.page-about {
  --about-line: 1px solid var(--line-soft);
  --about-gap: clamp(44px, 7vw, 88px);
  --about-turf-texture: repeating-linear-gradient(
    90deg,
    rgba(28, 70, 58, 0.55) 0,
    rgba(28, 70, 58, 0.55) 1px,
    transparent 1px,
    transparent 34px
  );
  color: var(--lamp);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-about .about-hero {
  padding-top: clamp(18px, 3vw, 34px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(18px, 3vw, 34px);
}

.page-about .about-hero__stamp {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-top: 2px solid var(--score);
  padding-top: 14px;
}

.page-about .about-hero__big {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(78px, 19vw, 124px);
  line-height: 0.78;
  letter-spacing: -0.03em;
  color: var(--lamp);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__stamp-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ice);
}

.page-about .about-hero__stamp-note {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-faint);
}

.page-about .about-hero__lead h1 {
  margin: 10px 0 14px;
  font-size: clamp(30px, 5.4vw, 52px);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--lamp);
}

.page-about .about-hero__intro {
  margin: 0;
  max-width: 34em;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .about-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-jump a {
  display: inline-block;
  padding: 6px 11px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ice);
  text-decoration: none;
  background: rgba(14, 47, 39, 0.45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.page-about .about-jump a:hover,
.page-about .about-jump a:focus-visible {
  color: var(--lamp);
  border-color: var(--score);
  transform: translateY(-2px);
}

.page-about .about-hero__media {
  margin: clamp(24px, 4vw, 44px) 0 0;
  overflow: hidden;
  border: var(--about-line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--stand), var(--ink) 70%);
  box-shadow: var(--shadow);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-about .about-section {
  margin-top: var(--about-gap);
}

.page-about .about-lede {
  margin: 14px 0 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .about-lede a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .about-lede a:hover,
.page-about .about-lede a:focus-visible {
  color: var(--lamp);
  border-bottom-color: var(--score);
}

/* 01 起源 */
.page-about .about-origin {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  margin-top: clamp(20px, 3vw, 30px);
  color: var(--ink);
}

.page-about .about-origin__body p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.82;
  color: var(--ink);
}

.page-about .about-origin__body p:last-child {
  margin-bottom: 0;
}

.page-about .about-origin__facts {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(7, 31, 26, 0.22);
  padding-top: 18px;
}

.page-about .about-origin__facts li {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-origin__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 34px;
  line-height: 1;
  color: var(--score-deep);
  font-variant-numeric: tabular-nums;
  min-width: 2.4em;
}

.page-about .about-origin__label {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(7, 31, 26, 0.78);
}

/* 02 时间轴 */
.page-about .about-timeline {
  position: relative;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--line-soft);
}

.page-about .about-timeline__item {
  position: relative;
  padding: 14px 0 14px 36px;
  border-radius: var(--radius);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 22px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--ice);
  box-shadow: 0 0 0 3px var(--ink);
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-timeline__item:hover::before,
.page-about .about-timeline__item:focus-within::before {
  background: var(--score);
  box-shadow: 0 0 0 3px var(--ink), 0 0 0 5px rgba(255, 90, 54, 0.28);
}

.page-about .about-timeline__year {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 6vw, 46px);
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--lamp);
  font-variant-numeric: tabular-nums;
  transition: color var(--dur) var(--ease);
}

.page-about .about-timeline__item:hover .about-timeline__year,
.page-about .about-timeline__item:focus-within .about-timeline__year {
  color: var(--ice);
}

.page-about .about-timeline__body {
  margin-top: 8px;
}

.page-about .about-timeline__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
}

.page-about .about-timeline__headline {
  margin: 0 0 6px;
  font-size: 18px;
  line-height: 1.45;
  font-weight: 700;
  color: var(--lamp);
}

.page-about .about-timeline__text {
  margin: 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .about-timeline__item--current {
  background: linear-gradient(90deg, rgba(255, 90, 54, 0.12), rgba(255, 90, 54, 0) 78%);
  box-shadow: inset 0 0 0 1px rgba(255, 90, 54, 0.5);
  padding-right: 14px;
}

.page-about .about-timeline__item--current::before {
  background: var(--score);
  box-shadow: 0 0 0 3px var(--ink), 0 0 0 5px rgba(255, 90, 54, 0.35);
}

.page-about .about-timeline__item--current .about-timeline__year {
  color: var(--score);
}

/* 中段通道图 */
.page-about .about-corridor {
  margin: var(--about-gap) 0 0;
  overflow: hidden;
  border: var(--about-line);
  border-radius: var(--radius);
  background: linear-gradient(200deg, var(--turf), var(--ink) 72%);
}

.page-about .about-corridor img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: 0.92;
}

/* 03 编辑桌 */
.page-about .about-desk {
  display: grid;
  gap: 16px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-desk__card {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  border: var(--about-line);
  border-radius: var(--radius);
  background-color: rgba(14, 47, 39, 0.72);
  background-image: var(--about-turf-texture);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-desk__card:hover,
.page-about .about-desk__card:focus-within {
  border-color: var(--score);
  transform: translateY(-2px);
}

.page-about .about-desk__count {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ice);
}

.page-about .about-desk__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 42px;
  line-height: 0.9;
  color: var(--lamp);
  font-variant-numeric: tabular-nums;
}

.page-about .about-desk__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--lamp);
}

.page-about .about-desk__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--ink-soft);
}

.page-about .about-desk__photo {
  margin: clamp(20px, 3vw, 32px) 0 0;
  overflow: hidden;
  border: var(--about-line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--stand), var(--ink));
}

.page-about .about-desk__photo img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-desk__strip {
  margin-top: clamp(20px, 3vw, 30px);
  padding-top: 20px;
  border-top: var(--about-line);
}

.page-about .about-desk__strip p {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .about-desk__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 34px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-desk__stats li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-about .about-desk__statnum {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 30px;
  line-height: 1;
  color: var(--score);
  font-variant-numeric: tabular-nums;
}

.page-about .about-desk__statlabel {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
}

/* 04 资料路径 */
.page-about .about-brief {
  margin-top: clamp(20px, 3vw, 30px);
  color: var(--ink);
}

.page-about .about-brief__intro {
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .about-brief__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(7, 31, 26, 0.2);
}

.page-about .about-brief__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(7, 31, 26, 0.16);
}

.page-about .about-brief__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ice-deep);
  padding-top: 4px;
}

.page-about .about-brief__title {
  margin: 0 0 6px;
  font-size: 17px;
  line-height: 1.5;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-brief__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(7, 31, 26, 0.8);
}

.page-about .about-brief__foot {
  margin: 20px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .about-brief__foot a {
  color: var(--ice-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(30, 101, 117, 0.45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-brief__foot a:hover,
.page-about .about-brief__foot a:focus-visible {
  color: var(--score-deep);
  border-bottom-color: var(--score-deep);
}

/* 05 合作生态 */
.page-about .about-eco {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-eco__block {
  flex: 1 1 260px;
  min-width: 0;
  padding: clamp(16px, 2.2vw, 24px);
  border: var(--about-line);
  border-left: 2px solid var(--turf);
  border-radius: var(--radius);
  background: rgba(14, 47, 39, 0.55);
  transition: border-color var(--dur) var(--ease);
}

.page-about .about-eco__block:hover,
.page-about .about-eco__block:focus-within {
  border-left-color: var(--score);
}

.page-about .about-eco__title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--lamp);
}

.page-about .about-eco__text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .about-eco__more {
  border-top: 1px solid var(--line-soft);
  padding-top: 12px;
}

.page-about .about-eco__more summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ice);
  list-style: none;
  transition: color var(--dur) var(--ease);
}

.page-about .about-eco__more summary::-webkit-details-marker {
  display: none;
}

.page-about .about-eco__more summary::before {
  content: "+ ";
  color: var(--score);
}

.page-about .about-eco__more[open] summary::before {
  content: "− ";
}

.page-about .about-eco__more summary:hover,
.page-about .about-eco__more summary:focus-visible {
  color: var(--lamp);
}

.page-about .about-eco__more p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .about-eco__foot {
  margin: 20px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .about-eco__foot a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
  transition: color var(--dur) var(--ease), border-bottom-color var(--dur) var(--ease);
}

.page-about .about-eco__foot a:hover,
.page-about .about-eco__foot a:focus-visible {
  color: var(--lamp);
  border-bottom-color: var(--score);
}

/* 06 下一程 */
.page-about .about-next {
  border-top: 2px solid var(--score);
  padding-top: clamp(24px, 3.5vw, 38px);
}

.page-about .about-next__links {
  display: grid;
  gap: 10px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-next__links a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border: var(--about-line);
  border-radius: var(--radius);
  text-decoration: none;
  background: rgba(14, 47, 39, 0.55);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-next__links a:hover,
.page-about .about-next__links a:focus-visible {
  border-color: var(--score);
  transform: translateY(-2px);
}

.page-about .about-next__kicker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--ice);
}

.page-about .about-next__label {
  font-size: 16px;
  font-weight: 600;
  color: var(--lamp);
}

.page-about .about-next__arrow {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--score);
}

.page-about .about-next__meta {
  margin: 22px 0 0;
  font-size: 12px;
  line-height: 1.9;
  color: var(--ink-faint);
}

@media (min-width: 720px) {
  .page-about .about-origin {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-about .about-origin__facts {
    border-top: none;
    border-left: 1px solid rgba(7, 31, 26, 0.22);
    padding-top: 0;
    padding-left: 20px;
    gap: 20px;
  }

  .page-about .about-desk {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-desk__card--a {
    grid-column: span 5;
  }

  .page-about .about-desk__card--b {
    grid-column: span 4;
    margin-top: 26px;
  }

  .page-about .about-desk__card--c {
    grid-column: span 3;
    margin-top: 52px;
  }

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

  .page-about .about-next__links a {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "kick arrow"
      "label label";
    row-gap: 10px;
    align-items: start;
  }

  .page-about .about-next__kicker {
    grid-area: kick;
  }

  .page-about .about-next__label {
    grid-area: label;
  }

  .page-about .about-next__arrow {
    grid-area: arrow;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 230px minmax(0, 1fr);
    align-items: start;
    gap: clamp(24px, 4vw, 52px);
  }

  .page-about .about-hero__stamp {
    position: sticky;
    top: 84px;
  }

  .page-about .about-timeline__item {
    display: grid;
    grid-template-columns: 140px minmax(0, 1fr);
    gap: clamp(18px, 3vw, 40px);
    padding-top: 16px;
    padding-bottom: 16px;
  }

  .page-about .about-timeline__item::before {
    top: 32px;
  }

  .page-about .about-timeline__body {
    margin-top: 0;
  }

  .page-about .about-timeline__text {
    font-size: 15.5px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero__media img {
    aspect-ratio: 21 / 10;
  }

  .page-about .about-brief__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 3vw, 44px);
  }

  .page-about .about-brief__item:nth-last-child(2) {
    border-bottom: none;
  }

  .page-about .about-brief__item:last-child {
    border-bottom: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-jump a,
  .page-about .about-desk__card,
  .page-about .about-next__links a,
  .page-about .about-timeline__item::before,
  .page-about .about-timeline__year {
    transition: none;
  }

  .page-about .about-jump a:hover,
  .page-about .about-jump a:focus-visible,
  .page-about .about-desk__card:hover,
  .page-about .about-desk__card:focus-within,
  .page-about .about-next__links a:hover,
  .page-about .about-next__links a:focus-visible {
    transform: none;
  }
}
<<<END>>>