.page-about {
  --about-gap: clamp(22px, 3.2vw, 40px);
  background:
    radial-gradient(115% 70% at 8% 0%, rgba(27, 74, 56, 0.9) 0%, rgba(8, 23, 18, 0) 62%),
    var(--deep-ink);
  color: var(--bone-50);
  padding: clamp(18px, 3vw, 34px) 0 clamp(44px, 6vw, 84px);
}

.page-about .about-wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 clamp(14px, 2.6vw, 30px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
}

.page-about .about-rail,
.page-about .about-main {
  min-width: 0;
}

@media (min-width: 980px) {
  .page-about .about-wrap {
    grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
    align-items: start;
  }
  .page-about .about-rail {
    position: sticky;
    top: clamp(84px, 10vh, 116px);
  }
}

/* ---- 左栏：品牌叙事 ---- */
.page-about .about-rail {
  position: relative;
  border: 2px solid var(--pine-700);
  background: linear-gradient(170deg, rgba(15, 43, 33, 0.97) 0%, rgba(8, 23, 18, 0.98) 100%);
  box-shadow: var(--shadow);
  padding: clamp(18px, 2.4vw, 26px) clamp(16px, 2.2vw, 24px) clamp(20px, 2.6vw, 28px);
}

.page-about .about-rail::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: linear-gradient(180deg, var(--amber-500), var(--copper-600) 42%, var(--pine-700));
}

.page-about .about-rail .bl-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--amber-500);
}

.page-about .about-rail h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(29px, 4.2vw, 42px);
  line-height: 1.16;
  letter-spacing: 0.01em;
  margin: 8px 0 14px;
  color: var(--bone-50);
}

.page-about .about-rail h1 span {
  display: block;
  color: var(--amber-200);
}

.page-about .about-rail__lede {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--sage-300);
  margin: 0 0 18px;
}

.page-about .about-rail__acts {
  display: grid;
  gap: 10px;
}

.page-about .about-rail__acts .bl-btn {
  text-align: center;
}

.page-about .about-rail__figure {
  margin: 20px 0 0;
  border: 2px solid var(--pine-700);
  background: var(--pine-900);
  overflow: hidden;
}

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

.page-about .about-rail__figure figcaption {
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.7;
  color: rgba(156, 181, 168, 0.9);
  padding: 9px 11px;
  border-top: 1px solid rgba(59, 107, 85, 0.7);
}

.page-about .about-gauge {
  margin-top: 18px;
  display: flex;
  align-items: flex-end;
  gap: 10px;
}

.page-about .about-gauge__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--sage-300);
  white-space: nowrap;
}

.page-about .about-gauge__bar {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-items: end;
  height: 20px;
  min-width: 0;
}

.page-about .about-gauge__bar i {
  display: block;
  height: 10px;
  margin-right: 1px;
  background: rgba(59, 107, 85, 0.6);
}

.page-about .about-gauge__bar i:nth-child(3n + 1) {
  height: 18px;
  background: var(--copper-600);
}

/* ---- 右栏容器与面包屑 ---- */
.page-about .about-main {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--moss-500);
}

.page-about .about-crumb a {
  color: var(--sage-300);
  text-decoration: none;
  border-bottom: 1px dashed var(--moss-500);
  padding-bottom: 1px;
}

.page-about .about-crumb a:hover {
  color: var(--amber-200);
  border-bottom-color: var(--amber-500);
}

.page-about .about-crumb__sep {
  color: var(--pine-700);
}

/* ---- 章节外壳 ---- */
.page-about .about-block {
  position: relative;
  border: 2px solid var(--pine-700);
  background: rgba(15, 43, 33, 0.72);
  padding: clamp(20px, 3vw, 36px);
  box-shadow: var(--shadow);
}

.page-about .about-block--paper {
  background: var(--paper-100);
  border-color: var(--copper-600);
}

.page-about .about-block--pine {
  background: linear-gradient(150deg, var(--pine-900) 0%, rgba(8, 23, 18, 0.96) 100%);
  border-color: var(--moss-500);
}

.page-about .about-block .bl-kicker {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--amber-500);
}

.page-about .about-block--paper .bl-kicker {
  color: var(--copper-600);
}

.page-about .about-block h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 2.9vw, 34px);
  line-height: 1.3;
  margin: 0 0 16px;
  color: var(--bone-50);
}

.page-about .about-block h2::after {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  margin-top: 14px;
  background: var(--copper-600);
}

.page-about .about-block--paper h2 {
  color: var(--ink-900);
}

.page-about .about-block--paper h2::after {
  background: var(--amber-500);
}

.page-about .about-block p {
  font-family: var(--font-body);
  font-size: clamp(15px, 1.05vw, 16.5px);
  line-height: 1.86;
  color: rgba(255, 249, 236, 0.84);
  margin: 0 0 14px;
}

.page-about .about-block--paper p {
  color: rgba(22, 32, 27, 0.86);
}

/* ---- 三条要点 ---- */
.page-about .about-points {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-points li {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid rgba(59, 107, 85, 0.7);
  background: rgba(8, 23, 18, 0.5);
}

.page-about .about-points__n {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ripple-400);
}

.page-about .about-points strong {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--amber-200);
  white-space: nowrap;
}

.page-about .about-points span:last-child {
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(255, 249, 236, 0.78);
}

@media (max-width: 560px) {
  .page-about .about-points li {
    grid-template-columns: auto minmax(0, 1fr);
  }
  .page-about .about-points span:last-child {
    grid-column: 1 / -1;
  }
}

/* ---- 内容分类 ---- */
.page-about .about-cats {
  margin: 20px 0 4px;
  display: grid;
  gap: 10px;
}

.page-about .about-cat {
  border: 2px solid rgba(22, 32, 27, 0.16);
  background: var(--bone-50);
  box-shadow: 4px 4px 0 rgba(169, 103, 46, 0.28);
}

.page-about .about-cat > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 13px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--ink-900);
}

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

.page-about .about-cat > summary::after {
  content: "＋";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--copper-600);
}

.page-about .about-cat[open] > summary::after {
  content: "－";
  color: var(--amber-500);
}

.page-about .about-cat[open] > summary {
  border-bottom: 2px solid rgba(169, 103, 46, 0.3);
}

.page-about .about-cat__n {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--copper-600);
}

.page-about .about-cat__name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-900);
}

.page-about .about-cat__hint {
  font-family: var(--font-body);
  font-size: 12.5px;
  font-weight: 400;
  color: rgba(22, 32, 27, 0.55);
}

.page-about .about-cat__body {
  padding: 14px 16px 16px;
}

.page-about .about-block--paper .about-cat__body p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.82;
  color: rgba(22, 32, 27, 0.82);
}

/* ---- 图片 ---- */
.page-about .about-figure {
  margin: 22px 0 0;
  border: 2px solid var(--copper-600);
  background: var(--pine-900);
  box-shadow: var(--shadow);
  overflow: hidden;
}

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

.page-about .about-figure figcaption {
  font-family: var(--font-body);
  font-size: 12.5px;
  line-height: 1.7;
  padding: 10px 14px;
  color: rgba(156, 181, 168, 0.95);
  border-top: 1px solid rgba(169, 103, 46, 0.45);
  background: var(--pine-900);
}

/* ---- 赛季刻度 ---- */
.page-about .about-scale {
  margin: 22px 0 6px;
  padding: 16px;
  border: 2px solid var(--pine-700);
  background: rgba(8, 23, 18, 0.55);
}

.page-about .about-scale__cap {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--moss-500);
}

.page-about .about-scale__cap:not(:first-child) {
  margin-top: 20px;
}

.page-about .about-weeks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 0;
}

.page-about .about-weeks li {
  position: relative;
  padding-top: 24px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: rgba(156, 181, 168, 0.7);
}

.page-about .about-weeks li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 15px;
  background: rgba(59, 107, 85, 0.9);
}

.page-about .about-weeks li:nth-child(odd)::before {
  height: 9px;
}

.page-about .about-weeks li:nth-child(1)::before,
.page-about .about-weeks li:nth-child(12)::before {
  width: 2px;
  height: 19px;
  background: var(--amber-500);
}

.page-about .about-ranks {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .about-ranks__cap {
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--sage-300);
  white-space: nowrap;
}

.page-about .about-ranks__dots {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2px;
}

.page-about .about-ranks__dots span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 2px solid var(--moss-500);
  background: rgba(59, 107, 85, 0.35);
}

.page-about .about-ranks__dots span:first-child {
  background: var(--moss-500);
}

.page-about .about-ranks__dots span:nth-child(4) {
  border-color: var(--ripple-400);
  background: var(--ripple-400);
}

.page-about .about-ranks__dots span:last-child {
  background: var(--amber-500);
  border-color: var(--amber-200);
  box-shadow: 0 0 0 4px rgba(217, 154, 61, 0.16);
}

/* ---- 赛季阶段 ---- */
.page-about .about-stages {
  margin-top: 22px;
}

.page-about .about-stage {
  position: relative;
  border-left: 2px solid var(--pine-700);
  padding-left: 20px;
}

.page-about .about-stage:last-child {
  border-left-color: transparent;
}

.page-about .about-stage > summary {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  padding: 10px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-stage > summary::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 18px;
  width: 10px;
  height: 10px;
  transform: rotate(45deg);
  background: var(--pine-700);
  border: 1px solid var(--moss-500);
}

.page-about .about-stage[open] > summary::before {
  background: var(--amber-500);
  border-color: var(--amber-200);
  box-shadow: 0 0 0 4px rgba(217, 154, 61, 0.16);
}

.page-about .about-stage > summary::after {
  content: "＋";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--moss-500);
}

.page-about .about-stage[open] > summary::after {
  content: "－";
  color: var(--amber-500);
}

.page-about .about-stage__wk {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--amber-500);
}

.page-about .about-stage__name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--bone-50);
}

.page-about .about-block .about-stage__body {
  padding: 0 0 16px;
}

.page-about .about-block .about-stage__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: rgba(255, 249, 236, 0.78);
}

/* ---- 合作与覆盖 ---- */
.page-about .about-community {
  margin-top: 20px;
  display: grid;
  gap: 18px;
}

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

.page-about .about-map {
  display: grid;
  grid-template-columns: repeat(11, minmax(0, 1fr));
  gap: 6px;
  padding: 16px;
  border: 2px solid var(--pine-700);
  background: rgba(8, 23, 18, 0.55);
}

.page-about .about-map span {
  display: block;
  aspect-ratio: 1 / 1;
  border-radius: 2px;
  background: rgba(87, 167, 163, 0.2);
}

.page-about .about-map span.is-lit {
  background: rgba(87, 167, 163, 0.85);
  box-shadow: 0 0 0 1px rgba(87, 167, 163, 0.35);
}

/* ---- 服务原则 ---- */
.page-about .about-rules {
  margin-top: 20px;
  display: grid;
  gap: 12px;
}

@media (min-width: 720px) {
  .page-about .about-rules {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .about-rule {
  border-left: 4px solid var(--amber-500);
  border-top: 1px solid rgba(59, 107, 85, 0.55);
  background: rgba(8, 23, 18, 0.55);
  padding: 14px 16px 16px;
}

.page-about .about-rule h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--amber-200);
  margin: 0 0 8px;
}

.page-about .about-block .about-rule p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(255, 249, 236, 0.78);
}

.page-about .about-block .about-note {
  margin: 18px 0 0;
  padding: 14px 16px;
  border: 1px dashed var(--moss-500);
  font-size: 14px;
  line-height: 1.85;
  color: rgba(255, 249, 236, 0.76);
}

.page-about .about-note a {
  color: var(--amber-200);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-note a:hover {
  color: var(--bone-50);
}

/* ---- 收束 ---- */
.page-about .about-cta {
  display: grid;
  gap: 14px;
  padding: clamp(18px, 2.6vw, 26px);
  border: 2px solid var(--copper-600);
  background: linear-gradient(120deg, rgba(217, 154, 61, 0.16), rgba(8, 23, 18, 0.3));
  box-shadow: var(--shadow);
}

@media (min-width: 640px) {
  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

.page-about .about-cta p {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.6;
  color: var(--bone-50);
}

.page-about .about-cta__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-ranks__dots span:last-child {
    box-shadow: none;
  }
  .page-about .about-stage[open] > summary::before {
    box-shadow: none;
  }
}
<<<END>>>