.page-about {
  --about-rail: 112px;
  --about-soft: rgba(245, 242, 234, 0.74);
  --about-body: clamp(14.5px, 1.2vw, 15.5px);
  position: relative;
  overflow-x: clip;
  background: var(--bg);
  color: var(--warm);
  font-family: var(--font-sans);
}

.page-about > * {
  position: relative;
  z-index: 1;
}

.page-about::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 760px;
  background-image:
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px),
    linear-gradient(var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(#000 0%, rgba(0, 0, 0, 0.35) 55%, transparent 100%);
  mask-image: linear-gradient(#000 0%, rgba(0, 0, 0, 0.35) 55%, transparent 100%);
  opacity: 0.6;
  pointer-events: none;
  z-index: 0;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding-top: clamp(20px, 4vw, 40px);
  padding-bottom: clamp(44px, 7vw, 84px);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -40px;
  right: -8%;
  width: min(560px, 62vw);
  height: 340px;
  background: linear-gradient(142deg, var(--lime-soft), rgba(198, 255, 61, 0) 72%);
  clip-path: polygon(0 14%, 100% 0, 100% 86%, 0 100%);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 52px);
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .about-hero__eyebrow {
  display: inline-block;
  margin: 0;
  padding: 6px 14px;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--lime);
  background: var(--panel-deep);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
}

.page-about .about-hero__title {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 6vw, 58px);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.012em;
  color: var(--warm);
  text-wrap: balance;
}

.page-about .about-hero__intro {
  margin: 22px 0 0;
  max-width: 36em;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.85;
  color: var(--about-soft);
}

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

.page-about .about-fact {
  padding: 20px 18px 22px;
  background: var(--panel);
}

.page-about .about-fact__num {
  display: block;
  font-size: clamp(21px, 2.8vw, 29px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--lime);
}

.page-about .about-fact__label {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 抽屉式章节 ---------- */

.page-about .about-ledger {
  padding-bottom: clamp(24px, 4vw, 48px);
}

.page-about .about-drawer {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: clamp(40px, 6vw, 60px) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-drawer:last-of-type {
  border-bottom: 1px solid var(--line);
}

.page-about .about-drawer__rule {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-drawer__no {
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--lime);
  text-decoration: none;
  transition: color var(--t) var(--ease), text-shadow var(--t) var(--ease);
}

.page-about .about-drawer__no:hover,
.page-about .about-drawer__no:focus-visible {
  color: var(--warm);
  text-shadow: 0 0 18px var(--lime-soft);
  outline: none;
}

.page-about .about-drawer__year {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-about .about-drawer__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.3vw, 36px);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--warm);
  text-wrap: balance;
}

.page-about .about-drawer__copy p {
  margin: 0 0 16px;
  max-width: 40em;
  font-size: var(--about-body);
  line-height: 1.88;
  color: var(--about-soft);
}

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

.page-about .about-drawer__copy a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(111, 227, 176, 0.35);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-about .about-drawer__copy a:hover,
.page-about .about-drawer__copy a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
  outline: none;
}

.page-about .about-drawer__copy--after {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px dashed var(--line);
}

.page-about .about-drawer__split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 38px);
  align-items: start;
}

/* ---------- 图片容器 ---------- */

.page-about .img-frame {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--panel);
}

.page-about .img-frame__media {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.78) contrast(1.04);
}

.page-about .img-frame--3x2 .img-frame__media { aspect-ratio: 3 / 2; }
.page-about .img-frame--5x6 .img-frame__media { aspect-ratio: 5 / 6; }
.page-about .img-frame--7x3 .img-frame__media { aspect-ratio: 7 / 3; }

.page-about .img-frame__cap {
  padding: 10px 15px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.65;
  letter-spacing: 0.02em;
  color: var(--mist);
}

/* ---------- 团队分层条 ---------- */

.page-about .about-team {
  list-style: none;
  margin: 26px 0 26px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--panel);
}

.page-about .about-team__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "label bar num"
    "desc desc desc";
  gap: 6px 14px;
  align-items: center;
  padding: 16px 18px 18px;
  transition: background var(--t) var(--ease);
}

.page-about .about-team__row + .about-team__row {
  border-top: 1px solid var(--line);
}

.page-about .about-team__row:hover {
  background: rgba(198, 255, 61, 0.05);
}

.page-about .about-team__label {
  grid-area: label;
  font-size: 14px;
  font-weight: 700;
  color: var(--warm);
  white-space: nowrap;
}

.page-about .about-team__bar {
  grid-area: bar;
  display: block;
  height: 8px;
  border-radius: var(--r-pill);
  background: rgba(30, 58, 50, 0.9);
  overflow: hidden;
  transition: box-shadow var(--t) var(--ease);
}

.page-about .about-team__row:hover .about-team__bar {
  box-shadow: inset 0 0 0 1px rgba(198, 255, 61, 0.35);
}

.page-about .about-team__fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  transition: transform var(--t-slow) var(--ease);
  transform-origin: left center;
}

.page-about .about-team__row[data-role="edit"] .about-team__fill {
  width: 61%;
  background: linear-gradient(90deg, var(--lime), rgba(198, 255, 61, 0.45));
}

.page-about .about-team__row[data-role="data"] .about-team__fill {
  width: 39%;
  background: linear-gradient(90deg, var(--mint), rgba(111, 227, 176, 0.35));
}

.page-about .about-team__row:hover .about-team__fill {
  transform: scaleX(1.045);
}

.page-about .about-team__num {
  grid-area: num;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--lime);
}

.page-about .about-team__row[data-role="data"] .about-team__num {
  color: var(--mint);
}

.page-about .about-team__desc {
  grid-area: desc;
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 四道工序 ---------- */

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

.page-about .about-flow__step {
  position: relative;
  padding: 22px 18px 24px;
  background: var(--panel);
  transition: background var(--t) var(--ease);
}

.page-about .about-flow__step:hover {
  background: rgba(198, 255, 61, 0.05);
}

.page-about .about-flow__no {
  display: block;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--lime);
}

.page-about .about-flow__title {
  margin: 12px 0 9px;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  color: var(--warm);
}

.page-about .about-flow__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 赛季节奏时间线 ---------- */

.page-about .about-season {
  list-style: none;
  margin: 28px 0 0;
  padding: 0 0 0 30px;
  border-left: 1px solid var(--line);
}

.page-about .about-season__item {
  position: relative;
  padding-bottom: 28px;
}

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

.page-about .about-season__dot {
  position: absolute;
  left: -35px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--mint);
  transition: background var(--t) var(--ease), border-color var(--t) var(--ease), box-shadow var(--t) var(--ease);
}

.page-about .about-season__item:hover .about-season__dot {
  background: var(--lime);
  border-color: var(--lime);
  box-shadow: 0 0 0 5px var(--lime-soft);
}

.page-about .about-season__phase {
  display: inline-block;
  padding: 3px 10px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--lime);
  background: var(--panel-deep);
  border: 1px solid var(--line);
  border-radius: var(--r-tag);
}

.page-about .about-season__title {
  margin: 12px 0 8px;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--warm);
}

.page-about .about-season__text {
  margin: 0;
  max-width: 38em;
  font-size: 14px;
  line-height: 1.82;
  color: var(--mist);
}

/* ---------- 里程碑 ---------- */

.page-about .about-miles__banner {
  margin: 4px 0 28px;
}

.page-about .about-miles__track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .about-miles__item {
  padding: 20px 18px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  transition: transform var(--t) var(--ease), border-color var(--t) var(--ease), background var(--t) var(--ease);
}

.page-about .about-miles__item:hover {
  transform: translateY(-2px);
  border-color: rgba(198, 255, 61, 0.42);
  background: #16332b;
}

.page-about .about-miles__year {
  margin: 0 0 10px;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--lime);
}

.page-about .about-miles__title {
  margin: 0 0 10px;
  font-family: var(--font-sans);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--warm);
}

.page-about .about-miles__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.76;
  color: var(--about-soft);
}

.page-about .about-miles__extra {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--mist);
  transition: color var(--t) var(--ease);
}

.page-about .about-miles__item:hover .about-miles__extra {
  color: var(--mint);
}

/* ---------- 合作四象限 ---------- */

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

.page-about .about-partner {
  padding: clamp(20px, 3vw, 28px) clamp(18px, 2.6vw, 26px);
  background: var(--panel);
  outline-offset: -3px;
  transition: background var(--t) var(--ease);
}

.page-about .about-partner:hover {
  background: rgba(198, 255, 61, 0.06);
}

.page-about .about-partner:focus-visible {
  outline: 2px solid var(--lime);
  background: rgba(198, 255, 61, 0.08);
}

.page-about .about-partner__kicker {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mint);
}

.page-about .about-partner__title {
  margin: 0 0 10px;
  font-family: var(--font-sans);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--warm);
}

.page-about .about-partner__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 收尾入口 ---------- */

.page-about .about-cta {
  margin-bottom: clamp(48px, 8vw, 88px);
  padding: clamp(26px, 4vw, 40px);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(198, 255, 61, 0.09), transparent 62%),
    var(--panel);
}

.page-about .about-cta__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 700;
  color: var(--warm);
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-about .about-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.9fr);
    align-items: end;
  }

  .page-about .about-hero__facts {
    margin-bottom: 6px;
  }

  .page-about .about-drawer {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 0;
    padding: clamp(52px, 7vw, 92px) 0;
  }

  .page-about .about-drawer__rule {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding-right: clamp(18px, 2vw, 28px);
  }

  .page-about .about-drawer__body {
    border-left: 1px solid var(--line);
    padding-left: clamp(26px, 3.4vw, 52px);
  }

  .page-about .about-drawer__split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .about-drawer__split--reverse {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    margin-top: 4px;
  }

  .page-about .about-miles__track {
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: 14px;
    scroll-snap-type: x proximity;
    scrollbar-width: thin;
    scrollbar-color: var(--line) transparent;
  }

  .page-about .about-miles__track::-webkit-scrollbar {
    height: 6px;
  }

  .page-about .about-miles__track::-webkit-scrollbar-track {
    background: transparent;
  }

  .page-about .about-miles__track::-webkit-scrollbar-thumb {
    background: var(--line);
    border-radius: var(--r-pill);
  }

  .page-about .about-miles__item {
    flex: 0 0 292px;
    scroll-snap-align: start;
  }
}

@media (min-width: 1120px) {
  .page-about .about-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-season {
    padding-left: 34px;
  }
}

@media (min-width: 1280px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: 0.01ms !important;
  }
}
<<<END>>>