.page-about {
  --scale-col: 56px;
  --scale-gap: 18px;
}

@media (min-width: 900px) {
  .page-about {
    --scale-col: 172px;
    --scale-gap: 48px;
  }
}

/* ---------- 面包屑 ---------- */
.page-about .crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--mist);
  margin: 0 0 20px;
}

.page-about .crumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-about .crumb-now {
  color: var(--paper);
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  padding-top: clamp(24px, 4.5vw, 52px);
}

.page-about .hero-frame {
  position: relative;
  display: grid;
  gap: 26px;
  padding: 46px 22px 26px;
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  overflow: hidden;
  background:
    radial-gradient(120% 92% at 88% 0%, rgba(47, 227, 168, 0.1), transparent 58%),
    linear-gradient(165deg, var(--ink-800), var(--ink-900) 74%);
}

.page-about .hero-frame::before {
  content: "";
  position: absolute;
  inset: 19px 22px auto 22px;
  height: 7px;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 15px);
  pointer-events: none;
}

@media (min-width: 900px) {
  .page-about .hero-frame {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: center;
    gap: 44px;
    padding: 58px 42px 42px;
  }
}

.page-about .hero-figure {
  margin: 0;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-850);
}

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

.page-about .hero-copy h1 {
  margin: 10px 0 16px;
  font-family: var(--font-title);
  font-size: clamp(29px, 5.2vw, 46px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .hero-copy .lead {
  margin: 0 0 24px;
  max-width: 46ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .hero-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
  gap: 12px;
  margin: 0 0 24px;
}

.page-about .hero-metrics .metric {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(10, 22, 36, 0.55);
}

.page-about .hero-metrics .metric-value {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 24px;
  font-weight: 800;
  line-height: 1.15;
  color: var(--neon);
}

.page-about .hero-metrics .metric-value--amber {
  color: var(--amber);
}

.page-about .hero-metrics .metric-label {
  font-size: 13px;
  color: var(--mist);
}

.page-about .hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 纵向刻度尺骨架 ---------- */
.page-about .about-scale {
  padding: clamp(34px, 6vw, 64px) 0 0;
}

.page-about .about-scale--tail {
  padding-top: clamp(8px, 2vw, 20px);
}

.page-about .scale-row {
  position: relative;
  display: grid;
  grid-template-columns: var(--scale-col) minmax(0, 1fr);
  gap: var(--scale-gap);
  padding: 32px 0;
}

@media (min-width: 900px) {
  .page-about .scale-row {
    padding: 56px 0;
  }
}

.page-about .scale-row::before {
  content: "";
  position: absolute;
  left: calc(var(--scale-col) / 2);
  top: 0;
  bottom: 0;
  width: 1px;
  transform: translateX(-50%);
  background: var(--line);
  pointer-events: none;
}

.page-about .scale-row:last-child::before {
  bottom: 54%;
}

.page-about .scale-mark {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding-top: 6px;
}

.page-about .scale-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.1em;
  line-height: 1;
  color: var(--mist);
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  padding: 5px 9px;
}

.page-about .scale-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--line);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .scale-row:hover .scale-dot {
  border-color: var(--neon-soft);
  box-shadow: 0 0 12px rgba(123, 242, 206, 0.5);
}

.page-about .scale-row--now .scale-dot {
  background: var(--neon);
  border-color: var(--neon);
  box-shadow: 0 0 14px rgba(47, 227, 168, 0.6);
}

.page-about .scale-row--now .scale-num {
  color: var(--neon);
  border-color: rgba(47, 227, 168, 0.45);
}

.page-about .scale-body {
  min-width: 0;
  max-width: 76ch;
}

.page-about .scale-body h2 {
  margin: 0 0 14px;
  font-family: var(--font-title);
  font-size: clamp(21px, 3.1vw, 29px);
  font-weight: 800;
  line-height: 1.32;
  color: var(--paper);
}

.page-about .scale-body > p {
  margin: 0 0 18px;
  max-width: 60ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 服务人群 ---------- */
.page-about .who-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 22px;
}

@media (min-width: 700px) {
  .page-about .who-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .who {
  padding: 20px 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--ink-850);
}

.page-about .who h3 {
  margin: 12px 0 8px;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.45;
  color: var(--paper);
}

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

/* ---------- 数据流转 ---------- */
.page-about .flow-figure {
  margin: 26px 0;
  padding: 20px 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--ink-850);
}

.page-about .flow {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .flow text {
  text-anchor: middle;
  font-family: var(--font-text);
}

.page-about .flow-t {
  fill: var(--paper);
  font-size: 15px;
  font-weight: 700;
}

.page-about .flow-t--live {
  fill: var(--neon);
}

.page-about .flow-s {
  fill: var(--mist);
  font-size: 11.5px;
}

.page-about .flow-figure figcaption {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 覆盖范围筛选 ---------- */
.page-about .cover {
  margin-top: 26px;
}

.page-about .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
}

.page-about .filter-btn {
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  color: var(--mist);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  padding: 7px 15px;
  cursor: pointer;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .filter-btn:hover {
  color: var(--paper);
  border-color: var(--mist);
}

.page-about .filter-btn[aria-pressed="true"] {
  color: var(--ink-900);
  background: var(--neon);
  border-color: var(--neon);
}

.page-about .filter-count {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  color: var(--mist);
  margin-left: 4px;
}

.page-about .cover-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

@media (min-width: 700px) {
  .page-about .cover-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .cover-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-850);
}

.page-about .cover-item[hidden] {
  display: none;
}

.page-about .cover-dot {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  margin-top: 6px;
  border-radius: 2px;
  transform: rotate(45deg);
  background: var(--mist);
}

.page-about .cover-item[data-filter-item~="league"] .cover-dot {
  background: var(--neon);
}

.page-about .cover-item[data-filter-item~="cup"] .cover-dot {
  background: var(--amber);
}

.page-about .cover-item[data-filter-item~="cross"] .cover-dot {
  background: var(--clay);
}

.page-about .cover-item[data-filter-item~="youth"] .cover-dot {
  background: var(--moss);
}

.page-about .cover-item h3 {
  margin: 0 0 5px;
  font-size: 15px;
  font-weight: 800;
  line-height: 1.45;
  color: var(--paper);
}

.page-about .cover-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 版本台阶 ---------- */
.page-about .stage-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .stage {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-850);
}

.page-about .stage:nth-child(1) {
  border-left-color: var(--moss);
}

.page-about .stage:nth-child(2) {
  border-left-color: var(--clay);
}

.page-about .stage:nth-child(3) {
  border-left-color: var(--amber);
}

.page-about .stage:nth-child(4) {
  border-left-color: var(--neon-soft);
}

.page-about .stage:nth-child(5) {
  border-left-color: var(--neon);
}

.page-about .stage-idx {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 16px;
  font-weight: 800;
  color: var(--mist);
  padding-top: 2px;
}

.page-about .stage h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--paper);
}

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

/* ---------- 团队 ---------- */
.page-about .team-figure {
  margin: 24px 0;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-850);
}

.page-about .team-figure img,
.page-about .eco-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .team-roles {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 10px;
  margin: 22px 0 18px;
  padding: 0;
}

.page-about .team-roles li {
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-800);
  font-size: 14px;
  color: var(--mist);
}

.page-about .team-roles b {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 20px;
  font-weight: 800;
  color: var(--neon);
  margin-right: 6px;
}

/* ---------- 荣誉带 ---------- */
.page-about .honor-section {
  padding-top: clamp(30px, 5vw, 56px);
}

.page-about .honor-band {
  padding: 34px 22px 24px;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: linear-gradient(112deg, rgba(110, 139, 90, 0.94), rgba(194, 112, 79, 0.92) 52%, rgba(242, 161, 59, 0.9));
}

@media (min-width: 900px) {
  .page-about .honor-band {
    padding: 42px 38px 30px;
  }
}

.page-about .honor-head {
  margin-bottom: 22px;
}

.page-about .honor-head .eyebrow {
  color: rgba(10, 22, 36, 0.75);
}

.page-about .honor-head h2 {
  margin: 8px 0 0;
  font-family: var(--font-title);
  font-size: clamp(20px, 2.8vw, 27px);
  font-weight: 800;
  line-height: 1.32;
  color: #0A1624;
}

.page-about .honor-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(236px, 1fr);
  gap: 14px;
  overflow-x: auto;
  padding-bottom: 10px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-about .honor-track::-webkit-scrollbar {
  height: 6px;
}

.page-about .honor-track::-webkit-scrollbar-thumb {
  background: rgba(10, 22, 36, 0.35);
  border-radius: var(--r-pill);
}

.page-about .honor-track::-webkit-scrollbar-track {
  background: transparent;
}

.page-about .honor {
  scroll-snap-align: start;
  padding: 20px 20px 18px;
  border: 1px solid rgba(242, 239, 230, 0.16);
  border-radius: var(--r-lg);
  background: rgba(10, 22, 36, 0.9);
}

.page-about .honor-mark {
  display: block;
  width: 26px;
  height: 4px;
  border-radius: var(--r-pill);
  margin-bottom: 14px;
  background: var(--neon);
}

.page-about .honor:nth-child(2) .honor-mark {
  background: var(--neon-soft);
}

.page-about .honor:nth-child(3) .honor-mark {
  background: var(--amber);
}

.page-about .honor:nth-child(4) .honor-mark {
  background: var(--clay);
}

.page-about .honor h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .honor p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 合作生态 ---------- */
.page-about .eco-figure {
  margin: 24px 0;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-850);
}

.page-about .eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 700px) {
  .page-about .eco-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .eco {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--ink-800);
}

.page-about .eco h3 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .eco p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 后续方向 ---------- */
.page-about .next-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .next-list li {
  position: relative;
  padding-left: 22px;
  font-size: 16px;
  line-height: 1.82;
  color: var(--mist);
}

.page-about .next-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  transform: rotate(45deg);
  background: var(--amber);
}

.page-about .next-list b {
  color: var(--paper);
  font-weight: 800;
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  padding: clamp(36px, 6vw, 72px) 0 clamp(56px, 9vw, 96px);
}

.page-about .cta-card {
  position: relative;
  padding: 32px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  overflow: hidden;
  background:
    radial-gradient(120% 130% at 0% 0%, rgba(47, 227, 168, 0.14), transparent 62%),
    var(--ink-850);
}

@media (min-width: 900px) {
  .page-about .cta-card {
    padding: 48px 46px;
  }
}

.page-about .cta-card h2 {
  margin: 0 0 12px;
  font-family: var(--font-title);
  font-size: clamp(22px, 3.2vw, 31px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .cta-card p {
  margin: 0;
  max-width: 56ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--mist);
}

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

/* ---------- 窄屏保护 ---------- */
@media (max-width: 380px) {
  .page-about .hero-frame {
    padding: 42px 16px 22px;
  }

  .page-about .hero-metrics {
    grid-template-columns: 1fr;
  }

  .page-about .scale-row {
    gap: 12px;
  }

  .page-about .honor-track {
    grid-auto-columns: minmax(210px, 1fr);
  }
}