/* ===== 品牌档案页 / about 专属样式 ===== */
.page-about {
  --about-line: rgba(255, 255, 255, 0.08);
  --about-line-strong: rgba(255, 255, 255, 0.16);
  --about-grid-line: rgba(255, 255, 255, 0.04);
  position: relative;
  color: var(--color-text);
  font-family: var(--font-body);
}

.page-about .container {
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: 20px;
}

.page-about .section {
  padding: 56px 0;
}

.page-about .section-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.page-about .section-head h2 {
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  line-height: 1.2;
  margin: 0;
}

.page-about .section-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  height: 32px;
  padding: 0 10px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 800;
  color: var(--color-bg);
  background: var(--color-data);
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 48px 0 28px;
  background:
    linear-gradient(135deg, rgba(0, 255, 136, 0.07), transparent 42%),
    var(--gradient-body);
  border-bottom: 1px solid var(--about-line);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset-block-start: 0;
  inset-inline-end: 0;
  width: 200px;
  height: 160px;
  background: linear-gradient(135deg, transparent 40%, rgba(255, 106, 0, 0.16));
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  pointer-events: none;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 28px;
}

.page-about .about-hero-grid {
  display: grid;
  gap: 22px;
}

.page-about .about-hero-main {
  max-width: 720px;
}

.page-about .about-hero-kicker {
  display: inline-block;
  margin-bottom: 18px;
  padding: 5px 12px;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-data);
  border: 1px solid rgba(0, 255, 136, 0.45);
}

.page-about h1 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.page-about .about-hero-lead {
  margin: 0;
  max-width: 60ch;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-muted);
}

.page-about .about-hero-meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  padding: 6px 12px;
  font-size: 0.8125rem;
  color: var(--color-text);
  background: rgba(17, 26, 53, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.page-about .meta-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-data);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.2);
  animation: boa-about-pulse 2s ease-in-out infinite;
}

@keyframes boa-about-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.page-about .about-hero-stats {
  display: grid;
  gap: 12px;
}

.page-about .about-stat {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 2px 8px;
  padding: 18px 18px 16px;
  background: rgba(17, 26, 53, 0.72);
  border: 1px solid var(--about-line);
  border-inline-start: 3px solid var(--color-data);
}

.page-about .about-stat .data-number {
  font-family: var(--font-mono);
  font-size: 2.125rem;
  font-weight: 800;
  line-height: 1;
  color: var(--color-data);
}

.page-about .stats-unit {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-data);
}

.page-about .about-stat-label {
  flex-basis: 100%;
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.page-about .about-anchor-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-anchor {
  position: relative;
  padding-inline-start: 14px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-about .about-anchor::before {
  content: "↳";
  position: absolute;
  inset-inline-start: 0;
  color: var(--color-cta);
}

.page-about .about-anchor:hover {
  color: var(--color-data);
}

/* ---------- 图片与标签 ---------- */
.page-about .about-figure {
  position: relative;
  margin: 0;
  padding: 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.page-about .about-figure-label {
  position: absolute;
  inset-block-end: 14px;
  inset-inline-start: 14px;
  margin: 0;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  color: #0b1026;
  background: var(--color-paper);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

/* ---------- 品牌定位 ---------- */
.page-about .about-positioning {
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-positioning-grid {
  display: grid;
  gap: 24px;
}

.page-about .about-positioning-copy .prose {
  margin: 0 0 14px;
  line-height: 1.8;
}

.page-about .about-positioning-copy .prose:last-child {
  margin-bottom: 0;
}

.page-about .about-positioning-cards {
  display: grid;
  gap: 14px;
}

.page-about .about-pos-card {
  padding: 20px 22px;
  background: rgba(17, 26, 53, 0.55);
  border: 1px solid var(--about-line);
}

.page-about .about-pos-card:nth-child(2) {
  background: var(--color-paper);
  border: 0;
}

.page-about .about-pos-card .paper-label {
  display: inline-block;
  margin-bottom: 12px;
  padding-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 800;
  color: var(--color-text);
  border-bottom: 2px solid var(--color-gold);
}

.page-about .about-pos-card:nth-child(2) .paper-label {
  color: var(--color-bg);
  border-bottom-color: var(--color-bg);
}

.page-about .about-pos-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.page-about .about-pos-card:nth-child(2) p {
  color: #1a2440;
}

/* ---------- 发展历程时间轴 ---------- */
.page-about .about-timeline-section {
  background:
    linear-gradient(180deg, rgba(17, 26, 53, 0.35), transparent 45%),
    var(--color-bg);
}

.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 38px;
  padding-block: 8px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  inset-block: 8px;
  inset-inline-start: 34px;
  width: 1px;
  background: linear-gradient(180deg, var(--color-data), var(--color-gold) 55%, var(--color-cta));
  opacity: 0.55;
}

.page-about .timeline-item {
  position: relative;
  padding-inline-start: 84px;
}

.page-about .timeline-node {
  position: absolute;
  inset-inline-start: 0;
  inset-block-start: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 68px;
  height: 34px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 800;
  color: var(--color-bg);
  background: var(--color-data);
  clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.page-about .timeline-node:hover,
.page-about .timeline-node:focus-visible {
  background: var(--color-gold);
  color: var(--color-bg);
}

.page-about .timeline-card {
  padding: 20px 22px;
  background: rgba(17, 26, 53, 0.55);
  border: 1px solid var(--about-line);
  border-inline-start: 3px solid var(--color-data);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-about .timeline-item:hover .timeline-card {
  background: rgba(17, 26, 53, 0.8);
  border-color: var(--about-line-strong);
  border-inline-start-color: var(--color-gold);
}

.page-about .timeline-tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--color-cta);
  border: 1px solid rgba(255, 106, 0, 0.45);
}

.page-about .timeline-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 1.125rem;
  font-weight: 800;
}

.page-about .timeline-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-muted);
}

/* ---------- 团队与技术 ---------- */
.page-about .about-team {
  background:
    linear-gradient(120deg, rgba(0, 255, 136, 0.05), transparent 50%),
    var(--color-bg);
  border-block: 1px solid var(--about-line);
}

.page-about .about-team-grid {
  display: grid;
  gap: 28px;
}

.page-about .about-team-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 22px;
}

.page-about .about-team-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 18px;
  background: rgba(17, 26, 53, 0.6);
  border: 1px solid var(--about-line);
  border-block-start: 3px solid var(--color-cta);
}

.page-about .about-team-stat .data-number {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--color-data);
}

.page-about .about-team-stat-label {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.page-about .about-team-copy .prose {
  margin: 0 0 14px;
  line-height: 1.8;
}

.page-about .about-tech-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-tech-list li {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 12px;
  align-items: baseline;
  padding-bottom: 10px;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-muted);
  border-bottom: 1px dashed var(--about-line);
}

.page-about .about-tech-list .tech-name {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 800;
  color: var(--color-text);
}

.page-about .about-team-figure {
  margin: 0;
}

/* ---------- 资质与认证 ---------- */
.page-about .about-awards {
  background-image:
    linear-gradient(var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-awards-grid {
  display: grid;
  gap: 16px;
}

.page-about .about-award-card {
  margin: 0;
  padding: 0;
  background: rgba(17, 26, 53, 0.72);
  border: 1px solid var(--about-line);
  transition: border-color 0.2s ease;
}

.page-about .about-award-card[open] {
  border-color: rgba(255, 177, 0, 0.6);
}

.page-about .about-award-card summary {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 48px 18px 20px;
  cursor: pointer;
  list-style: none;
}

.page-about .about-award-card summary::-webkit-details-marker {
  display: none;
}

.page-about .award-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 800;
  color: var(--color-bg);
  background: var(--color-gold);
  border-radius: 4px;
}

.page-about .award-title {
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 700;
}

.page-about .award-toggle {
  position: absolute;
  inset-block-start: 50%;
  inset-inline-end: 18px;
  font-family: var(--font-mono);
  font-size: 1.375rem;
  line-height: 1;
  color: var(--color-cta);
  transform: translateY(-50%);
  transition: transform 0.2s ease;
}

.page-about .about-award-card[open] .award-toggle {
  transform: translateY(-50%) rotate(45deg);
}

.page-about .award-detail-body {
  padding: 0 20px 20px;
  border-top: 1px dashed var(--about-line);
}

.page-about .award-detail-body p {
  margin: 16px 0 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--color-muted);
}

/* ---------- 合作生态 ---------- */
.page-about .about-ecosystem {
  background: linear-gradient(160deg, rgba(255, 177, 0, 0.07), transparent 55%);
}

.page-about .about-ecosystem-grid {
  display: grid;
  gap: 24px;
}

.page-about .about-ecosystem-copy .prose {
  margin: 0 0 14px;
  line-height: 1.8;
}

.page-about .about-ecosystem-copy .prose:last-child {
  margin-bottom: 0;
}

.page-about .about-partners {
  display: grid;
  gap: 12px;
}

.page-about .about-partner-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  background: rgba(17, 26, 53, 0.55);
  border: 1px solid var(--about-line);
}

.page-about .about-partner-name {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 800;
  color: var(--color-text);
}

.page-about .about-partner-role {
  font-size: 0.8125rem;
  color: var(--color-muted);
  text-align: end;
}

/* ---------- 继续浏览 ---------- */
.page-about .about-continue {
  padding: 48px 0 64px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-continue-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
}

.page-about .about-continue-title {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 800;
}

.page-about .about-continue-grid {
  display: grid;
  gap: 14px;
}

.page-about .about-continue-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px 14px;
  align-items: center;
  padding: 18px 20px;
  background: rgba(17, 26, 53, 0.5);
  border: 1px solid var(--about-line);
  text-decoration: none;
  color: var(--color-text);
  transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.page-about .about-continue-card .mono {
  grid-column: 1 / -1;
  font-size: 0.8125rem;
  color: var(--color-data);
}

.page-about .about-continue-card strong {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 800;
}

.page-about .about-continue-card em {
  font-style: normal;
  font-size: 0.8125rem;
  color: var(--color-muted);
  text-align: end;
}

.page-about .about-continue-card:hover {
  border-color: var(--color-data);
  background-color: rgba(0, 255, 136, 0.06);
  transform: translateY(-2px);
}

/* ---------- 平板与桌面适配 ---------- */
@media (min-width: 768px) {
  .page-about .section {
    padding: 72px 0;
  }

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

  .page-about .about-hero {
    padding: 72px 0 40px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 40px;
    align-items: start;
  }

  .page-about .about-hero-main {
    padding-block-start: 8px;
  }

  .page-about .about-positioning-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 32px;
  }

  .page-about .about-positioning-cards {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-team-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 36px;
    align-items: center;
  }

  .page-about .about-team-figure {
    order: 2;
  }

  .page-about .about-awards-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }

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

  .page-about .about-partners {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, 1fr);
  }

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

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

  .page-about .about-timeline {
    gap: 52px;
    padding-block: 24px;
  }

  .page-about .about-timeline::before {
    inset-inline-start: 50%;
    transform: translateX(-1px);
  }

  .page-about .timeline-item {
    width: 50%;
    padding-inline-start: 0;
  }

  .page-about .timeline-item:nth-child(odd) {
    padding-inline-start: 0;
    padding-inline-end: 64px;
  }

  .page-about .timeline-item:nth-child(even) {
    margin-inline-start: 50%;
    padding-inline-start: 64px;
    padding-inline-end: 0;
  }

  .page-about .timeline-item:nth-child(odd) .timeline-node {
    inset-inline-start: auto;
    inset-inline-end: -34px;
  }

  .page-about .timeline-item:nth-child(even) .timeline-node {
    inset-inline-start: -34px;
    inset-inline-end: auto;
  }
}