.page-about {
  --about-grid-line: rgba(0, 229, 255, 0.07);
  --about-track-dim: rgba(0, 229, 255, 0.14);
  --about-track: rgba(0, 229, 255, 0.3);
  --about-neon: rgba(57, 255, 20, 0.55);
  overflow-x: hidden;
}

/* ===== 首屏英雄区 ===== */
.page-about__hero {
  position: relative;
  padding-top: clamp(28px, 6vw, 64px);
  padding-bottom: clamp(44px, 8vw, 88px);
  background:
    radial-gradient(1100px 420px at 85% -10%, rgba(0, 229, 255, 0.14), transparent 70%),
    linear-gradient(var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid-line) 1px, transparent 1px);
  background-size: auto, 44px 44px, 44px 44px;
  overflow: hidden;
}
.page-about__hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 38%, rgba(0, 229, 255, 0.08) 38.4%, rgba(0, 229, 255, 0.08) 39%, transparent 39.4%, transparent 62%, rgba(57, 255, 20, 0.06) 62.4%, transparent 63%);
  pointer-events: none;
}
.page-about__breadcrumb {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(24px, 5vw, 48px);
}
.page-about__hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
  align-items: center;
}
@media (min-width: 860px) {
  .page-about__hero-inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 48px;
  }
}
.page-about__hero-numeral {
  font-family: var(--font-head);
  font-size: clamp(96px, 22vw, 250px);
  font-weight: 900;
  line-height: 0.82;
  letter-spacing: -0.05em;
  background: linear-gradient(135deg, var(--c-primary), var(--c-neon));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 12px 32px rgba(0, 229, 255, 0.18));
}
.page-about__hero-est {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(12px, 1.6vw, 16px);
  font-weight: 400;
  letter-spacing: 0.62em;
  color: var(--c-muted);
  -webkit-text-fill-color: var(--c-muted);
  background: none;
  margin-top: 10px;
}
.page-about__hero-copy h1 {
  font-size: clamp(30px, 5vw, 54px);
  line-height: 1.08;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
  font-weight: 800;
}
.page-about__hero-lead {
  color: var(--c-muted);
  font-size: 1.02rem;
  line-height: 1.7;
  max-width: 56ch;
  margin: 0;
}
.page-about__hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}
.page-about__hero-stat {
  padding: 12px 20px;
  background: rgba(18, 26, 42, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(6px);
}
.page-about__hero-stat-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-primary);
}
.page-about__hero-stat-label {
  font-size: 0.76rem;
  color: var(--c-muted);
  margin-top: 2px;
}

/* ===== 锚点目录 ===== */
.page-about__anchor {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 auto 6px;
  padding: 12px clamp(16px, 3vw, 28px);
  justify-content: center;
}
.page-about__anchor .anchor-index__link {
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background: var(--c-card);
  border: 1px solid var(--line);
  color: var(--c-muted);
  font-size: 0.88rem;
  transition: all 0.3s var(--ease);
}
.page-about__anchor .anchor-index__link:hover,
.page-about__anchor .anchor-index__link:focus-visible {
  color: var(--c-text);
  border-color: var(--line-strong);
  background: rgba(0, 229, 255, 0.08);
}
.page-about__anchor .anchor-index__link.is-active {
  color: var(--c-bg);
  background: var(--grad-brand);
  border-color: transparent;
}

/* ===== 品牌初衷 ===== */
.page-about__origin {
  padding: clamp(52px, 8vw, 96px) 0;
}
.page-about__origin-grid {
  display: grid;
  gap: 36px;
  align-items: center;
}
@media (min-width: 860px) {
  .page-about__origin-grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
  }
}
.page-about__origin .section__head {
  margin-bottom: 18px;
}
.page-about__origin .prose p {
  margin-bottom: 14px;
  color: var(--c-muted);
  line-height: 1.7;
}
.page-about__origin-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
.page-about__origin-metric {
  flex: 1 1 140px;
  min-width: 0;
  padding: 14px 16px;
  background: var(--c-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}
.page-about__origin-metric:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}
.page-about__origin-metric-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-primary);
  line-height: 1.1;
}
.page-about__origin-metric-label {
  display: block;
  font-size: 0.8rem;
  color: var(--c-muted);
  margin-top: 6px;
}
.page-about__origin-frame {
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* ===== 发展里程碑 ===== */
.page-about__milestones {
  padding: clamp(52px, 8vw, 96px) 0;
  position: relative;
  background:
    linear-gradient(135deg, rgba(0, 229, 255, 0.04), transparent 42%),
    var(--c-bg-deep);
}
.page-about__milestones .section__head {
  margin-bottom: 40px;
}
.page-about__timeline {
  position: relative;
  padding: 12px 0;
}
.page-about__timeline-track {
  position: absolute;
  left: 30px;
  top: 24px;
  height: calc(100% - 48px);
  width: 60px;
  transform: translateX(-50%);
  pointer-events: none;
}
.page-about__timeline-items {
  display: grid;
  gap: 40px;
}
.page-about__timeline-item {
  position: relative;
  padding-left: 64px;
}
@media (min-width: 768px) {
  .page-about__timeline-item {
    padding-left: 0;
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 48px;
  }
}
.page-about__timeline-dot {
  position: absolute;
  left: 30px;
  top: 12px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-neon);
  box-shadow:
    0 0 0 5px rgba(57, 255, 20, 0.14),
    0 0 0 1px rgba(57, 255, 20, 0.4),
    0 0 16px rgba(57, 255, 20, 0.5);
  transform: translateX(-50%);
  z-index: 1;
}
@media (min-width: 768px) {
  .page-about__timeline-dot {
    left: 160px;
    top: 24px;
  }
}
.page-about__timeline-year {
  font-family: var(--font-head);
  font-size: 2rem;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1px var(--c-primary);
  line-height: 1;
  margin-bottom: 10px;
}
@media (min-width: 768px) {
  .page-about__timeline-year {
    font-size: 2.5rem;
    text-align: right;
    padding-top: 4px;
    margin-bottom: 0;
  }
}
.page-about__timeline-card {
  padding: 24px 22px;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}
.page-about__timeline-item:hover .page-about__timeline-card {
  transform: translateY(-3px);
  border-color: var(--line-strong);
}
.page-about__timeline-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 8px;
}
.page-about__timeline-card p {
  font-size: 0.95rem;
  color: var(--c-muted);
  line-height: 1.65;
  margin: 0 0 12px;
}
.page-about__timeline-card .badge {
  font-size: 0.76rem;
}
.page-about__timeline-item--now .page-about__timeline-year {
  -webkit-text-stroke: 1px var(--c-neon);
  color: transparent;
}
.page-about__timeline-item--now .card {
  border-color: rgba(0, 229, 255, 0.35);
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.12), rgba(57, 255, 20, 0.05)), var(--c-card);
}
.page-about__timeline-item--now .page-about__timeline-dot {
  width: 17px;
  height: 17px;
  background: var(--c-primary);
  box-shadow:
    0 0 0 5px rgba(0, 229, 255, 0.18),
    0 0 0 1px rgba(0, 229, 255, 0.5),
    0 0 20px rgba(0, 229, 255, 0.7);
}
.page-about__trend-frame {
  aspect-ratio: 2 / 1;
  margin-top: 56px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* ===== 团队与专业实力 ===== */
.page-about__team {
  padding: clamp(52px, 8vw, 96px) 0;
}
.page-about__team .section__head {
  margin-bottom: 40px;
}
.page-about__team-grid {
  gap: 16px;
}
.page-about__team-card {
  padding: 24px;
  height: 100%;
}
.page-about__team-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.page-about__team-card-head h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
}
.page-about__team-card p {
  font-size: 0.92rem;
  color: var(--c-muted);
  line-height: 1.65;
  margin: 0 0 16px;
}
.page-about__team-card .metric {
  margin-top: 16px;
}
.page-about__team-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-about__team-tags .chip {
  padding: 5px 12px;
  background: rgba(0, 229, 255, 0.06);
  border: 1px solid rgba(0, 229, 255, 0.18);
  color: var(--c-muted);
  font-size: 0.78rem;
  border-radius: var(--radius-pill);
  transition: all 0.28s var(--ease);
}
.page-about__team-card:hover .chip,
.page-about__team-card:focus-within .chip {
  background: rgba(0, 229, 255, 0.16);
  border-color: rgba(0, 229, 255, 0.42);
  color: var(--c-text);
}
.page-about__team-frame {
  aspect-ratio: 7 / 4;
  margin-top: 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* ===== 行业认证与荣誉 ===== */
.page-about__honors {
  padding: clamp(52px, 8vw, 96px) 0;
  position: relative;
  background:
    linear-gradient(var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid-line) 1px, transparent 1px);
  background-size: 40px 40px;
}
.page-about__honors .section__head {
  margin-bottom: 40px;
}
.page-about__honor-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 560px) {
  .page-about__honor-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (min-width: 1024px) {
  .page-about__honor-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}
.page-about__honor-card {
  perspective: 1200px;
  min-height: 210px;
  cursor: pointer;
}
.page-about__honor-inner {
  position: relative;
  width: 100%;
  height: 210px;
  transform-style: preserve-3d;
  transition: transform 0.55s var(--ease);
  border-radius: var(--radius);
}
.page-about__honor-card:hover .page-about__honor-inner,
.page-about__honor-card:focus-visible .page-about__honor-inner,
.page-about__honor-card:active .page-about__honor-inner {
  transform: rotateY(180deg);
}
.page-about__honor-front,
.page-about__honor-back {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 22px;
  border-radius: var(--radius);
  background: var(--c-card);
  border: 1px solid var(--line);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
.page-about__honor-front h3 {
  font-size: 1.08rem;
  font-weight: 700;
  margin: 0 0 8px;
}
.page-about__honor-front p {
  font-size: 0.84rem;
  color: var(--c-muted);
  margin: 0;
}
.page-about__honor-back {
  transform: rotateY(180deg);
  border-color: var(--line-strong);
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.12), rgba(57, 255, 20, 0.06)), var(--c-card);
}
.page-about__honor-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 14px;
  border-radius: 14px;
  background: var(--grad-brand);
  color: #0A0E17;
  font-size: 1.15rem;
  border: 2px solid rgba(255, 255, 255, 0.18);
}
.page-about__honor-year {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-neon);
  margin-bottom: 10px;
}
.page-about__honor-back p {
  font-size: 0.86rem;
  color: var(--c-muted);
  line-height: 1.6;
  margin: 0;
  max-width: 24ch;
}

/* ===== CTA ===== */
.page-about__cta {
  padding: clamp(48px, 8vw, 96px) 0;
}
.page-about__cta-panel {
  position: relative;
  padding: clamp(32px, 6vw, 64px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(135deg, rgba(0, 229, 255, 0.16), rgba(57, 255, 20, 0.07)),
    var(--c-bg-deep);
  text-align: center;
  overflow: hidden;
}
.page-about__cta-panel::before {
  content: "";
  position: absolute;
  top: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.2), transparent 70%);
  pointer-events: none;
}
.page-about__cta-panel h2 {
  font-size: clamp(24px, 4vw, 38px);
  font-weight: 800;
  margin: 0 0 10px;
}
.page-about__cta-panel p {
  color: var(--c-muted);
  margin: 0 0 26px;
}
.page-about__cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

/* ===== 图片基础保护 ===== */
.page-about img {
  max-width: 100%;
  height: auto;
}
.page-about .media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-about .media-frame--wide img {
  object-fit: cover;
}