.page-about {
  --ab-band: 1160px;
  --ab-axis-pad: 30px;
  --ab-dot: 15px;
  position: relative;
  padding: clamp(18px, 3.5vw, 40px) clamp(16px, 4vw, 40px) clamp(56px, 9vw, 108px);
  color: var(--paper-100);
  font-family: var(--font-body);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  max-width: var(--ab-band);
  margin: 0 auto clamp(20px, 3.6vw, 36px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  max-width: var(--ab-band);
  margin: 0 auto;
  display: grid;
  gap: clamp(24px, 4vw, 46px);
}

.page-about .about-hero__copy { order: 1; }
.page-about .about-hero__media { order: 2; margin: 0; }

.page-about .about-hero__copy .eyebrow {
  display: inline-block;
  color: var(--gold-500);
  border: 1px solid var(--line-500);
  padding: 5px 12px;
  letter-spacing: 0.14em;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.2vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper-100);
  margin: 16px 0 16px;
}

.page-about .about-hero__lead {
  max-width: 64ch;
  color: var(--paper-dim);
  font-size: clamp(15px, 1.55vw, 17.5px);
  line-height: 1.85;
}

.page-about .about-hero__actions {
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-about .about-hero__media {
  border: 2px solid var(--line-500);
  background: var(--ink-700);
  box-shadow: var(--hard-2);
}

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

@media (min-width: 920px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
    align-items: center;
    gap: clamp(34px, 5vw, 76px);
  }
}

/* ---------- 通用区块 ---------- */
.page-about .about-section {
  max-width: var(--ab-band);
  margin: clamp(60px, 9vw, 122px) auto 0;
}

.page-about .about-section__head {
  margin-bottom: clamp(24px, 3.6vw, 46px);
}

.page-about .about-section__head .eyebrow {
  display: block;
  margin-bottom: 12px;
  color: var(--gold-500);
  letter-spacing: 0.14em;
}

.page-about .about-section__head .section-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.4vw, 40px);
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--paper-100);
}

.page-about .about-section__intro {
  margin-top: 14px;
  max-width: 66ch;
  color: var(--paper-dim);
  line-height: 1.82;
  font-size: clamp(15px, 1.5vw, 16.5px);
}

/* ---------- 01 缘起 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-about .about-origin__text p {
  color: var(--paper-dim);
  line-height: 1.86;
  font-size: clamp(15px, 1.5vw, 16.5px);
  max-width: 68ch;
}

.page-about .about-origin__text p + p { margin-top: 16px; }

.page-about .about-origin__side {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  border-top: 2px solid var(--line-500);
  border-bottom: 2px solid var(--line-500);
  padding: clamp(18px, 3vw, 28px) 0;
}

.page-about .about-origin__side .annotation--vertical {
  writing-mode: vertical-rl;
  color: var(--slate-200);
  font-size: 12px;
  letter-spacing: 0.28em;
  line-height: 1;
  flex: 0 0 auto;
}

.page-about .about-origin__facts {
  display: grid;
  gap: 14px;
  flex: 1 1 auto;
}

.page-about .about-origin__fact {
  display: flex;
  align-items: baseline;
  gap: 14px;
  border-bottom: 1px dashed var(--line-500);
  padding-bottom: 10px;
}

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

.page-about .about-origin__fact-num {
  color: var(--gold-500);
  font-size: 20px;
  font-weight: 700;
  min-width: 5.4em;
}

.page-about .about-origin__fact-label {
  color: var(--paper-faint);
  font-size: 13.5px;
  letter-spacing: 0.04em;
}

@media (min-width: 880px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: clamp(38px, 5vw, 72px);
    align-items: start;
  }
}

/* ---------- 02 版本轴 ---------- */
.page-about .about-axis {
  --ab-pad: 34px;
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--ab-pad);
  border-left: 2px solid var(--line-500);
}

.page-about .about-axis__item {
  position: relative;
  padding-bottom: clamp(26px, 4vw, 46px);
}

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

.page-about .about-axis__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--ab-pad) - (var(--ab-dot) / 2) + 1px);
  top: 4px;
  width: var(--ab-dot);
  height: var(--ab-dot);
  background: var(--gold-500);
  border: 2px solid var(--ink-900);
  box-shadow: 0 0 0 1px var(--gold-500);
  transform: rotate(45deg);
}

.page-about .about-axis__meta {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 8px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
}

.page-about .about-axis__ver {
  color: var(--cinnabar-500);
  font-weight: 700;
}

.page-about .about-axis__year {
  color: var(--gold-500);
}

.page-about .about-axis__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16.5px, 1.95vw, 21px);
  line-height: 1.48;
  color: var(--paper-100);
  margin-bottom: 6px;
}

.page-about .about-axis__desc {
  color: var(--paper-dim);
  font-size: 15px;
  line-height: 1.78;
  max-width: 62ch;
}

.page-about .about-axis__item:hover::before {
  background: var(--gold-300);
}

@media (min-width: 1024px) {
  .page-about .about-axis { --ab-pad: 48px; }
  .page-about .about-axis__body { max-width: 640px; }
  .page-about .about-axis__item:nth-child(even) .about-axis__body {
    margin-left: clamp(0px, 3.5vw, 58px);
    max-width: 590px;
  }
}

/* ---------- 03 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 14px;
}

.page-about .about-team__cell {
  border: 2px solid var(--line-500);
  background: var(--ink-700);
  box-shadow: var(--hard-1);
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}

.page-about .about-team__cell:hover {
  transform: translate(-2px, -4px);
  box-shadow: var(--hard-2);
  border-color: var(--gold-500);
}

.page-about .about-team__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: clamp(16px, 2.2vw, 22px) clamp(16px, 2.4vw, 22px);
  text-align: left;
  cursor: pointer;
  background: transparent;
  border: 0;
  color: var(--paper-100);
  font-family: inherit;
}

.page-about .about-team__idx {
  color: var(--gold-500);
  font-size: 13px;
  letter-spacing: 0.12em;
  flex: 0 0 auto;
}

.page-about .about-team__label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 1.9vw, 19px);
  flex: 1 1 auto;
  color: var(--paper-100);
}

.page-about .about-team__size {
  color: var(--slate-200);
  font-size: 12.5px;
  flex: 0 0 auto;
}

.page-about .about-team__trigger .disclosure__mark {
  flex: 0 0 auto;
  color: var(--gold-500);
  font-family: var(--font-mono);
  font-size: 16px;
}

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

.page-about .about-team__list li {
  position: relative;
  padding-left: 20px;
  color: var(--paper-dim);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-about .about-team__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 7px;
  height: 7px;
  background: var(--gold-500);
  transform: rotate(45deg);
}

.page-about .about-team__media {
  margin: clamp(24px, 3.5vw, 40px) 0 0;
  border: 2px solid var(--line-500);
  background: var(--ink-700);
  box-shadow: var(--hard-1);
}

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

@media (min-width: 760px) {
  .page-about .about-team {
    grid-template-columns: 1.15fr 1fr 1fr;
    align-items: start;
    gap: 18px;
  }
  .page-about .about-team__media {
    margin-left: auto;
    max-width: 62%;
  }
}

/* ---------- 04 合作 ---------- */
.page-about .about-partners {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-partners__item {
  display: flex;
  gap: clamp(16px, 3vw, 30px);
  align-items: flex-start;
  border: 2px solid var(--line-500);
  background: var(--ink-850);
  padding: clamp(18px, 2.6vw, 28px);
  box-shadow: var(--hard-1);
  transition: border-color .22s ease, transform .22s ease;
}

.page-about .about-partners__item:hover {
  border-color: var(--gold-500);
  transform: translateY(-3px);
}

.page-about .about-partners__item--honor {
  background: linear-gradient(135deg, rgba(201,162,39,.16), rgba(10,35,31,.9) 62%);
  border-color: var(--gold-500);
}

.page-about .about-partners__num {
  flex: 0 0 auto;
  color: var(--gold-500);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1;
  min-width: 2.6em;
}

.page-about .about-partners__item--honor .about-partners__num {
  color: var(--cinnabar-500);
}

.page-about .about-partners__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 1.9vw, 19.5px);
  line-height: 1.42;
  color: var(--paper-100);
  margin-bottom: 6px;
}

.page-about .about-partners__body p {
  color: var(--paper-dim);
  font-size: 15px;
  line-height: 1.78;
  max-width: 58ch;
}

.page-about .about-partners__texture {
  margin: clamp(22px, 3.4vw, 38px) 0 0;
  border-top: 2px solid var(--line-500);
  border-bottom: 2px solid var(--line-500);
  overflow: hidden;
}

.page-about .about-partners__texture img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  opacity: .78;
  mix-blend-mode: luminosity;
}

@media (min-width: 880px) {
  .page-about .about-partners {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 18px;
  }
  .page-about .about-partners__item--honor { grid-column: 1 / -1; }
}

/* ---------- 05 覆盖 ---------- */
.page-about .about-reach__panel {
  position: relative;
  border: 2px solid var(--line-500);
  background: var(--ink-850);
  padding: clamp(22px, 3.6vw, 44px);
  box-shadow: var(--hard-1);
  overflow: hidden;
}

.page-about .about-reach__stats {
  position: relative;
  z-index: 1;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-reach__dots {
  position: absolute;
  right: -60px;
  bottom: -70px;
  width: 320px;
  height: 260px;
  background-image: radial-gradient(circle, rgba(201,162,39,.75) 2px, transparent 2.6px);
  background-size: 26px 26px;
  opacity: .5;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(ellipse at 70% 70%, #000 30%, transparent 72%);
  mask-image: radial-gradient(ellipse at 70% 70%, #000 30%, transparent 72%);
}

.page-about .about-reach__note {
  position: relative;
  z-index: 1;
  margin-top: clamp(20px, 3vw, 30px);
  max-width: 64ch;
  color: var(--paper-dim);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-reach__cta {
  margin-top: clamp(22px, 3.4vw, 38px);
  border-left: 4px solid var(--gold-500);
  background: var(--ink-700);
  padding: clamp(20px, 3vw, 32px);
}

.page-about .about-reach__cta-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 2.3vw, 25px);
  color: var(--paper-100);
  margin-bottom: 10px;
}

.page-about .about-reach__cta-text {
  color: var(--paper-dim);
  font-size: 15.5px;
  line-height: 1.8;
  max-width: 62ch;
  margin-bottom: 18px;
}

.page-about .about-reach__link {
  color: var(--gold-300);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about .about-reach__link:hover {
  color: var(--gold-500);
}
<<<END>>>