.page-about {
  --about-rail: clamp(72px, 8vw, 124px);
  --about-stick: 104px;
  --about-tl-gap: clamp(16px, 2.6vw, 40px);
  --about-dot: 9px;
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: clamp(6px, 1.6vw, 16px) clamp(26px, 4vw, 56px);
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.5vw, 48px);
  align-items: start;
}

.page-about .about-hero-main .lede {
  max-width: 34em;
  margin-top: clamp(12px, 1.6vw, 18px);
}

@media (min-width: 920px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    align-items: end;
  }
  .page-about .about-hero-card {
    margin-bottom: 6px;
  }
}

.page-about .about-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-top: clamp(18px, 2.4vw, 28px);
}

.page-about .about-jump a {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--current);
  text-decoration: none;
  padding: 6px 13px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--card);
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.page-about .about-jump a:hover,
.page-about .about-jump a:focus-visible {
  color: var(--orange-deep);
  border-color: var(--orange);
  background: rgba(255, 107, 44, 0.07);
}

.page-about .about-hero-card {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 3vw, 32px);
  color: var(--paper);
  border-radius: var(--radius-md) var(--radius-lg) var(--radius-md) var(--radius-lg);
  background:
    radial-gradient(130% 120% at 94% 4%, var(--cyan) 0%, var(--current) 44%, var(--basin) 100%);
  box-shadow: var(--shadow-soft);
}

.page-about .about-hero-card::after {
  content: "";
  position: absolute;
  right: -32%;
  bottom: -58%;
  width: 78%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(127, 227, 232, 0.32);
  pointer-events: none;
}

.page-about .about-hero-card-title {
  margin: 0 0 14px;
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--shallow);
}

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

.page-about .about-fact {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-block: 12px;
  border-top: 1px solid rgba(246, 241, 231, 0.16);
}

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

.page-about .about-fact-value {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  line-height: 1;
  color: var(--shallow);
}

.page-about .about-unit {
  font-size: 0.58em;
  margin-left: 2px;
}

.page-about .about-fact-label {
  font-size: 13.5px;
  line-height: 1.5;
  color: rgba(246, 241, 231, 0.84);
}

/* ---------- 版本沿革 ---------- */
.page-about .about-stage-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 44px);
  align-items: center;
  margin-bottom: clamp(22px, 3.4vw, 44px);
}

@media (min-width: 880px) {
  .page-about .about-stage-head {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }
}

.page-about .about-stage-media {
  aspect-ratio: 10 / 7;
  border-radius: var(--radius-lg) var(--radius-lg) var(--radius-md) 0;
}

.page-about .about-tl {
  list-style: none;
  margin: 0;
  padding: 0;
  border-bottom: 1px solid var(--rule);
}

.page-about .about-tl-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding-block: clamp(16px, 2.4vw, 30px);
  border-top: 1px solid var(--rule);
}

@media (min-width: 720px) {
  .page-about .about-tl-row {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: var(--about-tl-gap);
  }
}

.page-about .about-tl-year {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 27px);
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.1;
  color: var(--cyan);
}

.page-about .about-tl-year::before {
  content: "";
  flex: 0 0 auto;
  width: var(--about-dot);
  height: var(--about-dot);
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 44, 0.15);
  margin-top: 0.24em;
}

@media (min-width: 720px) {
  .page-about .about-tl-year {
    position: sticky;
    top: var(--about-stick);
    align-items: flex-start;
    align-self: start;
    padding-top: 6px;
  }
}

.page-about .about-tl-body h3 {
  margin: 0 0 8px;
  color: var(--current);
  font-size: clamp(16px, 1.8vw, 18px);
}

.page-about .about-tl-body p {
  margin: 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
}

/* ---------- 内容生产 ---------- */
.page-about .about-flow-media {
  aspect-ratio: 12 / 5;
  margin-top: clamp(20px, 3vw, 32px);
  border-radius: var(--radius-md) var(--radius-lg) var(--radius-md) var(--radius-lg);
}

.page-about .about-flow {
  list-style: none;
  margin: clamp(20px, 2.8vw, 32px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(12px, 1.6vw, 16px);
}

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

@media (min-width: 1060px) {
  .page-about .about-flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.page-about .about-step {
  padding: clamp(16px, 2vw, 20px);
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md) var(--radius-md) var(--radius-md) 4px;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.page-about .about-step:hover,
.page-about .about-step:focus-within {
  transform: translateY(-4px);
  border-color: var(--orange);
  box-shadow: 0 18px 40px -28px rgba(6, 40, 61, 0.7);
}

.page-about .about-step-num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-about .about-step h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.page-about .about-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.62;
  color: var(--mist);
}

.page-about .about-step-time {
  display: block;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--rule);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

/* ---------- 团队分工 ---------- */
.page-about .about-table-wrap {
  margin-top: clamp(20px, 3vw, 32px);
  overflow-x: auto;
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  background: var(--card);
  -webkit-overflow-scrolling: touch;
}

.page-about .about-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-about .about-table th {
  padding: 12px 16px;
  text-align: left;
  white-space: nowrap;
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--basin);
  background: rgba(127, 227, 232, 0.18);
}

.page-about .about-table td {
  padding: 14px 16px;
  vertical-align: top;
  line-height: 1.6;
  color: var(--ink);
  border-top: 1px solid var(--rule);
}

.page-about .about-table tbody tr:nth-child(odd) {
  background: var(--paper);
}

.page-about .about-table tbody tr:nth-child(even) {
  background: var(--card);
}

.page-about .about-role {
  font-weight: 800;
  color: var(--current);
}

.page-about .about-count {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--cyan);
}

.page-about .about-team .note {
  margin-top: clamp(16px, 2vw, 24px);
  max-width: 46em;
}

/* ---------- 项目覆盖 ---------- */
.page-about .about-cover {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 48px);
  align-items: center;
}

@media (min-width: 900px) {
  .page-about .about-cover {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  }
}

.page-about .about-cover-media {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg) 8px var(--radius-lg) var(--radius-lg);
}

.page-about .about-cover-body .prose {
  margin-top: 10px;
}

.page-about .about-disc {
  list-style: none;
  margin: clamp(16px, 2.4vw, 24px) 0;
  padding: 0;
  border-bottom: 1px solid var(--rule);
}

.page-about .about-disc li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 6px 14px;
  padding-block: 11px;
  border-top: 1px solid var(--rule);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink);
}

.page-about .about-disc .tag {
  transform: rotate(-3deg);
  white-space: nowrap;
}

/* ---------- 更正反馈 ---------- */
.page-about .about-fix-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 44px);
  padding: clamp(24px, 3.4vw, 48px);
  border-radius: var(--radius-lg) var(--radius-lg) 10px var(--radius-lg);
  background: linear-gradient(138deg, var(--basin) 0%, var(--current) 62%, var(--cyan) 148%);
  color: var(--paper);
}

@media (min-width: 860px) {
  .page-about .about-fix-card {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

.page-about .about-fix-card .eyebrow {
  color: var(--shallow);
}

.page-about .about-fix-card .section-title {
  color: var(--paper);
  margin-top: 6px;
}

.page-about .about-fix-card p {
  color: rgba(246, 241, 231, 0.86);
  font-size: 15.5px;
  line-height: 1.75;
  max-width: 34em;
}

.page-about .about-fix-card p + p {
  margin-top: 10px;
}

.page-about .about-fix-title {
  margin: 0 0 12px;
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--shallow);
}

.page-about .about-fix-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-fix-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.6;
  color: rgba(246, 241, 231, 0.92);
}

.page-about .about-fix-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
}

.page-about .about-next {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}
<<<END>>>