.page-home {
  --ph-cut: 20px;
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-home .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

.page-home .breadcrumb a {
  color: var(--gold);
  text-decoration: none;
}

.page-home .breadcrumb a:hover {
  color: var(--cyan);
}

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

/* ---------- 首屏框景 ---------- */
.page-home .ph-hero {
  padding-top: 26px;
}

.page-home .ph-frame {
  position: relative;
  padding: 30px 18px 26px;
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 130% at 90% 6%, rgba(91, 63, 209, 0.30), transparent 62%),
    radial-gradient(90% 100% at 4% 96%, rgba(232, 180, 74, 0.10), transparent 60%),
    linear-gradient(180deg, rgba(26, 29, 39, 0.94), rgba(13, 14, 19, 0.98));
  box-shadow: var(--shadow-1);
  clip-path: polygon(0 0, calc(100% - var(--ph-cut)) 0, 100% var(--ph-cut), 100% 100%, var(--ph-cut) 100%, 0 calc(100% - var(--ph-cut)));
  overflow: hidden;
}

.page-home .ph-frame::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 9px;
  background: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 26px);
  pointer-events: none;
}

.page-home .ph-frame::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0.55;
  pointer-events: none;
}

.page-home .ph-hero-grid {
  display: grid;
  gap: 26px;
}

.page-home .ph-title {
  margin: 10px 0 16px;
  font-size: clamp(32px, 7.4vw, 68px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-home .ph-title em {
  font-style: normal;
  color: var(--gold);
}

.page-home .ph-lead {
  margin: 0 0 22px;
  max-width: 36em;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-dim);
}

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

.page-home .ph-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line-soft);
  background: var(--line-soft);
}

.page-home .ph-facts li {
  padding: 14px 12px;
  background: rgba(13, 14, 19, 0.86);
}

.page-home .ph-fact-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.1;
  color: var(--gold);
}

.page-home .ph-fact-lab {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.page-home .ph-shear {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink);
  overflow: hidden;
  box-shadow: var(--shadow-2);
}

.page-home .ph-shear img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-home .ph-shear-cap {
  padding: 14px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
  border-top: 1px solid var(--line-soft);
  background: var(--panel);
}

/* ---------- 资源下载速览 ---------- */
.page-home .ph-downloads {
  position: relative;
}

.page-home .ph-dl {
  display: grid;
  gap: 26px;
  align-items: start;
}

.page-home .ph-dl-figure {
  margin: 0;
  border: 1px solid var(--line-soft);
}

.page-home .ph-dl-body .prose {
  color: var(--text);
}

.page-home .ph-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-home .ph-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 22px 0 18px;
}

.page-home .ph-stat {
  padding: 16px 14px;
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(26, 29, 39, 0.86), rgba(13, 14, 19, 0.7));
}

.page-home .ph-stat .stat-value {
  color: var(--gold);
  font-family: var(--font-mono);
}

.page-home .ph-stat .stat-label {
  color: var(--text-dim);
}

.page-home .ph-note {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-dim);
  border-left: 2px solid var(--orange);
  padding-left: 12px;
}

/* ---------- 栏目地图 ---------- */
.page-home .ph-map-section .section-head {
  margin-bottom: 18px;
}

.page-home .ph-lead-cream {
  max-width: 34em;
  color: var(--text-brown-dim);
}

.page-home .ph-ruler {
  display: block;
  width: 100%;
  height: auto;
  margin: 4px 0 24px;
  color: var(--gold-deep);
  opacity: 0.8;
}

.page-home .ph-map {
  display: grid;
  gap: 14px;
}

.page-home .ph-node {
  display: grid;
  gap: 6px;
  padding: 18px 16px 16px;
  border: 1px solid var(--line-cream);
  background: rgba(255, 255, 255, 0.42);
  color: var(--text-brown);
  text-decoration: none;
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-home .ph-node:hover,
.page-home .ph-node:focus-visible {
  transform: translateY(-4px);
  border-color: var(--gold-deep);
  background: rgba(255, 255, 255, 0.72);
}

.page-home .ph-node-idx {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 22px;
  line-height: 1;
  color: var(--gold-deep);
  letter-spacing: 0.02em;
}

.page-home .ph-node-name {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.page-home .ph-node-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-brown-dim);
}

.page-home .ph-node-go {
  margin-top: 4px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--violet);
}

/* ---------- 大屏端版本 ---------- */
.page-home .ph-screen-grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-home .ph-version {
  display: block;
  margin: 8px 0 12px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(76px, 20vw, 160px);
  line-height: 0.82;
  letter-spacing: -0.05em;
  color: var(--gold);
}

.page-home .ph-version small {
  display: block;
  margin-top: 14px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.24em;
  color: var(--text-dim);
}

.page-home .ph-screen-title {
  margin: 0 0 14px;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.24;
}

.page-home .ph-prose-dim {
  color: var(--text-dim);
}

.page-home .ph-screen-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 24px 0;
  border: 1px solid var(--line-soft);
  background: var(--line-soft);
}

.page-home .ph-screen-stat {
  padding: 16px 14px;
  background: rgba(13, 14, 19, 0.88);
}

.page-home .ph-screen-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  color: var(--cyan);
}

.page-home .ph-screen-lab {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.page-home .ph-screen-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}

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

.page-home .ph-screen-figure figcaption {
  padding: 13px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 收藏理由 ---------- */
.page-home .ph-save {
  display: grid;
  gap: 22px;
  align-items: start;
}

.page-home .ph-save-figure {
  margin: 0;
  border: 1px solid var(--line-cream);
  background: rgba(255, 255, 255, 0.5);
}

.page-home .ph-save-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-home .ph-save-figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-brown-dim);
  border-top: 1px solid var(--line-cream);
}

.page-home .ph-save-list {
  display: grid;
  gap: 16px;
}

.page-home .ph-save-card {
  padding: 20px 18px;
  border: 1px solid var(--line-cream);
  background: rgba(255, 255, 255, 0.55);
  color: var(--text-brown);
}

.page-home .ph-save-card h3 {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text-brown);
}

.page-home .ph-save-card p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-brown-dim);
}

.page-home .ph-save-card .link-arrow {
  color: var(--violet);
  font-weight: 700;
  text-decoration: none;
}

.page-home .ph-save-card .link-arrow:hover {
  color: var(--gold-deep);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .ph-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-home .ph-frame {
    padding: 36px 30px 32px;
  }
}

@media (min-width: 900px) {
  .page-home .ph-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 44px;
    align-items: center;
  }

  .page-home .ph-shear {
    clip-path: polygon(12% 0, 100% 0, 100% 100%, 0 100%);
  }

  .page-home .ph-dl {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 44px;
  }

  .page-home .ph-screen-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
  }

  .page-home .ph-save {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 34px;
  }

  .page-home .ph-save-list {
    gap: 20px;
  }

  .page-home .ph-save-card:nth-child(2) {
    margin-left: 26px;
  }

  .page-home .ph-save-card:nth-child(3) {
    margin-left: 12px;
  }
}

@media (min-width: 1100px) {
  .page-home .ph-map {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .ph-frame {
    padding: 44px 40px 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .ph-node,
  .page-home .ph-save-card {
    transition: none;
  }

  .page-home .ph-node:hover,
  .page-home .ph-node:focus-visible {
    transform: none;
  }
}