.page-home {
  display: block;
}

.page-home a:focus-visible,
.page-home button:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* ---------------- 首屏 ---------------- */

.page-home .hero-bay {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: var(--border-thin) solid var(--color-line);
  padding-block: var(--space-8) calc(var(--space-8) * 1.25);
  background:
    radial-gradient(120% 95% at 84% 4%, color-mix(in srgb, var(--color-primary) 30%, transparent) 0%, transparent 60%),
    radial-gradient(90% 70% at 2% 98%, color-mix(in srgb, var(--color-accent) 12%, transparent) 0%, transparent 62%),
    var(--color-surface);
}

.page-home .hero-bay::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: repeating-linear-gradient(
    180deg,
    color-mix(in srgb, var(--color-ink) 4%, transparent) 0 1px,
    transparent 1px 7px
  );
}

.page-home .hero-bay-inner {
  display: grid;
  gap: var(--space-6);
  align-items: start;
}

.page-home .hero-kicker {
  margin: 0 0 var(--space-3);
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.page-home .hero-title {
  margin: 0 0 var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 1.06;
  letter-spacing: var(--tracking-heading);
  color: color-mix(in srgb, var(--color-primary-ink) 88%, var(--color-ink));
}

.page-home .hero-lede {
  max-width: 44ch;
  margin: 0;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.page-home .hero-visual {
  display: grid;
  gap: var(--space-3);
  min-width: 0;
}

.page-home .hero-figure {
  margin: 0;
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 55%, var(--color-line));
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
}

.page-home .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 var(--space-3);
  margin: 0;
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-accent) 32%, var(--color-line));
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface-alt) 74%, transparent);
  backdrop-filter: blur(10px);
}

.page-home .hero-stat {
  padding: var(--space-2) 0;
  border-top: var(--border-thin) solid var(--color-line);
  min-width: 0;
}

.page-home .hero-stat dt {
  margin: 0 0 var(--space-1);
}

.page-home .hero-stat dd {
  margin: 0;
}

.page-home .hero-stat .stat-figure {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-accent);
}

.page-home .hero-stat .metric-note {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  line-height: 1.55;
  color: var(--color-ink-muted);
}

.page-home .hero-bars {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
}

.page-home .hero-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-1) var(--space-2);
  align-items: center;
}

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

.page-home .hero-bar-value {
  font-size: var(--text-sm);
  color: var(--color-accent);
}

.page-home .hero-bar .bar {
  grid-column: 1 / -1;
  height: 6px;
  margin-top: var(--space-1);
  border-radius: var(--radius-pill);
  overflow: hidden;
  background: color-mix(in srgb, var(--color-surface-deep) 78%, transparent);
  transition: box-shadow 180ms ease;
}

.page-home .hero-bar .bar:hover,
.page-home .hero-bar .bar:focus-within {
  box-shadow: var(--shadow-1);
}

.page-home .hero-bar .bar-fill {
  display: block;
  width: var(--bar-value, 0%);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

/* ---------------- 通用标题 ---------------- */

.page-home .section-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-home .prose + .prose {
  margin-top: var(--space-2);
}

/* ---------------- 四个核心条目 ---------------- */

.page-home .core-layout {
  display: grid;
  gap: var(--space-6);
}

.page-home .core-rail {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface-alt) 62%, transparent);
}

.page-home .rail-label {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-home .rail-link {
  display: block;
  padding: var(--space-1) var(--space-2);
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.page-home .rail-link:hover,
.page-home .rail-link:focus-visible {
  color: var(--color-accent);
  border-left-color: var(--color-accent);
  background: var(--color-primary-soft);
}

.page-home .core-rail-note {
  margin: var(--space-2) 0 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

.page-home .core-main {
  min-width: 0;
}

.page-home .core-main .section-head {
  margin-bottom: var(--space-4);
}

.page-home .core-grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.page-home .core-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(
    160deg,
    var(--color-surface-alt) 0%,
    color-mix(in srgb, var(--color-surface-alt) 68%, var(--color-surface)) 100%
  );
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.page-home .core-card:hover {
  border-color: color-mix(in srgb, var(--color-accent) 46%, var(--color-line));
  box-shadow: var(--shadow-2);
  transform: translateY(-2px);
}

.page-home .core-card img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 8 / 5;
  object-fit: cover;
}

.page-home .core-card-body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-3);
}

.page-home .core-card-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-home .core-card-desc {
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.72;
  color: var(--color-ink-soft);
}

.page-home .core-card-meta {
  width: 100%;
  margin: 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-home .core-card-meta .mono {
  color: var(--color-accent);
}

.page-home .core-card .link-arrow {
  margin-top: auto;
  font-size: var(--text-sm);
}

/* ---------------- 分析人员入口 ---------------- */

.page-home .analysis-block {
  display: grid;
  gap: var(--space-6);
}

.page-home .analysis-copy .section-title {
  margin-bottom: var(--space-3);
}

.page-home .analysis-copy .prose {
  margin: 0 0 var(--space-3);
  color: var(--color-ink-soft);
}

.page-home .analysis-copy .btn {
  margin-top: var(--space-2);
}

.page-home .analysis-boards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
}

.page-home .ability-group {
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-top: 2px solid color-mix(in srgb, var(--color-primary) 78%, var(--color-accent));
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface-alt) 66%, transparent);
  min-width: 0;
}

.page-home .ability-group:nth-child(2n) {
  border-top-color: color-mix(in srgb, var(--color-accent) 62%, var(--color-line));
}

.page-home .ability-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}

.page-home .ability-list {
  display: grid;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .ability-list li {
  position: relative;
  padding: var(--space-1) 0 var(--space-1) var(--space-3);
  border-bottom: var(--border-thin) dashed color-mix(in srgb, var(--color-line) 72%, transparent);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-ink);
}

.page-home .ability-list li:last-child {
  border-bottom: 0;
}

.page-home .ability-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: calc(var(--text-base) * 0.62);
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--color-accent);
}

/* ---------------- 版本与回放对局 ---------------- */

.page-home .version-band {
  display: grid;
  margin-top: var(--space-4);
  overflow: hidden;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface-alt);
}

.page-home .version-media {
  margin: 0;
  border-radius: 0;
}

.page-home .version-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  min-height: 210px;
  object-fit: cover;
}

.page-home .version-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  min-width: 0;
}

.page-home .version-subtitle {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-accent);
}

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

.page-home .version-list {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .version-list li {
  position: relative;
  padding-left: var(--space-3);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-ink);
}

.page-home .version-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: calc(var(--text-base) * 0.6);
  width: 8px;
  height: 2px;
  background: var(--color-primary);
}

.page-home .version-list .mono {
  color: var(--color-accent);
}

.page-home .version-body .link-arrow {
  align-self: flex-start;
  margin-top: var(--space-1);
}

/* ---------------- 下一步 ---------------- */

.page-home .next-banner {
  margin: 0 0 var(--space-6);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
}

.page-home .next-head {
  margin-bottom: var(--space-4);
}

.page-home .next-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
}

.page-home .next-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface-alt) 72%, transparent);
  color: var(--color-ink);
  text-decoration: none;
  transition: border-color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.page-home .next-card:hover,
.page-home .next-card:focus-visible {
  border-color: var(--color-accent);
  background: var(--color-primary-soft);
  transform: translateY(-2px);
}

.page-home .next-index {
  font-size: var(--text-sm);
  letter-spacing: 0.18em;
  color: var(--color-accent);
}

.page-home .next-card h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-home .next-card p {
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-home .next-foot {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-6);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .next-note {
  max-width: var(--measure);
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-home .next-note a {
  color: var(--color-accent);
  text-underline-offset: 3px;
}

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

.page-home .fine-print a {
  color: var(--color-ink-muted);
  text-underline-offset: 3px;
}

/* ---------------- 响应式 ---------------- */

@media (min-width: 600px) {
  .page-home .analysis-boards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .version-body {
    padding: var(--space-4);
  }
}

@media (min-width: 760px) {
  .page-home .section-title {
    font-size: var(--text-3xl);
  }

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

@media (min-width: 900px) {
  .page-home .hero-bay-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: var(--space-8);
  }

  .page-home .analysis-block {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-home .version-band {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }

  .page-home .version-media img {
    min-height: 100%;
  }

  .page-home .version-body {
    padding: var(--space-6);
  }
}

@media (min-width: 960px) {
  .page-home .core-layout {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-home .core-rail {
    position: sticky;
    top: 104px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-home .core-card,
  .page-home .next-card,
  .page-home .rail-link,
  .page-home .hero-bar .bar {
    transition: none;
  }

  .page-home .core-card:hover,
  .page-home .next-card:hover {
    transform: none;
  }
}

.page-home {
  --bar-value: 1rem;
}