.page-about {
  --about-indent: 34px;
  display: block;
  position: relative;
  overflow-x: clip;
  background:
    radial-gradient(115% 55% at 10% 0%, rgba(139, 92, 246, 0.18), transparent 62%),
    radial-gradient(95% 45% at 92% 8%, rgba(34, 211, 238, 0.12), transparent 64%);
}

/* ---------- 面包屑 ---------- */
.page-about .crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 22px var(--pad) 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .crumb a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.16s ease;
}

.page-about .crumb a:hover,
.page-about .crumb a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(26px, 4.5vw, 56px) var(--pad) clamp(32px, 5vw, 64px);
}

.page-about .about-hero__kicker {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(31px, 6.2vw, 62px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .about-hero h1::after {
  content: "";
  display: block;
  width: 108px;
  height: 6px;
  margin-top: 22px;
  background: linear-gradient(90deg, var(--neon), var(--cyan), var(--amber));
}

.page-about .about-hero__text {
  margin: 24px 0 0;
  max-width: 64ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-about .hero-facts {
  margin-top: 36px;
  border: 2px solid var(--line);
  background: linear-gradient(155deg, rgba(139, 92, 246, 0.18), rgba(10, 18, 48, 0.94) 58%);
  box-shadow: var(--shadow-hard);
}

.page-about .hero-fact {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px 16px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .hero-fact:last-child {
  border-bottom: 0;
}

.page-about .hero-fact__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-about .hero-fact__v {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--amber);
  text-align: right;
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: 56px;
    align-items: start;
  }

  .page-about .hero-facts {
    margin-top: 8px;
  }
}

/* ---------- 潮涌分隔 ---------- */
.page-about .wave-sep {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.page-about .wave-sep--flip {
  opacity: 0.75;
}

.page-about .wave-divider {
  display: block;
  width: 100%;
  height: clamp(38px, 5vw, 58px);
  color: var(--neon);
  opacity: 0.5;
}

/* ---------- 通用面板内文字 ---------- */
.page-about .about-block {
  padding: clamp(20px, 3vw, 30px);
}

.page-about .about-block__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.3;
  color: var(--ink);
}

.page-about .about-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.page-about .about-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 12px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-about .about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8em;
  width: 14px;
  height: 2px;
  background: var(--cyan);
}

.page-about .panel--neon .about-list li::before {
  background: var(--neon);
}

.page-about .panel--amber .about-list li::before {
  background: var(--amber);
}

.page-about .rhythm-tag {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  border: 2px solid currentColor;
  background: rgba(255, 255, 255, 0.04);
}

/* ---------- 时间线 ---------- */
.page-about .tl-wrap {
  position: relative;
  margin-top: 30px;
  padding: clamp(20px, 3.4vw, 40px) clamp(18px, 3vw, 40px);
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-about .tl-bg {
  position: absolute;
  inset: 0;
  margin: 0;
  z-index: 0;
  pointer-events: none;
}

.page-about .tl-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.24;
}

.page-about .tl-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 18, 48, 0.5), rgba(10, 18, 48, 0.94));
}

.page-about .tl-wrap > *:not(.tl-bg) {
  position: relative;
  z-index: 1;
}

.page-about .timeline {
  position: relative;
  list-style: none;
  margin: 28px 0 0;
  padding: 0 0 0 var(--about-indent);
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 4px;
  background: linear-gradient(180deg, var(--neon), var(--cyan));
  opacity: 0.9;
}

.page-about .tl-item {
  position: relative;
  padding-bottom: 30px;
}

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

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--about-indent));
  top: 5px;
  width: 12px;
  height: 12px;
  background: var(--space);
  border: 2px solid var(--neon);
}

.page-about .tl-item:hover::before {
  background: var(--neon);
}

.page-about .tl-year {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .tl-item__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.35;
  color: var(--ink);
}

.page-about .tl-item__text {
  margin: 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 团队 ---------- */
.page-about .team-media {
  max-width: 960px;
  margin: 30px 0 0;
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: 28px;
}

.page-about .team-card {
  padding: 24px;
  border: 2px solid var(--line);
  background: linear-gradient(160deg, rgba(18, 28, 70, 0.95), rgba(10, 18, 48, 0.95));
  box-shadow: var(--shadow-soft);
  transition: border-color 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  border-color: var(--neon);
  box-shadow: 10px 10px 0 rgba(5, 10, 30, 0.85), 0 0 0 2px rgba(139, 92, 246, 0.42);
  transform: translateY(-2px);
}

.page-about .team-card__idx {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-about .team-card__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
  color: var(--ink);
}

.page-about .team-card__desc {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .team-card__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .team-card__list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .team-card__list li:last-child {
  margin-bottom: 0;
}

.page-about .team-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 2px;
  background: var(--cyan);
}

@media (min-width: 780px) {
  .page-about .team-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-about .team-card:nth-child(1) {
    grid-column: span 5;
  }

  .page-about .team-card:nth-child(2) {
    grid-column: span 7;
  }

  .page-about .team-card:nth-child(3) {
    grid-column: span 7;
  }

  .page-about .team-card:nth-child(4) {
    grid-column: span 5;
  }
}

/* ---------- 数据面板 ---------- */
.page-about .stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.page-about .stat {
  padding: 22px 18px;
  border: 2px solid var(--line);
  background: var(--void);
  box-shadow: var(--shadow-soft);
}

.page-about .stat__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 4.2vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--amber);
}

.page-about .stat__label {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  line-height: 1.6;
  color: var(--muted);
}

@media (min-width: 760px) {
  .page-about .stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 双版本 ---------- */
.page-about .dual {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin-top: 30px;
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
}

.page-about .dual__col {
  padding: clamp(20px, 3vw, 30px);
  border-left: 6px solid var(--neon);
}

.page-about .dual__col--cyan {
  border-left-color: var(--cyan);
  border-top: 2px solid var(--line-soft);
}

.page-about .dual__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.2vw, 24px);
  color: var(--ink);
}

.page-about .dual__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.page-about .dual__list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 11px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

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

.page-about .dual__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 12px;
  height: 2px;
  background: var(--neon);
}

.page-about .dual__col--cyan .dual__list li::before {
  background: var(--cyan);
}

.page-about .dual__note {
  margin: 20px 0 0;
  padding: 14px 18px;
  border: 2px dashed var(--line);
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

@media (min-width: 820px) {
  .page-about .dual {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .dual__col--cyan {
    border-top: 0;
  }
}

/* ---------- 地域与备案 ---------- */
.page-about .region {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  margin-top: 30px;
}

.page-about .region__media {
  margin: 0;
}

.page-about .region__text {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .reg-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  margin-top: 22px;
  padding: 16px 18px;
  border: 2px dashed var(--line);
  background: rgba(139, 92, 246, 0.09);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-about .reg-line__k {
  color: var(--muted);
}

.page-about .reg-line__v {
  color: var(--amber);
  font-weight: 700;
}

@media (min-width: 860px) {
  .page-about .region {
    grid-template-columns: 5fr 7fr;
    align-items: center;
    gap: 44px;
  }
}

/* ---------- 结尾行动 ---------- */
.page-about .about-cta {
  padding: clamp(24px, 3.4vw, 40px);
}

.page-about .about-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 34px);
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-cta__text {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

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

@media (max-width: 480px) {
  .page-about .about-hero__actions .btn,
  .page-about .about-cta__actions .btn {
    width: 100%;
    text-align: center;
  }

  .page-about .hero-fact {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-about .hero-fact__v {
    text-align: left;
  }
}
<<<END>>>