/* 品牌概况页专属样式 */
.page-about {
  overflow-x: hidden;
}
.page-about .about-hero {
  position: relative;
  padding: 36px 0 24px;
  background: radial-gradient(ellipse at 20% 0%, rgba(0, 212, 255, 0.15), transparent 52%),
    radial-gradient(ellipse at 85% 20%, rgba(0, 255, 136, 0.12), transparent 42%);
}
.page-about .about-hero .breadcrumb {
  margin: 0 0 36px;
}
.page-about .hero-kicker {
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--neon-green);
  margin-bottom: 12px;
}
.page-about .hero-main h1 {
  font-family: var(--font-heading);
  font-size: clamp(38px, 8vw, 74px);
  line-height: 0.98;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  margin-bottom: 20px;
  color: var(--text-bright);
}
.page-about .hero-title-accent {
  display: block;
  background-image: linear-gradient(92deg, #00ff88 10%, #00d4ff 60%, #ffd700 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-bottom: 4px;
}
.page-about .hero-lead {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.75;
  max-width: 640px;
  border-left: 3px solid var(--electric-blue);
  padding-left: 16px;
  margin-bottom: 0;
}
.page-about .hero-side {
  display: grid;
  gap: 14px;
  margin-top: 32px;
}
.page-about .hero-stat {
  background: var(--bg-panel);
  border: 1px solid var(--purple-edge);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  position: relative;
  overflow: hidden;
}
.page-about .hero-stat::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--electric-blue);
}
.page-about .hero-stat:last-child::before {
  background: var(--neon-green);
}
.page-about .hero-stat-num {
  font-family: var(--font-heading);
  font-size: 30px;
  line-height: 1;
  background-image: linear-gradient(135deg, #00d4ff, #00ff88);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  white-space: nowrap;
}
.page-about .hero-stat--gold .hero-stat-num {
  background-image: linear-gradient(135deg, #ffd700, #ffb800);
}
.page-about .hero-stat-label {
  font-size: 13px;
  color: var(--text-muted);
  text-align: right;
  line-height: 1.4;
}
.page-about .diag-line {
  margin: 48px 0 0;
  opacity: 0.7;
}
.page-about .section-chapter {
  padding-top: clamp(44px, 7vw, 84px);
}
.page-about .section-chapter:first-of-type {
  padding-top: 16px;
}
.page-about .chapter-head {
  display: block;
  border-left: 4px solid var(--neon-green);
  padding-left: 18px;
  margin-bottom: 28px;
}
.page-about .chapter-index {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(46px, 7vw, 72px);
  line-height: 0.9;
  color: transparent;
  -webkit-text-stroke: 1px var(--gold-dot);
}
.page-about .chapter-title {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(20px, 3vw, 28px);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 6px;
}
.page-about .chapter-desc {
  display: block;
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 4px;
}
.page-about .image-shell {
  position: relative;
  overflow: hidden;
  background: var(--bg-panel);
  border: 1px solid rgba(123, 47, 247, 0.35);
}
.page-about .image-shell img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-about figure.image-shell {
  margin: 0;
}
.page-about .mission-grid {
  display: grid;
  gap: 28px;
  margin-top: 36px;
}
.page-about .mission-figure {
  border-radius: var(--radius-lg);
  min-height: 200px;
}
.page-about .mission-text p {
  margin-bottom: 16px;
  color: var(--text-muted);
  line-height: 1.75;
  font-size: 15px;
}
.page-about .mission-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}
.page-about .timeline {
  margin-top: 36px;
  display: grid;
  gap: 16px;
  position: relative;
}
.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 30px;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: linear-gradient(180deg, var(--electric-blue), var(--purple-edge));
  opacity: 0.4;
}
.page-about .timeline-item {
  background: var(--bg-panel);
  border: 1px solid rgba(123, 47, 247, 0.45);
  border-radius: var(--radius-md);
  position: relative;
}
.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 22px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--neon-green);
  box-shadow: 0 0 12px rgba(0, 255, 136, 0.45);
  border: 2px solid var(--bg-deep);
  z-index: 1;
}
.page-about .timeline-item details summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding: 20px 44px 20px 58px;
  position: relative;
}
.page-about .timeline-item details summary::-webkit-details-marker {
  display: none;
}
.page-about .timeline-item details summary::after {
  content: "+";
  position: absolute;
  top: 18px;
  right: 16px;
  font-family: var(--font-heading);
  font-size: 20px;
  line-height: 1;
  color: var(--electric-blue);
  transition: transform 0.2s ease;
}
.page-about .timeline-item details[open] summary::after {
  content: "–";
}
.page-about .timeline-year {
  font-family: var(--font-heading);
  font-size: 30px;
  line-height: 1;
  background-image: linear-gradient(135deg, #00d4ff, #00ff88);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  white-space: nowrap;
}
.page-about .timeline-title {
  font-weight: 600;
  font-size: 14px;
  color: var(--text-bright);
}
.page-about .timeline-detail {
  padding: 0 16px 20px 58px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.65;
}
.page-about .timeline-detail p {
  margin: 0;
}
.page-about .scale-board {
  margin-top: 36px;
  border: 2px solid var(--purple-edge);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-panel);
  display: grid;
}
.page-about .scale-bg {
  position: relative;
  height: 160px;
  overflow: hidden;
  border: 0;
}
.page-about .scale-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.85;
}
.page-about .scale-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  padding: 0;
}
.page-about .data-tile {
  padding: 24px 14px;
  text-align: center;
  border-bottom: 1px solid rgba(123, 47, 247, 0.35);
  border-right: 1px solid rgba(123, 47, 247, 0.35);
}
.page-about .data-tile:nth-child(2n) {
  border-right: 0;
}
.page-about .data-tile:nth-child(n+3) {
  border-bottom: 0;
}
.page-about .data-value {
  font-family: var(--font-heading);
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1;
  background-image: linear-gradient(135deg, #00d4ff, #00ff88);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: block;
}
.page-about .data-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 8px;
  display: block;
}
.page-about .scale-note {
  margin-top: 24px;
  padding: 18px 20px;
  border-left: 3px solid var(--neon-green);
  background: rgba(0, 255, 136, 0.06);
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.65;
}
.page-about .team-grid {
  margin-top: 36px;
  display: grid;
  gap: 28px;
}
.page-about .team-figure {
  border-radius: var(--radius-lg);
  min-height: 220px;
}
.page-about .team-content p {
  margin-bottom: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  font-size: 15px;
}
.page-about .badges {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}
.page-about .badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: var(--bg-deep);
  border: 1px solid var(--gold-dot);
  border-radius: var(--radius-md);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.page-about .badge:hover,
.page-about .badge:focus-within {
  box-shadow: 0 0 26px rgba(255, 215, 0, 0.4);
  transform: translateY(-3px);
}
.page-about .badge-icon {
  color: var(--gold-dot);
  flex: 0 0 auto;
}
.page-about .badge-text {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-bright);
}
.page-about .honor-grid {
  margin-top: 36px;
  display: grid;
  gap: 20px;
}
.page-about .honor-card {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid rgba(123, 47, 247, 0.45);
  border-radius: var(--radius-lg);
  padding: 26px 24px 22px;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.page-about .honor-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--neon-green), var(--electric-blue));
  opacity: 0.7;
}
.page-about .honor-card:hover {
  border-color: var(--electric-blue);
  box-shadow: var(--shadow-card), 0 0 20px rgba(0, 212, 255, 0.18);
}
.page-about .honor-year {
  font-family: var(--font-heading);
  font-size: 46px;
  line-height: 1;
  background-image: linear-gradient(135deg, #ffd700, #ffb800);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: block;
  margin-bottom: 12px;
}
.page-about .honor-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 8px;
}
.page-about .honor-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 0;
}
.page-about .honor-cta {
  margin-top: 40px;
  padding: 26px 24px;
  border: 1px solid var(--electric-blue);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(0, 255, 136, 0.08));
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.page-about .honor-cta p {
  margin: 0;
  max-width: 640px;
  font-size: 15px;
  color: var(--text-bright);
  line-height: 1.6;
}
.page-about .cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
@media (min-width: 900px) {
  .page-about .hero-grid {
    display: grid;
    grid-template-columns: 1.7fr 1fr;
    gap: 48px;
    align-items: end;
  }
  .page-about .hero-side {
    margin-top: 0;
  }
  .page-about .mission-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
  }
  .page-about .timeline {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    padding-top: 30px;
  }
  .page-about .timeline::before {
    left: 12.5%;
    right: 12.5%;
    top: 24px;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--electric-blue), var(--neon-green), var(--purple-edge));
    opacity: 0.6;
  }
  .page-about .timeline-item {
    padding: 0;
    background: transparent;
    border: 0;
  }
  .page-about .timeline-item::before {
    left: 50%;
    top: -6px;
    transform: translateX(-50%);
  }
  .page-about .timeline-item details summary {
    background: var(--bg-panel);
    border: 1px solid rgba(123, 47, 247, 0.45);
    border-radius: var(--radius-md);
    padding: 24px 20px 20px;
  }
  .page-about .timeline-item details[open] summary {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    border-color: var(--neon-green);
  }
  .page-about .timeline-item details summary::after {
    top: 12px;
    right: 12px;
  }
  .page-about .timeline-detail {
    padding: 14px 20px 20px;
    background: var(--bg-panel);
    border: 1px solid rgba(123, 47, 247, 0.3);
    border-top: 0;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
  }
  .page-about .scale-board {
    grid-template-columns: 1.2fr 1fr;
    align-items: stretch;
  }
  .page-about .scale-bg {
    height: auto;
    min-height: 320px;
  }
  .page-about .scale-stats {
    padding: 24px;
    align-content: center;
    background: rgba(10, 14, 20, 0.6);
  }
  .page-about .data-tile {
    text-align: left;
  }
  .page-about .team-grid {
    grid-template-columns: 0.8fr 1.2fr;
    align-items: center;
    gap: 40px;
  }
  .page-about .honor-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}