.page-about {
  --about-border: rgba(255, 255, 255, 0.1);
  --about-chip: rgba(255, 255, 255, 0.04);
  --about-line: rgba(255, 255, 255, 0.1);
  --about-blue: #00BFFF;
  --about-yellow: #FFD700;
  --about-pink: #FF4081;
  --about-cyan: #00E5FF;
  background: var(--bg-site);
  color: var(--text-primary);
  overflow-x: hidden;
}

/* ---------- 通用区块标题 ---------- */
.page-about .about-kicker {
  display: block;
  font-family: var(--font-code);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-cyan);
  margin: 0 0 12px;
}

.page-about .about-title {
  font-family: var(--font-heading);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-white);
  margin: 0 0 14px;
}

.page-about .about-title::after {
  content: '';
  display: inline-block;
  width: 14px;
  height: 14px;
  margin-left: 10px;
  vertical-align: baseline;
  background:
    linear-gradient(135deg, var(--color-yellow) 0 45%, transparent 45%),
    linear-gradient(45deg, var(--color-magenta) 0 45%, transparent 45%);
}

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

.page-about .about-desc {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0;
}

/* ---------- 首屏 Hero ---------- */
.page-about .about-hero {
  position: relative;
  padding: 64px 0 80px;
  background:
    radial-gradient(circle at 88% 18%, rgba(255, 64, 129, 0.18) 0, transparent 260px),
    radial-gradient(circle at 62% 86%, rgba(0, 229, 255, 0.14) 0, transparent 280px),
    var(--bg-site);
  border-bottom: 1px solid var(--border-hairline);
  overflow: hidden;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 40px;
  align-items: center;
}

.page-about .about-hero__content {
  min-width: 0;
}

.page-about .about-hero__content .breadcrumb {
  margin-bottom: 28px;
}

.page-about .about-hero__title {
  font-family: var(--font-heading);
  font-size: clamp(30px, 5vw, 54px);
  font-weight: 400;
  line-height: 1.14;
  color: var(--color-white);
  margin: 0 0 22px;
}

.page-about .about-hero__title::after {
  content: '';
  display: block;
  width: 76px;
  height: 6px;
  margin: 20px 0 0;
  background: linear-gradient(90deg, var(--color-yellow), var(--color-magenta), var(--color-cyan));
  transform: skew(-24deg);
  border-radius: 2px;
}

.page-about .about-hero__lead {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0;
}

.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero__visual {
  position: relative;
  z-index: 0;
  min-width: 0;
}

.page-about .about-hero__visual::before {
  content: '';
  position: absolute;
  inset: -16px 18px 18px -16px;
  border: 2px solid var(--color-cyan);
  border-radius: var(--radius);
  transform: rotate(-1.5deg);
  z-index: -1;
}

.page-about .about-hero__visual::after {
  content: '';
  position: absolute;
  inset: 22px -18px -18px 22px;
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.34), rgba(255, 64, 129, 0.22));
  border-radius: var(--radius);
  z-index: -2;
}

.page-about .about-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transform: rotate(1deg);
}

.page-about .about-hero__orb {
  position: absolute;
  right: -30px;
  top: -30px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(106, 13, 173, 0.4);
  filter: blur(48px);
  z-index: -3;
}

/* ---------- 我们是谁 ---------- */
.page-about .about-who {
  padding: 84px 0;
  background: var(--bg-site);
}

.page-about .about-who__grid {
  display: grid;
  gap: 40px;
}

.page-about .about-who__head .about-title {
  margin-bottom: 18px;
}

.page-about .about-who__note {
  border-left: 3px solid var(--color-yellow);
  background: rgba(255, 215, 0, 0.08);
  padding: 14px 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 420px;
}

.page-about .about-who__note p {
  margin: 0;
}

.page-about .about-who__body {
  min-width: 0;
}

.page-about .about-who__lead {
  font-size: 20px;
  line-height: 1.75;
  color: var(--color-white);
  margin: 0 0 18px;
}

.page-about .about-who__body p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin: 0 0 16px;
}

.page-about .about-who__body .btn {
  margin-top: 8px;
}

/* ---------- 数据概览 ---------- */
.page-about .about-stats {
  position: relative;
  padding: 84px 0;
  background:
    linear-gradient(rgba(255, 215, 0, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 215, 0, 0.05) 1px, transparent 1px),
    var(--bg-deep);
  background-size: 36px 36px;
}

.page-about .about-stats__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-stat {
  position: relative;
  padding: 28px 20px 26px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--about-border);
  box-shadow: var(--shadow-card);
  border-radius: var(--radius);
  text-align: center;
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}

.page-about .about-stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.page-about .about-stat::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  border-radius: var(--radius) var(--radius) 0 0;
  transform: skewX(-32deg);
  transform-origin: left bottom;
}

.page-about .about-stat:nth-child(3n + 1)::before {
  background: var(--color-yellow);
}

.page-about .about-stat:nth-child(3n + 2)::before {
  background: var(--color-magenta);
}

.page-about .about-stat:nth-child(3n)::before {
  background: var(--color-cyan);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(38px, 6vw, 54px);
  font-weight: 400;
  line-height: 1;
  color: var(--color-yellow);
}

.page-about .about-stat__num em {
  font-style: normal;
  font-size: 0.58em;
  color: var(--color-magenta);
  margin-left: 4px;
}

.page-about .about-stat__label {
  display: block;
  margin-top: 12px;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

/* ---------- 发展历程 ---------- */
.page-about .about-timeline {
  padding: 84px 0 96px;
  background: var(--color-black);
}

.page-about .about-timeline__intro {
  display: grid;
  gap: 32px;
  margin-bottom: 52px;
}

.page-about .about-timeline__heading {
  min-width: 0;
}

.page-about .about-timeline__figure {
  margin: 0;
  border: 1px solid var(--about-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: #111;
}

.page-about .about-timeline__figure img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-timeline__figure figcaption {
  font-size: 13px;
  color: var(--text-tertiary);
  padding: 10px 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.page-about .about-timeline__track {
  position: relative;
}

.page-about .about-timeline__line {
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-yellow), var(--color-magenta) 48%, var(--color-cyan));
  opacity: 0.5;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 56px;
  margin-bottom: 36px;
}

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

.page-about .about-timeline__node {
  position: absolute;
  left: 21px;
  top: 2px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-black);
  border: 2px solid var(--color-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateX(-50%);
  z-index: 2;
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}

.page-about .about-timeline__node svg {
  width: 18px;
  height: 18px;
  fill: rgba(255, 255, 255, 0.85);
  stroke: rgba(255, 255, 255, 0.85);
  stroke-width: 0.5;
}

.page-about .about-timeline__node:hover,
.page-about .about-timeline__node:focus-visible {
  transform: translateX(-50%) scale(1.1) rotate(-4deg);
  border-color: var(--color-yellow);
  box-shadow: 0 0 0 8px rgba(0, 229, 255, 0.14);
}

.page-about .about-timeline__card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--about-border);
  box-shadow: var(--shadow-card);
  border-radius: var(--radius);
  padding: 20px 22px;
  transition: transform var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}

.page-about .about-timeline__card:hover,
.page-about .about-timeline__item:hover .about-timeline__card {
  transform: translateY(-4px);
  border-color: rgba(255, 215, 0, 0.5);
  box-shadow: var(--shadow-lift);
}

.page-about .about-timeline__year {
  display: inline-block;
  font-family: var(--font-code);
  font-size: 15px;
  color: var(--color-cyan);
  border: 1px solid rgba(0, 229, 255, 0.35);
  border-radius: var(--radius-round);
  padding: 2px 10px;
  margin-bottom: 10px;
}

.page-about .about-timeline__card h3 {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 400;
  color: var(--color-white);
  margin: 0 0 8px;
}

.page-about .about-timeline__card p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0;
}

/* ---------- 斜切分隔带 ---------- */
.page-about .about-rule {
  height: 8px;
  background: linear-gradient(90deg, var(--color-yellow) 0%, var(--color-magenta) 33%, var(--color-cyan) 66%, var(--bg-site) 100%);
  transform: skewY(-1deg) scale(1.02);
  margin: -14px 0 0;
}

/* ---------- 更新与审核机制 ---------- */
.page-about .about-mechanism {
  padding: 84px 0;
  background: var(--bg-site);
}

.page-about .about-mechanism__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-mech {
  position: relative;
  padding: 28px 24px 26px 28px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--about-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}

.page-about .about-mech:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.page-about .about-mech::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--mech-color, var(--color-yellow));
  transform: skewY(-14deg);
  transform-origin: top;
}

.page-about .about-mech--cyan {
  --mech-color: var(--color-cyan);
}

.page-about .about-mech--yellow {
  --mech-color: var(--color-yellow);
}

.page-about .about-mech--magenta {
  --mech-color: var(--color-magenta);
}

.page-about .about-mech--tech {
  --mech-color: var(--color-tech-blue);
}

.page-about .about-mech__no {
  font-family: var(--font-code);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--color-tech-blue);
}

.page-about .about-mech h3 {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 400;
  color: var(--color-white);
  margin: 8px 0 10px;
}

.page-about .about-mech p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0;
}

/* ---------- 团队与组织 ---------- */
.page-about .about-team {
  padding: 84px 0;
  background: var(--bg-deep);
}

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

.page-about .about-team__visual {
  min-width: 0;
  border: 1px solid var(--about-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.page-about .about-team__visual img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-team__content {
  min-width: 0;
}

.page-about .about-team__block {
  margin-bottom: 28px;
  padding: 18px 0 18px 20px;
  border-left: 3px solid var(--color-magenta);
}

.page-about .about-team__block:nth-of-type(2) {
  border-left-color: var(--color-cyan);
}

.page-about .about-team__badge {
  display: inline-block;
  font-family: var(--font-code);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--color-yellow);
  border: 1px solid rgba(255, 215, 0, 0.35);
  padding: 2px 8px;
  border-radius: var(--radius-round);
}

.page-about .about-team__block h3 {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 400;
  color: var(--color-white);
  margin: 10px 0 8px;
}

.page-about .about-team__block p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0;
}

/* ---------- 行业认可 ---------- */
.page-about .about-awards {
  padding: 84px 0;
  background: var(--bg-site);
}

.page-about .about-awards__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-award {
  padding: 32px 28px 28px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--about-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}

.page-about .about-award:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.page-about .about-award__medal {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 64, 129, 0.12);
  border: 2px solid var(--color-magenta);
  margin-bottom: 16px;
  transform: rotate(-4deg);
}

.page-about .about-award:nth-child(2) .about-award__medal {
  border-color: var(--color-yellow);
  background: rgba(255, 215, 0, 0.12);
}

.page-about .about-award__medal svg {
  width: 34px;
  height: 34px;
}

.page-about .about-award__year {
  font-family: var(--font-code);
  font-size: 13px;
  color: var(--text-tertiary);
}

.page-about .about-award h3 {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 400;
  color: var(--color-white);
  margin: 8px 0 10px;
}

.page-about .about-award p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0;
}

.page-about .about-awards__note {
  margin-top: 32px;
  padding: 20px 22px;
  border-left: 3px solid var(--color-cyan);
  background: rgba(0, 229, 255, 0.06);
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

.page-about .about-awards__note p {
  margin: 0;
}

/* ---------- 响应式（≥640px） ---------- */
@media (min-width: 640px) {
  .page-about .about-stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .page-about .about-mechanism__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .page-about .about-awards__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

/* ---------- 响应式（≥900px） ---------- */
@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 88px 0 104px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
  }

  .page-about .about-who {
    padding: 104px 0;
  }

  .page-about .about-who__grid {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 64px;
    align-items: start;
  }

  .page-about .about-who__head {
    position: sticky;
    top: 32px;
  }

  .page-about .about-stats {
    padding: 104px 0;
  }

  .page-about .about-timeline {
    padding: 104px 0 116px;
  }

  .page-about .about-timeline__intro {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
    align-items: end;
  }

  .page-about .about-timeline__figure {
    margin: 0 0 0 auto;
    max-width: 420px;
  }

  .page-about .about-timeline__track {
    padding-left: 10px;
  }

  .page-about .about-mechanism {
    padding: 104px 0;
  }

  .page-about .about-team {
    padding: 104px 0;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
  }

  .page-about .about-awards {
    padding: 104px 0;
  }
}

/* ---------- 响应式（≥1024px） ---------- */
@media (min-width: 1024px) {
  .page-about .about-stats__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .about-mechanism__grid {
    gap: 24px;
  }

  .page-about .about-awards__grid {
    gap: 24px;
  }
}