.page-faq {
  --faq-line: 1px solid var(--grid);
  --faq-gap: clamp(28px, 5vw, 56px);
  padding-bottom: clamp(56px, 9vh, 120px);
}

.page-faq .breadcrumb {
  padding-top: 20px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(32px, 6vh, 72px) 0 clamp(26px, 5vh, 48px);
  border-bottom: var(--faq-line);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 22ch;
  font-size: clamp(30px, 5.6vw, 54px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-lede {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
}

.page-faq .faq-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 30px 0 0;
  background: var(--grid);
  border: var(--faq-line);
}

.page-faq .faq-meta > div {
  padding: 14px 16px;
  background: var(--navy-800);
}

.page-faq .faq-meta dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-meta dd {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
  margin-top: clamp(30px, 6vh, 62px);
}

.page-faq .faq-index {
  align-self: start;
  min-width: 0;
}

.page-faq .faq-index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-faq .faq-index ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 4px;
  border-bottom: 2px solid transparent;
  color: var(--text);
  font-size: 14px;
  text-decoration: none;
  transition: color 160ms var(--ease-out), border-color 160ms var(--ease-out);
}

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

.page-faq .faq-index a:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .idx-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-body {
  min-width: 0;
}

/* ---------- 分类区块 ---------- */
.page-faq .faq-group {
  padding-top: clamp(36px, 6vh, 62px);
  scroll-margin-top: calc(var(--header-h) + 28px);
}

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

.page-faq .faq-group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  padding-bottom: 14px;
  border-bottom: var(--faq-line);
}

.page-faq .faq-group-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .faq-group-head h2 {
  margin: 0;
  font-size: clamp(20px, 2.8vw, 27px);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-group-lede {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border-bottom: var(--faq-line);
}

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 17px 2px;
  cursor: pointer;
  list-style: none;
  transition: background-color 160ms var(--ease-out);
}

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

.page-faq .faq-item summary:hover {
  background: var(--navy-800);
}

.page-faq .faq-item summary:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: -1px;
}

.page-faq .faq-num {
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .faq-q-text {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
}

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

.page-faq .faq-toggle {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 6px;
}

.page-faq .faq-toggle::before,
.page-faq .faq-toggle::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 180ms var(--ease-out), opacity 180ms var(--ease-out);
}

.page-faq .faq-toggle::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-toggle::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-toggle::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-a {
  padding: 0 0 22px 32px;
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 4px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-cap {
  padding: 10px 2px 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 步骤指示器 ---------- */
.page-faq .faq-steps {
  counter-reset: faqstep;
  display: grid;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  height: 22px;
  line-height: 20px;
  border: 1px solid var(--grid);
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: center;
  color: var(--cyan);
}

/* ---------- 指标对比条 ---------- */
.page-faq .faq-bars {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
  max-width: 560px;
}

.page-faq .faq-bar-row {
  display: grid;
  gap: 5px;
}

.page-faq .faq-bar-top {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
}

.page-faq .faq-bar-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-faq .faq-bar-track {
  display: block;
  height: 8px;
  background: var(--navy-700);
  border: 1px solid var(--grid);
}

.page-faq .faq-bar-fill {
  display: block;
  width: var(--v, 50%);
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
}

.page-faq .faq-bar-note {
  margin: 0;
  padding-left: 84px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--muted);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(48px, 8vh, 92px);
  padding: clamp(24px, 4vw, 40px);
  background: var(--navy-800);
  border: var(--faq-line);
  border-top: 2px solid var(--cyan);
}

.page-faq .faq-cta h2 {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-cta p {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 桌面端双栏 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-meta {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: clamp(36px, 4vw, 64px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    border-left: var(--faq-line);
    padding-left: 18px;
  }

  .page-faq .faq-index ol {
    flex-direction: column;
    gap: 0;
  }

  .page-faq .faq-index a {
    padding: 11px 6px;
    border-bottom: none;
    border-left: 2px solid transparent;
    margin-left: -20px;
    padding-left: 18px;
  }

  .page-faq .faq-index a:hover,
  .page-faq .faq-index a:focus-visible {
    border-bottom-color: transparent;
    border-left-color: var(--cyan);
    background: var(--navy-800);
  }

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

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

.page-faq {
  --v: 1rem;
}