.page-about {
  --about-rule: rgba(138, 147, 163, 0.28);
  --about-rule-dark: rgba(4, 16, 28, 0.16);
  --about-copy-w: 660px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero__shell {
  padding-top: clamp(112px, 15vw, 176px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(36px, 5vw, 64px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(36px, 6vw, 72px);
  align-items: end;
}

.page-about .about-display {
  margin: 18px 0 0;
  font-size: clamp(42px, 11.4vw, 118px);
  font-weight: 300;
  line-height: 0.96;
  letter-spacing: -0.04em;
  color: var(--paper);
}

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

.page-about .about-display__line--accent {
  color: var(--cyan);
  font-weight: 200;
}

.page-about .about-lead {
  margin-top: clamp(22px, 3vw, 34px);
  max-width: var(--about-copy-w);
  color: rgba(245, 242, 234, 0.8);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(28px, 4vw, 42px);
}

.page-about .about-hero__aside {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-rule);
  border: 2px solid var(--ink-2);
}

.page-about .fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px;
  background: var(--ink-2);
}

.page-about .fact__num {
  font-family: var(--mono);
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 800;
  line-height: 1;
  color: var(--lime);
  letter-spacing: -0.02em;
}

.page-about .fact__num em {
  font-style: normal;
  font-size: 0.62em;
  color: var(--cyan);
}

.page-about .fact__label {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--rock);
}

.page-about .fact__note {
  grid-column: 1 / -1;
  margin: 0;
  padding: 16px;
  background: var(--ink-2);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(245, 242, 234, 0.68);
  border-top: 1px solid var(--about-rule);
}

/* ---------- 通用正文 ---------- */
.page-about .band__inner {
  padding-block: clamp(56px, 8vw, 108px);
}

.page-about .about-h2 {
  margin: 14px 0 0;
  font-size: clamp(28px, 4.6vw, 52px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-h2--wide {
  max-width: 20ch;
}

.page-about .about-h2--dark {
  color: var(--black);
}

.page-about .about-copy {
  margin: 20px 0 0;
  max-width: var(--about-copy-w);
  font-size: 16px;
  line-height: 1.8;
  color: rgba(245, 242, 234, 0.76);
}

.page-about .prose--onlight,
.page-about .about-sand .about-copy,
.page-about .about-sand-2 .about-copy {
  color: rgba(4, 16, 28, 0.78);
}

/* ---------- 时间线 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(36px, 5vw, 72px);
}

.page-about .about-index {
  margin-top: clamp(28px, 4vw, 44px);
  border-top: 2px solid var(--ink-2);
  padding-top: 18px;
}

.page-about .about-index__title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--rock);
}

.page-about .about-index ol {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
}

.page-about .about-index a {
  display: inline-block;
  padding: 6px 0;
  font-size: 14px;
  color: rgba(245, 242, 234, 0.7);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.25s ease, border-color 0.25s ease;
}

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

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

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 40px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(46, 216, 230, 0.28) 55%, rgba(46, 216, 230, 0) 100%);
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 clamp(34px, 4.4vw, 52px) 38px;
}

.page-about .timeline__dot {
  position: absolute;
  left: 0;
  top: 6px;
  width: 11px;
  height: 11px;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(123, 240, 123, 0.14);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .timeline__dot--live {
  background: var(--flame);
  box-shadow: 0 0 0 4px rgba(255, 90, 31, 0.18);
}

.page-about .timeline__item:hover .timeline__dot {
  transform: scale(1.55);
  box-shadow: 0 0 0 7px rgba(123, 240, 123, 0.2);
}

.page-about .timeline__item--now:hover .timeline__dot {
  box-shadow: 0 0 0 7px rgba(255, 90, 31, 0.24);
}

.page-about .timeline__year {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--cyan);
}

.page-about .timeline__item--now .timeline__year {
  color: var(--flame);
}

.page-about .timeline__title {
  margin: 10px 0 0;
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .timeline__text {
  margin: 10px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(245, 242, 234, 0.7);
}

/* ---------- 内容生产 ---------- */
.page-about .making-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 60px);
  margin-top: clamp(28px, 4vw, 44px);
}

.page-about .work-rhythm {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(28px, 4vw, 42px);
  background: var(--about-rule);
  border: 2px solid var(--ink-2);
}

.page-about .rhythm-card {
  padding: 22px 20px;
  background: var(--ink);
  transition: background 0.3s ease;
}

.page-about .rhythm-card:hover {
  background: var(--ink-2);
}

.page-about .rhythm-card__title {
  margin: 0;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--flame);
}

.page-about .rhythm-card__text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(245, 242, 234, 0.72);
}

.page-about .making-grid__figure {
  margin: 0;
}

.page-about .making-grid__figure figcaption {
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--rock);
}

/* ---------- 合作机构 ---------- */
.page-about .partners-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 64px);
  margin-top: clamp(26px, 4vw, 40px);
}

.page-about .partner-types {
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--about-rule-dark);
}

.page-about .partner-types li {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 16px 0;
  border-bottom: 2px solid var(--about-rule-dark);
}

.page-about .partner-types__key {
  font-family: var(--mono);
  font-size: 17px;
  font-weight: 800;
  color: var(--black);
}

.page-about .partner-types__val {
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(4, 16, 28, 0.74);
}

.page-about .partners-grid__map {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-about .region-map__caption {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: rgba(4, 16, 28, 0.55);
}

.page-about .region-map {
  display: grid;
  grid-template-columns: repeat(10, 14px);
  gap: 7px;
}

.page-about .region-map span {
  width: 14px;
  height: 14px;
  background: var(--ink-2);
  transition: transform 0.25s ease, background 0.25s ease;
}

.page-about .region-map span.is-hot {
  background: var(--flame);
}

.page-about .region-map span:hover {
  transform: scale(1.4);
  background: var(--cyan);
}

.page-about .region-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
}

.page-about .region-legend__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: rgba(4, 16, 28, 0.66);
}

.page-about .region-legend__dot {
  width: 10px;
  height: 10px;
  display: inline-block;
}

.page-about .region-legend__dot--cyan {
  background: var(--ink-2);
}

.page-about .region-legend__dot--flame {
  background: var(--flame);
}

.page-about .partners-figure {
  margin-top: 6px;
}

/* ---------- 团队构成 ---------- */
.page-about .bars {
  margin-top: clamp(30px, 4.2vw, 48px);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .bar-row {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "label value"
    "track track";
  gap: 10px 16px;
  align-items: center;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--about-rule-dark);
}

.page-about .bar-label {
  grid-area: label;
  font-size: 15px;
  font-weight: 700;
  color: var(--black);
}

.page-about .bar-track {
  grid-area: track;
  display: block;
  position: relative;
  height: 16px;
  background: rgba(4, 16, 28, 0.1);
  overflow: hidden;
}

.page-about .bar-fill {
  display: block;
  height: 100%;
  transition: width 0.5s ease;
}

.page-about .bar-fill--cyan {
  background: var(--ink-2);
}

.page-about .bar-fill--flame {
  background: var(--flame);
}

.page-about .bar-fill--lime {
  background: #4b8f4b;
}

.page-about .bar-value {
  grid-area: value;
  font-family: var(--mono);
  font-size: 17px;
  font-weight: 800;
  color: var(--black);
  opacity: 0.82;
  transform: translateX(6px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.page-about .bar-row:hover .bar-value {
  opacity: 1;
  transform: translateX(0);
}

.page-about .team-notes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: clamp(30px, 4vw, 44px);
}

.page-about .team-note {
  padding-left: 18px;
  border-left: 3px solid var(--ink-2);
}

.page-about .team-note__title {
  margin: 0;
  font-size: 16px;
  font-weight: 800;
  color: var(--black);
}

.page-about .team-note__text {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(4, 16, 28, 0.72);
}

/* ---------- 行业认可 ---------- */
.page-about #recognition .about-copy {
  color: rgba(4, 16, 28, 0.74);
}

.page-about .honor-list {
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--black);
}

.page-about .honor-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 24px 0;
  border-bottom: 2px solid rgba(4, 16, 28, 0.14);
  transition: background 0.3s ease, padding-left 0.3s ease;
}

.page-about .honor-item:hover {
  background: rgba(230, 207, 168, 0.34);
  padding-left: 14px;
}

.page-about .honor-item__year {
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 800;
  color: var(--flame);
}

.page-about .honor-item__title {
  margin: 0;
  font-size: clamp(18px, 2.4vw, 23px);
  font-weight: 800;
  color: var(--black);
}

.page-about .honor-item__text {
  margin: 8px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(4, 16, 28, 0.72);
}

.page-about .honor-close {
  margin: clamp(28px, 4vw, 42px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(4, 16, 28, 0.74);
}

.page-about .honor-close a {
  color: var(--black);
  font-weight: 700;
  border-bottom: 2px solid var(--flame);
  text-decoration: none;
}

.page-about .honor-close a:hover {
  color: var(--flame);
}

/* ---------- 合作方向收束 ---------- */
.page-about .join-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 64px);
}

.page-about .join-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(28px, 4vw, 40px);
}

.page-about .join-grid__figure {
  margin: 0;
}

.page-about .join-grid__figure figcaption {
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--rock);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .work-rhythm {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .bar-row {
    grid-template-columns: minmax(180px, 1fr) minmax(0, 2.4fr) 88px;
    grid-template-areas: "label track value";
    gap: 20px;
  }

  .page-about .honor-item {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(260px, 0.9fr);
    gap: clamp(40px, 5vw, 72px);
  }

  .page-about .making-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .partners-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-about .join-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .page-about .about-split {
    grid-template-columns: minmax(240px, 0.62fr) minmax(0, 1.38fr);
    gap: clamp(40px, 5vw, 88px);
  }

  .page-about .about-split__aside {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__dot,
  .page-about .region-map span,
  .page-about .bar-fill,
  .page-about .bar-value,
  .page-about .rhythm-card,
  .page-about .honor-item,
  .page-about .about-index a {
    transition: none;
  }
}
<<<END>>>