.page-about {
  --about-primary: #FF4500;
  --about-secondary: #1E90FF;
  --about-accent: #FFD700;
  --about-bg-alt: #111111;
  --about-border-light: #333333;
  --about-radius: 8px;
  --about-gap: 32px;
  --about-section-gap: 80px;
  background-color: #0A0A0A;
  color: #FFFFFF;
  font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  padding-top: calc(var(--header-height, 56px) + 16px);
}

/* --- 面包屑 --- */
.page-about .breadcrumb {
  max-width: var(--max-width, 1280px);
  margin: 0 auto 40px;
  padding: 0 20px;
  font-size: 0.875rem;
  color: #B0B0B0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}
.page-about .breadcrumb__link {
  color: #B0B0B0;
  text-decoration: none;
  transition: color 0.25s ease;
}
.page-about .breadcrumb__link:hover,
.page-about .breadcrumb__link:focus {
  color: var(--about-primary);
  outline: none;
}
.page-about .breadcrumb__separator {
  color: #555555;
  user-select: none;
}
.page-about .breadcrumb__current {
  color: #FFFFFF;
  font-weight: 600;
}

/* --- 容器 --- */
.page-about .container {
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: 0 20px;
}

/* --- 通用编号标题 --- */
.page-about .section-header {
  margin-bottom: 40px;
  position: relative;
}
.page-about .section-header__number {
  font-family: 'Consolas', 'Source Code Pro', monospace;
  font-size: 3rem;
  font-weight: 900;
  color: var(--about-primary);
  opacity: 0.3;
  display: block;
  line-height: 1;
  margin-bottom: -8px;
}
.page-about .section-header__title {
  font-family: 'Impact', 'Arial Black', 'Helvetica Neue', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: #FFFFFF;
  margin: 0 0 8px 0;
  letter-spacing: 0.02em;
}
.page-about .section-header__desc {
  font-size: 1rem;
  color: #B0B0B0;
  margin: 0;
  max-width: 560px;
}

/* ============================
   品牌声明
   ============================ */
.page-about .brand-statement {
  margin-bottom: var(--about-section-gap);
  position: relative;
}
.page-about .brand-statement::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--about-primary), transparent 80%);
}
.page-about .brand-statement__inner {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-top: 48px;
  align-items: center;
}
.page-about .brand-statement__text {
  flex: 1;
  order: 2;
}
.page-about .brand-statement__tag {
  display: inline-block;
  font-family: 'Consolas', 'Source Code Pro', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--about-primary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border: 1px solid var(--about-primary);
  padding: 2px 12px;
  margin-bottom: 16px;
}
.page-about .brand-statement__title {
  font-family: 'Impact', 'Arial Black', 'Helvetica Neue', sans-serif;
  font-size: 2.4rem;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.15;
  margin: 0 0 20px 0;
  letter-spacing: 0.01em;
}
.page-about .brand-statement__desc {
  font-size: 1.05rem;
  color: #B0B0B0;
  line-height: 1.7;
  margin: 0 0 24px 0;
  max-width: 580px;
}
.page-about .brand-statement__line {
  width: 80px;
  height: 4px;
  background: var(--about-primary);
  margin-bottom: 28px;
  border-radius: 2px;
}
.page-about .brand-statement__action {
  display: inline-block;
}
.page-about .brand-statement__visual {
  flex: 0 0 auto;
  order: 1;
  width: 100%;
  max-width: 400px;
}
.page-about .brand-statement__img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  border-radius: var(--about-radius);
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

/* ============================
   服务理念
   ============================ */
.page-about .mission {
  margin-bottom: var(--about-section-gap);
  position: relative;
}
.page-about .mission::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: repeating-linear-gradient(90deg, #333333 0, #333333 8px, transparent 8px, transparent 16px);
}
.page-about .mission__label {
  font-family: 'Consolas', 'Source Code Pro', monospace;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--about-primary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin: 0 0 16px 0;
  padding-top: 40px;
}
.page-about .mission__block {
  display: flex;
  gap: 20px;
  align-items: stretch;
}
.page-about .mission__bar {
  flex: 0 0 4px;
  background: linear-gradient(180deg, var(--about-primary), var(--about-secondary));
  border-radius: 2px;
  min-height: 100px;
}
.page-about .mission__quote {
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
}
.page-about .mission__text {
  font-size: 1.25rem;
  font-weight: 400;
  color: #E0E0E0;
  line-height: 1.7;
  margin: 0 0 16px 0;
  font-style: normal;
}
.page-about .mission__source {
  font-size: 0.9rem;
  color: #B0B0B0;
  font-style: normal;
}

/* ============================
   核心能力
   ============================ */
.page-about .capabilities {
  margin-bottom: var(--about-section-gap);
  position: relative;
}
.page-about .capabilities::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--about-primary), #333333 60%, transparent);
}
.page-about .capabilities__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 40px;
}
.page-about .capability-card {
  background: var(--about-bg-alt);
  padding: 24px 20px;
  border: 1px solid #2A2A2A;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  transition: border-color 0.3s ease, transform 0.25s ease, box-shadow 0.3s ease;
  cursor: default;
}
.page-about .capability-card:hover,
.page-about .capability-card:focus-within {
  border-color: var(--about-primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(255, 69, 0, 0.15);
}
.page-about .capability-card__title {
  font-family: 'Impact', 'Arial Black', 'Helvetica Neue', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: #FFFFFF;
  margin: 0 0 8px 0;
  letter-spacing: 0.02em;
}
.page-about .capability-card__desc {
  font-size: 0.9rem;
  color: #B0B0B0;
  margin: 0;
  line-height: 1.5;
}
.page-about .capabilities__region {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
  background: rgba(255, 69, 0, 0.04);
  border: 1px solid #2A2A2A;
  padding: 24px 20px;
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
}
.page-about .capabilities__region-visual {
  flex: 0 0 auto;
  width: 100%;
  max-width: 300px;
}
.page-about .capabilities__region-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
  object-fit: cover;
  clip-path: polygon(4px 0, 100% 0, 100% calc(100% - 4px), calc(100% - 4px) 100%, 0 100%, 0 4px);
}
.page-about .capabilities__region-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}
.page-about .capabilities__region-icon {
  font-size: 1.5rem;
  color: var(--about-accent);
  display: block;
}
.page-about .capabilities__region-desc {
  font-size: 0.95rem;
  color: #CCCCCC;
  margin: 0;
  line-height: 1.6;
}

/* ============================
   数据仪表盘
   ============================ */
.page-about .dashboard {
  margin-bottom: var(--about-section-gap);
  position: relative;
  padding-bottom: 48px;
}
.page-about .dashboard::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, #333333 20%, var(--about-primary) 50%, #333333 80%, transparent);
}
.page-about .dashboard::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--about-primary) 0, var(--about-primary) 12px, transparent 12px, transparent 24px);
}
.page-about .dashboard__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 40px;
}
.page-about .dashboard__item {
  background: var(--about-bg-alt);
  padding: 20px 16px;
  text-align: center;
  border: 1px solid #2A2A2A;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  position: relative;
  transition: border-color 0.3s ease, transform 0.25s ease;
  cursor: default;
}
.page-about .dashboard__item:hover,
.page-about .dashboard__item:focus-within {
  border-color: var(--about-primary);
  transform: scale(1.02);
}
.page-about .dashboard__item:hover .dashboard__detail,
.page-about .dashboard__item:focus-within .dashboard__detail {
  opacity: 1;
  max-height: 60px;
  padding-top: 8px;
  visibility: visible;
}
.page-about .dashboard__value {
  font-family: 'Consolas', 'Source Code Pro', monospace;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--about-primary);
  display: block;
  line-height: 1.1;
  margin-bottom: 4px;
}
.page-about .dashboard__value.data-number--secondary {
  color: var(--about-secondary);
}
.page-about .dashboard__label {
  font-size: 0.8rem;
  font-weight: 500;
  color: #B0B0B0;
  display: block;
  letter-spacing: 0.05em;
}
.page-about .dashboard__detail {
  font-size: 0.75rem;
  color: #999999;
  line-height: 1.4;
  opacity: 0;
  max-height: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, max-height 0.35s ease, padding-top 0.35s ease;
  overflow: hidden;
}
.page-about .dashboard__badge {
  display: flex;
  gap: 20px;
  align-items: center;
  justify-content: center;
  background: rgba(30, 144, 255, 0.06);
  border: 1px solid rgba(30, 144, 255, 0.2);
  padding: 20px 24px;
  clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px);
}
.page-about .dashboard__badge-img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  flex: 0 0 auto;
  display: block;
}
.page-about .dashboard__badge-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: center;
}
.page-about .dashboard__badge-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--about-secondary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.page-about .dashboard__badge-value {
  font-family: 'Consolas', 'Source Code Pro', monospace;
  font-size: 2rem;
  font-weight: 700;
  color: var(--about-secondary);
  line-height: 1.1;
}
.page-about .dashboard__badge-desc {
  font-size: 0.8rem;
  color: #B0B0B0;
}

/* ============================
   按钮
   ============================ */
.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.25s ease, box-shadow 0.3s ease;
  clip-path: polygon(4px 0, 100% 0, 100% calc(100% - 4px), calc(100% - 4px) 100%, 0 100%, 0 4px);
}
.page-about .btn--primary {
  background: var(--about-primary);
  color: #FFFFFF;
}
.page-about .btn--primary:hover,
.page-about .btn--primary:focus {
  background: #e03d00;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 69, 0, 0.3);
  outline: none;
}
.page-about .btn--primary:focus-visible {
  outline: 2px solid #FFFFFF;
  outline-offset: 2px;
}

/* ============================
   媒体查询：平板及以上
   ============================ */
@media (min-width: 640px) {
  .page-about .brand-statement__inner {
    flex-direction: row;
    align-items: center;
  }
  .page-about .brand-statement__text {
    order: 1;
  }
  .page-about .brand-statement__visual {
    order: 2;
    max-width: 360px;
  }
  .page-about .brand-statement__title {
    font-size: 3rem;
  }
  .page-about .capabilities__grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-about .capabilities__region {
    flex-direction: row;
    text-align: left;
  }
  .page-about .capabilities__region-text {
    align-items: flex-start;
    text-align: left;
  }
  .page-about .dashboard__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  .page-about .dashboard__value {
    font-size: 2.6rem;
  }
  .page-about .dashboard__badge {
    flex-direction: row;
    text-align: left;
  }
  .page-about .dashboard__badge-text {
    text-align: left;
  }
  .page-about .mission__text {
    font-size: 1.35rem;
  }
}

@media (min-width: 1024px) {
  .page-about .brand-statement__title {
    font-size: 3.6rem;
  }
  .page-about .brand-statement__visual {
    max-width: 400px;
  }
  .page-about .section-header__number {
    font-size: 4rem;
  }
  .page-about .section-header__title {
    font-size: 2.4rem;
  }
  .page-about .capabilities__grid {
    gap: 24px;
  }
  .page-about .dashboard__grid {
    gap: 24px;
  }
  .page-about .dashboard__value {
    font-size: 3rem;
  }
  .page-about .dashboard__badge-img {
    width: 100px;
    height: 100px;
  }
}

@media (min-width: 1280px) {
  .page-about .brand-statement__inner {
    gap: 60px;
  }
  .page-about .brand-statement__desc {
    font-size: 1.1rem;
  }
}