.page-about {
  --about-clip: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px);
  --about-glow-green: rgba(182, 255, 46, 0.16);
  --about-glow-blue: rgba(0, 229, 255, 0.14);
  color: var(--text-pure);
  background:
    radial-gradient(640px 420px at 88% 4%, rgba(0, 229, 255, 0.10), transparent 62%),
    radial-gradient(520px 360px at 8% 32%, rgba(182, 255, 46, 0.06), transparent 60%),
    var(--bg-deep);
  overflow-x: hidden;
}

.page-about .container {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: 20px;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--text-pure);
}

.page-about h1 {
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.1;
  max-width: 900px;
  margin: 12px 0 18px;
  letter-spacing: 0.01em;
}

.page-about h2 {
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.15;
  margin: 0;
}

.page-about h3 {
  font-size: 20px;
  line-height: 1.3;
  margin: 8px 0 10px;
}

.page-about p {
  font-family: var(--font-body);
  color: var(--text-muted);
  line-height: 1.75;
  margin: 0 0 12px;
}

.page-about .about-chapter {
  font-family: var(--font-numeric);
  font-size: 32px;
  line-height: 1;
  font-weight: 800;
  color: var(--electric-blue);
  text-shadow: 0 0 18px rgba(0, 229, 255, 0.35);
  display: block;
}

.page-about .section-label {
  color: var(--neon-green);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 6px;
  font-family: var(--font-body);
  font-weight: 700;
}

.page-about .about-section-head {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
  padding-top: 48px;
}

.page-about .about-section-head .about-chapter,
.page-about .about-h2h-head .about-chapter {
  margin-bottom: 2px;
}

/* ===== 首屏 ===== */
.page-about .about-hero {
  position: relative;
  padding: 56px 0 64px;
  border-bottom: 1px solid var(--grid-line);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-green), var(--electric-blue) 48%, transparent);
  opacity: 0.55;
  z-index: 2;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse at 70% 30%, #000 20%, transparent 72%);
  mask-image: radial-gradient(ellipse at 70% 30%, #000 20%, transparent 72%);
}

.page-about .about-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-about .about-hero-copy {
  position: relative;
  z-index: 2;
}

.page-about .about-hero .breadcrumb {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-hero .breadcrumb a {
  color: var(--electric-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-about .about-hero .breadcrumb a:hover {
  color: var(--neon-green);
}

.page-about .about-hero-lead {
  font-size: 18px;
  line-height: 1.7;
  color: #c6d0e4;
  max-width: 620px;
  margin-bottom: 28px;
}

.page-about .about-hero-meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.page-about .about-hero-stat {
  padding: 16px;
  border: 1px solid var(--grid-line);
  border-radius: var(--radius-md);
  background: rgba(18, 26, 43, 0.7);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-about .about-hero-num {
  font-family: var(--font-numeric);
  font-size: 26px;
  font-weight: 800;
  color: var(--neon-green);
  line-height: 1.1;
}

.page-about .about-hero-stat span:last-child {
  font-size: 13px;
  color: var(--text-muted);
}

.page-about .about-hero-media {
  margin: 0;
  position: relative;
  z-index: 1;
}

.page-about .about-hero-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  object-fit: cover;
  border: 1px solid var(--grid-line);
}

.page-about .about-hero-media figcaption {
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-muted);
  text-align: right;
}

.page-about .about-mega-year {
  position: absolute;
  right: -4%;
  top: 10%;
  font-family: var(--font-display);
  font-size: clamp(120px, 30vw, 380px);
  font-weight: 900;
  line-height: 0.9;
  color: transparent;
  -webkit-text-stroke: 1px rgba(182, 255, 46, 0.22);
  z-index: 0;
  pointer-events: none;
  user-select: none;
  letter-spacing: -0.04em;
}

/* ===== 从数据索引到观赛入口 ===== */
.page-about .about-origin {
  padding: 36px 0 40px;
  border-bottom: 1px solid var(--grid-line);
}

.page-about .about-origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .about-origin-side {
  padding-top: 40px;
}

.page-about .about-origin-side .about-chapter {
  display: block;
  margin-bottom: 16px;
}

.page-about .about-origin-main p.about-origin-first {
  font-size: 17px;
  color: #d2daf0;
}

.page-about .about-origin-flow {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-numeric);
  font-size: 13px;
}

.page-about .about-origin-flow span:not(.about-flow-arrow) {
  background: var(--bg-elevated);
  border: 1px solid var(--grid-line);
  border-radius: 999px;
  padding: 6px 14px;
  color: var(--electric-blue);
  white-space: nowrap;
}

.page-about .about-origin-flow .about-flow-arrow {
  color: var(--neon-green);
  font-weight: 800;
}

/* ===== 关键里程碑时间轴 ===== */
.page-about .about-timeline {
  padding: 20px 0 48px;
  border-bottom: 1px solid var(--grid-line);
  background:
    linear-gradient(180deg, rgba(18, 26, 43, 0.5), transparent 30%),
    repeating-linear-gradient(90deg, transparent 0 44px, rgba(0, 229, 255, 0.05) 44px 45px);
}

.page-about .about-timeline-layout {
  position: relative;
  max-width: 960px;
}

.page-about .about-timeline-track {
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 82px;
  width: 2px;
  background: linear-gradient(180deg, var(--electric-blue), var(--neon-green));
  opacity: 0.55;
}

.page-about .about-timeline-track::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(180deg, rgba(255, 255, 255, 0.5) 0 1px, transparent 1px 42px);
}

.page-about .about-timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-tl-item {
  position: relative;
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 18px;
  padding: 16px 0;
}

.page-about .about-tl-year {
  font-family: var(--font-numeric);
  font-weight: 800;
  font-size: 24px;
  line-height: 1.1;
  color: var(--electric-blue);
  padding-top: 6px;
  text-align: right;
  transition: color 0.25s ease, text-shadow 0.25s ease;
}

.page-about .about-tl-card {
  position: relative;
  border-radius: var(--radius-md);
  padding: 20px;
  background: linear-gradient(135deg, rgba(26, 36, 56, 0.95), rgba(18, 26, 43, 0.9));
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-about .about-tl-card .tag {
  margin-bottom: 4px;
}

.page-about .about-tl-card p {
  margin-bottom: 0;
  font-size: 14px;
}

.page-about .about-tl-item:hover .about-tl-card,
.page-about .about-tl-item:focus-within .about-tl-card {
  transform: translateY(-3px);
  border-color: rgba(182, 255, 46, 0.4);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(0, 229, 255, 0.08);
}

.page-about .about-tl-item:hover .about-tl-year,
.page-about .about-tl-item:focus-within .about-tl-year {
  color: var(--neon-green);
  text-shadow: 0 0 14px rgba(182, 255, 46, 0.35);
}

/* ===== 数据能力 ===== */
.page-about .about-capability {
  padding: 20px 0 48px;
  border-bottom: 1px solid var(--grid-line);
}

.page-about .about-cap-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .about-cap-media {
  padding: 16px;
  border-radius: var(--radius-lg);
  background: var(--bg-panel);
  clip-path: var(--about-clip);
  align-self: start;
}

.page-about .about-cap-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: cover;
  border: 1px solid var(--grid-line);
}

.page-about .about-cap-media-note {
  margin-top: 12px;
  text-align: center;
  font-size: 13px;
  margin-bottom: 0;
}

.page-about .about-cap-detail {
  display: grid;
  gap: 20px;
}

.page-about .about-cap-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 0;
}

.page-about .about-cap-stat {
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--bg-panel);
  border: 1px solid var(--grid-line);
}

.page-about .about-cap-stat dt {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-muted);
}

.page-about .about-cap-stat dd {
  font-family: var(--font-numeric);
  font-size: 28px;
  font-weight: 800;
  color: var(--neon-green);
  margin: 4px 0 6px;
}

.page-about .about-cap-stat p {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

.page-about .about-radar-wrap {
  padding: 20px 16px;
  border-radius: var(--radius-lg);
  background: var(--bg-panel);
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-radar {
  width: 100%;
  max-width: 320px;
  height: auto;
  margin-inline: auto;
}

.page-about .radar-poly-grid {
  fill: none;
  stroke: rgba(0, 229, 255, 0.18);
  stroke-width: 0.6;
}

.page-about .about-radar .radar-axis line {
  stroke: rgba(0, 229, 255, 0.12);
  stroke-width: 0.4;
}

.page-about .about-radar .radar-axis:hover line {
  stroke: var(--neon-green);
  stroke-width: 1;
  opacity: 0.9;
}

.page-about .radar-poly-data {
  fill: rgba(182, 255, 46, 0.13);
  stroke: var(--neon-green);
  stroke-width: 1.2;
  stroke-linejoin: round;
  transition: fill 0.25s ease;
}

.page-about .radar-data-dot {
  fill: var(--neon-green);
  filter: drop-shadow(0 0 4px rgba(182, 255, 46, 0.6));
}

.page-about .about-radar-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.page-about .about-radar-legend li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 6px;
  padding: 10px 12px;
  background: rgba(10, 14, 26, 0.55);
  border: 1px solid var(--grid-line);
  border-radius: 10px;
  font-family: var(--font-body);
  font-size: 13px;
}

.page-about .about-radar-legend li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--electric-blue);
  flex-shrink: 0;
}

.page-about .about-radar-legend li:nth-child(1)::before {
  background: var(--neon-green);
}

.page-about .about-radar-legend li:nth-child(3)::before {
  background: var(--warm-orange);
}

.page-about .about-radar-legend .legend-label {
  color: var(--text-muted);
}

.page-about .about-radar-legend strong {
  font-family: var(--font-numeric);
  color: var(--electric-blue);
  font-size: 14px;
}

/* ===== 内容与质量 ===== */
.page-about .about-quality {
  padding: 20px 0 48px;
  border-bottom: 1px solid var(--grid-line);
}

.page-about .about-quality-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-quality-card {
  padding: 24px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--bg-elevated), var(--bg-panel));
  position: relative;
  overflow: hidden;
  clip-path: var(--about-clip);
}

.page-about .about-quality-card h3 {
  margin-top: 10px;
}

.page-about .about-quality-card p {
  margin-bottom: 0;
  font-size: 14px;
}

.page-about .about-quality-card-featured {
  background: linear-gradient(135deg, rgba(182, 255, 46, 0.10), rgba(18, 26, 43, 0.9) 55%);
}

.page-about .about-quality-note {
  margin-top: 24px;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  border: 1px dashed rgba(0, 229, 255, 0.25);
  background: rgba(18, 26, 43, 0.5);
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-start;
}

.page-about .about-quality-note p {
  margin: 0;
  font-size: 14px;
}

/* ===== 团队与运营 ===== */
.page-about .about-team {
  padding: 20px 0 48px;
  border-bottom: 1px solid var(--grid-line);
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-about .about-team-copy .about-chapter {
  display: block;
  margin-bottom: 16px;
}

.page-about .about-team-copy h2 {
  margin-bottom: 12px;
}

.page-about .about-team-lead {
  font-size: 15px;
  color: #c6d0e4;
}

.page-about .about-team-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-team-list li {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--bg-panel);
  border-left: 3px solid var(--electric-blue);
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.page-about .about-team-list li:hover,
.page-about .about-team-list li:focus-within {
  background: linear-gradient(90deg, rgba(182, 255, 46, 0.08), rgba(18, 26, 43, 0.98));
  border-left-color: var(--neon-green);
  transform: translateX(4px);
}

.page-about .about-team-role {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--text-pure);
  margin-bottom: 4px;
}

.page-about .about-team-list li:nth-child(2) .about-team-role {
  color: var(--neon-green);
}

.page-about .about-team-list li:nth-child(3) .about-team-role {
  color: var(--electric-blue);
}

.page-about .about-team-list li:nth-child(4) .about-team-role {
  color: var(--warm-orange);
}

.page-about .about-team-list li p {
  margin: 0;
  font-size: 14px;
}

.page-about .about-team-media {
  padding: 16px;
  border-radius: var(--radius-lg);
  background: var(--bg-panel);
  clip-path: var(--about-clip);
  align-self: start;
}

.page-about .about-team-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: cover;
  border: 1px solid var(--grid-line);
}

.page-about .about-team-media-note {
  margin-top: 12px;
  text-align: center;
  font-size: 13px;
  margin-bottom: 0;
}

/* ===== 历史交锋数据模块 ===== */
.page-about .about-h2h {
  padding: 20px 0 48px;
  border-bottom: 1px solid var(--grid-line);
  background:
    linear-gradient(180deg, rgba(182, 255, 46, 0.04), transparent 24%),
    var(--bg-deep);
}

.page-about .about-h2h-head {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
  padding-top: 40px;
}

.page-about .about-h2h-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .about-h2h-match {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--bg-elevated), var(--bg-panel));
  clip-path: var(--about-clip);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.page-about .about-h2h-match::after {
  content: "";
  position: absolute;
  inset: auto 0 0 auto;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(255, 138, 0, 0.20), transparent 70%);
  pointer-events: none;
}

.page-about .about-h2h-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 18px;
}

.page-about .about-h2h-league {
  font-size: 14px;
  color: var(--text-muted);
  font-family: var(--font-body);
}

.page-about .about-h2h-teams {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.page-about .about-h2h-team {
  font-family: var(--font-display);
  font-size: clamp(20px, 4vw, 30px);
  font-weight: 800;
  color: var(--text-pure);
}

.page-about .about-h2h-versus {
  font-family: var(--font-numeric);
  color: var(--neon-green);
  font-weight: 800;
  font-size: 18px;
}

.page-about .about-h2h-summary {
  margin-top: 16px;
  font-size: 14px;
  color: var(--electric-blue);
  font-family: var(--font-numeric);
  margin-bottom: 0;
}

.page-about .about-h2h-table {
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--bg-panel);
  overflow-x: auto;
}

.page-about .about-h2h-card {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: 14px;
}

.page-about .about-h2h-card th,
.page-about .about-h2h-card td {
  padding: 12px 8px;
  text-align: center;
  border-bottom: 1px solid var(--grid-line);
}

.page-about .about-h2h-card th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-about .about-h2h-card td {
  color: var(--text-pure);
  font-family: var(--font-numeric);
}

.page-about .about-h2h-card tr:last-child td {
  border-bottom: none;
}

.page-about .about-h2h-note {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--grid-line);
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ===== 联系入口 ===== */
.page-about .about-contact {
  padding: 40px 0 64px;
}

.page-about .about-contact-card {
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  background:
    radial-gradient(360px 200px at 80% 0%, rgba(182, 255, 46, 0.10), transparent 70%),
    linear-gradient(135deg, var(--bg-elevated), var(--bg-panel));
  display: grid;
  gap: 20px;
  clip-path: var(--about-clip);
}

.page-about .about-contact-copy .about-chapter {
  display: block;
  margin-bottom: 14px;
}

.page-about .about-contact-copy h2 {
  margin-bottom: 12px;
}

.page-about .about-contact-copy p {
  font-size: 14px;
}

.page-about .about-contact-list {
  list-style: none;
  margin: 18px 0;
  padding: 0;
  display: grid;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-muted);
}

.page-about .about-contact-list li::before {
  content: "◆";
  color: var(--neon-green);
  margin-right: 8px;
  font-size: 10px;
}

.page-about .about-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-contact-side {
  padding-top: 20px;
  border-top: 1px dashed var(--grid-line);
  display: grid;
  gap: 4px;
}

.page-about .about-contact-side p {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-pure);
  margin-bottom: 6px;
  font-size: 16px;
}

.page-about .about-contact-side a {
  color: var(--electric-blue);
  text-decoration: none;
  font-family: var(--font-body);
  font-size: 14px;
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-contact-side a:hover {
  color: var(--neon-green);
  border-color: var(--grid-line);
}

/* ===== 动效偏好 ===== */
@media (prefers-reduced-motion: no-preference) {
  .page-about .about-tl-card,
  .page-about .about-quality-card,
  .page-about .about-team-list li {
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  }
}

/* ===== 响应式：平板 ===== */
@media (min-width: 768px) {
  .page-about .container {
    padding-inline: 32px;
  }

  .page-about .about-hero-meta {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-cap-stats {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .page-about .about-radar-wrap {
    grid-template-columns: 220px 1fr;
    align-items: center;
  }

  .page-about .about-h2h-grid {
    grid-template-columns: 1fr 1.4fr;
    align-items: stretch;
  }

  .page-about .about-contact-card {
    grid-template-columns: 1.4fr 0.8fr;
    align-items: center;
    padding: 36px;
  }

  .page-about .about-contact-side {
    border-top: none;
    border-left: 1px dashed var(--grid-line);
    padding-top: 0;
    padding-left: 28px;
  }
}

/* ===== 响应式：桌面 ===== */
@media (min-width: 1024px) {
  .page-about .about-hero {
    padding: 88px 0 96px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 48px;
    align-items: center;
  }

  .page-about .about-origin-grid {
    grid-template-columns: 0.9fr 1.6fr;
    gap: 56px;
  }

  .page-about .about-origin-side {
    padding-top: 56px;
  }

  .page-about .about-cap-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-cap-media {
    padding: 20px;
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    gap: 48px;
    align-items: center;
  }

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

  .page-about .about-timeline-list {
    max-width: 760px;
  }

  .page-about .about-quality-note {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-about .about-quality-note p {
    max-width: 720px;
  }
}

/* ===== 响应式：大桌面 ===== */
@media (min-width: 1440px) {
  .page-about .about-hero-grid {
    gap: 72px;
  }

  .page-about .about-cap-grid {
    gap: 64px;
  }

  .page-about .about-mega-year {
    right: -2%;
  }
}