.page-home {
  --home-rail: 15rem;
  background: var(--paper);
  color: var(--body-ink);
  overflow-x: hidden;
}

.page-home img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

.page-home .eyebrow {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal-deep);
}

/* ---------- 首屏分屏 ---------- */
.page-home .home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  background: var(--ink-blue);
  color: var(--cream);
  position: relative;
}

.page-home .hero-brand {
  position: relative;
  padding: clamp(2rem, 6vw, 4rem) var(--gutter) clamp(2rem, 4vw, 3.2rem);
}

.page-home .hero-brand::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: clamp(70px, 14vw, 170px);
  height: clamp(70px, 14vw, 170px);
  background: var(--signal);
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  pointer-events: none;
}

.page-home .hero-brand > * {
  max-width: 34rem;
  position: relative;
}

.page-home .hero-brand .eyebrow {
  color: var(--amber);
}

.page-home .hero-brand h1 {
  margin: 0 0 1rem;
  font-size: var(--step-4);
  line-height: 1.04;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--cream);
}

.page-home .hero-lead {
  margin: 0 0 1.8rem;
  font-size: var(--step-1);
  line-height: 1.75;
  color: rgba(255, 249, 240, 0.84);
}

.page-home .hero-doors {
  list-style: none;
  margin: 0 0 1.8rem;
  padding: 0;
  border-top: 1px solid var(--rule);
}

.page-home .door a {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  gap: 0.15rem 0.9rem;
  padding: 0.85rem 0.5rem 0.85rem 0.2rem;
  border-bottom: 1px solid var(--rule);
  color: var(--cream);
  text-decoration: none;
  transition: background 0.2s ease, box-shadow 0.2s ease, padding-left 0.2s ease;
}

.page-home .door-num {
  grid-row: 1 / span 2;
  font-size: 0.86rem;
  color: var(--signal);
  padding-top: 0.2rem;
}

.page-home .door-label {
  font-size: var(--step-1);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-home .door-desc {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--mist);
}

.page-home .door a:hover,
.page-home .door a:focus-visible {
  background: rgba(232, 106, 51, 0.16);
  box-shadow: inset 3px 0 0 var(--signal);
  padding-left: 0.7rem;
}

.page-home .door a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.page-home .hero-scene {
  margin: 0;
  border-top: 1px solid var(--rule);
  padding-top: 1rem;
}

.page-home .hero-scene img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(0.85);
}

/* 右侧暖纸索引区 */
.page-home .hero-panel {
  position: relative;
  background: var(--paper);
  color: var(--ink);
  padding: clamp(1.8rem, 5vw, 3.2rem) var(--gutter) clamp(2.2rem, 5vw, 3.6rem);
}

.page-home .hero-panel__kicker {
  margin: 0 0 0.7rem;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--muted-ink);
}

.page-home .hero-panel h2 {
  margin: 0 0 1.1rem;
  font-size: var(--step-2);
  letter-spacing: -0.015em;
  color: var(--ink-blue);
}

.page-home .hero-layers {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
}

.page-home .hero-layers li {
  position: relative;
  padding: 0.55rem 0.4rem 0.55rem 1rem;
  border-bottom: 1px dashed var(--shadow);
  font-size: 0.95rem;
  line-height: 1.6;
}

.page-home .hero-layers li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62rem;
  bottom: 0.62rem;
  width: 3px;
  background: var(--slate);
}

.page-home .hero-layers li:nth-child(1)::before {
  background: var(--signal);
}

.page-home .hero-layers li:nth-child(2) {
  padding-left: 1.9rem;
}

.page-home .hero-layers li:nth-child(2)::before {
  left: 0.9rem;
  background: var(--mist);
}

.page-home .hero-layers li:nth-child(3) {
  padding-left: 2.8rem;
}

.page-home .hero-layers li:nth-child(3)::before {
  left: 1.8rem;
  background: var(--rule);
}

.page-home .hero-layers .mono {
  font-size: 0.76rem;
  color: var(--muted-ink);
  margin-right: 0.4rem;
}

.page-home .hero-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  margin: 0 0 1.6rem;
  padding: 0.9rem 0 0;
  border-top: 2px solid var(--ink-blue);
}

.page-home .hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
}

.page-home .stat-num {
  font-size: clamp(1.5rem, 4.4vw, 2.1rem);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--signal-deep);
}

.page-home .stat-key {
  font-size: 0.76rem;
  line-height: 1.4;
  color: var(--muted-ink);
}

.page-home .hero-figure {
  margin: 0;
}

.page-home .hero-panel .media-frame__caption {
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--muted-ink);
  padding-top: 0.5rem;
}

.page-home .hero-panel .media-frame__img img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 主体：粘性目录 + 栏式阅读 ---------- */
.page-home .home-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  padding-block: clamp(1.4rem, 3vw, 2.4rem) 0;
}

.page-home .home-rail {
  border: 1px solid var(--shadow);
  background: var(--paper-deep);
  padding: 0.9rem 1rem;
  margin-bottom: 1.4rem;
}

.page-home .section-nav__title {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--muted-ink);
}

.page-home .home-rail .section-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1.1rem;
}

.page-home .home-rail .section-nav__link {
  display: block;
  padding: 0.2rem 0;
  border-bottom: 2px solid transparent;
  font-size: 0.88rem;
  color: var(--muted-ink);
  text-decoration: none;
}

.page-home .home-rail .section-nav__link:hover,
.page-home .home-rail .section-nav__link:focus-visible {
  border-bottom-color: var(--signal);
  color: var(--ink);
}

.page-home .home-rail .section-nav__link:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-home .home-rail .section-nav__link[aria-current="true"] {
  border-bottom-color: var(--signal);
  color: var(--ink);
  font-weight: 700;
}

.page-home .home-sec {
  padding-block: clamp(1.9rem, 4vw, 3.2rem);
  border-top: 1px solid var(--shadow);
}

.page-home .home-sec:first-child {
  border-top: 0;
  padding-top: 0.4rem;
}

.page-home .home-sec h2 {
  margin: 0 0 0.8rem;
  font-size: var(--step-3);
  line-height: 1.15;
  letter-spacing: -0.018em;
  color: var(--ink-blue);
}

.page-home .sec-lead {
  margin: 0 0 1.4rem;
  max-width: 44rem;
  font-size: var(--step-0);
  line-height: 1.78;
  color: var(--body-ink);
}

.page-home .sec-more {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1.5rem;
  padding: 0.35rem 0;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink-blue);
  text-decoration: none;
  border-bottom: 2px solid var(--signal);
}

.page-home .sec-more::after {
  content: "\2192";
  color: var(--signal-deep);
  transition: transform 0.2s ease;
}

.page-home .sec-more:hover::after {
  transform: translateX(4px);
}

.page-home .sec-more:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

/* ---------- 筛选 ---------- */
.page-home .filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.9rem;
  margin: 0 0 1.5rem;
}

.page-home .filter__label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--muted-ink);
}

.page-home .filter__input {
  flex: 1 1 15rem;
  min-width: 0;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--rule);
  border-radius: 0;
  background: var(--cream);
  color: var(--ink);
  font: inherit;
  font-size: 0.95rem;
}

.page-home .filter__input:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-home .filter__empty {
  flex: 1 1 100%;
  margin: 0;
  padding: 0.6rem 0;
  font-size: 0.9rem;
  color: var(--muted-ink);
}

/* ---------- 42 条索引 ---------- */
.page-home .idx-groups {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.7rem 2.6rem;
}

.page-home .idx-group h3 {
  margin: 0 0 0.6rem;
  padding-left: 0.6rem;
  border-left: 4px solid var(--signal);
  font-size: var(--step-1);
  line-height: 1.3;
  color: var(--ink-blue);
}

.page-home .idx-count {
  display: inline-block;
  margin-left: 0.4rem;
  font-size: 0.76rem;
  font-weight: 400;
  color: var(--slate);
  letter-spacing: 0.04em;
}

.page-home .index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--shadow);
}

.page-home .index-list__item {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 0.6rem;
  padding: 0.48rem 0.3rem;
  border-bottom: 1px solid var(--shadow);
  font-size: 0.93rem;
  line-height: 1.6;
  transition: background 0.15s ease;
}

.page-home .index-list__item:hover {
  background: rgba(242, 166, 90, 0.16);
}

.page-home .index-list__num {
  font-size: 0.8rem;
  color: var(--slate);
  padding-top: 0.18rem;
}

/* ---------- 版本速查 ---------- */
.page-home .ver-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  align-items: end;
  margin-bottom: 1.2rem;
}

.page-home .ver-anchor {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.page-home .ver-anchor .mono {
  font-size: clamp(2.6rem, 10vw, 4.4rem);
  line-height: 0.9;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--signal);
}

.page-home .ver-anchor__cap {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--muted-ink);
}

.page-home .ver-rows {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--shadow);
}

.page-home .ver-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.3rem;
  padding: 0.9rem 0.6rem 0.9rem 0;
  border-bottom: 1px solid var(--shadow);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.page-home .ver-row:hover {
  background: rgba(232, 106, 51, 0.07);
  box-shadow: inset 3px 0 0 var(--signal);
}

.page-home .ver-row__code {
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--slate);
  padding-top: 0.2rem;
}

.page-home .ver-row__main h3 {
  margin: 0 0 0.15rem;
  font-size: var(--step-1);
  line-height: 1.3;
  color: var(--ink-blue);
}

.page-home .ver-row__main p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted-ink);
}

.page-home .ver-row__change {
  margin: 0;
  font-size: 0.91rem;
  line-height: 1.7;
  color: var(--body-ink);
  opacity: 0.72;
  transition: opacity 0.2s ease;
}

.page-home .ver-row:hover .ver-row__change {
  opacity: 1;
}

.page-home .ver-history {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.page-home .ver-history li {
  display: grid;
  grid-template-columns: 3.6rem minmax(0, 1fr);
  gap: 0.8rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px dotted var(--shadow);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--body-ink);
}

.page-home .ver-history .mono {
  color: var(--signal-deep);
  font-weight: 700;
}

.page-home .ver-figure,
.page-home .nav-figure {
  margin: 1.6rem 0 0;
}

.page-home .media-frame__img img {
  width: 100%;
  object-fit: cover;
}

.page-home .ver-figure .media-frame__img img {
  aspect-ratio: 10 / 7;
}

.page-home .nav-figure .media-frame__img img {
  aspect-ratio: 8 / 5;
}

.page-home .media-frame__caption {
  padding-top: 0.55rem;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--muted-ink);
}

/* ---------- 导航层级 ---------- */
.page-home .depth-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.4rem;
}

.page-home .depth-col h3 {
  margin: 0 0 0.6rem;
  font-size: 0.86rem;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  color: var(--muted-ink);
}

.page-home .depth-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--shadow);
}

.page-home .depth-list li {
  position: relative;
  padding: 0.5rem 0.4rem 0.5rem 1rem;
  border-bottom: 1px dashed var(--shadow);
  font-size: 0.93rem;
  line-height: 1.6;
}

.page-home .depth-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6rem;
  bottom: 0.6rem;
  width: 4px;
  background: var(--signal);
}

.page-home .depth-col--next .depth-list {
  padding-left: 1.1rem;
}

.page-home .depth-col--next .depth-list li::before {
  background: var(--slate);
}

/* ---------- 收藏页与旧入口 ---------- */
.page-home .saved-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.8rem;
}

.page-home .saved-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--shadow);
}

.page-home .saved-list li {
  display: grid;
  grid-template-columns: 1.8rem minmax(0, 1fr);
  gap: 0.7rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--shadow);
}

.page-home .saved-list .mono {
  font-size: 0.8rem;
  color: var(--signal-deep);
  padding-top: 0.15rem;
}

.page-home .saved-list strong {
  display: block;
  font-size: 0.98rem;
  color: var(--ink-blue);
  margin-bottom: 0.15rem;
}

.page-home .saved-list p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--muted-ink);
}

.page-home .legacy h3 {
  margin: 0 0 0.4rem;
  font-size: var(--step-1);
  color: var(--ink-blue);
}

.page-home .legacy-note {
  margin: 0 0 0.9rem;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--muted-ink);
}

.page-home .legacy-wrap {
  overflow-x: auto;
  border-top: 2px solid var(--ink-blue);
}

.page-home .legacy-table {
  width: 100%;
  min-width: 27rem;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.page-home .legacy-table caption {
  text-align: left;
  padding: 0.55rem 0;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--slate);
}

.page-home .legacy-table th,
.page-home .legacy-table td {
  text-align: left;
  padding: 0.55rem 0.7rem 0.55rem 0;
  border-bottom: 1px solid var(--shadow);
  vertical-align: top;
  line-height: 1.55;
}

.page-home .legacy-table thead th {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--muted-ink);
  border-bottom: 1px solid var(--rule);
}

.page-home .legacy-table td:first-child {
  color: var(--ink-blue);
  font-weight: 600;
}

/* ---------- 四条产品线 ---------- */
.page-home .line-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--shadow);
  border: 1px solid var(--shadow);
}

.page-home .line {
  background: var(--cream);
  padding: 1.1rem 1.15rem 1.3rem;
}

.page-home .line__num {
  margin: 0 0 0.5rem;
  font-size: 1.9rem;
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--signal);
}

.page-home .line h3 {
  margin: 0 0 0.6rem;
  font-size: var(--step-1);
  color: var(--ink-blue);
}

.page-home .line ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .line li {
  position: relative;
  padding: 0.34rem 0 0.34rem 1rem;
  font-size: 0.9rem;
  line-height: 1.6;
  border-bottom: 1px solid var(--paper-deep);
  color: var(--body-ink);
}

.page-home .line li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78rem;
  width: 0.42rem;
  height: 1px;
  background: var(--slate);
}

/* ---------- 更新摘要 ---------- */
.page-home .update-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .update-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.25rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--shadow);
}

.page-home .update-list li:last-child {
  border-bottom: 1px solid var(--shadow);
}

.page-home .update-when {
  font-size: 0.78rem;
  letter-spacing: 0.07em;
  color: var(--signal-deep);
  padding-top: 0.15rem;
}

.page-home .update-list h3 {
  margin: 0 0 0.2rem;
  font-size: var(--step-1);
  line-height: 1.35;
  color: var(--ink-blue);
}

.page-home .update-list p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.68;
  color: var(--muted-ink);
}

.page-home .next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.6rem;
  margin-top: 1.6rem;
}

.page-home .next-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink-blue);
  text-decoration: none;
  border-bottom: 2px solid var(--signal);
}

.page-home .next-link:hover {
  color: var(--signal-deep);
}

.page-home .next-link:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

/* ---------- 页脚上方天际线 ---------- */
.page-home .home-horizon {
  margin-top: clamp(1.6rem, 4vw, 3rem);
  background: var(--ink-blue-deep);
  line-height: 0;
}

.page-home .home-horizon svg {
  display: block;
  width: 100%;
  height: clamp(80px, 13vw, 150px);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-home .idx-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .ver-head {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 2rem;
  }

  .page-home .ver-anchor {
    align-items: flex-end;
    text-align: right;
  }

  .page-home .ver-row {
    grid-template-columns: 3.2rem minmax(0, 1fr) minmax(0, 1.1fr);
    gap: 1.1rem;
    align-items: start;
    padding: 1rem 0.8rem 1rem 0;
  }

  .page-home .depth-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2.4rem;
  }

  .page-home .line-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .update-list li {
    grid-template-columns: 6.2rem minmax(0, 1fr);
    gap: 1.3rem;
  }
}

@media (min-width: 900px) {
  .page-home .home-hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.06fr);
  }

  .page-home .hero-panel {
    clip-path: polygon(5% 0, 100% 0, 100% 100%, 0 100%);
    padding-left: calc(var(--gutter) + 2.2rem);
  }

  .page-home .hero-panel::before {
    content: "";
    position: absolute;
    left: 1.6%;
    top: 0;
    bottom: 0;
    width: 8px;
    background: var(--signal);
    transform: skewX(-5deg);
    transform-origin: top center;
  }

  .page-home .hero-panel > * {
    max-width: 32rem;
  }

  .page-home .home-body {
    grid-template-columns: var(--home-rail) minmax(0, 1fr);
    gap: clamp(1.6rem, 4vw, 3.4rem);
    align-items: start;
  }

  .page-home .home-rail {
    position: sticky;
    top: clamp(1rem, 4vh, 2rem);
    margin-bottom: 0;
    background: transparent;
    border: 0;
    border-right: 1px solid var(--shadow);
    padding: 0 1.1rem 0 0;
  }

  .page-home .home-rail .section-nav__list {
    display: block;
  }

  .page-home .home-rail .section-nav__link {
    padding: 0.45rem 0 0.45rem 0.85rem;
    border-bottom: 0;
    border-left: 2px solid var(--shadow);
  }

  .page-home .home-rail .section-nav__link:hover,
  .page-home .home-rail .section-nav__link:focus-visible {
    border-left-color: var(--signal);
    border-bottom-color: transparent;
  }

  .page-home .home-rail .section-nav__link[aria-current="true"] {
    border-left-color: var(--signal);
    border-bottom-color: transparent;
    background: rgba(232, 106, 51, 0.08);
  }

  .page-home .saved-grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.18fr);
    gap: 2.6rem;
  }
}
<<<END>>>