.page-faq {
  background: var(--ink);
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: calc(var(--hdr-h) + 40px) 0 44px;
  background:
    radial-gradient(110% 88% at 86% 4%, rgba(79, 240, 208, .10) 0%, rgba(79, 240, 208, 0) 60%),
    linear-gradient(180deg, var(--pitch) 0%, var(--ink) 84%);
  border-bottom: 1px solid var(--hair);
}

.page-faq .breadcrumbs {
  font-size: 12px;
  margin-bottom: 26px;
  color: var(--warm);
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-hero-lead h1 {
  margin: 12px 0 0;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.1;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--white);
}

.page-faq .faq-lede {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-faq .faq-hero-side {
  border-top: 1px solid var(--hair-strong);
  padding-top: 3px;
}

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

.page-faq .hero-links li + li {
  border-top: 1px solid var(--hair);
}

.page-faq .hero-links a {
  display: grid;
  grid-template-columns: 34px 1fr;
  grid-template-rows: auto auto;
  column-gap: 10px;
  padding: 13px 2px;
  text-decoration: none;
  color: var(--text);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .hero-links a:hover,
.page-faq .hero-links a:focus-visible {
  color: var(--cyan);
  transform: translateX(2px);
}

.page-faq .hero-idx {
  grid-row: 1 / span 2;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--teal);
  padding-top: 3px;
}

.page-faq .hero-label {
  font-size: 16px;
  font-weight: 600;
  color: inherit;
}

.page-faq .hero-note {
  grid-column: 2;
  font-size: 12px;
  color: var(--warm);
  letter-spacing: .04em;
}

/* ---------- 页内跳转条 ---------- */
.page-faq .faq-jump {
  position: sticky;
  top: var(--hdr-h);
  z-index: 20;
  background: rgba(15, 42, 34, .94);
  border-bottom: 1px solid var(--hair);
}

.page-faq .faq-jump .jump-nav {
  display: flex;
  gap: 2px;
  overflow-x: auto;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  scrollbar-width: thin;
}

.page-faq .faq-jump .jump-nav a {
  flex: none;
  padding: 12px 12px 10px;
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--warm);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

/* ---------- 通用节标题 ---------- */
.page-faq .section-head {
  max-width: 62em;
  margin-bottom: 28px;
}

.page-faq .section-head h2,
.page-faq .support-main h2 {
  margin: 10px 0 0;
  font-size: clamp(23px, 3.6vw, 34px);
  line-height: 1.22;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--white);
}

.page-faq .lede {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
}

.page-faq .link-inline {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 240, 208, .4);
  transition: border-color var(--dur) var(--ease);
}

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

.page-faq .mono.inline-code {
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: .04em;
}

/* ---------- 图形容器 ---------- */
.page-faq .faq-figure {
  margin: 0 0 26px;
  border: 1px solid var(--hair);
  border-radius: 2px;
  overflow: hidden;
  background: var(--pitch);
}

.page-faq .faq-figure--tight {
  margin-bottom: 0;
}

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

.page-faq .figure-cap {
  margin: 10px 2px 0;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .03em;
  color: var(--warm);
}

/* ---------- 年龄组矩阵 ---------- */
.page-faq .matrix-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .age-axis {
  display: none;
  margin: 0;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--warm);
}

.page-faq .age-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(142px, 1fr));
  gap: 10px;
}

.page-faq .age-card {
  display: grid;
  grid-template-rows: auto auto auto auto;
  gap: 4px;
  min-height: 128px;
  padding: 14px 14px 16px;
  border: 1px solid var(--hair-strong);
  border-radius: 2px;
  background: rgba(140, 138, 128, .10);
  color: inherit;
  text-decoration: none;
  transition:
    transform var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-faq .age-card:hover,
.page-faq .age-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--cyan);
  background: rgba(79, 240, 208, .07);
}

.page-faq .age-code {
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-faq .age-name {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.1;
  color: var(--white);
}

.page-faq .age-tier {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--amber);
}

.page-faq .age-format {
  font-size: 13px;
  line-height: 1.5;
  color: var(--warm);
  align-self: end;
}

.page-faq .matrix-foot {
  margin: 24px 0 0;
  max-width: 58em;
  font-size: 14px;
  line-height: 1.78;
  color: var(--warm);
  border-left: 2px solid var(--teal);
  padding-left: 14px;
}

/* ---------- 编号读取 ---------- */
.page-faq .number-grid {
  display: grid;
  gap: 30px;
}

.page-faq .code-parts {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--hair-strong);
}

.page-faq .code-parts li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--hair);
}

.page-faq .code-key {
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-faq .code-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .number-notes {
  margin-top: 22px;
}

.page-faq .number-notes p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
}

.page-faq .number-back {
  margin: 22px 0 0;
  font-size: 14px;
}

/* ---------- 问答目录树 ---------- */
.page-faq .qa-columns {
  display: grid;
  gap: 34px;
}

.page-faq .qa-group {
  position: relative;
  padding-left: 18px;
  border-left: 1px solid var(--hair-strong);
}

.page-faq .qa-group-title {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--white);
}

.page-faq .qa-mark {
  display: inline-block;
  min-width: 20px;
  margin-right: 8px;
  font-size: 12px;
  color: var(--teal);
}

.page-faq .qa-group .qa {
  position: relative;
}

.page-faq .qa-group .qa::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 22px;
  width: 11px;
  height: 1px;
  background: var(--hair-strong);
}

.page-faq .qa[open] > summary {
  color: var(--cyan);
}

.page-faq .qa-body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
  max-width: 62ch;
}

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

/* ---------- 内容支持 ---------- */
.page-faq .support-panel {
  display: grid;
  gap: 28px;
  padding: 28px 22px;
  border: 1px solid var(--hair-strong);
  border-radius: 2px;
  background:
    linear-gradient(140deg, rgba(23, 53, 43, .95) 0%, rgba(14, 21, 18, .95) 100%);
}

.page-faq .support-main p {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
  max-width: 54em;
}

.page-faq .support-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
}

.page-faq .support-cta {
  margin: 22px 0 0;
}

.page-faq .support-rows {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--hair);
}

.page-faq .support-rows li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--hair);
}

.page-faq .support-key {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--warm);
  padding-top: 2px;
}

.page-faq .support-val {
  font-size: 14px;
  line-height: 1.65;
  color: var(--white);
  word-break: break-word;
}

.page-faq .support-note {
  margin: 16px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--warm);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .code-parts li {
    grid-template-columns: 116px 1fr;
    gap: 18px;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding: calc(var(--hdr-h) + 56px) 0 56px;
  }

  .page-faq .matrix-wrap {
    grid-template-columns: 22px minmax(0, 1fr);
    gap: 16px;
    align-items: stretch;
  }

  .page-faq .age-axis {
    display: block;
  }

  .page-faq .support-panel {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--gutter);
    padding: 36px 30px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--gutter);
    align-items: end;
  }

  .page-faq .number-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--gutter);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-faq .qa-columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px var(--gutter);
    align-items: start;
  }

  .page-faq .qa-group--wide {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .age-card,
  .page-faq .hero-links a {
    transition: opacity var(--dur) var(--ease);
  }

  .page-faq .age-card:hover,
  .page-faq .age-card:focus-visible,
  .page-faq .hero-links a:hover,
  .page-faq .hero-links a:focus-visible {
    transform: none;
  }
}
<<<END>>>