.page-about {
  --about-gold-line: rgba(211, 175, 55, 0.42);
  --about-gold-bg: rgba(211, 175, 55, 0.08);
  overflow-x: clip;
  background:
    radial-gradient(ellipse 72% 44% at 88% -4%, rgba(211, 175, 55, 0.09), transparent 62%),
    radial-gradient(ellipse 55% 36% at 6% 30%, rgba(0, 229, 255, 0.06), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, #0D1425 38%, var(--bg) 100%);
}

.page-about .breadcrumb {
  padding-top: 24px;
}

.page-about .brand-position {
  position: relative;
  padding: 44px 0 80px;
}

.page-about .brand-position__bg {
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  object-fit: cover;
  opacity: 0.24;
  z-index: 0;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 52%, #000 100%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 52%, #000 100%);
}

.page-about .brand-position__skew {
  position: absolute;
  top: 0;
  right: 0;
  width: 54%;
  height: 100%;
  background: linear-gradient(120deg, transparent 0%, rgba(0, 229, 255, 0.05) 50%, rgba(211, 175, 55, 0.11) 100%);
  clip-path: polygon(24% 0, 100% 0, 100% 100%, 4% 100%);
  z-index: 1;
  pointer-events: none;
}

.page-about .brand-position::after {
  content: "";
  position: absolute;
  top: 34px;
  right: 7%;
  width: 180px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--secondary) 55%, var(--primary));
  transform: rotate(-18deg);
  opacity: 0.55;
  z-index: 3;
  pointer-events: none;
}

.page-about .brand-position__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
}

.page-about .brand-position__title {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1.04;
  margin: 14px 0 20px;
  color: var(--text-primary);
}

.page-about .brand-position__lede {
  max-width: 780px;
  color: var(--text-secondary);
}

.page-about .brand-position__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 34px;
}

.page-about .data-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 18px 16px 16px;
  position: relative;
  overflow: hidden;
}

.page-about .data-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
  opacity: 0.75;
}

.page-about .data-card:nth-child(2)::before {
  background: var(--secondary);
}

.page-about .data-card:nth-child(3)::before {
  background: var(--gold);
}

.page-about .data-card__label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.page-about .data-card__value {
  display: block;
  font-family: var(--font-data);
  font-weight: 500;
  font-size: clamp(20px, 5.2vw, 36px);
  line-height: 1.1;
  color: var(--primary);
  margin: 8px 0 4px;
  font-variant-numeric: tabular-nums;
}

.page-about .data-card:nth-child(2) .data-card__value {
  color: var(--secondary);
}

.page-about .data-card:nth-child(3) .data-card__value {
  color: var(--gold);
}

.page-about .data-card__note {
  font-size: 13px;
  line-height: 1.4;
  color: var(--text-secondary);
}

.page-about .brand-position__aside {
  display: grid;
  gap: 18px;
  align-content: end;
}

.page-about .brand-position__statement {
  position: relative;
  background: rgba(19, 26, 42, 0.78);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-left: 2px solid var(--gold);
  padding: 26px 24px 26px 28px;
  transform: skew(-2deg, 0);
}

.page-about .brand-position__statement > * {
  transform: skew(2deg, 0);
}

.page-about .brand-position__statement h2 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  margin: 8px 0 10px;
  color: var(--text-primary);
}

.page-about .brand-position__statement p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.66;
  margin: 0;
}

.page-about .brand-position__statement-index {
  font-family: var(--font-data);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-about .brand-position__milestone {
  background: linear-gradient(135deg, var(--about-gold-bg), rgba(11, 15, 23, 0.7));
  border: 1px solid var(--about-gold-line);
  padding: 22px 24px;
  transform: skew(-2deg, 0);
}

.page-about .brand-position__milestone > * {
  transform: skew(2deg, 0);
}

.page-about .brand-position__milestone p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.62;
  margin: 10px 0 0;
}

.page-about .section-head {
  margin-bottom: 36px;
}

.page-about .section-head .lead {
  max-width: 720px;
}

.page-about .timeline__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 38px;
  align-items: start;
}

.page-about .timeline__visual {
  position: relative;
  overflow: hidden;
  min-height: 220px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-about .timeline__visual-img {
  display: block;
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.page-about .timeline__visual-overlay {
  position: absolute;
  right: 20px;
  bottom: 22px;
  display: flex;
  align-items: baseline;
  gap: 10px;
  background: rgba(11, 15, 23, 0.84);
  border-left: 3px solid var(--gold);
  padding: 12px 18px;
}

.page-about .timeline__visual-count {
  font-family: var(--font-data);
  font-size: 42px;
  line-height: 1;
  color: var(--gold);
}

.page-about .timeline__visual-overlay span {
  color: var(--text-primary);
  font-size: 14px;
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  top: 2px;
  bottom: 14px;
  left: 7px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), var(--secondary) 45%, var(--primary) 100%);
  opacity: 0.55;
}

.page-about .timeline__item {
  position: relative;
  padding-left: 38px;
  padding-bottom: 30px;
}

.page-about .timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 15px;
  height: 15px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--gold);
}

.page-about .timeline__item:nth-child(3n + 2)::before {
  border-color: var(--secondary);
}

.page-about .timeline__item:nth-child(3n)::before {
  border-color: var(--primary);
}

.page-about .timeline__index {
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .timeline__content h3 {
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.2;
  font-weight: 600;
  margin: 6px 0 8px;
  color: var(--text-primary);
}

.page-about .timeline__content p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.64;
  margin: 0;
}

.page-about .qualification__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .qualification__card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 26px 24px;
  transition: transform 0.32s var(--ease), border-color 0.32s var(--ease), background 0.32s var(--ease);
}

.page-about .qualification__card:hover {
  transform: translateY(-5px);
  border-color: var(--about-gold-line);
  background: linear-gradient(145deg, rgba(211, 175, 55, 0.06), var(--surface) 62%);
}

.page-about .qualification__card--main {
  background:
    linear-gradient(135deg, rgba(211, 175, 55, 0.12), transparent 48%),
    var(--surface);
  border-color: var(--about-gold-line);
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 220px;
}

.page-about .qualification__badge {
  align-self: flex-start;
  display: inline-block;
  background: var(--about-gold-bg);
  border: 1px solid var(--about-gold-line);
  color: var(--gold);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 12px;
}

.page-about .qualification__card-title {
  font-size: 19px;
  font-weight: 600;
  margin: 16px 0 0;
  color: var(--text-primary);
}

.page-about .qualification__icp {
  font-family: var(--font-data);
  font-size: 23px;
  line-height: 1.2;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--gold);
  margin: 10px 0 6px;
}

.page-about .qualification__detail {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
  margin: 2px 0 0;
}

.page-about .qualification__num {
  position: absolute;
  top: 22px;
  right: 24px;
  font-family: var(--font-data);
  font-size: 15px;
  color: var(--gold);
  opacity: 0.85;
}

.page-about .qualification__card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.page-about .qualification__card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.62;
  margin: 0;
}

.page-about .partners__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .partners__col {
  position: relative;
  border: 1px solid var(--border);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.025), rgba(11, 15, 23, 0.35));
  padding: 26px 24px 28px;
  overflow: hidden;
}

.page-about .partners__col::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 130px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary));
  opacity: 0.55;
}

.page-about .partners__col:nth-child(2)::after {
  background: linear-gradient(90deg, transparent, var(--secondary));
}

.page-about .partners__col:nth-child(3)::after {
  background: linear-gradient(90deg, transparent, var(--gold));
}

.page-about .partners__index {
  position: absolute;
  top: 18px;
  right: 22px;
  font-family: var(--font-data);
  font-size: 34px;
  line-height: 1;
  font-weight: 600;
  color: var(--primary);
  opacity: 0.28;
}

.page-about .partners__col:nth-child(2) .partners__index {
  color: var(--secondary);
}

.page-about .partners__col:nth-child(3) .partners__index {
  color: var(--gold);
}

.page-about .partners__col:nth-child(4) .partners__index {
  color: var(--text-secondary);
}

.page-about .partners__col h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 8px;
}

.page-about .partners__count {
  font-family: var(--font-data);
  font-size: 30px;
  line-height: 1;
  font-weight: 500;
  color: var(--primary);
  margin: 0 0 16px;
}

.page-about .partners__col:nth-child(2) .partners__count {
  color: var(--secondary);
}

.page-about .partners__col:nth-child(3) .partners__count {
  color: var(--gold);
}

.page-about .partners__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .partners__list li {
  position: relative;
  padding-left: 18px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.52;
}

.page-about .partners__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 7px;
  height: 7px;
  background: var(--primary);
  transform: rotate(45deg);
}

.page-about .partners__col:nth-child(2) .partners__list li::before {
  background: var(--secondary);
}

.page-about .partners__col:nth-child(3) .partners__list li::before {
  background: var(--gold);
}

.page-about .partners__col--contact p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.64;
  margin: 0;
}

.page-about .team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}

.page-about .team__media {
  position: relative;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 94% 100%, 0 100%);
}

.page-about .team__media-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.06);
}

.page-about .team__media::after {
  content: "80人 · 杭州 / 上海 / 远程";
  position: absolute;
  bottom: 14px;
  left: 14px;
  background: rgba(11, 15, 23, 0.85);
  border-left: 3px solid var(--gold);
  padding: 8px 14px;
  font-size: 13px;
  color: var(--text-primary);
  max-width: calc(100% - 28px);
}

.page-about .team__content .section-title {
  margin-bottom: 14px;
}

.page-about .team__content .lead {
  color: var(--text-secondary);
}

.page-about .team__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 30px;
}

.page-about .next-steps__card {
  display: grid;
  gap: 16px;
  padding: 36px 28px;
  background:
    linear-gradient(120deg, rgba(198, 255, 61, 0.06), transparent 42%),
    linear-gradient(240deg, rgba(0, 229, 255, 0.06), transparent 42%),
    rgba(19, 26, 42, 0.86);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
}

.page-about .next-steps__card h2 {
  font-size: 28px;
  line-height: 1.15;
  font-weight: 600;
  margin: 0;
  color: var(--text-primary);
}

.page-about .next-steps__card p {
  color: var(--text-secondary);
  margin: 0;
}

.page-about .next-steps__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
}

@media (min-width: 768px) {
  .page-about .brand-position {
    padding-top: 56px;
    padding-bottom: 96px;
  }

  .page-about .brand-position__grid {
    grid-template-columns: 1.35fr 0.65fr;
    gap: 64px;
    align-items: end;
  }

  .page-about .brand-position__aside {
    gap: 20px;
  }

  .page-about .timeline__grid {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }

  .page-about .timeline__visual-img {
    height: 360px;
  }

  .page-about .timeline__visual {
    min-height: 284px;
  }

  .page-about .qualification__grid {
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
  }

  .page-about .qualification__card--main {
    grid-column: span 3;
  }

  .page-about .qualification__card:nth-child(2) {
    grid-column: span 3;
  }

  .page-about .qualification__card:nth-child(3),
  .page-about .qualification__card:nth-child(4),
  .page-about .qualification__card:nth-child(5) {
    grid-column: span 2;
  }

  .page-about .partners__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .partners__col--contact {
    grid-column: span 2;
  }

  .page-about .team__grid {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 64px;
  }

  .page-about .team__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .next-steps__card {
    padding: 44px 40px;
  }
}

@media (min-width: 1200px) {
  .page-about .brand-position__grid {
    gap: 88px;
  }

  .page-about .partners__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .partners__col--contact {
    grid-column: span 1;
  }
}