.page-home {
  --home-section-pad: clamp(3.5rem, 8vw, 7rem);
  --home-card-pad: 1.25rem;
  --home-slant: 28px;
  background: var(--c-space);
  color: var(--c-ivory);
  overflow-x: hidden;
}

.page-home img {
  max-width: 100%;
  height: auto;
}

.page-home__wrap,
.page-home__help-grid,
.page-home__rules-inner {
  width: min(100%, var(--container));
  margin-inline: auto;
}

.page-home__section-head {
  display: grid;
  gap: 0.6rem;
  max-width: 900px;
}

.page-home__section-head .section-lead {
  font-family: var(--font-body);
  font-size: clamp(0.9375rem, 2vw, 1.0625rem);
  line-height: 1.75;
  color: var(--c-slate);
  margin: 0;
}

/* ===== 框景首屏 ===== */
.page-home__hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: calc(var(--home-section-pad) + 2.5rem) 1.25rem 4rem;
  overflow: hidden;
}

.page-home__hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-home__hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-home__hero-scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(11, 31, 58, 0.55), rgba(7, 20, 38, 0.92));
}

.page-home__hero-frame {
  position: relative;
  z-index: 2;
  width: min(100%, 920px);
  padding: 2.25rem 1.25rem 2rem;
  background: rgba(11, 31, 58, 0.7);
  border: 1px solid rgba(176, 38, 255, 0.45);
  box-shadow: 0 0 0 1px rgba(7, 20, 38, 0.4), 0 24px 80px rgba(7, 20, 38, 0.7);
  backdrop-filter: blur(8px);
}

.page-home__hero-content {
  display: grid;
  gap: 1.25rem;
  justify-items: center;
  text-align: center;
}

.page-home__hero-content h1 {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 5vw, 3.6rem);
  line-height: 1.15;
  letter-spacing: 0.02em;
  margin: 0;
}

.page-home__hero-content .lead {
  max-width: 40em;
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(0.9375rem, 2vw, 1.125rem);
  line-height: 1.7;
  color: var(--c-slate);
}

.page-home__hero-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 0.9rem;
}

.page-home__hero-nav a {
  font-family: var(--font-accent);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--c-ivory);
  opacity: 0.78;
  text-decoration: none;
  border-bottom: 1px solid rgba(176, 38, 255, 0.55);
  padding-bottom: 0.125rem;
  transition: opacity 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-home__hero-nav a:hover,
.page-home__hero-nav a:focus-visible {
  color: var(--c-purple);
  opacity: 1;
  border-color: var(--c-purple);
}

.page-home__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.page-home__hero-stats {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 1rem 2rem;
  margin-top: 0.5rem;
}

.page-home__stat {
  display: grid;
  gap: 0.25rem;
}

.page-home__stat-num {
  font-family: var(--font-accent);
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1;
  color: var(--c-ivory);
}

.page-home__stat-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-slate);
}

/* ===== 一页定位·全部栏目索引 ===== */
.page-home__categories {
  padding: var(--home-section-pad) 1.25rem;
  background: var(--c-space);
}

.page-home__catalog-banner {
  display: grid;
  align-items: center;
  gap: 1.25rem;
  margin: 2rem 0 2.5rem;
  padding: 1rem;
  background: rgba(46, 26, 71, 0.36);
  border: 1px solid rgba(176, 38, 255, 0.28);
  border-radius: var(--radius-xl);
}

.page-home__catalog-banner img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(245, 240, 230, 0.12);
}

.page-home__catalog-banner-copy {
  display: grid;
  gap: 0.6rem;
  justify-items: start;
}

.page-home__catalog-banner-copy h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.3;
  margin: 0;
}

.page-home__catalog-banner-copy p {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-slate);
  margin: 0;
}

.page-home__cat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-home__cat-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-height: 180px;
  padding: var(--home-card-pad);
  background: rgba(245, 240, 230, 0.04);
  border: 1px solid rgba(245, 240, 230, 0.08);
  border-radius: var(--radius-lg);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-home__cat-card:hover,
.page-home__cat-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--c-purple);
  box-shadow: 0 0 0 1px rgba(176, 38, 255, 0.3), 0 20px 44px rgba(7, 20, 38, 0.55);
}

.page-home__cat-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.page-home__cat-num {
  font-family: var(--font-accent);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--c-gold);
}

.page-home__cat-card .card__title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.25;
  margin: 0.25rem 0 0;
}

.page-home__cat-card .card__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--c-slate);
}

.page-home__cat-card .card__meta {
  margin-top: auto;
  padding-top: 0.75rem;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--c-slate);
}

.page-home__cat-link {
  color: inherit;
  text-decoration: none;
}

.page-home__cat-link:hover,
.page-home__cat-link:focus-visible {
  color: var(--c-ivory);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

/* ===== 版本记录·常态维护 ===== */
.page-home__versions {
  padding: var(--home-section-pad) 1.25rem;
  background: var(--c-teal);
}

.page-home__versions-layout {
  display: grid;
  gap: 1.75rem;
  align-items: stretch;
  margin-top: 2rem;
}

.page-home__version-score {
  display: grid;
  align-content: center;
  gap: 0.75rem;
  padding: 3rem 1.5rem;
  background: linear-gradient(135deg, rgba(176, 38, 255, 0.18), rgba(11, 31, 58, 0.42));
  clip-path: polygon(0 var(--home-slant), 100% 0, 100% calc(100% - var(--home-slant)), 0 100%);
}

.page-home__version-number {
  font-family: var(--font-display);
  font-size: clamp(4.5rem, 11vw, 7rem);
  font-weight: 700;
  line-height: 0.9;
  color: var(--c-ivory);
}

.page-home__version-label {
  font-family: var(--font-accent);
  font-size: 0.875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin: 0;
}

.page-home__version-caption,
.page-home__version-meta {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-slate);
  margin: 0;
  max-width: 32em;
}

.page-home__version-meta {
  padding-top: 0.5rem;
  border-top: 1px solid rgba(245, 240, 230, 0.1);
}

.page-home__version-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(245, 240, 230, 0.12);
}

.page-home__versions-timeline {
  margin-top: 2.5rem;
}

.page-home__timeline {
  display: grid;
  gap: 0.75rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-home__timeline .timeline__item {
  position: relative;
  padding: 1rem 1.25rem 1rem 2.5rem;
  background: rgba(7, 20, 38, 0.26);
  border-radius: var(--radius-lg);
}

.page-home__timeline .timeline__item::before {
  content: '';
  position: absolute;
  left: 0.75rem;
  top: 1.375rem;
  width: 0.5rem;
  height: 0.5rem;
  transform: rotate(45deg);
  background: var(--c-purple);
  box-shadow: 0 0 0 4px rgba(176, 38, 255, 0.18), 0 0 12px rgba(176, 38, 255, 0.4);
}

.page-home__timeline .timeline__item::after {
  content: '';
  position: absolute;
  left: 0.9375rem;
  top: 2.5rem;
  bottom: -0.75rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-purple), transparent);
}

.page-home__timeline .timeline__item:last-child::after {
  display: none;
}

.page-home__timeline .timeline__date {
  display: inline-block;
  font-family: var(--font-accent);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-home__timeline h3 {
  margin: 0.25rem 0 0.25rem;
  font-family: var(--font-display);
  font-size: 1.125rem;
  line-height: 1.35;
  color: var(--c-ivory);
}

.page-home__timeline p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--c-slate);
}

.page-home__brand-note {
  margin-top: 2.25rem;
  padding: 1rem 1.25rem;
  border-left: 3px solid var(--c-gold);
  background: rgba(7, 20, 38, 0.22);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.page-home__brand-note p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--c-slate);
}

.page-home__textlink {
  color: var(--c-gold);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.page-home__textlink:hover,
.page-home__textlink:focus-visible {
  color: var(--c-ivory);
}

/* ===== 帮助文档·第三栏换机重登 ===== */
.page-home__help {
  padding: var(--home-section-pad) 1.25rem;
  background: var(--c-indigo);
}

.page-home__help-grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.page-home__help-copy {
  display: grid;
  gap: 1.25rem;
  justify-items: start;
}

.page-home__help-preview {
  width: 100%;
  padding: 1.5rem;
  background: rgba(11, 31, 58, 0.42);
  border: 1px solid rgba(176, 38, 255, 0.3);
  border-radius: var(--radius-lg);
}

.page-home__help-step-label {
  font-family: var(--font-accent);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin: 0 0 0.5rem;
}

.page-home__help-preview .lead {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--c-ivory);
}

.page-home__help-visual img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(245, 240, 230, 0.12);
}

/* ===== 活动规则·先读再玩 ===== */
.page-home__rules {
  padding: var(--home-section-pad) 1.25rem;
  background: var(--c-wine);
}

.page-home__rules-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}

.page-home__rules-steps {
  display: grid;
  gap: 0.5rem;
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.page-home__rules-note {
  display: grid;
  align-content: start;
  gap: 0.75rem;
  padding: 1.5rem;
  background: rgba(7, 20, 38, 0.32);
  border: 1px solid rgba(212, 175, 55, 0.22);
  border-radius: var(--radius-lg);
}

.page-home__rules-note h3 {
  font-family: var(--font-display);
  font-size: 1.375rem;
  margin: 0;
}

.page-home__rules-note p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--c-slate);
}

/* ===== 响应式增强 ===== */
@media (min-width: 560px) {
  .page-home__cat-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-home__catalog-banner {
    grid-template-columns: 220px 1fr;
  }
}

@media (min-width: 860px) {
  .page-home__catalog-banner {
    grid-template-columns: minmax(280px, 0.9fr) 1.1fr;
    gap: 2rem;
    padding: 1.25rem;
  }

  .page-home__versions-layout {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 3rem;
  }

  .page-home__help-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3.5rem;
  }

  .page-home__rules-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2.5rem;
  }
}

@media (min-width: 960px) {
  .page-home__cat-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 479px) {
  .page-home__hero-stats {
    grid-template-columns: 1fr;
    gap: 0.75rem;
    justify-items: center;
  }

  .page-home__version-score {
    padding: 2.25rem 1.25rem;
    --home-slant: 20px;
  }
}