.page-about {
  display: block;
  overflow-x: hidden;
  background: var(--ink-900);
  color: var(--silver);
}

.page-about .section {
  padding-block: clamp(46px, 7vw, 92px);
}

.page-about .about-head {
  max-width: 62ch;
}

.page-about .about-head .lede {
  margin-top: 12px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(22px, 4vw, 44px) 0 clamp(38px, 6vw, 76px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(90% 70% at 100% 0%, rgba(184, 255, 61, 0.16), transparent 62%),
    linear-gradient(155deg, var(--ink-800) 0%, var(--ink-900) 64%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  right: -16%;
  top: -24%;
  width: 62%;
  height: 148%;
  background: linear-gradient(150deg, rgba(45, 74, 62, 0.8), rgba(13, 42, 33, 0) 70%);
  clip-path: polygon(34% 0, 100% 8%, 100% 100%, 0 86%);
  pointer-events: none;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 32px);
}

.page-about .about-hero-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(34px, 8vw, 74px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-about .about-title-mark {
  display: block;
  color: var(--lime);
}

.page-about .about-hero-copy .lede {
  margin-top: 18px;
  max-width: 46ch;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-about .about-snapshot {
  align-self: start;
  padding: clamp(16px, 3vw, 26px);
  border: 2px solid var(--moss);
  border-radius: var(--radius-sm);
  background: rgba(13, 42, 33, 0.82);
  box-shadow: var(--shadow-hard);
}

.page-about .about-snapshot-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--steel);
  text-transform: uppercase;
}

.page-about .about-snapshot-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-k {
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
  color: var(--steel);
}

.page-about .about-v {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.4vw, 25px);
  font-weight: 600;
  color: var(--fog);
  line-height: 1.1;
}

.page-about .about-unit {
  margin-left: 3px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 400;
  color: var(--steel);
}

/* ---------- 时间轴 ---------- */
.page-about .about-origin {
  background: linear-gradient(180deg, var(--ink-900), var(--ink-800) 88%, var(--ink-900));
}

.page-about .about-timeline {
  position: relative;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--lime), var(--moss) 38%, var(--line));
}

.page-about .about-tl-item {
  position: relative;
  padding: 0 0 28px 30px;
}

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

.page-about .about-tl-item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(184, 255, 61, 0.14);
}

.page-about .about-tl-year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 600;
  color: var(--lime);
  letter-spacing: 0.04em;
}

.page-about .about-tl-body h3 {
  margin: 6px 0 8px;
  color: var(--fog);
}

.page-about .about-tl-body p {
  margin: 0;
  max-width: 60ch;
  color: var(--silver);
  line-height: 1.75;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  border-top: 1px solid var(--line-soft);
}

.page-about .about-team-grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

.page-about .about-roles {
  margin-top: clamp(20px, 3vw, 30px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-role {
  border-top: 1px solid var(--line);
  padding: 14px 0 16px;
}

.page-about .about-role summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(16px, 2.2vw, 19px);
  font-weight: 600;
  color: var(--fog);
}

.page-about .about-role summary::-webkit-details-marker {
  display: none;
}

.page-about .about-role summary::after {
  content: "＋";
  flex: none;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--steel);
}

.page-about .about-role[open] summary {
  color: var(--lime);
}

.page-about .about-role[open] summary::after {
  content: "－";
  color: var(--lime);
}

.page-about .about-role p {
  margin: 10px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

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

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--moss);
  border-radius: var(--radius-sm);
  background: var(--ink-700);
}

.page-about .about-figure .media-caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 流程 ---------- */
.page-about .about-process {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink-800), var(--ink-900));
}

.page-about .about-process-figure {
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-steps {
  display: grid;
  gap: 2px;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-step {
  padding: 18px 0 20px;
  border-top: 1px solid var(--line);
}

.page-about .about-step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .about-step h3 {
  margin: 8px 0 6px;
  color: var(--fog);
}

.page-about .about-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 四类人 ---------- */
.page-about .about-aud-list {
  display: grid;
  gap: 16px;
  margin-top: clamp(24px, 4vw, 38px);
}

.page-about .about-aud {
  padding: 20px 18px 22px;
  border-left: 3px solid var(--moss);
  background: linear-gradient(100deg, rgba(13, 42, 33, 0.92), rgba(6, 19, 15, 0.32));
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-about .about-aud:hover {
  border-left-color: var(--lime);
  transform: translateY(-2px);
}

.page-about .about-aud h3 {
  margin: 12px 0 8px;
  color: var(--fog);
  font-size: clamp(18px, 2.3vw, 22px);
}

.page-about .about-aud p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 合作 ---------- */
.page-about .about-partner-grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  margin-top: clamp(24px, 4vw, 38px);
}

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

.page-about .about-stat {
  padding: 18px 16px;
  background: var(--ink-800);
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 44px);
  font-weight: 600;
  line-height: 1;
  color: var(--lime);
}

.page-about .about-stat-unit {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--silver);
  margin-left: 4px;
}

.page-about .about-stat-label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--steel);
}

.page-about .about-awards-box {
  padding: clamp(18px, 3vw, 26px);
  border: 2px solid var(--moss);
  background: rgba(13, 42, 33, 0.7);
  box-shadow: var(--shadow-hard);
}

.page-about .about-awards-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--steel);
  text-transform: uppercase;
}

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

.page-about .about-awards li {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 15px;
  color: var(--fog);
}

.page-about .about-awards-note {
  margin: 18px 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 版本路线 ---------- */
.page-about .about-versions {
  background: linear-gradient(180deg, var(--ink-900), var(--ink-800) 70%, var(--ink-900));
}

.page-about .about-versions-figure {
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-about .filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--silver);
  font-family: var(--font-mono);
  font-size: 13px;
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-about .filter-chip:hover {
  border-color: var(--lime);
  color: var(--fog);
}

.page-about .filter-chip.is-active {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink-900);
}

.page-about .filter-count {
  font-size: 11px;
  opacity: 0.65;
}

.page-about .filter-chip.is-active .filter-count {
  opacity: 0.85;
}

.page-about .filter-empty {
  margin: 18px 0 0;
  font-size: 14px;
  color: var(--steel);
}

.page-about .about-ver-list {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}

.page-about .about-ver {
  display: grid;
  gap: 8px;
  padding: 18px 18px 20px;
  border-left: 3px solid var(--moss);
  background: linear-gradient(90deg, rgba(13, 42, 33, 0.92), rgba(6, 19, 15, 0.3));
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-about .about-ver:hover {
  border-left-color: var(--amber);
  transform: translateX(3px);
}

.page-about [data-filter-item][hidden] {
  display: none;
}

.page-about .about-ver-year {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 600;
  line-height: 1;
  color: var(--lime);
  letter-spacing: 0.03em;
}

.page-about .about-ver-body h3 {
  margin: 0 0 8px;
  color: var(--fog);
  font-size: clamp(18px, 2.3vw, 22px);
}

.page-about .about-ver-body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  display: grid;
  gap: 20px;
  padding: clamp(22px, 4vw, 40px);
  border: 2px solid var(--moss);
  border-radius: var(--radius-sm);
  background:
    linear-gradient(120deg, rgba(184, 255, 61, 0.12), rgba(6, 19, 15, 0) 58%),
    var(--ink-800);
  box-shadow: var(--shadow-hard);
}

.page-about .about-cta h2 {
  margin: 10px 0 12px;
}

.page-about .about-cta p {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .about-cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-about .about-partner-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-aud-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 880px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.82fr);
    align-items: start;
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }

  .page-about .about-partner-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
  }

  .page-about .about-timeline::before {
    left: 132px;
  }

  .page-about .about-tl-item {
    display: grid;
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 42px;
    padding: 0 0 34px;
  }

  .page-about .about-tl-item::before {
    left: 127px;
    top: 12px;
  }

  .page-about .about-tl-year {
    text-align: right;
    font-size: clamp(26px, 2.6vw, 34px);
    line-height: 1;
  }

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

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

  .page-about .about-step {
    padding: 20px 16px 8px;
    border-top: 1px solid var(--line);
    border-right: 1px solid var(--line-soft);
  }

  .page-about .about-step:last-child {
    border-right: 0;
  }

  .page-about .about-ver {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .about-aud-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
<<<END>>>