.page-faq {
  --faq-index-w: 220px;
  --faq-rule: 1px solid var(--line);
  background: var(--green-ink);
  color: var(--text);
  font-family: var(--font-body);
}

.page-faq a {
  color: inherit;
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  border-bottom: var(--faq-rule);
  background:
    radial-gradient(88% 68% at 8% 0%, rgba(14, 59, 51, 0.95) 0%, rgba(14, 59, 51, 0) 66%),
    radial-gradient(78% 70% at 102% 18%, rgba(16, 42, 74, 0.88) 0%, rgba(16, 42, 74, 0) 62%),
    var(--green-ink);
}

.page-faq .faq-hero-inner {
  display: grid;
  gap: calc(var(--gap) * 1.2);
  padding: clamp(26px, 5vw, 60px) var(--gutter) clamp(22px, 4vw, 44px);
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(18px, 3vw, 30px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.page-faq .breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-faq .breadcrumb a:hover {
  color: var(--lime);
}

.page-faq .faq-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .faq-kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--orange);
}

.page-faq .faq-hero-text h1 {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  font-family: var(--font-display);
  font-size: clamp(34px, 6vw, 70px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-lead {
  margin: 0 0 clamp(20px, 3vw, 30px);
  max-width: 34em;
  padding-left: 16px;
  border-left: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero-media {
  position: relative;
  margin: 0;
  padding: 10px;
  border: var(--faq-rule);
  background: var(--night-blue);
}

.page-faq .faq-hero-media::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 8px;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 12px);
  opacity: 0.85;
}

.page-faq .faq-hero-media::after {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  width: 26px;
  height: 26px;
  border-top: 2px solid var(--lime);
  border-left: 2px solid var(--lime);
}

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

/* ---------- 数据带 ---------- */
.page-faq .faq-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
  margin: 0;
  padding: 0 var(--gutter) clamp(22px, 4vw, 36px);
  list-style: none;
  background: linear-gradient(180deg, rgba(11, 29, 51, 0.72), rgba(11, 29, 51, 0));
}

.page-faq .faq-facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-facts .mono {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--lime);
}

.page-faq .faq-facts li > span:last-child {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  padding: clamp(30px, 5vw, 68px) var(--gutter) clamp(48px, 7vw, 96px);
}

.page-faq .faq-index {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-faq .faq-index-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  text-transform: uppercase;
}

.page-faq .faq-index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-index-list .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--lime);
}

.page-faq .faq-main {
  min-width: 0;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 84px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 5vw, 60px);
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin-bottom: clamp(12px, 2vw, 20px);
}

.page-faq .faq-group-code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  margin-top: 2px;
  background: var(--lime);
  color: var(--green-ink);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.page-faq .faq-group-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(21px, 3vw, 28px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--text);
}

.page-faq .faq-group-note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 问答项 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--line);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-q {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 34px 15px 0;
  font-size: clamp(15px, 2vw, 16.5px);
  line-height: 1.6;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-q::after {
  content: "+";
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-item[open] .faq-q::after {
  content: "−";
}

.page-faq .faq-q:hover {
  color: var(--lime);
}

.page-faq .faq-q-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.page-faq .faq-q-text {
  flex: 1;
  min-width: 0;
}

.page-faq .faq-a {
  padding: 0 30px 18px 0;
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-dim);
}

.page-faq .faq-a p a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 242, 76, 0.4);
}

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

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-item[open] .faq-a {
  animation: faq-answer-in 0.2s var(--ease);
}

/* ---------- 图例 ---------- */
.page-faq .faq-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 14px 0 0;
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: rgba(18, 41, 58, 0.55);
  list-style: none;
}

.page-faq .faq-legend .legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--text-dim);
}

.page-faq .faq-legend .legend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  flex: none;
}

.page-faq .faq-legend .legend-dot--red {
  background: var(--card-red);
}

.page-faq .faq-legend .legend-dot--yellow {
  background: var(--card-yellow);
}

.page-faq .faq-legend .legend-dot--lime {
  background: var(--lime);
}

.page-faq .faq-legend .legend-dot--orange {
  background: var(--orange);
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 10px;
  max-width: 340px;
  border: 1px solid var(--line);
  background: var(--night-blue);
}

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

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  display: grid;
  gap: 20px;
  margin-top: clamp(36px, 5vw, 62px);
  padding: clamp(22px, 4vw, 40px);
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(14, 59, 51, 0.92) 0%, rgba(16, 42, 74, 0.92) 100%);
}

.page-faq .faq-cta h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-cta p {
  margin: 0;
  max-width: 38em;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-faq .faq-cta-meta {
  display: grid;
  gap: 6px;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text);
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-a {
    padding-left: 34px;
  }
}

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

  .page-faq .faq-figure {
    margin-left: auto;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: calc(var(--gap) * 1.6);
  }

  .page-faq .faq-hero-media {
    margin-top: 10px;
  }

  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    align-items: start;
    gap: clamp(32px, 4vw, 60px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-index-list {
    flex-direction: column;
    gap: 0;
    padding: 0;
    overflow: visible;
    border-top: 1px solid var(--line);
  }

  .page-faq .faq-index-list li {
    border-bottom: 1px solid var(--line);
  }

  .page-faq .faq-index-list a {
    position: relative;
    width: 100%;
    padding: 12px 10px 12px 16px;
    border: 0;
    white-space: normal;
  }

  .page-faq .faq-index-list a::after {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: transparent;
    transition: background 0.2s var(--ease);
  }

  .page-faq .faq-index-list a:hover {
    color: var(--text);
    background: rgba(18, 41, 58, 0.5);
  }

  .page-faq .faq-index-list a:hover::after,
  .page-faq .faq-index-list a:focus-visible::after {
    background: var(--lime);
  }
}
<<<END>>>