.page-about {
  --about-line: #2A2A33;
  --about-line-light: #3A3A46;
  --about-panel: #14141C;
  --about-green: #00FFA3;
  --about-blue: #00D4FF;
}

.page-about .container {
  position: relative;
  z-index: 1;
}

/* ===== Hero 品牌简介 ===== */
.page-about__hero {
  position: relative;
  padding: 48px 0 40px;
  overflow: hidden;
}

.page-about__hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -60px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.16) 0%, rgba(74, 0, 224, 0.08) 40%, transparent 70%);
  pointer-events: none;
}

.page-about__hero::after {
  content: "";
  position: absolute;
  bottom: 40px;
  left: -40px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 255, 163, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.page-about__breadcrumb {
  margin-bottom: 36px;
}

.page-about__hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.page-about__hero-tag {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--green);
}

.page-about__hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 6vw, 3.6rem);
  font-weight: 800;
  line-height: 1.12;
  margin: 0 0 8px;
  color: var(--text);
  letter-spacing: -0.02em;
}

.page-about__hero-lead {
  font-family: var(--font-heading);
  font-size: clamp(1.05rem, 2.2vw, 1.4rem);
  font-weight: 600;
  color: var(--blue);
  margin: 0 0 22px;
}

.page-about__hero-text {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.85;
  margin-bottom: 26px;
  max-width: 64ch;
}

.page-about__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about__hero-actions .btn {
  min-width: 148px;
  justify-content: center;
}

.page-about__hero-media {
  position: relative;
  border: var(--border-w) solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  min-height: 240px;
  box-shadow: var(--shadow);
}

.page-about__hero-media::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 12px;
  width: 32px;
  height: 32px;
  border-top: 2px solid var(--green);
  border-left: 2px solid var(--green);
  z-index: 2;
  pointer-events: none;
}

.page-about__hero-media::after {
  content: "";
  position: absolute;
  bottom: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border-bottom: 2px solid var(--blue);
  border-right: 2px solid var(--blue);
  z-index: 2;
  pointer-events: none;
}

.page-about__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 36px;
}

.page-about__stat {
  position: relative;
  background: var(--about-panel);
  border: var(--border-w) solid var(--line);
  box-shadow: var(--shadow);
  padding: 20px 16px 18px;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.page-about__stat::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: 18px;
  height: 18px;
  border-top: 3px solid var(--green);
  border-left: 3px solid var(--green);
}

.page-about__stat:hover {
  border-color: var(--green);
  transform: translateY(-3px);
}

.page-about__stat .stat-label {
  display: block;
  margin-top: 8px;
  font-size: 0.78rem;
}

/* ===== 发展时间线 ===== */
.page-about__timeline-section {
  padding: 64px 0;
  background-image:
    linear-gradient(rgba(42, 42, 51, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 42, 51, 0.35) 1px, transparent 1px);
  background-size: 28px 28px;
}

.page-about__section-head {
  margin-bottom: 32px;
  gap: 16px;
}

.page-about__timeline-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.page-about__timeline {
  position: relative;
  padding-left: 28px;
  border-left: 2px solid var(--line);
}

.page-about__timeline-item {
  position: relative;
  padding-bottom: 32px;
}

.page-about__timeline-item:last-child {
  padding-bottom: 0;
}

.page-about__timeline-dot {
  position: absolute;
  left: -9px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--green);
  box-shadow:
    0 0 0 5px rgba(0, 255, 163, 0.12),
    0 0 18px rgba(0, 255, 163, 0.55);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.page-about__timeline-item:hover .page-about__timeline-dot {
  box-shadow:
    0 0 0 8px rgba(0, 255, 163, 0.18),
    0 0 24px rgba(0, 255, 163, 0.75);
  transform: scale(1.1);
}

.page-about__timeline-card {
  background: var(--about-panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--green);
  padding: 20px 20px 18px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about__timeline-item:hover .page-about__timeline-card {
  transform: translateX(4px);
  border-left-color: var(--green);
  border-color: var(--line-light);
  box-shadow: var(--shadow);
}

.page-about__timeline-card .mono-tag {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--green);
}

.page-about__timeline-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text);
}

.page-about__timeline-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin: 0;
}

.page-about__growth-media {
  position: relative;
  border: var(--border-w) solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  min-height: 180px;
  background: var(--about-panel);
  box-shadow: var(--shadow);
}

/* ===== 数据服务能力 ===== */
.page-about__capability-section {
  padding: 64px 0 72px;
}

.page-about__capability-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about__capability-core p,
.page-about__capability-card p {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--text-muted);
  margin-bottom: 0;
}

.page-about__capability-core p {
  font-size: 0.95rem;
}

.page-about__capability-list {
  margin-top: 20px;
  border-top: 1px solid var(--line);
  padding-top: 8px;
}

.page-about__capability-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.page-about__capability-num {
  color: var(--green);
  font-size: 0.82rem;
  min-width: 26px;
}

.page-about__capability-meter {
  margin-top: 22px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.page-about__capability-meter-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.page-about__capability-meter-head .num {
  color: var(--green);
  font-size: 0.9rem;
}

.page-about__capability-meter-bar {
  height: 8px;
  background: var(--line);
  position: relative;
  overflow: hidden;
}

.page-about__capability-meter-fill {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 85%;
  background: linear-gradient(90deg, var(--green), var(--blue));
}

.page-about__capability-meter-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin: 8px 0 0;
}

/* ===== 内容生态 ===== */
.page-about__ecosystem-section {
  padding: 64px 0 72px;
}

.page-about__ecosystem-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: center;
}

.page-about__ecosystem-list {
  margin: 0;
}

.page-about__ecosystem-item {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.3s ease, padding-left 0.3s ease;
}

.page-about__ecosystem-item:first-child {
  border-top: 1px solid var(--line);
}

.page-about__ecosystem-item:hover {
  background: rgba(20, 20, 28, 0.65);
  padding-left: 12px;
}

.page-about__ecosystem-item .num {
  min-width: 30px;
  font-size: 0.82rem;
  color: var(--blue);
  line-height: 1.5;
}

.page-about__ecosystem-item h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--text);
}

.page-about__ecosystem-item p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin: 0;
}

.page-about__ecosystem-media {
  position: relative;
  border: var(--border-w) solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  min-height: 240px;
  background: var(--about-panel);
  box-shadow: var(--shadow);
}

/* ===== 团队与资质 ===== */
.page-about__team-section {
  padding: 64px 0 88px;
}

.page-about__team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about__team-card {
  position: relative;
  background: var(--about-panel);
  border: var(--border-w) solid var(--line);
  padding: 28px 24px 30px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.page-about__team-card::after {
  content: "";
  position: absolute;
  bottom: -2px;
  right: -2px;
  width: 22px;
  height: 22px;
  border-bottom: 3px solid var(--blue);
  border-right: 3px solid var(--blue);
}

.page-about__team-card:hover {
  transform: translateY(-4px);
  border-color: var(--green);
}

.page-about__team-card .mono-tag {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--blue);
}

.page-about__team-card .card-title {
  margin-bottom: 10px;
}

.page-about__team-card p {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--text-muted);
  margin: 0;
}

/* ===== 桌面端布局 ===== */
@media (min-width: 920px) {
  .page-about__hero-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 48px;
  }

  .page-about__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-top: 48px;
  }

  .page-about__stat {
    padding: 24px 20px 20px;
  }

  .page-about__timeline-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 40px;
    align-items: start;
  }

  .page-about__growth-media {
    position: sticky;
    top: 120px;
  }

  .page-about__capability-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-about__capability-grid .bento-card--span-7 {
    grid-column: span 7;
  }

  .page-about__capability-grid .bento-card--span-5 {
    grid-column: span 5;
  }

  .page-about__ecosystem-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
  }

  .page-about__team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about__team-card {
    padding: 32px 28px;
  }
}

/* ===== 减少动态偏好 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}