.page-about {
  --about-bg-card: #121A38;
  --about-bg-panel: #1E1B2E;
  --about-border: #4C1D95;
  --about-text-muted: #9CA3AF;
  --about-accent-purple: #6D28D9;
  --about-accent-green: #A3E635;
  --about-accent-blue: #38BDF8;
  --about-bg-foot: #050816;
  --about-radius: 20px;
  color: #F8F9FC;
}

.page-about .container {
  width: min(100% - 48px, 1240px);
  margin-inline: auto;
}

.page-about .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-block: 28px 8px;
  font-size: 0.875rem;
  color: var(--about-text-muted);
}

.page-about .breadcrumbs a {
  color: #C4B5FD;
  text-decoration: none;
}

.page-about .breadcrumbs a:hover {
  color: var(--about-accent-green);
}

.page-about .sep {
  opacity: 0.5;
}

.page-about .eyebrow {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--about-accent-green);
  margin-bottom: 14px;
}

.page-about .section-title {
  font-family: "Archivo Black", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 900;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  letter-spacing: 0.02em;
  margin: 0 0 20px;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: transform 220ms ease, box-shadow 220ms ease, background 220ms ease;
}

.page-about .btn-primary {
  background: linear-gradient(135deg, #6D28D9, #7C3AED);
  color: #F8F9FC;
  border: 1px solid #A3E635;
  box-shadow: 0 0 18px rgba(109, 40, 217, 0.5);
}

.page-about .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(163, 230, 53, 0.35);
}

.page-about .btn-outline {
  background: transparent;
  color: #C4B5FD;
  border: 1px solid var(--about-border);
}

.page-about .btn-outline:hover {
  border-color: var(--about-accent-green);
  color: var(--about-accent-green);
  box-shadow: 0 0 18px rgba(163, 230, 53, 0.15);
}

/* 首屏英雄区 */
.page-about .about-hero {
  padding-block: 52px 88px;
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.page-about .about-hero-visual {
  position: relative;
  order: 1;
}

.page-about .about-hero-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
  border: 1px solid var(--about-border);
  background: #0A1128;
}

.page-about .about-hero-shape {
  position: absolute;
  right: -14px;
  bottom: 12px;
  width: 160px;
  height: 160px;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.55), rgba(163, 230, 53, 0.18));
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  z-index: -1;
  filter: blur(12px);
}

.page-about .about-hero-copy {
  order: 2;
}

.page-about .about-hero-copy h1 {
  font-family: "Archivo Black", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 900;
  font-size: clamp(2.25rem, 5.5vw, 4rem);
  line-height: 1.12;
  margin: 0 0 24px;
  letter-spacing: 0.01em;
  color: #F8F9FC;
}

.page-about .about-hero-lead {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: #E2E8F0;
  border-left: 3px solid var(--about-accent-green);
  padding-left: 20px;
  margin-bottom: 20px;
}

.page-about .about-hero-note {
  font-size: 0.9375rem;
  color: var(--about-text-muted);
  line-height: 1.7;
  margin-bottom: 28px;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* 我们是谁 */
.page-about .about-mission {
  background: linear-gradient(180deg, rgba(10, 17, 40, 0.4), rgba(30, 27, 46, 0.55));
  padding-block: 88px;
  border-top: 1px solid rgba(76, 29, 149, 0.6);
  border-bottom: 1px solid rgba(76, 29, 149, 0.3);
}

.page-about .mission-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-about .mission-side {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.page-about .mission-index {
  font-family: "JetBrains Mono", monospace;
  font-size: 3.25rem;
  font-weight: 700;
  line-height: 1;
  color: rgba(163, 230, 53, 0.35);
  margin: 0;
}

.page-about .mission-body p {
  font-size: 1rem;
  line-height: 1.85;
  color: #D3D9E6;
  margin: 0 0 18px;
}

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

/* 时间轴 */
.page-about .about-timeline-section {
  padding-block: 96px 84px;
}

.page-about .section-head {
  margin-bottom: 56px;
}

.page-about .section-note {
  color: var(--about-text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
  max-width: 560px;
}

.page-about .about-timeline {
  position: relative;
  padding-left: 24px;
  margin: 0;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, #6D28D9 0%, #38BDF8 55%, #A3E635 100%);
  opacity: 0.65;
}

.page-about .about-timeline .timeline-item {
  position: relative;
  margin-bottom: 36px;
  padding-left: 32px;
}

.page-about .about-timeline .timeline-item::before {
  content: "";
  position: absolute;
  left: -23px;
  top: 18px;
  width: 14px;
  height: 14px;
  background: #A3E635;
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(163, 230, 53, 0.7);
  border: 2px solid #0A1128;
}

.page-about .timeline-marker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.page-about .timeline-year {
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--about-accent-green);
  background: rgba(163, 230, 53, 0.1);
  padding: 4px 14px;
  clip-path: polygon(0 0, 100% 0, 94% 100%, 0 100%);
}

.page-about .timeline-tag {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #C4B5FD;
  background: rgba(109, 40, 217, 0.3);
  padding: 4px 12px;
  border: 1px solid var(--about-border);
  clip-path: polygon(4px 0, 100% 0, calc(100% - 4px) 100%, 0 100%);
}

.page-about .timeline-card {
  background: var(--about-bg-card);
  border: 1px solid var(--about-border);
  border-radius: 4px 18px 18px 18px;
  padding: 24px 24px 22px;
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
  transition: border-color 220ms ease, box-shadow 220ms ease;
}

.page-about .timeline-card:hover,
.page-about .timeline-card:focus-within {
  border-color: rgba(163, 230, 53, 0.7);
  box-shadow: 0 0 24px rgba(163, 230, 53, 0.12);
}

.page-about .timeline-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: #F8F9FC;
  margin: 0 0 10px;
}

.page-about .timeline-card p {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: #C6CFE0;
  margin: 0;
}

/* 数据规模 */
.page-about .about-stats-section {
  background: var(--about-bg-panel);
  border-block: 1px solid rgba(76, 29, 149, 0.5);
  padding-block: 88px;
}

.page-about .stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.page-about .stats-copy p:not(.eyebrow) {
  color: #D3D9E6;
  line-height: 1.8;
  font-size: 1rem;
  margin-bottom: 16px;
}

.page-about .stats-note {
  color: var(--about-text-muted) !important;
  font-size: 0.9375rem !important;
  border-left: 3px solid var(--about-accent-purple);
  padding-left: 16px;
}

.page-about .stats-figures {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
}

.page-about .stat-block {
  background: rgba(10, 17, 40, 0.7);
  border: 1px solid var(--about-border);
  border-radius: 14px;
  padding: 26px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: border-color 220ms ease, transform 220ms ease;
}

.page-about .stat-block:hover {
  border-color: rgba(163, 230, 53, 0.6);
  transform: translateY(-3px);
}

.page-about .stat-num {
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  color: var(--about-accent-green);
  line-height: 1.2;
}

.page-about .stat-label {
  font-size: 0.875rem;
  color: var(--about-text-muted);
  line-height: 1.5;
}

/* 数据条形图模块 */
.page-about .about-scale-section {
  padding-block: 96px 40px;
}

.page-about .scale-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  background: var(--about-bg-card);
  border: 1px solid var(--about-border);
  border-radius: 20px;
  overflow: hidden;
}

.page-about .scale-media {
  position: relative;
  min-height: 0;
}

.page-about .scale-img {
  width: 100%;
  max-width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
  display: block;
}

.page-about .scale-body {
  padding: 32px 28px 40px;
}

.page-about .scale-body p:not(.eyebrow) {
  color: #D3D9E6;
  line-height: 1.8;
  font-size: 1rem;
  margin-bottom: 18px;
}

.page-about .scale-list {
  list-style: none;
  padding: 0;
  margin: 0 0 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .scale-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: #C6CFE0;
}

.page-about .scale-dot {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  margin-top: 9px;
  border-radius: 2px;
  background: var(--about-accent-blue);
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.6);
}

.page-about .scale-note {
  color: var(--about-text-muted) !important;
  font-size: 0.875rem !important;
}

/* 改版说明 */
.page-about .about-renewal {
  padding-block: 88px;
  background: linear-gradient(160deg, rgba(109, 40, 217, 0.16), rgba(10, 17, 40, 0.1) 36%, rgba(30, 27, 46, 0.5));
  border-block: 1px solid rgba(76, 29, 149, 0.4);
}

.page-about .renewal-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.page-about .renewal-visual {
  order: 1;
}

.page-about .renewal-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border: 1px solid var(--about-border);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-about .renewal-copy {
  order: 2;
}

.page-about .renewal-copy p:not(.eyebrow) {
  color: #D3D9E6;
  line-height: 1.8;
  font-size: 1rem;
  margin-bottom: 20px;
}

.page-about .renewal-list {
  counter-reset: renewal-counter;
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .renewal-list li {
  counter-increment: renewal-counter;
  position: relative;
  padding: 18px 20px 18px 52px;
  background: rgba(10, 17, 40, 0.65);
  border: 1px solid var(--about-border);
  border-left: 3px solid var(--about-accent-green);
  border-radius: 8px 14px 14px 8px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: #C6CFE0;
}

.page-about .renewal-list li::before {
  content: "0" counter(renewal-counter);
  position: absolute;
  left: 14px;
  top: 18px;
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--about-accent-green);
}

.page-about .renewal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* 服务理念 */
.page-about .about-service {
  padding-block: 96px 48px;
}

.page-about .service-panel {
  background: var(--about-bg-panel);
  border: 1px solid var(--about-border);
  border-radius: 20px;
  padding: 40px 28px;
}

.page-about .service-head {
  margin-bottom: 36px;
}

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

.page-about .service-item {
  background: rgba(10, 17, 40, 0.6);
  border-radius: 16px;
  padding: 28px 24px;
  border: 1px solid rgba(76, 29, 149, 0.55);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  transition: border-color 220ms ease;
}

.page-about .service-item:hover {
  border-color: rgba(163, 230, 53, 0.45);
}

.page-about .service-index {
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--about-accent-green);
  display: block;
  margin-bottom: 14px;
}

.page-about .service-item h3 {
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
  font-size: 1.1875rem;
  margin: 0 0 10px;
  color: #F8F9FC;
}

.page-about .service-item p {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: #AEB9CE;
  margin: 0;
}

/* 联系方式 */
.page-about .about-contact {
  padding-block: 56px 96px;
}

.page-about .contact-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  background: linear-gradient(140deg, rgba(109, 40, 217, 0.22), rgba(10, 17, 40, 0.72));
  border: 1px solid var(--about-border);
  border-radius: 20px;
  padding: 40px 28px;
}

.page-about .contact-copy p:not(.eyebrow) {
  color: #E2E8F0;
  line-height: 1.8;
  font-size: 1rem;
  margin: 0;
}

.page-about .contact-channels {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-about .channel-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(10, 17, 40, 0.6);
  border-left: 3px solid var(--about-accent-green);
  border-radius: 0 12px 12px 0;
  padding: 16px 20px;
}

.page-about .channel-label {
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--about-text-muted);
  text-transform: uppercase;
  font-family: "JetBrains Mono", monospace;
}

.page-about .channel-item a {
  color: #F8F9FC;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  word-break: break-all;
}

.page-about .channel-item a:hover {
  color: var(--about-accent-green);
}

.page-about .channel-item span:last-child {
  color: #F8F9FC;
  font-weight: 600;
  font-size: 1rem;
}

.page-about .contact-actions {
  margin-top: 6px;
}

/* 响应式布局 */
@media (min-width: 768px) {
  .page-about .about-hero-grid {
    grid-template-columns: 5fr 7fr;
    gap: 56px;
  }

  .page-about .about-hero-visual {
    order: 1;
  }

  .page-about .about-hero-copy {
    order: 2;
  }

  .page-about .mission-grid {
    grid-template-columns: 1fr 2fr;
    gap: 48px;
  }

  .page-about .stats-grid {
    grid-template-columns: 2fr 3fr;
    gap: 64px;
  }

  .page-about .scale-panel {
    grid-template-columns: 7fr 5fr;
  }

  .page-about .renewal-grid {
    grid-template-columns: 5fr 7fr;
    gap: 56px;
  }

  .page-about .renewal-visual {
    order: 2;
  }

  .page-about .renewal-copy {
    order: 1;
  }

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

  .page-about .contact-block {
    grid-template-columns: 3fr 2fr;
    gap: 48px;
    padding: 48px 40px;
  }

  .page-about .service-panel {
    padding: 56px 40px;
  }

  .page-about .scale-body {
    padding: 48px 36px;
  }

  .page-about .timeline-card p {
    max-width: 720px;
  }
}

@media (min-width: 1024px) {
  .page-about .service-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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