.page-about {
  --about-radius: 2px;
  overflow-x: clip;
  background: var(--green-black);
  color: var(--signal-white);
  font-family: var(--font-body);
}

.page-about .about-top {
  padding-top: clamp(18px, 3vw, 32px);
  padding-bottom: 6px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink-pitch);
  border-bottom: 1px solid var(--line);
  padding: clamp(36px, 7vw, 78px) 0 clamp(32px, 5.5vw, 60px);
}

.page-about .about-hero__slash {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(116deg, transparent 0 58%, rgba(61, 245, 208, 0.1) 58% 74%, transparent 74%),
    linear-gradient(116deg, transparent 0 77%, rgba(255, 106, 43, 0.16) 77% 100%);
}

.page-about .about-hero__kicker {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: var(--neon-cyan);
}

.page-about .about-hero__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: clamp(30px, 6.6vw, 76px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--signal-white);
}

.page-about .about-hero__title span {
  color: var(--neon-cyan);
}

.page-about .about-hero__lead {
  max-width: 58ch;
  margin: 0 0 30px;
  font-size: clamp(15px, 0.45vw + 13.6px, 17.5px);
  line-height: 1.85;
  color: rgba(246, 247, 242, 0.82);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
}

.page-about .about-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-left: 12px;
  border-left: 2px solid var(--track-orange);
}

.page-about .about-hero__stats strong {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--signal-white);
}

.page-about .about-hero__stats span {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--steel-mist);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-sec {
  padding: clamp(40px, 7.5vw, 88px) 0;
}

.page-about .about-sec--alt {
  background: var(--ink-pitch);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin {
  display: grid;
  gap: 26px;
}

.page-about .about-origin__text p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(246, 247, 242, 0.82);
}

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

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

.page-about .about-note {
  background: var(--cream-paper);
  color: var(--brown-black);
  border: 1px solid rgba(42, 29, 22, 0.16);
  border-radius: var(--about-radius);
  padding: 18px 20px 20px;
  transform: rotate(-2deg);
  box-shadow: 0 18px 34px -22px rgba(6, 23, 19, 0.8);
  transition: transform 200ms var(--ease), box-shadow 200ms var(--ease);
}

.page-about .about-note:hover,
.page-about .about-note:focus,
.page-about .about-note:focus-within {
  transform: rotate(0deg);
  box-shadow: 0 22px 42px -20px rgba(6, 23, 19, 0.85);
}

.page-about .about-note:focus {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 3px;
}

.page-about .about-note__kicker {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--cyan-dim);
}

.page-about .about-note__value {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(38px, 6vw, 56px);
  font-weight: 700;
  line-height: 0.9;
  color: var(--brown-black);
}

.page-about .about-note__label {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.55;
  color: rgba(42, 29, 22, 0.78);
}

.page-about .about-note__more {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(42, 29, 22, 0.82);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 200ms var(--ease), opacity 200ms var(--ease);
}

@media (hover: hover) and (pointer: fine) {
  .page-about .about-note:hover .about-note__more,
  .page-about .about-note:focus .about-note__more,
  .page-about .about-note:focus-within .about-note__more {
    max-height: 8em;
    opacity: 1;
  }
}

@media (hover: none) {
  .page-about .about-note__more {
    max-height: none;
    opacity: 1;
  }
}

/* ---------- 版本里程碑 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 58px;
  position: relative;
  display: grid;
  gap: 14px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 16px;
  bottom: 16px;
  border-left: 1px dashed rgba(143, 167, 158, 0.42);
}

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

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -41px;
  top: 26px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--neon-cyan);
  box-shadow: 0 0 0 4px rgba(61, 245, 208, 0.15);
}

.page-about .about-node::after {
  content: "";
  position: absolute;
  left: -29px;
  top: 31px;
  width: 20px;
  height: 1px;
  background: linear-gradient(90deg, rgba(61, 245, 208, 0.7), rgba(61, 245, 208, 0));
}

.page-about .about-node details {
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  background: rgba(11, 43, 36, 0.55);
  transition: border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-about .about-node details[open] {
  border-color: rgba(61, 245, 208, 0.45);
  background: rgba(11, 43, 36, 0.92);
}

.page-about .about-node summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-node summary:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: -2px;
}

.page-about .about-node__year {
  flex: none;
  font-family: var(--font-mono);
  font-size: clamp(19px, 3.2vw, 28px);
  letter-spacing: 0.04em;
  line-height: 1;
  color: var(--track-orange);
}

.page-about .about-node__label {
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--signal-white);
}

.page-about .about-node summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--steel-mist);
}

.page-about .about-node details[open] summary::after {
  content: "\2212";
  color: var(--neon-cyan);
}

.page-about .about-node__body {
  padding: 14px 18px 18px;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-node__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(246, 247, 242, 0.78);
}

/* ---------- 团队分工 ---------- */
.page-about .about-team {
  display: grid;
  gap: 26px;
}

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

.page-about .about-team__cards {
  display: grid;
  gap: 14px;
}

.page-about .about-role {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 20px 22px;
  background: rgba(246, 247, 242, 0.045);
  border: 1px solid var(--line);
  border-top: 2px solid var(--neon-cyan);
  border-radius: var(--about-radius);
}

.page-about .about-role__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-about .about-role__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--signal-white);
}

.page-about .about-role__body {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(246, 247, 242, 0.76);
}

/* ---------- 覆盖与规模 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  overflow: hidden;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 18px 16px 20px;
  background: var(--green-black);
}

.page-about .about-stat__num {
  font-family: var(--font-display);
  font-size: clamp(26px, 4.2vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--neon-cyan);
}

.page-about .about-stat__label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--signal-white);
}

.page-about .about-stat__note {
  font-size: 12px;
  line-height: 1.65;
  color: rgba(143, 167, 158, 0.92);
}

.page-about .about-fav {
  margin: 22px 0 0;
  padding: 15px 18px;
  border-left: 3px solid var(--track-orange);
  background: rgba(255, 106, 43, 0.07);
  font-size: 14px;
  line-height: 1.85;
  color: rgba(246, 247, 242, 0.84);
}

/* ---------- 赛程更新流程 ---------- */
.page-about .about-flow {
  display: grid;
  gap: 26px;
}

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

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-steps__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-steps__item:last-child {
  border-bottom: 0;
}

.page-about .about-steps__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--track-orange);
  padding-top: 3px;
}

.page-about .about-steps__title {
  margin: 0 0 5px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--signal-white);
}

.page-about .about-steps__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(246, 247, 242, 0.76);
}

.page-about .about-flow__link {
  margin: 26px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(246, 247, 242, 0.72);
}

.page-about .about-flow__link a {
  color: var(--neon-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 245, 208, 0.45);
}

.page-about .about-flow__link a:hover {
  color: var(--signal-white);
  border-bottom-color: var(--track-orange);
}

/* ---------- 服务原则 ---------- */
.page-about .about-principles {
  display: grid;
  gap: 12px;
}

.page-about .about-principle {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  column-gap: 14px;
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  background: rgba(6, 23, 19, 0.5);
}

.page-about .about-principle__num {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.3;
  color: var(--neon-cyan);
  letter-spacing: 0.08em;
}

.page-about .about-principle__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--signal-white);
}

.page-about .about-principle p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(246, 247, 242, 0.76);
}

/* ---------- 加入与联系 ---------- */
.page-about .about-cta {
  background: var(--ink-pitch);
  border-top: 1px solid var(--line);
  padding: clamp(38px, 6.5vw, 74px) 0;
}

.page-about .about-cta__inner {
  display: grid;
  gap: 24px;
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.6vw, 44px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--signal-white);
}

.page-about .about-cta__lead {
  max-width: 58ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(246, 247, 242, 0.78);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-principles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 34px;
  }

  .page-about .about-cta__actions {
    flex-wrap: nowrap;
  }
}

@media (min-width: 900px) {
  .page-about .about-origin {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    column-gap: 46px;
    row-gap: 0;
    align-items: start;
  }

  .page-about .about-origin__text {
    grid-column: 1;
    grid-row: 1;
  }

  .page-about .about-origin__figure {
    grid-column: 2;
    grid-row: 1 / span 2;
  }

  .page-about .about-origin__note {
    grid-column: 1;
    grid-row: 2;
    max-width: 300px;
    margin-top: 26px;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    align-items: start;
    column-gap: 32px;
  }

  .page-about .about-flow {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: start;
    column-gap: 42px;
  }
}

@media (min-width: 1040px) {
  .page-about .about-team__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-note,
  .page-about .about-note__more,
  .page-about .about-node details {
    transition: none;
  }
}
<<<END>>>