.page-faq {
  --faq-sticky-top: 104px;
  --faq-indent: 92px;
  background: var(--bg);
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 26px 0 16px;
  font-size: 13px;
  color: var(--muted);
}
.page-faq .crumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-faq .crumbs a:hover {
  color: var(--neon);
  border-color: var(--neon);
}

/* ---------- 页头标题带 ---------- */
.page-faq .page-head {
  position: relative;
  padding: 4px 0 38px;
  border-bottom: 1px solid var(--rule);
}
.page-faq .page-head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 88px;
  height: 2px;
  background: var(--neon);
}
.page-faq .page-head-num {
  margin: 0 0 16px;
  font-family: var(--f-mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--amber);
}
.page-faq .page-head-title {
  margin: 0;
  max-width: 15em;
  font-family: var(--f-display);
  font-weight: 600;
  font-size: clamp(32px, 5.4vw, 62px);
  line-height: 1.06;
  letter-spacing: -.01em;
  color: var(--ink);
}
.page-faq .ph-lead {
  margin: 22px 0 0;
  max-width: 660px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .ph-facts {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  max-width: 760px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.page-faq .ph-facts li {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 15px 16px;
  background: var(--panel);
}
.page-faq .ph-k {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .13em;
  color: var(--muted);
}
.page-faq .ph-v {
  font-family: var(--f-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--neon);
}

/* ---------- 页面栅格 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding: 34px 0 60px;
}

/* ---------- 左侧粘性步骤目录 ---------- */
.page-faq .faq-rail {
  min-width: 0;
}
.page-faq .faq-rail-title {
  margin: 0 0 12px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--amber);
}
.page-faq .faq-rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}
.page-faq .faq-rail-list::-webkit-scrollbar {
  display: none;
}
.page-faq .rail-node {
  flex: 0 0 auto;
}
.page-faq .rail-node a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--muted);
  text-decoration: none;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-left: 2px solid transparent;
  border-radius: var(--radius);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-faq .rail-node a:hover {
  color: var(--ink);
  border-color: var(--rule);
}
.page-faq .rail-idx {
  font-family: var(--f-mono);
  font-size: 11.5px;
  color: var(--amber);
}
.page-faq .rail-node[data-active] a {
  color: var(--neon);
  background: var(--card);
  border-color: var(--rule);
  border-left-color: var(--neon);
}

/* ---------- 步骤主体 ---------- */
.page-faq .faq-body {
  min-width: 0;
}
.page-faq .faq-step {
  position: relative;
  padding: 40px 0 52px;
  border-top: 1px solid var(--rule);
  scroll-margin-top: var(--faq-sticky-top);
}
.page-faq .faq-step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 46px;
  height: 1px;
  background: var(--neon);
}
.page-faq .faq-step-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px 18px;
  align-items: baseline;
  margin-bottom: 22px;
}
.page-faq .faq-step-num {
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: clamp(36px, 6.4vw, 58px);
  line-height: .82;
  letter-spacing: -.03em;
  color: var(--neon);
  opacity: .38;
}
.page-faq .faq-step-title {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 600;
  font-size: clamp(21px, 3.1vw, 33px);
  line-height: 1.22;
  color: var(--ink);
}
.page-faq .faq-step-body {
  min-width: 0;
}

/* ---------- 段落与内嵌小标题 ---------- */
.page-faq .faq-p {
  margin: 0 0 18px;
  max-width: 700px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink);
}
.page-faq .faq-h3 {
  margin: 30px 0 12px;
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: .02em;
  color: var(--ink);
}

/* ---------- 编号流程列表 ---------- */
.page-faq .order-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}
.page-faq .order-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-top: 1px solid var(--rule);
}
.page-faq .order-item:last-child {
  border-bottom: 1px solid var(--rule);
}
.page-faq .order-idx {
  display: block;
  min-width: 30px;
  padding-top: 3px;
  font-family: var(--f-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--amber);
}
.page-faq .order-title {
  margin: 0 0 7px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}
.page-faq .order-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}
.page-faq .order-check {
  margin: 11px 0 0;
  padding-left: 13px;
  border-left: 2px solid var(--mint);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}
.page-faq .order-check span {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--mint);
}

/* ---------- 版本三段位 ---------- */
.page-faq .ver-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.page-faq .ver-item {
  padding: 18px 18px 20px;
  background: var(--panel);
}
.page-faq .ver-key {
  display: block;
  margin-bottom: 9px;
  font-family: var(--f-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .02em;
}
.page-faq .ver-item:nth-child(1) .ver-key {
  color: var(--neon);
}
.page-faq .ver-item:nth-child(2) .ver-key {
  color: var(--mint);
}
.page-faq .ver-item:nth-child(3) .ver-key {
  color: var(--coral);
}
.page-faq .ver-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 快捷动作 ---------- */
.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}
.page-faq .copy-btn {
  padding: 9px 15px;
  font-family: var(--f-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--muted);
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-faq .copy-btn:hover {
  color: var(--neon);
  border-color: var(--neon);
}
.page-faq .copy-btn[data-copied] {
  color: var(--mint);
  border-color: var(--mint);
}

/* ---------- 周视图折叠演示 ---------- */
.page-faq .acc {
  margin-top: 26px;
  border-top: 1px solid var(--rule);
}
.page-faq .acc-item {
  border-bottom: 1px solid var(--rule);
}
.page-faq .acc-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 4px;
  font: inherit;
  color: inherit;
  text-align: left;
  background: none;
  border: 0;
  cursor: pointer;
  transition: color .2s var(--ease);
}
.page-faq .acc-btn:hover {
  color: var(--neon);
}
.page-faq .acc-idx {
  min-width: 76px;
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--amber);
}
.page-faq .acc-label {
  flex: 1;
  font-size: 15px;
  line-height: 1.5;
}
.page-faq .acc-mark {
  font-family: var(--f-mono);
  font-size: 16px;
  color: var(--muted);
}
.page-faq .acc-panel {
  padding: 2px 4px 18px 92px;
}
.page-faq .acc-panel p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 问答速查 ---------- */
.page-faq .qa-group {
  margin-top: 32px;
}
.page-faq .qa-group-title {
  margin: 0 0 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--f-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--amber);
}
.page-faq .qa {
  position: relative;
  border-bottom: 1px solid var(--rule);
}
.page-faq .qa::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--neon);
  opacity: 0;
  transition: opacity .2s var(--ease);
}
.page-faq .qa[open]::before {
  opacity: 1;
}
.page-faq .qa-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 12px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  transition: color .2s var(--ease);
}
.page-faq .qa-q::-webkit-details-marker {
  display: none;
}
.page-faq .qa-q:hover {
  color: var(--neon);
}
.page-faq .qa-idx {
  min-width: 34px;
  padding-top: 3px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--amber);
}
.page-faq .qa-a {
  margin: 0;
  padding: 0 12px 17px 58px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 档案脚注与路径条 ---------- */
.page-faq .appendix {
  display: grid;
  gap: 1px;
  margin-top: 48px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.page-faq .appendix-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 16px;
  background: var(--panel);
}
.page-faq .appendix-k {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--muted);
}
.page-faq .appendix-v {
  font-family: var(--f-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--neon);
}
.page-faq .path-strip {
  display: grid;
  gap: 8px;
  margin-top: 26px;
}
.page-faq .path-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 16px;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--ink);
  text-decoration: none;
  background: var(--card);
  border: 1px solid var(--rule);
  border-left: 2px solid var(--rule);
  border-radius: var(--radius);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-faq .path-item:hover {
  color: var(--neon);
  border-left-color: var(--neon);
}
.page-faq .path-arrow {
  font-family: var(--f-mono);
  color: var(--muted);
}
.page-faq .path-item:hover .path-arrow {
  color: var(--neon);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .ph-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .ver-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .appendix {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .appendix-item {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 7px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-step-body {
    padding-left: var(--faq-indent);
  }
  .page-faq .path-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 56px;
    padding-top: 48px;
  }
  .page-faq .faq-rail {
    position: sticky;
    top: var(--faq-sticky-top);
    align-self: start;
  }
  .page-faq .faq-rail-list {
    display: block;
    overflow: visible;
    padding: 0;
  }
  .page-faq .rail-node {
    border-left: 1px solid var(--rule);
  }
  .page-faq .rail-node a {
    padding: 11px 12px;
    background: none;
    border: 0;
    border-left: 2px solid transparent;
    margin-left: -1px;
    border-radius: 0;
    white-space: normal;
  }
  .page-faq .rail-node a:hover {
    background: none;
  }
  .page-faq .rail-node[data-active] a {
    background: none;
    border-left-color: var(--neon);
  }
}

@media (max-width: 559px) {
  .page-faq .ph-facts {
    border-left: 0;
    border-right: 0;
  }
  .page-faq .order-item {
    gap: 10px;
  }
  .page-faq .qa-a {
    padding-left: 12px;
  }
  .page-faq .acc-panel {
    padding-left: 4px;
  }
  .page-faq .acc-idx {
    min-width: 68px;
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .crumbs a,
  .page-faq .rail-node a,
  .page-faq .copy-btn,
  .page-faq .qa,
  .page-faq .qa-q,
  .page-faq .path-item,
  .page-faq .path-arrow,
  .page-faq .acc-btn {
    transition: none;
  }
}