.page-about {
  --about-measure: 620px;
  --about-gap: clamp(46px, 6vw, 86px);
  overflow-x: hidden;
  color: var(--paper);
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-about h2 {
  margin: 0;
  max-width: 17ch;
  font-family: var(--font-head);
  font-size: clamp(30px, 4.6vw, 48px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  font-weight: 600;
  color: var(--paper);
}

.page-about .section {
  position: relative;
  padding: var(--about-gap) 0;
}

.page-about .section--tight {
  padding-top: clamp(24px, 4vw, 48px);
}

.page-about .section-head {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: clamp(22px, 3.5vw, 36px);
}

.page-about .section-note {
  margin: 0;
  max-width: 300px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

/* 首屏 */
.about-hero {
  position: relative;
  padding: clamp(18px, 3vw, 36px) 0 0;
}

.about-hero::before {
  content: "";
  position: absolute;
  top: -24px;
  right: -12%;
  z-index: 0;
  width: min(68vw, 760px);
  height: clamp(220px, 34vw, 400px);
  pointer-events: none;
  background: linear-gradient(135deg, rgba(200, 255, 61, 0.15), rgba(200, 255, 61, 0) 64%);
  clip-path: polygon(18% 0, 100% 0, 100% 100%, 0 72%);
}

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

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: end;
}

.about-hero h1 {
  margin: 10px 0 18px;
  max-width: 14ch;
  font-family: var(--font-head);
  font-size: clamp(44px, 8vw, 96px);
  line-height: 0.94;
  letter-spacing: -0.025em;
  font-weight: 600;
  color: var(--paper);
}

.about-hero .lead {
  max-width: var(--about-measure);
  margin: 0;
  color: var(--muted);
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.hero-board {
  padding: 22px;
  border-radius: var(--r-lg);
  background: var(--lime);
  color: var(--ink);
  box-shadow: var(--shadow-1);
}

.board-kicker {
  margin: 0;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(6, 18, 15, 0.62);
}

.board-num {
  margin: 8px 0 6px;
  font-family: var(--font-num);
  font-size: clamp(64px, 13vw, 112px);
  line-height: 0.8;
  letter-spacing: -0.06em;
  color: var(--ink);
}

.board-text {
  margin: 0;
  max-width: 30ch;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(6, 18, 15, 0.78);
}

.board-foot {
  margin: 16px 0 0;
  padding-top: 10px;
  border-top: 1px solid rgba(6, 18, 15, 0.25);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(6, 18, 15, 0.78);
}

.hero-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 18px 0 8px;
  margin-top: 22px;
  border-bottom: 1px solid var(--line);
}

/* 团队 */
.team-section,
.process-section,
.standard-section,
.coverage-section {
  position: relative;
}

.team-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.team-stat {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(18, 49, 40, 0.92), rgba(6, 18, 15, 0.58));
}

.team-stat .stat-num {
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(88px, 17vw, 168px);
  line-height: 0.78;
  letter-spacing: -0.08em;
  color: var(--lime);
}

.team-stat .stat-key {
  display: block;
  margin-top: 10px;
  font-family: var(--font-head);
  font-size: 18px;
  letter-spacing: 0.08em;
  color: var(--paper);
}

.team-stat-text {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.team-list {
  display: grid;
  gap: 12px;
}

.team-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-1);
}

.team-card summary {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 4px 14px;
  align-items: center;
  padding: 18px 56px 18px 22px;
  cursor: pointer;
  list-style: none;
}

.team-card summary::-webkit-details-marker {
  display: none;
}

.team-card summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 20px;
  transform: translateY(-50%);
  font-family: var(--font-num);
  font-size: 24px;
  line-height: 1;
  color: var(--lime);
}

.team-card[open] summary::after {
  content: "−";
}

.team-card summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.team-index {
  grid-row: 1 / span 2;
  align-self: start;
  padding-top: 4px;
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--orange);
}

.team-name {
  grid-column: 2;
  font-family: var(--font-head);
  font-size: 22px;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.team-count {
  grid-column: 3;
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

.team-brief {
  grid-column: 2 / -1;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.team-body {
  margin-top: 2px;
  padding: 14px 22px 20px;
  border-top: 1px solid var(--line);
}

.team-body ul {
  margin: 0;
  padding-left: 18px;
}

.team-body li {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}

.team-body li::marker {
  color: var(--lime);
}

.team-note {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  margin-top: 22px;
  padding: 20px 22px;
  border-radius: var(--r-lg);
}

.team-note p {
  margin: 0;
  max-width: 74ch;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.team-note strong {
  color: var(--lime);
  font-weight: 600;
}

/* 章节间隔竖标 */
.chapter-gap {
  display: flex;
  justify-content: flex-end;
  padding: clamp(26px, 5vw, 60px) 0;
}

.chapter-gap span {
  padding-left: 10px;
  border-left: 1px solid var(--line);
  writing-mode: vertical-rl;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.55;
}

/* 流程 */
.process-figure {
  margin: 0 0 30px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel);
}

.process-figure img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.process-figure .media-cap {
  margin: 0;
  padding: 10px 16px;
  background: var(--frame);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.process-intro {
  max-width: var(--about-measure);
  margin: 0;
  color: var(--muted);
  line-height: 1.9;
}

.flow-track {
  display: grid;
  gap: 0;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.flow-node {
  position: relative;
  padding: 0 0 26px 26px;
  border-left: 1px solid var(--line);
  outline: none;
}

.flow-node:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.flow-node:hover .flow-dot,
.flow-node:focus-visible .flow-dot {
  background: var(--lime-soft);
  box-shadow: 0 0 0 7px rgba(200, 255, 61, 0.18);
}

.flow-node:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 6px;
}

.flow-dot {
  position: absolute;
  top: 2px;
  left: -6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 5px rgba(200, 255, 61, 0.12);
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.flow-name {
  display: block;
  font-family: var(--font-head);
  font-size: 20px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.flow-note {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.flow-tip {
  position: absolute;
  top: calc(100% - 8px);
  left: 0;
  z-index: 4;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-num);
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur) var(--ease);
}

.flow-node:hover .flow-tip,
.flow-node:focus-visible .flow-tip {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.flow-foot {
  max-width: var(--about-measure);
  margin: 24px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--orange);
  color: var(--orange-soft);
  font-size: 14px;
  line-height: 1.8;
}

/* 标准 */
.standard-grid {
  gap: 30px;
  align-items: center;
}

.standard-copy {
  max-width: var(--about-measure);
}

.standard-copy p {
  margin: 0 0 16px;
  color: var(--muted);
  line-height: 1.9;
}

.team-quote {
  margin: 26px 0;
  padding: 16px 20px 16px 22px;
  border-left: 3px solid var(--lime);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: rgba(200, 255, 61, 0.07);
}

.team-quote p {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--lime-soft);
}

.standard-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 24px;
}

.standard-stats .stat {
  padding: 14px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(18, 49, 40, 0.58);
}

.standard-stats .stat-num {
  display: block;
  font-family: var(--font-num);
  font-size: 28px;
  line-height: 1;
  color: var(--orange);
}

.standard-stats .stat-key {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  line-height: 1.5;
  color: var(--muted);
}

.standard-media {
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
}

.standard-media img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

/* 历程 */
.history-section {
  position: relative;
  overflow: hidden;
}

.history-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.12;
  filter: grayscale(1) contrast(1.1);
  pointer-events: none;
}

.history-inner {
  position: relative;
  z-index: 1;
}

.history-list {
  display: grid;
  gap: 10px;
  max-width: 900px;
  margin-top: 30px;
}

.year-item {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(11, 29, 24, 0.76);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.year-item[open] {
  border-color: rgba(200, 255, 61, 0.38);
  background: rgba(18, 49, 40, 0.82);
}

.year-item summary {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 14px 54px 14px 18px;
  cursor: pointer;
  list-style: none;
}

.year-item summary::-webkit-details-marker {
  display: none;
}

.year-item summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 20px;
  transform: translateY(-50%);
  font-family: var(--font-num);
  font-size: 22px;
  line-height: 1;
  color: var(--lime);
}

.year-item[open] summary::after {
  content: "−";
}

.year-item summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.year {
  font-family: var(--font-num);
  font-size: clamp(24px, 4vw, 40px);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--orange);
}

.year-name {
  font-family: var(--font-head);
  font-size: 17px;
  letter-spacing: 0.08em;
  color: var(--paper);
}

.year-body {
  max-width: var(--about-measure);
  padding: 0 18px 18px;
}

.year-body p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}

/* 覆盖 */
.coverage-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.coverage-copy {
  max-width: var(--about-measure);
}

.coverage-copy p {
  margin: 0 0 16px;
  color: var(--muted);
  line-height: 1.9;
}

.coverage-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 26px;
  margin: 24px 0;
}

.coverage-facts > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 90px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.coverage-facts .num {
  font-family: var(--font-num);
  font-size: 26px;
  line-height: 1;
  color: var(--orange);
}

.coverage-facts > div > span:last-child {
  font-size: 12px;
  color: var(--muted);
}

.coverage-note {
  font-family: var(--font-num);
  font-size: 12px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.coverage-chart {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, var(--panel), rgba(18, 49, 40, 0.55));
}

.chart-head {
  margin: 0 0 18px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime);
}

.chart-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 8px 12px;
  align-items: center;
  margin-bottom: 16px;
}

.chart-row:last-child {
  margin-bottom: 0;
}

.chart-label {
  grid-column: 1;
  font-size: 13px;
  line-height: 1.4;
  color: var(--paper);
}

.chart-bar {
  grid-column: 2;
  display: block;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan), var(--lime));
}

.chart-bar--full {
  width: 100%;
}

.chart-bar--wide {
  width: 72%;
}

.chart-bar--mid {
  width: 62%;
}

.chart-bar--other {
  width: 86%;
}

.chart-note {
  grid-column: 2;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* 收束 */
.cta-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow: hidden;
  padding: clamp(28px, 5vw, 56px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel);
}

.cta-panel::before {
  content: "";
  position: absolute;
  top: -42%;
  right: -10%;
  width: 340px;
  height: 340px;
  pointer-events: none;
  background: radial-gradient(circle, rgba(200, 255, 61, 0.24), rgba(200, 255, 61, 0) 68%);
}

.cta-panel > * {
  position: relative;
  z-index: 1;
}

.cta-panel p {
  margin: 0;
  max-width: 58ch;
  color: var(--muted);
  line-height: 1.9;
}

@media (min-width: 720px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(250px, 0.75fr);
    gap: 32px;
  }

  .about-hero h1 {
    max-width: 15ch;
  }

  .hero-board {
    transform: rotate(-1.2deg);
  }

  .team-layout {
    grid-template-columns: minmax(180px, 0.55fr) minmax(0, 1.45fr);
    gap: 24px;
  }

  .team-note {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .chart-row {
    grid-template-columns: 130px minmax(0, 1fr) 74px;
  }

  .chart-note {
    grid-column: 3;
    text-align: right;
  }

  .coverage-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 40px;
  }
}

@media (min-width: 880px) {
  .page-about .section-head {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
  }

  .page-about .section-note {
    padding-bottom: 4px;
  }

  .flow-track {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 22px;
  }

  .flow-node {
    padding: 26px 14px 0 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .flow-node:last-child {
    padding-bottom: 0;
    border-top-color: var(--line);
    border-left-color: transparent;
  }

  .flow-dot {
    top: -6px;
    left: 0;
  }

  .flow-tip {
    top: calc(100% + 10px);
  }

  .flow-node:last-child .flow-tip {
    right: 0;
    left: auto;
  }
}

@media (min-width: 1040px) {
  .team-stat {
    padding: 24px;
  }

  .standard-grid {
    gap: 48px;
  }

  .history-list {
    margin-top: 36px;
  }
}
<<<END>>>