/* ===== 关于我们 页面专属 ===== */
.page-about {
  --about-grid-line: rgba(0, 191, 255, .06);
  background: var(--bg-primary);
  color: var(--text-primary);
}

/* 面包屑 */
.page-about .breadcrumb {
  padding-top: 20px;
}
.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: .03em;
}
.page-about .breadcrumb-list li + li::before {
  content: '/';
  margin-right: 14px;
  color: var(--text-secondary);
  opacity: .4;
}
.page-about .breadcrumb-list a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}
.page-about .breadcrumb-list a:hover {
  color: var(--green);
}
.page-about .breadcrumb-list [aria-current="page"] {
  color: var(--green);
  font-weight: 600;
}

/* Hero 首屏 */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 56px 0 72px;
  background-image:
    linear-gradient(var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid-line) 1px, transparent 1px);
  background-size: 44px 44px;
  background-position: center top;
}
.page-about .about-hero::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 255, 136, .14), transparent 70%);
  pointer-events: none;
}
.page-about .about-hero::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 18%;
  transform: translateX(-50%);
  width: 520px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(0, 191, 255, .07), transparent 70%);
  pointer-events: none;
}
.page-about .about-hero > .container {
  position: relative;
  z-index: 1;
}
.page-about .about-hero .section-label {
  color: var(--green);
}
.page-about .about-hero-main h1 {
  margin: 16px 0 20px;
  font-family: var(--font-headline);
  font-size: 38px;
  line-height: 1.12;
  letter-spacing: .01em;
}
.page-about .about-highlight {
  color: var(--green);
}
.page-about .about-hero-lead {
  max-width: 620px;
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
}
.page-about .about-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 28px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.page-about .about-hero-stat {
  flex: 1 1 130px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.page-about .about-hero-stat .data-number {
  font-family: var(--font-mono);
  font-size: 42px;
  line-height: 1;
  color: var(--green);
}
.page-about .about-stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}
.page-about .about-hero-deco {
  position: absolute;
  right: -6px;
  bottom: -10px;
  z-index: 0;
  font-family: var(--font-headline);
  font-size: 68px;
  line-height: 1;
  white-space: nowrap;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 191, 255, .12);
  pointer-events: none;
  user-select: none;
}

/* 通用章节 */
.page-about .about-section {
  position: relative;
  padding: 56px 0;
}
.page-about .about-section-head {
  margin-bottom: 40px;
}
.page-about .about-section-head h2 {
  margin: 14px 0 12px;
  font-family: var(--font-headline);
  font-size: 28px;
  line-height: 1.25;
  letter-spacing: .01em;
}
.page-about .about-section-head p {
  max-width: 560px;
  margin: 0;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
}
.page-about .section-label {
  color: var(--green);
}
.page-about .about-philosophy .section-label {
  color: var(--green);
}
.page-about .about-timeline .section-label {
  color: var(--blue);
}
.page-about .about-team .section-label {
  color: var(--green);
}
.page-about .about-data .section-label {
  color: var(--orange);
}
.page-about .about-honor .section-label {
  color: var(--purple);
}

/* 品牌理念 */
.page-about .about-philosophy-list {
  display: grid;
  gap: 24px;
}
.page-about .about-philosophy-item {
  position: relative;
  padding: 32px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.page-about .about-philosophy-item:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 255, 136, .3);
  box-shadow: var(--shadow-green);
}
.page-about .about-philosophy-item::after {
  content: '';
  position: absolute;
  right: -20px;
  bottom: -20px;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 255, 136, .12), transparent 70%);
  pointer-events: none;
}
.page-about .about-philosophy-index {
  position: absolute;
  top: 18px;
  right: 24px;
  font-family: var(--font-mono);
  font-size: 56px;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 255, 136, .28);
  pointer-events: none;
  user-select: none;
}
.page-about .about-philosophy-item h3 {
  margin: 0 0 12px;
  font-family: var(--font-headline);
  font-size: 24px;
  line-height: 1.2;
}
.page-about .about-philosophy-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* 发展历程 */
.page-about .about-timeline {
  background: var(--bg-alt);
}
.page-about .about-timeline-wrap {
  position: relative;
  padding-left: 26px;
}
.page-about .about-timeline-wrap::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--green), var(--blue) 60%, var(--orange));
}
.page-about .about-timeline-item {
  position: relative;
  padding: 0 0 36px;
}
.page-about .about-timeline-item:last-child {
  padding-bottom: 0;
}
.page-about .about-timeline-item::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg-alt);
  border: 2px solid var(--green);
  box-shadow: 0 0 0 4px rgba(0, 255, 136, .12), 0 0 16px rgba(0, 255, 136, .3);
}
.page-about .about-timeline-item:nth-child(2)::before {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(0, 191, 255, .12), 0 0 16px rgba(0, 191, 255, .3);
}
.page-about .about-timeline-item:nth-child(3)::before {
  border-color: var(--green);
  box-shadow: 0 0 0 4px rgba(0, 255, 136, .12), 0 0 16px rgba(0, 255, 136, .3);
}
.page-about .about-timeline-item:nth-child(4)::before {
  border-color: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 119, 0, .12), 0 0 16px rgba(255, 119, 0, .3);
}
.page-about .about-timeline-num {
  position: absolute;
  top: -14px;
  right: 0;
  font-family: var(--font-mono);
  font-size: 72px;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 255, 136, .18);
  pointer-events: none;
  user-select: none;
}
.page-about .about-timeline-item:nth-child(2) .about-timeline-num {
  -webkit-text-stroke-color: rgba(0, 191, 255, .22);
}
.page-about .about-timeline-item:nth-child(4) .about-timeline-num {
  -webkit-text-stroke-color: rgba(255, 119, 0, .22);
}
.page-about .about-timeline-phase {
  display: inline-block;
  margin-bottom: 8px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(0, 255, 136, .08);
  color: var(--green);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .05em;
}
.page-about .about-timeline-item:nth-child(2) .about-timeline-phase {
  background: rgba(0, 191, 255, .08);
  color: var(--blue);
}
.page-about .about-timeline-item:nth-child(4) .about-timeline-phase {
  background: rgba(255, 119, 0, .08);
  color: var(--orange);
}
.page-about .about-timeline-item h3 {
  margin: 0 0 10px;
  font-family: var(--font-headline);
  font-size: 20px;
  line-height: 1.3;
  transition: color var(--transition);
}
.page-about .about-timeline-item:hover h3 {
  color: var(--green);
}
.page-about .about-timeline-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* 图片块 */
.page-about .about-image-block {
  margin: 40px 0 0;
}
.page-about .about-image-block img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-card);
}
.page-about .image-caption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
}

/* 技术团队 */
.page-about .about-team-grid {
  display: grid;
  gap: 36px;
}
.page-about .about-team-content p {
  margin: 0 0 16px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}
.page-about .about-team-list {
  list-style: none;
  margin: 24px 0;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.page-about .about-team-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.page-about .about-team-list .data-number {
  font-family: var(--font-mono);
  font-size: 36px;
  line-height: 1.1;
  color: var(--green);
}
.page-about .about-team-list li span:last-child {
  font-size: 12px;
  color: var(--text-secondary);
}

/* 数据能力与合作生态 */
.page-about .about-data {
  background: linear-gradient(180deg, var(--bg-primary), var(--bg-alt));
}
.page-about .about-data-grid {
  display: grid;
  gap: 36px;
}
.page-about .about-data-stats {
  display: grid;
  gap: 20px;
}
.page-about .about-data-stat {
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.page-about .about-data-stat .data-number {
  font-family: var(--font-mono);
  font-size: 48px;
  line-height: 1;
  color: var(--green);
}
.page-about .about-data-label {
  font-size: 14px;
  color: var(--text-secondary);
}
.page-about .about-ecosystem {
  margin-top: 48px;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.page-about .about-ecosystem h3 {
  margin: 0 0 12px;
  font-family: var(--font-headline);
  font-size: 22px;
}
.page-about .about-ecosystem p {
  margin: 0 0 20px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
}
.page-about .about-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 资质与荣誉 */
.page-about .about-honor-grid {
  display: grid;
  gap: 20px;
}
.page-about .about-honor-item {
  position: relative;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.page-about .about-honor-item:hover {
  transform: translateY(-4px);
  border-color: rgba(155, 89, 182, .35);
  box-shadow: 0 0 30px rgba(155, 89, 182, .12);
}
.page-about .about-honor-item h3 {
  margin: 14px 0 10px;
  font-family: var(--font-headline);
  font-size: 19px;
  line-height: 1.35;
}
.page-about .about-honor-item p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
}
.page-about .about-honor-note {
  margin-top: 28px;
  color: var(--text-secondary);
  font-size: 13px;
}

/* 服务承诺 */
.page-about .about-promise {
  background: var(--bg-alt);
}
.page-about .about-promise::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 240px;
  height: 4px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--green), var(--blue));
  opacity: .5;
}
.page-about .about-promise-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}
.page-about .about-promise-text {
  margin: 0 0 32px;
  font-family: var(--font-headline);
  font-size: 22px;
  line-height: 1.6;
  color: var(--text-primary);
  overflow-wrap: break-word;
}
.page-about .about-promise-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.page-about .about-promise-actions .btn {
  width: 100%;
}

/* 响应式：平板 */
@media (min-width: 768px) {
  .page-about .breadcrumb {
    padding-top: 24px;
  }
  .page-about .about-hero {
    padding: 72px 0 88px;
  }
  .page-about .about-hero-main h1 {
    font-size: 52px;
  }
  .page-about .about-hero-stats {
    gap: 28px;
  }
  .page-about .about-section {
    padding: 80px 0;
  }
  .page-about .about-section-head h2 {
    font-size: 34px;
  }
  .page-about .about-team-grid {
    grid-template-columns: 5fr 7fr;
    align-items: center;
  }
  .page-about .about-honor-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-about .about-promise-actions .btn {
    width: auto;
  }
}

/* 响应式：桌面 */
@media (min-width: 1024px) {
  .page-about .about-hero {
    padding: 96px 0 120px;
  }
  .page-about .about-hero-grid {
    display: grid;
    grid-template-columns: 8fr 4fr;
    gap: 48px;
    align-items: end;
  }
  .page-about .about-hero-main h1 {
    font-size: 68px;
  }
  .page-about .about-hero-lead {
    font-size: 18px;
  }
  .page-about .about-hero-stats {
    margin-top: 0;
    padding-top: 0;
    border-top: 0;
    flex-direction: column;
    align-items: flex-end;
    text-align: right;
  }
  .page-about .about-hero-stat {
    flex: none;
    min-width: 180px;
  }
  .page-about .about-hero-stat .data-number {
    font-size: 56px;
  }
  .page-about .about-hero-deco {
    font-size: 160px;
    right: 0;
    bottom: -20px;
  }
  .page-about .about-section {
    padding: 96px 0;
  }
  .page-about .about-section-head {
    margin-bottom: 56px;
  }
  .page-about .about-section-head h2 {
    font-size: 40px;
  }
  .page-about .about-philosophy-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    align-items: start;
  }
  .page-about .about-philosophy-item--offset {
    transform: translateY(28px);
  }
  .page-about .about-philosophy-item--offset:hover {
    transform: translateY(24px);
  }
  .page-about .about-timeline-wrap {
    max-width: 860px;
  }
  .page-about .about-timeline-num {
    font-size: 96px;
  }
  .page-about .about-timeline-item h3 {
    font-size: 22px;
  }
  .page-about .about-data-grid {
    grid-template-columns: 5fr 7fr;
    gap: 48px;
    align-items: center;
  }
  .page-about .about-data-stat .data-number {
    font-size: 60px;
  }
  .page-about .about-team-list {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .about-team-list .data-number {
    font-size: 40px;
  }
  .page-about .about-promise-text {
    font-size: 26px;
  }
}