.page-about {
  --about-rail-w: 236px;
  --about-gap: clamp(30px, 4.6vw, 68px);
}

/* ---------- 通用切角分隔线 ---------- */
.page-about .ruleslash {
  height: 1px;
  margin: clamp(40px, 6vw, 84px) auto;
  width: min(100% - 2 * var(--gutter), 1240px);
  background: linear-gradient(90deg, transparent, var(--line) 12%, var(--line) 78%, transparent);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(24px, 4vw, 52px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(28px, 4.5vw, 60px);
  align-items: center;
}

.page-about .about-hero__copy h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 4.4vw, 3.35rem);
  line-height: 1.22;
  letter-spacing: .015em;
  color: var(--paper);
  margin: .5em 0 .7em;
  max-width: 18ch;
}

.page-about .about-hero__lead {
  color: var(--muted);
  font-size: clamp(.95rem, 1.15vw, 1.02rem);
  line-height: 1.85;
  max-width: 52ch;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: clamp(14px, 2.4vw, 28px);
  margin-top: clamp(26px, 3.4vw, 40px);
  padding-top: clamp(18px, 2.2vw, 26px);
  border-top: 1px solid var(--line);
}

.page-about .about-hero__stats .metric__value {
  display: block;
  font-size: clamp(1.5rem, 2.8vw, 2.1rem);
  font-weight: 700;
  color: var(--lime);
  line-height: 1.1;
}

.page-about .about-hero__stats .metric__value em {
  font-style: normal;
  font-size: .62em;
  margin-left: .06em;
  vertical-align: .14em;
}

.page-about .about-hero__stats .metric__label {
  display: block;
  margin-top: .55em;
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-about .about-hero__figure {
  margin: 0;
  position: relative;
}

.page-about .about-hero__figure .figure__media {
  clip-path: var(--cut-md);
  overflow: hidden;
  background: var(--ink-700);
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  inset: auto -10px -10px auto;
  width: 42%;
  height: 42%;
  border-right: 1px solid var(--lime-line);
  border-bottom: 1px solid var(--lime-line);
  pointer-events: none;
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  }
}

/* ---------- 左栏 + 叙事主体 ---------- */
.page-about .about-layout {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-rail {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .about-rail__label {
  font-size: .7rem;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

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

.page-about .about-nav a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 10px 12px 10px 10px;
  color: var(--muted);
  text-decoration: none;
  font-size: .9rem;
  line-height: 1.5;
  border-left: 2px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-nav a:hover,
.page-about .about-nav a:focus-visible {
  color: var(--paper);
  background: var(--lime-soft);
  border-left-color: var(--lime-line);
}

.page-about .about-nav a[aria-current="true"],
.page-about .about-nav a[aria-current="page"] {
  color: var(--lime);
  border-left-color: var(--lime);
  background: var(--lime-soft);
}

.page-about .about-nav__idx {
  font-size: .72rem;
  color: currentColor;
  opacity: .72;
  flex: none;
}

.page-about .about-rail__note {
  font-size: .78rem;
}

@media (min-width: 1000px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
  }
  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }
}

@media (max-width: 999px) {
  .page-about .about-nav ol {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 8px;
    scrollbar-width: thin;
  }
  .page-about .about-nav a {
    flex: none;
    white-space: nowrap;
    border-left: 0;
    border-bottom: 2px solid var(--line);
    padding: 8px 12px;
  }
  .page-about .about-nav a:hover,
  .page-about .about-nav a:focus-visible,
  .page-about .about-nav a[aria-current="true"],
  .page-about .about-nav a[aria-current="page"] {
    border-left-color: transparent;
    border-bottom-color: var(--lime);
  }
}

/* ---------- 章节 ---------- */
.page-about .about-chapter {
  padding-block: clamp(40px, 6vw, 76px);
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

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

.page-about .about-chapter__head {
  max-width: 62ch;
}

.page-about .about-chapter__head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 2.6vw, 2.05rem);
  line-height: 1.34;
  letter-spacing: .012em;
  color: var(--paper);
  margin: .55em 0 0;
}

.page-about .about-chapter__intro {
  margin-top: 1.1em;
  color: var(--muted);
  font-size: .95rem;
  line-height: 1.85;
}

.page-about .about-chapter__body {
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-chapter__body p {
  color: var(--muted);
  font-size: .96rem;
  line-height: 1.9;
}

.page-about .about-chapter__body p + p {
  margin-top: 1.15em;
}

.page-about .about-chapter__body p:first-child::first-letter {
  font-family: var(--font-display);
  font-size: 2.6em;
  line-height: .92;
  float: left;
  padding: .06em .14em 0 0;
  color: var(--lime);
}

.page-about .about-aside {
  margin-top: clamp(22px, 3vw, 34px);
  padding-left: clamp(14px, 2vw, 22px);
  border-left: 2px solid var(--lime-line);
  max-width: 54ch;
}

.page-about .about-aside .note {
  font-size: .82rem;
  line-height: 1.8;
}

.page-about .about-chapter__figure {
  margin: clamp(28px, 4vw, 48px) 0 0;
}

.page-about .about-chapter__figure .figure__media {
  clip-path: var(--cut-md);
  overflow: hidden;
  background: var(--ink-700);
}

/* ---------- 赛季时间轴 ---------- */
.page-about .timeline {
  list-style: none;
  margin: clamp(26px, 3.6vw, 44px) 0 0;
  padding: 0;
  border-bottom: 1px solid var(--line);
}

.page-about .timeline__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: clamp(20px, 2.8vw, 30px) clamp(10px, 1.4vw, 18px);
  border-top: 1px solid var(--line);
  position: relative;
  transition: background var(--dur) var(--ease);
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: var(--line);
  transition: background var(--dur) var(--ease);
}

.page-about .timeline__item:hover,
.page-about .timeline__item:focus-within {
  background: var(--ink-700);
}

.page-about .timeline__item:hover::before,
.page-about .timeline__item:focus-within::before {
  background: var(--lime);
}

.page-about .timeline__year {
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--lime);
  line-height: 1.2;
}

.page-about .timeline__body h3 {
  font-family: var(--font-display);
  font-size: clamp(1.02rem, 1.6vw, 1.22rem);
  font-weight: 700;
  color: var(--paper);
  line-height: 1.5;
  margin: 0 0 .55em;
}

.page-about .timeline__body p {
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.85;
  margin: 0;
  max-width: 60ch;
}

.page-about .timeline__peek {
  margin-top: .9em !important;
  padding-left: 12px;
  border-left: 2px solid var(--line);
  font-size: .8rem !important;
  color: var(--muted);
  opacity: .85;
  transition: border-color var(--dur) var(--ease), opacity var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .timeline__item:hover .timeline__peek,
.page-about .timeline__item:focus-within .timeline__peek {
  border-left-color: var(--lime);
  opacity: 1;
  color: var(--paper);
}

@media (min-width: 720px) {
  .page-about .timeline__item {
    grid-template-columns: 6.4em minmax(0, 1fr);
    gap: clamp(18px, 3vw, 34px);
    align-items: start;
  }
}

/* ---------- 团队三卡 ---------- */
.page-about .desk-grid {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
  margin-top: clamp(24px, 3.4vw, 40px);
}

.page-about .desk-card {
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--ink-700);
  border-top: 2px solid var(--line);
  clip-path: var(--cut-sm);
  transition: border-color var(--dur) var(--ease);
}

.page-about .desk-card:hover {
  border-top-color: var(--lime);
}

.page-about .desk-card__no {
  font-size: clamp(1.6rem, 2.6vw, 2rem);
  font-weight: 700;
  color: var(--lime);
  line-height: 1;
  letter-spacing: .04em;
}

.page-about .desk-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--paper);
  margin: .8em 0 .6em;
}

.page-about .desk-card p {
  color: var(--muted);
  font-size: .89rem;
  line-height: 1.8;
  margin: 0;
}

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

/* ---------- 合作数字条 ---------- */
.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: clamp(16px, 2.6vw, 30px);
  margin-top: clamp(26px, 3.6vw, 42px);
  padding: clamp(22px, 3vw, 32px) clamp(18px, 2.4vw, 28px);
  background: var(--lime-soft);
  border-left: 2px solid var(--lime);
  clip-path: var(--cut-sm);
}

.page-about .about-figures .metric__value {
  display: block;
  font-size: clamp(1.45rem, 2.6vw, 1.95rem);
  font-weight: 700;
  color: var(--lime);
  line-height: 1.1;
}

.page-about .about-figures .metric__value--amber {
  color: var(--amber);
}

.page-about .about-figures .metric__value em {
  font-style: normal;
  font-size: .6em;
  margin-left: .06em;
  vertical-align: .14em;
}

.page-about .about-figures .metric__label {
  display: block;
  margin-top: .5em;
  font-size: .78rem;
  letter-spacing: .03em;
  color: var(--muted);
}

/* ---------- 底部行动 + 说明展开 ---------- */
.page-about .scope-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(26px, 3.4vw, 40px);
}

.page-about .about-disclose {
  margin-top: clamp(24px, 3vw, 34px);
  border-top: 1px solid var(--line);
  padding-top: clamp(18px, 2.4vw, 26px);
}

.page-about .about-disclose .disclose {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: .92rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  padding-bottom: 6px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-disclose .disclose::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--lime);
  font-size: 1rem;
  line-height: 1;
}

.page-about .about-disclose .disclose[aria-expanded="true"]::after {
  content: "–";
}

.page-about .about-disclose .disclose:hover,
.page-about .about-disclose .disclose:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-about .about-disclose .disclose__panel {
  display: none;
  margin-top: 16px;
  padding-left: clamp(12px, 2vw, 20px);
  border-left: 2px solid var(--lime-line);
  max-width: 60ch;
}

.page-about .about-disclose .disclose__panel[data-open] {
  display: block;
}

.page-about .about-disclose .disclose__panel p {
  color: var(--muted);
  font-size: .87rem;
  line-height: 1.85;
  margin: 0;
}

/* ---------- 图片基础 ---------- */
.page-about .figure__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.78) contrast(1.02) brightness(.94);
}

.page-about .figure__caption {
  margin-top: 12px;
  font-size: .78rem;
  line-height: 1.7;
  color: var(--muted);
  letter-spacing: .015em;
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 640px) {
  .page-about .about-hero__lead {
    font-size: .93rem;
  }
  .page-about .about-hero__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 20px;
  }
  .page-about .about-chapter__body p:first-child::first-letter {
    font-size: 2.1em;
  }
  .page-about .scope-actions .btn {
    flex: 1 1 100%;
    justify-content: center;
  }
}
<<<END>>>