/* ===== 页面专属：首页 .page-home ===== */
.page-home {
  --ph-hero-min-height: 85vh;
  --ph-gap-y: 5rem;
  --ph-deco-color: #FF6B35;
  --ph-glow-color: #00BCD4;
  --ph-border-gradient: linear-gradient(135deg, #B0BEC5, #ECEFF1);
  --ph-particle-count: 6;
  color: var(--color-text, #F5F7FA);
  background: var(--color-bg, #0A0E27);
}

/* ===== Hero 区块 ===== */
.ph-hero {
  position: relative;
  min-height: var(--ph-hero-min-height);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 3rem 0 2rem;
}

.ph-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.ph-hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  filter: saturate(0.6) brightness(0.5);
}

.ph-hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.ph-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: #B0BEC5;
  border-radius: 50%;
  opacity: 0.3;
  animation: ph-float 12s infinite alternate ease-in-out;
}

.ph-particle:nth-child(1) { top: 12%; left: 8%; animation-duration: 14s; animation-delay: 0s; }
.ph-particle:nth-child(2) { top: 55%; left: 78%; animation-duration: 11s; animation-delay: 0.6s; width: 6px; height: 6px; }
.ph-particle:nth-child(3) { top: 80%; left: 22%; animation-duration: 16s; animation-delay: 1.2s; opacity: 0.2; }
.ph-particle:nth-child(4) { top: 30%; left: 88%; animation-duration: 13s; animation-delay: 0.3s; width: 3px; height: 3px; }
.ph-particle:nth-child(5) { top: 70%; left: 48%; animation-duration: 15s; animation-delay: 0.9s; width: 5px; height: 5px; opacity: 0.25; }
.ph-particle:nth-child(6) { top: 15%; left: 60%; animation-duration: 10s; animation-delay: 1.8s; }

@keyframes ph-float {
  0% { transform: translate(0, 0) scale(1); opacity: 0.2; }
  50% { opacity: 0.5; }
  100% { transform: translate(18px, -28px) scale(1.2); opacity: 0.15; }
}

.ph-hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem 0;
}

.ph-hero-deco {
  display: inline-block;
  font-family: var(--font-heading, Georgia, 'Times New Roman', serif);
  font-size: 0.95rem;
  font-style: italic;
  letter-spacing: 0.3em;
  color: var(--ph-deco-color, #FF6B35);
  background: rgba(255,107,53,0.08);
  padding: 0.4rem 1.2rem;
  transform: skewX(-6deg);
  margin-bottom: 1.5rem;
  border-left: 3px solid var(--ph-deco-color, #FF6B35);
}

.ph-hero-title {
  font-family: var(--font-heading, Georgia, 'Times New Roman', serif);
  font-size: 2.75rem;
  font-weight: 700;
  font-style: italic;
  letter-spacing: 0.08em;
  line-height: 1.15;
  margin: 0 0 1.25rem;
  color: var(--color-text, #F5F7FA);
  text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.ph-hero-summary {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text-muted, #8C9EAB);
  max-width: 680px;
  margin: 0 auto 2rem;
  padding: 0 1rem;
}

.ph-hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.ph-hero-meta {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 1rem;
  z-index: 1;
}

.ph-meta-line {
  display: block;
  width: 60px;
  height: 1px;
  background: var(--ph-border-gradient);
}

.ph-meta-tag {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--color-text-muted, #8C9EAB);
  text-transform: uppercase;
}

/* ===== 通用区块头 ===== */
.ph-section-header {
  margin-bottom: 2.5rem;
}

.ph-section-deco {
  display: inline-block;
  font-family: var(--font-heading, Georgia, 'Times New Roman', serif);
  font-size: 0.85rem;
  font-style: italic;
  letter-spacing: 0.2em;
  color: var(--ph-deco-color, #FF6B35);
  margin-bottom: 0.5rem;
  opacity: 0.7;
}

.ph-section-title {
  font-family: var(--font-heading, Georgia, 'Times New Roman', serif);
  font-size: 2rem;
  font-weight: 700;
  font-style: italic;
  letter-spacing: 0.06em;
  line-height: 1.2;
  margin: 0 0 0.75rem;
  color: var(--color-text, #F5F7FA);
}

/* ===== 更新亮点速览 ===== */
.ph-highlights {
  padding: var(--ph-gap-y, 5rem) 0;
  background: var(--color-bg-elevated, #12183A);
}

.ph-highlights-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.ph-highlight-panel {
  border: 1px solid rgba(176,190,197,0.2);
  background: rgba(10,14,39,0.5);
  transition: border-color var(--transition, 0.3s ease);
}

.ph-highlight-panel:hover {
  border-color: var(--ph-glow-color, #00BCD4);
}

.ph-highlight-panel-left {
  overflow: hidden;
}

.ph-panel-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.ph-highlight-panel-right {
  padding: 1.5rem;
  display: flex;
  align-items: center;
}

/* ===== 标签页（纯CSS） ===== */
.ph-tabs {
  width: 100%;
}

.ph-tab-radio {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.ph-tab-labels {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid rgba(176,190,197,0.2);
  padding-bottom: 0.5rem;
}

.ph-tab-label {
  flex: 1;
  text-align: center;
  padding: 0.65rem 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted, #8C9EAB);
  cursor: pointer;
  transition: color var(--transition, 0.3s ease), border-color var(--transition, 0.3s ease);
  border-bottom: 2px solid transparent;
  margin-bottom: -0.5rem;
  letter-spacing: 0.03em;
}

.ph-tab-label:hover {
  color: var(--color-text, #F5F7FA);
}

#ph-tab-1:checked ~ .ph-tab-labels label[for="ph-tab-1"],
#ph-tab-2:checked ~ .ph-tab-labels label[for="ph-tab-2"] {
  color: var(--ph-deco-color, #FF6B35);
  border-bottom-color: var(--ph-deco-color, #FF6B35);
}

.ph-tab-panels {
  position: relative;
}

.ph-tab-panel {
  display: none;
  padding: 0.5rem 0;
}

#ph-tab-1:checked ~ .ph-tab-panels #ph-panel-1,
#ph-tab-2:checked ~ .ph-tab-panels #ph-panel-2 {
  display: block;
}

.ph-tab-icon {
  margin-bottom: 1rem;
}

.ph-tab-icon svg {
  display: block;
}

.ph-tab-title {
  font-family: var(--font-heading, Georgia, 'Times New Roman', serif);
  font-size: 1.35rem;
  font-weight: 700;
  font-style: italic;
  letter-spacing: 0.04em;
  margin: 0 0 0.75rem;
  color: var(--color-text, #F5F7FA);
}

.ph-tab-desc {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-muted, #8C9EAB);
  margin: 0;
}

/* ===== 跨设备同步 ===== */
.ph-sync {
  padding: var(--ph-gap-y, 5rem) 0;
  background: var(--color-bg, #0A0E27);
}

.ph-sync-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text-muted, #8C9EAB);
  max-width: 680px;
  margin: 0 auto 2.5rem;
  text-align: center;
}

.ph-sync-steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1rem;
  margin-bottom: 2.5rem;
}

.ph-step {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(18,24,58,0.6);
  padding: 0.5rem 1.25rem 0.5rem 0.75rem;
  border-left: 3px solid var(--ph-deco-color, #FF6B35);
}

.ph-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 0;
  background: var(--ph-deco-color, #FF6B35);
  color: var(--color-bg, #0A0E27);
  font-size: 0.85rem;
  font-weight: 700;
  font-family: var(--font-body, Arial, Helvetica, sans-serif);
}

.ph-step-content {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ph-step-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text, #F5F7FA);
  white-space: nowrap;
}

.ph-step-arrow {
  color: var(--ph-deco-color, #FF6B35);
  font-size: 1.2rem;
  font-weight: 300;
}

.ph-sync-visual {
  position: relative;
  max-width: 500px;
  margin: 0 auto 2rem;
}

.ph-sync-img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid rgba(176,190,197,0.15);
}

.ph-sync-flow {
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.75rem;
}

.ph-flow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ph-glow-color, #00BCD4);
  opacity: 0.6;
  animation: ph-pulse 2s infinite ease-in-out;
}

.ph-flow-dot:nth-child(2) { animation-delay: 0.4s; }
.ph-flow-dot:nth-child(3) { animation-delay: 0.8s; }

@keyframes ph-pulse {
  0%, 100% { opacity: 0.3; transform: scale(0.8); }
  50% { opacity: 0.9; transform: scale(1.2); }
}

.ph-sync-cta {
  text-align: center;
  margin-top: 1.5rem;
}

/* ===== 赛事板块 ===== */
.ph-event {
  padding: var(--ph-gap-y, 5rem) 0;
  background: var(--color-bg-elevated, #12183A);
}

.ph-event-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text-muted, #8C9EAB);
  max-width: 680px;
  margin: 0 auto 2.5rem;
  text-align: center;
}

.ph-event-compare {
  margin-bottom: 2rem;
}

.ph-compare-old {
  position: relative;
}

.ph-compare-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  background: rgba(255,107,53,0.12);
  color: var(--ph-deco-color, #FF6B35);
  margin-bottom: 0.75rem;
}

.ph-compare-label-old {
  background: rgba(140,158,171,0.15);
  color: var(--color-text-muted, #8C9EAB);
}

.ph-compare-img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid rgba(176,190,197,0.12);
}

.ph-event-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 1.5rem;
}

/* ===== 品牌延伸链接 ===== */
.ph-bridge {
  padding: 2.5rem 0 3.5rem;
  background: var(--color-bg, #0A0E27);
}

.ph-bridge-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
  justify-content: center;
  padding-top: 1.5rem;
}

.ph-bridge-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-muted, #8C9EAB);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color var(--transition, 0.3s ease);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
}

.ph-bridge-link:hover {
  color: var(--ph-glow-color, #00BCD4);
  border-bottom-color: var(--ph-glow-color, #00BCD4);
}

/* ===== 共享按钮在首页的微调 ===== */
.ph-btn-primary,
.ph-btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-decoration: none;
  color: var(--color-text, #F5F7FA);
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.25s ease, background 0.25s ease;
  min-width: 140px;
}

.ph-btn-primary {
  background: var(--ph-deco-color, #FF6B35);
  color: var(--color-bg, #0A0E27);
}

.ph-btn-primary:hover {
  background: #e85d2a;
  box-shadow: 0 0 20px rgba(255,107,53,0.35);
}

.ph-btn-secondary {
  background: transparent;
  border: 1.5px solid rgba(176,190,197,0.4);
  color: var(--color-text, #F5F7FA);
}

.ph-btn-secondary:hover {
  border-color: var(--ph-glow-color, #00BCD4);
  box-shadow: 0 0 14px rgba(0,188,212,0.2);
}

.ph-btn-primary:active,
.ph-btn-secondary:active {
  transform: scale(0.97);
}

/* ===== 响应式：桌面（≥768px） ===== */
@media (min-width: 768px) {
  .ph-hero {
    min-height: 80vh;
    padding: 4rem 0 3rem;
  }

  .ph-hero-title {
    font-size: 3.75rem;
    letter-spacing: 0.1em;
  }

  .ph-hero-summary {
    font-size: 1.15rem;
  }

  .ph-hero-deco {
    font-size: 1.05rem;
    padding: 0.5rem 1.5rem;
  }

  .ph-hero-ctas {
    gap: 1.5rem;
  }

  .ph-section-title {
    font-size: 2.5rem;
  }

  .ph-highlights-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }

  .ph-highlight-panel-right {
    padding: 2rem;
  }

  .ph-tab-label {
    font-size: 1rem;
    padding: 0.75rem 1rem;
  }

  .ph-tab-title {
    font-size: 1.5rem;
  }

  .ph-sync-steps {
    gap: 1rem 2rem;
  }

  .ph-step {
    padding: 0.75rem 1.5rem 0.75rem 1rem;
  }

  .ph-event-cta {
    gap: 1.5rem;
  }

  .ph-bridge-links {
    gap: 2rem 3rem;
  }

  .ph-bridge-link {
    font-size: 1rem;
  }
}

/* ===== 桌面大屏（≥1024px） ===== */
@media (min-width: 1024px) {
  .ph-hero-title {
    font-size: 4.5rem;
  }

  .ph-hero-summary {
    font-size: 1.2rem;
    max-width: 760px;
  }

  .ph-section-title {
    font-size: 2.75rem;
  }

  .ph-highlights-grid {
    gap: 3rem;
  }

  .ph-highlight-panel-right {
    padding: 2.5rem;
  }

  .ph-sync-desc {
    font-size: 1.1rem;
  }
}

/* ===== 桌面宽屏（≥1280px） ===== */
@media (min-width: 1280px) {
  .ph-hero-title {
    font-size: 5rem;
  }
}