.page-about {
  --about-cut: 22px;
  --about-cut-sm: 16px;
  --about-soft: rgba(245, 243, 238, 0.78);
}

.page-about .breadcrumb {
  padding-top: clamp(16px, 3vw, 28px);
}

.page-about .about-h2 {
  margin: 12px 0 0;
  font-size: clamp(26px, 3.6vw, 44px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-about .about-section-head {
  max-width: 46em;
  margin-bottom: clamp(24px, 3.5vw, 40px);
}

.page-about .about-section-head__note {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-inline-link {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan);
  padding-bottom: 1px;
  transition: color 160ms var(--ease-out);
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
  padding-block: clamp(18px, 3vw, 34px) clamp(40px, 6vw, 84px);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-size: clamp(34px, 7vw, 76px);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 30em;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.8;
  color: var(--about-soft);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__media {
  margin: 0;
  position: relative;
  background: var(--charcoal-800);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

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

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: clamp(24px, 3vw, 40px);
  }
  .page-about .about-hero__copy {
    grid-column: 1 / span 7;
  }
  .page-about .about-hero__media {
    grid-column: 8 / span 5;
    margin-bottom: 12px;
  }
}

/* ---------- 章节索引条 ---------- */
.page-about .about-toc {
  border-block: 1px solid var(--line);
  background: var(--ink-900);
  padding-block: 10px;
}

.page-about .about-toc__inner {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-toc__inner::-webkit-scrollbar {
  display: none;
}

.page-about .about-toc__label {
  flex: none;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-toc__link {
  flex: none;
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  font-size: 13px;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid var(--line);
  transition: border-color 160ms var(--ease-out), color 160ms var(--ease-out);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 内容起点 ---------- */
.page-about .about-why {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  padding-block: clamp(44px, 7vw, 96px);
}

.page-about .about-why__body p {
  margin: 0 0 16px;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-soft);
}

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

.page-about .about-quote {
  margin: 0;
  align-self: start;
  padding: 26px 22px 26px 24px;
  background: var(--paper);
  color: var(--ink-950);
  border-left: 4px solid var(--milan-red);
  font-size: clamp(18px, 2.1vw, 22px);
  font-weight: 700;
  line-height: 1.65;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

@media (min-width: 960px) {
  .page-about .about-why {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }
  .page-about .about-quote {
    margin-top: 28px;
  }
}

/* ---------- 三条主线 ---------- */
.page-about .about-lines {
  padding-block: clamp(44px, 7vw, 92px);
  background:
    linear-gradient(180deg, rgba(200, 16, 46, 0.12), rgba(10, 11, 13, 0) 46%),
    var(--ink-900);
  border-block: 1px solid var(--line);
}

.page-about .about-lines__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .line-card {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--charcoal-800);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  transition: transform 200ms var(--ease-out), border-color 200ms var(--ease-out);
}

.page-about .line-card:hover {
  transform: translateY(-2px);
  border-color: rgba(34, 211, 238, 0.5);
}

.page-about .line-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--milan-red);
  margin-bottom: 12px;
}

.page-about .line-card__title {
  margin: 0;
  font-size: 20px;
  font-weight: 900;
  line-height: 1.35;
}

.page-about .line-card__title a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, 0.55);
  transition: color 160ms var(--ease-out);
}

.page-about .line-card__title a:hover,
.page-about .line-card__title a:focus-visible {
  color: var(--cyan);
}

.page-about .line-card__text {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-lines__foot {
  margin: 26px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

@media (min-width: 900px) {
  .page-about .about-lines__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    align-items: start;
  }
  .page-about .line-card:nth-child(2) {
    margin-top: 34px;
  }
  .page-about .line-card:nth-child(3) {
    margin-top: 68px;
  }
  .page-about .about-lines__foot {
    margin-top: 44px;
  }
}

/* ---------- 六维自评 ---------- */
.page-about .about-six {
  padding-block: clamp(44px, 7vw, 92px);
}

.page-about .about-six__band {
  margin: 0 0 clamp(20px, 3vw, 32px);
  background: var(--charcoal-800);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

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

.page-about .about-six__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .six-card {
  background: var(--charcoal-800);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  transition: border-color 200ms var(--ease-out), background 200ms var(--ease-out);
}

.page-about .six-card:hover {
  border-color: rgba(34, 211, 238, 0.45);
}

.page-about .six-card[open] {
  border-color: rgba(232, 255, 58, 0.55);
  background: var(--ink-900);
}

.page-about .six-card__head {
  position: relative;
  display: block;
  min-height: 44px;
  padding: 18px 50px 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-about .six-card__head::-webkit-details-marker {
  display: none;
}

.page-about .six-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--milan-red);
  margin-bottom: 10px;
}

.page-about .six-card__name {
  display: block;
  font-size: 17px;
  font-weight: 900;
  color: var(--text);
}

.page-about .six-card__q {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .six-card__head::after {
  content: "+";
  position: absolute;
  top: 16px;
  right: 16px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  color: var(--fluoro);
  border: 1px solid rgba(232, 255, 58, 0.45);
  transition: border-color 160ms var(--ease-out);
}

.page-about .six-card[open] .six-card__head::after {
  content: "−";
  border-color: rgba(232, 255, 58, 0.9);
}

.page-about .six-card__body {
  padding: 0 18px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .six-card__body p {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.page-about .about-six__foot {
  margin: 24px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

@media (min-width: 640px) {
  .page-about .about-six__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-about .about-six__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

/* ---------- 赛季档案 ---------- */
.page-about .about-archive {
  padding-block: clamp(44px, 7vw, 92px);
  background: var(--ink-900);
  border-block: 1px solid var(--line);
}

.page-about .about-archive__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
}

.page-about .archive-axis {
  list-style: none;
  margin: 0;
  padding: 4px 0 4px 24px;
  position: relative;
}

.page-about .archive-axis::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--milan-red), rgba(200, 16, 46, 0.14));
}

.page-about .archive-node {
  position: relative;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 8px 11px 2px;
  border-bottom: 1px dashed rgba(233, 227, 214, 0.08);
  transition: background 160ms var(--ease-out);
}

.page-about .archive-node::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 21px;
  width: 12px;
  height: 2px;
  background: var(--milan-red);
}

.page-about .archive-node__year {
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text);
}

.page-about .archive-node__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-align: right;
}

.page-about .archive-node:not(.archive-node--current):hover {
  background: rgba(34, 211, 238, 0.06);
}

.page-about .archive-node:not(.archive-node--current):hover .archive-node__year {
  color: var(--cyan);
}

.page-about .archive-node--current .archive-node__year {
  color: var(--fluoro);
}

.page-about .archive-node--current::before {
  background: var(--fluoro);
  box-shadow: 0 0 0 3px rgba(232, 255, 58, 0.16);
}

.page-about .archive-node--current .archive-node__meta {
  color: rgba(232, 255, 58, 0.75);
}

.page-about .about-archive__media {
  margin: 0;
  background: var(--charcoal-800);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

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

@media (min-width: 960px) {
  .page-about .about-archive__layout {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }
  .page-about .about-archive__media {
    margin-top: 16px;
  }
}

/* ---------- 编辑流程 ---------- */
.page-about .about-newsroom {
  padding-block: clamp(44px, 7vw, 92px);
}

.page-about .newsroom-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: clamp(24px, 3.5vw, 36px);
}

.page-about .newsroom-stat {
  padding: 14px 14px 16px;
  background: var(--charcoal-800);
  border-left: 2px solid var(--milan-red);
}

.page-about .newsroom-stat__num {
  display: block;
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text);
}

.page-about .newsroom-stat__label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
}

.page-about .newsroom-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-about .newsroom-step {
  position: relative;
  padding: 20px 18px 22px;
  background: linear-gradient(180deg, rgba(200, 16, 46, 0.1), rgba(29, 33, 39, 0.9));
  border-top: 2px solid var(--milan-red);
  counter-increment: step;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .newsroom-step::before {
  content: "0" counter(step);
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .newsroom-step__title {
  margin: 0;
  font-size: 18px;
  font-weight: 900;
  color: var(--text);
}

.page-about .newsroom-step__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

@media (min-width: 760px) {
  .page-about .newsroom-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .newsroom-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

/* ---------- 合作与共建 ---------- */
.page-about .about-partner {
  padding-block: clamp(44px, 7vw, 92px);
  background:
    linear-gradient(180deg, rgba(34, 211, 238, 0.07), rgba(10, 11, 13, 0) 55%),
    var(--ink-900);
  border-top: 1px solid var(--line);
}

.page-about .partner-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .partner-card {
  position: relative;
  padding: 22px 20px 26px;
  background: var(--charcoal-800);
  border: 1px solid var(--line);
}

.page-about .partner-card::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 18px;
  height: 18px;
  background: linear-gradient(135deg, rgba(10, 11, 13, 0) 50%, var(--milan-red) 50%);
}

.page-about .partner-card__title {
  margin: 0;
  font-size: 18px;
  font-weight: 900;
  color: var(--text);
}

.page-about .partner-card__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .partner-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 26px;
  padding: 20px 20px 22px;
  border: 1px solid rgba(232, 255, 58, 0.35);
  background: rgba(232, 255, 58, 0.04);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-about .partner-cta__line {
  margin: 0;
  max-width: 42em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
  word-break: break-word;
}

@media (min-width: 860px) {
  .page-about .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 交互与无障碍 ---------- */
.page-about a:focus-visible,
.page-about summary:focus-visible {
  outline: 2px solid var(--fluoro);
  outline-offset: 3px;
}

.page-about .six-card__head:focus-visible {
  outline-offset: -4px;
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  .page-about .line-card:hover {
    transform: none;
  }
}
<<<END>>>