.page-about {
  --about-edge: rgba(242, 234, 217, 0.16);
  --about-edge-strong: rgba(55, 228, 211, 0.42);
  --about-muted: rgba(242, 234, 217, 0.7);
  --about-rail: 64px;
  background: var(--abyss);
  color: var(--paper);
  padding-bottom: 32px;
  overflow-x: hidden;
}

/* ---------- Hero ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 30px 0 74px;
  background:
    radial-gradient(120% 90% at 84% -10%, rgba(30, 143, 181, 0.42) 0%, rgba(4, 28, 44, 0) 62%),
    linear-gradient(158deg, var(--deep) 0%, var(--abyss) 68%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -14%;
  width: 62%;
  height: 170%;
  background: repeating-linear-gradient(
    102deg,
    rgba(55, 228, 211, 0.08) 0 2px,
    transparent 2px 28px
  );
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -6%;
  bottom: 0;
  width: 112%;
  height: 26px;
  background: var(--deep);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  pointer-events: none;
}

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

.page-about .about-hero .crumbs {
  margin: 0 0 26px;
  font-size: 13px;
}

.page-about .about-hero .eyebrow {
  margin-bottom: 12px;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(38px, 8.6vw, 100px);
  line-height: 0.98;
  letter-spacing: 0.005em;
  margin: 0 0 22px;
  max-width: 16ch;
  color: var(--paper);
}

.page-about .about-hero__lede {
  max-width: 58ch;
  margin: 0 0 34px;
  font-size: 16px;
  line-height: 1.82;
  color: rgba(242, 234, 217, 0.86);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 0;
  padding: 1px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  max-width: 780px;
  background: rgba(242, 234, 217, 0.2);
  border: 1px solid rgba(242, 234, 217, 0.2);
}

.page-about .about-hero__facts li {
  background: #062234;
  padding: 16px 18px;
}

.page-about .fact-num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 4.4vw, 36px);
  font-weight: 600;
  line-height: 1;
  color: var(--cyan);
  margin-bottom: 8px;
}

.page-about .fact-label {
  display: block;
  font-size: 13px;
  line-height: 1.62;
  color: rgba(242, 234, 217, 0.72);
}

@media (min-width: 640px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- Section shell ---------- */

.page-about .about-sec {
  position: relative;
  padding: 56px 0;
}

.page-about .is-abyss {
  background: var(--abyss);
}

.page-about .is-deep {
  background: linear-gradient(180deg, var(--deep) 0%, #0a2c45 100%);
}

.page-about .is-paper {
  --accent-deep: #0d6b88;
  --ink-soft: #3d5061;
  --rule-soft: rgba(16, 32, 43, 0.18);
  --about-muted: #3d5061;
  --about-edge: rgba(16, 32, 43, 0.16);
  --about-edge-strong: rgba(16, 32, 43, 0.3);
  background: var(--paper);
  color: var(--paper-ink);
}

.page-about .is-paper .eyebrow {
  color: #56697a;
}

.page-about .is-paper .section-title {
  color: var(--paper-ink);
}

.page-about .is-paper .about-node {
  border-color: var(--deep);
  color: var(--deep);
}

.page-about .is-paper .about-lede {
  color: #3d5061;
}

.page-about .is-paper .prose p {
  color: #3d5061;
}

.page-about .about-row {
  display: grid;
  gap: 18px;
}

@media (min-width: 880px) {
  .page-about .about-row {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 40px;
  }
}

.page-about .about-row__rail {
  display: flex;
  align-items: flex-start;
}

.page-about .about-node {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 2px solid var(--amber);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--amber);
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about [data-chapter].is-active .about-node {
  background: var(--amber);
  color: var(--abyss);
  border-color: var(--amber);
}

.page-about .is-paper [data-chapter].is-active .about-node {
  background: var(--deep);
  color: var(--paper);
  border-color: var(--deep);
}

.page-about .about-row__main > .eyebrow {
  margin: 0 0 10px;
}

.page-about .about-row__main > .section-title {
  margin: 0 0 18px;
}

.page-about .about-lede {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.85;
  color: rgba(242, 234, 217, 0.9);
  max-width: 54ch;
  margin: 0 0 20px;
}

.page-about .prose p {
  color: rgba(242, 234, 217, 0.82);
  margin: 0 0 16px;
  max-width: 68ch;
}

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

/* ---------- 团队构成 ---------- */

.page-about .about-team {
  display: grid;
  gap: 26px;
  margin-top: 6px;
}

@media (min-width: 980px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }
}

.page-about .about-team__stack {
  display: block;
}

.page-about .team-item {
  position: relative;
  border: 2px solid var(--about-edge-strong);
  background: rgba(4, 28, 44, 0.55);
  padding: 18px 20px;
}

.page-about .team-item + .team-item {
  margin-top: -2px;
}

.page-about .team-item:nth-child(even) {
  background: rgba(11, 51, 80, 0.66);
  border-color: var(--about-edge);
}

.page-about .team-item__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.page-about .team-item__title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin: 0;
  color: var(--paper);
}

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

.page-about .team-item__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.76;
  color: var(--about-muted);
}

.page-about .team-item__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

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

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

/* ---------- 数据生产流程 ---------- */

.page-about .pipeline {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-about .pipeline__step {
  display: grid;
  gap: 8px;
  padding: 18px 0;
  border-top: 1px solid var(--rule-soft);
}

.page-about .pipeline__step:last-child {
  border-bottom: 1px solid var(--rule-soft);
}

@media (min-width: 760px) {
  .page-about .pipeline__step {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 26px;
    align-items: baseline;
    padding: 20px 0;
  }
}

.page-about .pipeline__time {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: var(--accent-deep);
}

.page-about .pipeline__body h3 {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--paper-ink);
}

.page-about .pipeline__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-soft);
  max-width: 62ch;
}

/* ---------- 版本与赛季积累 ---------- */

.page-about .version-band {
  margin: 22px 0 30px;
  border: 2px solid var(--about-edge-strong);
  height: 128px;
  overflow: hidden;
}

.page-about .version-band img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  opacity: 0.72;
}

.page-about .version-track {
  list-style: none;
  margin: 0;
  padding: 0 0 0 28px;
  position: relative;
}

.page-about .version-track::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(55, 228, 211, 0.12) 100%);
}

.page-about .version-item {
  position: relative;
  padding: 0 0 26px;
}

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

.page-about .version-item__marker {
  position: absolute;
  left: -26px;
  top: 7px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(243, 167, 59, 0.16);
}

.page-about .version-item__title {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--paper);
}

.page-about .version-item__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--about-muted);
  max-width: 64ch;
}

/* ---------- 共建合作 ---------- */

.page-about .partner-strip {
  display: grid;
  gap: 14px;
  margin: 24px 0 20px;
}

@media (min-width: 760px) {
  .page-about .partner-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

.page-about .partner-card {
  border: 2px solid var(--rule-soft);
  background: rgba(255, 255, 255, 0.55);
  padding: 18px 20px;
}

.page-about .partner-card__num {
  display: block;
  font-size: 42px;
  font-weight: 700;
  line-height: 1;
  color: var(--accent-deep);
  margin-bottom: 8px;
}

.page-about .partner-card__label {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper-ink);
}

.page-about .partner-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .about-cta-line {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--about-muted);
  max-width: 62ch;
}

.page-about .about-cta-line a {
  color: var(--cyan);
  text-underline-offset: 3px;
}

.page-about .is-paper .about-cta-line a {
  color: var(--accent-deep);
}

/* ---------- 办公地址与服务时段 ---------- */

.page-about .about-studio {
  display: grid;
  gap: 22px;
  margin-top: 6px;
}

@media (min-width: 980px) {
  .page-about .about-studio {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 34px;
    align-items: start;
  }
}

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

.page-about .about-studio__card {
  border: 2px solid var(--about-edge-strong);
  background: rgba(4, 28, 44, 0.62);
  box-shadow: 8px 8px 0 rgba(30, 143, 181, 0.32);
  padding: 22px 22px 20px;
}

.page-about .studio-list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-about .studio-row {
  display: grid;
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px solid var(--about-edge);
}

.page-about .studio-row:first-child {
  padding-top: 0;
}

.page-about .studio-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .studio-row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-about .studio-row dd {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-about .studio-row .copy-btn {
  flex: 0 0 auto;
  border: 1px solid var(--about-edge-strong);
  background: transparent;
  color: var(--cyan);
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.page-about .studio-row .copy-btn:hover {
  background: rgba(55, 228, 211, 0.12);
}

.page-about .studio-note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--about-edge);
  font-size: 13px;
  line-height: 1.72;
  color: var(--about-muted);
}

.page-about .studio-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

/* ---------- 窄屏微调 ---------- */

@media (max-width: 420px) {
  .page-about .about-sec {
    padding: 44px 0;
  }

  .page-about .about-hero {
    padding: 24px 0 62px;
  }

  .page-about .about-hero h1 {
    font-size: clamp(34px, 11vw, 46px);
  }

  .page-about .team-item {
    padding: 16px 16px;
  }

  .page-about .about-studio__card {
    box-shadow: 5px 5px 0 rgba(30, 143, 181, 0.32);
    padding: 18px 16px 16px;
  }

  .page-about .version-band {
    height: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node,
  .page-about .studio-row .copy-btn {
    transition: none;
  }
}
<<<END>>>

Please proceed.