.page-about {
  display: block;
  background-color: var(--ink-900);
  color: var(--bone);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 32px 0 0;
  background-color: var(--ink-900);
  background-image:
    radial-gradient(120% 80% at 88% 6%, rgba(226, 118, 46, 0.20), transparent 58%),
    radial-gradient(90% 70% at 6% 96%, rgba(55, 242, 201, 0.10), transparent 60%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -24%;
  right: -12%;
  width: 62%;
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle, rgba(255, 158, 77, 0.24), transparent 68%);
  pointer-events: none;
  animation: about-breathe 6s ease-in-out infinite;
}

@keyframes about-breathe {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 0.88; transform: scale(1.06); }
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
  padding-bottom: 52px;
}

.page-about .about-hero-copy .breadcrumb {
  margin-bottom: 22px;
}

.page-about .about-hero-copy h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 8vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--bone);
}

.page-about .about-hero-copy .lede {
  margin-top: 20px;
  max-width: 62ch;
  font-size: 1.0625rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero-stats li {
  padding: 16px 18px;
  border: 1px solid var(--ink-600);
  border-radius: var(--r-lg);
  background-color: rgba(19, 28, 51, 0.72);
}

.page-about .about-stat-num {
  display: block;
  font-size: 1.75rem;
  line-height: 1.1;
  color: var(--neon);
  letter-spacing: -0.02em;
}

.page-about .about-stat-unit {
  font-size: 0.9rem;
  margin-left: 2px;
  color: var(--neon-soft);
}

.page-about .about-stat-label {
  display: block;
  margin-top: 6px;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-about .about-hero-visual {
  position: relative;
  margin: 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--ink-600);
  box-shadow: 0 24px 48px -28px rgba(0, 0, 0, 0.85);
}

.page-about .about-hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-about .about-hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, transparent 42%, rgba(10, 16, 32, 0.72) 100%);
  pointer-events: none;
}

/* ---------- 锚点带 ---------- */

.page-about .about-anchors {
  position: relative;
  z-index: 2;
  background-color: var(--ink-800);
  border-top: 1px solid var(--ink-600);
  border-bottom: 1px solid var(--ink-600);
}

.page-about .about-anchor-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 14px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-anchor-list::-webkit-scrollbar {
  display: none;
}

.page-about .about-anchor-list a {
  display: inline-block;
  padding: 8px 16px;
  border-radius: var(--pill);
  border: 1px solid var(--ink-600);
  font-size: 0.8125rem;
  letter-spacing: 0.05em;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .about-anchor-list a:hover,
.page-about .about-anchor-list a:focus-visible {
  color: var(--ink-900);
  background-color: var(--neon);
  border-color: var(--neon);
}

/* ---------- 通用区块 ---------- */

.page-about .about-band {
  padding: 60px 0;
}

.page-about .about-band--bone {
  background-color: var(--bone);
  color: var(--ink-900);
}

.page-about .about-band--ink {
  background-color: var(--ink-800);
  color: var(--bone);
}

.page-about .about-band h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 5.4vw, 2.4rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.page-about .about-band--bone .eyebrow { color: var(--brand); }
.page-about .about-band--bone p { color: var(--ink-600); }
.page-about .about-band--ink p { color: var(--mist); }

/* ---------- 品牌起点 ---------- */

.page-about .about-origin-grid {
  display: grid;
  gap: 26px;
}

.page-about .about-origin-body {
  display: grid;
  gap: 18px;
  max-width: 62ch;
}

.page-about .about-origin-body p {
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.85;
}

.page-about .about-pullquote {
  margin: 8px 0 0;
  padding: 20px 0 20px 22px;
  border-left: 3px solid var(--brand);
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1.7;
  color: var(--ink-800);
}

/* ---------- 主场三件事 ---------- */

.page-about .about-lanes {
  padding-top: 0;
}

.page-about .about-lanes-head {
  margin-bottom: 34px;
}

.page-about .about-lanes-head > p {
  margin: 0;
  max-width: 40ch;
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-about .about-lane-list {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: about-lane;
}

.page-about .about-lane {
  position: relative;
  padding: 26px 24px 28px;
  border: 1px solid var(--sand);
  border-radius: var(--r-xl);
  background-color: #FBF8F1;
  overflow: hidden;
}

.page-about .about-lane::before {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  width: 46px;
  height: 4px;
  border-radius: 0 0 4px 4px;
  background: linear-gradient(90deg, var(--brand), var(--brand-lift));
}

.page-about .about-lane-num {
  display: block;
  font-size: 2rem;
  line-height: 1;
  color: var(--sand);
  letter-spacing: -0.03em;
}

.page-about .about-lane h3 {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-about .about-lane p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--ink-600);
}

/* ---------- 团队与数据能力 ---------- */

.page-about .about-team {
  background-image: linear-gradient(180deg, rgba(55, 242, 201, 0.06), transparent 42%);
}

.page-about .about-team-grid {
  display: grid;
  gap: 30px;
}

.page-about .about-team-media {
  margin: 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--ink-600);
}

.page-about .about-team-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 11 / 8;
  object-fit: cover;
}

.page-about .about-team-copy p {
  margin: 16px 0 0;
  max-width: 60ch;
  font-size: 1rem;
  line-height: 1.85;
}

.page-about .about-team-bars-wrap {
  margin-top: 40px;
  padding-top: 26px;
  border-top: 1px solid var(--ink-600);
}

.page-about .about-bars-title {
  margin: 0 0 18px;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .about-team-bars {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-team-bar {
  display: grid;
  grid-template-columns: 5.5rem 1fr 2.75rem;
  align-items: center;
  gap: 12px;
}

.page-about .about-team-bar-label {
  font-size: 0.8125rem;
  color: var(--bone);
}

.page-about .about-team-bar-track {
  position: relative;
  display: block;
  height: 12px;
  border-radius: var(--pill);
  background-color: rgba(34, 48, 79, 0.9);
  overflow: hidden;
}

.page-about .about-team-bar-fill {
  display: block;
  height: 100%;
  border-radius: var(--pill);
  background: linear-gradient(90deg, var(--brand), var(--brand-lift));
  transition: transform var(--dur) var(--ease);
  transform-origin: left center;
}

.page-about .about-team-bar--a .about-team-bar-fill { width: 100%; }
.page-about .about-team-bar--b .about-team-bar-fill { width: 68%; }
.page-about .about-team-bar--c .about-team-bar-fill { width: 41%; background: linear-gradient(90deg, var(--neon-soft), var(--neon)); }
.page-about .about-team-bar--d .about-team-bar-fill { width: 100%; }

.page-about .about-team-bar-num {
  text-align: right;
  font-size: 1.05rem;
  color: var(--neon);
}

/* ---------- 发展节奏 ---------- */

.page-about .about-timeline-head {
  margin-bottom: 12px;
}

.page-about .about-timeline-lede {
  margin: 16px 0 0;
  max-width: 56ch;
  font-size: 1rem;
  line-height: 1.8;
}

.page-about .about-axis {
  display: none;
  width: 100%;
  height: 150px;
}

.page-about .about-stages {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stage {
  position: relative;
  padding: 0 0 28px 30px;
  border-left: 1px solid var(--sand);
}

.page-about .about-stage:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-stage::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background-color: var(--brand);
}

.page-about .about-stage--now::before {
  background-color: var(--neon);
  box-shadow: 0 0 0 5px rgba(55, 242, 201, 0.18);
}

.page-about .about-stage-year {
  display: inline-block;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--brand);
}

.page-about .about-stage h3 {
  margin: 8px 0 8px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-about .about-stage p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--ink-600);
}

/* ---------- 资质与荣誉 ---------- */

.page-about .about-cred-grid {
  display: grid;
  gap: 30px;
}

.page-about .about-cred-lead p {
  margin: 16px 0 0;
  max-width: 42ch;
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-about .about-cred-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-cred-item {
  padding: 22px 22px 24px;
  border: 1px solid var(--ink-600);
  border-radius: var(--r-lg);
  background-color: rgba(10, 16, 32, 0.5);
}

.page-about .about-cred-tag {
  display: inline-block;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--neon);
  border: 1px solid rgba(55, 242, 201, 0.35);
  border-radius: var(--pill);
  padding: 3px 10px;
}

.page-about .about-cred-item h3 {
  margin: 14px 0 10px;
  font-family: var(--font-serif);
  font-size: 1.125rem;
  line-height: 1.55;
  color: var(--bone);
}

.page-about .about-cred-item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
}

/* ---------- 合作生态 ---------- */

.page-about .about-partners-head p {
  margin: 16px 0 0;
  max-width: 68ch;
  font-size: 1rem;
  line-height: 1.85;
}

.page-about .about-partners-media {
  margin: 30px 0 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--sand);
}

.page-about .about-partners-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-partner-board {
  margin-top: 34px;
}

.page-about .about-partner-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.page-about .about-partners .filter-chip {
  background-color: transparent;
  border: 1px solid var(--sand);
  color: var(--ink-800);
  border-radius: var(--pill);
  padding: 8px 18px;
  font-size: 0.8125rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-partners .filter-chip:hover,
.page-about .about-partners .filter-chip:focus-visible {
  border-color: var(--brand);
  color: var(--brand);
}

.page-about .about-partners .filter-chip.is-active {
  background-color: var(--brand);
  border-color: var(--brand);
  color: #FFF7EC;
}

.page-about .about-partner-stage {
  display: grid;
  gap: 14px;
}

.page-about .about-partner-card {
  padding: 22px 22px 24px;
  border: 1px solid var(--sand);
  border-radius: var(--r-lg);
  background-color: #FBF8F1;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-partner-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 34px -24px rgba(10, 16, 32, 0.55);
}

.page-about .about-partner-card h3 {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-about .about-partner-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--ink-600);
}

.page-about .about-partner-board .filter-empty {
  margin: 18px 0 0;
  font-size: 0.9375rem;
  color: var(--ink-600);
}

.page-about .about-open {
  margin-top: 40px;
  padding: 28px 24px 30px;
  border-radius: var(--r-xl);
  border: 1px solid var(--ink-600);
  background-color: var(--ink-900);
  color: var(--bone);
}

.page-about .about-open h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: -0.01em;
}

.page-about .about-open p {
  margin: 0 0 20px;
  max-width: 66ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 收尾 ---------- */

.page-about .about-cta {
  position: relative;
  overflow: hidden;
  background-image:
    radial-gradient(90% 120% at 92% 0%, rgba(226, 118, 46, 0.22), transparent 62%),
    linear-gradient(180deg, var(--ink-800), var(--ink-900));
}

.page-about .about-cta-inner {
  display: grid;
  gap: 26px;
}

.page-about .about-cta-copy h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 5vw, 2.2rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.page-about .about-cta-copy p {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--mist);
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-lane-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-partner-stage {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-band {
    padding: 88px 0;
  }

  .page-about .about-hero {
    padding-top: 48px;
  }

  .page-about .about-hero-inner {
    grid-template-columns: 7fr 5fr;
    align-items: end;
    gap: 52px;
    padding-bottom: 76px;
  }

  .page-about .about-origin-grid {
    grid-template-columns: 5fr 7fr;
    gap: 64px;
    align-items: start;
  }

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

  .page-about .about-team-grid {
    grid-template-columns: 5fr 7fr;
    align-items: center;
    gap: 52px;
  }

  .page-about .about-team-bars-wrap {
    margin-top: 52px;
    padding-top: 34px;
  }

  .page-about .about-team-bars {
    gap: 18px;
  }

  .page-about .about-axis {
    display: block;
    margin: 34px 0 -14px;
  }

  .page-about .about-stages {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 26px;
  }

  .page-about .about-stage {
    padding: 26px 0 0;
    border-left: 0;
    border-top: 1px solid var(--sand);
  }

  .page-about .about-stage:last-child {
    border-top-color: var(--sand);
  }

  .page-about .about-stage::before {
    top: -5px;
    left: 0;
  }

  .page-about .about-cred-grid {
    grid-template-columns: 5fr 7fr;
    gap: 60px;
    align-items: start;
  }

  .page-about .about-partner-stage {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .about-partners-media {
    margin-top: 40px;
  }

  .page-about .about-open {
    padding: 34px 34px 36px;
  }

  .page-about .about-cta-inner {
    grid-template-columns: 7fr 5fr;
    align-items: center;
    gap: 44px;
  }

  .page-about .about-cta-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero-copy h1 {
    font-size: 3.9rem;
  }

  .page-about .about-band h2 {
    font-size: 2.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero::before {
    animation: none;
  }

  .page-about .about-partner-card,
  .page-about .about-anchor-list a,
  .page-about .about-team-bar-fill {
    transition: none;
  }

  .page-about .about-partner-card:hover {
    transform: none;
  }
}