/* 页面专属样式 · 首页 home */
.page-home {
  --ph-hero-min-height: min(90vh, 680px);
  --ph-card-translate: -6px;
  --ph-glow-blur: 18px;
}

/* 面包屑 */
.page-home .breadcrumb {
  position: relative;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
  padding: var(--space-sm) var(--space-md);
  max-width: var(--max-width);
  margin: 0 auto;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}
.page-home .breadcrumb a {
  color: var(--color-accent-cyan);
  text-underline-offset: 2px;
  text-decoration: underline transparent;
  transition: text-decoration-color 0.2s;
}
.page-home .breadcrumb a:hover,
.page-home .breadcrumb a:focus-visible {
  text-decoration-color: var(--color-accent-cyan);
}
.page-home .breadcrumb [aria-current="page"] {
  color: var(--color-text-primary);
  font-weight: 500;
}

/* ── 首屏区域 ── */
.ph-hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: var(--ph-hero-min-height);
  overflow: hidden;
  background-color: var(--color-base-dark);
}
.ph-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.35;
  mix-blend-mode: screen;
}
.ph-hero__bg-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.ph-hero__inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
}
.ph-hero__brand {
  width: 200px;
  max-width: 50vw;
  margin-bottom: var(--space-xs);
}
.ph-hero__logo {
  display: block;
  width: 100%;
  height: auto;
}
.ph-hero__title {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.15em;
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 800;
  line-height: 1.1;
  margin: 0;
}
.ph-hero__title-gold {
  color: var(--color-accent-gold);
  text-shadow: 0 0 20px rgba(255, 215, 0, 0.4);
}
.ph-hero__title-cyan {
  color: var(--color-accent-cyan);
  text-shadow: 0 0 20px rgba(0, 229, 255, 0.4);
}
.ph-hero__sub {
  font-family: var(--font-body);
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  letter-spacing: 0.04em;
  margin: 0;
}

/* ── 入口卡片区 ── */
.ph-cards {
  padding: var(--space-xl) var(--space-md);
  max-width: var(--max-width);
  margin: 0 auto;
}
.ph-cards__header {
  margin-bottom: var(--space-lg);
  max-width: 640px;
}
.ph-cards__heading {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text-primary);
  margin: var(--space-xs) 0 0 0;
}
.ph-cards__desc {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: var(--space-xs) 0 0 0;
  line-height: 1.6;
}

.ph-cards__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

/* 卡片 */
.ph-card {
  position: relative;
  background-color: var(--color-surface-medium);
  border-radius: 0;
  transition: transform 0.35s var(--ease-elastic), box-shadow 0.35s ease;
  transform: translateY(0);
  will-change: transform;
}
.ph-card:hover,
.ph-card:focus-within {
  transform: translateY(var(--ph-card-translate));
  box-shadow: 0 8px 32px rgba(0, 229, 255, 0.25), 0 0 0 1px rgba(0, 229, 255, 0.3);
}
.ph-card__link {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-xs);
  padding: var(--space-md);
  color: inherit;
  text-decoration: none;
  min-height: 200px;
}
.ph-card__icon {
  width: 80px;
  height: 80px;
  flex-shrink: 0;
}
.ph-card__icon-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.ph-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-accent-gold);
  margin: 0;
}
.ph-card__text {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin: 0;
  flex: 1;
}
.ph-card__action {
  display: inline-flex;
  align-items: center;
  gap: 0.25em;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent-cyan);
  transition: gap 0.2s;
}
.ph-card__link:hover .ph-card__action,
.ph-card__link:focus-visible .ph-card__action {
  gap: 0.5em;
}

/* ── 最新动态 ── */
.ph-updates {
  padding: var(--space-lg) var(--space-md) var(--space-xl);
  max-width: var(--max-width);
  margin: 0 auto;
}
.ph-updates .glow-line {
  display: block;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-cyan), transparent 80%);
  margin-bottom: var(--space-md);
}
.ph-updates__inner {
  padding: 0;
}
.ph-updates__heading {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text-primary);
  margin: var(--space-xs) 0 var(--space-sm) 0;
}
.ph-updates__meta {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 var(--space-sm) 0;
}
.ph-updates__tag {
  display: inline-block;
  padding: 0.1em 0.5em;
  border: 1px solid var(--color-accent-cyan);
  color: var(--color-accent-cyan);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.ph-updates__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.ph-updates__item {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  line-height: 1.6;
  padding-left: var(--space-sm);
  border-left: 2px solid var(--color-accent-gold);
}
.ph-updates__item strong {
  color: var(--color-accent-gold);
  font-weight: 600;
}
.ph-updates__more {
  margin-top: var(--space-md);
}

/* ── 响应式 ── */
@media (min-width: 640px) {
  .ph-hero__title {
    font-size: calc(var(--text-3xl) * 1.15);
  }
  .ph-cards__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md) var(--space-lg);
  }
}

@media (min-width: 1024px) {
  .ph-hero__title {
    font-size: calc(var(--text-3xl) * 1.45);
  }
  .ph-hero__sub {
    font-size: var(--text-lg);
  }
  .ph-cards__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
  }
  .ph-cards__heading {
    font-size: var(--text-3xl);
  }
  .ph-updates__heading {
    font-size: var(--text-3xl);
  }
}

/* 确保窄屏不横向溢出 */
.page-home img {
  max-width: 100%;
  height: auto;
}
</PAGE_CSS>