.page-faq {
  --faq-pad: clamp(40px, 6vw, 88px);
  --faq-gap: clamp(20px, 3vw, 36px);
  position: relative;
  display: block;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 3vw, 34px) 0 clamp(32px, 4vw, 52px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 70% 80% at 88% 0%, rgba(111, 231, 216, 0.09), transparent 62%),
    radial-gradient(ellipse 50% 60% at 4% 100%, rgba(200, 255, 77, 0.06), transparent 65%),
    var(--ink);
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
  margin-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero-copy h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.2vw, 60px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--paper);
}

.page-faq .faq-lede {
  margin: clamp(16px, 2vw, 22px) 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-faq .faq-hero-media {
  position: relative;
  isolation: isolate;
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.65) contrast(1.06) brightness(0.85);
}

.page-faq .faq-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(200, 255, 77, 0.16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(200, 255, 77, 0.10) 1px, transparent 1px);
  background-size: 44px 44px;
}

.page-faq .faq-hero-caption {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 2;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--lime);
  background: rgba(7, 28, 23, 0.78);
  padding: 5px 9px;
  border-left: 2px solid var(--lime);
}

/* ---------- 顶部分类索引 ---------- */
.page-faq .faq-index {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-faq .faq-index-track {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-index-track a {
  display: block;
  padding: 14px 12px;
  background: var(--field);
  color: var(--paper);
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease;
}

.page-faq .faq-index-track a:hover,
.page-faq .faq-index-track a:focus-visible {
  background: var(--grid);
  color: var(--lime);
}

.page-faq .idx-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--orange);
  margin-bottom: 6px;
}

.page-faq .idx-label {
  display: block;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  padding: var(--faq-pad) 0;
}

.page-faq .faq-rail {
  display: none;
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  border-top: 1px solid var(--line);
  padding-top: clamp(26px, 3.4vw, 40px);
  margin-top: clamp(26px, 3.4vw, 40px);
  scroll-margin-top: 96px;
}

.page-faq .faq-group:first-child {
  border-top: 0;
  padding-top: 0;
  margin-top: 0;
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 14px;
  align-items: baseline;
}

.page-faq .faq-group-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--lime);
  padding-top: 6px;
}

.page-faq .faq-group-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 2.8vw, 30px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-group-desc {
  margin: 12px 0 6px;
  max-width: 54ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 手风琴 ---------- */
.page-faq .qa-item {
  border-top: 1px solid var(--line);
}

.page-faq .qa-item:first-of-type {
  margin-top: 14px;
}

.page-faq .qa-item > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 17px 0;
  list-style: none;
  cursor: pointer;
  color: var(--paper);
  font-family: var(--font-display);
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -0.01em;
  transition: color 140ms ease;
}

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

.page-faq .qa-item > summary::marker {
  content: "";
}

.page-faq .qa-item > summary:hover,
.page-faq .qa-item > summary:focus-visible {
  color: var(--lime);
}

.page-faq .qa-num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--orange);
  padding-top: 4px;
  white-space: nowrap;
}

.page-faq .qa-title {
  min-width: 0;
}

.page-faq .qa-mark {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 4px;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  flex: none;
}

.page-faq .qa-mark::before,
.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  background: var(--lime);
  transition: transform 140ms ease, opacity 140ms ease;
}

.page-faq .qa-mark::before {
  left: 3px;
  right: 3px;
  top: 6px;
  height: 1px;
}

.page-faq .qa-mark::after {
  top: 3px;
  bottom: 3px;
  left: 6px;
  width: 1px;
}

.page-faq .qa-item[open] .qa-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa-item[open] > summary {
  color: var(--lime);
}

.page-faq .qa-answer {
  position: relative;
  margin: 0;
  padding: 0 0 22px 26px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .qa-answer::before {
  content: "";
  position: absolute;
  left: 5px;
  top: -4px;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(to bottom, var(--lime), rgba(200, 255, 77, 0));
}

.page-faq .qa-answer p {
  margin: 0;
}

/* ---------- 数据配图 ---------- */
.page-faq .faq-figure {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: 100%;
  border: 1px solid var(--line);
  background: var(--field);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  filter: saturate(0.7) contrast(1.05);
}

.page-faq .faq-figure figcaption {
  padding: 12px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* ---------- 联系面板 ---------- */
.page-faq .faq-contact {
  margin-top: clamp(24px, 3.4vw, 36px);
  padding: clamp(22px, 3.4vw, 34px);
  background: var(--paper);
  color: var(--ink);
  border-left: 4px solid var(--orange);
}

.page-faq .faq-contact-title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--field);
}

.page-faq .faq-contact-list {
  margin: 0;
}

.page-faq .faq-contact-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding: 11px 0;
  border-top: 1px solid rgba(14, 43, 35, 0.18);
}

.page-faq .faq-contact-row:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-contact-row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--grid);
}

.page-faq .faq-contact-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
  word-break: break-word;
}

.page-faq .faq-contact-note {
  margin: 18px 0 20px;
  padding-top: 14px;
  border-top: 1px dashed rgba(14, 43, 35, 0.28);
  font-size: 13px;
  line-height: 1.7;
  color: var(--field);
}

.page-faq .faq-contact .btn {
  min-height: 44px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-contact-row {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-index-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-index-track a {
    padding: 16px 14px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 60px);
  }

  .page-faq .faq-hero-media {
    margin-top: 6px;
  }

  .page-faq .faq-figure {
    max-width: 560px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-faq .faq-rail {
    display: block;
    position: sticky;
    top: 96px;
    align-self: start;
    padding-left: 16px;
    border-left: 1px solid var(--line);
  }

  .page-faq .rail-title {
    margin: 0 0 14px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    color: var(--mist);
  }

  .page-faq .rail-list {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .page-faq .rail-list li {
    margin-bottom: 2px;
  }

  .page-faq .rail-list a {
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding: 8px 0;
    color: var(--mist);
    text-decoration: none;
    font-size: 13px;
    line-height: 1.4;
    transition: color 140ms ease;
  }

  .page-faq .rail-list a:hover,
  .page-faq .rail-list a:focus-visible {
    color: var(--lime);
  }

  .page-faq .rail-num {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.1em;
    color: var(--orange);
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-index-track {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-faq .faq-group-desc {
    padding-left: 38px;
  }

  .page-faq .qa-answer {
    padding-left: 40px;
  }

  .page-faq .qa-answer::before {
    left: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index-track a,
  .page-faq .qa-item > summary,
  .page-faq .qa-mark::before,
  .page-faq .qa-mark::after,
  .page-faq .rail-list a {
    transition: none;
  }
}
<<<END>>>