.page-about {
  background: var(--ink);
  color: var(--line);
  font-family: var(--font-display);
}

.page-about .about-crumb {
  padding-top: clamp(14px, 2.4vw, 22px);
  padding-bottom: clamp(8px, 1.6vw, 14px);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--moss);
}

.page-about .about-crumb a {
  color: var(--moss);
  text-decoration: none;
  border-bottom: 1px dashed rgba(111, 133, 121, .6);
}

.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-about .about-crumb [aria-current="page"] {
  color: var(--line);
  font-weight: 600;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(24px, 5vw, 56px) clamp(20px, 4vw, 40px);
  background:
    linear-gradient(155deg, var(--grass) 0%, var(--ink) 58%),
    var(--ink);
  border-bottom: var(--frame) solid var(--grass-mid);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: min(38vw, 420px);
  height: clamp(90px, 14vw, 170px);
  background: var(--paper);
  clip-path: polygon(22% 0, 100% 0, 100% 100%, 0 100%);
  opacity: .96;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--gap);
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: center;
    gap: calc(var(--gap) * 1.4);
  }
}

.page-about .about-hero__copy h1 {
  margin: 14px 0 0;
  font-size: clamp(2.1rem, 7.2vw, 4.6rem);
  line-height: 1.04;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--line);
  max-width: 16em;
}

.page-about .about-hero__lead {
  margin: 20px 0 0;
  max-width: 38em;
  font-size: clamp(1rem, 2.1vw, 1.125rem);
  line-height: 1.78;
  color: rgba(220, 231, 225, .86);
}

.page-about .about-hero__actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__media {
  margin: 0;
  border: var(--frame) solid var(--grass-mid);
  box-shadow: var(--shadow-hard-lg);
  background: var(--grass-mid);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.62) hue-rotate(-8deg) brightness(.86);
}

.page-about .about-hero__stats {
  position: relative;
  z-index: 1;
  margin: clamp(28px, 5vw, 46px) auto 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--grass-mid);
  border: var(--frame) solid var(--grass-mid);
}

@media (min-width: 760px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-hero__stats li {
  background: var(--ink);
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-hero__stats b {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
  white-space: nowrap;
}

.page-about .about-hero__stats span {
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--moss);
}

/* ---------- 章节索引 ---------- */
.page-about .about-index {
  position: sticky;
  top: var(--header-h);
  z-index: 6;
  background: rgba(8, 17, 15, .94);
  border-bottom: 1px dashed rgba(111, 133, 121, .5);
  backdrop-filter: blur(6px);
}

.page-about .about-index__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-block: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .about-index__label {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--red);
  padding-right: 12px;
  border-right: 1px solid var(--grass-mid);
}

.page-about .about-index ul {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-index a {
  display: inline-block;
  white-space: nowrap;
  padding: 5px 12px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--line);
  text-decoration: none;
  border: var(--frame) solid transparent;
  background: var(--grass-mid);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%);
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  background: var(--amber);
  color: var(--paper-ink);
}

/* ---------- 通用章节 ---------- */
.page-about .about-sec {
  padding-block: clamp(46px, 8vw, 96px);
  border-bottom: 1px dashed rgba(111, 133, 121, .32);
}

.page-about .about-sec__head {
  max-width: 46em;
  margin-bottom: clamp(24px, 4.4vw, 44px);
}

.page-about .about-sec__head h2 {
  margin: 12px 0 0;
  font-size: clamp(1.55rem, 4.4vw, 2.7rem);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--line);
}

.page-about .about-sec__lead {
  margin: 16px 0 0;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(220, 231, 225, .78);
}

/* ---------- 起步章节 ---------- */
.page-about .about-sec--start {
  background: var(--grass);
}

.page-about .about-start {
  display: grid;
  gap: clamp(20px, 3.6vw, 40px);
}

@media (min-width: 940px) {
  .page-about .about-start {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

.page-about .about-start__note {
  border-left: 3px solid var(--amber);
  padding-left: 18px;
}

.page-about .about-start__note h2 {
  margin: 12px 0 0;
  font-size: clamp(1.5rem, 4vw, 2.3rem);
  line-height: 1.18;
  font-weight: 800;
  color: var(--line);
}

.page-about .about-start__body p {
  margin: 0 0 18px;
  font-size: 1.0625rem;
  line-height: 1.82;
  color: rgba(220, 231, 225, .88);
  max-width: 38em;
}

.page-about .about-start__list {
  margin: 26px 0 0;
  padding: 18px 0 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  border-top: 1px dashed rgba(111, 133, 121, .55);
}

.page-about .about-start__list li {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-start__list b {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--cyan);
  white-space: nowrap;
}

.page-about .about-start__list span {
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--moss);
}

/* ---------- 赛季刻度 ---------- */
.page-about .about-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(24px, 4vw, 38px);
}

.page-about .filter-btn {
  appearance: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  letter-spacing: .05em;
  padding: 8px 15px;
  color: var(--line);
  background: var(--grass-mid);
  border: var(--frame) solid var(--grass-mid);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

.page-about .filter-btn[aria-pressed="true"] {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--paper-ink);
  font-weight: 700;
}

.page-about .filter-btn:hover {
  border-color: var(--amber);
}

.page-about .filter-count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--moss);
  margin-left: 4px;
}

.page-about .about-rail {
  position: relative;
  padding-left: 38px;
}

.page-about .about-rail::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 10px;
  bottom: 10px;
  width: 0;
  border-left: 1.5px dashed var(--grass-mid);
}

.page-about .about-rail__item {
  position: relative;
  padding: 18px 0 22px;
  border-bottom: 1px solid var(--grass-mid);
}

.page-about .about-rail__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--grass);
  border: 2px solid var(--amber);
  box-shadow: 0 0 0 4px var(--ink);
}

.page-about .about-rail__item[hidden] {
  display: none;
}

.page-about .about-rail__idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--amber);
  padding: 3px 9px;
  border: 1px solid rgba(242, 179, 61, .45);
  margin-bottom: 10px;
}

.page-about .about-rail__item h3 {
  margin: 0 0 8px;
  font-size: clamp(1.12rem, 2.5vw, 1.4rem);
  line-height: 1.34;
  font-weight: 700;
  color: var(--line);
}

.page-about .about-rail__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: rgba(220, 231, 225, .78);
  max-width: 42em;
}

.page-about .about-rail__drawer {
  margin-top: 10px;
  padding-left: 12px;
  border-left: 2px solid var(--cyan);
  font-family: var(--font-mono);
  font-size: 13px !important;
  letter-spacing: .01em;
  color: var(--cyan) !important;
  transition: border-color .2s ease, color .2s ease;
}

.page-about .about-rail__item:hover .about-rail__drawer,
.page-about .about-rail__item:focus-within .about-rail__drawer {
  border-left-color: var(--amber);
  color: var(--amber) !important;
}

@media (min-width: 860px) {
  .page-about .about-rail {
    padding-left: 58px;
  }
  .page-about .about-rail::before {
    left: 27px;
  }
  .page-about .about-rail__item::before {
    left: -39px;
    width: 14px;
    height: 14px;
    top: 26px;
  }
  .page-about .about-rail__item {
    padding: 22px 0 26px;
  }
}

/* ---------- 数据流转 ---------- */
.page-about .about-sec--flow {
  background: var(--grass);
}

.page-about .about-flow__layout {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

@media (min-width: 980px) {
  .page-about .about-flow__layout {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }
}

.page-about .about-flow__media {
  margin: 0;
  border: var(--frame) solid var(--grass-mid);
  box-shadow: var(--shadow-hard);
  background: var(--grass-mid);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.page-about .about-flow__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.6) hue-rotate(-8deg) brightness(.88);
}

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

@media (min-width: 660px) {
  .page-about .about-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--gap);
  }
}

.page-about .about-flow__step {
  position: relative;
  padding: 20px 0 24px;
  border-top: 1.5px solid var(--grass-mid);
}

.page-about .about-flow__step::after {
  content: "";
  position: absolute;
  right: 0;
  top: -4px;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-about .about-flow__idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--cyan);
  margin-bottom: 8px;
}

.page-about .about-flow__step h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  line-height: 1.36;
  font-weight: 700;
  color: var(--line);
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: rgba(220, 231, 225, .78);
}

/* ---------- 团队分工 ---------- */
.page-about .about-team__layout {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

@media (min-width: 1000px) {
  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

.page-about .about-team__media {
  margin: 0;
  border: var(--frame) solid var(--grass-mid);
  box-shadow: var(--shadow-hard);
  background: var(--grass-mid);
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.6) hue-rotate(-8deg) brightness(.86);
}

.page-about .about-team__cards {
  display: grid;
  gap: var(--gap);
}

@media (min-width: 620px) {
  .page-about .about-team__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

.page-about .about-team__card {
  padding: 20px 18px 22px;
  background: var(--grass);
  border: var(--frame) solid var(--grass-mid);
  box-shadow: var(--shadow-hard);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .about-team__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  line-height: 1;
  font-weight: 700;
  color: var(--amber);
  white-space: nowrap;
}

.page-about .about-team__card h3 {
  margin: 12px 0 8px;
  font-size: 1.06rem;
  font-weight: 700;
  line-height: 1.36;
  color: var(--line);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(220, 231, 225, .76);
}

/* ---------- 合作生态 ---------- */
.page-about .about-sec--partners {
  background: var(--paper);
  color: var(--paper-ink);
}

.page-about .about-partners__head h2,
.page-about .about-sec--partners h2 {
  margin: 12px 0 0;
  font-size: clamp(1.55rem, 4.4vw, 2.7rem);
  line-height: 1.16;
  font-weight: 800;
  color: var(--paper-ink);
}

.page-about .about-partners__head {
  max-width: 40em;
  margin-bottom: clamp(24px, 4.4vw, 44px);
}

.page-about .about-partners__head .eyebrow {
  color: var(--red);
}

.page-about .about-partners__grid {
  display: grid;
  gap: var(--gap);
}

@media (min-width: 900px) {
  .page-about .about-partners__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }
}

.page-about .about-partners__item {
  padding: 22px 20px 24px;
  background: #fff8ea;
  border: 2px solid var(--paper-ink);
  box-shadow: 6px 6px 0 rgba(16, 22, 15, .82);
}

.page-about .about-partners__item b {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2rem, 5.4vw, 2.9rem);
  line-height: 1;
  color: var(--paper-ink);
  white-space: nowrap;
}

.page-about .about-partners__item h3 {
  margin: 10px 0 10px;
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.34;
  color: var(--paper-ink);
}

.page-about .about-partners__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: rgba(16, 22, 15, .82);
}

.page-about .about-partners__item--note {
  background: var(--grass);
  border-color: var(--grass);
  box-shadow: 6px 6px 0 rgba(16, 22, 15, .82);
}

.page-about .about-partners__item--note b,
.page-about .about-partners__item--note h3 {
  color: var(--amber);
}

.page-about .about-partners__item--note p {
  color: rgba(220, 231, 225, .84);
}

.page-about .about-partners__item--note .btn {
  margin-top: 16px;
}

/* ---------- 年度专题 ---------- */
.page-about .about-annual {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
}

@media (min-width: 940px) {
  .page-about .about-annual {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: start;
  }
}

.page-about .about-annual__note {
  border-left: 3px solid var(--cyan);
  padding-left: 18px;
}

.page-about .about-annual__note h2 {
  margin: 12px 0 0;
  font-size: clamp(1.5rem, 4.2vw, 2.4rem);
  line-height: 1.18;
  font-weight: 800;
  color: var(--line);
}

.page-about .about-annual__note p {
  margin: 16px 0 0;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: rgba(220, 231, 225, .84);
  max-width: 36em;
}

.page-about .about-annual__panel {
  padding: clamp(20px, 3.4vw, 32px);
}

.page-about .about-annual__panel h3 {
  margin: 0 0 16px;
  font-size: 1.16rem;
  font-weight: 700;
  line-height: 1.34;
}

.page-about .about-annual__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-annual__list li {
  position: relative;
  padding: 11px 0 11px 22px;
  font-size: 15px;
  line-height: 1.7;
  border-bottom: 1px dashed rgba(16, 22, 15, .22);
}

.page-about .about-annual__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  width: 8px;
  height: 8px;
  background: var(--red);
  transform: rotate(45deg);
}

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

.page-about .about-annual__links {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-annual__panel .btn--ghost {
  border-color: var(--paper-ink);
  color: var(--paper-ink);
  box-shadow: 4px 4px 0 rgba(16, 22, 15, .55);
}

.page-about .about-annual__panel .btn--ghost:hover,
.page-about .about-annual__panel .btn--ghost:focus-visible {
  background: var(--paper-ink);
  color: var(--paper);
}

/* ---------- 结尾引导 ---------- */
.page-about .about-sec--cta {
  border-bottom: 0;
  background:
    linear-gradient(200deg, var(--grass-mid) 0%, var(--ink) 70%);
}

.page-about .about-cta {
  max-width: 44em;
}

.page-about .about-cta h2 {
  margin: 12px 0 0;
  font-size: clamp(1.7rem, 5vw, 3rem);
  line-height: 1.14;
  font-weight: 800;
  color: var(--line);
}

.page-about .about-cta p {
  margin: 18px 0 0;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: rgba(220, 231, 225, .82);
}

.page-about .about-cta__actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 可访问性 ---------- */
.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
  }
}
<<<END>>>