.page-about {
  --hair: rgba(242, 239, 230, 0.14);
  --hair-strong: rgba(242, 239, 230, 0.24);
  --card-shadow: 5px 5px 0 rgba(0, 0, 0, 0.34);
  padding-bottom: 80px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 34px 0 46px;
  border-bottom: 1px solid var(--hair);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -8%;
  bottom: -140px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(201, 162, 39, 0.18), transparent 66%);
  pointer-events: none;
}

.page-about .about-hero .breadcrumb {
  margin: 0 0 26px;
  padding: 0;
}

.page-about .about-hero .eyebrow {
  display: inline-block;
  margin: 0;
  padding: 5px 12px;
  border: 1px solid var(--line-gold);
  border-radius: var(--radius-pill);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.page-about .about-hero h1 {
  margin: 16px 0 18px;
  max-width: 20em;
  color: var(--chip);
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 36px;
  line-height: 1.24;
  letter-spacing: 0.02em;
}

.page-about .about-hero .lede {
  max-width: 42em;
  margin: 0;
  color: var(--chip);
  font-size: 17px;
  line-height: 1.85;
}

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

/* ---------- 两栏骨架 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 44px;
  padding-top: 44px;
}

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

.page-about .about-section {
  margin-bottom: 66px;
  scroll-margin-top: 96px;
}

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

/* ---------- 章节头 ---------- */
.page-about .sec-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--line-gold);
}

.page-about .sec-index {
  flex: 0 0 auto;
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.page-about .sec-head h2 {
  margin: 0;
  min-width: 0;
  color: var(--chip);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.4;
  letter-spacing: 0.02em;
}

.page-about .about-section .prose {
  max-width: 42em;
  margin: 0 0 24px;
  color: var(--chip);
  font-size: 17px;
  line-height: 1.85;
}

/* ---------- 团队分工 ---------- */
.page-about .crew-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .crew-item {
  padding: 18px 18px 20px;
  border: 2px solid var(--hair-strong);
  background: var(--felt-2);
  box-shadow: var(--card-shadow);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .crew-item:hover {
  transform: translateY(-4px);
  border-color: var(--line-gold-hi);
}

.page-about .crew-no {
  display: block;
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}

.page-about .crew-item h3 {
  margin: 0 0 8px;
  color: var(--chip);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.4;
}

.page-about .crew-item p {
  margin: 0;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.8;
}

.page-about .about-shot {
  margin: 28px 0 0;
}

/* ---------- 评测维度 ---------- */
.page-about .dim-layout {
  display: grid;
  gap: 26px;
  margin-bottom: 26px;
}

.page-about .radar-figure {
  margin: 0;
  padding: 12px 8px 0;
  border: 2px solid var(--hair-strong);
  background: rgba(18, 58, 43, 0.6);
  box-shadow: var(--card-shadow);
}

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

.page-about .radar-grid polygon {
  fill: none;
  stroke: var(--hair);
  stroke-width: 1;
}

.page-about .radar-grid polygon:last-child {
  stroke: rgba(201, 162, 39, 0.5);
  stroke-width: 1.5;
}

.page-about .radar-axes line {
  stroke: var(--hair);
  stroke-width: 1;
}

.page-about .radar-points circle {
  fill: var(--gold);
  stroke: var(--felt);
  stroke-width: 2;
  transition: r var(--dur) var(--ease), fill var(--dur) var(--ease);
}

.page-about .radar-points g:hover circle {
  r: 9;
  fill: var(--gold-lit);
}

.page-about .radar-labels text {
  fill: var(--chip);
  font-family: var(--font-sans);
  font-size: 14px;
}

.page-about .radar-ticks text {
  fill: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-about .radar-figure .media-caption {
  margin: 10px 8px 12px;
  color: var(--mist);
  font-size: 12px;
  line-height: 1.7;
}

.page-about .dim-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .dim-item {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--hair);
}

.page-about .dim-item:first-child {
  padding-top: 0;
}

.page-about .dim-no {
  flex: 0 0 auto;
  padding-top: 3px;
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.page-about .dim-body {
  min-width: 0;
}

.page-about .dim-body h3 {
  margin: 0 0 6px;
  color: var(--chip);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
}

.page-about .dim-body p {
  margin: 0;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.8;
}

.page-about .about-dim-shot {
  margin: 0;
}

/* ---------- 三道复核 ---------- */
.page-about .gate-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 24px;
  border-left: 2px solid var(--line-gold);
}

.page-about .gate-step {
  position: relative;
  padding-bottom: 26px;
}

.page-about .gate-step:last-child {
  padding-bottom: 0;
}

.page-about .gate-step::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--felt);
  border: 2px solid var(--gold);
}

.page-about .gate-no {
  display: block;
  margin-bottom: 6px;
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.page-about .gate-step h3 {
  margin: 0 0 6px;
  color: var(--chip);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
}

.page-about .gate-step p {
  margin: 0;
  max-width: 40em;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.85;
}

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 0 0 32px;
  padding: 0 0 0 22px;
  border-left: 2px solid var(--hair-strong);
}

.page-about .tl-item {
  position: relative;
  padding-bottom: 16px;
}

.page-about .tl-item:last-child {
  padding-bottom: 0;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 18px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--felt);
  border: 2px solid var(--gold);
  z-index: 1;
}

.page-about .tl-trigger {
  display: block;
  width: 100%;
  margin: 0;
  padding: 10px 32px 10px 0;
  border: 0;
  background: none;
  text-align: left;
  color: inherit;
  font: inherit;
  cursor: pointer;
  position: relative;
}

.page-about .tl-trigger::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 10px;
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
  transition: transform var(--dur) var(--ease);
}

.page-about .tl-trigger[aria-expanded="true"]::after {
  content: "–";
}

.page-about .tl-trigger:focus-visible {
  outline: 2px solid var(--gold-lit);
  outline-offset: 3px;
}

.page-about .tl-year {
  display: block;
  color: var(--gold);
  font-size: 20px;
  letter-spacing: 0.08em;
  line-height: 1.2;
}

.page-about .tl-title {
  display: block;
  margin-top: 4px;
  color: var(--chip);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.5;
}

.page-about .tl-panel {
  padding: 2px 0 12px;
}

.page-about .tl-panel p {
  margin: 0;
  max-width: 40em;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.85;
}

.page-about .about-banner {
  margin: 0;
}

/* ---------- 内容规模 ---------- */
.page-about .scale-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .scale-cell {
  padding: 18px;
  border: 2px solid var(--hair-strong);
  background: var(--felt-2);
  box-shadow: var(--card-shadow);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .scale-cell:hover {
  transform: translateY(-4px);
  border-color: var(--line-gold-hi);
}

.page-about .scale-value {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 0 0 10px;
}

.page-about .scale-num {
  color: var(--gold);
  font-size: 36px;
  line-height: 1;
  letter-spacing: 0.04em;
}

.page-about .scale-unit {
  color: var(--mist);
  font-size: 14px;
  line-height: 1;
}

.page-about .scale-cell p {
  margin: 0;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.8;
}

.page-about .scale-foot {
  margin: 26px 0 0;
}

/* ---------- 认可 ---------- */
.page-about .honor-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-about .honor-card {
  padding: 24px;
}

.page-about .honor-card .tag {
  display: inline-block;
  margin-bottom: 12px;
}

.page-about .honor-card h3 {
  margin: 0 0 10px;
  color: var(--chip);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.45;
}

.page-about .honor-card p {
  margin: 0;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.85;
}

.page-about .honor-close {
  margin: 26px 0 0;
  padding: 18px 20px;
  border-left: 4px solid var(--red);
  background: rgba(140, 47, 57, 0.14);
  color: var(--chip);
  font-size: 14px;
  line-height: 1.85;
  max-width: 44em;
}

/* ---------- 数据面板 ---------- */
.page-about .stat-board {
  padding: 22px 20px;
  border: 2px solid var(--line-gold);
  background: linear-gradient(180deg, rgba(18, 58, 43, 0.92), rgba(14, 42, 31, 0.96));
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.4);
}

.page-about .stat-board-title {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-about .stat-list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-about .stat-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--hair);
  opacity: 0;
  animation: about-stat-in 420ms var(--ease) forwards;
}

.page-about .stat-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .stat-item:nth-child(1) { animation-delay: 60ms; }
.page-about .stat-item:nth-child(2) { animation-delay: 130ms; }
.page-about .stat-item:nth-child(3) { animation-delay: 200ms; }
.page-about .stat-item:nth-child(4) { animation-delay: 270ms; }
.page-about .stat-item:nth-child(5) { animation-delay: 340ms; }
.page-about .stat-item:nth-child(6) { animation-delay: 410ms; }
.page-about .stat-item:nth-child(7) { animation-delay: 480ms; }

.page-about .stat-item dt {
  color: var(--mist);
  font-size: 14px;
  line-height: 1.5;
}

.page-about .stat-item dd {
  margin: 0;
  color: var(--chip);
  font-family: var(--font-mono);
  font-size: 20px;
  letter-spacing: 0.04em;
  line-height: 1.2;
  white-space: nowrap;
}

.page-about .stat-unit {
  margin-left: 4px;
  color: var(--mist);
  font-family: var(--font-sans);
  font-size: 12px;
}

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

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-about .about-hero h1 {
    font-size: 48px;
  }

  .page-about .sec-head h2 {
    font-size: 28px;
  }

  .page-about .crew-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .scale-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .honor-grid {
    grid-template-columns: 1.15fr 1fr;
  }
}

@media (min-width: 860px) {
  .page-about .dim-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
    gap: 32px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-hero {
    padding: 46px 0 62px;
  }

  .page-about .about-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
    padding-top: 56px;
  }

  .page-about .about-aside {
    position: sticky;
    top: 92px;
  }

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

@media (min-width: 1180px) {
  .page-about .crew-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .stat-item {
    opacity: 1;
    animation: none;
  }

  .page-about .crew-item,
  .page-about .scale-cell,
  .page-about .tl-trigger::after,
  .page-about .radar-points circle {
    transition: none;
  }

  .page-about .crew-item:hover,
  .page-about .scale-cell:hover {
    transform: none;
  }
}