.page-about {
  --about-line: rgba(46, 211, 224, 0.28);
  --about-hair: rgba(124, 143, 163, 0.26);
  --about-panel: rgba(15, 37, 64, 0.72);
  --about-panel-2: rgba(27, 58, 92, 0.55);

  background: var(--ink-900);
  color: var(--mist-50);
  overflow-x: hidden;
}

.page-about .about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-about .about-h2 {
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.02em;
  margin: 12px 0 16px;
  color: var(--mist-50);
}

.page-about .about-h2--light {
  color: var(--ink-900);
}

.page-about .about-lead {
  font-size: 16px;
  line-height: 1.85;
  color: var(--slate-400);
  margin: 0 0 14px;
}

.page-about .about-lead--light {
  color: var(--slate-700);
}

.page-about .about-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: 34px;
}

.page-about .about-head--center {
  text-align: left;
}

.page-about .about-head--center .about-lead {
  max-width: 62ch;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: 118px 0 60px;
  background:
    radial-gradient(circle at 84% 4%, rgba(46, 211, 224, 0.16), transparent 46%),
    radial-gradient(circle at 4% 96%, rgba(232, 163, 61, 0.13), transparent 44%),
    var(--ink-900);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(46, 211, 224, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 211, 224, 0.055) 1px, transparent 1px);
  background-size: 68px 68px;
  pointer-events: none;
}

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

.page-about .about-hero__grid {
  margin-top: 22px;
}

.page-about .about-hero__title {
  font-size: clamp(32px, 6vw, 56px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: #ffffff;
  margin: 14px 0 22px;
}

.page-about .about-hero__lead {
  font-size: 17px;
  line-height: 1.85;
  color: #C6D3E1;
  margin: 0 0 26px;
  max-width: 60ch;
}

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

.page-about .about-facts {
  display: grid;
  gap: 12px;
}

.page-about .about-fact {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--about-panel);
  border: 1px solid rgba(46, 211, 224, 0.18);
}

.page-about .about-fact__num {
  font-size: 26px;
  font-weight: 600;
  color: var(--amber-500);
  line-height: 1;
  min-width: 96px;
}

.page-about .about-fact__num em {
  font-style: normal;
  font-size: 16px;
}

.page-about .about-fact__label {
  font-size: 14px;
  color: var(--slate-400);
  letter-spacing: 0.02em;
}

.page-about .about-facts__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--slate-400);
  border-left: 2px solid var(--about-line);
  padding-left: 12px;
}

/* ---------- 理念陈述 ---------- */

.page-about .about-creed {
  position: relative;
  padding: 78px 0;
  background: var(--ink-900);
  border-top: 1px solid var(--about-hair);
}

.page-about .creed-mark {
  display: none;
}

.page-about .creed-title {
  font-size: clamp(22px, 3.6vw, 38px);
  font-weight: 800;
  line-height: 1.42;
  letter-spacing: -0.01em;
  color: var(--mist-50);
  margin: 12px 0 40px;
  max-width: 26ch;
}

.page-about .creed-list {
  list-style: none;
  margin: 0 0 40px;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .creed-item {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
  padding: 26px 0;
  border-bottom: 1px solid var(--about-hair);
}

.page-about .creed-item__no {
  font-size: 15px;
  font-weight: 600;
  color: var(--cyan-400);
  padding-top: 3px;
}

.page-about .creed-item__body h3 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--mist-50);
  margin: 0 0 10px;
}

.page-about .creed-item__body p {
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--slate-400);
  margin: 0;
}

.page-about .creed-close {
  font-size: 16px;
  line-height: 1.9;
  color: #C6D3E1;
  margin: 0;
  max-width: 62ch;
  padding-left: 18px;
  border-left: 3px solid var(--amber-500);
}

/* ---------- 发展历程 ---------- */

.page-about .about-history {
  padding: 78px 0;
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--ink-700) 100%);
}

.page-about .about-history__fig {
  margin: 0 0 42px;
}

.page-about .about-history__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(46, 211, 224, 0.2);
  object-fit: cover;
}

.page-about .about-history__fig figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate-400);
  letter-spacing: 0.02em;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 4px 0 0 24px;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 34px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan-400) 0%, var(--amber-500) 62%, rgba(46, 211, 224, 0.08) 100%);
}

.page-about .about-node {
  position: relative;
  padding: 0 0 36px 26px;
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ink-700);
  border: 2px solid var(--cyan-400);
  box-shadow: 0 0 0 5px rgba(46, 211, 224, 0.12);
}

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

.page-about .about-node__year {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--ink-900);
  background: var(--cyan-200);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  margin-bottom: 12px;
}

.page-about .about-node__title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--mist-50);
  margin: 0 0 8px;
}

.page-about .about-node__text {
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--slate-400);
  margin: 0;
  max-width: 58ch;
}

/* ---------- 团队 ---------- */

.page-about .about-team {
  padding: 78px 0;
  background: var(--mist-50);
  color: var(--slate-700);
}

.page-about .about-team__fig {
  margin: 26px 0 0;
}

.page-about .about-team__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  object-fit: cover;
}

.page-about .about-roles {
  list-style: none;
  margin: 0 0 32px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-role {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  align-items: start;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: #ffffff;
  box-shadow: var(--shadow-card);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}

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

.page-about .about-role__num {
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  color: var(--ink-900);
  padding-top: 2px;
}

.page-about .about-role__body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-900);
  margin: 0 0 8px;
}

.page-about .about-role__body p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate-700);
  margin: 0 0 14px;
}

.page-about .about-role__bar {
  display: block;
  height: 6px;
  border-radius: var(--radius-pill);
  background: rgba(27, 58, 92, 0.1);
  overflow: hidden;
}

.page-about .about-role__fill {
  display: block;
  height: 100%;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--cyan-400), var(--ink-500));
}

.page-about .about-role:nth-child(1) .about-role__fill { width: 39.7%; }
.page-about .about-role:nth-child(2) .about-role__fill { width: 20.6%; }
.page-about .about-role:nth-child(3) .about-role__fill { width: 27.9%; }
.page-about .about-role:nth-child(4) .about-role__fill { width: 11.8%; }

.page-about .about-flow {
  padding: 22px 20px;
  border-radius: var(--radius-lg);
  background: var(--ink-900);
  color: var(--mist-50);
}

.page-about .about-flow__title {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--mist-50);
}

.page-about .about-flow__list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .about-flow__list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #C6D3E1;
  background: rgba(46, 211, 224, 0.08);
  border: 1px solid rgba(46, 211, 224, 0.16);
  border-radius: var(--radius-pill);
  padding: 7px 12px;
}

.page-about .about-flow__list li span {
  font-size: 12px;
  font-weight: 600;
  color: var(--amber-500);
}

.page-about .about-flow__note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--slate-400);
}

/* ---------- 资质 ---------- */

.page-about .about-certs-sec {
  padding: 78px 0;
  background: var(--ink-900);
  border-top: 1px solid var(--about-hair);
}

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

.page-about .about-cert {
  padding: 26px 22px;
  border-radius: var(--radius-lg);
  background: var(--about-panel-2);
  border: 1px solid var(--about-hair);
}

.page-about .about-cert__seal {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 86px;
  height: 86px;
  border-radius: 50%;
  border: 1px solid var(--amber-500);
  box-shadow: inset 0 0 0 5px rgba(232, 163, 61, 0.12);
  margin-bottom: 18px;
}

.page-about .about-cert__seal-top {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--amber-200);
}

.page-about .about-cert__seal-num {
  font-size: 19px;
  font-weight: 600;
  color: var(--amber-500);
  line-height: 1.2;
}

.page-about .about-cert h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--mist-50);
  margin: 0 0 10px;
}

.page-about .about-cert p {
  font-size: 15px;
  line-height: 1.88;
  color: var(--slate-400);
  margin: 0;
}

/* ---------- 覆盖与续约 ---------- */

.page-about .about-coverage {
  padding: 78px 0;
  background: linear-gradient(180deg, var(--ink-700) 0%, var(--ink-900) 100%);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 26px;
}

.page-about .about-stat {
  position: relative;
  padding: 20px 22px;
  border-radius: var(--radius-lg);
  background: var(--about-panel);
  border: 1px solid rgba(46, 211, 224, 0.18);
  cursor: default;
}

.page-about .about-stat--gold {
  border-color: rgba(232, 163, 61, 0.36);
  background: rgba(232, 163, 61, 0.08);
}

.page-about .about-stat__num {
  display: block;
  font-size: 40px;
  font-weight: 600;
  line-height: 1;
  color: var(--cyan-400);
}

.page-about .about-stat--gold .about-stat__num {
  color: var(--amber-500);
}

.page-about .about-stat__num em {
  font-style: normal;
  font-size: 22px;
}

.page-about .about-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  color: var(--slate-400);
  letter-spacing: 0.02em;
}

.page-about .about-stat__tip {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: calc(100% + 8px);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  background: var(--mist-50);
  color: var(--ink-900);
  font-size: 12.5px;
  line-height: 1.6;
  opacity: 0;
  transform: translateY(6px);
  pointer-events: none;
  transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
  box-shadow: var(--shadow-card);
}

.page-about .about-stat:hover .about-stat__tip,
.page-about .about-stat:focus-visible .about-stat__tip {
  opacity: 1;
  transform: translateY(0);
}

.page-about .about-support {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-support li {
  font-size: 14.5px;
  line-height: 1.8;
  color: #C6D3E1;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-support li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-support .tag {
  margin-right: 8px;
}

/* ---------- 合作与参访 ---------- */

.page-about .about-visit {
  padding: 78px 0;
  background: var(--mist-50);
  color: var(--slate-700);
}

.page-about .about-visit__text {
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--slate-700);
  margin: 0 0 16px;
}

.page-about .about-visit__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-visit__fig {
  margin: 4px 0 0;
}

.page-about .about-visit__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  object-fit: cover;
}

.page-about .about-visit__fig figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate-400);
}

/* ---------- 行动区 ---------- */

.page-about .about-cta {
  padding: 64px 0 78px;
  background:
    radial-gradient(circle at 88% 12%, rgba(46, 211, 224, 0.18), transparent 48%),
    var(--ink-900);
}

.page-about .about-cta__title {
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--mist-50);
  margin: 0 0 14px;
}

.page-about .about-cta__text {
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--slate-400);
  margin: 0;
  max-width: 62ch;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-start;
  align-content: flex-start;
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-about .about-certs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .about-stat--gold {
    grid-column: span 2;
  }

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

@media (min-width: 900px) {
  .page-about .about-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 40px;
  }

  .page-about .about-grid > .about-span-4 { grid-column: span 4; }
  .page-about .about-grid > .about-span-5 { grid-column: span 5; }
  .page-about .about-grid > .about-span-8 { grid-column: span 8; }
  .page-about .about-grid > .about-span-7 { grid-column: span 7; }

  .page-about .about-head {
    grid-template-columns: 110px 1fr;
    gap: 32px;
    align-items: start;
    margin-bottom: 44px;
  }

  .page-about .about-head--center {
    grid-template-columns: 1fr;
  }

  .page-about .about-head--center .about-head__body {
    max-width: 78ch;
  }

  .page-about .about-hero {
    padding: 148px 0 76px;
  }

  .page-about .about-hero__grid {
    margin-top: 34px;
    gap: 56px;
  }

  .page-about .about-creed {
    padding: 110px 0 118px;
  }

  .page-about .creed-mark {
    display: block;
    position: absolute;
    top: 110px;
    right: 34px;
    writing-mode: vertical-rl;
    font-size: 12px;
    letter-spacing: 0.34em;
    color: var(--slate-400);
    opacity: 0.7;
  }

  .page-about .creed-title {
    margin-bottom: 52px;
  }

  .page-about .about-history,
  .page-about .about-team,
  .page-about .about-certs-sec,
  .page-about .about-coverage,
  .page-about .about-visit {
    padding: 104px 0;
  }

  .page-about .about-timeline {
    padding-left: 40px;
    max-width: 940px;
  }

  .page-about .about-node {
    padding: 0 0 48px 34px;
  }

  .page-about .about-node:nth-child(2) { margin-left: 22px; }
  .page-about .about-node:nth-child(3) { margin-left: 44px; }
  .page-about .about-node:nth-child(4) { margin-left: 66px; }

  .page-about .about-node__title {
    font-size: 22px;
  }

  .page-about .about-roles {
    gap: 16px;
  }

  .page-about .about-role {
    padding: 24px 26px;
  }

  .page-about .about-certs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

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

  .page-about .about-stat--gold {
    grid-column: span 1;
  }

  .page-about .about-stat__num {
    font-size: 46px;
  }

  .page-about .about-visit__grid {
    gap: 52px;
    align-items: start;
  }

  .page-about .about-cta {
    padding: 88px 0 104px;
  }

  .page-about .about-cta__grid {
    align-items: center;
    gap: 48px;
  }

  .page-about .about-cta__actions {
    flex-direction: column;
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero__grid {
    gap: 72px;
  }

  .page-about .about-fact {
    padding: 18px 22px;
  }

  .page-about .about-fact__num {
    font-size: 30px;
    min-width: 104px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-stat__tip {
    transition: none;
  }
}
<<<END>>>