.page-about {
  --about-bleed: 22px;
  --about-rail-w: 232px;
  background: var(--wa-paper);
  color: var(--wa-text);
  font-family: var(--wa-font-body);
  line-height: 1.75;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

@media (min-width: 1024px) {
  .page-about {
    --about-bleed: 28px;
  }
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: 104px 0 56px;
  background:
    radial-gradient(80% 120% at 84% -14%, rgba(61, 245, 200, .22), transparent 62%),
    linear-gradient(170deg, #07100C 0%, #0B3D2E 64%, #0B3D2E 100%);
  color: var(--wa-paper);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(61, 245, 200, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 245, 200, .07) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 78%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 78%);
}

.page-about .about-hero .wa-crumb__link,
.page-about .about-hero .wa-crumb__item,
.page-about .about-hero .wa-crumb__sep {
  color: rgba(244, 238, 226, .58);
}

.page-about .about-hero .wa-crumb__link {
  text-decoration: none;
}

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

.page-about .about-hero__kicker {
  margin: 22px 0 0;
  color: var(--wa-cyan);
  letter-spacing: .16em;
}

.page-about .about-hero__title {
  margin: 16px 0 22px;
  max-width: 19ch;
  font-family: var(--wa-font-display);
  font-size: clamp(31px, 6.4vw, 56px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.012em;
  color: var(--wa-paper);
  transform: skewX(-4deg);
  transform-origin: left bottom;
}

.page-about .about-hero__lead {
  margin: 0 0 34px;
  max-width: 62ch;
  color: rgba(244, 238, 226, .84);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 1px;
  max-width: 600px;
  list-style: none;
  background: rgba(61, 245, 200, .18);
  border-radius: 2px;
}

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

.page-about .about-hero__facts li {
  padding: 14px 16px;
  background: rgba(7, 16, 12, .74);
  font-size: 13px;
  line-height: 1.4;
  color: rgba(244, 238, 226, .62);
}

.page-about .about-hero__facts strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--wa-font-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--wa-cyan);
}

/* ---------- 双栏骨架 ---------- */

.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding-top: 8px;
  padding-bottom: 0;
}

@media (min-width: 1024px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    column-gap: 56px;
    padding-top: 24px;
  }
}

/* ---------- 阶段坐标索引 ---------- */

.page-about .about-rail {
  padding: 28px 0 6px;
}

@media (min-width: 1024px) {
  .page-about .about-rail {
    position: sticky;
    top: 104px;
    align-self: start;
    padding: 56px 0 40px;
  }
}

.page-about .about-rail__eyebrow {
  margin: 0 0 12px;
  font-family: var(--wa-font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--wa-mid);
}

.page-about .about-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 12px;
  list-style: none;
  overflow-x: auto;
  border-bottom: 1px solid var(--wa-line);
  scrollbar-width: none;
}

.page-about .about-rail__list::-webkit-scrollbar {
  display: none;
}

@media (min-width: 1024px) {
  .page-about .about-rail__list {
    flex-direction: column;
    gap: 0;
    padding: 0;
    overflow: visible;
    border-bottom: 0;
    border-left: 1px solid var(--wa-line);
  }
}

.page-about .about-rail__link {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 9px 14px;
  border-radius: var(--wa-radius);
  color: var(--wa-text-soft);
  text-decoration: none;
  white-space: nowrap;
  transition: color .16s ease, background-color .16s ease, border-color .16s ease;
}

.page-about .about-rail__link:hover {
  color: var(--wa-ink);
  background: var(--wa-mint);
}

.page-about .about-rail__link[aria-current="true"],
.page-about .about-rail__link[aria-current="page"] {
  color: var(--wa-ink);
  background: var(--wa-mint);
}

@media (min-width: 1024px) {
  .page-about .about-rail__link {
    margin-left: -1px;
    padding: 10px 16px;
    border-left: 2px solid transparent;
    border-radius: 0;
  }

  .page-about .about-rail__link[aria-current="true"],
  .page-about .about-rail__link[aria-current="page"] {
    border-left-color: var(--wa-cyan);
  }
}

.page-about .about-rail__year {
  font-family: var(--wa-font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--wa-mid);
}

.page-about .about-rail__label {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.35;
}

.page-about .about-rail__link[aria-current="true"] .about-rail__year,
.page-about .about-rail__link[aria-current="page"] .about-rail__year {
  color: var(--wa-ink);
}

/* ---------- 章节 ---------- */

.page-about .about-body {
  min-width: 0;
  padding-bottom: 12px;
}

.page-about .about-sec {
  position: relative;
  padding: 52px 0 48px;
  scroll-margin-top: 110px;
}

@media (min-width: 1024px) {
  .page-about .about-sec {
    padding: 76px 0 68px;
  }
}

.page-about .about-sec--dark {
  margin-inline: calc(var(--about-bleed) * -1);
  padding-inline: var(--about-bleed);
  background: var(--wa-carbon);
  color: var(--wa-paper);
  border-radius: 2px;
  box-shadow: var(--wa-shadow);
}

.page-about .about-sec__num {
  margin: 0 0 12px;
  font-family: var(--wa-font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--wa-mid);
}

.page-about .about-sec--dark .about-sec__num {
  color: var(--wa-cyan);
  opacity: .85;
}

.page-about .about-h2 {
  margin: 0 0 20px;
  max-width: 26ch;
  font-family: var(--wa-font-display);
  font-size: clamp(23px, 3.4vw, 34px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--wa-ink);
}

.page-about .about-sec--dark .about-h2 {
  color: var(--wa-paper);
}

.page-about .about-sec > p {
  margin: 0 0 16px;
  max-width: 64ch;
  color: var(--wa-text-soft);
}

.page-about .about-sec--dark > p {
  color: rgba(244, 238, 226, .76);
}

.page-about .about-sec a {
  color: var(--wa-mid);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-sec--dark a {
  color: var(--wa-cyan);
}

/* ---------- 品牌起点三条 ---------- */

.page-about .about-points {
  display: grid;
  gap: 0;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--wa-line);
}

.page-about .about-points__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  column-gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--wa-line);
}

.page-about .about-points__idx {
  width: 26px;
  height: 26px;
  border-radius: 2px;
  background: var(--wa-ink);
  color: var(--wa-cyan);
  font-family: var(--wa-font-mono);
  font-size: 12px;
  line-height: 26px;
  text-align: center;
}

.page-about .about-points__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--wa-ink);
}

.page-about .about-points__item p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  color: var(--wa-text-soft);
}

/* ---------- 图像 ---------- */

.page-about .about-figure {
  margin: 30px 0 26px;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
  object-fit: cover;
}

.page-about .about-sec--dark .about-figure img {
  box-shadow: 0 0 0 1px rgba(61, 245, 200, .18);
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-family: var(--wa-font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--wa-text-soft);
}

.page-about .about-sec--dark .about-figure figcaption {
  color: rgba(244, 238, 226, .6);
}

/* ---------- 赛前赛中赛后 ---------- */

.page-about .about-phases {
  margin-top: 30px;
  border-top: 1px solid rgba(244, 238, 226, .16);
}

.page-about .about-phase {
  display: grid;
  gap: 4px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(244, 238, 226, .16);
}

@media (min-width: 720px) {
  .page-about .about-phase {
    grid-template-columns: 168px minmax(0, 1fr);
    column-gap: 28px;
    align-items: start;
  }
}

.page-about .about-phase__when {
  font-family: var(--wa-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--wa-cyan);
}

.page-about .about-phase--pre .about-phase__when {
  color: var(--wa-amber);
}

.page-about .about-phase--post .about-phase__when {
  color: var(--wa-yellow);
}

.page-about .about-phase__title {
  margin: 0 0 6px;
  font-family: var(--wa-font-display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -.005em;
  color: var(--wa-paper);
}

.page-about .about-phase p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  color: rgba(244, 238, 226, .72);
}

/* ---------- 归档事实行 ---------- */

.page-about .about-facts {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--wa-line);
}

.page-about .about-facts__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 14px 0;
  border-bottom: 1px solid var(--wa-line);
}

.page-about .about-facts__k {
  font-size: 14px;
  color: var(--wa-text-soft);
}

.page-about .about-facts__v {
  font-family: var(--wa-font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--wa-ink);
}

/* ---------- 团队分工 ---------- */

.page-about .about-team {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-team__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(244, 238, 226, .14);
  transition: transform .18s ease, background-color .18s ease;
}

@media (min-width: 768px) {
  .page-about .about-team__row {
    grid-template-columns: 56px minmax(0, 1fr) 132px;
    column-gap: 24px;
    align-items: start;
  }
}

.page-about .about-team__row:hover {
  transform: translateY(-2px);
  background: rgba(61, 245, 200, .05);
}

.page-about .about-team__idx {
  padding-top: 3px;
  font-family: var(--wa-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--wa-cyan);
}

.page-about .about-team__name {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--wa-paper);
}

.page-about .about-team__row p {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  color: rgba(244, 238, 226, .74);
}

.page-about .about-team__tag {
  justify-self: start;
  padding: 4px 9px;
  border: 1px dashed rgba(61, 245, 200, .45);
  border-radius: 2px;
  font-family: var(--wa-font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  white-space: nowrap;
  color: var(--wa-cyan);
}

@media (min-width: 768px) {
  .page-about .about-team__tag {
    justify-self: end;
  }
}

/* ---------- 覆盖数字 ---------- */

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 28px 0 0;
  background: var(--wa-line);
  border: 1px solid var(--wa-line);
  border-radius: 2px;
  overflow: hidden;
}

@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-stats__cell {
  padding: 18px 16px;
  background: var(--wa-paper);
}

.page-about .about-stats__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--wa-font-mono);
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--wa-ink);
}

.page-about .about-stats__label {
  display: block;
  font-size: 13px;
  line-height: 1.5;
  color: var(--wa-text-soft);
}

/* ---------- 里程碑 ---------- */

.page-about .about-figure--bleed {
  margin-top: 4px;
}

.page-about .about-chart {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 640 / 110;
  margin: 26px 0 30px;
}

.page-about .about-chart__line {
  fill: none;
  stroke: var(--wa-cyan);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.page-about .about-chart__dot {
  fill: var(--wa-carbon);
  stroke: var(--wa-cyan);
  stroke-width: 2;
}

.page-about .about-tl {
  position: relative;
  display: grid;
  gap: 26px;
  margin: 0;
  padding: 0 0 0 28px;
  list-style: none;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--wa-cyan), rgba(61, 245, 200, .16) 70%, transparent);
}

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

.page-about .about-tl__node {
  position: absolute;
  left: -28px;
  top: 7px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--wa-carbon);
  box-shadow: 0 0 0 2px currentColor;
  color: var(--wa-cyan);
}

.page-about .about-tl__node--launch {
  color: var(--wa-cyan);
}

.page-about .about-tl__node--upgrade {
  color: var(--wa-yellow);
}

.page-about .about-tl__node--expand {
  color: var(--wa-mid);
}

.page-about .about-tl__year {
  display: block;
  margin-bottom: 4px;
  font-family: var(--wa-font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--wa-cyan);
}

.page-about .about-tl__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--wa-paper);
}

.page-about .about-tl__item p {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  color: rgba(244, 238, 226, .72);
}

/* ---------- 四端 ---------- */

.page-about .about-ends {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  background: var(--wa-line);
  border: 1px solid var(--wa-line);
  border-radius: 2px;
  overflow: hidden;
}

@media (min-width: 560px) {
  .page-about .about-ends {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-about .about-ends {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-ends__item {
  padding: 20px 18px;
  background: var(--wa-paper);
}

.page-about .about-ends__tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 9px;
  border-radius: 2px;
  background: var(--wa-mint);
  color: var(--wa-ink);
  font-family: var(--wa-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-about .about-ends__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--wa-text-soft);
}

/* ---------- 尾部 ---------- */

.page-about .about-cta {
  position: relative;
  margin-top: 20px;
  padding: 60px 0 72px;
  overflow: hidden;
  background: linear-gradient(165deg, var(--wa-ink) 0%, var(--wa-carbon) 100%);
  color: var(--wa-paper);
}

.page-about .about-cta::after {
  content: "";
  position: absolute;
  right: -140px;
  top: -120px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 138, 61, .22), transparent 68%);
  pointer-events: none;
}

.page-about .about-cta__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 26px;
}

@media (min-width: 900px) {
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    column-gap: 48px;
  }
}

.page-about .about-cta__kicker {
  margin: 0 0 10px;
  font-family: var(--wa-font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--wa-amber);
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  max-width: 20ch;
  font-family: var(--wa-font-display);
  font-size: clamp(24px, 3.6vw, 36px);
  font-weight: 800;
  line-height: 1.16;
  color: var(--wa-paper);
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  color: rgba(244, 238, 226, .74);
}

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

/* ---------- 窄屏与动效 ---------- */

@media (max-width: 640px) {
  .page-about .about-hero {
    padding: 88px 0 46px;
  }

  .page-about .about-hero__title {
    max-width: none;
  }

  .page-about .about-h2 {
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__row {
    transition: none;
  }

  .page-about .about-team__row:hover {
    transform: none;
  }

  .page-about .about-hero__title {
    transform: none;
  }
}