.page-home {
  --home-line: var(--ink-700);
  --home-panel: var(--ink-800);
  display: block;
}

/* ---------- 顶部上下文 ---------- */
.page-home .home-top {
  padding-top: clamp(14px, 3vw, 26px);
  padding-bottom: clamp(12px, 2vw, 20px);
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  padding-bottom: clamp(36px, 6vw, 76px);
  border-bottom: 1px solid var(--ink-700);
  background:
    radial-gradient(130% 95% at 88% 0%, rgba(29, 51, 80, 0.6), transparent 62%),
    var(--ink-900);
}

.page-home .hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-home .hero__rail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  padding-top: 12px;
  border-top: 1px solid var(--ink-700);
}

.page-home .hero__rail-tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--silver-dim);
}

.page-home .hero__years {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--silver-dark);
}

.page-home .hero__years li.is-now {
  color: var(--amber);
}

.page-home .hero__vertical {
  display: none;
  margin: 0;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--silver-dim);
}

@media (min-width: 900px) {
  .page-home .hero__inner {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: clamp(24px, 3vw, 46px);
  }

  .page-home .hero__rail {
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: flex-start;
    gap: 22px;
    padding-top: 0;
    padding-right: 18px;
    border-top: 0;
    border-right: 1px solid var(--ink-700);
  }

  .page-home .hero__years {
    flex-direction: column;
    gap: 13px;
  }

  .page-home .hero__years li {
    position: relative;
    padding-left: 16px;
  }

  .page-home .hero__years li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.58em;
    width: 8px;
    height: 1px;
    background: var(--ink-700);
  }

  .page-home .hero__years li.is-now::before {
    width: 12px;
    background: var(--amber);
  }

  .page-home .hero__vertical {
    display: block;
  }
}

.page-home .hero__window {
  position: relative;
  overflow: hidden;
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  padding: clamp(22px, 4vw, 46px);
  box-shadow:
    inset 0 1px 0 rgba(244, 241, 233, 0.06),
    0 26px 56px -34px rgba(0, 0, 0, 0.9);
}

.page-home .hero__window::after {
  content: "";
  position: absolute;
  inset: 9px;
  border: 1px solid rgba(244, 241, 233, 0.07);
  pointer-events: none;
}

.page-home .hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.14;
  pointer-events: none;
}

.page-home .hero__stamp {
  position: absolute;
  z-index: 3;
  top: 0;
  right: 0;
  background: var(--amber);
  color: var(--ink-900);
  font-size: 11px;
  letter-spacing: 0.16em;
  padding: 7px 14px;
}

.page-home .hero__body {
  position: relative;
  z-index: 2;
}

.page-home .hero h1 {
  margin: 14px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(27px, 5.2vw, 54px);
  line-height: 1.14;
  letter-spacing: 0.045em;
  color: var(--paper);
  max-width: 22ch;
}

.page-home .hero__lede {
  margin: 0 0 24px;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--silver);
}

.page-home .hero__toc {
  margin: 0 0 26px;
}

.page-home .hero__toc ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .hero__toc a {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--ink-700);
  color: var(--silver);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-home .hero__toc a:hover,
.page-home .hero__toc a:focus-visible {
  color: var(--amber-soft);
  border-color: var(--amber);
  background: rgba(214, 154, 45, 0.08);
}

.page-home .hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--ink-700);
  border: 1px solid var(--ink-700);
}

@media (min-width: 720px) {
  .page-home .hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-home .fact {
  background: var(--ink-900);
  padding: 14px 16px 16px;
}

.page-home .fact dt {
  margin-bottom: 7px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--silver-dim);
}

.page-home .fact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.1;
  color: var(--amber-soft);
}

/* ---------- 通用章节 ---------- */
.page-home .section {
  padding: clamp(40px, 6vw, 82px) 0;
  border-bottom: 1px solid var(--ink-700);
}

.page-home .section__head {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-home .section__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 3.1vw, 33px);
  line-height: 1.25;
  letter-spacing: 0.045em;
  color: var(--paper);
}

/* ---------- 时间轴 ---------- */
.page-home .timeline {
  background: var(--ink-900);
}

.page-home .tl-scroll {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: var(--ink-700) transparent;
  padding-bottom: 14px;
  outline: none;
}

.page-home .tl-scroll:focus-visible {
  box-shadow: 0 0 0 2px var(--amber-soft);
}

.page-home .tl-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(236px, 268px);
  gap: 1px;
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--ink-700);
  border: 1px solid var(--ink-700);
}

.page-home .tl-node {
  position: relative;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 22px 20px 24px;
  background: var(--ink-900);
  transition: background var(--dur) var(--ease);
}

.page-home .tl-node::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--amber);
  transition: width var(--dur) var(--ease);
}

.page-home .tl-node:hover,
.page-home .tl-node:focus-within {
  background: var(--ink-800);
}

.page-home .tl-node:hover::before,
.page-home .tl-node:focus-within::before {
  width: 100%;
}

.page-home .tl-node__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  color: var(--silver-dim);
  transition: color var(--dur) var(--ease);
}

.page-home .tl-node:hover .tl-node__year,
.page-home .tl-node:focus-within .tl-node__year {
  color: var(--amber-soft);
}

.page-home .tl-node--current .tl-node__year {
  color: var(--amber);
}

.page-home .tl-node__title {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-home .tl-node__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--silver-dim);
}

.page-home .tl-node__link {
  margin-top: auto;
  align-self: flex-start;
  padding-top: 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-home .tl-node__link:hover,
.page-home .tl-node__link:focus-visible {
  color: var(--amber-soft);
  border-bottom-color: var(--amber);
}

.page-home .tl-hint {
  margin: 12px 0 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--silver-dark);
}

.page-home .tl-figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
  border: 1px solid var(--ink-700);
  background: var(--ink-800);
}

.page-home .tl-figure__media {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  opacity: 0.55;
}

.page-home .tl-figure__caption {
  padding: 12px 16px;
  border-top: 1px solid var(--ink-700);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--silver-dim);
}

/* ---------- 两条业务线 ---------- */
.page-home .lanes {
  background: var(--ink-900);
}

.page-home .lanes__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 900px) {
  .page-home .lanes__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(28px, 3.4vw, 44px);
  }

  .page-home .lane--b {
    margin-top: 30px;
  }
}

.page-home .lane {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-home .lane:hover,
.page-home .lane:focus-within {
  border-color: var(--amber);
  box-shadow: 0 0 0 1px rgba(214, 154, 45, 0.22), 0 22px 44px -30px rgba(0, 0, 0, 0.95);
}

.page-home .lane__media {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: 0.78;
  border-bottom: 1px solid var(--ink-700);
}

.page-home .lane__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 12px;
  padding: clamp(18px, 2.4vw, 28px);
}

.page-home .lane__tag {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--teal-soft);
}

.page-home .lane--b .lane__tag {
  color: var(--amber);
}

.page-home .lane__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.35;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-home .lane__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--silver);
}

.page-home .lane__points {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin: 2px 0 0;
  padding: 14px 0;
  list-style: none;
  border-top: 1px solid var(--ink-700);
  border-bottom: 1px solid var(--ink-700);
  font-size: 13px;
  line-height: 1.5;
  color: var(--silver-dim);
}

.page-home .lane__points .mono {
  margin-right: 6px;
  font-size: 15px;
  color: var(--amber-soft);
}

.page-home .lane__cta {
  margin-top: auto;
  align-self: flex-start;
}

/* ---------- 变更摘要 ---------- */
.page-home .changes {
  background: linear-gradient(180deg, var(--ink-800), var(--ink-900) 72%);
}

.page-home .changes__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: 8px;
}

@media (min-width: 900px) {
  .page-home .changes__head {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: end;
    gap: 40px;
  }
}

.page-home .filter-field {
  margin: 0;
}

.page-home .change-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--ink-700);
}

.page-home .change {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 20px 0 22px;
  border-bottom: 1px solid var(--ink-700);
  transition: background var(--dur) var(--ease);
}

@media (min-width: 720px) {
  .page-home .change {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }
}

.page-home .change:hover {
  background: rgba(18, 34, 56, 0.55);
}

.page-home .change__no {
  margin: 4px 0 0;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--silver-dark);
  transition: color var(--dur) var(--ease);
}

.page-home .change:hover .change__no {
  color: var(--amber);
}

.page-home .change__when {
  margin: 0;
}

.page-home .change__title {
  margin: 9px 0 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-home .change__desc {
  margin: 6px 0 0;
  max-width: 68ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--silver);
}

/* ---------- 编号与索引 ---------- */
.page-home .index {
  background: var(--ink-900);
}

.page-home .index__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

@media (min-width: 900px) {
  .page-home .index__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 62px);
  }
}

.page-home .index__lines {
  margin: 0 0 10px;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.82;
  color: var(--silver);
}

.page-home .index__example {
  display: inline-block;
  margin: 14px 0 16px;
  padding: 12px 18px;
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.3vw, 25px);
  letter-spacing: 0.09em;
  color: var(--amber-soft);
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--amber);
}

.page-home .index__nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ink-700);
}

.page-home .index__nav li {
  border-bottom: 1px solid var(--ink-700);
}

.page-home .index__nav a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 2px;
  text-decoration: none;
  transition: padding-left var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-home .index__nav a:hover,
.page-home .index__nav a:focus-visible {
  padding-left: 12px;
  background: rgba(214, 154, 45, 0.06);
}

.page-home .index__nav strong {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-home .index__nav span {
  font-size: 13px;
  line-height: 1.65;
  color: var(--silver-dim);
}

/* ---------- 站点信任 ---------- */
.page-home .trust {
  padding-bottom: clamp(48px, 7vw, 88px);
  border-bottom: 0;
}

.page-home .trust__panel {
  padding: clamp(20px, 3vw, 34px);
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--teal);
}

.page-home .trust__label {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--teal-soft);
}

.page-home .trust__panel p:last-child {
  margin: 14px 0 0;
  max-width: 78ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--silver);
}

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