: color .18s ease;
}
.page-faq .faq-rail-list a:hover,
.page-faq .faq-rail-list a:focus-visible {
  color: var(--paper);
  border-left-color: var(--neon);
  background: #16324F;
  padding-left: 20px;
  outline: none;
}
.page-faq .faq-rail-list a:hover .mono,
.page-faq .faq-rail-list a:focus-visible .mono {
  color: var(--neon);
}
.page-faq .faq-rail-note {
  margin: 14px 0 0;
  font-size: var(--fs-note);
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  min-width: 0;
}
.page-faq .faq-group {
  scroll-margin-top: 104px;
}
.page-faq .faq-group + .faq-group {
  margin-top: clamp(40px, 6vw, 78px);
}
.page-faq .faq-group-head {
  border-top: 2px solid var(--line);
  padding-top: 18px;
  margin-bottom: 16px;
}
.page-faq .faq-group-code {
  display: block;
  font-size: var(--fs-note);
  letter-spacing: 0.08em;
  color: var(--neon);
}
.page-faq .faq-group-head h2 {
  margin: 10px 0 8px;
  font-size: var(--fs-h2);
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--paper);
}
.page-faq .faq-group-desc {
  margin: 0;
  max-width: 48ch;
  font-size: var(--fs-small);
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-list {
  border-top: 2px solid var(--line);
}
.page-faq .faq-item {
  border-bottom: 2px solid var(--line);
  background: transparent;
}
.page-faq .faq-item > summary {
  position: relative;
  display: grid;
  grid-template-columns: var(--faq-code-w) minmax(0, 1fr) 24px;
  gap: 0 8px;
  align-items: start;
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
  transition: color .18s ease;
}
.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item > summary::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: var(--neon);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .3s cubic-bezier(.2, .7, .3, 1);
}
.page-faq .faq-item[open] > summary::before {
  transform: scaleX(1);
}
.page-faq .faq-item > summary::after {
  content: "+";
  grid-column: 3;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.15;
  text-align: right;
  color: var(--neon);
  transition: color .18s ease;
}
.page-faq .faq-item[open] > summary::after {
  content: "\2212";
  color: var(--neon-soft);
}
.page-faq .faq-item > summary:hover .faq-q,
.page-faq .faq-item > summary:focus-visible .faq-q {
  color: var(--neon-soft);
}
.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}
.page-faq .faq-code {
  padding-top: 4px;
  font-size: var(--fs-note);
  letter-spacing: 0.08em;
  color: var(--neon);
}
.page-faq .faq-q {
  font-size: clamp(17px, 2.6vw, 21px);
  line-height: 1.45;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
  transition: color .18s ease;
}

.page-faq .faq-a {
  padding: 0 30px 24px calc(var(--faq-code-w) + 8px);
  font-size: var(--fs-small);
  line-height: 1.82;
  color: var(--mist);
  animation: faq-a-fade .24s ease both;
}
@keyframes faq-a-fade {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}
.page-faq .faq-a ol,
.page-faq .faq-a ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}
.page-faq .faq-a ol {
  counter-reset: faqstep;
}
.page-faq .faq-a ol > li {
  position: relative;
  padding-left: 34px;
  counter-increment: faqstep;
}
.page-faq .faq-a ol > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.06em;
  color: var(--neon-deep);
}
.page-faq .faq-a ul > li {
  position: relative;
  padding-left: 22px;
}
.page-faq .faq-a ul > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 12px;
  height: 2px;
  background: var(--line);
}
.page-faq .faq-a-link {
  margin: 14px 0 0;
  font-size: var(--fs-note);
  letter-spacing: 0.04em;
}
.page-faq .faq-a-link a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid var(--neon-deep);
  padding-bottom: 2px;
  transition: color .18s ease, border-color .18s ease;
}
.page-faq .faq-a-link a:hover,
.page-faq .faq-a-link a:focus-visible {
  color: var(--neon-soft);
  border-bottom-color: var(--neon-soft);
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  margin: clamp(28px, 5vw, 48px) 0 0;
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
}
.page-faq .faq-figure figcaption {
  margin-top: 12px;
  padding-left: 14px;
  border-left: 2px solid var(--line);
  font-size: var(--fs-note);
  line-height: 1.65;
  color: var(--mist);
}
.page-faq .faq-figure-wide {
  margin-top: clamp(34px, 6vw, 58px);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(46px, 7vw, 84px);
  padding: clamp(24px, 4vw, 38px);
  border: 2px solid var(--line);
  background: var(--ink-2);
  box-shadow: 8px 8px 0 0 rgba(47, 224, 208, .16);
  display: grid;
  gap: 20px;
}
.page-faq .faq-cta-label {
  margin: 0;
  font-size: var(--fs-note);
  letter-spacing: 0.08em;
  color: var(--amber);
}
.page-faq .faq-cta h2 {
  margin: 10px 0 10px;
  font-size: var(--fs-h3);
  line-height: 1.28;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--paper);
}
.page-faq .faq-cta p {
  margin: 0;
  max-width: 46ch;
  font-size: var(--fs-small);
  line-height: 1.75;
  color: var(--mist);
}
.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq {
    --faq-code-w: 62px;
  }
  .page-faq .faq-a {
    padding-left: calc(var(--faq-code-w) + 10px);
  }
  .page-faq .faq-rail-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
  .page-faq .faq-hero-visual {
    justify-self: end;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
  }
  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
    align-self: start;
  }
  .page-faq .faq-rail-list {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-lane-glow path {
    animation: none;
    stroke-dashoffset: 0;
  }
  .page-faq .faq-a {
    animation: none;
  }
  .page-faq .faq-item > summary::before,
  .page-faq .faq-rail-list a {
    transition: none;
  }
}
</final>
</answer>