.page-home {
  --ph-grid-line: rgba(34, 48, 77, 0.55);
  --ph-grid-soft: rgba(34, 48, 77, 0.3);
  --ph-gold-hover: rgba(232, 185, 106, 0.08);
  --ph-purple-soft: rgba(123, 108, 246, 0.12);
  --ph-card-bg: rgba(255, 255, 255, 0.04);
  position: relative;
  overflow-x: hidden;
  background:
    radial-gradient(ellipse 80% 45% at 90% -5%, rgba(30, 27, 75, 0.85), transparent 70%),
    radial-gradient(ellipse 45% 35% at 5% 22%, rgba(123, 108, 246, 0.14), transparent 65%),
    linear-gradient(180deg, #050A1F 0%, #070D28 100%);
}

.page-home [id] {
  scroll-margin-top: 96px;
}

/* ===== Hero ===== */
.page-home .ph-hero {
  position: relative;
  box-sizing: border-box;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: safe center;
  overflow: hidden;
  padding: 128px 0 40px;
}

.page-home .ph-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
  pointer-events: none;
}

.page-home .ph-hero__grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    linear-gradient(var(--ph-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--ph-grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.8), transparent 85%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.8), transparent 85%);
}

.page-home .ph-hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 32px;
  width: 100%;
}

.page-home .ph-hero__content {
  max-width: 720px;
}

.page-home .ph-hero__breadcrumb-sep {
  margin: 0 8px;
  color: var(--color-grid);
}

.page-home .breadcrumb {
  font-family: var(--font-number);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin-bottom: 18px;
}

.page-home .breadcrumb [aria-current="page"] {
  color: var(--color-gold);
}

.page-home .ph-hero__status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 14px 0 20px;
  padding: 8px 14px;
  border: 1px solid rgba(232, 185, 106, 0.35);
  border-radius: 999px;
  background: rgba(232, 185, 106, 0.06);
  font-size: 0.8125rem;
  font-family: var(--font-number);
  letter-spacing: 0.08em;
  color: var(--color-gold);
}

.page-home .ph-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: none;
  background: var(--color-gold);
  box-shadow: 0 0 0 rgba(232, 185, 106, 0.4);
  animation: ph-home-pulse 2s ease-out infinite;
}

@keyframes ph-home-pulse {
  0% { box-shadow: 0 0 0 0 rgba(232, 185, 106, 0.5); }
  70% { box-shadow: 0 0 0 8px rgba(232, 185, 106, 0); }
  100% { box-shadow: 0 0 0 0 rgba(232, 185, 106, 0); }
}

.page-home .ph-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-heading);
  font-weight: 300;
  font-size: clamp(2rem, 4.6vw, 3.6rem);
  line-height: 1.2;
  letter-spacing: 0.06em;
  color: var(--color-text-primary);
}

.page-home .ph-hero__title-sep {
  color: var(--color-gold);
}

.page-home .ph-hero__lead {
  margin: 0 0 26px;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.page-home .ph-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-home .ph-entry {
  position: relative;
  padding: 22px 20px;
  border: 1px solid var(--color-grid);
  border-radius: var(--radius-md);
  background: var(--ph-card-bg);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.page-home .ph-entry::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 20px;
  right: 20px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-gold), transparent 85%);
}

.page-home .ph-entry__kicker {
  margin: 0 0 10px;
  font-family: var(--font-number);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--color-purple);
}

.page-home .ph-entry__title {
  margin: 0 0 8px;
  font-size: 1.1875rem;
  font-weight: 500;
  color: var(--color-text-primary);
}

.page-home .ph-entry__tip {
  margin: 0 0 16px;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.page-home .ph-entry__link {
  display: inline-block;
  color: var(--color-gold);
  font-size: 0.875rem;
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 185, 106, 0.5);
  transition: border-color 0.25s ease, color 0.25s ease;
}

.page-home .ph-entry__link:hover {
  border-color: var(--color-gold);
  color: var(--color-gold-hover);
}

.page-home .ph-hero__preview {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 0;
  margin-top: 48px;
  border-top: 1px solid var(--color-grid);
  width: 100%;
}

.page-home .ph-preview-item {
  display: grid;
  grid-template-columns: 44px 1fr;
  grid-template-rows: auto auto;
  column-gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-grid);
  text-decoration: none;
  transition: background 0.25s ease, padding-left 0.25s ease;
}

.page-home .ph-preview-item:hover {
  background: var(--ph-gold-hover);
  padding-left: 12px;
}

.page-home .ph-preview-item:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
}

.page-home .ph-preview-item__index {
  grid-row: 1 / 3;
  font-family: var(--font-number);
  font-size: 0.875rem;
  color: var(--color-gold);
}

.page-home .ph-preview-item__label {
  font-size: 1.0625rem;
  color: var(--color-text-primary);
}

.page-home .ph-preview-item__note {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* ===== 版本更新提示 ===== */
.page-home .ph-version {
  padding: 72px 0;
  background: linear-gradient(180deg, transparent, rgba(10, 30, 60, 0.32) 40%, transparent 95%);
}

.page-home .ph-version__grid {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-home .ph-version__content {
  max-width: 680px;
}

.page-home .ph-version__subtitle {
  margin: 0 0 16px;
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-text-primary);
}

.page-home .ph-version p {
  margin: 0 0 16px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.page-home .ph-version__qa {
  padding: 14px 16px;
  border-left: 2px solid var(--color-purple);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--ph-purple-soft);
}

.page-home .ph-inline-link {
  display: inline-block;
  margin-top: 6px;
  color: var(--color-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 185, 106, 0.4);
  transition: border-bottom-color 0.25s ease;
}

.page-home .ph-inline-link:hover {
  border-bottom-color: var(--color-gold);
}

.page-home .ph-figure {
  margin: 0;
}

.page-home .ph-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--color-grid);
  border-radius: var(--radius-sm);
}

.page-home .ph-figure figcaption {
  margin-top: 10px;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* ===== 核心数据栏目 ===== */
.page-home .ph-data {
  padding: 72px 0;
}

.page-home .ph-data .section-heading__index,
.page-home .ph-archive .section-heading__index,
.page-home .ph-pathways .section-heading__index,
.page-home .ph-version .section-heading__index {
  margin: 0 0 8px;
  font-family: var(--font-number);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--color-gold);
  text-transform: uppercase;
}

.page-home .section-heading__title {
  margin: 0 0 18px;
  font-weight: 300;
  color: var(--color-text-primary);
}

.page-home .ph-data__intro {
  max-width: 720px;
  margin: 0 0 32px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.page-home .ph-data__grid {
  display: grid;
  gap: 16px;
  margin-bottom: 36px;
}

.page-home .ph-data-card {
  position: relative;
  padding: 24px;
  background: var(--ph-card-bg);
  border: 1px solid var(--color-grid);
  border-radius: var(--radius-md);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-home .ph-data-card:hover {
  border-color: rgba(232, 185, 106, 0.35);
  transform: translateY(-2px);
}

.page-home .ph-data-card__tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 10px;
  border: 1px solid rgba(123, 108, 246, 0.4);
  border-radius: 999px;
  font-size: 0.75rem;
  font-family: var(--font-number);
  letter-spacing: 0.08em;
  color: var(--color-purple);
}

.page-home .ph-data-card h3 {
  margin: 0 0 10px;
  font-size: 1.3125rem;
  font-weight: 500;
  color: var(--color-text-primary);
}

.page-home .ph-data-card p {
  margin: 0 0 18px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.page-home .ph-data__note {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 36px;
  padding: 14px 16px;
  border: 1px dashed var(--color-grid);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.page-home .ph-data__note-label {
  flex: none;
  margin-top: 3px;
  font-family: var(--font-number);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--color-gold);
}

/* ===== 版本档案 ===== */
.page-home .ph-archive {
  padding: 72px 0;
  background: linear-gradient(180deg, transparent, rgba(30, 27, 75, 0.28) 45%, transparent 100%);
}

.page-home .ph-archive__grid {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-home .ph-archive__content {
  max-width: 680px;
}

.page-home .ph-archive p {
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.page-home .ph-archive__list {
  list-style: none;
  margin: 24px 0;
  padding: 0;
  border-top: 1px solid var(--color-grid);
}

.page-home .ph-archive__list li {
  display: flex;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-grid);
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.page-home .ph-archive__list li span {
  flex: none;
  min-width: 44px;
  font-family: var(--font-number);
  font-weight: 600;
  color: var(--color-gold);
}

.page-home .ph-archive__list li em {
  font-style: normal;
  color: var(--color-text-primary);
}

/* ===== 站点内容路径 ===== */
.page-home .ph-pathways {
  padding: 72px 0;
}

.page-home .ph-pathways__intro {
  max-width: 640px;
  margin: 0 0 28px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.page-home .ph-pathways__list {
  border-top: 1px solid var(--color-grid);
}

.page-home .ph-pathway {
  display: grid;
  grid-template-columns: 56px 1fr;
  grid-template-rows: auto auto;
  column-gap: 16px;
  padding: 18px 8px;
  border-bottom: 1px solid var(--color-grid);
  text-decoration: none;
  transition: background 0.25s ease, padding-left 0.25s ease;
}

.page-home .ph-pathway:hover,
.page-home .ph-pathway:focus-visible {
  background: var(--ph-gold-hover);
  padding-left: 12px;
}

.page-home .ph-pathway:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
}

.page-home .ph-pathway__index {
  grid-row: 1 / 3;
  font-family: var(--font-number);
  font-size: 0.875rem;
  color: var(--color-gold);
}

.page-home .ph-pathway__name {
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-text-primary);
}

.page-home .ph-pathway__desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.page-home .ph-trust {
  margin-top: 36px;
  padding: 14px 16px;
  border-left: 2px solid var(--color-purple);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--ph-purple-soft);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* ===== 响应式布局 ===== */
@media (min-width: 768px) {
  .page-home .ph-hero__preview {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 32px;
  }
}

@media (min-width: 992px) {
  .page-home .ph-hero {
    padding-top: 96px;
  }

  .page-home .ph-hero__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 64px;
    align-items: center;
  }

  .page-home .ph-hero__preview {
    grid-template-columns: repeat(4, 1fr);
    column-gap: 24px;
    margin-top: 64px;
  }

  .page-home .ph-preview-item {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    padding: 20px 0;
  }

  .page-home .ph-preview-item__index {
    grid-row: auto;
    margin-bottom: 10px;
  }

  .page-home .ph-preview-item__note {
    margin-top: 6px;
  }

  .page-home .ph-version__grid,
  .page-home .ph-archive__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 56px;
  }

  .page-home .ph-version__content,
  .page-home .ph-archive__content {
    order: 1;
  }

  .page-home .ph-version__figure,
  .page-home .ph-archive__figure {
    order: 2;
  }
}

@media (min-width: 1100px) {
  .page-home .ph-data__grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .page-home .ph-data__figure {
    max-width: 1120px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home *,
  .page-home *::before,
  .page-home *::after {
    animation: none !important;
    transition: none !important;
  }
}