.page-faq {
  background: var(--ink-900);
  color: var(--text);
  overflow-x: clip;
}

.page-faq [id] {
  scroll-margin-top: 1.5rem;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.75rem, 5vw, 3.5rem) 0 clamp(2rem, 4vw, 3rem);
  background:
    radial-gradient(circle at 84% 0%, rgba(56, 242, 208, 0.14), transparent 58%),
    linear-gradient(180deg, rgba(18, 41, 63, 0.92), var(--ink-900));
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(216, 222, 226, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(216, 222, 226, 0.055) 1px, transparent 1px);
  background-size: var(--grid-cell) var(--grid-cell);
  pointer-events: none;
}

.page-faq .faq-hero > .shell {
  position: relative;
}

.page-faq .eyebrow {
  margin: 1rem 0 0;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  margin: 0.7rem 0 0;
  max-width: 24ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 5vw, 3.3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--paper);
  overflow-wrap: break-word;
}

.page-faq .faq-hero__lede {
  margin: 1.1rem 0 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

/* ---------- 通用小标签 ---------- */
.page-faq .chip {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line-strong);
  background: rgba(244, 241, 232, 0.03);
  color: var(--text-soft);
  font-size: 0.8125rem;
  line-height: 1.4;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: border-color 0.15s var(--ease), color 0.15s var(--ease), background 0.15s var(--ease);
}

.page-faq .chip:hover,
.page-faq .chip:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(56, 242, 208, 0.08);
}

.page-faq .chip--cyan {
  border-color: var(--line-cyan);
  color: var(--cyan);
}

.page-faq .chip--amber {
  border-color: rgba(245, 165, 36, 0.5);
  color: var(--amber);
}

.page-faq .chip--amber:hover,
.page-faq .chip--amber:focus-visible {
  border-color: var(--amber);
  color: var(--amber);
  background: rgba(245, 165, 36, 0.1);
}

/* ---------- 主体两栏 ---------- */
.page-faq .kb-body {
  padding: clamp(1.75rem, 4vw, 3.5rem) 0 clamp(2.5rem, 5vw, 4rem);
}

.page-faq .kb-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

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

/* ---------- 左侧目录 ---------- */
.page-faq .kb-side {
  border: 1px solid var(--line);
  background: var(--ink-800);
  padding: 1rem 1rem 1.15rem;
}

.page-faq .kb-side__title {
  margin: 0 0 0.75rem;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .kb-index {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .kb-index li + li {
  border-top: 1px solid var(--line);
}

.page-faq .kb-index__link {
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
  padding: 0.55rem 0;
  color: var(--text-soft);
  font-size: 0.875rem;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.15s var(--ease);
}

.page-faq .kb-index__link:hover,
.page-faq .kb-index__link:focus-visible {
  color: var(--cyan);
}

.page-faq .kb-index__num {
  flex: none;
  font-size: 0.75rem;
  color: var(--muted);
}

.page-faq .kb-side__note {
  margin: 1rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-panel {
  padding-bottom: clamp(2rem, 4vw, 3rem);
}

.page-faq .faq-panel + .faq-panel {
  padding-top: clamp(2rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
}

.page-faq .faq-panel__head {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
}

.page-faq .faq-panel__num {
  flex: none;
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-panel__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.4vw, 1.85rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-panel__lede {
  margin: 0.8rem 0 1.5rem;
  max-width: 62ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--text-soft);
}

/* ---------- 总览 ---------- */
.page-faq .cluster-overview {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.page-faq .media-frame {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

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

.page-faq .media-frame__caption {
  padding: 0.6rem 0.8rem;
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .stat-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-faq .stat {
  background: var(--ink-800);
  padding: 0.85rem 1rem;
}

.page-faq .stat dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .stat dd {
  margin: 0.3rem 0 0;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--paper);
}

.page-faq .cluster-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-faq .cluster {
  display: block;
  padding: 1rem;
  background: var(--ink-800);
  color: var(--text);
  text-decoration: none;
  transition: background 0.15s var(--ease);
}

.page-faq .cluster:hover,
.page-faq .cluster:focus-visible {
  background: var(--ink-700);
}

.page-faq .cluster__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}

.page-faq .cluster__code {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .cluster__count {
  font-size: 0.75rem;
  color: var(--sage);
}

.page-faq .cluster__name {
  margin: 0.5rem 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .cluster__desc {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 问答折叠组 ---------- */
.page-faq .qa-list {
  margin-top: 0.25rem;
}

.page-faq .qa {
  border: 1px solid var(--line);
  background: var(--ink-800);
  transition: border-color 0.15s var(--ease);
}

.page-faq .qa + .qa {
  margin-top: 0.5rem;
}

.page-faq .qa:hover {
  border-color: var(--line-strong);
}

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

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.85rem 1rem;
  cursor: pointer;
  list-style: none;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text);
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q::after {
  content: "+";
  flex: none;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .qa[open] .qa__q::after {
  content: "−";
  color: var(--amber);
}

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

.page-faq .qa__id {
  flex: none;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

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

.page-faq .qa__body {
  padding: 0 1rem 0.95rem;
}

.page-faq .qa__body p {
  margin: 0 0 0.6rem;
  padding-left: 0.75rem;
  border-left: 2px solid rgba(56, 242, 208, 0.35);
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--text-soft);
}

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

/* ---------- 路径图 ---------- */
.page-faq .route-list {
  list-style: none;
  display: grid;
  gap: 1px;
  margin: 1.25rem 0 0;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-faq .route {
  display: flex;
  gap: 0.85rem;
  padding: 0.9rem 1rem;
  background: var(--ink-800);
}

.page-faq .route__num {
  flex: none;
  font-size: 1rem;
  line-height: 1.45;
  color: var(--amber);
}

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

.page-faq .route__title {
  margin: 0 0 0.25rem;
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .route__desc {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 排查步骤 ---------- */
.page-faq .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .step {
  display: flex;
  gap: 0.9rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}

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

.page-faq .step__num {
  flex: none;
  align-self: flex-start;
  padding: 0.1rem 0.42rem;
  background: var(--cyan);
  color: var(--ink-900);
  font-size: 0.8125rem;
  line-height: 1.5;
}

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

.page-faq .step__body h3 {
  margin: 0 0 0.3rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .step__body p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.85;
  color: var(--text-soft);
}

/* ---------- 联系 ---------- */
.page-faq .contact-box {
  margin-top: 1.25rem;
  padding: clamp(1.1rem, 3vw, 1.75rem);
  border: 1px solid var(--line-cyan);
  background: linear-gradient(160deg, rgba(18, 41, 63, 0.96), rgba(11, 27, 43, 0.96));
}

.page-faq .contact-box__lede {
  margin: 0 0 1.25rem;
  max-width: 58ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-faq .contact-rows {
  list-style: none;
  display: grid;
  gap: 1px;
  margin: 0 0 1.25rem;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-faq .cc-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.8rem;
  align-items: baseline;
  padding: 0.7rem 0.9rem;
  background: rgba(11, 27, 43, 0.72);
}

.page-faq .cc-row__k {
  flex: none;
  min-width: 5.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .cc-row__v {
  min-width: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--paper);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.page-faq a.cc-row__v:hover,
.page-faq a.cc-row__v:focus-visible {
  color: var(--cyan);
  text-decoration: underline;
}

.page-faq .contact-box__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-faq .cluster-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .stat-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-faq .cluster-overview {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
    gap: 1.5rem;
  }

  .page-faq .route-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .contact-rows {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .kb-grid {
    grid-template-columns: 240px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .kb-side {
    position: sticky;
    top: 1.5rem;
  }
}

@media (max-width: 559px) {
  .page-faq .qa__q {
    padding: 0.8rem 0.85rem;
    font-size: 0.9rem;
  }

  .page-faq .qa__body {
    padding: 0 0.85rem 0.85rem;
  }

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

  .page-faq .faq-panel__head {
    gap: 0.6rem;
  }
}
<<<END>>>