.page-about {
  --about-ink-text: rgba(16, 28, 24, 0.86);
  --about-hair: rgba(16, 28, 24, 0.14);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(48px, 8vw, 108px) clamp(40px, 6vw, 76px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(111, 231, 210, 0.18), transparent 62%),
    radial-gradient(100% 80% at 0% 110%, rgba(199, 247, 63, 0.12), transparent 66%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -32%;
  right: -14%;
  width: 64%;
  height: 170%;
  background: linear-gradient(158deg, rgba(22, 50, 41, 0.92), rgba(7, 18, 15, 0) 72%);
  transform: rotate(-15deg);
  pointer-events: none;
}

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

.page-about .hero-block {
  margin-top: clamp(26px, 4vw, 44px);
  max-width: 58ch;
}

.page-about .hero-block .display-title {
  margin: 12px 0 20px;
  font-size: clamp(34px, 6.2vw, 72px);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.page-about .hero-block .lede {
  max-width: 52ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .hero-action {
  margin: 26px 0 0;
}

.page-about .stat-row {
  list-style: none;
  margin: clamp(36px, 5vw, 60px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-about .stat-row li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px;
  background: var(--green-800);
}

.page-about .stat-num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: 0.04em;
  color: var(--lime-400);
  line-height: 1;
}

.page-about .stat-label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 阅读区双轴布局 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 44px);
  align-items: start;
}

.page-about .about-toc {
  border-bottom: 1px solid var(--about-hair);
  padding-bottom: 14px;
  min-width: 0;
}

.page-about .toc-title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--slate-600);
}

.page-about .about-toc .toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-toc .toc-list a {
  display: inline-block;
  white-space: nowrap;
  padding: 8px 13px;
  border: 1px solid var(--about-hair);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate-600);
  text-decoration: none;
}

.page-about .about-toc .toc-list a[aria-current="true"] {
  background: var(--ink-950);
  border-color: var(--ink-950);
  color: var(--lime-400);
}

/* ---------- 章节通用 ---------- */
.page-about .chapter {
  padding-block: clamp(30px, 4.6vw, 54px);
  border-top: 1px solid var(--about-hair);
}

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

.page-about .chapter-title {
  margin: 10px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}

.page-about .chapter p {
  margin: 0 0 16px;
  max-width: 64ch;
  font-size: 17px;
  line-height: 1.78;
  color: var(--about-ink-text);
}

.page-about .chapter-lede {
  margin-bottom: 26px;
  font-size: 16px;
  color: var(--slate-600);
}

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

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--radius-m);
  border: 1px solid var(--about-hair);
}

.page-about .about-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate-600);
}

/* ---------- 01 主张的起点 ---------- */
.page-about .origin-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
}

.page-about .origin-figure {
  margin-top: 18px;
}

.page-about .pull-quote {
  margin: 30px 0 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--lime-400);
}

.page-about .pull-quote p {
  margin: 0;
  max-width: 26ch;
  font-family: var(--font-serif);
  font-size: clamp(20px, 2.8vw, 30px);
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

/* ---------- 02 版本演进 ---------- */
.page-about .about-figure--wide {
  margin-top: 0;
  margin-bottom: 26px;
}

.page-about .tl-scroll {
  margin: 0 -4px;
  padding: 0 4px;
}

.page-about .tl-track {
  display: flex;
  gap: 14px;
  margin: 0;
  padding: 0 0 12px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-about .tl-item {
  display: flex;
  flex-direction: column;
  flex: 0 0 min(272px, 80vw);
  scroll-snap-align: start;
  padding: 22px 20px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-m);
  background: linear-gradient(168deg, var(--green-800), var(--ink-950));
  color: var(--paper-050);
}

.page-about .tl-item:nth-child(2) {
  padding-top: 32px;
}

.page-about .tl-item:nth-child(3) {
  padding-top: 42px;
}

.page-about .tl-item .accordion-trigger {
  position: relative;
  display: grid;
  gap: 6px;
  width: 100%;
  padding: 0 26px 0 0;
  border: 0;
  background: none;
  color: inherit;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-body);
}

.page-about .tl-ver {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.12em;
  color: var(--lime-400);
}

.page-about .tl-name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.page-about .tl-sum {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

.page-about .tl-item .accordion-body {
  padding-top: 14px;
  margin-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-about .tl-item .accordion-mark {
  position: absolute;
  top: 2px;
  right: 0;
  color: var(--lime-200);
}

/* ---------- 03 团队 ---------- */
.page-about .team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-bottom: 8px;
}

.page-about .fact-card {
  padding: 20px 18px;
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-m);
  background: rgba(230, 241, 234, 0.5);
}

.page-about .fact-num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--green-700);
}

.page-about .fact-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-about .fact-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--slate-600);
}

/* ---------- 04 排期来源 ---------- */
.page-about .sched-block {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 40px);
  border-radius: var(--radius-l);
  background: linear-gradient(155deg, var(--green-800), var(--ink-950) 78%);
  color: var(--paper-050);
}

.page-about .sched-block::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(230, 241, 234, 0.05) 0,
    rgba(230, 241, 234, 0.05) 1px,
    transparent 1px,
    transparent 7px
  );
  pointer-events: none;
}

.page-about .sched-steps {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .sched-step {
  padding: 18px 16px;
  border-radius: var(--radius-m);
  border: 1px solid rgba(230, 241, 234, 0.2);
  background: rgba(230, 241, 234, 0.08);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.page-about .step-no {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--cyan-300);
}

.page-about .sched-step h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--paper-050);
}

.page-about .sched-step p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(243, 241, 232, 0.72);
}

.page-about .sched-note {
  position: relative;
  z-index: 1;
  margin: 20px 0 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-about .sched-note a {
  color: var(--lime-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(199, 247, 63, 0.45);
}

.page-about .sched-note a:hover,
.page-about .sched-note a:focus-visible {
  color: var(--lime-200);
  border-bottom-color: var(--lime-200);
}

/* ---------- 05 判断 ---------- */
.page-about .judge-accordion {
  border-top: 1px solid var(--about-hair);
}

.page-about .judge-accordion .accordion-item {
  border-bottom: 1px solid var(--about-hair);
}

.page-about .judge-accordion .accordion-trigger {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 20px 30px 20px 0;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
}

.page-about .judge-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-about .judge-accordion .accordion-trigger[aria-expanded="true"] .judge-title {
  color: var(--green-700);
}

.page-about .judge-accordion .accordion-mark {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  color: var(--slate-600);
}

.page-about .judge-accordion .accordion-body {
  padding: 0 0 22px;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate-600);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  position: relative;
  overflow: hidden;
}

.page-about .about-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(90% 100% at 80% 0%, rgba(199, 247, 63, 0.14), transparent 60%);
  pointer-events: none;
}

.page-about .cta-inner {
  position: relative;
  z-index: 1;
  max-width: 62ch;
}

.page-about .cta-title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(26px, 3.8vw, 42px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--paper-050);
}

.page-about .cta-inner .lede {
  margin: 0 0 24px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

.page-about .cta-note {
  margin: 22px 0 0;
  font-size: 14px;
  color: var(--text-dim);
}

.page-about .cta-note a {
  color: var(--lime-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(199, 247, 63, 0.45);
}

.page-about .cta-note a:hover,
.page-about .cta-note a:focus-visible {
  color: var(--lime-200);
  border-bottom-color: var(--lime-200);
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 620px) {
  .page-about .stat-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 820px) {
  .page-about .origin-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(24px, 3.6vw, 40px);
    align-items: start;
  }

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

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

  .page-about .about-figure--wide {
    margin-top: 0;
  }
}

@media (min-width: 980px) {
  .page-about .about-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: clamp(36px, 5vw, 76px);
  }

  .page-about .about-toc {
    position: sticky;
    top: 104px;
    align-self: start;
    border-bottom: 0;
    padding-bottom: 0;
  }

  .page-about .about-toc .toc-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .page-about .about-toc .toc-list a {
    position: relative;
    display: block;
    padding: 10px 0 10px 20px;
    border: 0;
    border-radius: 0;
    background: none;
    white-space: normal;
    font-size: 12.5px;
    color: var(--slate-600);
    transition: color 0.2s ease;
  }

  .page-about .about-toc .toc-list a::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 8px;
    height: 2px;
    background: rgba(16, 28, 24, 0.22);
    transform: translateY(-50%);
    transition: width 0.22s ease, background-color 0.22s ease;
  }

  .page-about .about-toc .toc-list a[aria-current="true"] {
    background: none;
    color: var(--ink-900);
    font-weight: 600;
  }

  .page-about .about-toc .toc-list a[aria-current="true"]::before {
    width: 18px;
    background: var(--lime-400);
  }

  .page-about .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .sched-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-about .tl-track {
    padding-bottom: 16px;
  }

  .page-about .tl-item {
    flex-basis: 288px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-toc .toc-list a,
  .page-about .about-toc .toc-list a::before {
    transition: none;
  }
}
<<<END>>>