.page-faq {
  --faq-hair: rgba(201, 211, 216, 0.26);
  --faq-brown-hair: rgba(27, 21, 18, 0.16);
  --faq-orange-soft: rgba(255, 106, 42, 0.12);
  --faq-body-text: #4a423c;
  --faq-muted: #6b625b;
  background: var(--ink-900);
  color: var(--warm-white);
  display: block;
}

.page-faq .kb-crumbs {
  padding-top: 18px;
}

.page-faq .kb-crumbs .breadcrumb {
  color: var(--grayblue);
}

.page-faq .kb-crumbs .breadcrumb a {
  color: var(--grayblue);
  text-decoration: none;
}

.page-faq .kb-crumbs .breadcrumb a:hover {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .kb-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 46px) 0 clamp(36px, 6vw, 84px);
}

.page-faq .kb-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201, 211, 216, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 211, 216, 0.07) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(120% 90% at 12% 0%, #000 0%, transparent 72%);
  mask-image: radial-gradient(120% 90% at 12% 0%, #000 0%, transparent 72%);
  pointer-events: none;
}

.page-faq .kb-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
}

.page-faq .kb-hero-copy .display {
  margin: 10px 0 0;
  color: var(--warm-white);
  letter-spacing: -0.02em;
}

.page-faq .kb-hero-copy .lede {
  margin-top: 16px;
  max-width: 46ch;
  color: var(--grayblue);
}

.page-faq .kb-hero-facts {
  list-style: none;
  margin: 24px 0 0;
  padding: 18px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .kb-hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-faq .kb-fact-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--step-4);
  line-height: 1.05;
  color: var(--orange);
  letter-spacing: -0.01em;
}

.page-faq .kb-fact-label {
  font-size: var(--step-1);
  color: var(--grayblue);
  letter-spacing: 0.04em;
}

.page-faq .kb-hero-actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .kb-hero-index {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-faq .kb-hero-index-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(201, 211, 216, 0.7);
  margin-right: 4px;
}

.page-faq .kb-hero-index a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 4px 12px;
  font-size: 13px;
  text-decoration: none;
  color: var(--warm-white);
  border: 1px solid var(--faq-hair);
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-faq .kb-hero-index a:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.page-faq .kb-hero-frame {
  position: relative;
  padding: 10px;
  background: var(--ink-800);
  border: 1px solid var(--faq-hair);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-faq .kb-hero-frame::after {
  content: "";
  position: absolute;
  left: 10px;
  bottom: 10px;
  width: 56px;
  height: 3px;
  background: var(--orange);
}

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

.page-faq .kb-hero-visual .media-cap {
  margin-top: 12px;
  color: var(--grayblue);
  font-size: 12px;
  line-height: 1.6;
}

/* ---------- 知识库外壳 ---------- */
.page-faq .kb-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  padding: clamp(22px, 3.4vw, 46px);
  margin-bottom: clamp(40px, 7vw, 90px);
  background: var(--cream);
  color: var(--brown);
  border: 1px solid var(--faq-brown-hair);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

/* ---------- 左栏索引 ---------- */
.page-faq .kb-rail-inner {
  border-bottom: 1px solid var(--faq-brown-hair);
  padding-bottom: 14px;
}

.page-faq .kb-rail-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faq-muted);
}

.page-faq .kb-rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .kb-rail-list li {
  flex: 0 0 auto;
}

.page-faq .kb-rail-link {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 14px;
  font-size: 14px;
  line-height: 1.3;
  text-decoration: none;
  color: var(--brown);
  border: 1px solid var(--faq-brown-hair);
  white-space: nowrap;
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-faq .kb-rail-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  color: #a1918a;
  letter-spacing: 0.06em;
}

.page-faq .kb-rail-link:hover {
  border-color: var(--orange);
  background: var(--faq-orange-soft);
  color: #a83a10;
}

.page-faq .kb-rail-link:hover .kb-rail-idx {
  color: var(--orange);
}

/* ---------- 正文区 ---------- */
.page-faq .kb-body {
  min-width: 0;
  max-width: 72ch;
}

.page-faq .kb-body a {
  color: #b8431a;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .kb-body a:hover {
  color: var(--orange);
}

.page-faq .kb-section {
  scroll-margin-top: 96px;
  padding-top: clamp(20px, 3vw, 34px);
}

.page-faq .kb-section + .kb-section {
  margin-top: clamp(28px, 4vw, 52px);
  border-top: 1px solid var(--faq-brown-hair);
}

.page-faq .kb-sec-head .index-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(27, 21, 18, 0.3);
}

.page-faq .kb-sec-head h2 {
  margin: 8px 0 0;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--brown);
}

.page-faq .kb-sec-lede {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-body-text);
  max-width: 62ch;
}

.page-faq .kb-afterword {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--faq-muted);
  border-left: 2px solid rgba(216, 179, 106, 0.85);
  padding-left: 12px;
}

/* ---------- 版本对照表 ---------- */
.page-faq .kb-table-note {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.page-faq .kb-table-note p {
  margin: 0;
  font-size: 13px;
  color: var(--faq-muted);
  line-height: 1.6;
}

.page-faq .kb-table-wrap {
  margin-top: 14px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--faq-brown-hair);
  background: var(--warm-white);
}

.page-faq .kb-table-wrap:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.page-faq .kb-table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.6;
}

.page-faq .kb-table-caption {
  text-align: left;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faq-muted);
  border-bottom: 1px solid var(--faq-brown-hair);
}

.page-faq .kb-table th {
  text-align: left;
  padding: 10px 16px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faq-muted);
  background: rgba(27, 21, 18, 0.05);
  border-bottom: 1px solid var(--faq-brown-hair);
  white-space: nowrap;
}

.page-faq .kb-table td {
  padding: 13px 16px;
  vertical-align: top;
  border-bottom: 1px solid rgba(27, 21, 18, 0.09);
  color: var(--faq-body-text);
}

.page-faq .kb-table td:first-child {
  white-space: nowrap;
}

.page-faq .kb-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .kb-table tbody tr:hover td {
  background: rgba(255, 106, 42, 0.06);
}

.page-faq .kb-table tr.is-current td {
  background: var(--faq-orange-soft);
}

.page-faq .kb-table tr.is-current td:first-child {
  box-shadow: inset 3px 0 0 var(--orange);
}

.page-faq .kb-ver {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  font-weight: 700;
  color: var(--brown);
  letter-spacing: 0.02em;
}

.page-faq .kb-ver-tag {
  display: block;
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: #b8431a;
}

/* ---------- 排查条件卡 ---------- */
.page-faq .kb-cond-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .kb-card {
  background: var(--warm-white);
  border: 1px solid var(--faq-brown-hair);
  padding: 18px 18px 20px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-faq .kb-card-kicker {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #b8431a;
}

.page-faq .kb-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.4;
  color: var(--brown);
}

.page-faq .kb-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--faq-body-text);
}

/* ---------- 排查步骤 ---------- */
.page-faq .kb-steps {
  list-style: none;
  counter-reset: kbstep;
  margin: 24px 0 0;
  padding: 0;
}

.page-faq .kb-step {
  position: relative;
  counter-increment: kbstep;
  padding-left: 48px;
  padding-bottom: 20px;
}

.page-faq .kb-step::before {
  content: counter(kbstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #b8431a;
  border: 1px solid rgba(255, 106, 42, 0.55);
  background: var(--faq-orange-soft);
}

.page-faq .kb-step::after {
  content: "";
  position: absolute;
  left: 16px;
  top: 34px;
  bottom: 2px;
  width: 1px;
  background: rgba(27, 21, 18, 0.16);
}

.page-faq .kb-step:last-child {
  padding-bottom: 0;
}

.page-faq .kb-step:last-child::after {
  display: none;
}

.page-faq .kb-step strong {
  display: block;
  margin-bottom: 5px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--brown);
}

.page-faq .kb-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-body-text);
}

.page-faq .kb-figure {
  margin: 22px 0 0;
  max-width: 340px;
}

.page-faq .kb-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-brown-hair);
}

.page-faq .kb-figure .media-cap {
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--faq-muted);
}

/* ---------- 双栏深色面板 ---------- */
.page-faq .kb-split {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-faq .kb-panel {
  background: var(--ink-900);
  color: var(--warm-white);
  padding: 20px 18px 22px;
  border-left: 3px solid var(--cyan);
}

.page-faq .kb-panel--orange {
  border-left-color: var(--orange);
}

.page-faq .kb-panel h3 {
  margin: 0 0 12px;
  font-size: 17px;
  line-height: 1.4;
  color: var(--warm-white);
}

.page-faq .kb-panel p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--grayblue);
}

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

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

.page-faq .kb-list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--grayblue);
}

.page-faq .kb-list li:last-child {
  margin-bottom: 0;
}

.page-faq .kb-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 1px;
  background: var(--orange);
}

.page-faq .kb-panel a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .kb-panel--orange a {
  color: var(--orange);
}

.page-faq .kb-panel a:hover {
  color: var(--warm-white);
}

/* ---------- 偏好设置行 ---------- */
.page-faq .kb-rows {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.page-faq .kb-rows li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 14px 0;
  border-top: 1px solid var(--faq-brown-hair);
}

.page-faq .kb-rows li:last-child {
  border-bottom: 1px solid var(--faq-brown-hair);
}

.page-faq .kb-row-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #b8431a;
}

.page-faq .kb-rows p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--faq-body-text);
}

/* ---------- 反馈模板 ---------- */
.page-faq .kb-template {
  margin: 12px 0 0;
  padding: 16px 16px 18px;
  background: rgba(6, 26, 43, 0.92);
  color: var(--grayblue);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.95;
  white-space: pre-wrap;
  word-break: break-word;
  border-left: 2px solid var(--orange);
  overflow-x: auto;
}

/* ---------- 常见问答 ---------- */
.page-faq .kb-faq {
  margin-top: 18px;
  border-top: 1px solid var(--faq-brown-hair);
}

.page-faq .kb-faq details {
  border-bottom: 1px solid var(--faq-brown-hair);
}

.page-faq .kb-faq summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-height: 44px;
  padding: 14px 0;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--brown);
  list-style: none;
  transition: color var(--t-fast) var(--ease);
}

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

.page-faq .kb-faq summary::before {
  content: "+";
  flex: 0 0 auto;
  width: 18px;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.5;
  color: var(--orange);
}

.page-faq .kb-faq details[open] summary::before {
  content: "\2212";
}

.page-faq .kb-faq summary:hover {
  color: #b8431a;
}

.page-faq .kb-answer {
  margin: 0 0 18px;
  padding-left: 30px;
  font-size: 14px;
  line-height: 1.82;
  color: var(--faq-body-text);
}

/* ---------- 焦点可见 ---------- */
.page-faq a:focus-visible,
.page-faq summary:focus-visible,
.page-faq [tabindex]:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

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

  .page-faq .kb-cond-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-faq .kb-split {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 20px;
  }

  .page-faq .kb-rows li {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
  }

  .page-faq .kb-figure {
    max-width: 380px;
  }
}

@media (min-width: 960px) {
  .page-faq .kb-hero-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-faq .kb-shell {
    grid-template-columns: 238px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 60px);
  }

  .page-faq .kb-rail-inner {
    position: sticky;
    top: 96px;
    border-bottom: 0;
    padding-bottom: 0;
    padding-left: 16px;
    border-left: 1px solid var(--faq-brown-hair);
  }

  .page-faq .kb-rail-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .kb-rail-list li {
    margin-bottom: 4px;
  }

  .page-faq .kb-rail-link {
    border: 0;
    border-left: 2px solid rgba(27, 21, 18, 0.14);
    padding: 8px 0 8px 14px;
    margin-left: -18px;
    white-space: normal;
  }

  .page-faq .kb-rail-link:hover {
    background: transparent;
    border-left-color: var(--orange);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .kb-rail-link,
  .page-faq .kb-hero-index a,
  .page-faq .kb-faq summary {
    transition: none;
  }
}
<<<END>>>