.page-faq {
  --faq-line: rgba(159, 201, 198, 0.22);
  --faq-line-soft: rgba(159, 201, 198, 0.14);
  --faq-panel: rgba(11, 47, 56, 0.55);
  padding-bottom: clamp(48px, 8vw, 96px);
  background:
    radial-gradient(115% 85% at 92% -8%, rgba(45, 226, 230, 0.13), transparent 62%),
    radial-gradient(80% 60% at -5% 4%, rgba(124, 92, 255, 0.12), transparent 58%);
}

.page-faq .breadcrumbs {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 18px var(--gutter) 0;
}

.page-faq .breadcrumbs-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.page-faq .breadcrumbs-link {
  color: var(--tide-300);
  text-decoration: none;
}

.page-faq .breadcrumbs-link:hover {
  color: var(--cyan-400);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -30%;
  width: 78%;
  height: 118%;
  background: linear-gradient(135deg, rgba(45, 226, 230, 0.1), rgba(255, 107, 74, 0.07));
  transform: skewX(-9deg);
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(24px, 5vw, 44px) var(--gutter) clamp(34px, 6vw, 60px);
}

.page-faq .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-faq h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 7.4vw, 62px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--mist-050);
}

.page-faq .lede {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--tide-300);
}

.page-faq .hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .stat-num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--cyan-400);
  line-height: 1;
}

.page-faq .stat-label {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.page-faq .hero-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--faq-line);
  background: linear-gradient(160deg, var(--deep-800), var(--ink-900));
  clip-path: polygon(0 0, 100% 0, 100% 88%, 88% 100%, 0 100%);
}

.page-faq .hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 700;
  object-fit: cover;
}

.page-faq .hero-figure-tag {
  position: absolute;
  left: 12px;
  bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  padding: 4px 9px;
  color: var(--ink-900);
  background: var(--paper-050);
  transform: rotate(-2deg);
}

/* ---------- 主体：分类栏 + 叠放手册 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: 26px;
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(30px, 6vw, 62px) var(--gutter) 0;
}

.page-faq .faq-rail {
  display: grid;
  gap: 16px;
  padding: 18px 16px 20px;
  background: var(--bg-panel);
  border: 1px solid var(--faq-line);
  box-shadow: var(--shadow-panel);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.page-faq .rail-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--tide-300);
}

.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .filter-chip {
  appearance: none;
  border: 1px solid var(--faq-line);
  background: transparent;
  color: var(--tide-300);
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1;
  padding: 8px 12px;
  border-radius: 2px;
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .filter-chip:hover {
  color: var(--mist-050);
  border-color: var(--line-strong);
}

.page-faq .filter-chip[aria-pressed="true"] {
  background: var(--cyan-400);
  border-color: var(--cyan-400);
  color: var(--ink-900);
  font-weight: 600;
}

.page-faq .filter-status {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: rgba(159, 201, 198, 0.8);
}

.page-faq .rail-nav {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 1px dashed var(--faq-line);
}

.page-faq .rail-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 8px;
  font-size: 14px;
  color: var(--text-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .rail-link:hover,
.page-faq .rail-link:focus-visible {
  color: var(--mist-050);
  background: rgba(45, 226, 230, 0.07);
  border-left-color: var(--cyan-400);
}

.page-faq .rail-num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--coral-500);
}

/* 叠放手册页 */
.page-faq .faq-body {
  display: grid;
  min-width: 0;
}

.page-faq .qa-section {
  position: relative;
  padding: clamp(20px, 4vw, 30px) clamp(16px, 3.4vw, 30px) clamp(22px, 4vw, 32px);
  background: var(--faq-panel);
  border: 1px solid var(--faq-line);
  box-shadow: var(--shadow-panel);
}

.page-faq .qa-section + .qa-section {
  margin-top: -1px;
}

.page-faq .qa-section::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  width: 3px;
  height: 42px;
  background: linear-gradient(180deg, var(--cyan-400), transparent);
}

.page-faq .qs-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding-bottom: 14px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .qs-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--coral-500);
  border: 1px solid rgba(255, 107, 74, 0.5);
  padding: 2px 7px;
}

.page-faq .qs-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 4.4vw, 30px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--mist-050);
}

.page-faq .qs-note {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--amber-500);
  border: 1px dashed rgba(255, 176, 32, 0.45);
  padding: 2px 8px;
}

.page-faq .qs-lede {
  margin: 14px 0 4px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--tide-300);
  max-width: 62ch;
}

/* 问答 */
.page-faq .qa {
  border-bottom: 1px solid var(--faq-line-soft);
}

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

.page-faq .qa-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--mist-050);
  transition: color 0.2s var(--ease);
}

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

.page-faq .qa-q::before {
  content: "";
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 8px;
  border-radius: 50%;
  border: 1.5px solid var(--cyan-400);
}

.page-faq .qa-q::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.2;
  color: var(--cyan-400);
}

.page-faq .qa[open] .qa-q::after {
  content: "–";
}

.page-faq .qa[open] .qa-q::before {
  background: var(--coral-500);
  border-color: var(--coral-500);
}

.page-faq .qa-q:hover {
  color: var(--cyan-400);
}

.page-faq .qa-a {
  padding: 0 0 16px 21px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--tide-300);
}

.page-faq .qa-a p {
  margin: 0 0 10px;
}

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

.page-faq .qa-a a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(45, 226, 230, 0.4);
}

.page-faq .qa-a a:hover {
  color: var(--mist-050);
  border-bottom-color: var(--coral-500);
}

.page-faq .dim-list {
  margin: 0 0 10px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-faq .dim-list li {
  position: relative;
  padding-left: 16px;
  line-height: 1.8;
}

.page-faq .dim-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  background: var(--violet-500);
}

.page-faq .dim-list strong {
  color: var(--mist-050);
  font-weight: 600;
}

/* 资源下载图与步骤 */
.page-faq .reports-figure {
  margin: 22px 0 0;
  padding: 8px;
  background: var(--paper-050);
  border: 1px solid var(--faq-line);
  transform: rotate(-0.6deg);
}

.page-faq .reports-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 600;
  object-fit: cover;
}

.page-faq .figure-caption {
  margin: 8px 2px 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--deep-800);
}

.page-faq .step-rail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 8px;
  margin: 22px 0 0;
}

.page-faq .step-dot {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 2px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  text-decoration: none;
}

.page-faq .step-dot::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 2px solid var(--cyan-400);
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .step-dot:hover,
.page-faq .step-dot:focus-visible {
  color: var(--mist-050);
}

.page-faq .step-dot:hover::before {
  background: var(--coral-500);
  border-color: var(--coral-500);
}

.page-faq .step-line {
  flex: 1 1 18px;
  min-width: 14px;
  height: 1px;
  background: var(--faq-line);
}

.page-faq .dl-steps {
  margin: 16px 0 4px;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .dl-step {
  position: relative;
  padding: 13px 0 13px 46px;
  border-top: 1px dashed var(--faq-line);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--tide-300);
}

.page-faq .dl-step::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 13px;
  padding: 2px 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-900);
  background: var(--cyan-400);
}

.page-faq .dl-step:target {
  background: rgba(255, 107, 74, 0.09);
}

.page-faq .dl-step a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(45, 226, 230, 0.4);
}

.page-faq .dl-step a:hover {
  color: var(--mist-050);
  border-bottom-color: var(--coral-500);
}

/* 联系卡片 */
.page-faq .contact-grid {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.page-faq .contact-card {
  padding: 14px 16px;
  background: rgba(6, 27, 34, 0.62);
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--coral-500);
}

.page-faq .contact-k {
  display: block;
  margin-bottom: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--tide-300);
}

.page-faq .contact-v {
  display: block;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist-050);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .contact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .qa-q {
    font-size: 16px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: 1.12fr 0.88fr;
    align-items: end;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .hero-figure {
    transform: translateY(6px);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: 264px minmax(0, 1fr);
    align-items: start;
    gap: clamp(26px, 3.6vw, 52px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }

  .page-faq .qa-section:nth-child(odd) {
    transform: translateX(10px);
  }

  .page-faq .qa-section:nth-child(even) {
    transform: translateX(-4px);
  }
}

@media (min-width: 1180px) {
  .page-faq .qa-a {
    padding-left: 24px;
    max-width: 68ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-section,
  .page-faq .hero-figure,
  .page-faq .reports-figure,
  .page-faq .hero-figure-tag {
    transform: none;
  }

  .page-faq .filter-chip,
  .page-faq .rail-link,
  .page-faq .qa-q,
  .page-faq .step-dot::before {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>