/* ===== 首页专属样式 .page-home ===== */
.page-home {
  --ph-hero-min-h: 100vh;
  --ph-card-radius: 12px;
  --ph-transition-speed: 0.4s;
  --ph-gold-glow: 0 0 20px rgba(244, 162, 97, 0.3);
  --ph-silver-glow: 0 0 16px rgba(229, 229, 229, 0.25);
  --ph-bronze-glow: 0 0 14px rgba(205, 127, 50, 0.2);
  display: flex;
  flex-direction: column;
  background-color: var(--color-dark, #0B1D3A);
  color: var(--color-light, #F8F9FA);
}

/* 首屏 Hero */
.page-home .ph-hero {
  position: relative;
  min-height: var(--ph-hero-min-h);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--color-dark, #0B1D3A);
}
.page-home .ph-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-home .ph-hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
  display: block;
}
.page-home .ph-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 29, 58, 0.88) 0%, rgba(11, 29, 58, 0.60) 50%, rgba(230, 57, 70, 0.25) 100%);
  z-index: 1;
}
.page-home .ph-hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding-top: 120px;
  padding-bottom: 80px;
  width: 100%;
}
.page-home .ph-hero__label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
}
.page-home .ph-hero__num {
  font-family: var(--font-heading, 'Montserrat Black', sans-serif);
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--color-red, #E63946);
  line-height: 1;
  letter-spacing: -0.02em;
  opacity: 0.8;
}
.page-home .ph-hero__tagline {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.95rem;
  color: var(--color-gold, #F4A261);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-left: 2px solid var(--color-gold, #F4A261);
  padding-left: 16px;
  opacity: 0.85;
}
.page-home .ph-hero__title {
  font-family: var(--font-heading, 'Montserrat Black', sans-serif);
  font-size: clamp(2.8rem, 10vw, 6.5rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 16px;
  text-shadow: 0 4px 40px rgba(230, 57, 70, 0.25);
}
.page-home .ph-hero__desc {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: rgba(255, 255, 255, 0.75);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.6;
}
.page-home .ph-hero__speedline {
  position: absolute;
  bottom: 60px;
  left: 0;
  right: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.5;
}
.page-home .ph-hero__scroll-hint {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: ph-scroll-bounce 2.5s ease-in-out infinite;
}
@keyframes ph-scroll-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.8; }
  50% { transform: translateX(-50%) translateY(12px); opacity: 0.4; }
}
.page-home .ph-hero__scroll-line {
  width: 2px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-red, #E63946), transparent);
  border-radius: 2px;
}
.page-home .ph-hero__scroll-text {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* 章节预览 */
.page-home .ph-preview {
  padding: 80px 0 60px;
  background-color: var(--color-light, #F8F9FA);
  position: relative;
}
.page-home .ph-preview::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-red, #E63946), var(--color-blue, #1D3557), var(--color-gold, #F4A261));
  opacity: 0.6;
}
.page-home .ph-preview__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 48px;
}
.page-home .ph-preview__num {
  font-family: var(--font-heading, 'Montserrat Black', sans-serif);
  font-size: 4rem;
  font-weight: 900;
  color: var(--color-red, #E63946);
  opacity: 0.12;
  line-height: 1;
  pointer-events: none;
  user-select: none;
}
.page-home .ph-preview__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 40px;
}
.page-home .ph-preview__card {
  display: flex;
  align-items: stretch;
  text-decoration: none;
  background: #fff;
  border-radius: var(--ph-card-radius);
  overflow: hidden;
  box-shadow: var(--shadow-card, 0 4px 20px rgba(0,0,0,0.08));
  transition: transform var(--ph-transition-speed) ease, box-shadow var(--ph-transition-speed) ease;
  position: relative;
  border-left: 4px solid var(--color-red, #E63946);
}
.page-home .ph-preview__card:hover {
  transform: translateX(8px) translateY(-4px);
  box-shadow: var(--shadow-float, 0 12px 40px rgba(0,0,0,0.12));
}
.page-home .ph-preview__card-num {
  font-family: var(--font-heading, 'Montserrat Black', sans-serif);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--color-blue, #1D3557);
  opacity: 0.15;
  writing-mode: vertical-rl;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 8px;
  min-width: 48px;
  line-height: 1;
  background: rgba(29, 53, 87, 0.04);
}
.page-home .ph-preview__card-body {
  padding: 20px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.page-home .ph-preview__card-title {
  font-family: var(--font-heading, 'Montserrat Black', sans-serif);
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--color-text, #2C3E50);
  margin: 0 0 6px;
  line-height: 1.3;
}
.page-home .ph-preview__card-desc {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.9rem;
  color: #6c7a8d;
  margin: 0;
  line-height: 1.5;
}
.page-home .ph-preview__card-line {
  width: 4px;
  background: linear-gradient(to bottom, var(--color-red, #E63946), var(--color-gold, #F4A261));
  flex-shrink: 0;
  opacity: 0.3;
}
.page-home .ph-preview__filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.page-home .ph-preview__filter-btn {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.8rem;
  padding: 8px 20px;
  border: 1px solid var(--color-silver, #E5E5E5);
  border-radius: 100px;
  background: #fff;
  color: var(--color-text, #2C3E50);
  cursor: pointer;
  transition: all var(--ph-transition-speed) ease;
  letter-spacing: 0.04em;
}
.page-home .ph-preview__filter-btn:hover {
  border-color: var(--color-red, #E63946);
  color: var(--color-red, #E63946);
}
.page-home .ph-preview__filter-btn.is-active {
  background: var(--color-red, #E63946);
  color: #fff;
  border-color: var(--color-red, #E63946);
}

/* 实时积分榜预览 */
.page-home .ph-leaderboard {
  padding: 80px 0;
  background: linear-gradient(160deg, var(--color-dark, #0B1D3A) 0%, #132a4a 60%, var(--color-dark, #0B1D3A) 100%);
  position: relative;
}
.page-home .ph-leaderboard::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold, #F4A261), var(--color-red, #E63946), var(--color-blue, #1D3557));
  opacity: 0.5;
}
.page-home .ph-leaderboard__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 20px;
}
.page-home .ph-leaderboard .section-title {
  color: #fff;
}
.page-home .ph-leaderboard__num {
  font-family: var(--font-heading, 'Montserrat Black', sans-serif);
  font-size: 4rem;
  font-weight: 900;
  color: var(--color-gold, #F4A261);
  opacity: 0.10;
  line-height: 1;
  pointer-events: none;
  user-select: none;
}
.page-home .ph-leaderboard__intro {
  margin-bottom: 48px;
  max-width: 640px;
}
.page-home .ph-leaderboard__desc {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  margin: 0;
}
.page-home .ph-leaderboard__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 48px;
}
.page-home .ph-leaderboard__card {
  position: relative;
  border-radius: var(--ph-card-radius);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: transform var(--ph-transition-speed) ease, box-shadow var(--ph-transition-speed) ease;
  cursor: pointer;
}
.page-home .ph-leaderboard__card:hover {
  transform: translateY(-6px);
}
.page-home .ph-leaderboard__card--gold {
  border-color: rgba(244, 162, 97, 0.3);
  box-shadow: var(--ph-gold-glow);
}
.page-home .ph-leaderboard__card--gold:hover {
  box-shadow: 0 0 30px rgba(244, 162, 97, 0.4);
}
.page-home .ph-leaderboard__card--silver {
  border-color: rgba(229, 229, 229, 0.2);
  box-shadow: var(--ph-silver-glow);
}
.page-home .ph-leaderboard__card--silver:hover {
  box-shadow: 0 0 24px rgba(229, 229, 229, 0.35);
}
.page-home .ph-leaderboard__card--bronze {
  border-color: rgba(205, 127, 50, 0.2);
  box-shadow: var(--ph-bronze-glow);
}
.page-home .ph-leaderboard__card--bronze:hover {
  box-shadow: 0 0 22px rgba(205, 127, 50, 0.35);
}
.page-home .ph-leaderboard__medal {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  animation: ph-medal-pulse 2.5s ease-in-out infinite;
}
@keyframes ph-medal-pulse {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.08); opacity: 1; }
}
.page-home .ph-leaderboard__card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  opacity: 0.7;
  transition: opacity var(--ph-transition-speed) ease;
}
.page-home .ph-leaderboard__card:hover .ph-leaderboard__card-img {
  opacity: 0.9;
}
.page-home .ph-leaderboard__card-info {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.page-home .ph-leaderboard__card-tag {
  font-size: 0.75rem;
}
.page-home .ph-leaderboard__card-score {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-gold, #F4A261);
  letter-spacing: 0.02em;
}
.page-home .ph-leaderboard__cta {
  text-align: center;
}

/* 过渡章节 */
.page-home .ph-transition {
  padding: 0;
  background-color: var(--color-dark, #0B1D3A);
}
.page-home .ph-transition__inner {
  position: relative;
  overflow: hidden;
  border-radius: 0;
}
.page-home .ph-transition__img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  display: block;
  opacity: 0.35;
}
.page-home .ph-transition__text {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: rgba(11, 29, 58, 0.55);
}
.page-home .ph-transition__label {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.85rem;
  color: var(--color-gold, #F4A261);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-bottom: 2px solid var(--color-gold, #F4A261);
  padding-bottom: 8px;
}
.page-home .ph-transition__strong {
  font-family: var(--font-heading, 'Montserrat Black', sans-serif);
  font-size: clamp(1.2rem, 4vw, 2rem);
  color: #fff;
  text-align: center;
  line-height: 1.3;
  letter-spacing: 0.03em;
}

/* 收藏清单入口 */
.page-home .ph-collection {
  padding: 80px 0;
  background-color: var(--color-light, #F8F9FA);
  position: relative;
}
.page-home .ph-collection::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-blue, #1D3557), var(--color-red, #E63946));
  opacity: 0.3;
}
.page-home .ph-collection__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 20px;
}
.page-home .ph-collection__num {
  font-family: var(--font-heading, 'Montserrat Black', sans-serif);
  font-size: 4rem;
  font-weight: 900;
  color: var(--color-blue, #1D3557);
  opacity: 0.10;
  line-height: 1;
  pointer-events: none;
  user-select: none;
}
.page-home .ph-collection__intro {
  margin-bottom: 40px;
  max-width: 640px;
}
.page-home .ph-collection__desc {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 1.05rem;
  color: var(--color-text, #2C3E50);
  line-height: 1.7;
  margin: 0;
}
.page-home .ph-collection__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 48px;
}
.page-home .ph-collection__card {
  position: relative;
  border-radius: var(--ph-card-radius);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-card, 0 4px 20px rgba(0,0,0,0.08));
  transition: transform var(--ph-transition-speed) ease, box-shadow var(--ph-transition-speed) ease;
  cursor: grab;
  border: 1px solid rgba(0, 0, 0, 0.04);
}
.page-home .ph-collection__card:active {
  cursor: grabbing;
}
.page-home .ph-collection__card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-float, 0 12px 40px rgba(0,0,0,0.12));
}
.page-home .ph-collection__card-bg {
  position: relative;
  height: 180px;
  overflow: hidden;
  background: var(--color-dark, #0B1D3A);
}
.page-home .ph-collection__card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.55;
  transition: opacity var(--ph-transition-speed) ease;
}
.page-home .ph-collection__card:hover .ph-collection__card-img {
  opacity: 0.75;
}
.page-home .ph-collection__card-particles {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 50%, rgba(244, 162, 97, 0.15) 0%, transparent 60%),
                    radial-gradient(circle at 80% 20%, rgba(230, 57, 70, 0.1) 0%, transparent 50%),
                    radial-gradient(circle at 50% 80%, rgba(29, 53, 87, 0.2) 0%, transparent 50%);
  pointer-events: none;
}
.page-home .ph-collection__card-body {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.page-home .ph-collection__card-tag {
  align-self: flex-start;
  font-size: 0.7rem;
}
.page-home .ph-collection__card-title {
  font-family: var(--font-heading, 'Montserrat Black', sans-serif);
  font-size: 1rem;
  font-weight: 900;
  color: var(--color-text, #2C3E50);
  line-height: 1.3;
}
.page-home .ph-collection__card-countdown {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.85rem;
  color: var(--color-red, #E63946);
  letter-spacing: 0.03em;
}
.page-home .ph-collection__card-drag {
  position: absolute;
  bottom: 12px;
  right: 12px;
  opacity: 0.3;
  transition: opacity var(--ph-transition-speed) ease;
}
.page-home .ph-collection__card:hover .ph-collection__card-drag {
  opacity: 0.7;
}
.page-home .ph-collection__cta {
  text-align: center;
}

/* 底部CTA */
.page-home .ph-cta {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--color-dark, #0B1D3A) 0%, #1a2f4e 100%);
  position: relative;
  overflow: hidden;
}
.page-home .ph-cta__speedline {
  position: absolute;
  top: 30px;
  left: 0;
  right: 0;
  pointer-events: none;
  opacity: 0.3;
}
.page-home .ph-cta__inner {
  text-align: center;
  position: relative;
  z-index: 1;
}
.page-home .ph-cta__title {
  font-family: var(--font-heading, 'Montserrat Black', sans-serif);
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 900;
  color: #fff;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}
.page-home .ph-cta__desc {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.65);
  margin: 0 0 36px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}
.page-home .ph-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

/* 按钮样式（页面专属微调） */
.page-home .btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 36px;
  font-family: var(--font-heading, 'Montserrat Black', sans-serif);
  font-size: 0.95rem;
  font-weight: 900;
  color: #fff;
  background: var(--color-red, #E63946);
  border: 2px solid var(--color-red, #E63946);
  border-radius: 8px;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: all var(--ph-transition-speed) ease;
  cursor: pointer;
}
.page-home .btn-primary:hover {
  background: transparent;
  color: var(--color-red, #E63946);
  box-shadow: 0 0 24px rgba(230, 57, 70, 0.3);
}
.page-home .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 36px;
  font-family: var(--font-heading, 'Montserrat Black', sans-serif);
  font-size: 0.95rem;
  font-weight: 900;
  color: var(--color-blue, #1D3557);
  background: transparent;
  border: 2px solid var(--color-blue, #1D3557);
  border-radius: 8px;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: all var(--ph-transition-speed) ease;
  cursor: pointer;
}
.page-home .btn-secondary:hover {
  background: var(--color-blue, #1D3557);
  color: #fff;
  box-shadow: 0 0 20px rgba(29, 53, 87, 0.25);
}

/* 标签样式 */
.page-home .tag {
  display: inline-block;
  padding: 4px 14px;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-gold, #F4A261);
  background: rgba(244, 162, 97, 0.12);
  border: 1px solid rgba(244, 162, 97, 0.25);
  border-radius: 100px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ===== 响应式 ===== */
@media (max-width: 767px) {
  .page-home .ph-hero__content {
    padding-top: 80px;
    padding-bottom: 60px;
  }
  .page-home .ph-hero__num {
    font-size: 2.5rem;
  }
  .page-home .ph-hero__title {
    font-size: clamp(2.2rem, 12vw, 3.5rem);
  }
  .page-home .ph-preview,
  .page-home .ph-leaderboard,
  .page-home .ph-collection,
  .page-home .ph-cta {
    padding: 48px 0;
  }
  .page-home .ph-preview__header,
  .page-home .ph-leaderboard__header,
  .page-home .ph-collection__header {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .page-home .ph-preview__num,
  .page-home .ph-leaderboard__num,
  .page-home .ph-collection__num {
    font-size: 2.5rem;
    align-self: flex-end;
  }
  .page-home .ph-preview__grid {
    gap: 14px;
  }
  .page-home .ph-preview__card-num {
    font-size: 1.5rem;
    min-width: 36px;
    padding: 12px 6px;
  }
  .page-home .ph-preview__card-body {
    padding: 14px 16px;
  }
  .page-home .ph-preview__card-title {
    font-size: 1rem;
  }
  .page-home .ph-leaderboard__grid {
    gap: 20px;
  }
  .page-home .ph-leaderboard__card-img {
    height: 150px;
  }
  .page-home .ph-leaderboard__card-score {
    font-size: 1.1rem;
  }
  .page-home .ph-transition__img {
    height: 180px;
  }
  .page-home .ph-transition__strong {
    font-size: 1rem;
  }
  .page-home .ph-collection__grid {
    gap: 16px;
  }
  .page-home .ph-collection__card-bg {
    height: 140px;
  }
  .page-home .ph-collection__card-title {
    font-size: 0.9rem;
  }
  .page-home .ph-cta__title {
    font-size: 1.6rem;
  }
  .page-home .ph-cta__desc {
    font-size: 0.95rem;
  }
  .page-home .btn-primary,
  .page-home .btn-secondary {
    padding: 12px 28px;
    font-size: 0.85rem;
  }
}

@media (min-width: 768px) {
  .page-home .ph-preview__grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-home .ph-preview__card:nth-child(5) {
    grid-column: 1 / -1;
    max-width: 50%;
    justify-self: center;
  }
  .page-home .ph-leaderboard__grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
  .page-home .ph-collection__grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
  .page-home .ph-hero__speedline {
    bottom: 80px;
  }
}

@media (min-width: 1024px) {
  .page-home .ph-preview__grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
  .page-home .ph-preview__card:nth-child(4),
  .page-home .ph-preview__card:nth-child(5) {
    grid-column: span 1;
  }
  .page-home .ph-preview__card:nth-child(4) {
    grid-column: 2 / 3;
  }
  .page-home .ph-preview__card:nth-child(5) {
    grid-column: 3 / 4;
  }
  .page-home .ph-leaderboard__card-img {
    height: 220px;
  }
  .page-home .ph-transition__img {
    height: 320px;
  }
}
</<PAGE_CSS>