/* ===== 页面专属：home ===== */
.page-home {
  --home-cover-min-height: 100vh;
  --home-panel-bg: var(--color-bg-warm);
  --home-schedule-bg: var(--color-white);
  --home-updates-bg: var(--color-primary-light);
  --card-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --card-shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.14);
  --card-radius: 6px;
  --cover-overlay-color: rgba(0, 51, 102, 0.65);
  --transition-timing: 0.25s ease;
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
}

/* ===== 首屏封面 ===== */
.home-cover {
  position: relative;
  min-height: var(--home-cover-min-height);
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--color-primary);
}

.cover-bg-wrapper {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.cover-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.cover-overlay {
  position: absolute;
  inset: 0;
  background: var(--cover-overlay-color);
  z-index: 1;
}

.cover-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 2rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.cover-context {
  font-family: var(--font-body);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 0.75rem;
  opacity: 0.9;
}

.cover-title {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-white);
  margin: 0 0 1rem;
  max-width: 12ch;
}

.cover-lead {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 48ch;
  margin: 0 0 2rem;
  line-height: 1.5;
}

.cover-index {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  max-width: 480px;
}

.index-card {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--card-radius);
  padding: 1rem 1rem 0.85rem;
  text-decoration: none;
  color: var(--color-white);
  transition: background var(--transition-timing), transform var(--transition-timing), box-shadow var(--transition-timing);
}

.index-card:hover,
.index-card:focus-visible {
  background: rgba(255, 255, 255, 0.22);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.index-icon {
  font-size: 1.5rem;
  line-height: 1;
  margin-bottom: 0.35rem;
}

.index-label {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.index-desc {
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 0.15rem;
}

/* ===== 核心数据面板 ===== */
.home-data-panel {
  background: var(--home-panel-bg);
  padding: 3rem 1.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 0.4rem;
  line-height: 1.25;
}

.section-subtitle {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-gray);
  margin: 0 0 1.2rem;
  font-weight: 400;
}

.panel-description {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  max-width: 52ch;
  line-height: 1.6;
  margin: 0 0 1.2rem;
}

.panel-link {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition-timing);
}

.panel-link:hover,
.panel-link:focus-visible {
  border-bottom-color: var(--color-accent);
  outline: none;
}

.panel-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.panel-card {
  position: relative;
  background: var(--color-white);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--card-radius);
  padding: 1.25rem 1.25rem 1rem;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-timing), box-shadow var(--transition-timing);
  cursor: default;
}

.panel-card:hover,
.panel-card:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--card-shadow-hover);
  outline: 2px solid var(--color-accent-light);
  outline-offset: 2px;
}

.card-icon {
  font-size: 2rem;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 0.3rem;
}

.card-brief {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-text);
  margin: 0;
}

.card-detail {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--color-gray);
  line-height: 1.5;
  margin-top: 0.6rem;
  padding-top: 0.6rem;
  border-top: 1px dashed rgba(0, 0, 0, 0.08);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.35s ease, opacity 0.3s ease, padding 0.3s ease;
  padding: 0 0.25rem;
}

.panel-card:hover .card-detail,
.panel-card:focus-visible .card-detail {
  max-height: 120px;
  opacity: 1;
  padding-top: 0.6rem;
  padding-bottom: 0.25rem;
}

.panel-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.panel-img {
  width: 100%;
  max-width: 800px;
  height: auto;
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  display: block;
}

/* ===== 赛程中心预览 ===== */
.home-schedule {
  background: var(--home-schedule-bg);
  padding: 3rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.schedule-header {
  margin-bottom: 2rem;
}

.schedule-visual {
  margin-bottom: 2rem;
  display: flex;
  justify-content: center;
}

.schedule-img {
  width: 100%;
  max-width: 800px;
  height: auto;
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  display: block;
}

.league-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.league-card {
  background: var(--color-bg-warm);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  transition: box-shadow var(--transition-timing);
  overflow: hidden;
}

.league-card:hover,
.league-card:focus-visible {
  box-shadow: var(--card-shadow-hover);
  outline: none;
}

.league-card[open] {
  box-shadow: var(--card-shadow-hover);
}

.league-name {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  padding: 0.9rem 1.1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  transition: background var(--transition-timing);
}

.league-name::-webkit-details-marker {
  display: none;
}

.league-name::after {
  content: "+";
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--color-accent);
  transition: transform var(--transition-timing);
}

.league-card[open] .league-name::after {
  transform: rotate(45deg);
}

.league-name:hover {
  background: rgba(0, 51, 102, 0.04);
}

.league-count {
  font-family: var(--font-data);
  font-size: 0.78rem;
  color: var(--color-gray);
  background: var(--color-white);
  padding: 0.15rem 0.5rem;
  border-radius: 10px;
  margin-left: 0.5rem;
}

.league-detail {
  padding: 0 1.1rem 1rem;
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--color-text);
  line-height: 1.5;
}

.league-detail p {
  margin: 0 0 0.6rem;
}

.league-link {
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-timing);
}

.league-link:hover,
.league-link:focus-visible {
  border-bottom-color: var(--color-accent);
  outline: none;
}

.schedule-footer {
  margin-top: 1.5rem;
  text-align: center;
}

.schedule-cta {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  background: var(--color-primary);
  padding: 0.7rem 2rem;
  border-radius: var(--card-radius);
  text-decoration: none;
  transition: background var(--transition-timing), transform var(--transition-timing);
  box-shadow: 0 2px 8px rgba(0, 51, 102, 0.25);
}

.schedule-cta:hover,
.schedule-cta:focus-visible {
  background: var(--color-accent);
  transform: translateY(-2px);
  outline: 2px solid var(--color-accent-light);
  outline-offset: 2px;
}

/* ===== 品牌动态 ===== */
.home-updates {
  background: var(--home-updates-bg);
  padding: 3rem 1.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.updates-intro {
  display: flex;
  flex-direction: column;
}

.updates-link {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition-timing);
  align-self: flex-start;
  margin-top: 0.5rem;
}

.updates-link:hover,
.updates-link:focus-visible {
  border-bottom-color: var(--color-accent);
  outline: none;
}

.updates-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.update-item {
  background: var(--color-white);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--card-radius);
  padding: 1.1rem 1.25rem;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-timing), box-shadow var(--transition-timing);
}

.update-item:hover,
.update-item:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--card-shadow-hover);
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}

.update-time {
  font-family: var(--font-data);
  font-size: 0.78rem;
  color: var(--color-gray);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.update-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0.25rem 0 0.3rem;
}

.update-brief {
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--color-text);
  margin: 0;
  line-height: 1.5;
}

.updates-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.updates-img {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  display: block;
}

/* ===== 桌面端媒体查询 ===== */
@media (min-width: 768px) {
  .cover-content {
    padding: 3rem 3rem;
  }

  .cover-title {
    font-size: 3.2rem;
  }

  .cover-lead {
    font-size: 1.15rem;
  }

  .cover-index {
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    max-width: 640px;
  }

  .index-card {
    padding: 1.25rem 1rem 1rem;
  }

  .home-data-panel {
    grid-template-columns: 1fr 1fr;
    padding: 4rem 3rem;
    gap: 2.5rem;
    align-items: start;
  }

  .panel-intro {
    grid-column: 1 / 2;
  }

  .panel-cards {
    grid-column: 1 / 2;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }

  .panel-visual {
    grid-column: 2 / 3;
    grid-row: 1 / 3;
    align-self: center;
  }

  .panel-img {
    max-width: 100%;
  }

  .section-title {
    font-size: 2.2rem;
  }

  .home-schedule {
    padding: 4rem 3rem;
  }

  .schedule-header {
    text-align: center;
  }

  .schedule-visual {
    margin-bottom: 2.5rem;
  }

  .league-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }

  .league-name {
    font-size: 1.05rem;
    padding: 1rem 1.25rem;
  }

  .schedule-footer {
    margin-top: 2rem;
  }

  .home-updates {
    grid-template-columns: 1fr 1fr;
    padding: 4rem 3rem;
    gap: 2.5rem;
    align-items: start;
  }

  .updates-intro {
    grid-column: 1 / 2;
  }

  .updates-list {
    grid-column: 1 / 2;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .updates-visual {
    grid-column: 2 / 3;
    grid-row: 1 / 3;
    align-self: center;
  }

  .updates-img {
    max-width: 100%;
  }
}

@media (min-width: 1024px) {
  .cover-title {
    font-size: 4rem;
  }

  .cover-lead {
    font-size: 1.25rem;
  }

  .home-data-panel {
    padding: 5rem 4rem;
    gap: 3rem;
  }

  .panel-cards {
    gap: 1.25rem;
  }

  .home-schedule {
    padding: 5rem 4rem;
  }

  .league-grid {
    gap: 1.25rem;
  }

  .home-updates {
    padding: 5rem 4rem;
    gap: 3rem;
  }
}

/* ===== 窄屏保障 ===== */
@media (max-width: 420px) {
  .cover-title {
    font-size: 1.8rem;
  }

  .cover-index {
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
  }

  .index-card {
    padding: 0.75rem 0.75rem 0.65rem;
  }

  .index-icon {
    font-size: 1.2rem;
  }

  .index-label {
    font-size: 0.85rem;
  }

  .index-desc {
    font-size: 0.7rem;
  }

  .home-data-panel,
  .home-schedule,
  .home-updates {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .league-grid {
    grid-template-columns: 1fr;
  }

  .updates-list {
    grid-template-columns: 1fr;
  }
}