/* ===== 品牌故事专属样式 ===== */
.page-about {
  --about-hero-skew: 3deg;
  --about-particle-color: rgba(57, 255, 20, 0.25);
  --about-particle-size: 3px;
  --about-timeline-accent: var(--color-accent-green);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding: 1rem 0 0.5rem;
  font-family: Inter, sans-serif;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}
.page-about .breadcrumb a {
  color: var(--color-accent-green);
  text-decoration: none;
  transition: color 0.2s;
}
.page-about .breadcrumb a:focus-visible,
.page-about .breadcrumb a:hover {
  color: var(--color-accent-orange);
  outline: 2px solid var(--color-focus-outline);
  outline-offset: 2px;
}
.page-about .breadcrumb .sep {
  color: var(--color-text-secondary);
  user-select: none;
}
.page-about .breadcrumb [aria-current="page"] {
  color: var(--color-text-primary);
  font-weight: 500;
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 2rem 0 3rem;
  background: var(--color-bg-secondary);
  background-image: linear-gradient(160deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 60%, #0D2A4A 100%);
  transform: skewY(calc(var(--about-hero-skew) * -1));
  transform-origin: left center;
  margin-bottom: 2rem;
}
.page-about .about-hero > * {
  transform: skewY(var(--about-hero-skew));
}
.page-about .hero-inner {
  position: relative;
  z-index: 2;
  text-align: center;
}
.page-about .hero-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}
.page-about .hero-particles::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(var(--about-particle-size) var(--about-particle-size) at 10% 20%, var(--about-particle-color) 0%, transparent 100%),
    radial-gradient(var(--about-particle-size) var(--about-particle-size) at 25% 60%, var(--about-particle-color) 0%, transparent 100%),
    radial-gradient(4px 4px at 40% 10%, rgba(255, 111, 0, 0.2) 0%, transparent 100%),
    radial-gradient(var(--about-particle-size) var(--about-particle-size) at 55% 80%, var(--about-particle-color) 0%, transparent 100%),
    radial-gradient(var(--about-particle-size) var(--about-particle-size) at 70% 30%, var(--about-particle-color) 0%, transparent 100%),
    radial-gradient(4px 4px at 85% 70%, rgba(255, 111, 0, 0.15) 0%, transparent 100%),
    radial-gradient(var(--about-particle-size) var(--about-particle-size) at 15% 90%, var(--about-particle-color) 0%, transparent 100%),
    radial-gradient(var(--about-particle-size) var(--about-particle-size) at 92% 15%, var(--about-particle-color) 0%, transparent 100%),
    radial-gradient(5px 5px at 48% 45%, rgba(57, 255, 20, 0.1) 0%, transparent 100%),
    radial-gradient(var(--about-particle-size) var(--about-particle-size) at 35% 75%, var(--about-particle-color) 0%, transparent 100%),
    radial-gradient(3px 3px at 65% 55%, rgba(57, 255, 20, 0.3) 0%, transparent 100%),
    radial-gradient(var(--about-particle-size) var(--about-particle-size) at 78% 88%, var(--about-particle-color) 0%, transparent 100%);
  background-size: 200% 200%;
  animation: particleDrift 16s ease-in-out infinite alternate;
}
@keyframes particleDrift {
  0% { background-position: 0% 0%; }
  100% { background-position: 100% 100%; }
}
.page-about .hero-title {
  font-family: Anton, sans-serif;
  font-size: clamp(2.8rem, 12vw, 6rem);
  line-height: 1;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text-primary);
  margin: 0 0 0.2rem;
  text-shadow: 0 0 30px rgba(57, 255, 20, 0.15);
}
.page-about .hero-subtitle {
  font-family: Anton, sans-serif;
  font-size: clamp(1.2rem, 4vw, 2rem);
  line-height: 1.2;
  color: var(--color-accent-green);
  margin: 0 0 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.page-about .hero-summary {
  font-family: Inter, sans-serif;
  font-size: clamp(0.95rem, 2.2vw, 1.15rem);
  line-height: 1.6;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto 1.5rem;
  padding: 0 1rem;
}
.page-about .hero-fig {
  display: block;
  width: 100%;
  max-width: 1000px;
  height: auto;
  margin: 0 auto;
  border-radius: 8px;
  box-shadow: 0 8px 40px rgba(57, 255, 20, 0.08);
  object-fit: cover;
}

/* ---------- 通用章节 ---------- */
.page-about .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.2rem;
}
.page-about .section-title {
  font-family: Anton, sans-serif;
  font-size: clamp(2rem, 6vw, 3.2rem);
  line-height: 1.1;
  text-transform: uppercase;
  color: var(--color-text-primary);
  margin: 0 0 1.2rem;
  letter-spacing: 0.02em;
  position: relative;
  display: inline-block;
}
.page-about .section-title::after {
  content: "";
  display: block;
  width: 60%;
  height: 4px;
  background: var(--color-accent-green);
  margin-top: 0.3rem;
  box-shadow: 0 0 12px var(--color-glow-green);
}

/* ---------- 使命 ---------- */
.page-about .about-mission {
  padding: 2.5rem 0;
}
.page-about .mission-block {
  background: var(--color-bg-card);
  border-left: 4px solid var(--color-accent-green);
  border-radius: 0 12px 12px 0;
  padding: 1.8rem 1.5rem;
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}
.page-about .mission-body p {
  font-family: Inter, sans-serif;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text-primary);
  margin: 0 0 1rem;
}
.page-about .mission-body p:last-child {
  margin-bottom: 0;
}
.page-about .mission-body {
  max-width: 780px;
}

/* ---------- 核心价值 ---------- */
.page-about .about-values {
  padding: 2.5rem 0;
  position: relative;
}
.page-about .values-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
  margin-bottom: 2rem;
}
.page-about .value-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-green-dark);
  border-radius: 10px;
  padding: 1.5rem 1.2rem;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.2s;
}
.page-about .value-card:focus-within,
.page-about .value-card:hover {
  border-color: var(--color-accent-green);
  box-shadow: 0 0 20px var(--color-glow-green);
  transform: translateY(-2px);
}
.page-about .value-icon {
  display: inline-block;
  font-family: JetBrains Mono, monospace;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-accent-orange);
  line-height: 1;
  margin-bottom: 0.4rem;
  letter-spacing: -0.04em;
}
.page-about .value-name {
  font-family: Anton, sans-serif;
  font-size: 1.3rem;
  text-transform: uppercase;
  color: var(--color-text-primary);
  margin: 0 0 0.3rem;
  letter-spacing: 0.04em;
}
.page-about .value-desc {
  font-family: Inter, sans-serif;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--color-text-secondary);
  margin: 0;
}
.page-about .values-mobile {
  display: block;
  width: 100%;
  max-width: 240px;
  height: auto;
  margin: 0 auto;
  border-radius: 12px;
  box-shadow: 0 6px 30px rgba(57, 255, 20, 0.06);
  object-fit: cover;
  border: 1px solid var(--color-border-green-dark);
}

/* ---------- 服务范围 ---------- */
.page-about .about-services {
  padding: 2.5rem 0;
}
.page-about .services-wrap {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.page-about .services-text {
  flex: 1;
}
.page-about .services-text p {
  font-family: Inter, sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-primary);
  margin: 0 0 1.2rem;
}
.page-about .services-text strong.text-accent {
  color: var(--color-accent-green);
  font-family: JetBrains Mono, monospace;
  font-size: 1.1em;
}
.page-about .league-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 0.9rem;
}
.page-about .league-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: Inter, sans-serif;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  padding: 0.25rem 0.6rem 0.25rem 0.4rem;
  border: 1px solid var(--color-border-green-dark);
  border-radius: 20px;
  background: var(--color-bg-card);
  cursor: default;
  transition: border-color 0.25s, background 0.25s, color 0.25s;
  position: relative;
}
.page-about .league-item:hover,
.page-about .league-item:focus-within {
  border-color: var(--color-accent-green);
  background: rgba(57, 255, 20, 0.06);
  color: var(--color-text-primary);
}
.page-about .league-item::after {
  content: attr(title);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) scale(0.9);
  background: var(--color-bg-secondary);
  color: var(--color-accent-green);
  font-family: Inter, sans-serif;
  font-size: 0.78rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  border: 1px solid var(--color-border-green-light);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
}
.page-about .league-item:hover::after,
.page-about .league-item:focus-within::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}
.page-about .league-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent-green);
  box-shadow: 0 0 6px var(--color-glow-green);
  flex-shrink: 0;
}
.page-about .services-fig {
  display: block;
  width: 100%;
  max-width: 700px;
  height: auto;
  margin: 0 auto;
  border-radius: 10px;
  box-shadow: 0 6px 30px rgba(0,0,0,0.3);
  object-fit: cover;
  border: 1px solid var(--color-border-green-dark);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  padding: 2.5rem 0;
}
.page-about .timeline-track {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
  padding-left: 1.8rem;
}
.page-about .timeline-track::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border-green);
  box-shadow: 0 0 8px var(--color-glow-green);
}
.page-about .timeline-node {
  position: relative;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.page-about .node-marker {
  position: absolute;
  left: calc(-1.8rem + 1px);
  top: 0.3rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-bg-primary);
  border: 2px solid var(--color-accent-green);
  box-shadow: 0 0 12px var(--color-glow-green);
  flex-shrink: 0;
  transform: translateX(-50%);
}
.page-about .node-content {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-green-dark);
  border-radius: 10px;
  padding: 1rem 1.2rem;
  flex: 1;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.page-about .node-content:hover,
.page-about .node-content:focus-within {
  border-color: var(--color-accent-green);
  box-shadow: 0 0 18px var(--color-glow-green);
}
.page-about .node-title {
  font-family: Anton, sans-serif;
  font-size: 1.1rem;
  text-transform: uppercase;
  color: var(--color-accent-orange);
  margin: 0 0 0.25rem;
  letter-spacing: 0.04em;
}
.page-about .node-desc {
  font-family: Inter, sans-serif;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--color-text-secondary);
  margin: 0;
}

/* ---------- 内链 ---------- */
.page-about .about-links {
  padding: 2.5rem 0 3.5rem;
}
.page-about .links-intro {
  font-family: Inter, sans-serif;
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin: 0 0 1.2rem;
  text-align: center;
}
.page-about .links-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem 1rem;
}
.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.6rem;
  font-family: Inter, sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 6px;
  transition: background 0.25s, color 0.25s, box-shadow 0.25s, transform 0.2s;
  cursor: pointer;
  border: none;
  line-height: 1.2;
}
.page-about .btn:focus-visible {
  outline: 2px solid var(--color-focus-outline);
  outline-offset: 3px;
}
.page-about .btn-accent {
  background: transparent;
  color: var(--color-accent-green);
  border: 1px solid var(--color-border-green-light);
  box-shadow: 0 0 12px transparent;
}
.page-about .btn-accent:hover,
.page-about .btn-accent:focus-visible {
  background: rgba(57, 255, 20, 0.08);
  box-shadow: 0 0 20px var(--color-glow-green);
  transform: translateY(-1px);
}

/* ---------- data-reveal 动画 ---------- */
.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.page-about [data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 桌面端媒体查询 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 3rem 0 4rem;
    margin-bottom: 3rem;
  }
  .page-about .hero-title {
    margin-bottom: 0.3rem;
  }
  .page-about .hero-summary {
    font-size: 1.15rem;
    margin-bottom: 2rem;
  }
  .page-about .about-mission,
  .page-about .about-values,
  .page-about .about-services,
  .page-about .about-timeline {
    padding: 3.5rem 0;
  }
  .page-about .mission-block {
    padding: 2.5rem 2.5rem;
  }
  .page-about .mission-body p {
    font-size: 1.05rem;
  }
  .page-about .values-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
  .page-about .value-card {
    padding: 1.8rem 1.5rem;
  }
  .page-about .values-mobile {
    max-width: 200px;
    margin: 0 0 0 auto;
  }
  .page-about .services-wrap {
    flex-direction: row;
    align-items: center;
  }
  .page-about .services-fig {
    max-width: 480px;
    flex-shrink: 0;
  }
  .page-about .timeline-track {
    flex-direction: row;
    padding-left: 0;
    padding-top: 2rem;
    gap: 1rem;
  }
  .page-about .timeline-track::before {
    left: 0;
    right: 0;
    top: 8px;
    bottom: auto;
    width: auto;
    height: 2px;
  }
  .page-about .timeline-node {
    flex: 1;
    flex-direction: column;
    align-items: center;
  }
  .page-about .node-marker {
    position: relative;
    left: auto;
    top: auto;
    transform: none;
    margin-bottom: 0.6rem;
  }
  .page-about .node-content {
    width: 100%;
  }
  .page-about .node-title {
    font-size: 1.2rem;
  }
  .page-about .links-group {
    gap: 1rem 1.5rem;
  }
}

@media (min-width: 1024px) {
  .page-about .values-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .about-values .container {
    display: grid;
    grid-template-columns: 1fr 220px;
    gap: 2rem;
  }
  .page-about .about-values .section-title {
    grid-column: 1 / -1;
  }
  .page-about .values-grid {
    grid-column: 1;
    margin-bottom: 0;
  }
  .page-about .values-mobile {
    grid-column: 2;
    grid-row: 2 / 4;
    max-width: 100%;
    align-self: center;
  }
  .page-about .services-fig {
    max-width: 560px;
  }
  .page-about .timeline-track {
    gap: 1.5rem;
  }
  .page-about .hero-fig {
    max-width: 900px;
  }
}