.page-about {
  --about-pad: clamp(3rem, 7vw, 6rem);
  background: var(--ink-green);
  color: var(--mint);
  font-family: var(--font-body);
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-body);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.14;
  color: var(--paper);
}

.page-about p {
  margin: 0;
}

.page-about figure {
  margin: 0;
}

.page-about img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-about .section-head {
  max-width: 48ch;
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .section-head h2 {
  margin-top: 0.6rem;
  font-size: clamp(1.7rem, 4.4vw, 3rem);
}

.page-about .section-sub {
  margin-top: 0.85rem;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.25rem, 3vw, 2rem) clamp(3rem, 7vw, 5.5rem);
  background:
    radial-gradient(110% 70% at 88% 0%, rgba(198, 255, 74, 0.09), transparent 62%),
    var(--ink-green);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -12%;
  right: -12%;
  bottom: -10%;
  height: 54%;
  background: linear-gradient(100deg, var(--field-green), transparent 74%);
  clip-path: polygon(0 34%, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
  z-index: 0;
}

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

.page-about .about-hero .breadcrumbs {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

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

.page-about .about-hero__body {
  padding-top: 0.25rem;
}

.page-about .about-hero h1 {
  margin: 0.75rem 0 0;
  font-size: clamp(2.1rem, 6vw, 4rem);
  color: var(--paper);
}

.page-about .about-hero h1 br {
  display: none;
}

.page-about .about-lede {
  margin-top: 1.25rem;
  max-width: 46ch;
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  line-height: 1.8;
  color: var(--mint);
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem 1rem;
  margin-top: 2rem;
  padding-top: 1.35rem;
  border-top: 1px solid var(--rule);
}

.page-about .figure__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.55rem, 3.6vw, 2.35rem);
  line-height: 1;
  color: var(--lime);
}

.page-about .figure__label {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--slate);
}

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

.page-about .about-hero__media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -9px;
  height: 8px;
  background-image: repeating-linear-gradient(to right, var(--slate) 0 1px, transparent 1px 11px);
  opacity: 0.45;
}

/* ---------- 品牌主张 ---------- */

.page-about .about-creed {
  background: var(--field-green);
  border-top: 1px solid var(--rule);
  padding-block: var(--about-pad);
}

.page-about .about-creed h2 {
  font-size: clamp(2rem, 6.2vw, 3.8rem);
  color: var(--lime);
}

.page-about .creed-grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .creed-lead p {
  font-size: clamp(1.1rem, 2.2vw, 1.45rem);
  line-height: 1.75;
  color: var(--paper);
}

.page-about .creed-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.35rem;
}

.page-about .creed-list li {
  padding-left: 1rem;
  border-left: 2px solid var(--amber);
}

.page-about .creed-list h3 {
  font-size: 1.05rem;
  color: var(--paper);
}

.page-about .creed-list p {
  margin-top: 0.45rem;
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--mint);
}

/* ---------- 内容方法 ---------- */

.page-about .about-method {
  background: var(--paper);
  color: var(--ink);
  padding-block: var(--about-pad);
}

.page-about .about-method h2 {
  color: var(--ink);
}

.page-about .about-method .eyebrow {
  color: var(--field-green);
}

.page-about .about-method .section-sub {
  color: var(--field-green);
  opacity: 0.9;
}

.page-about .method-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(6, 18, 14, 0.16);
}

.page-about .method-item {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  column-gap: 0.75rem;
  row-gap: 0.4rem;
  padding-block: 1.35rem;
  border-bottom: 1px solid rgba(6, 18, 14, 0.16);
}

.page-about .method-num {
  grid-column: 1;
  grid-row: 1 / span 2;
  padding-top: 0.2rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--field-green);
}

.page-about .method-item h3 {
  grid-column: 2;
  grid-row: 1;
  font-size: 1.15rem;
  color: var(--ink);
}

.page-about .method-item p {
  grid-column: 2;
  grid-row: 2;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--field-green);
}

/* ---------- 版本档案 ---------- */

.page-about .about-archive {
  background: var(--ink-green);
  padding-block: var(--about-pad);
}

.page-about .archive-grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
}

.page-about .spines {
  list-style: none;
  margin: 0;
  padding: 0 0 0.5rem;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-about .spine {
  position: relative;
  flex: 1 0 62px;
  min-height: 240px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.6rem;
  padding: 0.8rem 0.5rem;
  scroll-snap-align: start;
  background: var(--field-green);
  border-top: 3px solid var(--rule);
  transition: flex-basis 0.22s ease, background-color 0.22s ease, box-shadow 0.22s ease;
}

.page-about .spine__index {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--slate);
}

.page-about .spine__title {
  flex: 1;
  align-self: center;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--paper);
}

.page-about .spine__note {
  display: block;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 0.7rem;
  line-height: 1.5;
  color: var(--amber);
  transition: max-height 0.24s ease, opacity 0.24s ease;
}

.page-about .spine:hover,
.page-about .spine:focus {
  flex-basis: 132px;
  background: rgba(198, 255, 74, 0.1);
  box-shadow: inset 0 0 0 1px var(--lime);
  outline: none;
}

.page-about .spine:hover .spine__note,
.page-about .spine:focus .spine__note {
  max-height: 5rem;
  opacity: 1;
}

.page-about .archive-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .archive-figure figcaption {
  margin-top: 0.75rem;
  padding-left: 0.75rem;
  border-left: 2px solid var(--slate);
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--slate);
}

.page-about .steps {
  list-style: none;
  margin: clamp(2rem, 4vw, 2.75rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.page-about .steps li {
  position: relative;
  padding: 0.85rem 0.75rem 0.85rem 1rem;
  font-size: 0.88rem;
  color: var(--paper);
  background: linear-gradient(90deg, rgba(198, 255, 74, 0.1), transparent);
  border-left: 1px solid var(--lime);
}

.page-about .steps li span {
  display: block;
  margin-bottom: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--slate);
}

/* ---------- 团队与协作 ---------- */

.page-about .about-team {
  background: var(--field-green);
  padding-block: var(--about-pad);
}

.page-about .team-grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.5rem);
}

.page-about .role-bars {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.15rem;
}

.page-about .role-row {
  display: grid;
  grid-template-columns: 4.6rem minmax(0, 1fr) 2.6rem;
  align-items: center;
  gap: 0.75rem;
}

.page-about .role-row__name {
  font-size: 0.88rem;
  color: var(--paper);
}

.page-about .role-row__track {
  display: block;
  height: 10px;
  background: rgba(168, 195, 183, 0.2);
  border-radius: 2px;
  overflow: hidden;
}

.page-about .role-row__fill {
  display: block;
  height: 100%;
}

.page-about .role-row__fill--a {
  width: 54.5%;
  background: var(--lime);
}

.page-about .role-row__fill--b {
  width: 27.3%;
  background: var(--amber);
}

.page-about .role-row__fill--c {
  width: 18.2%;
  background: var(--slate);
}

.page-about .role-row__num {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-align: right;
  color: var(--mint);
}

.page-about .team-note {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--mint);
}

.page-about .team-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .team-figure figcaption {
  margin-top: 0.75rem;
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--slate);
}

.page-about .team-partners {
  margin-top: clamp(1.75rem, 3vw, 2.25rem);
  padding-top: 1.35rem;
  border-top: 1px solid var(--rule);
}

.page-about .team-partners p {
  max-width: 62ch;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--paper);
}

/* ---------- 发展节点 ---------- */

.page-about .about-timeline {
  background: var(--ink-green);
  padding-block: var(--about-pad);
}

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

.page-about .timeline li {
  position: relative;
  padding: 0 0 1.9rem 1.75rem;
  border-left: 1px solid var(--rule);
}

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

.page-about .timeline li::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 0.4rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(198, 255, 74, 0.14);
}

.page-about .timeline__stage {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .timeline h3 {
  margin-top: 0.5rem;
  font-size: 1.1rem;
  color: var(--paper);
}

.page-about .timeline p {
  margin-top: 0.5rem;
  font-size: 0.93rem;
  line-height: 1.78;
  color: var(--mint);
}

/* ---------- 下一步 ---------- */

.page-about .about-next {
  background: var(--paper);
  color: var(--ink);
  padding-block: var(--about-pad);
}

.page-about .about-next h2 {
  color: var(--ink);
  font-size: clamp(1.7rem, 4.4vw, 2.9rem);
  margin-top: 0.6rem;
}

.page-about .about-next .eyebrow {
  color: var(--field-green);
}

.page-about .next-grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
}

.page-about .next-lead {
  margin-top: 1rem;
  max-width: 52ch;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--field-green);
}

.page-about .next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-content: start;
}

.page-about .about-next .btn--ghost {
  color: var(--ink);
  border-color: rgba(6, 18, 14, 0.34);
}

.page-about .next-contact {
  margin-top: clamp(1.75rem, 3vw, 2.25rem);
  padding-top: 1.2rem;
  border-top: 1px solid rgba(6, 18, 14, 0.16);
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--field-green);
}

/* ---------- 断点 ---------- */

@media (min-width: 560px) {
  .page-about .about-hero h1 br {
    display: inline;
  }
}

@media (min-width: 640px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-about .method-item {
    grid-template-columns: 3.5rem minmax(0, 13rem) minmax(0, 1fr);
    column-gap: 1.5rem;
    align-items: baseline;
  }

  .page-about .method-num {
    grid-column: 1;
    grid-row: 1;
    padding-top: 0;
  }

  .page-about .method-item h3 {
    grid-column: 2;
    grid-row: 1;
    font-size: 1.25rem;
  }

  .page-about .method-item p {
    grid-column: 3;
    grid-row: 1;
  }

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

  .page-about .steps li::after {
    content: "";
    position: absolute;
    right: -0.85rem;
    top: 50%;
    width: 0.85rem;
    height: 1px;
    background: var(--rule);
    transform: rotate(-26deg);
  }

  .page-about .steps li:last-child::after {
    display: none;
  }
}

@media (min-width: 860px) {
  .page-about .creed-grid {
    grid-template-columns: minmax(0, 1.8fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-about .archive-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .team-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(2rem, 4vw, 3rem);
  }

  .page-about .next-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
  }

  .page-about .timeline li {
    padding: 1.6rem 0 0;
    border-left: 0;
    border-top: 1px solid var(--rule);
  }

  .page-about .timeline li::before {
    left: 0;
    top: -5px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 46px minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: clamp(1.5rem, 3vw, 2.75rem);
  }

  .page-about .about-rail {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.15rem;
    padding-top: 0.5rem;
  }

  .page-about .about-rail__label {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.3em;
    color: var(--slate);
    white-space: nowrap;
  }

  .page-about .about-rail__scale {
    flex: 0 0 150px;
    width: 12px;
    background-image: repeating-linear-gradient(to bottom, var(--slate) 0 1px, transparent 1px 14px);
    opacity: 0.7;
  }

  .page-about .about-hero__media {
    margin-top: 0.5rem;
  }
}


<<<END>>>