.page-faq {
  background: var(--ink);
  color: var(--cream);
  padding-bottom: 24px;
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding-top: 8px;
  font-size: 13px;
  color: var(--stone);
  font-family: var(--font-mono);
}

.page-faq .breadcrumb a {
  color: var(--stone);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 28px 0 44px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(155, 229, 100, 0.1), transparent 62%),
    linear-gradient(180deg, #0e231b 0%, #07130f 100%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 32px;
  align-items: end;
}

.page-faq h1 {
  margin: 12px 0 18px;
  font-family: var(--font-sans);
  font-size: clamp(30px, 5.4vw, 56px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--clay);
  margin: 0;
}

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

.page-faq .status-strip {
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-faq .status-strip__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .status-strip dt {
  font-size: 13px;
  color: var(--stone);
  letter-spacing: 0.02em;
}

.page-faq .status-strip dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .status-strip .data-figure {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--lime);
  letter-spacing: -0.01em;
}

.page-faq .data-figure__unit {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--clay);
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout {
  position: relative;
  display: grid;
  gap: 24px;
  align-items: start;
  padding: 36px 0 64px;
}

.page-faq .faq-layout > input[type="radio"] {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .faq-side {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.page-faq .faq-side__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-faq .filter-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
}

.page-faq .filter-chip {
  flex: 0 0 auto;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(14, 35, 27, 0.7);
  color: var(--stone);
  font-size: 13px;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: var(--ease);
}

.page-faq .filter-chip:hover {
  border-color: var(--clay);
  color: var(--cream);
}

.page-faq .faq-layout:has(#faq-filter-all:checked) .filter-chip[for="faq-filter-all"],
.page-faq .faq-layout:has(#faq-filter-install:checked) .filter-chip[for="faq-filter-install"],
.page-faq .faq-layout:has(#faq-filter-entry:checked) .filter-chip[for="faq-filter-entry"],
.page-faq .faq-layout:has(#faq-filter-version:checked) .filter-chip[for="faq-filter-version"],
.page-faq .faq-layout:has(#faq-filter-data:checked) .filter-chip[for="faq-filter-data"],
.page-faq .faq-layout:has(#faq-filter-device:checked) .filter-chip[for="faq-filter-device"] {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
  font-weight: 700;
}

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

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

.page-faq .toc-list a {
  display: block;
  padding: 9px 0 9px 16px;
  position: relative;
  color: var(--stone);
  font-size: 13.5px;
  text-decoration: none;
  border-left: 1px solid var(--line);
  transition: color var(--ease);
}

.page-faq .toc-list a:hover,
.page-faq .toc-list a:focus-visible {
  color: var(--cream);
}

.page-faq .toc-list a[aria-current="true"] {
  color: var(--lime);
}

.page-faq .toc-list a[aria-current="true"]::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--lime);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  display: flex;
  flex-direction: column;
  gap: 52px;
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 100px;
  min-width: 0;
}

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

.page-faq .faq-group h2 {
  margin: 10px 0 12px;
  font-family: var(--font-sans);
  font-size: clamp(23px, 3.6vw, 34px);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-faq .faq-group__intro {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--stone);
}

/* 检查清单 */
.page-faq .checklist {
  list-style: none;
  margin: 0 0 30px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .checklist li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  padding: 18px 16px;
  background: var(--panel);
}

.page-faq .checklist__box {
  width: 18px;
  height: 18px;
  margin-top: 4px;
  border: 1px solid var(--lime);
  position: relative;
}

.page-faq .checklist__box::after {
  content: "";
  position: absolute;
  inset: 4px;
  background: var(--lime);
  opacity: 0.55;
}

.page-faq .checklist__num {
  display: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--clay);
  letter-spacing: 0.06em;
  margin-top: 5px;
}

.page-faq .checklist h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 800;
  color: var(--cream);
  letter-spacing: 0.01em;
}

.page-faq .checklist p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}

/* 手风琴 */
.page-faq .faq-items {
  border-top: 1px solid var(--line);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  border-left: 2px solid transparent;
  transition: border-color var(--ease), background var(--ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--lime);
  background: linear-gradient(90deg, rgba(155, 229, 100, 0.07), transparent 62%);
}

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: start;
  padding: 17px 6px 17px 14px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--clay);
  letter-spacing: 0.06em;
  padding-top: 4px;
  transition: color var(--ease);
}

.page-faq .faq-item[open] .faq-num {
  color: var(--lime);
}

.page-faq .faq-q {
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--cream);
}

.page-faq .faq-mark {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 3px;
}

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

.page-faq .faq-mark::before {
  width: 12px;
  height: 1.5px;
}

.page-faq .faq-mark::after {
  width: 1.5px;
  height: 12px;
}

.page-faq .faq-item[open] .faq-mark::before,
.page-faq .faq-item[open] .faq-mark::after {
  background: var(--lime);
}

.page-faq .faq-item[open] .faq-mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-a {
  padding: 0 8px 20px 44px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--stone);
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 40em;
}

.page-faq .faq-a a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(155, 229, 100, 0.4);
}

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

/* ---------- 两步入口 ---------- */
.page-faq .step-map {
  display: block;
  width: 100%;
  height: auto;
  margin: 0 0 26px;
  padding: 14px 10px 6px;
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-faq .entry-panel {
  display: grid;
  gap: 26px;
  align-items: start;
}

.page-faq .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
  counter-reset: step;
}

.page-faq .step-list li {
  position: relative;
  padding-left: 44px;
}

.page-faq .step-list li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  background: var(--signal);
  color: var(--ink);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.page-faq .step-list h3 {
  margin: 2px 0 6px;
  font-size: 15.5px;
  font-weight: 800;
  color: var(--cream);
}

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

.page-faq .entry-figure {
  margin: 0;
}

.page-faq .entry-figure img,
.page-faq .data-figure-img img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .entry-figure img {
  aspect-ratio: 3 / 4;
  object-position: center;
}

.page-faq .entry-note {
  margin: 22px 0 26px;
  padding: 12px 14px;
  border-left: 2px solid var(--signal);
  background: rgba(255, 122, 26, 0.07);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--cream);
}

/* ---------- 版本对照 ---------- */
.page-faq .version-cards {
  display: grid;
  gap: 14px;
  margin: 0 0 30px;
}

.page-faq .version-card {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 20px 18px;
}

.page-faq .version-card--screen {
  border-color: var(--signal);
}

.page-faq .version-card__tag {
  display: inline-block;
  margin: 0 0 12px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(155, 229, 100, 0.14);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.page-faq .version-card__tag--signal {
  background: rgba(255, 122, 26, 0.16);
  color: var(--signal);
}

.page-faq .version-card h3 {
  margin: 0 0 12px;
  font-size: 17px;
  font-weight: 800;
  color: var(--cream);
  letter-spacing: -0.01em;
}

.page-faq .version-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .version-card li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--stone);
}

.page-faq .version-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 1px;
  background: var(--clay);
}

.page-faq .version-link {
  margin: 26px 0 0;
}

/* ---------- 数据回看与导出 ---------- */
.page-faq .data-figure-img {
  margin: 0 0 26px;
}

.page-faq .data-figure-img img {
  aspect-ratio: 3 / 2;
}

/* ---------- 人工支持 ---------- */
.page-faq .help-panel {
  border: 1px solid var(--line);
  background: linear-gradient(135deg, #0e231b 0%, #07130f 72%);
  padding: 26px 18px;
}

.page-faq .help-panel__grid {
  display: grid;
  gap: 28px;
}

.page-faq .help-panel h2 {
  margin: 10px 0 12px;
  font-size: clamp(23px, 3.4vw, 32px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-faq .help-panel__lede {
  margin: 0 0 16px;
  max-width: 32em;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--stone);
}

.page-faq .prep-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .prep-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--cream);
}

.page-faq .prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border: 1px solid var(--lime);
}

.page-faq .help-contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-faq .help-contact li {
  display: grid;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-faq .help-contact span:first-child {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--clay);
}

.page-faq .help-contact strong {
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--cream);
  word-break: break-word;
}

.page-faq .help-panel__note {
  margin: 22px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--stone);
}

.page-faq .help-panel__note a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(155, 229, 100, 0.4);
}

.page-faq .help-panel__note a:hover,
.page-faq .help-panel__note a:focus-visible {
  border-bottom-color: var(--lime);
}

/* ---------- 筛选生效 ---------- */
.page-faq #faq-filter-install:checked ~ .faq-body .faq-group:not([data-cat="install"]):not([data-cat="all"]),
.page-faq #faq-filter-entry:checked ~ .faq-body .faq-group:not([data-cat="entry"]):not([data-cat="all"]),
.page-faq #faq-filter-version:checked ~ .faq-body .faq-group:not([data-cat="version"]):not([data-cat="all"]),
.page-faq #faq-filter-data:checked ~ .faq-body .faq-group:not([data-cat="data"]):not([data-cat="all"]),
.page-faq #faq-filter-device:checked ~ .faq-body .faq-group:not([data-cat="device"]):not([data-cat="all"]) {
  display: none;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 40px 0 56px;
  }

  .page-faq .checklist li {
    grid-template-columns: auto auto 1fr;
    gap: 14px;
    padding: 20px 20px;
  }

  .page-faq .checklist__num {
    display: block;
  }

  .page-faq .entry-panel {
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 32px;
  }

  .page-faq .version-cards {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .help-panel {
    padding: 34px 30px;
  }

  .page-faq .faq-q {
    font-size: 16.5px;
  }

  .page-faq .faq-item summary {
    padding: 19px 8px 19px 18px;
    gap: 16px;
  }

  .page-faq .faq-a {
    padding: 0 8px 24px 52px;
    font-size: 15px;
  }
}

@media (min-width: 860px) {
  .page-faq .help-panel__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 48px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 64px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 264px minmax(0, 1fr);
    gap: 72px;
    padding: 56px 0 90px;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 96px;
    gap: 26px;
  }

  .page-faq .filter-tabs {
    flex-wrap: wrap;
    overflow-x: visible;
  }

  .page-faq .faq-side__toc {
    display: block;
  }

  .page-faq .faq-body {
    gap: 76px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .filter-chip,
  .page-faq .faq-item,
  .page-faq .faq-num,
  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after,
  .page-faq .breadcrumb a,
  .page-faq .toc-list a {
    transition: none;
  }
}
</