/* ===== 页面专属：首页 .page-home ===== */
.page-home {
  --ph-c-primary: #E63946;
  --ph-c-secondary: #C0C0C0;
  --ph-c-dark: #2B2D42;
  --ph-c-accent: #39FF14;
  --ph-c-light: #F8F9FA;
  --ph-font-head: 'Inter', -apple-system, sans-serif;
  --ph-font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --ph-font-mono: 'JetBrains Mono', 'Consolas', monospace;
  --ph-grid-gap: 1rem;
  --ph-radius: 4px;
  --ph-line: 1px solid rgba(192, 192, 192, 0.3);
  --ph-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--ph-c-dark);
  color: var(--ph-c-light);
  font-family: var(--ph-font-body);
  line-height: 1.5;
  overflow-x: hidden;
}

/* 面包屑 */
.page-home__context {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  font-size: var(--scale-small, 0.875rem);
  font-family: var(--ph-font-mono);
  color: var(--ph-c-secondary);
  border-bottom: var(--ph-line);
  background: rgba(43, 45, 66, 0.9);
  backdrop-filter: blur(4px);
  position: relative;
  z-index: 10;
}
.page-home__context-label,
.page-home__context-current {
  letter-spacing: 0.03em;
}
.page-home__context-divider {
  color: var(--ph-c-primary);
  font-weight: 700;
}
.page-home__context-current {
  color: var(--ph-c-primary);
  font-weight: 600;
}

/* 首屏英雄区 */
.page-home__hero {
  position: relative;
  display: flex;
  align-items: stretch;
  min-height: 100vh;
  background: var(--ph-c-dark);
  overflow: hidden;
}
.page-home__hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-home__hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.15;
  filter: grayscale(0.6) contrast(1.2);
}
.page-home__hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg, rgba(43, 45, 66, 0.85) 40%, rgba(230, 57, 70, 0.25) 100%);
  pointer-events: none;
}
.page-home__hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

/* 版本切换区（左侧） */
.page-home__version-zone {
  flex: 0 0 auto;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem;
  background: rgba(43, 45, 66, 0.75);
  backdrop-filter: blur(6px);
  border: var(--ph-line);
  border-radius: var(--ph-radius);
  box-shadow: var(--ph-shadow);
  position: relative;
}
.page-home__version-zone::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-red, linear-gradient(135deg, #E63946, #FF6B6B));
}
.page-home__version-heading {
  font-family: var(--ph-font-head);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--ph-c-primary);
  margin: 0;
  letter-spacing: 0.02em;
}
.page-home__version-switch {
  display: flex;
  gap: 1rem;
  align-items: center;
}
.page-home__version-btn {
  flex: 1;
  padding: 0.6rem 1rem;
  font-family: var(--ph-font-head);
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid var(--ph-c-secondary);
  border-radius: var(--ph-radius);
  background: transparent;
  color: var(--ph-c-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}
.page-home__version-btn:hover {
  border-color: var(--ph-c-accent);
  color: var(--ph-c-accent);
}
.page-home__version-btn:focus-visible {
  outline: 2px solid var(--ph-c-accent);
  outline-offset: 2px;
}
.page-home__version-btn--active {
  border-color: var(--ph-c-primary);
  background: var(--ph-c-primary);
  color: #fff;
}
.page-home__version-btn--active:hover {
  border-color: var(--ph-c-primary);
  background: #d62d3a;
  color: #fff;
}
.page-home__version-desc {
  font-size: 0.875rem;
  color: var(--ph-c-secondary);
  margin: 0;
  line-height: 1.5;
}
.page-home__version-preview {
  border: var(--ph-line);
  border-radius: var(--ph-radius);
  overflow: hidden;
  background: rgba(0, 0, 0, 0.3);
}
.page-home__version-preview-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 220px;
  object-fit: cover;
}

/* 赛事入口三栏 */
.page-home__event-grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--ph-grid-gap);
  min-width: 0;
}
.page-home__event-col {
  display: flex;
}
.page-home__event-card {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.25rem;
  background: rgba(43, 45, 66, 0.65);
  backdrop-filter: blur(4px);
  border: var(--ph-line);
  border-radius: var(--ph-radius);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
}
.page-home__event-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  border-color: var(--ph-c-accent);
}
.page-home__event-index {
  font-family: var(--ph-font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--ph-c-primary);
  letter-spacing: 0.05em;
}
.page-home__event-title {
  font-family: var(--ph-font-head);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--ph-c-light);
  margin: 0;
}
.page-home__event-compare {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.page-home__compare-label {
  font-size: 0.75rem;
  color: var(--ph-c-secondary);
  font-family: var(--ph-font-mono);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.page-home__compare-select {
  padding: 0.4rem 0.6rem;
  font-family: var(--ph-font-body);
  font-size: 0.875rem;
  background: rgba(0, 0, 0, 0.4);
  color: var(--ph-c-light);
  border: 1px solid var(--ph-c-secondary);
  border-radius: var(--ph-radius);
  cursor: pointer;
  transition: border-color 0.2s;
}
.page-home__compare-select:focus-visible {
  border-color: var(--ph-c-accent);
  outline: none;
}
.page-home__compare-frames {
  display: flex;
  gap: 0.5rem;
}
.page-home__frame {
  flex: 1;
  padding: 0.5rem;
  font-size: 0.7rem;
  font-family: var(--ph-font-mono);
  text-align: center;
  border-radius: 2px;
  background: rgba(0, 0, 0, 0.3);
  color: var(--ph-c-secondary);
  border: 1px solid transparent;
  transition: all 0.2s;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-home__frame--new {
  border-color: var(--ph-c-primary);
  color: var(--ph-c-primary);
}
.page-home__frame--old {
  border-color: var(--ph-c-secondary);
  color: var(--ph-c-secondary);
}
.page-home__event-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  font-size: 0.7rem;
  font-family: var(--ph-font-mono);
  background: var(--ph-c-primary);
  color: #fff;
  border-radius: 2px;
  align-self: flex-start;
  letter-spacing: 0.03em;
}

/* 性能提升区 */
.page-home__performance {
  padding: 3rem 1rem;
  background: linear-gradient(135deg, rgba(43, 45, 66, 0.95), rgba(43, 45, 66, 0.8));
  position: relative;
}
.page-home__section-divider {
  width: 60px;
  height: 3px;
  background: var(--gradient-red, linear-gradient(135deg, #E63946, #FF6B6B));
  margin: 0 auto 1.5rem;
}
.page-home__section-title {
  font-family: var(--ph-font-head);
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  color: var(--ph-c-light);
  margin: 0 0 0.5rem;
  letter-spacing: 0.02em;
}
.page-home__perf-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  max-width: 960px;
  margin: 2rem auto 0;
}
.page-home__perf-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 1.5rem 1rem;
  background: rgba(0, 0, 0, 0.3);
  border: var(--ph-line);
  border-radius: var(--ph-radius);
  text-align: center;
  transition: border-color 0.2s;
}
.page-home__perf-card:hover {
  border-color: var(--ph-c-accent);
}
.page-home__perf-number {
  font-family: var(--ph-font-mono);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--ph-c-primary);
  line-height: 1;
}
.page-home__perf-unit {
  font-family: var(--ph-font-mono);
  font-size: 1rem;
  color: var(--ph-c-accent);
  margin-left: 0.2rem;
}
.page-home__perf-label {
  font-size: 0.85rem;
  color: var(--ph-c-secondary);
  margin: 0.5rem 0 0;
}
.page-home__perf-chart {
  max-width: 600px;
  margin: 2rem auto 0;
  border: var(--ph-line);
  border-radius: var(--ph-radius);
  overflow: hidden;
  background: rgba(0, 0, 0, 0.2);
}
.page-home__perf-chart-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: contain;
}

/* 适配清单 */
.page-home__compatibility {
  padding: 3rem 1rem;
  background: var(--ph-c-dark);
}
.page-home__compatibility-desc {
  text-align: center;
  color: var(--ph-c-secondary);
  font-size: 0.95rem;
  margin: 0 0 2rem;
}
.page-home__compat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
  max-width: 960px;
  margin: 0 auto;
}
.page-home__compat-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.25);
  border: var(--ph-line);
  border-radius: var(--ph-radius);
  transition: border-color 0.2s;
}
.page-home__compat-item:hover {
  border-color: var(--ph-c-accent);
}
.page-home__compat-device {
  font-family: var(--ph-font-head);
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--ph-c-light);
  flex: 1;
}
.page-home__compat-res {
  font-family: var(--ph-font-mono);
  font-size: 0.75rem;
  color: var(--ph-c-secondary);
  white-space: nowrap;
}
.page-home__compat-status {
  font-family: var(--ph-font-mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  background: rgba(57, 255, 20, 0.15);
  color: var(--ph-c-accent);
  border-radius: 2px;
  white-space: nowrap;
}

/* 小屏赛事变更说明 */
.page-home__changeset {
  padding: 3rem 1rem;
  background: linear-gradient(135deg, rgba(43, 45, 66, 0.9), rgba(43, 45, 66, 0.7));
  position: relative;
}
.page-home__changeset-desc {
  text-align: center;
  color: var(--ph-c-secondary);
  font-size: 0.95rem;
  margin: 0 0 2rem;
}
.page-home__changeset-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.5rem;
  max-width: 960px;
  margin: 0 auto;
}
.page-home__changeset-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.8rem;
  background: rgba(0, 0, 0, 0.2);
  border-left: 3px solid var(--ph-c-primary);
  border-radius: 2px;
  transition: background 0.2s;
}
.page-home__changeset-item:hover {
  background: rgba(230, 57, 70, 0.1);
}
.page-home__changeset-num {
  font-family: var(--ph-font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ph-c-primary);
  min-width: 2rem;
}
.page-home__changeset-text {
  font-size: 0.875rem;
  color: var(--ph-c-light);
  flex: 1;
}
.page-home__changeset-visual {
  max-width: 400px;
  margin: 2rem auto 0;
  border: var(--ph-line);
  border-radius: var(--ph-radius);
  overflow: hidden;
  background: rgba(0, 0, 0, 0.2);
}
.page-home__changeset-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 600px;
  object-fit: contain;
}

/* CTA 入口 */
.page-home__cta {
  padding: 2rem 1rem 3rem;
  background: var(--ph-c-dark);
  border-top: 1px solid rgba(192, 192, 192, 0.15);
}
.page-home__cta-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
}
.page-home__cta-text {
  font-size: 1.125rem;
  color: var(--ph-c-secondary);
  margin: 0;
  font-weight: 400;
}
.page-home__cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}
.page-home__cta-link {
  padding: 0.5rem 1.25rem;
  font-family: var(--ph-font-head);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ph-c-light);
  background: rgba(230, 57, 70, 0.15);
  border: 1px solid var(--ph-c-primary);
  border-radius: var(--ph-radius);
  text-decoration: none;
  transition: all 0.2s ease;
}
.page-home__cta-link:hover {
  background: var(--ph-c-primary);
  color: #fff;
  border-color: var(--ph-c-primary);
}
.page-home__cta-link:focus-visible {
  outline: 2px solid var(--ph-c-accent);
  outline-offset: 2px;
}

/* ===== 移动端优先 适配窄屏 ===== */
@media (max-width: 768px) {
  .page-home__hero {
    min-height: auto;
  }
  .page-home__hero-inner {
    flex-direction: column;
    padding: 1rem 0.75rem 2rem;
    gap: 1.5rem;
  }
  .page-home__version-zone {
    max-width: 100%;
    padding: 1rem;
  }
  .page-home__version-heading {
    font-size: 1.35rem;
  }
  .page-home__version-switch {
    gap: 0.5rem;
  }
  .page-home__version-btn {
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem;
  }
  .page-home__version-preview-img {
    max-height: 140px;
  }
  .page-home__event-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  .page-home__event-card {
    padding: 1rem;
  }
  .page-home__event-title {
    font-size: 1rem;
  }
  .page-home__performance {
    padding: 2rem 0.75rem;
  }
  .page-home__section-title {
    font-size: 1.5rem;
  }
  .page-home__perf-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }
  .page-home__perf-number {
    font-size: 2rem;
  }
  .page-home__perf-card {
    padding: 1rem 0.75rem;
  }
  .page-home__perf-chart {
    margin-top: 1.5rem;
  }
  .page-home__compatibility {
    padding: 2rem 0.75rem;
  }
  .page-home__compat-grid {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  .page-home__compat-item {
    padding: 0.6rem 0.75rem;
  }
  .page-home__changeset {
    padding: 2rem 0.75rem;
  }
  .page-home__changeset-list {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
  .page-home__changeset-item {
    padding: 0.5rem 0.6rem;
  }
  .page-home__changeset-text {
    font-size: 0.8rem;
  }
  .page-home__changeset-visual {
    max-width: 280px;
  }
  .page-home__cta {
    padding: 1.5rem 0.75rem 2rem;
  }
  .page-home__cta-links {
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
  }
  .page-home__cta-link {
    width: 100%;
    max-width: 240px;
    text-align: center;
  }
  .page-home__context {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
  }
}

/* ===== 桌面增强 1024px+ ===== */
@media (min-width: 1024px) {
  .page-home__hero-inner {
    flex-direction: row;
    align-items: flex-start;
    padding: 3rem 2rem 4rem;
    gap: 2.5rem;
  }
  .page-home__version-zone {
    position: sticky;
    top: 2rem;
    max-width: 320px;
    flex-shrink: 0;
  }
  .page-home__event-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }
  .page-home__perf-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }
  .page-home__perf-number {
    font-size: 3.2rem;
  }
  .page-home__compat-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
  }
  .page-home__changeset-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }
  .page-home__section-title {
    font-size: 2.2rem;
  }
}

/* ===== 大屏 1440px+ ===== */
@media (min-width: 1440px) {
  .page-home__hero-inner {
    padding: 4rem 2rem 5rem;
    gap: 3rem;
  }
  .page-home__version-zone {
    max-width: 360px;
    padding: 2rem;
  }
  .page-home__version-heading {
    font-size: 2rem;
  }
  .page-home__event-grid {
    gap: 1.25rem;
  }
  .page-home__event-card {
    padding: 1.5rem;
  }
  .page-home__perf-grid {
    gap: 1.5rem;
  }
  .page-home__perf-number {
    font-size: 3.6rem;
  }
}

/* ===== 确保图片响应式不溢出 ===== */
.page-home img {
  max-width: 100%;
  height: auto;
}

/* ===== 数据滚动动画初始状态（渐进增强） ===== */
.page-home__perf-number {
  transition: all 0.3s ease;
}
.page-home__perf-card:hover .page-home__perf-number {
  color: var(--ph-c-accent);
}

/* ===== 焦点可见性 ===== */
.page-home *:focus-visible {
  outline: 2px solid var(--ph-c-accent);
  outline-offset: 2px;
}

/* ===== 键盘焦点反馈 ===== */
.page-home a:focus-visible,
.page-home button:focus-visible,
.page-home select:focus-visible {
  outline: 2px solid var(--ph-c-accent);
  outline-offset: 2px;
}