.page-home {
  display: block;
  background: var(--color-surface);
  color: var(--color-ink);
}

/* ============ 首屏 ============ */
.page-home .home-hero {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--space-6) 0 var(--space-8);
  position: relative;
  overflow: hidden;
}

.page-home .home-hero__crumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  margin-bottom: var(--space-6);
}

.page-home .home-hero__crumb a {
  color: var(--color-contrast-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-home .home-hero__crumb a:hover {
  color: var(--color-contrast-accent);
  border-bottom-color: var(--color-contrast-accent);
}

.page-home .home-hero__crumb .breadcrumb__sep {
  color: var(--color-contrast-accent);
}

.page-home .home-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: start;
}

.page-home .home-hero__kicker {
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-contrast-ink);
  opacity: 0.82;
  margin: 0 0 var(--space-3);
}

.page-home .home-hero__kicker-no {
  display: inline-block;
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
  padding: 0 var(--space-1);
  border-radius: var(--radius-sm);
  margin-right: var(--space-1);
}

.page-home .home-hero__title {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 0.98;
  letter-spacing: var(--tracking-heading);
  margin: 0 0 var(--space-4);
  color: var(--color-contrast-ink);
}

.page-home .home-hero__lead {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.86;
  max-width: 52ch;
  margin: 0;
  padding-left: var(--space-3);
  border-left: var(--border-thick) solid var(--color-contrast-accent);
}

.page-home .home-hero__wall {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin: var(--space-8) 0 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-contrast-line);
  padding-top: var(--space-6);
}

.page-home .home-hero__wall .number-wall__item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  border-left: var(--border-thin) solid var(--color-contrast-line);
  padding-left: var(--space-3);
}

.page-home .home-hero__wall .number-wall__value {
  font-family: var(--font-heading);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 0.92;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-home .home-hero__wall .number-wall__unit {
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-contrast-ink);
  opacity: 0.66;
}

.page-home .home-hero__aside {
  position: relative;
  padding-bottom: var(--space-4);
}

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

.page-home .home-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 300px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: var(--border-thin) solid var(--color-contrast-line);
}

.page-home .home-hero__claim {
  position: relative;
  z-index: 2;
  margin-top: calc(-1 * var(--space-4));
  background: var(--color-surface);
  color: var(--color-ink);
  padding: var(--space-4);
  border-left: var(--border-thick) solid var(--color-primary);
  border-radius: var(--radius-sm);
}

.page-home .home-hero__claim-no {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-2);
}

.page-home .home-hero__claim-text {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  margin: 0;
}

/* ============ 主体骨架 ============ */
.page-home .home-body {
  padding-top: var(--space-8);
  padding-bottom: var(--section-y-lg);
}

.page-home .home-rail {
  display: none;
}

.page-home .home-rail__head {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-3);
}

.page-home .home-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .home-rail__item {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-home .home-rail__link {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-2) var(--space-3) 0;
  color: var(--color-ink-soft);
  text-decoration: none;
  border-left: var(--border-thick) solid transparent;
  padding-left: var(--space-3);
  transition: border-color 0.16s ease, background-color 0.16s ease;
}

.page-home .home-rail__link:hover,
.page-home .home-rail__link:focus-visible {
  border-left-color: var(--color-primary);
  background: var(--color-surface-alt);
  color: var(--color-ink);
}

.page-home .home-rail__no {
  font-size: var(--text-xs);
  color: var(--color-primary);
}

.page-home .home-rail__label {
  font-size: var(--text-sm);
}

.page-home .home-rail__foot {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  margin: var(--space-3) 0 0;
}

.page-home .home-flow {
  min-width: 0;
}

/* ============ 通用区块 ============ */
.page-home .home-block {
  padding-top: var(--space-8);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .home-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-home .home-block + .home-block {
  margin-top: var(--space-8);
}

.page-home .home-block__head {
  margin-bottom: var(--space-6);
}

.page-home .home-block__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

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

.page-home .home-index__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: var(--border-thin) solid var(--color-line);
}

.page-home .home-index__figure figcaption {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  margin-top: var(--space-2);
}

/* ============ 索引分区 ============ */
.page-home .home-index__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.page-home .home-index__tag {
  display: inline-block;
  margin: 0 0 var(--space-3);
}

.page-home .home-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .home-entry {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "no state"
    "body body";
  gap: var(--space-1) var(--space-3);
  padding: var(--space-3) var(--space-2) var(--space-3) var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
  transition: background-color 0.16s ease;
}

.page-home .home-entry::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--border-thick);
  background: var(--color-primary);
  transition: width 0.16s ease;
}

.page-home .home-entry:hover {
  background: var(--color-surface-alt);
}

.page-home .home-entry:hover::before {
  width: 4px;
}

.page-home .home-entry__no {
  grid-area: no;
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.04em;
}

.page-home .home-entry__state {
  grid-area: state;
  justify-self: end;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-home .home-entry__body {
  grid-area: body;
}

.page-home .home-entry__title {
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-1);
  line-height: 1.35;
}

.page-home .home-entry__desc {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  margin: 0;
}

/* ============ 条目规模 ============ */
.page-home .home-scale__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: start;
}

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

.page-home .home-scale__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: var(--border-thin) solid var(--color-line);
}

.page-home .home-scale__figure figcaption {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  margin-top: var(--space-2);
}

.page-home .home-scale__text {
  position: relative;
  z-index: 2;
  background: var(--color-surface);
  padding: var(--space-4) var(--space-4) var(--space-4) var(--space-3);
  border-left: var(--border-thick) solid var(--color-accent);
  border-radius: var(--radius-sm);
}

.page-home .home-scale__text > p {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  margin: 0 0 var(--space-4);
}

.page-home .home-scale__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  margin: 0;
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .home-scale__stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.page-home .home-scale__stat dt {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: 0.04em;
}

.page-home .home-scale__stat dd {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.05;
  color: var(--color-ink);
  margin: 0;
}

/* ============ 四个重点栏目 ============ */
.page-home .home-col {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  padding: var(--space-6) 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .home-col:first-of-type {
  border-top: var(--border-thick) solid var(--color-ink);
}

.page-home .home-col__no {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin: 0 0 var(--space-2);
}

.page-home .home-col__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.05;
  color: var(--color-ink);
  margin: 0 0 var(--space-2);
}

.page-home .home-col__desc {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  margin: 0 0 var(--space-3);
}

.page-home .home-col__link {
  display: inline-block;
  font-size: var(--text-sm);
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-primary);
  padding-bottom: 1px;
}

.page-home .home-col__link:hover {
  color: var(--color-focus);
  border-bottom-color: var(--color-focus);
}

.page-home .home-svc {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .home-svc__item {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-2) var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  border-left: var(--border-thick) solid transparent;
  padding-left: var(--space-3);
  transition: background-color 0.16s ease, border-color 0.16s ease;
}

.page-home .home-svc__item:hover {
  background: var(--color-surface-alt);
  border-left-color: var(--color-primary);
}

.page-home .home-svc__no {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  min-width: 3.4em;
}

.page-home .home-svc__name {
  font-size: var(--text-sm);
  color: var(--color-ink);
}

.page-home .home-topic {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .home-topic__row {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "no name"
    "tag n";
  gap: var(--space-1) var(--space-3);
  align-items: baseline;
  padding: var(--space-2) var(--space-2) var(--space-2) var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
  border-left: var(--border-thick) solid var(--color-line);
  transition: background-color 0.16s ease, border-color 0.16s ease;
}

.page-home .home-topic__row:hover {
  background: var(--color-surface-alt);
  border-left-color: var(--color-accent);
}

.page-home .home-topic__no {
  grid-area: no;
  font-size: var(--text-xs);
  color: var(--color-accent);
}

.page-home .home-topic__name {
  grid-area: name;
  font-size: var(--text-sm);
  color: var(--color-ink);
}

.page-home .home-topic__tag {
  grid-area: tag;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-home .home-topic__n {
  grid-area: n;
  justify-self: end;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-home .home-node {
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--space-4);
  position: relative;
}

.page-home .home-node::before {
  content: "";
  position: absolute;
  left: 3px;
  top: var(--space-2);
  bottom: var(--space-2);
  width: var(--border-thin);
  background: var(--color-line);
}

.page-home .home-node__item {
  position: relative;
  padding: var(--space-2) 0 var(--space-4);
}

.page-home .home-node__dot {
  position: absolute;
  left: calc(-1 * var(--space-4) + 0.5px);
  top: calc(var(--space-2) + 4px);
  width: 7px;
  height: 7px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

.page-home .home-node__item:nth-child(2) .home-node__dot,
.page-home .home-node__item:nth-child(4) .home-node__dot {
  background: var(--color-accent);
}

.page-home .home-node__time {
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-1);
}

.page-home .home-node__body {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  margin: 0;
}

.page-home .home-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  counter-reset: hs;
}

.page-home .home-steps__item {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--color-primary-soft);
  border-left: var(--border-thick) solid var(--color-primary);
  border-radius: var(--radius-sm);
}

.page-home .home-steps__item:nth-child(even) {
  background: var(--color-highlight);
  border-left-color: var(--color-accent);
}

.page-home .home-steps__no {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-home .home-steps__name {
  font-size: var(--text-sm);
  color: var(--color-ink);
}

/* ============ 上手起点 ============ */
.page-home .home-start__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-home .home-start__card {
  display: block;
  text-decoration: none;
  padding: var(--space-6) var(--space-4);
  border-radius: var(--radius-sm);
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
  transition: background-color 0.16s ease, border-color 0.16s ease;
}

.page-home .home-start__card--primary {
  background: var(--color-contrast-surface);
  border-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-home .home-start__card:hover {
  border-color: var(--color-primary);
}

.page-home .home-start__no {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-3);
}

.page-home .home-start__card--primary .home-start__no {
  color: var(--color-contrast-accent);
}

.page-home .home-start__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1.02;
  margin: 0 0 var(--space-3);
  color: var(--color-ink);
}

.page-home .home-start__card--primary .home-start__title {
  color: var(--color-contrast-ink);
}

.page-home .home-start__desc {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  margin: 0 0 var(--space-4);
  max-width: 46ch;
}

.page-home .home-start__card--primary .home-start__desc {
  color: var(--color-contrast-ink);
  opacity: 0.8;
}

.page-home .home-start__go {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-primary);
}

.page-home .home-start__card--primary .home-start__go {
  color: var(--color-contrast-accent);
}

/* ============ 更新与反馈 ============ */
.page-home .home-update__list {
  list-style: none;
  margin: 0 0 var(--space-6);
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .home-update__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-2) var(--space-4) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  border-left: var(--border-thick) solid transparent;
  padding-left: var(--space-3);
  transition: background-color 0.16s ease, border-color 0.16s ease;
}

.page-home .home-update__item:hover {
  background: var(--color-surface-alt);
  border-left-color: var(--color-primary);
}

.page-home .home-update__no {
  font-size: var(--text-xs);
  color: var(--color-primary);
  padding-top: 2px;
}

.page-home .home-update__title {
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-1);
  line-height: 1.3;
}

.page-home .home-update__desc {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  margin: 0;
}

.page-home .home-update__figure {
  margin: 0 0 var(--space-6);
}

.page-home .home-update__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: var(--border-thin) solid var(--color-line);
}

.page-home .home-update__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  margin: 0;
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .home-update__link {
  font-size: var(--text-sm);
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-line);
  padding-bottom: 2px;
}

.page-home .home-update__link:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ============ 平板 ============ */
@media (min-width: 680px) {
  .page-home .home-hero__wall {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-3);
  }

  .page-home .home-hero__wall .number-wall__item:nth-child(1) {
    margin-top: 0;
  }

  .page-home .home-hero__wall .number-wall__item:nth-child(2) {
    margin-top: var(--space-6);
  }

  .page-home .home-hero__wall .number-wall__item:nth-child(3) {
    margin-top: var(--space-2);
  }

  .page-home .home-index__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-6);
  }

  .page-home .home-svc {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-4);
  }

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

  .page-home .home-topic__row {
    grid-template-columns: auto 1fr auto auto;
    grid-template-areas: "no name tag n";
    gap: var(--space-3);
    align-items: baseline;
  }

  .page-home .home-entry {
    grid-template-columns: auto 1fr auto;
    grid-template-areas: "no .page-home state";
    align-items: start;
  }

  .page-home .home-scale__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .home-start__grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

/* ============ 桌面 ============ */
@media (min-width: 900px) {
  .page-home .home-hero {
    padding-top: var(--space-8);
  }

  .page-home .home-hero__grid {
    grid-template-columns: 1.12fr 0.88fr;
    gap: var(--space-8);
  }

  .page-home .home-hero__figure img {
    max-height: 460px;
  }

  .page-home .home-hero__claim {
    margin-top: calc(-1 * var(--space-8));
    margin-left: calc(-1 * var(--space-6));
    padding: var(--space-6) var(--space-4);
  }

  .page-home .home-rail {
    display: block;
    position: sticky;
    top: var(--space-8);
    align-self: start;
  }

  .page-home .home-index__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .home-block__top {
    grid-template-columns: 1.35fr 0.65fr;
    gap: var(--space-8);
    align-items: start;
  }

  .page-home .home-index__figure {
    margin-top: var(--space-8);
    margin-left: calc(-1 * var(--space-4));
  }

  .page-home .home-scale__grid {
    grid-template-columns: 0.92fr 1.08fr;
    gap: var(--space-8);
  }

  .page-home .home-scale__text {
    margin-top: var(--space-8);
    margin-left: calc(-1 * var(--space-6));
    padding: var(--space-6);
  }

  .page-home .home-col {
    grid-template-columns: 0.82fr 1.18fr;
    gap: var(--space-8);
    padding: var(--space-8) 0;
  }

  .page-home .home-col--steps {
    grid-template-columns: 1fr;
  }

  .page-home .home-col--steps .home-steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-home .home-steps__item {
    flex-direction: column;
    gap: var(--space-2);
    align-items: flex-start;
  }

  .page-home .home-start__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--space-6);
  }

  .page-home .home-update__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-top: 0;
    column-gap: var(--space-6);
  }

  .page-home .home-update__item {
    border-top: var(--border-thin) solid var(--color-line);
  }
}

/* ============ 减少动效 ============ */
@media (prefers-reduced-motion: reduce) {
  .page-home .home-entry,
  .page-home .home-entry::before,
  .page-home .home-svc__item,
  .page-home .home-topic__row,
  .page-home .home-update__item,
  .page-home .home-start__card,
  .page-home .home-rail__link {
    transition: none;
  }
}
</main>