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

.page-faq .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* —— 首屏 —— */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--navy);
  color: var(--paper);
  padding: clamp(20px, 4vw, 34px) 0 clamp(38px, 6vw, 72px);
  border-bottom: 1px solid var(--edge);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--dot) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: 0.5;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
  pointer-events: none;
}

.page-faq .faq-hero > .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: clamp(24px, 5vw, 52px);
}

.page-faq .faq-crumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
}

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

.page-faq .faq-crumb__sep {
  color: var(--edge);
}

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

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 7vw, 4.4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 14px 0 20px;
  max-width: 18ch;
}

.page-faq .faq-hero__hl {
  color: var(--mint);
}

.page-faq .faq-hero .lede--onDark {
  color: var(--muted);
  max-width: 60ch;
  font-size: clamp(0.95rem, 1.5vw, 1.06rem);
  line-height: 1.8;
}

.page-faq .faq-hero__panel {
  border: 1px solid var(--edge);
  background: rgba(14, 39, 71, 0.72);
  border-radius: var(--radius);
  padding: 20px;
}

.page-faq .faq-hero__panel-title {
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}

.page-faq .faq-stat {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
}

.page-faq .faq-stat__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 12px;
  padding: 9px 0;
  border-top: 1px solid var(--edge-soft);
  font-size: 0.82rem;
}

.page-faq .faq-stat__k {
  color: var(--muted);
}

.page-faq .faq-stat__v {
  color: var(--mint);
  font-size: 0.82rem;
}

/* —— 主题跳转条 —— */
.page-faq .faq-jump {
  background: var(--navy-soft);
  border-bottom: 1px solid var(--edge);
}

.page-faq .faq-jump__inner {
  display: flex;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-jump__inner a {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 14px clamp(14px, 2.4vw, 24px);
  font-size: 0.82rem;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  border-right: 1px solid var(--edge-soft);
  transition: color 160ms var(--ease), background 160ms var(--ease);
}

.page-faq .faq-jump__inner a .mono {
  color: var(--mint);
  font-size: 0.7rem;
}

.page-faq .faq-jump__inner a:hover,
.page-faq .faq-jump__inner a:focus-visible {
  color: var(--paper);
  background: rgba(53, 242, 192, 0.08);
}

/* —— 主体诊断区 —— */
.page-faq .faq-diag {
  padding: clamp(38px, 6vw, 84px) 0 clamp(30px, 5vw, 60px);
}

.page-faq .faq-sec-head {
  max-width: 70ch;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-faq .faq-sec-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.6rem, 3.4vw, 2.7rem);
  line-height: 1.16;
  letter-spacing: -0.015em;
  margin: 12px 0 16px;
  color: var(--navy);
}

.page-faq .faq-sec-head .lede {
  color: var(--muted-ink);
  font-size: 1rem;
  line-height: 1.78;
  max-width: 64ch;
}

.page-faq .faq-figure {
  margin: 0 0 clamp(26px, 4vw, 44px);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--edge-line);
  background: var(--navy);
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--muted-ink);
}

.page-faq .faq-figure--device img {
  background: var(--panel);
}

/* —— 索引 + 问答 —— */
.page-faq .diag-layout {
  display: grid;
  gap: clamp(24px, 4vw, 56px);
}

.page-faq .diag-index__title {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--muted-ink);
  margin: 0 0 10px 14px;
}

.page-faq .diag-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 6px;
}

.page-faq .diag-index__list li {
  flex: 0 0 auto;
}

.page-faq .diag-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  background: #fff;
  border: 1px solid var(--edge-line);
  border-radius: 999px;
  transition: border-color 160ms var(--ease), color 160ms var(--ease), background 160ms var(--ease);
}

.page-faq .diag-index__num {
  font-size: 0.7rem;
  color: var(--mint-deep);
}

.page-faq .diag-index__list a:hover,
.page-faq .diag-index__list a:focus-visible {
  border-color: var(--mint-deep);
  background: rgba(53, 242, 192, 0.1);
}

.page-faq .diag-index__note {
  margin: 12px 0 0;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--muted-ink);
}

.page-faq .diag-group {
  --accent: var(--mint-deep);
  scroll-margin-top: 20px;
  padding-bottom: clamp(26px, 4vw, 42px);
}

.page-faq .diag-group + .diag-group {
  border-top: 1px solid var(--edge-line);
  padding-top: clamp(26px, 4vw, 42px);
}

.page-faq .diag-group:last-child {
  padding-bottom: 0;
}

.page-faq .diag-group--version {
  --accent: #8a5c0a;
}

.page-faq .diag-group--contact {
  --accent: #a3341f;
}

.page-faq .diag-group h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  letter-spacing: -0.01em;
  color: var(--navy);
  margin: 0 0 10px;
}

.page-faq .diag-group__num {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent);
  border: 1px solid currentColor;
  border-radius: 999px;
  padding: 2px 9px;
  letter-spacing: 0.06em;
}

.page-faq .diag-group__intro {
  color: var(--muted-ink);
  font-size: 0.94rem;
  line-height: 1.78;
  max-width: 64ch;
  margin: 0 0 14px;
}

/* —— 问答手风琴 —— */
.page-faq .faq-item {
  border-top: 1px solid var(--edge-line);
  border-left: 2px solid transparent;
  transition: border-left-color 160ms var(--ease), background 160ms var(--ease);
}

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

.page-faq .faq-item[open] {
  border-left-color: var(--accent);
  background: rgba(255, 255, 255, 0.62);
}

.page-faq .faq-item summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  padding: 15px 38px 15px 14px;
  font-size: 0.96rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
  transition: color 140ms var(--ease);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--muted-ink);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--accent);
}

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

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

.page-faq .faq-a {
  padding: 0 16px 18px;
  max-width: 68ch;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--muted-ink);
}

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

.page-faq .faq-a p + p {
  margin-top: 10px;
}

.page-faq .faq-a a {
  color: var(--mint-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-a a:hover {
  color: var(--navy);
}

/* —— 版本标签 —— */
.page-faq .vtag {
  display: inline-block;
  font-size: 0.7rem;
  line-height: 1.6;
  padding: 1px 8px;
  border-radius: 4px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.page-faq .vtag--new {
  background: rgba(53, 242, 192, 0.16);
  border: 1px solid rgba(53, 242, 192, 0.55);
  color: var(--mint-deep);
  font-weight: 700;
}

.page-faq .vtag--old {
  background: rgba(244, 184, 74, 0.16);
  border: 1px solid rgba(244, 184, 74, 0.6);
  color: #8a5c0a;
  font-weight: 700;
}

/* —— 平板示意 —— */
.page-faq .device-demo {
  background: var(--navy);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  padding: 10px;
  margin: 0 0 18px;
}

.page-faq .device-demo svg {
  display: block;
  width: 100%;
  height: auto;
}

/* —— 联系方式格 —— */
.page-faq .contact-grid {
  display: grid;
  gap: 1px;
  background: var(--edge-line);
  border: 1px solid var(--edge-line);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 0 0 20px;
}

.page-faq .contact-cell {
  background: #fff;
  padding: 16px;
}

.page-faq .contact-cell__k {
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--muted-ink);
  margin: 0 0 6px;
}

.page-faq .contact-cell__v {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.98rem;
  line-height: 1.5;
  color: var(--navy);
  margin: 0 0 6px;
  word-break: break-word;
}

.page-faq .contact-cell__n {
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--muted-ink);
  margin: 0;
}

/* —— 结尾引导 —— */
.page-faq .faq-cta {
  background: var(--navy);
  color: var(--paper);
  border-top: 1px solid var(--edge);
  padding: clamp(34px, 5vw, 62px) 0;
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: 24px;
  align-items: center;
}

.page-faq .faq-cta h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 12px 0 12px;
}

.page-faq .faq-cta__text {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.78;
  max-width: 58ch;
  margin: 0;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* —— 响应式 —— */
@media (min-width: 700px) {
  .page-faq .contact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
  }

  .page-faq .faq-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: end;
  }

  .page-faq .faq-hero__panel {
    padding: 24px;
  }
}

@media (min-width: 1024px) {
  .page-faq .diag-layout {
    grid-template-columns: 268px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .diag-index {
    position: sticky;
    top: 24px;
  }

  .page-faq .diag-index__list {
    display: block;
    overflow: visible;
    gap: 0;
    padding-bottom: 0;
  }

  .page-faq .diag-index__list li + li {
    margin-top: 2px;
  }

  .page-faq .diag-index__list a {
    display: flex;
    width: 100%;
    border: 0;
    border-left: 2px solid var(--edge-line);
    border-radius: 0;
    background: transparent;
    padding: 11px 12px;
    font-size: 0.9rem;
  }

  .page-faq .diag-index__list a:hover,
  .page-faq .diag-index__list a:focus-visible {
    border-left-color: var(--mint-deep);
    background: rgba(53, 242, 192, 0.09);
  }

  .page-faq .diag-index__title {
    margin-left: 12px;
  }

  .page-faq .faq-item summary {
    font-size: 1rem;
    padding: 17px 40px 17px 16px;
  }

  .page-faq .faq-a {
    padding: 0 20px 20px;
    font-size: 0.95rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-jump__inner a,
  .page-faq .diag-index__list a,
  .page-faq .faq-item summary {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>