.page-about {
  --about-shadow: 0 22px 60px -34px rgba(3, 15, 26, .55);
  --about-hair: 1px solid rgba(78, 113, 134, .3);
  --about-hair-cyan: 1px solid rgba(43, 240, 208, .28);
  background: var(--abyss-950);
  color: var(--mist-100);
}

/* ============ 顶部声明 ============ */
.page-about .about-intro {
  padding: clamp(18px, 4vw, 32px) 0 clamp(40px, 6vw, 72px);
  background:
    radial-gradient(760px 360px at 82% -8%, rgba(43, 240, 208, .16), transparent 62%),
    radial-gradient(560px 300px at 8% 12%, rgba(255, 90, 44, .1), transparent 60%),
    var(--abyss-950);
}

.page-about .about-intro__head {
  margin-top: clamp(20px, 4vw, 40px);
}

.page-about .about-intro__head h1 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1.08;
  margin: 18px 0 20px;
  max-width: 20ch;
}

.page-about .about-intro__head .page-head__lead {
  max-width: 62ch;
  color: var(--text-soft);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
}

.page-about .about-banner {
  margin-top: clamp(28px, 5vw, 56px);
  border-radius: var(--radius-organic);
  overflow: hidden;
  background: var(--abyss-800);
  border: var(--about-hair-cyan);
  box-shadow: var(--about-shadow);
}

.page-about .about-banner .media-frame__img,
.page-about .about-banner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-banner .media-frame__caption {
  padding: 14px 22px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--text-dim);
  background: var(--abyss-800);
}

/* ============ 章节公共头 ============ */
.page-about .about-section-head {
  max-width: 68ch;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-about .about-section-head h2 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.15;
  margin: 14px 0 16px;
}

.page-about .about-section-head__lead {
  color: var(--abyss-600);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.9;
}

.page-about .section--light .about-section-head h2 { color: var(--ink-900); }
.page-about .section--deep .about-section-head h2 { color: var(--mist-100); }
.page-about .section--deep .about-section-head__lead { color: var(--text-soft); }

/* ============ 时间线 ============ */
.page-about .about-era {
  background: var(--paper-050);
  color: var(--ink-900);
}

.page-about .timeline {
  list-style: none;
  padding: 0;
  margin: 0 0 clamp(36px, 6vw, 64px);
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan-400) 0%, var(--cyan-400) 62%, var(--orange-500) 100%);
  opacity: .5;
  border-radius: 2px;
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 clamp(30px, 5vw, 52px) clamp(28px, 4vw, 44px);
  display: block;
}

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

.page-about .timeline__axis {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
}

.page-about .timeline__year {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--abyss-600);
  background: rgba(43, 240, 208, .14);
  padding: 4px 10px;
  border-radius: var(--radius-chip);
  border: 1px solid rgba(43, 240, 208, .35);
}

.page-about .timeline__dot {
  position: absolute;
  left: 4px;
  top: 12px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 0 4px var(--paper-050), 0 0 0 6px rgba(43, 240, 208, .28);
}

.page-about .timeline__dot--orange {
  background: var(--orange-500);
  box-shadow: 0 0 0 4px var(--paper-050), 0 0 0 6px rgba(255, 90, 44, .3);
}

.page-about .timeline__body {
  background: #ffffff;
  border-radius: var(--radius-organic);
  border: var(--about-hair);
  padding: clamp(18px, 3vw, 28px);
  box-shadow: 0 14px 34px -26px rgba(3, 15, 26, .4);
  transition: transform var(--dur-hover) ease, box-shadow var(--dur-hover) ease, border-color var(--dur-hover) ease;
}

.page-about .timeline__body:hover {
  transform: translateY(-2px);
  border-color: rgba(43, 240, 208, .55);
  box-shadow: 0 22px 46px -28px rgba(3, 15, 26, .45);
}

.page-about .timeline__body h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.2vw, 22px);
  color: var(--ink-900);
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

.page-about .timeline__body p {
  margin: 0 0 14px;
  color: #2b3a45;
  line-height: 1.85;
  font-size: 15px;
}

.page-about .timeline__stats {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .timeline__stat {
  font-size: 13px;
  color: var(--abyss-600);
  background: rgba(14, 51, 80, .07);
  border: 1px solid rgba(14, 51, 80, .16);
  padding: 5px 12px;
  border-radius: var(--radius-chip);
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.page-about .timeline__stat-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  color: var(--abyss-800);
}

.page-about .about-timeline-figure {
  border-radius: var(--radius-organic);
  overflow: hidden;
  background: var(--abyss-800);
  border: var(--about-hair);
}

.page-about .about-timeline-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-timeline-figure .media-frame__caption {
  padding: 14px 22px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  background: var(--abyss-800);
}

/* ============ 栏目体系 ============ */
.page-about .about-channels {
  background:
    radial-gradient(620px 320px at 92% 6%, rgba(43, 240, 208, .12), transparent 60%),
    var(--abyss-950);
}

.page-about .channels-split {
  display: grid;
  gap: clamp(28px, 5vw, 54px);
  align-items: start;
}

.page-about .channels-split__text h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.15;
  margin: 14px 0 18px;
  letter-spacing: -0.02em;
}

.page-about .channels-split__text .prose {
  color: var(--text-soft);
  line-height: 1.9;
  max-width: 60ch;
  margin: 0 0 16px;
  font-size: 15px;
}

.page-about .channels-split__text a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 240, 208, .45);
  transition: color var(--dur-hover) ease, border-color var(--dur-hover) ease;
}
.page-about .channels-split__text a:hover { color: var(--cyan-200); border-color: var(--cyan-200); }

.page-about .channels-list {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  border-top: var(--about-hair-cyan);
}

.page-about .channels-list li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 0;
  border-bottom: var(--about-hair-cyan);
  color: var(--mist-100);
  font-size: 14px;
  transition: transform var(--dur-hover) ease;
}

.page-about .channels-list li:hover { transform: translateX(6px); }

.page-about .channels-list__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan-400);
  flex: 0 0 auto;
  letter-spacing: .06em;
}

.page-about .channels-split__chart {
  background: var(--abyss-800);
  border: var(--about-hair-cyan);
  border-radius: var(--radius-organic);
  padding: clamp(16px, 3vw, 26px);
  margin: 0;
  box-shadow: var(--about-shadow);
}

.page-about .channels-split__chart svg {
  width: 100%;
  height: auto;
  display: block;
}

.page-about .channels-split__chart-title {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan-400);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.page-about .channels-split__chart-note {
  margin: 14px 0 0;
  font-size: 12px;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

/* ============ 双版本 ============ */
.page-about .about-versions {
  background: var(--paper-050);
  color: var(--ink-900);
}

.page-about .versions-split {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
  align-items: center;
}

.page-about .versions-stack {
  position: relative;
  height: clamp(200px, 32vw, 280px);
  border-radius: var(--radius-organic);
  background: linear-gradient(140deg, var(--abyss-800), var(--abyss-600));
  overflow: hidden;
  box-shadow: var(--about-shadow);
}

.page-about .versions-stack__layer {
  position: absolute;
  inset: 22% 12% 22% 12%;
  border-radius: 20px 8px 20px 8px;
  transform: rotate(-6deg);
}

.page-about .versions-stack__layer--a {
  background: rgba(43, 240, 208, .26);
  border: 1px solid rgba(43, 240, 208, .65);
  transform: rotate(-6deg) translate(-14px, -8px);
}

.page-about .versions-stack__layer--b {
  background: rgba(255, 154, 107, .22);
  border: 1px solid rgba(255, 90, 44, .7);
  transform: rotate(-6deg) translate(24px, 22px);
}

.page-about .versions-stack__legend {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  padding: 5px 12px;
  border-radius: var(--radius-chip);
  background: var(--abyss-950);
}

.page-about .versions-stack__legend--a {
  left: 18px;
  top: 18px;
  color: var(--cyan-400);
  border: 1px solid rgba(43, 240, 208, .5);
}

.page-about .versions-stack__legend--b {
  right: 18px;
  bottom: 18px;
  color: var(--orange-300);
  border: 1px solid rgba(255, 90, 44, .5);
}

.page-about .versions-copy h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.4vw, 24px);
  color: var(--ink-900);
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}

.page-about .versions-copy .prose {
  color: #2b3a45;
  line-height: 1.9;
  margin: 0 0 16px;
  font-size: 15px;
  max-width: 60ch;
}

.page-about .versions-note {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  display: grid;
  gap: 10px;
}

.page-about .versions-note li {
  font-size: 14px;
  color: var(--ink-900);
  display: flex;
  align-items: baseline;
  gap: 12px;
  border-bottom: 1px dashed rgba(14, 51, 80, .22);
  padding-bottom: 8px;
}

.page-about .versions-note__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 22px;
  color: var(--orange-500);
  min-width: 40px;
  text-align: right;
}

/* ============ 团队 ============ */
.page-about .about-team {
  background:
    radial-gradient(600px 300px at 12% 20%, rgba(43, 240, 208, .1), transparent 60%),
    var(--abyss-950);
}

.page-about .team-split {
  display: grid;
  gap: clamp(28px, 5vw, 54px);
  align-items: start;
}

.page-about .team-split__text h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 14px 0 18px;
}

.page-about .team-split__text .prose {
  color: var(--text-soft);
  line-height: 1.9;
  font-size: 15px;
  max-width: 60ch;
  margin: 0 0 16px;
}

.page-about .team-split__text a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 240, 208, .45);
}

.page-about .team-split__text a:hover { color: var(--cyan-200); }

.page-about .team-facts {
  margin: 24px 0 0;
  padding: 0;
  border-top: var(--about-hair-cyan);
}

.page-about .team-facts__row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: var(--about-hair-cyan);
  font-size: 14px;
}

.page-about .team-facts dt {
  color: var(--text-dim);
  font-family: var(--font-mono);
  letter-spacing: .04em;
  flex: 0 0 auto;
}

.page-about .team-facts dd {
  margin: 0;
  color: var(--mist-100);
  text-align: right;
}

.page-about .team-split__figure {
  margin: 0;
  border-radius: var(--radius-organic);
  overflow: hidden;
  border: var(--about-hair-cyan);
  background: var(--abyss-800);
  box-shadow: var(--about-shadow);
}

.page-about .team-split__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .team-split__figure .media-frame__caption {
  padding: 14px 22px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  background: var(--abyss-800);
}

/* ============ 海南覆盖 ============ */
.page-about .about-island {
  background: var(--paper-050);
  color: var(--ink-900);
}

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

.page-about .island-grid__item {
  background: #ffffff;
  border-radius: var(--radius-soft);
  border: var(--about-hair);
  padding: 16px 20px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  transition: transform var(--dur-hover) ease, border-color var(--dur-hover) ease, box-shadow var(--dur-hover) ease;
}

.page-about .island-grid__item:hover {
  transform: translateX(6px);
  border-color: rgba(43, 240, 208, .55);
  box-shadow: 0 16px 34px -28px rgba(3, 15, 26, .5);
}

.page-about .island-grid__item--key {
  border-left: 4px solid var(--orange-500);
}

.page-about .island-grid__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  color: var(--ink-900);
  letter-spacing: -0.01em;
}

.page-about .island-grid__bar {
  display: block;
  height: 6px;
  border-radius: 999px;
  background: rgba(14, 51, 80, .12);
  overflow: hidden;
}

.page-about .island-grid__bar-fill {
  display: block;
  height: 100%;
  width: var(--fill, 60%);
  background: linear-gradient(90deg, var(--cyan-400), var(--cyan-200));
  border-radius: 999px;
}

.page-about .island-grid__item--key .island-grid__bar-fill {
  background: linear-gradient(90deg, var(--orange-500), var(--orange-300));
}

.page-about .island-grid__note {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--abyss-600);
  letter-spacing: .02em;
}

.page-about .about-island__note {
  margin: 26px 0 0;
  font-size: 14px;
  color: var(--abyss-600);
  max-width: 62ch;
  line-height: 1.85;
}

/* ============ CTA ============ */
.page-about .about-cta {
  background:
    radial-gradient(560px 320px at 88% 50%, rgba(255, 90, 44, .14), transparent 60%),
    var(--abyss-950);
  border-top: var(--about-hair-cyan);
}

.page-about .about-cta__inner {
  display: grid;
  gap: clamp(22px, 4vw, 42px);
  align-items: center;
}

.page-about .about-cta__text h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 14px 0 16px;
}

.page-about .about-cta__text .prose {
  color: var(--text-soft);
  line-height: 1.9;
  font-size: 15px;
  max-width: 60ch;
  margin: 0;
}

.page-about .about-cta__text a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 240, 208, .45);
}
.page-about .about-cta__text a:hover { color: var(--cyan-200); }

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

/* ============ 响应式 ============ */
@media (min-width: 720px) {
  .page-about .timeline__item {
    display: grid;
    grid-template-columns: minmax(120px, 160px) 1fr;
    gap: clamp(18px, 3vw, 36px);
    padding-left: 0;
  }

  .page-about .timeline::before { left: 170px; }

  .page-about .timeline__axis {
    flex-direction: column;
    align-items: flex-end;
    text-align: right;
    margin-bottom: 0;
    padding-top: 12px;
    position: relative;
  }

  .page-about .timeline__dot {
    left: auto;
    right: -46px;
    top: 22px;
  }

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

@media (min-width: 1000px) {
  .page-about .timeline__item {
    grid-template-columns: minmax(160px, 220px) 1fr;
  }

  .page-about .timeline::before { left: 228px; }

  .page-about .timeline__dot { right: -44px; }

  .page-about .channels-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .95fr);
  }

  .page-about .versions-split {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  }

  .page-about .team-split {
    grid-template-columns: minmax(0, 1.3fr) minmax(280px, .9fr);
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) auto;
  }

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

@media (max-width: 480px) {
  .page-about .timeline__stat { font-size: 12px; padding: 4px 10px; }
  .page-about .versions-stack { height: 180px; }
  .page-about .versions-stack__legend { font-size: 10px; padding: 4px 9px; }
}
<<<END>>>

.page-about {
  --fill: currentColor;
}