.page-faq {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq .faq-shell {
  width: min(1160px, 100% - clamp(1.5rem, 6vw, 5rem));
  margin-inline: auto;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-top: clamp(1.1rem, 3vw, 1.9rem);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
}

.page-faq .faq-crumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-crumb a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line-ink);
  padding-bottom: 1px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-crumb a:hover {
  color: var(--rust);
  border-color: var(--rust);
}

.page-faq .faq-crumb li + li::before {
  content: "／";
  color: var(--brick);
  margin-right: 0.35rem;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-bottom: clamp(1.75rem, 4vw, 2.5rem);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  align-items: start;
  padding-block: clamp(1.5rem, 4vw, 2.75rem) clamp(1.5rem, 3vw, 2.25rem);
}

.page-faq .faq-kicker {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--rust);
}

.page-faq .faq-kicker::before {
  content: "";
  width: 2.4rem;
  height: 2px;
  background: var(--rust);
  flex: none;
}

.page-faq .faq-kicker--night {
  color: var(--signal);
}

.page-faq .faq-kicker--night::before {
  background: var(--signal);
}

.page-faq .faq-hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5.6vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-lede {
  margin: 0 0 1.5rem;
  max-width: 34em;
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  color: var(--ink-soft);
}

.page-faq .faq-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---------- 版本状态卡 ---------- */
.page-faq .faq-status {
  border: 1px solid var(--line-ink);
  border-radius: var(--radius-md);
  background: linear-gradient(170deg, var(--paper-tint), var(--paper) 78%);
  padding: clamp(1rem, 2.4vw, 1.4rem);
}

.page-faq .faq-status__head {
  margin: 0 0 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--ink-soft);
  text-transform: uppercase;
}

.page-faq .faq-status__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  padding: 0.75rem 0;
  border-top: 1px solid var(--line-ink);
}

.page-faq .faq-status__ver {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--ink);
}

.page-faq .faq-status__note {
  margin-left: auto;
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

.page-faq .faq-status__foot {
  margin: 0.5rem 0 0;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line-ink);
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.page-faq .faq-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--brick);
  flex: none;
}

.page-faq .faq-dot--live {
  background: var(--signal);
  box-shadow: 0 0 0 4px rgba(110, 231, 168, 0.24);
}

.page-faq .faq-dot--quiet {
  background: var(--rust-soft);
  box-shadow: 0 0 0 4px rgba(217, 167, 158, 0.22);
}

/* ---------- 首图 ---------- */
.page-faq .faq-banner {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line-ink);
  background: var(--pitch);
}

.page-faq .faq-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 460;
  object-fit: cover;
}

.page-faq .faq-banner figcaption {
  position: absolute;
  left: 0.9rem;
  bottom: 0.9rem;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--line-night);
  border-radius: var(--radius-pill);
  background: rgba(7, 25, 15, 0.72);
  color: var(--night);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-band {
  padding-block: clamp(2.4rem, 6vw, 4.25rem);
}

.page-faq .faq-band--tint {
  background: var(--paper-tint);
}

.page-faq .faq-band--pit {
  background: var(--pitch);
  color: var(--night);
}

.page-faq .faq-head {
  display: grid;
  gap: 0.8rem;
  margin-bottom: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-faq .faq-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 3.4vw, 2.4rem);
  line-height: 1.14;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.page-faq .faq-head p {
  margin: 0;
  max-width: 36em;
  font-size: 0.94rem;
  color: var(--ink-soft);
}

.page-faq .faq-band--pit .faq-head h2 {
  color: var(--night);
}

.page-faq .faq-band--pit .faq-head p {
  color: rgba(251, 243, 223, 0.78);
}

.page-faq .faq-band--pit a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(110, 231, 168, 0.5);
}

.page-faq a:focus-visible,
.page-faq button:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--stand);
  outline-offset: 3px;
}

/* ---------- 版本切换 ---------- */
.page-faq .faq-tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--line-ink);
}

.page-faq .faq-tab {
  appearance: none;
  border: 1px solid var(--line-ink);
  border-radius: var(--radius-pill);
  background: transparent;
  padding: 0.5rem 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-tab:hover {
  border-color: var(--stand);
  color: var(--ink);
}

.page-faq .faq-tab[aria-selected="true"] {
  background: var(--pitch);
  border-color: var(--pitch);
  color: var(--night);
}

.page-faq .faq-panel {
  margin-top: 1.25rem;
}

.page-faq .faq-panel[hidden] {
  display: none;
}

.page-faq .faq-facts {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-facts__row {
  display: grid;
  gap: 0.25rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line-ink);
}

.page-faq .faq-facts__row:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-facts dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--rust);
}

.page-faq .faq-facts dd {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
  max-width: 46em;
}

/* ---------- 三项对照 ---------- */
.page-faq .faq-compare {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  align-items: start;
}

.page-faq .faq-compare__fig {
  position: relative;
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line-ink);
  background: var(--turf);
}

.page-faq .faq-compare__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 620;
  object-fit: cover;
}

.page-faq .faq-compare__fig figcaption {
  position: absolute;
  left: 0.75rem;
  bottom: 0.75rem;
  padding: 0.24rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-night);
  background: rgba(7, 25, 15, 0.7);
  color: var(--night);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
}

.page-faq .faq-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line-ink);
  border-radius: var(--radius-md);
  background: var(--paper);
}

.page-faq .faq-matrix {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.page-faq .faq-matrix__caption {
  padding: 0.9rem 1rem 0.4rem;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
}

.page-faq .faq-matrix th,
.page-faq .faq-matrix td {
  padding: 0.95rem 1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-ink);
}

.page-faq .faq-matrix thead th {
  background: var(--paper-tint);
  border-bottom: 1px solid var(--rust-soft);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  font-weight: 600;
  color: var(--ink-soft);
}

.page-faq .faq-matrix tbody th {
  width: 22%;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-faq .faq-matrix td {
  color: var(--ink-soft);
}

.page-faq .faq-matrix td strong {
  color: var(--ink);
  font-weight: 600;
}

.page-faq .faq-matrix tbody tr:last-child th,
.page-faq .faq-matrix tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 四步排查 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  gap: 0.9rem;
  padding: clamp(1rem, 2.4vw, 1.4rem) 0;
  border-top: 1px solid var(--line-night);
}

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

.page-faq .faq-step__no {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 600;
  line-height: 1.1;
  color: var(--signal);
}

.page-faq .faq-step h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--night);
}

.page-faq .faq-step p {
  margin: 0;
  max-width: 34em;
  font-size: 0.9rem;
  color: rgba(251, 243, 223, 0.76);
}

.page-faq .faq-steps__foot {
  margin: 1.25rem 0 0;
  font-size: 0.84rem;
  color: rgba(251, 243, 223, 0.72);
}

/* ---------- 常见问题手风琴 ---------- */
.page-faq .faq-list {
  margin: 0;
}

.page-faq .faq-item {
  border-top: 1px solid var(--rust-soft);
}

.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--rust-soft);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.05rem 0.15rem;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  transition: color 0.2s var(--ease);
}

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

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

.page-faq .faq-item summary::after {
  content: "＋";
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--rust);
  line-height: 1.5;
}

.page-faq .faq-item[open] summary::after {
  content: "－";
}

.page-faq .faq-item__body {
  padding: 0 0.15rem 1.2rem;
  max-width: 46em;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.page-faq .faq-item__body p {
  margin: 0;
}

.page-faq .faq-item__body a,
.page-faq .faq-note a {
  color: var(--stand);
  text-decoration: none;
  border-bottom: 1px solid var(--rust-soft);
}

.page-faq .faq-item__body a:hover,
.page-faq .faq-note a:hover {
  border-color: var(--stand);
}

.page-faq .faq-note {
  margin: 1.5rem 0 0;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.75rem);
  padding: clamp(1.6rem, 4.5vw, 3rem);
  border-radius: var(--radius-lg);
  background: radial-gradient(120% 140% at 12% 0%, var(--turf) 0%, var(--pitch) 58%);
  color: var(--night);
}

.page-faq .faq-contact h2 {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.2vw, 2.2rem);
  line-height: 1.14;
  color: var(--night);
}

.page-faq .faq-contact__lead p {
  margin: 0 0 0.8rem;
  max-width: 32em;
  font-size: 0.92rem;
  color: rgba(251, 243, 223, 0.8);
}

.page-faq .faq-contact__more {
  margin: 0 !important;
}

.page-faq .faq-contact__more a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(110, 231, 168, 0.5);
  font-size: 0.88rem;
}

.page-faq .faq-contact__list {
  margin: 0;
  display: grid;
  gap: 0.9rem;
  align-content: start;
}

.page-faq .faq-contact__list > div {
  padding-top: 0.75rem;
  border-top: 1px solid var(--line-night);
}

.page-faq .faq-contact__list > div:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-contact__list dt {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--signal);
}

.page-faq .faq-contact__list dd {
  margin: 0.2rem 0 0;
  font-size: 0.95rem;
  color: var(--night);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-head {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 2rem;
    align-items: end;
  }

  .page-faq .faq-facts__row {
    grid-template-columns: 9rem minmax(0, 1fr);
    gap: 1rem;
    align-items: baseline;
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(2rem, 5vw, 3.5rem);
    align-items: end;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-compare {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(1.5rem, 3vw, 2.25rem);
  }

  .page-faq .faq-step {
    grid-template-columns: 4rem minmax(0, 1fr) minmax(0, 2fr);
    gap: 1.5rem;
  }

  .page-faq .faq-step > div {
    grid-column: 2 / -1;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
    gap: 1.5rem;
    align-items: baseline;
  }

  .page-faq .faq-step h3 {
    margin-bottom: 0;
  }
}

@media (max-width: 420px) {
  .page-faq .faq-status__note {
    margin-left: 0;
    width: 100%;
    text-align: left;
  }

  .page-faq .faq-hero__acts .btn {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}