/* ===== 品牌档案专用样式 ===== */
.page-about {
  --about-gold: #F5A623;
  --about-green: #1F8B4C;
  --about-deep-blue: #0A1F3D;
  --about-surface: #121E2D;
  --about-card-bg: #1C2E44;
  --about-text-primary: #E8EDF4;
  --about-text-secondary: #8FA0B0;
  --about-border: rgba(31, 139, 76, 0.25);
  --about-glow: rgba(245, 166, 35, 0.15);
  --about-transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 面包屑 ===== */
.page-about .about-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font: 300 0.8125rem/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-secondary);
  padding: 1.5rem 0 0.5rem;
  letter-spacing: 0.02em;
}
.page-about .about-breadcrumb a {
  color: var(--about-text-secondary);
  text-decoration: none;
  transition: color var(--about-transition);
}
.page-about .about-breadcrumb a:hover {
  color: var(--about-gold);
}
.page-about .breadcrumb-sep {
  color: var(--about-border);
  font-size: 0.75rem;
}

/* ===== 品牌定位首屏 ===== */
.page-about .about-hero {
  position: relative;
  padding: 0 0 4rem;
  overflow: hidden;
  background: var(--about-deep-blue);
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 80% 20%, rgba(31, 139, 76, 0.2) 0%, transparent 70%),
              radial-gradient(ellipse 50% 40% at 20% 80%, rgba(245, 166, 35, 0.08) 0%, transparent 70%);
  pointer-events: none;
}
.page-about .hero-bg-accent {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 80%;
  background: linear-gradient(135deg, transparent 40%, rgba(31, 139, 76, 0.06) 70%, rgba(245, 166, 35, 0.04) 100%);
  transform: rotate(-12deg);
  pointer-events: none;
}

.page-about .hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
  padding: 1rem 0 0;
  position: relative;
  z-index: 1;
}
.page-about .hero-text {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.page-about .section-tag {
  display: inline-block;
  font: 700 0.75rem/1.2 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--about-gold);
  background: rgba(245, 166, 35, 0.1);
  padding: 0.35rem 1rem;
  border-radius: 2rem;
  border: 1px solid rgba(245, 166, 35, 0.2);
  width: fit-content;
}
.page-about .hero-title {
  font: 700 2.25rem/1.15 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-primary);
  margin: 0;
  letter-spacing: -0.01em;
}
.page-about .hero-desc {
  font: 300 1rem/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-secondary);
  max-width: 36em;
  margin: 0;
}
.page-about .hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: center;
  padding: 0.75rem 0;
}
.page-about .stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.page-about .stat-number {
  font: 700 1.75rem/1.1 "Roboto Mono", "SF Mono", "Fira Code", "Consolas", monospace;
  color: var(--about-gold);
  letter-spacing: -0.02em;
}
.page-about .stat-label {
  font: 300 0.8125rem/1.3 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-secondary);
}
.page-about .stat-divider {
  width: 1px;
  height: 2.5rem;
  background: var(--about-border);
}
.page-about .hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 0.5rem;
}
.page-about .hero-figure {
  margin: 0;
  border-radius: 1.25rem;
  overflow: hidden;
  box-shadow: 0 12px 40px -8px rgba(0,0,0,0.5);
  border: 1px solid rgba(31, 139, 76, 0.15);
  transition: transform var(--about-transition), box-shadow var(--about-transition);
}
.page-about .hero-figure:hover {
  transform: scale(1.01);
  box-shadow: 0 20px 60px -12px rgba(245, 166, 35, 0.15);
}
.page-about .hero-image {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 800 / 500;
}

/* ===== 赛季架构时间线 ===== */
.page-about .about-timeline {
  padding: 4rem 0;
  background: var(--about-surface);
  position: relative;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--about-border), transparent);
}
.page-about .section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}
.page-about .section-header .section-tag {
  align-self: center;
}
.page-about .section-header .heading-h2 {
  font: 700 1.75rem/1.2 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-primary);
  margin: 0;
}
.page-about .section-desc {
  font: 300 0.9375rem/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-secondary);
  margin: 0;
}
.page-about .timeline-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.page-about .timeline-card {
  background: var(--about-card-bg);
  border-radius: 1rem;
  padding: 1.75rem 1.5rem;
  border: 1px solid var(--about-border);
  position: relative;
  transition: transform var(--about-transition), box-shadow var(--about-transition), border-color var(--about-transition);
  overflow: hidden;
}
.page-about .timeline-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--about-green), var(--about-gold));
  opacity: 0.4;
  transition: opacity var(--about-transition);
}
.page-about .timeline-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px -8px rgba(0,0,0,0.4);
  border-color: rgba(245, 166, 35, 0.2);
}
.page-about .timeline-card:hover::before {
  opacity: 1;
}
.page-about .card-accent-line {
  display: none;
}
.page-about .card-icon {
  margin-bottom: 0.75rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(245, 166, 35, 0.08);
  border-radius: 0.75rem;
  border: 1px solid rgba(245, 166, 35, 0.1);
}
.page-about .card-title {
  font: 700 1.125rem/1.3 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-primary);
  margin: 0 0 0.5rem;
}
.page-about .card-desc {
  font: 300 0.875rem/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-secondary);
  margin: 0 0 0.75rem;
}
.page-about .card-meta {
  font: 400 0.75rem/1.2 "Roboto Mono", "SF Mono", "Fira Code", "Consolas", monospace;
  color: var(--about-green);
  letter-spacing: 0.02em;
  opacity: 0.7;
}

/* ===== 数据对照展示 ===== */
.page-about .about-showcase {
  padding: 4rem 0;
  background: var(--about-deep-blue);
}
.page-about .showcase-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}
.page-about .showcase-figure {
  margin: 0;
  border-radius: 1.25rem;
  overflow: hidden;
  box-shadow: 0 12px 40px -8px rgba(0,0,0,0.4);
  border: 1px solid rgba(31, 139, 76, 0.1);
  transition: transform var(--about-transition);
}
.page-about .showcase-figure:hover {
  transform: scale(1.01);
}
.page-about .showcase-image {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 800 / 500;
}
.page-about .fig-caption {
  font: 300 0.75rem/1.3 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-secondary);
  padding: 0.5rem 0.75rem;
  background: rgba(18, 30, 45, 0.8);
  backdrop-filter: blur(4px);
  border-radius: 0 0 1.25rem 1.25rem;
  text-align: center;
  letter-spacing: 0.03em;
}
.page-about .showcase-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.page-about .showcase-content .section-tag {
  align-self: flex-start;
}
.page-about .showcase-content .heading-h2 {
  font: 700 1.75rem/1.2 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-primary);
  margin: 0;
}
.page-about .showcase-desc {
  font: 300 0.9375rem/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-secondary);
  margin: 0;
}
.page-about .showcase-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.page-about .list-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font: 300 0.9375rem/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-primary);
}
.page-about .list-item svg {
  flex-shrink: 0;
}
.page-about .showcase-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 0.75rem;
}

/* ===== 技术优势 ===== */
.page-about .about-tech {
  padding: 4rem 0;
  background: var(--about-surface);
  position: relative;
}
.page-about .about-tech::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--about-border), transparent);
}
.page-about .tech-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}
.page-about .tech-info {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}
.page-about .tech-info .section-tag {
  align-self: flex-start;
}
.page-about .tech-info .heading-h2 {
  font: 700 1.75rem/1.2 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-primary);
  margin: 0;
}
.page-about .tech-desc {
  font: 300 0.9375rem/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-secondary);
  margin: 0;
  max-width: 32em;
}
.page-about .tech-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
  padding: 0.75rem 0;
}
.page-about .metric-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.page-about .metric-value {
  font: 700 1.5rem/1.1 "Roboto Mono", "SF Mono", "Fira Code", "Consolas", monospace;
  color: var(--about-gold);
}
.page-about .metric-label {
  font: 300 0.8125rem/1.3 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-secondary);
}
.page-about .tech-figure {
  margin: 0;
  border-radius: 1.25rem;
  overflow: hidden;
  box-shadow: 0 12px 40px -8px rgba(0,0,0,0.4);
  border: 1px solid rgba(31, 139, 76, 0.1);
  transition: transform var(--about-transition);
}
.page-about .tech-figure:hover {
  transform: scale(1.01);
}
.page-about .tech-image {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 600 / 400;
}

/* ===== 联系我们 ===== */
.page-about .about-contact {
  padding: 4rem 0;
  background: var(--about-deep-blue);
}
.page-about .contact-panel {
  background: var(--about-card-bg);
  border-radius: 1.5rem;
  padding: 2.5rem 1.75rem;
  border: 1px solid rgba(245, 166, 35, 0.1);
  position: relative;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.875rem;
  overflow: hidden;
  transition: box-shadow var(--about-transition);
}
.page-about .contact-panel:hover {
  box-shadow: 0 16px 48px -12px rgba(245, 166, 35, 0.12);
}
.page-about .contact-glow {
  position: absolute;
  top: -40%;
  right: -20%;
  width: 60%;
  height: 80%;
  background: radial-gradient(circle, rgba(245, 166, 35, 0.06) 0%, transparent 70%);
  pointer-events: none;
}
.page-about .contact-panel .section-tag {
  align-self: center;
  position: relative;
  z-index: 1;
}
.page-about .contact-panel .heading-h2 {
  font: 700 1.75rem/1.2 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-primary);
  margin: 0;
  position: relative;
  z-index: 1;
}
.page-about .contact-desc {
  font: 300 0.9375rem/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-secondary);
  margin: 0;
  max-width: 32em;
  position: relative;
  z-index: 1;
}
.page-about .contact-channels {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
  max-width: 400px;
  padding: 0.5rem 0;
  position: relative;
  z-index: 1;
}
.page-about .channel-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: rgba(10, 31, 61, 0.5);
  border-radius: 1rem;
  text-decoration: none;
  border: 1px solid rgba(245, 166, 35, 0.08);
  transition: background var(--about-transition), border-color var(--about-transition), transform var(--about-transition);
}
.page-about .channel-item:hover {
  background: rgba(10, 31, 61, 0.8);
  border-color: rgba(245, 166, 35, 0.2);
  transform: translateY(-2px);
}
.page-about .channel-label {
  font: 400 0.8125rem/1.2 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-secondary);
  min-width: 2.5rem;
}
.page-about .channel-value {
  font: 400 0.9375rem/1.3 "Roboto Mono", "SF Mono", "Fira Code", "Consolas", monospace;
  color: var(--about-text-primary);
  word-break: break-all;
}
.page-about .contact-note {
  font: 300 0.8125rem/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--about-text-secondary);
  margin: 0;
  opacity: 0.8;
  position: relative;
  z-index: 1;
}
.page-about .contact-extra {
  position: relative;
  z-index: 1;
  padding-top: 0.5rem;
}

/* ===== 动画 ===== */
[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}
[data-animate="fade-right"] {
  transform: translateX(-20px);
}
[data-animate="fade-right"].is-visible {
  transform: translateX(0);
}
[data-animate="fade-left"] {
  transform: translateX(20px);
}
[data-animate="fade-left"].is-visible {
  transform: translateX(0);
}
[data-animate="scale-in"] {
  transform: scale(0.95);
}
[data-animate="scale-in"].is-visible {
  transform: scale(1);
}
[data-delay="100"] { transition-delay: 0.1s; }
[data-delay="150"] { transition-delay: 0.15s; }
[data-delay="200"] { transition-delay: 0.2s; }
[data-delay="250"] { transition-delay: 0.25s; }
[data-delay="300"] { transition-delay: 0.3s; }
[data-delay="400"] { transition-delay: 0.4s; }

/* ===== 桌面端媒体查询 ===== */
@media (min-width: 768px) {
  .page-about .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
  .page-about .hero-title {
    font-size: 2.75rem;
  }
  .page-about .hero-stats {
    gap: 1rem 2rem;
  }
  .page-about .stat-number {
    font-size: 2rem;
  }
  .page-about .about-timeline {
    padding: 5rem 0;
  }
  .page-about .section-header .heading-h2 {
    font-size: 2rem;
  }
  .page-about .timeline-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
  }
  .page-about .timeline-card {
    padding: 2rem 1.75rem;
  }
  .page-about .about-showcase {
    padding: 5rem 0;
  }
  .page-about .showcase-layout {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
  .page-about .showcase-content .heading-h2 {
    font-size: 2rem;
  }
  .page-about .about-tech {
    padding: 5rem 0;
  }
  .page-about .tech-grid {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
  .page-about .tech-info .heading-h2 {
    font-size: 2rem;
  }
  .page-about .tech-metrics {
    gap: 2rem 3rem;
  }
  .page-about .metric-value {
    font-size: 1.75rem;
  }
  .page-about .about-contact {
    padding: 5rem 0;
  }
  .page-about .contact-panel {
    padding: 3.5rem 3rem;
  }
  .page-about .contact-panel .heading-h2 {
    font-size: 2rem;
  }
  .page-about .contact-channels {
    flex-direction: row;
    max-width: 600px;
    gap: 1.25rem;
  }
  .page-about .channel-item {
    flex: 1;
  }
}

@media (min-width: 1024px) {
  .page-about .hero-title {
    font-size: 3.25rem;
  }
  .page-about .hero-stats {
    gap: 1.5rem 2.5rem;
  }
  .page-about .stat-number {
    font-size: 2.25rem;
  }
  .page-about .timeline-grid {
    gap: 2rem;
  }
}