/* ===== 品牌概况页专属样式 .page-about ===== */
.page-about {
  --about-glow: rgba(138, 43, 226, 0.15);
  --about-glow-strong: rgba(138, 43, 226, 0.25);
  --about-accent: #FF5A00;
  --about-neon: #8A2BE2;
  --about-card-bg: #1A2A3E;
  --about-text-muted: #B0B0B0;
  --about-border: rgba(192, 192, 192, 0.2);
  --about-timeline-width: 3px;
  display: block;
  background: var(--color-primary, #0B1B2D);
  color: var(--color-text, #FFFFFF);
  font-family: var(--font-body, 'Inter', system-ui, sans-serif);
  overflow-x: hidden;
}

/* ========== 面包屑 ========== */
.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.6rem;
  font-size: 0.85rem;
  margin-bottom: 1.2rem;
  color: var(--about-text-muted);
}
.page-about .breadcrumb-link {
  color: var(--about-accent);
  text-decoration: none;
  transition: opacity var(--transition, 0.25s ease);
}
.page-about .breadcrumb-link:hover,
.page-about .breadcrumb-link:focus-visible {
  opacity: 0.75;
  outline: 2px solid var(--about-accent);
  outline-offset: 2px;
}
.page-about .breadcrumb-sep {
  color: var(--about-text-muted);
  user-select: none;
}
.page-about .breadcrumb-current {
  color: var(--color-text, #FFFFFF);
  font-weight: 600;
}

/* ========== 通用标题修饰 ========== */
.page-about .about-section-title {
  position: relative;
  display: inline-block;
  font-family: var(--font-heading, 'Impact', 'Arial Black', sans-serif);
  font-size: 2.25rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-text, #FFFFFF);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
}
.page-about .about-section-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--about-accent), var(--about-neon));
  clip-path: polygon(0 0, 100% 0, 95% 100%, 0 100%);
}

/* ========== 品牌概述区（首屏） ========== */
.page-about .about-hero {
  position: relative;
  padding: 2rem 0 3rem;
  background: radial-gradient(ellipse 80% 60% at 20% 40%, var(--about-glow), transparent 70%),
              var(--color-primary, #0B1B2D);
  overflow: hidden;
}
.page-about .about-hero-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
}
.page-about .about-hero-image {
  flex-shrink: 0;
  width: 100%;
  max-width: 400px;
  position: relative;
  z-index: 1;
}
.page-about .about-hero-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: contain;
  border-radius: var(--radius-card, 6px);
  clip-path: polygon(0 0, 100% 0, 97% 100%, 0 95%);
  box-shadow: 0 8px 32px rgba(138, 43, 226, 0.2);
  transition: transform var(--transition, 0.25s ease);
}
.page-about .about-hero-img:hover {
  transform: scale(1.01);
}
.page-about .about-hero-text {
  flex: 1;
  min-width: 0;
  z-index: 1;
}
.page-about .about-hero-title {
  font-family: var(--font-heading, 'Impact', 'Arial Black', sans-serif);
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  color: var(--color-text, #FFFFFF);
  margin: 0 0 1rem;
  transform: skewX(-2deg);
  background: linear-gradient(135deg, #FFFFFF 60%, var(--about-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-about .about-hero-desc {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--about-text-muted);
  margin: 0 0 1rem;
  max-width: 600px;
}
.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.page-about .about-hero-line {
  position: absolute;
  right: -5%;
  top: 15%;
  width: 200px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--about-neon), transparent);
  transform: rotate(25deg);
  opacity: 0.4;
  pointer-events: none;
}

/* ========== 核心价值区（时间线） ========== */
.page-about .about-values {
  position: relative;
  padding: 3rem 0 2.5rem;
  background: radial-gradient(ellipse 70% 50% at 70% 60%, var(--about-glow-strong), transparent 70%),
              var(--color-primary, #0B1B2D);
}
.page-about .about-values-intro {
  font-size: 1.05rem;
  color: var(--about-text-muted);
  margin-bottom: 2.5rem;
  max-width: 520px;
}
.page-about .about-timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
}
.page-about .about-timeline-item {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  position: relative;
  padding-left: 2rem;
}
.page-about .about-timeline-marker {
  position: absolute;
  left: 0;
  top: 0.5rem;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 1.5rem;
}
.page-about .about-timeline-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--about-accent);
  border: 3px solid var(--about-neon);
  box-shadow: 0 0 12px rgba(138, 43, 226, 0.5);
  flex-shrink: 0;
  z-index: 1;
  transition: transform var(--transition, 0.25s ease);
}
.page-about .about-timeline-item:hover .about-timeline-dot {
  transform: scale(1.3);
}
.page-about .about-timeline-line {
  width: var(--about-timeline-width);
  flex: 1;
  background: linear-gradient(180deg, var(--about-accent), var(--about-neon));
  opacity: 0.4;
  margin-top: 4px;
}
.page-about .about-timeline-line-last {
  background: transparent;
}
.page-about .about-timeline-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--about-card-bg);
  border: 1px solid var(--about-border);
  border-radius: var(--radius-card, 6px);
  clip-path: polygon(0 0, 100% 0, 99% 100%, 0 97%);
  transition: box-shadow var(--transition, 0.25s ease), transform var(--transition, 0.25s ease);
}
.page-about .about-timeline-card:hover {
  box-shadow: 0 6px 24px rgba(138, 43, 226, 0.2);
  transform: translateY(-2px);
}
.page-about .about-timeline-card-text {
  flex: 1;
  min-width: 0;
}
.page-about .about-tag {
  display: inline-block;
  background: var(--about-neon);
  color: #FFFFFF;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  clip-path: polygon(0 0, 100% 0, 94% 100%, 0 90%);
  margin-bottom: 0.5rem;
  letter-spacing: 0.04em;
}
.page-about .about-timeline-heading {
  font-family: var(--font-heading, 'Impact', 'Arial Black', sans-serif);
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: var(--color-text, #FFFFFF);
  transform: skewX(-1deg);
}
.page-about .about-timeline-card-text p {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--about-text-muted);
  margin: 0;
}
.page-about .about-timeline-card-img {
  flex-shrink: 0;
  width: 100%;
  max-width: 280px;
  margin: 0 auto;
}
.page-about .about-timeline-card-img img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--radius, 4px);
  clip-path: polygon(2% 0, 100% 0, 98% 100%, 0 98%);
}
.page-about .img-placeholder {
  background: rgba(138, 43, 226, 0.1);
  border: 1px dashed var(--about-border);
  border-radius: var(--radius, 4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1rem;
  min-height: 120px;
  gap: 0.5rem;
}
.page-about .about-data-placeholder,
.page-about .about-sync-placeholder {
  background: rgba(255, 90, 0, 0.06);
  border-color: rgba(255, 90, 0, 0.2);
}
.page-about .about-data-icon,
.page-about .about-sync-icon {
  font-size: 2rem;
  line-height: 1;
}
.page-about .about-data-label,
.page-about .about-sync-label {
  font-size: 0.85rem;
  color: var(--about-text-muted);
  letter-spacing: 0.02em;
}
.page-about .about-values-line {
  position: absolute;
  left: -3%;
  bottom: 10%;
  width: 180px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--about-accent), transparent);
  transform: rotate(-18deg);
  opacity: 0.25;
  pointer-events: none;
}

/* ========== 服务承诺区 ========== */
.page-about .about-commitment {
  padding: 3rem 0 2.5rem;
  background: radial-gradient(ellipse 60% 50% at 30% 50%, var(--about-glow), transparent 70%),
              var(--color-primary, #0B1B2D);
}
.page-about .about-commitment-intro {
  font-size: 1.05rem;
  color: var(--about-text-muted);
  margin-bottom: 2rem;
  max-width: 480px;
}
.page-about .about-commitment-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.page-about .about-commitment-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1.5rem;
  background: var(--about-card-bg);
  border: 1px solid var(--about-border);
  border-radius: var(--radius-card, 6px);
  clip-path: polygon(0 0, 100% 0, 98% 100%, 0 96%);
  transition: box-shadow var(--transition, 0.25s ease), transform var(--transition, 0.25s ease);
}
.page-about .about-commitment-card:hover {
  box-shadow: 0 6px 28px rgba(138, 43, 226, 0.18);
  transform: translateY(-2px);
}
.page-about .about-commitment-icon-wrap {
  width: 80px;
  height: 80px;
  flex-shrink: 0;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--about-neon);
  clip-path: polygon(10% 0, 100% 0, 90% 100%, 0 100%);
}
.page-about .about-commitment-icon {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-about .about-commitment-icon-placeholder {
  width: 80px;
  height: 80px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(138, 43, 226, 0.08);
  border-radius: var(--radius, 4px);
  clip-path: polygon(8% 0, 100% 0, 92% 100%, 0 92%);
}
.page-about .about-commitment-svg {
  display: block;
  width: 48px;
  height: 48px;
}
.page-about .about-commitment-heading {
  font-family: var(--font-heading, 'Impact', 'Arial Black', sans-serif);
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0;
  color: var(--color-text, #FFFFFF);
  transform: skewX(-1deg);
}
.page-about .about-commitment-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--about-text-muted);
  margin: 0;
}
.page-about .about-commitment-contact {
  list-style: none;
  padding: 0;
  margin: 0.25rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.95rem;
}
.page-about .about-contact-label {
  font-weight: 600;
  color: var(--about-accent);
}
.page-about .about-contact-link {
  color: var(--color-text, #FFFFFF);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition, 0.25s ease);
}
.page-about .about-contact-link:hover,
.page-about .about-contact-link:focus-visible {
  border-bottom-color: var(--about-accent);
  outline: none;
}

/* ========== 品牌背景区 ========== */
.page-about .about-background {
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--about-border);
}
.page-about .about-background-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}
.page-about .about-bg-title {
  font-family: var(--font-heading, 'Impact', 'Arial Black', sans-serif);
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  color: var(--color-text, #FFFFFF);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.page-about .about-bg-text {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--about-text-muted);
  margin: 0 0 1rem;
}
.page-about .about-bg-meta {
  margin-top: 1rem;
}
.page-about .about-bg-icp {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--about-text-muted);
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--about-border);
  clip-path: polygon(0 0, 100% 0, 97% 100%, 0 90%);
  background: rgba(138, 43, 226, 0.05);
}

/* ========== 内链引导区 ========== */
.page-about .about-links {
  padding: 1.5rem 0 3rem;
}
.page-about .about-links-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.page-about .about-links-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: var(--about-card-bg);
  border: 1px solid var(--about-border);
  border-radius: var(--radius-card, 6px);
  clip-path: polygon(0 0, 100% 0, 98% 100%, 0 95%);
  text-decoration: none;
  color: var(--color-text, #FFFFFF);
  transition: background var(--transition, 0.25s ease), transform var(--transition, 0.25s ease);
}
.page-about .about-links-card:hover,
.page-about .about-links-card:focus-visible {
  background: rgba(138, 43, 226, 0.12);
  transform: translateX(4px);
  outline: none;
}
.page-about .about-links-icon {
  font-size: 1.4rem;
  line-height: 1;
  flex-shrink: 0;
}
.page-about .about-links-label {
  flex: 1;
  font-weight: 600;
  font-size: 1rem;
}
.page-about .about-links-arrow {
  font-size: 1.2rem;
  color: var(--about-accent);
  transition: transform var(--transition, 0.25s ease);
}
.page-about .about-links-card:hover .about-links-arrow {
  transform: translateX(4px);
}

/* ========== 响应式：平板 640px+ ========== */
@media (min-width: 640px) {
  .page-about .about-hero {
    padding: 3rem 0 4rem;
  }
  .page-about .about-hero-inner {
    flex-direction: row;
    align-items: center;
  }
  .page-about .about-hero-image {
    max-width: 360px;
  }
  .page-about .about-hero-title {
    font-size: 3rem;
  }
  .page-about .about-timeline-item {
    flex-direction: row;
    padding-left: 2.5rem;
  }
  .page-about .about-timeline-card {
    flex-direction: row;
    align-items: center;
    padding: 1.5rem;
  }
  .page-about .about-timeline-card-img {
    max-width: 220px;
  }
  .page-about .about-commitment-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-about .about-links-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ========== 响应式：桌面 960px+ ========== */
@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 4rem 0 5rem;
  }
  .page-about .about-hero-image {
    max-width: 400px;
  }
  .page-about .about-hero-title {
    font-size: 3.5rem;
  }
  .page-about .about-hero-desc {
    font-size: 1.05rem;
  }
  .page-about .about-section-title {
    font-size: 2.75rem;
  }
  .page-about .about-timeline {
    gap: 2rem;
  }
  .page-about .about-timeline-card {
    padding: 2rem;
  }
  .page-about .about-timeline-card-img {
    max-width: 260px;
  }
  .page-about .about-commitment-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
  .page-about .about-commitment-card {
    padding: 1.75rem;
  }
  .page-about .about-background {
    padding: 3rem 0 3.5rem;
  }
  .page-about .about-links {
    padding: 2rem 0 4rem;
  }
}

/* ========== 窄屏保护 ========== */
@media (max-width: 480px) {
  .page-about .about-hero-title {
    font-size: 1.9rem;
  }
  .page-about .about-hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .page-about .about-hero-actions .btn {
    text-align: center;
  }
  .page-about .about-timeline-item {
    padding-left: 1.5rem;
  }
  .page-about .about-timeline-card {
    padding: 1rem;
  }
  .page-about .about-timeline-card-img {
    max-width: 100%;
  }
  .page-about .about-commitment-icon-wrap,
  .page-about .about-commitment-icon-placeholder {
    width: 60px;
    height: 60px;
  }
}

/* ========== 打印优化 ========== */
@media print {
  .page-about {
    background: #FFFFFF !important;
    color: #111 !important;
  }
  .page-about .about-hero,
  .page-about .about-values,
  .page-about .about-commitment,
  .page-about .about-background,
  .page-about .about-links {
    background: #FFFFFF !important;
  }
  .page-about .about-hero-title {
    -webkit-text-fill-color: #111 !important;
    background: none !important;
    color: #111 !important;
  }
  .page-about .about-hero-desc,
  .page-about .about-values-intro,
  .page-about .about-timeline-card-text p,
  .page-about .about-commitment-desc,
  .page-about .about-bg-text {
    color: #333 !important;
  }
  .page-about .speed-line {
    display: none !important;
  }
  .page-about .about-commitment-card,
  .page-about .about-timeline-card,
  .page-about .about-links-card {
    border-color: #ccc !important;
    box-shadow: none !important;
    clip-path: none !important;
  }
}