.page-faq {
  background:
    radial-gradient(1100px 560px at 82% -8%, rgba(42, 27, 74, 0.85), transparent 72%),
    var(--void);
  color: var(--ivory);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 3vw, 32px) 0 clamp(24px, 4vw, 48px);
}

.page-faq .faq-trail {
  position: absolute;
  right: -8%;
  top: 6%;
  width: min(760px, 84%);
  height: auto;
  color: var(--cyan);
  opacity: 0.28;
  pointer-events: none;
}

.page-faq .crumbs {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--rock);
  margin-bottom: clamp(16px, 3vw, 28px);
}

.page-faq .crumbs-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .crumbs-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--meteor);
}

.page-faq .crumbs-list a {
  color: var(--rock);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur), border-color var(--dur);
}

.page-faq .crumbs-list a:hover,
.page-faq .crumbs-list a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan-line);
}

.page-faq .faq-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 44px);
  align-items: start;
}

.page-faq .eyebrow {
  margin: 0 0 14px;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: 0.03em;
  color: var(--ivory);
  max-width: 20ch;
}

.page-faq .lede {
  margin: 18px 0 0;
  max-width: 44ch;
  font-size: clamp(0.9375rem, 1.6vw, 1.0625rem);
  line-height: 1.82;
  color: var(--rock);
}

.page-faq .faq-hero-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero-jump a {
  display: inline-block;
  padding: 7px 13px;
  font-size: 0.8125rem;
  letter-spacing: 0.03em;
  color: var(--cyan);
  text-decoration: none;
  border: 1px solid var(--cyan-line);
  background: rgba(66, 232, 209, 0.07);
  clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 0 100%);
  transition: background var(--dur), color var(--dur);
}

.page-faq .faq-hero-jump a:hover,
.page-faq .faq-hero-jump a:focus-visible {
  background: rgba(66, 232, 209, 0.18);
  color: var(--ivory);
}

.page-faq .media-frame {
  margin: 0;
  position: relative;
}

.page-faq .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  filter: saturate(1.05) contrast(1.04);
}

.page-faq .faq-hero-figure {
  border: 1px solid var(--line-strong);
  outline: 1px solid rgba(66, 232, 209, 0.16);
  outline-offset: 6px;
}

.page-faq .media-frame figcaption {
  padding: 10px 2px 0;
  font-size: 0.75rem;
  line-height: 1.7;
  color: var(--meteor);
  letter-spacing: 0.03em;
}

/* ---------- 排查主体 ---------- */
.page-faq .faq-flow {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 24, 48, 0.55), transparent 70%);
}

.page-faq .faq-board {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 28px);
  padding-block: clamp(20px, 4vw, 44px);
}

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px clamp(12px, 2vw, 16px);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 24, 48, 0.94), rgba(7, 13, 31, 0.92));
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

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

.page-faq .filter-btn {
  position: relative;
  appearance: none;
  padding: 8px 14px 8px 27px;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--rock);
  background: transparent;
  border: 1px solid var(--line-strong);
  cursor: pointer;
  transition: color var(--dur), border-color var(--dur), background var(--dur);
}

.page-faq .filter-btn::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--meteor);
  transform: translateY(-50%);
  transition: background var(--dur), box-shadow var(--dur);
}

.page-faq .filter-btn:hover {
  color: var(--ivory);
  border-color: var(--cyan-line);
}

.page-faq .filter-btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .filter-btn[aria-pressed="true"] {
  color: var(--ivory);
  border-color: var(--cyan-line);
  background: rgba(66, 232, 209, 0.1);
}

.page-faq .filter-btn[aria-pressed="true"]::before {
  background: var(--cyan);
  box-shadow: var(--glow-cyan);
}

.page-faq .faq-count {
  margin: 0 0 0 auto;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--rock);
}

.page-faq .faq-count-num {
  color: var(--gold);
  font-size: 0.9375rem;
  margin-right: 2px;
}

.page-faq .faq-index {
  border-left: 1px solid var(--line-strong);
  padding-left: 14px;
}

.page-faq .faq-index-label {
  margin: 0 0 10px;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: var(--meteor);
}

.page-faq .faq-index-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-index-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 0;
  font-size: 0.875rem;
  color: var(--rock);
  text-decoration: none;
  border-bottom: 1px solid rgba(170, 180, 195, 0.12);
  transition: color var(--dur), border-color var(--dur);
}

.page-faq .faq-index-list a .mono {
  color: var(--meteor);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
}

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan-line);
}

.page-faq .faq-index-list a:hover .mono,
.page-faq .faq-index-list a:focus-visible .mono {
  color: var(--cyan);
}

.page-faq .faq-index-note {
  margin: 16px 0 0;
  font-size: 0.75rem;
  line-height: 1.7;
  color: var(--meteor);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .qa-group + .qa-group {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-faq .qa-group-title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 14px;
  padding-bottom: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  letter-spacing: 0.05em;
  color: var(--ivory);
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .qa-group-title .mono {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .qa-item {
  position: relative;
  margin-bottom: 10px;
  border: 1px solid var(--line);
  background: rgba(14, 24, 48, 0.62);
  transition: border-color var(--dur), background var(--dur);
}

.page-faq .qa-item::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: var(--cut-sm);
  height: var(--cut-sm);
  background: linear-gradient(225deg, var(--void) 50%, transparent 50%);
  pointer-events: none;
}

.page-faq .qa-item[open] {
  border-color: var(--cyan-line);
  background: rgba(14, 24, 48, 0.94);
}

.page-faq .qa-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px clamp(12px, 2vw, 18px);
  font-size: 0.9375rem;
  line-height: 1.62;
  color: var(--ivory);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .qa-num {
  flex: none;
  padding-top: 0.3em;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--gold);
}

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

.page-faq .qa-mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 0.3em;
  border: 1px solid var(--line-strong);
  transition: border-color var(--dur), transform var(--dur);
}

.page-faq .qa-mark::before,
.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--rock);
  transform: translate(-50%, -50%);
  transition: background var(--dur), opacity var(--dur);
}

.page-faq .qa-mark::before {
  width: 7px;
  height: 1px;
}

.page-faq .qa-mark::after {
  width: 1px;
  height: 7px;
}

.page-faq .qa-item[open] .qa-mark {
  border-color: var(--cyan);
}

.page-faq .qa-item[open] .qa-mark::before {
  background: var(--cyan);
}

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

.page-faq .qa-a {
  padding: 12px clamp(12px, 2vw, 18px) 16px;
  border-top: 1px dashed var(--line);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--rock);
}

.page-faq .qa-a p {
  margin: 0 0 0.7em;
}

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

.page-faq .qa-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}

.page-faq .qa-a a:hover,
.page-faq .qa-a a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .qa-steps {
  counter-reset: qa-step;
  margin: 0.7em 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .qa-steps li {
  position: relative;
  padding-left: 28px;
  margin-top: 0.45em;
  line-height: 1.72;
}

.page-faq .qa-steps li::before {
  counter-increment: qa-step;
  content: counter(qa-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.2em;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .qa-facts {
  margin: 0.7em 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .qa-facts li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  padding: 7px 0;
  border-bottom: 1px solid rgba(170, 180, 195, 0.14);
}

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

.page-faq .qa-facts .mono {
  flex: none;
  min-width: 5.5em;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--meteor);
  padding-top: 0.2em;
}

.page-faq .qa-fact-value {
  color: var(--ivory);
  word-break: break-word;
}

.page-faq .qa-group--help .qa-item {
  background: rgba(42, 27, 74, 0.42);
}

/* ---------- 服务与响应 ---------- */
.page-faq .faq-help {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(158deg, rgba(42, 27, 74, 0.92), rgba(7, 13, 31, 0.96) 72%);
  padding: clamp(28px, 5vw, 60px) 0;
}

.page-faq .faq-help-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 48px);
  align-items: center;
}

.page-faq .faq-help h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.5rem, 3.4vw, 2.3rem);
  line-height: 1.22;
  letter-spacing: 0.04em;
  color: var(--ivory);
}

.page-faq .faq-help-copy p {
  margin: 0 0 1em;
  max-width: 46ch;
  font-size: 0.9375rem;
  line-height: 1.82;
  color: var(--rock);
}

.page-faq .faq-hours {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 18px 0;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--ivory);
  background: rgba(244, 196, 94, 0.1);
  border-left: 3px solid var(--gold);
}

.page-faq .faq-hours-bar {
  flex: none;
  width: 26px;
  height: 6px;
  background: repeating-linear-gradient(90deg, var(--gold) 0 3px, transparent 3px 6px);
}

.page-faq .faq-help-links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-help-links a {
  display: inline-block;
  padding: 9px 15px;
  font-size: 0.8125rem;
  letter-spacing: 0.03em;
  color: var(--cyan);
  text-decoration: none;
  border: 1px solid var(--cyan-line);
  clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 0 100%);
  transition: background var(--dur), color var(--dur);
}

.page-faq .faq-help-links a:hover,
.page-faq .faq-help-links a:focus-visible {
  background: rgba(66, 232, 209, 0.16);
  color: var(--ivory);
}

.page-faq .faq-help-figure {
  border: 1px solid var(--line-strong);
}

.page-faq .faq-help-figure img {
  aspect-ratio: 10 / 7;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
  }

  .page-faq .faq-board {
    grid-template-columns: 216px minmax(0, 1fr);
    column-gap: clamp(24px, 4vw, 56px);
  }

  .page-faq .faq-filter {
    grid-column: 1 / -1;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-faq .faq-help-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-trail,
  .page-faq .filter-btn,
  .page-faq .qa-mark,
  .page-faq .qa-mark::before,
  .page-faq .qa-mark::after {
    transition: none;
    animation: none;
  }
}
<<<END>>>