.page-faq {
  --faq-cell: 96px;
  --faq-grid: rgba(23, 229, 184, .055);
  background: var(--ink-bg);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 56px) 0 64px;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(23, 229, 184, .12) 0%, transparent 58%),
    linear-gradient(180deg, rgba(5, 35, 30, 0) 40%, rgba(10, 52, 44, .85) 100%),
    var(--ink-bg);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, var(--faq-grid) 0 1px, transparent 1px var(--faq-cell)),
    repeating-linear-gradient(0deg, var(--faq-grid) 0 1px, transparent 1px var(--faq-cell));
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), rgba(0, 0, 0, .18) 76%, transparent);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), rgba(0, 0, 0, .18) 76%, transparent);
}

.page-faq .faq-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  align-items: end;
}

.page-faq .breadcrumb {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--moss);
}

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

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--tactical);
}

.page-faq .breadcrumb-sep {
  margin: 0 8px;
  color: rgba(147, 173, 166, .5);
}

.page-faq .faq-kicker {
  margin: 20px 0 0;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--tactical);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(32px, 6.2vw, 66px);
  line-height: 1.06;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-lede {
  max-width: 56ch;
  margin: 22px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(242, 246, 241, .78);
}

.page-faq .faq-hero-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 18px 24px;
  margin: 36px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.page-faq .faq-hero-facts li {
  font-size: 13px;
  line-height: 1.6;
  color: var(--moss);
}

.page-faq .faq-fact-num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 800;
  letter-spacing: -.03em;
  color: var(--tactical);
  line-height: 1.1;
  margin-bottom: 4px;
}

.page-faq .faq-hero-visual {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-panel);
}

.page-faq .faq-hero-visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-hero-visual figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--moss);
}

/* ---------- 检索式双栏 ---------- */
.page-faq .faq-console {
  padding: 56px 0 72px;
  background: var(--ink-panel);
  border-top: 1px solid var(--line);
}

.page-faq .faq-console-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.page-faq .faq-rail-title {
  margin: 10px 0 0;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0;
  color: var(--paper);
}

.page-faq .faq-index {
  margin: 24px 0 0;
}

.page-faq .faq-index ol {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 12px;
  border-left: 2px solid var(--line);
  font-size: 15px;
  line-height: 1.5;
  color: rgba(242, 246, 241, .72);
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  border-left-color: var(--tactical);
  background: rgba(23, 229, 184, .07);
  color: var(--paper);
}

.page-faq .faq-index-num {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--tactical);
}

.page-faq .faq-search {
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-search label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-faq .faq-search input {
  box-sizing: border-box;
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--carbon);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 15px;
}

.page-faq .faq-search input::placeholder {
  color: rgba(147, 173, 166, .72);
}

.page-faq .faq-search input:focus-visible {
  outline: 2px solid var(--tactical);
  outline-offset: 2px;
  border-color: var(--tactical);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-flow {
  display: grid;
  gap: 48px;
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-tactical);
}

.page-faq .faq-group-num {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .16em;
  color: var(--tactical);
}

.page-faq .faq-group-head h2 {
  grid-column: 2;
  margin: 0;
  font-size: clamp(21px, 2.6vw, 30px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--paper);
}

.page-faq .faq-group-note {
  grid-column: 2;
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--moss);
}

.page-faq .faq-list {
  margin-top: 6px;
}

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

.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 2px;
  list-style: none;
  cursor: pointer;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

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

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--tactical);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--tactical);
  outline-offset: 2px;
}

.page-faq .faq-q-text {
  flex: 1 1 auto;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.55;
  color: inherit;
}

.page-faq .faq-item summary {
  color: var(--paper);
}

.page-faq .faq-q-tag {
  flex: 0 0 auto;
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--moss);
  white-space: nowrap;
}

.page-faq .faq-q::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--moss);
  transition: color .2s var(--ease);
}

.page-faq .faq-item[open] .faq-q::after {
  content: "–";
  color: var(--tactical);
}

.page-faq .faq-item[open] .faq-q-text {
  color: var(--tactical-soft);
}

.page-faq .faq-a {
  max-width: 62ch;
  padding: 0 2px 26px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(242, 246, 241, .8);
}

.page-faq .faq-a p {
  margin: 0 0 12px;
}

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

.page-faq .faq-a a {
  color: var(--tactical);
  text-decoration: none;
  border-bottom: 1px solid rgba(23, 229, 184, .45);
}

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

/* 步骤连线 */
.page-faq .faq-steps {
  counter-reset: faqstep;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-faq .faq-steps > li {
  position: relative;
  counter-increment: faqstep;
  padding-left: 34px;
  font-size: 15.5px;
  line-height: 1.75;
}

.page-faq .faq-steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .12em;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 2px;
  background: var(--tactical);
  color: var(--carbon);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: -.02em;
}

.page-faq .faq-steps > li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 11px;
  top: 26px;
  bottom: -14px;
  width: 1px;
  background: var(--line-tactical);
}

/* 字段名内联高亮 */
.page-faq .faq-field {
  padding: 1px 6px;
  border: 1px solid rgba(23, 229, 184, .28);
  border-radius: 2px;
  background: rgba(23, 229, 184, .1);
  color: var(--tactical-soft);
  font-family: var(--mono);
  font-size: .9em;
  font-weight: 700;
}

/* 勘误章节配图 */
.page-faq .faq-side-media {
  margin: 26px 0 0;
  border: 1px solid var(--line);
  background: var(--carbon);
}

.page-faq .faq-side-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-faq .faq-side-media figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--moss);
}

/* ---------- 兜底联系 ---------- */
.page-faq .faq-assist {
  padding: 60px 0 78px;
  background: var(--carbon);
  border-top: 1px solid var(--line);
}

.page-faq .faq-assist-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  align-items: start;
}

.page-faq .faq-assist-copy h2 {
  margin: 12px 0 0;
  font-size: clamp(23px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.28;
  color: var(--paper);
}

.page-faq .faq-assist-copy p {
  max-width: 52ch;
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(242, 246, 241, .78);
}

.page-faq .faq-assist-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-assist-channels {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-assist-channels > div {
  padding: 18px 20px;
  background: var(--carbon);
}

.page-faq .faq-assist-channels dt {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-faq .faq-assist-channels dd {
  margin: 8px 0 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .faq-assist-channels a {
  color: var(--tactical);
  text-decoration: none;
  border-bottom: 1px solid rgba(23, 229, 184, .4);
  word-break: break-all;
}

.page-faq .faq-assist-channels a:hover,
.page-faq .faq-assist-channels a:focus-visible {
  color: var(--tactical-soft);
  border-bottom-color: var(--tactical-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-h) + 72px) 0 84px;
  }

  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-faq .faq-lede {
    font-size: 17px;
  }

  .page-faq .faq-console {
    padding: 72px 0 88px;
  }

  .page-faq .faq-assist {
    padding: 76px 0 96px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-console-grid {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: clamp(32px, 4.5vw, 72px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-faq .faq-flow {
    gap: 56px;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-assist-inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: clamp(32px, 5vw, 72px);
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-group--media {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 272px;
    column-gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-group--media > .faq-group-head {
    grid-column: 1;
    grid-row: 1;
  }

  .page-faq .faq-group--media > .faq-list {
    grid-column: 1;
    grid-row: 2;
  }

  .page-faq .faq-group--media > .faq-side-media {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: start;
    position: sticky;
    top: calc(var(--header-h) + 40px);
    margin-top: 6px;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-q-tag {
    display: none;
  }

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

  .page-faq .faq-a {
    font-size: 15.5px;
  }

  .page-faq .faq-hero-facts {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index a,
  .page-faq .faq-item summary,
  .page-faq .faq-q::after {
    transition: none;
  }
}