.page-about {
  --about-rise: #EFEBDE;
  --about-line: rgba(14, 46, 34, 0.16);
  background: var(--paper);
  color: var(--char);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-900);
  color: var(--paper);
  padding: clamp(18px, 3vw, 30px) 0 clamp(40px, 6vw, 78px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -20%;
  width: 64%;
  height: 146%;
  background: linear-gradient(112deg, rgba(31, 122, 77, 0) 41%, rgba(31, 122, 77, 0.5) 41.4%, rgba(18, 61, 46, 0.9) 100%);
  transform: skewY(-4deg);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(115deg, rgba(200, 255, 61, 0.07) 0 1px, transparent 1px 48px);
  pointer-events: none;
  z-index: 1;
}

.page-about .about-hero .shell {
  position: relative;
  z-index: 2;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(26px, 4.5vw, 48px);
}

.page-about .about-hero .breadcrumb__link,
.page-about .about-hero .breadcrumb__item {
  color: var(--mist);
  font-size: 13px;
}

.page-about .about-hero .breadcrumb__link:hover {
  color: var(--cyan);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lime);
  text-transform: uppercase;
}

.page-about .about-hero__title {
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  font-size: clamp(36px, 7.4vw, 76px);
  line-height: 1.04;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.page-about .about-hero__title em {
  position: relative;
  display: inline-block;
  font-style: normal;
  z-index: 0;
}

.page-about .about-hero__title em::after {
  content: "";
  position: absolute;
  left: -3%;
  right: -3%;
  bottom: 0.02em;
  height: 0.16em;
  background: var(--lime);
  transform: skewX(-14deg);
  z-index: -1;
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.9vw, 18px);
  line-height: 1.78;
  color: rgba(247, 244, 234, 0.82);
}

.page-about .about-hero__nav {
  align-self: end;
}

.page-about .about-hero__toc {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--f-edge);
}

.page-about .about-hero__toc li {
  border-bottom: 1px solid var(--f-edge);
}

.page-about .about-hero__toc a {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 10px 4px;
  font-size: 14.5px;
  color: rgba(247, 244, 234, 0.78);
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease, background 0.2s ease;
}

.page-about .about-hero__toc a .mono {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .about-hero__toc a:hover,
.page-about .about-hero__toc a:focus-visible {
  color: var(--paper);
  padding-left: 10px;
  background: rgba(46, 230, 200, 0.08);
}

/* ---------- 章节通用 ---------- */
.page-about .about-chapter {
  position: relative;
  padding: clamp(46px, 7vw, 92px) 0;
}

.page-about .about-chapter--tint {
  background: rgba(169, 201, 184, 0.16);
}

.page-about .about-chapter--last {
  padding-bottom: clamp(52px, 8vw, 100px);
}

.page-about .about-chapter--ink {
  background: var(--ink-800);
  color: var(--paper);
}

.page-about .about-chapter__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-bottom: clamp(26px, 4vw, 48px);
  padding-top: clamp(14px, 2vw, 20px);
  border-top: 1px solid var(--about-line);
}

.page-about .about-chapter--ink .about-chapter__head {
  border-top-color: var(--f-edge);
}

.page-about .about-chapter__index {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(38px, 7vw, 72px);
  font-weight: 700;
  line-height: 0.82;
  letter-spacing: -0.05em;
  color: var(--green);
}

.page-about .about-chapter__index::after {
  content: "";
  display: block;
  width: 42px;
  height: 3px;
  margin-top: 12px;
  background: var(--lime);
  transform: skewX(-20deg);
}

.page-about .about-chapter--ink .about-chapter__index {
  color: var(--lime);
}

.page-about .about-chapter__title {
  margin: 0;
  font-size: clamp(23px, 3.6vw, 38px);
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: -0.015em;
}

.page-about .about-chapter__lead {
  margin: 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.78;
  color: rgba(17, 24, 20, 0.76);
}

.page-about .about-chapter--ink .about-chapter__lead {
  color: rgba(247, 244, 234, 0.78);
}

/* ---------- 01 起步 ---------- */
.page-about .about-origin {
  display: grid;
  gap: clamp(22px, 4vw, 42px);
}

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

.page-about .about-origin__figure .media__frame {
  position: relative;
  aspect-ratio: 14 / 9;
  overflow: hidden;
  background: linear-gradient(140deg, var(--ink-800), var(--green));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), calc(100% - 34px) 100%, 0 100%);
}

.page-about .about-origin__figure img,
.page-about .about-dual__figure img,
.page-about .about-network__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  max-width: 100%;
}

.page-about .about-origin__figure .media__cap,
.page-about .about-dual__figure .media__cap,
.page-about .about-network__figure .media__cap {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gray);
}

.page-about .about-chapter--ink .about-network__figure .media__cap {
  color: var(--mist);
}

.page-about .about-origin__body p {
  margin: 0 0 16px;
  font-size: clamp(15px, 1.8vw, 16.5px);
  line-height: 1.82;
}

.page-about .about-origin__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-about .about-origin__list li {
  position: relative;
  padding-left: 22px;
  font-size: 15.5px;
  line-height: 1.7;
}

.page-about .about-origin__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 9px;
  height: 9px;
  background: var(--green);
  transform: rotate(45deg);
}

/* ---------- 图片悬停说明 ---------- */
.page-about .about-media {
  position: relative;
  display: block;
}

.page-about .about-media .media__note,
.page-about .about-media__note {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 18px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--paper);
  background: linear-gradient(0deg, rgba(11, 46, 34, 0.94), rgba(11, 46, 34, 0));
  transform: translateY(100%);
  transition: transform 0.32s ease;
  pointer-events: none;
}

.page-about .about-media:hover .about-media__note,
.page-about .about-media:focus-within .about-media__note {
  transform: translateY(0);
}

/* ---------- 02 双线 ---------- */
.page-about .about-dual {
  display: grid;
  gap: clamp(16px, 2.6vw, 24px);
}

.page-about .about-dual__card {
  background: var(--paper);
  border: 1px solid var(--about-line);
  border-top: 3px solid var(--green);
  padding: clamp(20px, 3vw, 32px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-about .about-dual__tag {
  display: inline-block;
  padding: 4px 10px;
  margin-bottom: 14px;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--ink-900);
  color: var(--lime);
}

.page-about .about-dual__tag--alt {
  background: var(--green);
  color: var(--paper);
}

.page-about .about-dual__title {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 23px);
  line-height: 1.3;
  font-weight: 800;
}

.page-about .about-dual__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-dual__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.72;
}

.page-about .about-dual__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  background: var(--green);
  transform: rotate(45deg);
}

.page-about .about-dual__bridge {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: clamp(18px, 2.6vw, 28px) clamp(18px, 3vw, 32px);
  border-left: 4px solid var(--lime);
  background: rgba(169, 201, 184, 0.24);
  font-size: clamp(15px, 1.8vw, 16.5px);
  line-height: 1.82;
}

.page-about .about-dual__figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

.page-about .about-dual__figure .media__frame {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: linear-gradient(120deg, var(--ink-800), var(--green));
  clip-path: polygon(0 0, 100% 0, 100% 100%, 34px 100%, 0 calc(100% - 34px));
}

/* ---------- 03 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 34px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--lime), rgba(200, 255, 61, 0.16));
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: clamp(24px, 3.6vw, 38px);
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 7px;
  width: 12px;
  height: 12px;
  background: var(--ink-800);
  border: 2px solid var(--lime);
  transform: rotate(45deg);
}

.page-about .about-timeline__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  margin-bottom: 8px;
}

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

.page-about .about-timeline__title {
  margin: 0;
  font-size: clamp(17.5px, 2.2vw, 21px);
  line-height: 1.4;
  font-weight: 800;
  color: var(--paper);
}

.page-about .about-timeline__item p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 244, 234, 0.76);
}

/* ---------- 04 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: clamp(16px, 2.6vw, 24px);
}

.page-about .about-team__panel {
  background: var(--about-rise);
  padding: clamp(20px, 3vw, 32px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-about .about-team__panel--ink {
  background: var(--ink-900);
  color: var(--paper);
}

.page-about .about-team__panel-title {
  margin: 0 0 20px;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green-deep);
}

.page-about .about-team__panel--ink .about-team__panel-title {
  color: var(--lime);
}

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

.page-about .about-team__bar {
  display: grid;
  grid-template-columns: minmax(72px, 96px) minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
}

.page-about .about-team__label {
  font-size: 14px;
  font-weight: 600;
}

.page-about .about-team__track {
  display: block;
  position: relative;
  height: 12px;
  background: rgba(14, 46, 34, 0.12);
  overflow: hidden;
}

.page-about .about-team__fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  display: block;
  background: linear-gradient(90deg, var(--green), var(--green-deep));
}

.page-about .about-team__fill--6 { width: 33.3%; }
.page-about .about-team__fill--5 { width: 27.8%; }
.page-about .about-team__fill--4 { width: 22.2%; }
.page-about .about-team__fill--3 { width: 16.7%; }

.page-about .about-team__num {
  font-size: 12.5px;
  color: var(--char);
  white-space: nowrap;
}

.page-about .about-team__note {
  margin: 20px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(17, 24, 20, 0.78);
}

.page-about .about-team__panel--ink .about-team__note {
  color: rgba(247, 244, 234, 0.8);
}

.page-about .about-team__big {
  margin: 0 0 12px;
  font-size: clamp(46px, 8vw, 72px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--lime);
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.page-about .about-team__big span {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-about .about-team__cities {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-team__cities li {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 5px 10px;
  border: 1px solid var(--f-edge);
  color: var(--mist);
}

/* ---------- 05 合作网络 ---------- */
.page-about .about-network {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  align-items: center;
}

.page-about .about-network__svg {
  width: 100%;
  height: auto;
  display: block;
  max-width: 520px;
  margin: 0 auto;
}

.page-about .about-network__links line {
  stroke: rgba(46, 230, 200, 0.5);
  stroke-width: 1.5;
  stroke-dasharray: 4 6;
}

.page-about .about-network__hub {
  fill: var(--green);
}

.page-about .about-network__hublabel {
  fill: var(--paper);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
}

.page-about .about-network__node {
  fill: var(--lime);
}

.page-about .about-network__label {
  fill: rgba(247, 244, 234, 0.86);
  font-family: var(--font-sans);
  font-size: 13px;
}

.page-about .about-network__body p {
  margin: 0 0 16px;
  font-size: clamp(15px, 1.8vw, 16.5px);
  line-height: 1.82;
  color: rgba(247, 244, 234, 0.82);
}

.page-about .about-network__link-line {
  margin: 22px 0 0 !important;
}

.page-about .about-network__figure {
  margin: clamp(28px, 4vw, 48px) 0 0;
}

.page-about .about-network__figure .media__frame {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(120deg, var(--green-deep), var(--ink-700));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

/* ---------- 06 协作步骤 ---------- */
.page-about .about-steps {
  list-style: none;
  margin: 0 0 clamp(28px, 4vw, 46px);
  padding: 0;
  display: grid;
  gap: clamp(14px, 2.4vw, 20px);
}

.page-about .about-steps__item {
  position: relative;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--about-rise);
  border-top: 3px solid var(--green);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-about .about-steps__no {
  display: block;
  font-size: clamp(26px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: rgba(31, 122, 77, 0.42);
  margin-bottom: 10px;
}

.page-about .about-steps__item h3 {
  margin: 0 0 8px;
  font-size: clamp(16.5px, 2vw, 18.5px);
  line-height: 1.4;
  font-weight: 800;
}

.page-about .about-steps__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(17, 24, 20, 0.78);
}

.page-about .about-cta {
  position: relative;
  overflow: hidden;
  background: var(--ink-900);
  color: var(--paper);
  padding: clamp(24px, 4vw, 44px);
  display: grid;
  gap: clamp(20px, 3vw, 30px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), calc(100% - 34px) 100%, 0 100%);
}

.page-about .about-cta::after {
  content: "";
  position: absolute;
  top: -30%;
  right: -12%;
  width: 42%;
  height: 160%;
  background: linear-gradient(112deg, transparent 46%, rgba(200, 255, 61, 0.12) 46.4% 100%);
  pointer-events: none;
}

.page-about .about-cta__title {
  margin: 0 0 10px;
  font-size: clamp(19px, 2.6vw, 26px);
  line-height: 1.35;
  font-weight: 800;
}

.page-about .about-cta__text p {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(247, 244, 234, 0.8);
}

.page-about .about-cta__actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .about-chapter__head {
    grid-template-columns: minmax(84px, 148px) minmax(0, 1fr);
    column-gap: clamp(20px, 3vw, 36px);
    row-gap: 12px;
    align-items: start;
  }

  .page-about .about-chapter__index {
    grid-row: 1 / span 3;
  }

  .page-about .about-chapter__title,
  .page-about .about-chapter__lead {
    grid-column: 2;
  }

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

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

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 860px) {
  .page-about .about-origin {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
    align-items: center;
    gap: clamp(28px, 4.4vw, 56px);
  }

  .page-about .about-origin__figure {
    transform: translateY(-20px);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.82fr);
    align-items: end;
    gap: clamp(32px, 5vw, 64px);
  }

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

  .page-about .about-dual__card:nth-child(2) {
    margin-top: clamp(24px, 4vw, 54px);
  }

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

  .page-about .about-team__panel--ink {
    margin-top: clamp(20px, 3vw, 40px);
  }

  .page-about .about-network {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: clamp(28px, 4.4vw, 56px);
  }
}

@media (min-width: 1080px) {
  .page-about .about-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-about .about-team__bar {
    grid-template-columns: minmax(64px, 84px) minmax(0, 1fr) auto;
    gap: 8px;
  }

  .page-about .about-team__label {
    font-size: 13px;
  }

  .page-about .about-hero__toc a {
    font-size: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-media__note,
  .page-about .about-hero__toc a {
    transition: none;
  }

  .page-about .about-origin__figure {
    transform: none;
  }
}
<<<END>>>