.page-about {
  --about-rail-w: 264px;
  --about-gap: clamp(18px, 3vw, 40px);
  --about-ink-soft: #232a2c;
  background: var(--canvas);
  color: var(--ink);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 34px) 0 clamp(34px, 6vw, 60px);
  border-bottom: var(--line) solid var(--ink);
  background:
    repeating-linear-gradient(135deg, rgba(228, 255, 58, .09) 0 2px, transparent 2px 15px),
    linear-gradient(158deg, var(--turf-deep) 0%, var(--turf) 64%, #0d5a2e 100%);
  color: var(--canvas);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(16px, 3vw, 26px);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--volt);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 6.6vw, 60px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.01em;
  transform: skewX(-3deg);
  transform-origin: left center;
  display: inline-block;
  max-width: 20ch;
}

.page-about .about-hero__lede {
  margin: 16px 0 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.78;
  color: rgba(247, 248, 244, .9);
}

.page-about .about-hero__stamp {
  display: none;
  margin: 0;
  align-self: start;
  justify-self: end;
  padding: 14px 8px;
  border: var(--line) solid rgba(228, 255, 58, .55);
  writing-mode: vertical-rl;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .34em;
  line-height: 1.5;
  color: var(--volt);
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(24px, 4vw, 38px) 0 0;
  background: rgba(247, 248, 244, .25);
  border: var(--line) solid var(--ink);
  box-shadow: var(--shadow-hard);
}

.page-about .about-facts__item {
  padding: 12px 14px;
  background: var(--panel-ink);
}

.page-about .about-facts__item dt {
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(247, 248, 244, .68);
}

.page-about .about-facts__item dd {
  margin: 4px 0 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
  color: var(--volt);
}

.page-about .about-facts__item .score-num {
  font-family: var(--font-num);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.page-about .about-facts__unit {
  font-size: 12px;
  color: rgba(247, 248, 244, .78);
}

/* ---------- 主体：左轨 + 长文 ---------- */
.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  padding-block: clamp(26px, 5vw, 54px) clamp(50px, 8vw, 90px);
}

.page-about .about-rail {
  position: relative;
  min-width: 0;
}

.page-about .about-rail__note {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--muted);
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-rail__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: var(--line) solid var(--ink);
  background: var(--canvas);
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background .18s var(--ease-out), transform .18s var(--ease-out);
}

.page-about .about-rail__link:hover {
  background: var(--paper);
}

.page-about .about-rail__link.is-active {
  background: var(--volt);
  box-shadow: 4px 4px 0 var(--ink);
}

.page-about .about-rail__no {
  font-family: var(--font-num);
  font-size: 15px;
  letter-spacing: .04em;
  color: var(--turf);
}

.page-about .about-rail__link.is-active .about-rail__no {
  color: var(--ink);
}

.page-about .about-rail__foot {
  display: none;
  margin: 18px 0 0;
  padding-top: 12px;
  border-top: var(--line) solid var(--paper);
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-canvas {
  min-width: 0;
}

/* ---------- 章节 ---------- */
.page-about .about-sec {
  padding: clamp(22px, 4vw, 38px) 0;
  border-top: var(--line) solid var(--paper);
}

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

.page-about .about-sec__head {
  position: relative;
  padding-left: clamp(46px, 8vw, 74px);
  margin-bottom: 16px;
}

.page-about .about-sec__index {
  position: absolute;
  left: 0;
  top: -8px;
  font-family: var(--font-num);
  font-size: clamp(40px, 7.5vw, 66px);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -.03em;
  color: rgba(18, 112, 58, .18);
  pointer-events: none;
}

.page-about .about-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 4.2vw, 38px);
  font-weight: 800;
  line-height: 1.15;
  transform: skewX(-3deg);
  transform-origin: left center;
  display: inline-block;
}

.page-about .about-sec__body {
  display: grid;
  gap: 12px;
  max-width: 64ch;
}

.page-about .about-sec__body p {
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--about-ink-soft);
}

.page-about .about-sec__more {
  margin: 18px 0 0;
  max-width: none;
}

/* ---------- 场景行 ---------- */
.page-about .about-tiles {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: var(--line) solid var(--ink);
}

.page-about .about-tiles__row {
  display: grid;
  gap: 8px;
  padding: 14px 0;
  border-bottom: var(--line) solid var(--paper);
}

.page-about .about-tiles__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--about-ink-soft);
}

.page-about .about-tiles__link {
  justify-self: start;
  font-size: 14px;
  font-weight: 700;
  color: var(--turf);
  text-decoration: none;
  border-bottom: 2px solid var(--turf);
  transition: color .16s var(--ease-out), border-color .16s var(--ease-out);
}

.page-about .about-tiles__link:hover {
  color: var(--red);
  border-color: var(--red);
}

/* ---------- 团队分工 ---------- */
.page-about .about-crews {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-about .about-crews__row {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 0;
  border-bottom: var(--line) solid var(--paper);
}

.page-about .about-crews__no {
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--turf);
}

.page-about .about-crews__name {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .01em;
}

.page-about .about-crews__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-ink-soft);
}

/* ---------- 图片 ---------- */
.page-about .about-shot {
  margin: 22px 0 0;
}

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

.page-about .about-shot__cap {
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 轮次流程 ---------- */
.page-about .about-flow {
  margin-top: 20px;
}

.page-about .flow {
  position: relative;
}

.page-about .flow__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-about .flow__tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
}

.page-about .flow__tab {
  flex: 0 0 auto;
  padding: 9px 14px;
  border: var(--line) solid var(--ink);
  background: var(--canvas);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
  transition: background .16s var(--ease-out), box-shadow .16s var(--ease-out);
}

.page-about .flow__tab:hover {
  background: var(--paper);
}

.page-about .flow__radio:focus-visible ~ .flow__tabs {
  outline: 2px dashed var(--turf);
  outline-offset: 4px;
}

.page-about .flow__panels {
  border-left: 6px solid var(--turf);
  padding-left: 16px;
}

.page-about .flow__panel {
  display: none;
  padding-top: 14px;
}

.page-about .flow__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 800;
}

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

.page-about .flow__list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-about .flow__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-ink-soft);
}

.page-about .flow__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  background: var(--volt);
  border: var(--line) solid var(--ink);
}

.page-about #flow-pre:checked ~ .flow__tabs .flow__tab--1,
.page-about #flow-live:checked ~ .flow__tabs .flow__tab--2,
.page-about #flow-check:checked ~ .flow__tabs .flow__tab--3 {
  background: var(--volt);
  box-shadow: 3px 3px 0 var(--ink);
}

.page-about #flow-pre:checked ~ .flow__panels .flow__panel--1,
.page-about #flow-live:checked ~ .flow__panels .flow__panel--2,
.page-about #flow-check:checked ~ .flow__panels .flow__panel--3 {
  display: block;
  animation: about-fade .2s var(--ease-out) both;
}

@keyframes about-fade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

.page-about .about-flow__aside {
  margin-top: 24px;
  display: grid;
  gap: 20px;
}

/* ---------- 轮次周期环 ---------- */
.page-about .cycle {
  position: relative;
  width: min(190px, 62%);
  aspect-ratio: 1;
  margin: 0 auto;
  border-radius: 50%;
  border: var(--line) solid var(--ink);
  background: conic-gradient(var(--turf) 0 58%, var(--night) 58% 82%, var(--volt) 82% 100%);
  display: grid;
  place-items: center;
}

.page-about .cycle__core {
  width: 70%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--canvas);
  border: var(--line) solid var(--ink);
  display: grid;
  place-content: center;
  text-align: center;
  gap: 2px;
  padding: 8px;
}

.page-about .cycle__num {
  font-family: var(--font-num);
  font-size: 40px;
  font-weight: 700;
  line-height: .9;
  color: var(--turf);
  font-variant-numeric: tabular-nums;
}

.page-about .cycle__label {
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- 来源标注 ---------- */
.page-about .about-sources {
  margin: 20px 0 0;
  padding: 0;
  border-top: var(--line) solid var(--ink);
}

.page-about .about-sources__item {
  padding: 14px 0;
  border-bottom: var(--line) solid var(--paper);
}

.page-about .about-sources__chip {
  display: inline-block;
  padding: 4px 10px;
  border: var(--line) solid var(--ink);
  background: var(--paper);
  font-size: 13px;
  font-weight: 700;
  cursor: help;
  transition: background .16s var(--ease-out);
}

.page-about .about-sources__item:hover .about-sources__chip {
  background: var(--volt);
}

.page-about .about-sources__text {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-ink-soft);
}

/* ---------- 纠错三步 ---------- */
.page-about .about-fix {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: about-fix;
}

.page-about .about-fix__step {
  position: relative;
  padding: 14px 14px 14px 52px;
  background: var(--paper);
  border-left: 6px solid var(--turf);
}

.page-about .about-fix__no {
  position: absolute;
  left: 12px;
  top: 12px;
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--turf);
}

.page-about .about-fix__name {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
}

.page-about .about-fix__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-ink-soft);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partner {
  display: grid;
  gap: 20px;
  margin-top: 18px;
}

.page-about .about-partner__text p {
  margin: 0 0 12px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--about-ink-soft);
}

.page-about .about-partner__list {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-about .about-partner__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--about-ink-soft);
}

.page-about .about-partner__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 9px;
  height: 2px;
  background: var(--red);
}

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

/* ---------- 赛季里程碑 ---------- */
.page-about .about-seasons {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-seasons__item {
  position: relative;
  padding-top: 22px;
  border-top: var(--line) solid var(--ink);
}

.page-about .about-seasons__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: -6px;
  width: 10px;
  height: 10px;
  background: var(--volt);
  border: var(--line) solid var(--ink);
}

.page-about .about-seasons__stage {
  display: inline-block;
  margin-bottom: 8px;
  padding: 3px 9px;
  background: var(--turf);
  color: var(--canvas);
  font-size: 12px;
  letter-spacing: .1em;
}

.page-about .about-seasons__name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
}

.page-about .about-seasons__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-ink-soft);
}

.page-about .about-seasons__note {
  margin: 20px 0 0;
  padding: 14px;
  background: var(--paper);
  border-left: 6px solid var(--turf-deep);
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-ink-soft);
}

/* ---------- 运营与联系 ---------- */
.page-about .about-contact {
  display: grid;
  gap: 20px;
  margin-top: 18px;
}

.page-about .about-contact__lead {
  margin: 0 0 14px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--about-ink-soft);
}

.page-about .about-contact__list {
  margin: 0;
  padding: 0;
  border-top: var(--line) solid var(--ink);
}

.page-about .about-contact__row {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: var(--line) solid var(--paper);
}

.page-about .about-contact__row dt {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-about .about-contact__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-about .about-contact__row dd a {
  color: var(--turf);
  text-decoration: none;
  border-bottom: 2px solid var(--turf);
}

.page-about .about-contact__row dd a:hover {
  color: var(--red);
  border-color: var(--red);
}

/* ---------- 断点 ---------- */
@media (min-width: 560px) {
  .page-about .about-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-tiles__row {
    grid-template-columns: 108px minmax(0, 1fr);
    align-items: center;
    gap: 14px;
  }

  .page-about .about-tiles__row .about-tiles__text {
    grid-column: 2;
  }

  .page-about .about-tiles__row .about-tiles__link {
    grid-column: 2;
  }
}

@media (min-width: 760px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
  }

  .page-about .about-hero__stamp {
    display: block;
  }

  .page-about .about-facts {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-crews__row {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 18px;
  }

  .page-about .about-crews__no {
    font-size: 34px;
  }

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

  .page-about .about-seasons {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .about-contact {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 28px;
  }
}

@media (min-width: 900px) {
  .page-about .about-body {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h-compact) + 26px);
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-rail__link {
    border: 0;
    border-left: 3px solid var(--paper);
    background: transparent;
    white-space: normal;
    padding: 8px 10px;
  }

  .page-about .about-rail__link:hover {
    background: var(--paper);
    transform: translateX(4px);
  }

  .page-about .about-rail__link.is-active {
    background: var(--volt);
    border-left-color: var(--ink);
    box-shadow: none;
    transform: translateX(4px);
  }

  .page-about .about-rail__foot {
    display: block;
  }

  .page-about .about-flow {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: clamp(22px, 3vw, 36px);
    align-items: start;
  }

  .page-about .about-flow__aside {
    margin-top: 8px;
    gap: 18px;
  }

  .page-about .cycle {
    width: min(200px, 78%);
  }

  .page-about .about-partner {
    grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
    gap: clamp(22px, 3vw, 36px);
    align-items: start;
  }

  .page-about .about-partner .about-shot {
    margin-top: 0;
  }

  .page-about .about-tiles__row {
    grid-template-columns: 120px minmax(0, 1fr) auto;
  }

  .page-about .about-tiles__row .about-tiles__text {
    grid-column: 2;
  }

  .page-about .about-tiles__row .about-tiles__link {
    grid-column: 3;
    justify-self: end;
  }
}

@media (min-width: 1200px) {
  .page-about .about-sec__body {
    max-width: 68ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .flow__panel,
  .page-about .about-rail__link,
  .page-about .about-tiles__link,
  .page-about .flow__tab {
    animation: none !important;
    transition: none !important;
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link.is-active {
    transform: none;
  }
}
<<<END>>>