/* ===== page-about 专属样式 ===== */
.page-about {
  --about-gap: 3rem;
  --about-card-radius: 12px;
  --about-overlay: rgba(26,26,26,0.60);
  --about-skew-angle: -2deg;
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--color-secondary, #1A1A1A);
  color: var(--text-primary, #FFFFFF);
  overflow-x: hidden;
}

/* 面包屑 */
.page-about .breadcrumb {
  padding: 1rem 0 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary, #B0B0B0);
  background: transparent;
  margin-bottom: 0;
}
.page-about .breadcrumb a {
  color: var(--color-accent1, #B0B0B0);
  text-decoration: none;
  transition: color var(--transition, 0.3s ease);
}
.page-about .breadcrumb a:hover {
  color: var(--color-primary, #C8102E);
}
.page-about .breadcrumb .sep {
  margin: 0 0.5rem;
  color: var(--color-accent1, #B0B0B0);
}
.page-about .breadcrumb [aria-current="page"] {
  color: var(--text-primary, #FFFFFF);
  font-weight: 600;
}

/* 品牌理念区 */
.page-about .brand-philosophy {
  position: relative;
  width: 100%;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
  margin-bottom: var(--about-gap);
  transform: skewY(var(--about-skew-angle));
  transform-origin: left center;
  margin-top: -0.5rem;
}
.page-about .brand-philosophy > * {
  transform: skewY(calc(-1 * var(--about-skew-angle)));
}
.page-about .brand-philosophy-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
.page-about .brand-philosophy-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
}
.page-about .brand-philosophy-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,26,26,0.85) 20%, rgba(200,16,46,0.35) 70%, rgba(127,63,191,0.25) 100%);
  z-index: 1;
}
.page-about .brand-philosophy-content {
  position: relative;
  z-index: 2;
  padding: 3rem 0 3.5rem;
  max-width: 720px;
}
.page-about .brand-heading {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: clamp(1.8rem, 4.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary, #C8102E);
  margin: 0 0 0.4rem;
  line-height: 1.1;
}
.page-about .brand-tagline {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  font-weight: 800;
  font-style: italic;
  background: linear-gradient(135deg, var(--gradient-start, #C8102E), var(--gradient-end, #7F3FBF));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0 0 1rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.page-about .brand-desc {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.7;
  color: var(--text-secondary, #B0B0B0);
  margin: 0 0 1.8rem;
  max-width: 640px;
}
.page-about .brand-desc strong {
  color: var(--text-primary, #FFFFFF);
  font-weight: 600;
}
.page-about .brand-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}
.page-about .brand-actions .btn-primary {
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius, 8px);
  background: var(--color-primary, #C8102E);
  color: var(--text-primary, #FFFFFF);
  text-decoration: none;
  transition: background var(--transition, 0.3s ease), transform 0.2s ease;
  display: inline-block;
  border: 2px solid transparent;
}
.page-about .brand-actions .btn-primary:hover {
  background: transparent;
  border-color: var(--color-primary, #C8102E);
  color: var(--color-primary, #C8102E);
  transform: scale(1.04);
}
.page-about .brand-link {
  font-size: 0.95rem;
  color: var(--color-accent1, #B0B0B0);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--transition, 0.3s ease), border-color var(--transition, 0.3s ease);
  padding-bottom: 0.2rem;
}
.page-about .brand-link:hover {
  color: var(--text-primary, #FFFFFF);
  border-bottom-color: var(--color-primary, #C8102E);
}

/* 通用章节标题 */
.page-about .section-title {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--text-primary, #FFFFFF);
  margin: 0 0 0.6rem;
  padding-bottom: 0.6rem;
  border-bottom: 3px solid var(--color-primary, #C8102E);
  display: inline-block;
}
.page-about .section-desc {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-secondary, #B0B0B0);
  max-width: 680px;
  margin: 0 0 2rem;
}

/* 场馆赛程区 */
.page-about .venue-schedule {
  padding: 0 1rem var(--about-gap);
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  width: 100%;
}
.page-about .venue-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.8rem;
}
.page-about .venue-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(176,176,176,0.15);
  border-radius: var(--about-card-radius);
  overflow: hidden;
  transition: transform var(--transition, 0.3s ease), box-shadow var(--transition, 0.3s ease);
  display: flex;
  flex-direction: column;
  cursor: default;
}
.page-about .venue-card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 12px 40px rgba(200,16,46,0.18), 0 4px 20px rgba(127,63,191,0.12);
  border-color: var(--color-primary, #C8102E);
}
.page-about .venue-card-img {
  width: 100%;
  height: 200px;
  overflow: hidden;
}
.page-about .venue-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}
.page-about .venue-card:hover .venue-card-img img {
  transform: scale(1.06);
}
.page-about .venue-card-body {
  padding: 1.2rem 1.4rem 1.4rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.page-about .venue-card-title {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary, #FFFFFF);
  margin: 0 0 0.4rem;
}
.page-about .venue-card-desc {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-secondary, #B0B0B0);
  margin: 0 0 0.8rem;
  flex: 1;
}
.page-about .venue-card-meta {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--color-accent2, #7F3FBF);
  background: rgba(127,63,191,0.10);
  padding: 0.2rem 0.8rem;
  border-radius: 20px;
  margin-bottom: 0.8rem;
  align-self: flex-start;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.page-about .venue-card-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary, #C8102E);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition, 0.3s ease), color var(--transition, 0.3s ease);
  align-self: flex-start;
  padding-bottom: 0.15rem;
}
.page-about .venue-card-link:hover {
  border-bottom-color: var(--color-primary, #C8102E);
  color: var(--text-primary, #FFFFFF);
}

/* 座位图预览区 */
.page-about .seating-chart {
  padding: 0 1rem var(--about-gap);
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  width: 100%;
}
.page-about .seating-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(176,176,176,0.12);
  border-radius: var(--about-card-radius);
  padding: 1.5rem;
}
.page-about .seating-image {
  position: relative;
  border-radius: var(--radius, 8px);
  overflow: hidden;
  cursor: zoom-in;
  transition: box-shadow var(--transition, 0.3s ease);
  width: 100%;
}
.page-about .seating-image:hover {
  box-shadow: 0 4px 30px rgba(200,16,46,0.15);
}
.page-about .seating-image img {
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: contain;
  background: rgba(0,0,0,0.3);
  display: block;
  border-radius: var(--radius, 8px);
}
.page-about .seating-hint {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  background: rgba(26,26,26,0.80);
  color: var(--text-secondary, #B0B0B0);
  font-size: 0.8rem;
  padding: 0.3rem 0.9rem;
  border-radius: 20px;
  pointer-events: none;
  border: 1px solid rgba(176,176,176,0.2);
  backdrop-filter: blur(4px);
}
.page-about .seating-info {
  flex: 1;
}
.page-about .seating-info-title {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary, #FFFFFF);
  margin: 0 0 1rem;
}
.page-about .seating-info-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.page-about .seating-info-list li {
  position: relative;
  padding-left: 1.6rem;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--text-secondary, #B0B0B0);
}
.page-about .seating-info-list li::before {
  content: "◆";
  position: absolute;
  left: 0;
  color: var(--color-primary, #C8102E);
  font-size: 0.6rem;
  top: 0.35rem;
}
.page-about .seating-info .btn-primary {
  padding: 0.65rem 1.8rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius, 8px);
  background: var(--color-primary, #C8102E);
  color: var(--text-primary, #FFFFFF);
  text-decoration: none;
  display: inline-block;
  transition: background var(--transition, 0.3s ease), transform 0.2s ease;
  border: 2px solid transparent;
}
.page-about .seating-info .btn-primary:hover {
  background: transparent;
  border-color: var(--color-primary, #C8102E);
  color: var(--color-primary, #C8102E);
  transform: scale(1.04);
}

/* IN专区 */
.page-about .in-zone {
  background: linear-gradient(160deg, rgba(200,16,46,0.10) 0%, rgba(127,63,191,0.08) 100%);
  border-top: 1px solid rgba(200,16,46,0.25);
  border-bottom: 1px solid rgba(127,63,191,0.20);
  padding: 2.5rem 0;
  margin-top: 0.5rem;
}
.page-about .in-zone .container {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: 0 1rem;
}
.page-about .in-zone .section-title {
  border-bottom-color: var(--color-accent2, #7F3FBF);
}
.page-about .in-zone-wrapper {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: flex-start;
}
.page-about .in-zone-content {
  flex: 1;
}
.page-about .in-zone-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-secondary, #B0B0B0);
  margin: 0 0 1.5rem;
  max-width: 640px;
}
.page-about .in-zone-desc strong {
  color: var(--text-primary, #FFFFFF);
  font-weight: 600;
}
.page-about .in-zone-features {
  list-style: none;
  padding: 0;
  margin: 0 0 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.page-about .in-zone-features li {
  position: relative;
  padding-left: 1.6rem;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--text-secondary, #B0B0B0);
}
.page-about .in-zone-features li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--color-accent2, #7F3FBF);
  font-weight: 700;
  font-size: 1.1rem;
}
.page-about .in-zone .btn-primary {
  padding: 0.7rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius, 8px);
  background: var(--color-primary, #C8102E);
  color: var(--text-primary, #FFFFFF);
  text-decoration: none;
  display: inline-block;
  transition: background var(--transition, 0.3s ease), transform 0.2s ease;
  border: 2px solid transparent;
}
.page-about .in-zone .btn-primary:hover {
  background: transparent;
  border-color: var(--color-primary, #C8102E);
  color: var(--color-primary, #C8102E);
  transform: scale(1.04);
}
.page-about .in-zone-visual {
  flex-shrink: 0;
  width: 100%;
  max-width: 400px;
}
.page-about .in-zone-visual svg {
  width: 100%;
  height: auto;
  display: block;
  opacity: 0.85;
}

/* ===== 桌面端增强 ===== */
@media (min-width: 768px) {
  .page-about .brand-philosophy {
    min-height: 580px;
  }
  .page-about .brand-philosophy-content {
    padding: 4rem 0 4.5rem;
  }
  .page-about .venue-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5rem;
  }
  .page-about .venue-card:nth-child(2) {
    transform: translateY(1.2rem);
  }
  .page-about .venue-card:nth-child(3) {
    transform: translateY(0.6rem);
  }
  .page-about .venue-card:hover {
    transform: translateY(-6px) scale(1.02);
  }
  .page-about .venue-card:nth-child(2):hover {
    transform: translateY(-4px) scale(1.02);
  }
  .page-about .venue-card:nth-child(3):hover {
    transform: translateY(-5px) scale(1.02);
  }
  .page-about .seating-layout {
    flex-direction: row;
    align-items: flex-start;
    padding: 2rem;
  }
  .page-about .seating-image {
    flex: 0 0 58%;
  }
  .page-about .seating-image img {
    max-height: 500px;
  }
  .page-about .seating-info {
    flex: 1;
    padding-left: 1rem;
  }
  .page-about .in-zone-wrapper {
    flex-direction: row;
    align-items: center;
  }
  .page-about .in-zone-visual {
    width: 340px;
    flex-shrink: 0;
  }
}

@media (min-width: 1024px) {
  .page-about .brand-philosophy {
    min-height: 640px;
  }
  .page-about .brand-philosophy-content {
    padding: 5rem 0 5.5rem;
  }
  .page-about .venue-grid {
    gap: 2rem;
  }
  .page-about .venue-card-img {
    height: 220px;
  }
  .page-about .seating-layout {
    padding: 2.5rem;
  }
  .page-about .seating-image img {
    max-height: 600px;
  }
  .page-about .in-zone {
    padding: 3rem 0;
  }
  .page-about .in-zone-visual {
    width: 400px;
  }
}

/* 窄屏溢出保护 */
@media (max-width: 380px) {
  .page-about .brand-tagline {
    font-size: 1.6rem;
  }
  .page-about .venue-card-body {
    padding: 1rem;
  }
  .page-about .seating-layout {
    padding: 0.8rem;
  }
  .page-about .seating-hint {
    font-size: 0.7rem;
    bottom: 0.6rem;
    right: 0.6rem;
  }
}