.page-home {
  --home-line: 2px solid var(--line);
}

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

/* ================= 首屏：目录与主题声明 ================= */
.page-home .home-lede {
  padding-block: clamp(20px, 3.4vw, 40px) clamp(44px, 5.4vw, 84px);
}

.page-home .home-lede__head {
  display: grid;
  gap: 14px;
  max-width: 880px;
  margin-bottom: clamp(30px, 4vw, 58px);
}

.page-home .home-lede__title {
  margin: 0;
  font-size: clamp(30px, 5.6vw, 66px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-home .home-lede__lede {
  max-width: 720px;
  margin: 0;
  color: var(--body-dim);
  font-size: clamp(15.5px, 1.5vw, 18px);
}

.page-home .home-lede__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.page-home .home-lede__grid {
  display: grid;
  gap: var(--gap);
}

.page-home .home-index {
  border: var(--home-line);
  background: var(--midnight);
  padding: clamp(18px, 2.4vw, 30px);
  box-shadow: var(--shadow-cyan);
}

.page-home .home-index__title {
  margin: 0 0 14px;
  font-size: clamp(18px, 2vw, 22px);
  color: var(--fog);
}

.page-home .home-index__title::before {
  content: "";
  display: block;
  width: 46px;
  height: 4px;
  margin-bottom: 12px;
  background: var(--cyan);
}

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

.page-home .home-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 15px 6px;
  border-top: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
  transition: background-color .16s var(--ease), padding-left .16s var(--ease);
}

.page-home .home-index__list li:last-child .home-index__link {
  border-bottom: 1px solid var(--line);
}

.page-home .home-index__link:hover,
.page-home .home-index__link:focus-visible {
  background: var(--cyan-soft);
  padding-left: 14px;
}

.page-home .home-index__num {
  padding-top: 5px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-home .home-index__body {
  display: grid;
  gap: 5px;
}

.page-home .home-index__body strong {
  font-size: 17px;
  color: var(--fog);
}

.page-home .home-index__body span {
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-home .home-snapshot {
  border: var(--home-line);
  background-color: var(--midnight);
  background-image: linear-gradient(158deg, rgba(0, 229, 255, .10), rgba(138, 92, 255, .07) 54%, transparent 84%);
  padding: clamp(18px, 2.4vw, 30px);
}

.page-home .home-snapshot__title {
  margin: 0;
  font-size: clamp(18px, 2vw, 22px);
  color: var(--fog);
}

.page-home .home-snapshot__list {
  margin: 16px 0 20px;
  padding: 0;
}

.page-home .home-snapshot__row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line);
}

.page-home .home-snapshot__row dt {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-home .home-snapshot__row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--body-dim);
}

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

.page-home .home-snapshot__figure .figure__media {
  aspect-ratio: 16 / 9;
}

/* ================= 指标仪表板 ================= */
.page-home .home-metrics__head {
  max-width: 820px;
}

.page-home .home-metrics__lede {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--body-dim);
}

.page-home .home-tiles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 3.4vw, 44px) 0;
  border: var(--home-line);
  background: var(--line);
}

.page-home .home-tile {
  position: relative;
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(16px, 2.2vw, 28px);
  background: var(--indigo);
}

.page-home .home-tile::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: var(--line);
}

.page-home .home-tile--cyan::after { background: var(--cyan); }
.page-home .home-tile--violet::after { background: var(--violet); }
.page-home .home-tile--orange::after { background: var(--orange); }
.page-home .home-tile--mint::after { background: var(--mint); }

.page-home .home-tile__num {
  font-size: clamp(32px, 4.6vw, 56px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-home .home-tile__num em {
  font-style: normal;
  margin-left: 4px;
  font-size: .38em;
  color: var(--cyan);
}

.page-home .home-tile__label {
  font-size: 13px;
  line-height: 1.55;
  color: var(--slate);
}

.page-home .home-visuals {
  display: grid;
  gap: var(--gap);
  margin-bottom: clamp(30px, 3.8vw, 54px);
}

.page-home .home-visuals__wide .figure__media {
  aspect-ratio: 3 / 2;
}

.page-home .home-visuals__tall .figure__media {
  aspect-ratio: 4 / 5;
}

.page-home .home-visuals .figure__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-home .home-board__bar {
  margin-bottom: 22px;
}

.page-home .home-board__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-home .home-metric {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(18px, 2.2vw, 26px);
  transition: transform .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-home .home-metric:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: var(--shadow-cyan);
}

.page-home .home-metric.is-in {
  animation: home-fade .18s var(--ease) both;
}

@keyframes home-fade {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.page-home .home-metric__tag {
  justify-self: start;
}

.page-home .home-metric__name {
  margin: 0;
  font-size: clamp(19px, 2.3vw, 25px);
  color: var(--fog);
}

.page-home .home-metric__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--body-dim);
}

.page-home .home-metric__foot {
  margin: 4px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--slate);
}

/* ================= 时间纵深 ================= */
.page-home .home-timeline__head {
  max-width: 760px;
  margin-bottom: clamp(24px, 3.2vw, 44px);
}

.page-home .home-timeline__grid {
  display: grid;
  gap: var(--gap);
}

.page-home .home-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  border-left: 3px solid var(--line);
  display: grid;
  gap: 24px;
}

.page-home .home-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 12px;
}

.page-home .home-timeline__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 6px;
  width: 13px;
  height: 13px;
  background: var(--indigo);
  border: 3px solid var(--cyan);
  transform: rotate(45deg);
}

.page-home .home-timeline__year {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--cyan);
  padding-top: 2px;
}

.page-home .home-timeline__body h3 {
  margin: 0 0 5px;
  font-size: 17px;
  color: var(--fog);
}

.page-home .home-timeline__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--slate);
}

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

.page-home .home-timeline__figure .figure__media {
  aspect-ratio: 2 / 1;
}

/* ================= 更新索引 ================= */
.page-home .home-feed__head {
  max-width: 780px;
}

.page-home .home-feed__lede {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--body-dim);
}

.page-home .home-feed__list {
  list-style: none;
  margin: clamp(24px, 3.2vw, 40px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-home .home-feed__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 16px;
  align-items: center;
  padding: 15px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color .16s var(--ease);
}

.page-home .home-feed__row:hover {
  background: rgba(0, 229, 255, .06);
}

.page-home .home-feed__time {
  grid-column: 1 / -1;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-home .home-feed__text {
  font-size: 15px;
  line-height: 1.65;
  color: var(--fog);
}

.page-home .home-feed__foot {
  margin: 28px 0 0;
}

/* ================= 站点说明 ================= */
.page-home .home-notes__grid {
  display: grid;
  gap: var(--gap);
}

.page-home .home-notes__statement h2 {
  margin: 10px 0 14px;
  font-size: clamp(22px, 2.8vw, 34px);
  color: var(--fog);
}

.page-home .home-notes__statement p {
  max-width: 640px;
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.82;
  color: var(--body-dim);
}

.page-home .home-notes__nav {
  border: var(--home-line);
  background: var(--midnight);
  padding: clamp(18px, 2.2vw, 26px);
}

.page-home .home-notes__nav-title {
  margin: 0 0 12px;
  font-size: 14px;
  letter-spacing: .12em;
  color: var(--slate);
}

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

.page-home .home-notes__nav a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: baseline;
  padding: 13px 2px;
  border-top: 1px solid var(--line);
  font-size: 15.5px;
  font-weight: 600;
  color: var(--fog);
  text-decoration: none;
  transition: color .16s var(--ease), padding-left .16s var(--ease);
}

.page-home .home-notes__nav li:last-child a {
  border-bottom: 1px solid var(--line);
}

.page-home .home-notes__nav a:hover,
.page-home .home-notes__nav a:focus-visible {
  color: var(--cyan);
  padding-left: 8px;
}

.page-home .home-notes__nav a span {
  font-size: 12.5px;
  font-weight: 400;
  color: var(--slate);
  text-align: right;
}

/* ================= 响应式 ================= */
@media (min-width: 700px) {
  .page-home .home-board__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .home-feed__row {
    grid-template-columns: 132px minmax(0, 1fr) auto;
  }

  .page-home .home-feed__time {
    grid-column: auto;
  }
}

@media (min-width: 880px) {
  .page-home .home-visuals {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 920px) {
  .page-home .home-lede__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-home .home-timeline__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-home .home-notes__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-home .home-tiles {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1060px) {
  .page-home .home-board__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-home .home-snapshot__row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .page-home .home-timeline__item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .page-home .home-notes__nav a {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .page-home .home-notes__nav a span {
    text-align: left;
  }
}