.page-home {
  --frame-border-width: 10px;
  --frame-corner-size: 28px;
  --card-offset: 24px;
  --accent-glow: 0 0 0 2px var(--clr-accent);
}

/* ===== 框景首屏 ===== */
.page-home .hero-frame {
  padding: var(--spacing-section) 0 2rem;
  position: relative;
}

.page-home .frame-viewport {
  position: relative;
  max-width: calc(var(--max-width) + var(--frame-border-width) * 2);
  margin: 0 auto;
  border: var(--frame-border-width) solid var(--clr-border);
  box-shadow: var(--shadow-strong), inset 0 0 0 2px rgba(255,255,255,0.06);
  overflow: hidden;
  min-height: 420px;
  background: var(--clr-primary);
}

.page-home .frame-bg-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.page-home .frame-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
  filter: saturate(0.85) contrast(1.1);
}

.page-home .frame-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg, rgba(27,77,62,0.78) 0%, rgba(27,77,62,0.52) 60%, rgba(27,77,62,0.30) 100%);
}

.page-home .frame-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 3rem 1.5rem;
  min-height: 420px;
  text-align: center;
  color: var(--clr-white);
}

.page-home .frame-context {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.35rem 1rem;
  border: 1px solid rgba(255,255,255,0.25);
  margin-bottom: 1.5rem;
  color: rgba(255,255,255,0.8);
}

.page-home .frame-title {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1;
  text-transform: uppercase;
  color: var(--clr-white);
  margin: 0 0 0.5rem;
  letter-spacing: 0.04em;
  text-shadow: 4px 4px 0 rgba(0,0,0,0.25);
  animation: frameTitleIn 0.9s cubic-bezier(0.16,1,0.3,1) both;
}

.page-home .frame-tagline {
  font-family: var(--font-body);
  font-size: 1.15rem;
  color: rgba(255,255,255,0.9);
  margin: 0 0 2rem;
  line-height: 1.5;
  max-width: 480px;
  animation: frameFadeIn 0.8s ease 0.3s both;
}

.page-home .frame-cta {
  animation: frameFadeIn 0.8s ease 0.5s both;
}

.page-home .frame-cta.btn-primary {
  background: var(--clr-accent);
  color: var(--clr-white);
  border: none;
  padding: 0.9rem 2.8rem;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  box-shadow: var(--shadow-accent);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
  display: inline-block;
}

.page-home .frame-cta.btn-primary:hover,
.page-home .frame-cta.btn-primary:focus-visible {
  transform: scale(1.04);
  box-shadow: 8px 8px 0 rgba(200,150,46,0.45);
}

/* 四角装饰 */
.page-home .frame-corner {
  position: absolute;
  z-index: 3;
  width: var(--frame-corner-size);
  height: var(--frame-corner-size);
  border-color: var(--clr-accent);
  border-style: solid;
}

.page-home .frame-corner--tl {
  top: -6px;
  left: -6px;
  border-width: 3px 0 0 3px;
}

.page-home .frame-corner--tr {
  top: -6px;
  right: -6px;
  border-width: 3px 3px 0 0;
}

.page-home .frame-corner--bl {
  bottom: -6px;
  left: -6px;
  border-width: 0 0 3px 3px;
}

.page-home .frame-corner--br {
  bottom: -6px;
  right: -6px;
  border-width: 0 3px 3px 0;
}

/* ===== 快捷入口 ===== */
.page-home .quick-entry {
  padding: var(--spacing-section) 0;
  background: var(--clr-gray-light);
  position: relative;
}

.page-home .quick-entry .container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.page-home .section__title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--clr-primary);
  margin: 0 0 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1.15;
}

.page-home .section__subtitle {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--clr-text);
  opacity: 0.75;
  margin: 0 0 2.5rem;
  line-height: 1.5;
}

.page-home .entry-cards {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.page-home .card-entry {
  display: flex;
  flex-direction: column;
  background: var(--clr-white);
  border: 3px solid var(--clr-border);
  box-shadow: var(--shadow-strong);
  text-decoration: none;
  color: var(--clr-text);
  transition: transform var(--transition-med), border-color var(--transition-med), box-shadow var(--transition-med);
  overflow: hidden;
  position: relative;
}

.page-home .card-entry:hover,
.page-home .card-entry:focus-visible {
  transform: scale(1.02);
  border-color: var(--clr-accent);
  box-shadow: 8px 8px 0 rgba(200,150,46,0.25);
}

.page-home .card-entry__img-wrap {
  width: 100%;
  height: 180px;
  overflow: hidden;
  background: var(--clr-primary);
}

.page-home .card-entry__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.page-home .card-entry:hover .card-entry__img {
  transform: scale(1.06);
}

.page-home .card-entry__body {
  padding: 1.25rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.page-home .card-entry__num {
  font-family: var(--font-heading);
  font-size: 2rem;
  line-height: 1;
  color: var(--clr-accent);
  opacity: 0.35;
  font-weight: 900;
  margin-bottom: 0.15rem;
}

.page-home .card-entry__title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--clr-primary);
  margin: 0 0 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

.page-home .card-entry__desc {
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--clr-text);
  opacity: 0.8;
  margin: 0 0 1rem;
  flex: 1;
}

.page-home .card-entry__tag {
  align-self: flex-start;
}

.page-home .tag {
  display: inline-block;
  background: var(--clr-accent);
  color: var(--clr-white);
  font-family: var(--font-heading);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.9rem;
  line-height: 1.2;
}

/* ===== 版本更新亮点 ===== */
.page-home .version-update {
  padding: var(--spacing-section) 0;
  background: var(--clr-white);
  position: relative;
}

.page-home .version-update .container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.page-home .update-frame {
  border: 4px solid var(--clr-border);
  padding: 2rem 1.5rem;
  position: relative;
  background: linear-gradient(135deg, var(--clr-gray-light) 0%, var(--clr-white) 100%);
}

.page-home .update-badge {
  display: inline-block;
  background: var(--clr-primary);
  color: var(--clr-white);
  font-family: var(--font-heading);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.3rem 1rem;
  position: absolute;
  top: -0.8rem;
  left: 1.5rem;
}

.page-home .update-title {
  margin-bottom: 1.75rem;
}

.page-home .update-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.page-home .update-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.5rem;
  background: var(--clr-white);
  border-left: 5px solid var(--clr-accent);
  box-shadow: 4px 4px 0 rgba(27,77,62,0.10);
}

.page-home .update-card__icon {
  color: var(--clr-primary);
  margin-bottom: 0.25rem;
  flex-shrink: 0;
}

.page-home .update-card__title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--clr-primary);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

.page-home .update-card__desc {
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--clr-text);
  opacity: 0.8;
  margin: 0;
}

/* ===== 最新动态 ===== */
.page-home .latest-news {
  padding: var(--spacing-section) 0;
  background: var(--clr-gray-light);
  position: relative;
}

.page-home .latest-news .container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.page-home .news-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.page-home .news-card {
  background: var(--clr-white);
  border: 3px solid var(--clr-border);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-med), border-color var(--transition-med), box-shadow var(--transition-med);
  box-shadow: var(--shadow-strong);
}

.page-home .news-card:hover,
.page-home .news-card:focus-within {
  border-color: var(--clr-accent);
  transform: translateY(-4px);
  box-shadow: 8px 8px 0 rgba(200,150,46,0.18);
}

.page-home .news-card__meta {
  margin-bottom: 0.75rem;
}

.page-home .news-card__tag {
  font-size: 0.65rem;
}

.page-home .news-card__title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 900;
  margin: 0 0 0.5rem;
  line-height: 1.2;
  color: var(--clr-primary);
}

.page-home .news-card__link {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.page-home .news-card__link::after {
  content: '';
  position: absolute;
  inset: 0;
}

.page-home .news-card {
  position: relative;
}

.page-home .news-card__link:hover,
.page-home .news-card__link:focus-visible {
  color: var(--clr-accent);
}

.page-home .news-card__excerpt {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--clr-text);
  opacity: 0.78;
  margin: 0 0 0.75rem;
  flex: 1;
}

.page-home .news-card__more {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--clr-accent);
  text-decoration: none;
  align-self: flex-start;
  position: relative;
  z-index: 1;
  transition: color var(--transition-fast);
}

.page-home .news-card__more:hover,
.page-home .news-card__more:focus-visible {
  color: var(--clr-primary);
}

/* ===== 动画 ===== */
@keyframes frameTitleIn {
  0% {
    opacity: 0;
    transform: translateY(30px) scale(0.96);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes frameFadeIn {
  0% {
    opacity: 0;
    transform: translateY(16px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== 桌面端 ≥768px ===== */
@media (min-width: 768px) {
  .page-home .hero-frame {
    padding: calc(var(--spacing-section) + 0.5rem) 0 3rem;
  }

  .page-home .frame-viewport {
    min-height: 520px;
  }

  .page-home .frame-content {
    min-height: 520px;
    padding: 4rem 3rem;
  }

  .page-home .frame-title {
    font-size: 5.5rem;
  }

  .page-home .frame-tagline {
    font-size: 1.35rem;
  }

  .page-home .frame-context {
    font-size: 0.8rem;
    margin-bottom: 1.75rem;
  }

  .page-home .entry-cards {
    flex-direction: row;
    align-items: flex-start;
    gap: 2rem;
  }

  .page-home .card-entry {
    flex: 1;
    flex-direction: column;
  }

  .page-home .card-entry--1 {
    transform: translateY(0);
  }

  .page-home .card-entry--2 {
    transform: translateY(var(--card-offset));
  }

  .page-home .card-entry--3 {
    transform: translateY(calc(var(--card-offset) * 0.4));
  }

  .page-home .card-entry:hover,
  .page-home .card-entry:focus-visible {
    transform: scale(1.03) translateY(calc(var(--card-offset) * -0.06));
  }

  .page-home .card-entry__img-wrap {
    height: 200px;
  }

  .page-home .update-grid {
    flex-direction: row;
    gap: 2rem;
  }

  .page-home .update-card {
    flex: 1;
    flex-direction: row;
    align-items: flex-start;
    padding: 2rem;
  }

  .page-home .update-card__icon {
    width: 56px;
    height: 56px;
    margin-bottom: 0;
    margin-right: 1rem;
  }

  .page-home .update-card__title {
    font-size: 1.25rem;
  }

  .page-home .update-frame {
    padding: 2.5rem 2.5rem 2rem;
  }

  .page-home .news-grid {
    flex-direction: row;
    gap: 1.75rem;
  }

  .page-home .news-card {
    flex: 1;
    padding: 1.75rem;
  }

  .page-home .news-card__title {
    font-size: 1.3rem;
  }

  .page-home .section__title {
    font-size: 2.8rem;
  }

  .page-home .section__subtitle {
    font-size: 1.05rem;
    margin-bottom: 3rem;
  }
}

/* ===== 大桌面端 ≥1024px ===== */
@media (min-width: 1024px) {
  .page-home .frame-viewport {
    min-height: 580px;
  }

  .page-home .frame-content {
    min-height: 580px;
    padding: 5rem 4rem;
  }

  .page-home .frame-title {
    font-size: 6.5rem;
  }

  .page-home .frame-tagline {
    font-size: 1.5rem;
  }

  .page-home .card-entry--2 {
    transform: translateY(calc(var(--card-offset) * 1.2));
  }

  .page-home .card-entry--3 {
    transform: translateY(calc(var(--card-offset) * 0.6));
  }
}