.page-about {
  --about-y: clamp(56px, 9vw, 120px);
  overflow-x: clip;
}

.page-about .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 36px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: end;
  padding-bottom: clamp(8px, 2vw, 20px);
}

.page-about .hero-copy {
  min-width: 0;
}

.page-about .page-title {
  margin: 12px 0 0;
  font-size: clamp(36px, 7.6vw, 88px);
  font-weight: 200;
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--cream);
}

.page-about .page-lead {
  margin: clamp(18px, 3vw, 28px) 0 0;
  max-width: 62ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.75;
  color: var(--mist);
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3.4vw, 32px);
}

.page-about .mission-side .hero-actions {
  margin-top: 4px;
}

.page-about .hero-board {
  border: var(--bw) solid var(--lift);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(199, 255, 61, .12), transparent 62%),
    linear-gradient(165deg, var(--deep), var(--ink) 72%);
  box-shadow: var(--shadow-neon);
  padding: clamp(20px, 3.4vw, 32px);
}

.page-about .board-k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--sand);
}

.page-about .board-num {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(64px, 15vw, 120px);
  font-weight: 700;
  line-height: .9;
  letter-spacing: -.04em;
  font-variant-numeric: tabular-nums;
  color: var(--neon);
}

.page-about .board-pulse {
  display: block;
  width: 100%;
  height: auto;
  margin: 14px 0 18px;
}

.page-about .board-pulse polyline {
  fill: none;
  stroke: var(--neon);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 900;
  stroke-dashoffset: 900;
  animation: about-trace 3.6s var(--ease) infinite;
}

@keyframes about-trace {
  0% { stroke-dashoffset: 900; }
  55% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: 0; }
}

.page-about .board-legend {
  list-style: none;
  margin: 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--lift);
  display: grid;
  gap: 10px;
}

.page-about .board-legend li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cream);
}

.page-about .board-dot {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--mist);
}

.page-about .board-dot.dot-live {
  background: var(--neon);
  animation: about-pulse 2.4s infinite;
}

.page-about .board-dot.dot-flare {
  background: var(--flare);
}

@keyframes about-pulse {
  0% { box-shadow: 0 0 0 0 rgba(199, 255, 61, .55); }
  70% { box-shadow: 0 0 0 10px rgba(199, 255, 61, 0); }
  100% { box-shadow: 0 0 0 0 rgba(199, 255, 61, 0); }
}

/* ---------- 页面索引 ---------- */
.page-about .about-index {
  margin-top: clamp(30px, 5vw, 54px);
  border-top: var(--bw) solid var(--lift);
  border-bottom: var(--bw) solid var(--lift);
}

.page-about .about-index ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-about .about-index a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 14px 12px;
  color: var(--cream);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid var(--lift);
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  color: var(--neon);
  background: var(--deep);
}

.page-about .about-index .num {
  font-size: 11px;
  color: var(--flare);
}

/* ---------- 通用区块 ---------- */
.page-about .about-sec {
  margin-top: var(--about-y);
}

.page-about .section-head {
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-about .section-title {
  margin: 10px 0 0;
  font-size: clamp(26px, 4.6vw, 50px);
  font-weight: 200;
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-about .section-note {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-figure {
  margin: 0;
  border: var(--bw) solid var(--lift);
  background: var(--deep);
  box-shadow: var(--shadow-neon);
}

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

.page-about .fig-16x9 img { aspect-ratio: 16 / 9; }
.page-about .fig-3x4 img { aspect-ratio: 3 / 4; }
.page-about .fig-7x4 img { aspect-ratio: 7 / 4; }

.page-about .fig-cap {
  padding: 12px 14px;
  border-top: 1px solid var(--lift);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--sand);
}

/* ---------- 主张 ---------- */
.page-about .mission-grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .mission-lead p {
  margin: 0 0 1.2em;
  max-width: 68ch;
  font-size: clamp(17px, 1.8vw, 21px);
  line-height: 1.75;
  color: var(--cream);
}

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

.page-about .mission-side {
  display: grid;
  gap: 16px;
  align-content: start;
  padding-left: 18px;
  border-left: var(--bw) solid var(--flare);
}

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

/* ---------- 斜切转场带 ---------- */
.page-about .about-band {
  margin: var(--about-y) 0;
  padding: clamp(18px, 3vw, 28px) clamp(20px, 4vw, 44px);
  background: var(--neon);
  color: var(--ink);
  transform: skewY(-2deg);
  box-shadow: var(--shadow-flare);
}

.page-about .about-band p {
  margin: 0;
  transform: skewY(2deg);
  font-family: var(--font-mono);
  font-size: clamp(13px, 2.1vw, 19px);
  font-weight: 600;
  letter-spacing: .05em;
}

/* ---------- 时间线 ---------- */
.page-about .season-line {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .season-node {
  position: relative;
  padding: 0 0 clamp(28px, 4vw, 48px) clamp(24px, 4vw, 44px);
  border-left: var(--bw) solid var(--lift);
}

.page-about .season-node:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .season-dot {
  position: absolute;
  left: -9px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px var(--ink);
}

.page-about .season-node.is-current .season-dot {
  background: var(--neon);
  animation: about-pulse 2.4s infinite;
}

.page-about .season-k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .season-node.is-current .season-k {
  color: var(--neon);
}

.page-about .season-t {
  margin: 8px 0 0;
  font-size: clamp(18px, 2.4vw, 26px);
  font-weight: 400;
  line-height: 1.3;
  color: var(--cream);
}

.page-about .season-d {
  margin: 10px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 复核流程 ---------- */
.page-about .process-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .check-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-about .check-step {
  padding: clamp(18px, 2.6vw, 26px);
  border: var(--bw) solid var(--lift);
  border-left: 6px solid var(--flare);
  background: linear-gradient(90deg, rgba(255, 78, 32, .1), rgba(6, 18, 14, 0) 72%);
}

.page-about .check-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 34px);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--flare);
}

.page-about .check-t {
  margin: 12px 0 0;
  font-size: 19px;
  font-weight: 500;
  color: var(--cream);
}

.page-about .check-d {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 查询能力 ---------- */
.page-about .line-list {
  border-top: var(--bw) solid var(--lift);
}

.page-about .line-item {
  display: grid;
  gap: 10px;
  padding: clamp(20px, 3vw, 30px) 0;
  border-bottom: 1px solid var(--lift);
}

.page-about .line-k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--flare);
}

.page-about .line-t {
  margin: 0;
  font-size: clamp(20px, 3vw, 30px);
  font-weight: 300;
  line-height: 1.25;
  color: var(--cream);
}

.page-about .line-meta {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--neon);
}

.page-about .line-d {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .lines-tail {
  margin: clamp(22px, 3vw, 32px) 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--cream);
}

.page-about .lines-tail a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .team-stats {
  margin: 0;
  border-top: 1px solid var(--lift);
}

.page-about .stat-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--lift);
}

.page-about .stat-row dt {
  font-size: 14px;
  color: var(--mist);
}

.page-about .stat-row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(20px, 3vw, 28px);
  color: var(--cream);
  font-variant-numeric: tabular-nums;
}

.page-about .stat-row dd .num {
  color: var(--neon);
}

.page-about .team-note {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-about .team-note p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 荣誉与合作 ---------- */
.page-about .honor-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .honor-badge {
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--gold);
  background: linear-gradient(180deg, rgba(181, 138, 43, .16), rgba(6, 18, 14, 0));
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .honor-badge:hover {
  transform: translateY(-4px);
  border-color: var(--neon);
  box-shadow: var(--shadow-neon);
}

.page-about .honor-year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--gold);
}

.page-about .honor-name {
  margin: 12px 0 0;
  font-size: 17px;
  font-weight: 500;
  color: var(--cream);
}

.page-about .honor-note {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .partner-block {
  display: grid;
  gap: clamp(22px, 3.6vw, 40px);
  margin-top: clamp(28px, 4vw, 48px);
}

.page-about .partner-copy h3 {
  margin: 0;
  font-size: clamp(20px, 3vw, 30px);
  font-weight: 300;
  line-height: 1.3;
  color: var(--cream);
}

.page-about .partner-copy p {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .partner-stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 48px);
  margin-top: 22px;
}

.page-about .partner-stat .n {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--neon);
}

.page-about .partner-stat .l {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--sand);
}

/* ---------- 下一步 ---------- */
.page-about .next-inner {
  padding: clamp(26px, 4.5vw, 52px);
  border: var(--bw) solid var(--neon);
  background: linear-gradient(140deg, var(--deep), var(--ink));
  box-shadow: var(--shadow-neon);
}

.page-about .next-inner h2 {
  margin: 0;
  font-size: clamp(24px, 4vw, 42px);
  font-weight: 200;
  line-height: 1.15;
  color: var(--cream);
}

.page-about .next-inner p {
  margin: 16px 0 0;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .about-index ul {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .mission-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  }

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

@media (min-width: 980px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  }

  .page-about .process-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
  }

  .page-about .partner-block {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
  }

  .page-about .line-item {
    grid-template-columns: 64px minmax(0, 1fr) minmax(0, 1.35fr);
    column-gap: clamp(18px, 3vw, 36px);
    align-items: start;
  }

  .page-about .line-k {
    padding-top: 8px;
  }

  .page-about .line-d {
    padding-top: 6px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-index ul {
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .board-pulse polyline {
    animation: none;
    stroke-dashoffset: 0;
  }

  .page-about .board-dot.dot-live,
  .page-about .season-node.is-current .season-dot {
    animation: none;
  }

  .page-about .honor-badge {
    transition: none;
  }

  .page-about .honor-badge:hover {
    transform: none;
  }

  .page-about .about-band {
    transform: none;
  }

  .page-about .about-band p {
    transform: none;
  }
}