/* ===== 页面专属：品牌概况 (about) ===== */
.page-about {
  --about-quote-size: 72px;
  --about-radar-size: min(420px, 85vw);
  --about-card-min-h: 260px;
}

/* 面包屑 */
.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs, 8px);
  padding: var(--spacing-md, 24px) 0 var(--spacing-lg, 32px);
  font-family: var(--font-mono, 'SF Mono', monospace);
  font-size: var(--font-size-small, 14px);
  color: var(--color-text-secondary, #5A6A7E);
  letter-spacing: 0.3px;
}
.page-about .breadcrumb a {
  color: var(--color-primary, #1A73E8);
  text-decoration: none;
  transition: color var(--transition-fast, 0.15s);
}
.page-about .breadcrumb a:hover {
  color: var(--color-primary-hover, #1557B0);
  text-decoration: underline;
}
.page-about .breadcrumb-sep {
  color: var(--color-light-border, #E8EDF2);
  font-weight: 300;
}
.page-about .breadcrumb [aria-current="page"] {
  font-weight: var(--font-weight-label, 500);
  color: var(--color-text, #1A1A2E);
}

/* ===== 品牌定位区 ===== */
.page-about .about-hero {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl, 40px);
  margin-bottom: var(--spacing-2xl, 56px);
  position: relative;
}

/* 左侧声明 */
.page-about .about-statement {
  position: relative;
  flex: 0 0 auto;
  padding: var(--spacing-lg, 32px) 0;
}
.page-about .about-statement-bg-wrap {
  position: absolute;
  inset: 0;
  overflow: hidden;
  border-radius: var(--radius-lg, 16px);
  opacity: 0.08;
  pointer-events: none;
  z-index: 0;
}
.page-about .about-statement-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-about .about-quote-mark {
  display: block;
  font-size: var(--about-quote-size, 72px);
  line-height: 0.8;
  font-weight: 900;
  color: var(--color-accent, #FF6F00);
  font-family: Georgia, 'Times New Roman', serif;
  opacity: 0.35;
  margin-bottom: -8px;
  z-index: 1;
  position: relative;
}
.page-about .about-keyline {
  font-size: var(--font-size-h2, 24px);
  font-weight: var(--font-weight-h2, 600);
  color: var(--color-primary, #1A73E8);
  letter-spacing: 1px;
  margin: 0 0 var(--spacing-sm, 16px);
  z-index: 1;
  position: relative;
}
.page-about .about-title {
  font-size: var(--font-size-h1, 42px);
  font-weight: var(--font-weight-h1, 800);
  line-height: var(--line-height-h1, 1.2);
  color: var(--color-dark, #2C3E50);
  margin: 0 0 var(--spacing-md, 24px);
  z-index: 1;
  position: relative;
}
.page-about .about-description {
  font-size: var(--font-size-body, 16px);
  line-height: var(--line-height-body, 1.6);
  color: var(--color-text-secondary, #5A6A7E);
  max-width: 520px;
  z-index: 1;
  position: relative;
}

/* 右侧雷达面板 */
.page-about .about-radar-panel {
  flex: 0 0 auto;
  background: var(--color-white, #FFFFFF);
  border-radius: var(--radius-lg, 16px);
  box-shadow: var(--shadow-card, 0 2px 12px rgba(0,0,0,0.06));
  padding: var(--spacing-md, 24px);
  transition: box-shadow var(--transition-base, 0.25s);
}
.page-about .about-radar-panel:hover {
  box-shadow: var(--shadow-card-hover, 0 8px 24px rgba(0,0,0,0.10));
}
.page-about .about-radar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm, 16px);
}
.page-about .about-radar-label {
  font-family: var(--font-mono, 'SF Mono', monospace);
  font-size: var(--font-size-xs, 12px);
  font-weight: var(--font-weight-label, 500);
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-secondary, #5A6A7E);
}
.page-about .about-radar-legend {
  display: flex;
  gap: var(--spacing-sm, 16px);
}
.page-about .about-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-small, 14px);
  font-weight: var(--font-weight-label, 500);
  color: var(--color-text, #1A1A2E);
}
.page-about .about-legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}
.page-about .about-radar-chart {
  display: flex;
  justify-content: center;
  align-items: center;
}
.page-about .about-radar-svg {
  width: var(--about-radar-size);
  height: auto;
  display: block;
  overflow: visible;
}
.page-about .about-radar-svg .about-radar-label-text {
  font-size: 13px;
  font-weight: 500;
  fill: var(--color-text-secondary, #5A6A7E);
  font-family: var(--font-family, 'Inter', sans-serif);
}
.page-about .about-radar-svg .about-radar-hit {
  cursor: pointer;
  transition: fill var(--transition-fast, 0.15s);
}
.page-about .about-radar-svg .about-radar-hit:hover {
  fill: rgba(26,115,232,0.12);
}
.page-about .about-radar-svg .about-radar-dot-home,
.page-about .about-radar-svg .about-radar-dot-away {
  transition: r var(--transition-fast, 0.15s);
}
.page-about .about-radar-svg .about-radar-point:hover .about-radar-dot-home,
.page-about .about-radar-svg .about-radar-point:hover .about-radar-dot-away {
  r: 7;
}
.page-about .about-radar-hint {
  text-align: center;
  font-size: var(--font-size-xs, 12px);
  color: var(--color-text-secondary, #5A6A7E);
  margin: var(--spacing-xs, 8px) 0 0;
  opacity: 0.6;
}

/* ===== 核心能力 ===== */
.page-about .about-capabilities {
  margin-bottom: var(--spacing-2xl, 56px);
}
.page-about .about-section-title {
  font-size: var(--font-size-h2, 24px);
  font-weight: var(--font-weight-h2, 600);
  color: var(--color-dark, #2C3E50);
  margin: 0 0 var(--spacing-lg, 32px);
  position: relative;
  padding-left: var(--spacing-md, 24px);
}
.page-about .about-section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.15em;
  width: 4px;
  height: 0.8em;
  background: var(--color-accent, #FF6F00);
  border-radius: 2px;
}
.page-about .about-capabilities-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md, 24px);
}

/* 能力卡片 */
.page-about .about-card {
  background: var(--color-white, #FFFFFF);
  border-radius: var(--radius-lg, 16px);
  box-shadow: var(--shadow-card, 0 2px 12px rgba(0,0,0,0.06));
  padding: var(--spacing-lg, 32px) var(--spacing-md, 24px);
  display: flex;
  flex-direction: column;
  min-height: var(--about-card-min-h);
  transition: transform var(--transition-base, 0.25s), box-shadow var(--transition-base, 0.25s);
}
.page-about .about-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover, 0 8px 24px rgba(0,0,0,0.10));
}
.page-about .about-card-icon-wrap {
  width: 80px;
  height: 80px;
  margin-bottom: var(--spacing-sm, 16px);
  flex-shrink: 0;
}
.page-about .about-card-icon {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  animation: about-spin 12s linear infinite;
}
@keyframes about-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.page-about .about-card:hover .about-card-icon {
  animation-duration: 3s;
}
.page-about .about-card-heading {
  font-size: 20px;
  font-weight: var(--font-weight-h2, 600);
  color: var(--color-dark, #2C3E50);
  margin: 0 0 var(--spacing-xs, 8px);
}
.page-about .about-card-text {
  font-size: var(--font-size-body, 16px);
  line-height: var(--line-height-body, 1.6);
  color: var(--color-text-secondary, #5A6A7E);
  flex: 1;
  margin: 0 0 var(--spacing-sm, 16px);
}
.page-about .about-card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-small, 14px);
  font-weight: var(--font-weight-label, 500);
  color: var(--color-primary, #1A73E8);
  text-decoration: none;
  transition: gap var(--transition-fast, 0.15s), color var(--transition-fast, 0.15s);
}
.page-about .about-card-link:hover {
  gap: 8px;
  color: var(--color-primary-hover, #1557B0);
  text-decoration: underline;
}

/* ===== 数据可靠性 ===== */
.page-about .about-reliability {
  margin-bottom: var(--spacing-2xl, 56px);
}
.page-about .about-reliability-inner {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl, 40px);
  background: var(--color-light, #F5F7FA);
  border-radius: var(--radius-lg, 16px);
  padding: var(--spacing-lg, 32px) var(--spacing-md, 24px);
}
.page-about .about-reliability-text {
  flex: 1;
}
.page-about .about-reliability-text p {
  font-size: var(--font-size-body, 16px);
  line-height: var(--line-height-body, 1.6);
  color: var(--color-text, #1A1A2E);
  margin: 0 0 var(--spacing-sm, 16px);
}
.page-about .about-reliability-text strong {
  color: var(--color-accent, #FF6F00);
  font-weight: 600;
}
.page-about .about-reliability-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--spacing-md, 24px);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs, 8px);
}
.page-about .about-reliability-list li {
  position: relative;
  padding-left: 24px;
  font-size: var(--font-size-body, 16px);
  color: var(--color-text-secondary, #5A6A7E);
  line-height: 1.6;
}
.page-about .about-reliability-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  background: var(--color-success, #27AE60);
  border-radius: 50%;
}
.page-about .about-reliability-visual {
  flex: 0 0 auto;
  position: relative;
  border-radius: var(--radius-md, 12px);
  overflow: hidden;
}
.page-about .about-reliability-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: var(--radius-md, 12px);
}
.page-about .about-reliability-badge {
  position: absolute;
  top: var(--spacing-sm, 16px);
  right: var(--spacing-sm, 16px);
  background: var(--color-accent, #FF6F00);
  color: var(--color-white, #FFFFFF);
  font-size: var(--font-size-xs, 12px);
  font-weight: var(--font-weight-label, 500);
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 8px rgba(255,111,0,0.3);
}

/* 可信声明 */
.page-about .about-trust {
  text-align: center;
  padding: var(--spacing-lg, 32px) 0 var(--spacing-2xl, 56px);
}
.page-about .trust-statement {
  font-size: var(--font-size-small, 14px);
  color: var(--color-text-secondary, #5A6A7E);
  font-family: var(--font-mono, 'SF Mono', monospace);
  letter-spacing: 0.3px;
  background: var(--color-primary-light, rgba(26,115,232,0.08));
  display: inline-block;
  padding: var(--spacing-sm, 16px) var(--spacing-lg, 32px);
  border-radius: 40px;
  max-width: 100%;
}

/* ===== 桌面端 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--spacing-xl, 40px);
  }
  .page-about .about-statement {
    flex: 0 0 42%;
    padding: var(--spacing-xl, 40px) 0;
  }
  .page-about .about-radar-panel {
    flex: 0 0 54%;
    padding: var(--spacing-lg, 32px);
  }
  .page-about .about-capabilities-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg, 32px);
  }
  .page-about .about-reliability-inner {
    flex-direction: row;
    align-items: center;
    padding: var(--spacing-xl, 40px) var(--spacing-lg, 32px);
  }
  .page-about .about-reliability-text {
    flex: 0 0 48%;
  }
  .page-about .about-reliability-visual {
    flex: 0 0 48%;
  }
  .page-about .about-quote-mark {
    font-size: 96px;
  }
  .page-about .about-title {
    font-size: var(--font-size-h1, 42px);
  }
}

@media (min-width: 1024px) {
  .page-about .about-statement {
    flex: 0 0 40%;
  }
  .page-about .about-radar-panel {
    flex: 0 0 56%;
  }
  .page-about .about-reliability-inner {
    padding: var(--spacing-2xl, 56px) var(--spacing-xl, 40px);
  }
}