.page-about {
  --about-rule: rgba(143, 163, 184, 0.18);
  --about-text: rgba(232, 241, 245, 0.84);
  --about-text-dim: rgba(232, 241, 245, 0.72);
  padding-bottom: 96px;
}

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

/* 面包屑 */
.page-about .breadcrumb {
  padding: 20px 0 0;
}

.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--silver);
}

.page-about .breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-about .breadcrumb li + li::before {
  content: "/";
  color: rgba(143, 163, 184, 0.45);
}

.page-about .breadcrumb a {
  color: var(--silver);
  text-decoration: none;
  transition: color var(--t) var(--ease);
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--mint-soft);
}

/* 分屏骨架 */
.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-top: 28px;
}

.page-about .about-rail,
.page-about .about-canvas {
  min-width: 0;
}

.page-about .about-rail__head {
  display: flex;
  align-items: flex-start;
  gap: 18px;
}

.page-about .about-rail .vnote {
  flex: none;
  padding-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--mint);
  white-space: nowrap;
}

.page-about .about-rail__title {
  min-width: 0;
}

.page-about .about-rail__title .eyebrow {
  margin: 0 0 14px;
}

.page-about .about-rail h1 {
  margin: 0 0 20px;
  font-size: clamp(32px, 7.4vw, 58px);
  line-height: 1.06;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-about .about-rail__lede {
  margin: 0;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--silver);
}

/* 章节目录 */
.page-about .rail-index {
  margin: 32px 0 24px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--about-rule);
}

.page-about .rail-index li {
  border-bottom: 1px solid var(--about-rule);
}

.page-about .rail-index a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 13px 4px;
  font-size: 14px;
  color: var(--silver);
  text-decoration: none;
  transition: color var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-about .rail-index a:hover,
.page-about .rail-index a:focus-visible {
  color: var(--mint-soft);
  transform: translateX(4px);
}

.page-about .rail-index .num {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mint);
}

/* 连续画布 */
.page-about .about-canvas {
  display: flex;
  flex-direction: column;
}

.page-about .block {
  padding: 44px 0;
  border-top: 1px solid var(--about-rule);
  scroll-margin-top: calc(var(--bar-h) + 24px);
}

.page-about .block:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .block--jade,
.page-about .block--wine {
  margin: 10px 0;
  padding: 30px 22px;
  border-top-color: transparent;
  border-radius: var(--r-lg);
}

.page-about .block--jade {
  background: var(--jade);
}

.page-about .block--wine {
  background: var(--wine);
}

.page-about .block p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-text);
}

.page-about .block p:last-child {
  margin-bottom: 0;
}

.page-about .sec-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 20px;
  margin-bottom: 20px;
}

.page-about .sec-head__title {
  margin: 0;
  max-width: 22em;
  font-size: clamp(21px, 3.4vw, 30px);
  line-height: 1.28;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-about .sec-head__note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--silver);
}

/* 赛事大类标签 */
.page-about .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .tag-row li {
  padding: 7px 15px;
  border-radius: var(--r-pill);
  font-size: 13px;
  color: var(--mint-soft);
  background: rgba(51, 245, 162, 0.08);
  border: 1px solid rgba(51, 245, 162, 0.24);
}

/* 图片 */
.page-about .about-figure {
  margin: 28px 0 0;
}

.page-about .about-figure img,
.page-about .team-figure img {
  display: block;
  width: 100%;
  object-fit: cover;
}

/* 时间线 */
.page-about .tl {
  position: relative;
  margin: 0;
  padding: 4px 0 0 4px;
  list-style: none;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 12px;
  bottom: 16px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--mint) 0%, rgba(51, 245, 162, 0.32) 55%, rgba(51, 245, 162, 0) 100%);
}

.page-about .tl__item {
  position: relative;
  padding: 0 0 30px 36px;
  transition: transform var(--t) var(--ease);
}

.page-about .tl__item:last-child {
  padding-bottom: 4px;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 5px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--jade);
  border: 2px solid var(--mint);
  box-shadow: 0 0 0 4px rgba(51, 245, 162, 0.1);
  transition: box-shadow var(--t) var(--ease);
}

.page-about .tl__item:hover {
  transform: translateX(4px);
}

.page-about .tl__item:hover::before {
  box-shadow: 0 0 0 7px rgba(51, 245, 162, 0.2);
}

.page-about .tl__year {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--mint);
  background: rgba(51, 245, 162, 0.08);
  border: 1px solid rgba(51, 245, 162, 0.26);
}

.page-about .tl__year--now {
  color: var(--amber);
  background: rgba(255, 194, 75, 0.1);
  border-color: rgba(255, 194, 75, 0.32);
}

.page-about .tl__stage {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--fog);
}

.page-about .tl__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-text-dim);
}

/* 团队 */
.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-about .stack {
  display: flex;
  gap: 3px;
  height: 14px;
  margin: 24px 0 18px;
  border-radius: var(--r-pill);
  overflow: hidden;
  background: rgba(143, 163, 184, 0.14);
}

.page-about .stack span {
  display: block;
  height: 100%;
  border-radius: var(--r-pill);
}

.page-about .stack span:nth-child(1) {
  flex: 32;
  background: var(--mint);
}

.page-about .stack span:nth-child(2) {
  flex: 21;
  background: var(--amber);
}

.page-about .stack span:nth-child(3) {
  flex: 25;
  background: var(--flare);
}

.page-about .legend {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .legend li {
  display: grid;
  grid-template-columns: 12px 1fr auto;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--about-text);
}

.page-about .legend__dot {
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 4px;
}

.page-about .legend__dot--mint {
  background: var(--mint);
}

.page-about .legend__dot--amber {
  background: var(--amber);
}

.page-about .legend__dot--flare {
  background: var(--flare);
}

.page-about .legend .num {
  font-size: 14px;
  color: var(--fog);
}

/* 处理链路 */
.page-about .tree {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .tree__step {
  padding: 20px 20px 22px;
  border-radius: var(--r-md);
  border-left: 2px solid rgba(51, 245, 162, 0.45);
  background: rgba(5, 11, 28, 0.55);
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-about .tree__step:hover {
  border-left-color: var(--mint);
  transform: translateY(-3px);
}

.page-about .tree__idx {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mint);
}

.page-about .tree__step h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--fog);
}

.page-about .tree__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-text-dim);
}

.page-about .tree-note {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px dashed rgba(51, 245, 162, 0.24);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-text-dim);
}

.page-about .tree-note .num {
  color: var(--mint);
  font-size: 16px;
}

/* 供应与协作 */
.page-about .sup-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 22px;
}

.page-about .sup-card {
  padding: 20px;
  border-radius: var(--r-md);
  background: var(--ink-2);
  transition: transform var(--t) var(--ease), background var(--t) var(--ease);
}

.page-about .sup-card:hover {
  transform: translateY(-3px);
  background: rgba(11, 21, 51, 0.92);
}

.page-about .sup-card h3 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--mint-soft);
}

.page-about .sup-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--about-text-dim);
}

/* 更新表 */
.page-about .cadence {
  margin: 0;
}

.page-about .cadence > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 5px;
  padding: 15px 0;
  border-bottom: 1px dashed rgba(232, 241, 245, 0.16);
}

.page-about .cadence > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .cadence dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-about .cadence dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-text);
}

/* 海湾纹理 */
.page-about .bay-figure {
  margin: 26px 0 0;
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-about .bay-figure img {
  display: block;
  width: 100%;
  opacity: 0.78;
}

/* 收尾入口 */
.page-about .about-cta {
  margin-top: 44px;
  padding: 32px 24px;
  border-radius: var(--r-lg);
  border: 1px solid rgba(51, 245, 162, 0.2);
  background: linear-gradient(135deg, rgba(51, 245, 162, 0.14) 0%, rgba(11, 21, 51, 0.92) 52%, rgba(255, 90, 43, 0.16) 100%);
}

.page-about .about-cta h2 {
  margin: 0 0 12px;
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--fog);
}

.page-about .about-cta p {
  margin: 0 0 22px;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-text);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 进入视口 */
.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.page-about [data-reveal].is-shown {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about .tl__item:hover,
  .page-about .tree__step:hover,
  .page-about .sup-card:hover,
  .page-about .rail-index a:hover {
    transform: none;
  }
}

/* 平板及以上 */
@media (min-width: 620px) {
  .page-about .sup-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .cadence > div {
    grid-template-columns: 150px 1fr;
    gap: 22px;
    align-items: baseline;
  }

  .page-about .block--jade,
  .page-about .block--wine {
    padding: 38px 34px;
  }
}

@media (min-width: 760px) {
  .page-about .tree {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .about-cta {
    padding: 40px 40px;
  }
}

@media (min-width: 860px) {
  .page-about .team-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 36px;
  }
}

/* 桌面左右分屏 */
@media (min-width: 980px) {
  .page-about .about-layout {
    grid-template-columns: 5fr 7fr;
    gap: 72px;
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
  }

  .page-about .about-rail h1 {
    font-size: clamp(38px, 3.9vw, 60px);
  }

  .page-about .block {
    padding: 52px 0;
  }
}
</style>
<<<END>>>