.page-about {
  --ab-slant: 4deg;
  --ab-gap: clamp(72px, 10vw, 140px);
  --ab-max: 1180px;
  background: var(--off-white);
  color: var(--graphite);
  overflow-x: hidden;
}

.page-about [id] {
  scroll-margin-top: 140px;
}

/* ---------- 报头 ---------- */

.page-about .about-hero {
  position: relative;
  background: var(--ink-green);
  color: var(--off-white);
  padding: clamp(28px, 4vw, 44px) 0 clamp(64px, 8vw, 112px);
  overflow: hidden;
}

.page-about .about-hero__glow {
  position: absolute;
  right: -14%;
  top: -30%;
  width: 60vw;
  height: 60vw;
  max-width: 720px;
  max-height: 720px;
  background: radial-gradient(circle, rgba(216, 244, 64, 0.16) 0%, rgba(216, 244, 64, 0) 68%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
}

.page-about .about-hero .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(233, 234, 227, 0.55);
  margin-bottom: clamp(32px, 5vw, 56px);
}

.page-about .about-hero .breadcrumbs__item {
  color: rgba(233, 234, 227, 0.6);
  text-decoration: none;
}

.page-about .about-hero a.breadcrumbs__item:hover {
  color: var(--fluo);
}

.page-about .about-hero .breadcrumbs__sep {
  color: rgba(233, 234, 227, 0.3);
}

.page-about .about-hero .breadcrumbs__item--current {
  color: var(--fluo);
}

.page-about .about-hero__eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fluo);
  border: 1px solid rgba(216, 244, 64, 0.4);
  border-radius: var(--r-pill);
  padding: 7px 16px;
  margin: 0 0 clamp(20px, 3vw, 32px);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(52px, 12vw, 124px);
  line-height: 0.92;
  letter-spacing: -0.025em;
  margin: 0 0 clamp(24px, 3.4vw, 40px);
  color: var(--off-white);
}

.page-about .about-hero__mark {
  display: block;
  color: var(--fluo);
}

.page-about .about-hero__lead {
  max-width: 62ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.78;
  color: rgba(233, 234, 227, 0.82);
  margin: 0 0 clamp(40px, 6vw, 72px);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 0;
  padding: clamp(24px, 3vw, 34px) 0 0;
  border-top: 1px solid rgba(233, 234, 227, 0.16);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 32px);
}

.page-about .about-fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-fact__num {
  font-size: clamp(30px, 4.4vw, 46px);
  font-weight: 700;
  line-height: 1;
  color: var(--fluo);
  letter-spacing: -0.02em;
}

.page-about .about-fact__label {
  font-size: 13px;
  color: rgba(233, 234, 227, 0.62);
}

/* ---------- 主体骨架 ---------- */

.page-about .about-body {
  position: relative;
  max-width: var(--maxw-wide);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
}

.page-about .anchor-rail {
  display: none;
}

.page-about .about-section {
  padding: var(--ab-gap) 0;
}

.page-about .about-section--paper {
  background: var(--off-white);
}

.page-about .about-section--line {
  background: var(--line-grey);
  border-radius: clamp(24px, 3vw, 40px);
  padding-left: clamp(20px, 3vw, 40px);
  padding-right: clamp(20px, 3vw, 40px);
  margin: 0 calc(-1 * clamp(0px, 1vw, 12px));
}

.page-about .about-section--white {
  background: var(--white);
  border-radius: clamp(24px, 3vw, 40px);
  padding-left: clamp(20px, 3vw, 40px);
  padding-right: clamp(20px, 3vw, 40px);
  margin: 0 calc(-1 * clamp(0px, 1vw, 12px));
}

.page-about .container {
  max-width: var(--ab-max);
  margin: 0 auto;
  width: 100%;
}

/* ---------- 章节标题组 ---------- */

.page-about .about-head {
  max-width: 780px;
  margin-bottom: clamp(40px, 6vw, 72px);
}

.page-about .about-section__num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--graphite);
  opacity: 0.55;
  margin-bottom: 14px;
}

.page-about .about-section__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 5.4vw, 62px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--ink-green);
  margin: 0 0 18px;
}

.page-about .about-head__lead {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  margin: 0;
  color: var(--graphite);
}

.page-about .about-head--dark .about-section__num {
  color: var(--fluo);
  opacity: 0.75;
}

.page-about .about-head--dark .about-section__title {
  color: var(--white);
}

.page-about .about-head--dark .about-head__lead {
  color: rgba(233, 234, 227, 0.76);
}

.page-about .about-lead {
  font-size: clamp(17px, 1.9vw, 21px);
  line-height: 1.7;
  color: var(--ink-green);
  font-weight: 600;
  margin: 0 0 24px;
}

.page-about .about-closing {
  margin: 32px 0 0;
  padding-left: 20px;
  border-left: 3px solid var(--fluo);
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink-green);
}

/* ---------- 左右分栏 ---------- */

.page-about .about-split {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-about .about-split__aside {
  align-self: start;
}

.page-about .about-split__main p {
  font-size: 16px;
  line-height: 1.85;
  margin: 0 0 20px;
}

/* ---------- 痛点 ---------- */

.page-about .about-pains {
  display: grid;
  gap: clamp(20px, 2.6vw, 28px);
  margin-bottom: clamp(48px, 7vw, 88px);
}

.page-about .pain-card {
  background: var(--white);
  border-radius: var(--r-card);
  padding: clamp(24px, 3vw, 36px);
  border-left: 6px solid var(--ref-red);
}

.page-about .pain-card__title {
  font-family: var(--font-body);
  font-size: clamp(17px, 1.8vw, 20px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink-green);
  margin: 0 0 14px;
}

.page-about .pain-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
}

/* ---------- 四个模块 ---------- */

.page-about .about-modules {
  display: grid;
  gap: clamp(24px, 3vw, 40px);
}

.page-about .about-modules__intro h3 {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.8vw, 30px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink-green);
  margin: 0;
}

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

.page-about .module-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 16px;
  padding: 22px 0;
  border-top: 1px solid rgba(76, 84, 78, 0.18);
}

.page-about .module-item:last-child {
  border-bottom: 1px solid rgba(76, 84, 78, 0.18);
}

.page-about .module-item__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--r-pill);
  background: var(--ink-green);
  color: var(--fluo);
  font-size: 13px;
  font-weight: 700;
}

.page-about .module-item h4 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-green);
  letter-spacing: 0.01em;
}

.page-about .module-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
}

/* ---------- 五步流程 ---------- */

.page-about .about-process {
  position: relative;
  isolation: isolate;
  background: var(--ink-green-deep);
  border-radius: clamp(24px, 3vw, 40px);
  padding: var(--ab-gap) 0;
  margin: 0 calc(-1 * clamp(0px, 1vw, 12px));
  overflow: hidden;
}

.page-about .about-process__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.26;
  z-index: -2;
}

.page-about .about-process__veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(6, 28, 22, 0.94) 0%, rgba(6, 28, 22, 0.78) 55%, rgba(46, 42, 91, 0.72) 100%);
  z-index: -1;
}

.page-about .about-process__inner {
  padding: 0 clamp(20px, 3.4vw, 48px);
}

.page-about .process-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(20px, 2.4vw, 26px);
}

.page-about .process-step {
  position: relative;
  background: rgba(11, 46, 36, 0.55);
  border: 1px solid rgba(233, 234, 227, 0.14);
  border-radius: var(--r-card);
  padding: clamp(22px, 2.6vw, 30px);
  backdrop-filter: blur(2px);
}

.page-about .process-step__num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(38px, 5vw, 56px);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--fluo);
  opacity: 0.9;
  margin-bottom: 14px;
}

.page-about .process-step__title {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.3vw, 25px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--white);
  margin: 0 0 12px;
}

.page-about .process-step p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(233, 234, 227, 0.82);
}

.page-about .process-step__meta {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--fluo);
  opacity: 0.78;
}

/* ---------- 团队 ---------- */

.page-about .team-layout {
  display: grid;
  gap: clamp(32px, 4vw, 48px);
}

.page-about .team-ring-wrap {
  display: flex;
  justify-content: center;
}

.page-about .team-ring {
  width: min(100%, 320px);
  height: auto;
}

.page-about .team-ring__total {
  font-family: var(--font-display);
  font-size: 46px;
  font-weight: 900;
  fill: var(--ink-green);
  letter-spacing: -0.02em;
}

.page-about .team-ring__unit {
  font-family: var(--font-body);
  font-size: 13px;
  fill: var(--graphite);
}

.page-about .team-ring__seg {
  transition: opacity 200ms var(--ease), stroke-width 200ms var(--ease);
  transform-origin: 100px 100px;
}

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

.page-about .team-legend__item {
  position: relative;
  background: var(--off-white);
  border-radius: var(--r-soft);
  padding: 18px 20px 18px 46px;
  transition: transform 220ms var(--ease), box-shadow 220ms var(--ease);
}

.page-about .team-legend__item:hover,
.page-about .team-legend__item:focus-within {
  transform: translateX(4px);
  box-shadow: 0 10px 26px rgba(11, 46, 36, 0.1);
}

.page-about .team-legend__dot {
  position: absolute;
  left: 20px;
  top: 22px;
  width: 12px;
  height: 12px;
  border-radius: var(--r-pill);
}

.page-about .team-legend__item--a .team-legend__dot {
  background: var(--fluo);
}

.page-about .team-legend__item--b .team-legend__dot {
  background: var(--ink-green);
}

.page-about .team-legend__item--c .team-legend__dot {
  background: var(--indigo);
}

.page-about .team-legend__item--d .team-legend__dot {
  background: var(--wine);
}

.page-about .team-legend__count {
  display: block;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--graphite);
  opacity: 0.7;
  margin-bottom: 4px;
}

.page-about .team-legend__name {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-green);
}

.page-about .team-legend__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
}

.page-about .team-photo {
  margin: 0;
}

.page-about .team-photo img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-card);
  object-fit: cover;
}

.page-about .team-photo .annotation {
  display: block;
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--graphite);
}

/* ---------- 时间轴 ---------- */

.page-about .about-timeline-block {
  padding: var(--ab-gap) 0;
}

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

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  gap: 18px;
  padding-bottom: clamp(56px, 8vw, 104px);
}

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

.page-about .about-timeline__year {
  align-self: start;
  justify-self: start;
  padding: 12px 26px;
  border-radius: var(--r-soft);
  background: var(--ink-green);
  transform: skewX(calc(-1 * var(--ab-slant)));
  transition: background 240ms var(--ease), color 240ms var(--ease);
}

.page-about .about-timeline__year > span {
  display: block;
  transform: skewX(var(--ab-slant));
  font-family: var(--font-display);
  font-size: clamp(32px, 5.4vw, 48px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--off-white);
}

.page-about .about-timeline__item--y2 .about-timeline__year {
  background: #1B3A30;
}

.page-about .about-timeline__item--y3 .about-timeline__year {
  background: #43262F;
}

.page-about .about-timeline__item--y4 .about-timeline__year {
  background: var(--wine);
}

.page-about .about-timeline__item:target .about-timeline__year {
  background: var(--fluo);
}

.page-about .about-timeline__item:target .about-timeline__year > span {
  color: var(--ink-green);
}

.page-about .about-timeline__body h3 {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.8vw, 30px);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--ink-green);
  margin: 0 0 14px;
}

.page-about .about-timeline__body p {
  margin: 0;
  font-size: 16px;
  line-height: 1.86;
  max-width: 58ch;
}

/* ---------- 合作生态 ---------- */

.page-about .eco-layout {
  display: grid;
  gap: clamp(32px, 4vw, 56px);
}

.page-about .eco-photo {
  margin: 0;
}

.page-about .eco-photo img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-card);
  object-fit: cover;
}

.page-about .eco-photo .annotation {
  display: block;
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-about .eco-copy h3 {
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 700;
  color: var(--ink-green);
  margin: 0 0 10px;
  padding-left: 16px;
  border-left: 3px solid var(--fluo);
}

.page-about .eco-copy h3:not(:first-child) {
  margin-top: 30px;
}

.page-about .eco-copy p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.84;
}

/* ---------- 长期跟踪 ---------- */

.page-about .track-phases {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .track-phase {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 18px;
  padding: 20px 0;
  border-top: 1px solid rgba(76, 84, 78, 0.16);
  align-items: start;
}

.page-about .track-phase:last-child {
  border-bottom: 1px solid rgba(76, 84, 78, 0.16);
}

.page-about .track-phase__tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--ink-green);
  background: var(--fluo-soft);
  border-radius: var(--r-pill);
  padding: 6px 12px;
  text-align: center;
  white-space: nowrap;
}

.page-about .track-phase p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 价值三条 ---------- */

.page-about .about-values {
  background: var(--ink-green);
  border-radius: clamp(24px, 3vw, 40px);
  padding: var(--ab-gap) 0;
  margin: 0 calc(-1 * clamp(0px, 1vw, 12px));
  color: rgba(233, 234, 227, 0.85);
}

.page-about .about-values .container {
  padding: 0 clamp(20px, 3.4vw, 48px);
}

.page-about .value-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(24px, 3vw, 32px);
}

.page-about .value-item {
  border-top: 2px solid var(--fluo);
  padding-top: 22px;
}

.page-about .value-item__idx {
  display: block;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--fluo);
  margin-bottom: 14px;
}

.page-about .value-item h3 {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, 28px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--white);
  margin: 0 0 12px;
}

.page-about .value-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.84;
}

/* ---------- 收束 ---------- */

.page-about .about-cta {
  padding: clamp(56px, 8vw, 104px) 0 clamp(72px, 9vw, 120px);
}

.page-about .about-cta__inner {
  display: grid;
  gap: clamp(28px, 3.6vw, 44px);
  background: var(--off-white);
  border: 2px solid var(--ink-green);
  border-radius: clamp(24px, 3vw, 36px);
  padding: clamp(28px, 4vw, 52px);
}

.page-about .about-cta__text h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.6vw, 42px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink-green);
  margin: 0 0 18px;
}

.page-about .about-cta__text p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.84;
  max-width: 60ch;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.page-about .about-cta__link {
  font-size: 14px;
  color: var(--ink-green);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about .about-cta__link:hover {
  color: var(--wine);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-modules {
    grid-template-columns: 300px minmax(0, 1fr);
    align-items: start;
  }

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

  .page-about .team-layout {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .team-ring-wrap {
    grid-row: span 2;
  }

  .page-about .team-photo {
    grid-column: 2;
  }

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

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(48px, 6vw, 96px);
  }

  .page-about .about-split--reverse {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }

  .page-about .about-split__aside {
    position: sticky;
    top: 140px;
  }

  .page-about .process-track {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .process-step {
    display: flex;
    flex-direction: column;
  }

  .page-about .process-step__meta {
    margin-top: auto;
    padding-top: 16px;
  }

  .page-about .eco-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: clamp(40px, 6vw, 96px);
    padding-bottom: clamp(80px, 9vw, 128px);
  }

  .page-about .about-timeline__item::before {
    content: "";
    position: absolute;
    left: 100px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg, rgba(11, 46, 36, 0.28), rgba(107, 30, 46, 0.28));
  }

  .page-about .about-timeline__year {
    position: relative;
    z-index: 1;
  }
}

@media (min-width: 1280px) {
  .page-about .anchor-rail {
    display: flex;
    position: fixed;
    right: 26px;
    top: 50%;
    transform: translateY(-50%);
    flex-direction: column;
    gap: 12px;
    z-index: 20;
  }

  .page-about .anchor-rail__link {
    display: block;
    position: relative;
    padding-left: 18px;
    font-size: 12.5px;
    line-height: 1.4;
    color: var(--graphite);
    text-decoration: none;
    opacity: 0.55;
    transition: color 200ms var(--ease), opacity 200ms var(--ease);
  }

  .page-about .anchor-rail__link::before {
    content: "";
    position: absolute;
    left: 0;
    top: 6px;
    width: 8px;
    height: 2px;
    background: var(--graphite);
    transition: width 200ms var(--ease), background 200ms var(--ease);
  }

  .page-about .anchor-rail__link:hover,
  .page-about .anchor-rail__link:focus-visible {
    opacity: 1;
    color: var(--ink-green);
  }

  .page-about .anchor-rail__link:hover::before {
    width: 14px;
    background: var(--fluo);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-ring__seg,
  .page-about .team-legend__item,
  .page-about .anchor-rail__link,
  .page-about .anchor-rail__link::before {
    transition: none;
  }
}
<<<END>>>