/* ============================================
   关于我们页专用样式 - about.html
   ============================================ */

/* ---------- 页面横幅 ---------- */
.page-banner {
  position: relative;
  padding: 160px 0 80px;
  background: var(--color-primary);
  overflow: hidden;
}

.page-banner__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 50%, rgba(212, 168, 83, 0.06) 0%, transparent 60%),
    linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
}

.page-banner__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 50px 50px;
}

.page-banner__content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.page-banner__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.page-banner__desc {
  font-size: var(--text-lg);
  color: var(--color-gray-400);
  margin-bottom: var(--space-lg);
}

/* 面包屑导航 */
.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--color-gray-500);
}

.breadcrumb a {
  color: var(--color-gray-400);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb span {
  color: var(--color-white);
}

/* ---------- 公司简介 ---------- */
.about-intro__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: flex-start;
}

.about-intro__image-box {
  position: sticky;
  top: 120px;
}

.about-intro__image-placeholder {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  border-radius: var(--radius-2xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  position: relative;
  overflow: hidden;
}

.about-intro__image-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(212,168,83,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212,168,83,0.05) 1px, transparent 1px);
  background-size: 30px 30px;
}

.about-intro__image-placeholder span {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-white);
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.about-intro__image-placeholder small {
  color: var(--color-accent);
  font-size: var(--text-sm);
  letter-spacing: 2px;
  position: relative;
  z-index: 1;
}

/* 信息卡片 */
.about-intro__info-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.about-intro__info-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-gray-100);
}

.about-intro__info-card--accent {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-color: transparent;
}

.about-intro__info-card--accent strong,
.about-intro__info-card--accent span {
  color: var(--color-white);
}

.about-intro__info-card strong {
  display: block;
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-primary);
}

.about-intro__info-card span {
  font-size: var(--text-xs);
  color: var(--color-gray-500);
}

.about-intro__content .section__subtitle { display: inline-flex; }
.about-intro__content h2 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-xl);
}
.about-intro__content p {
  font-size: var(--text-base);
  line-height: 1.9;
  color: var(--color-gray-600);
}
.about-intro__content p strong {
  color: var(--color-primary);
  font-weight: 600;
}

/* ---------- 使命愿景价值观 ---------- */
.about-values__grid {
  margin-top: var(--space-2xl);
}

.about-values__card {
  text-align: center;
  padding: var(--space-2xl);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xl);
  transition: all var(--transition-normal);
}

.about-values__card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(212, 168, 83, 0.25);
  transform: translateY(-4px);
}

.about-values__icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(212, 168, 83, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  color: var(--color-accent);
}

.about-values__card h3 {
  font-size: var(--text-xl);
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.about-values__card p {
  font-size: var(--text-sm);
  color: var(--color-gray-400);
  line-height: 1.8;
  margin-bottom: 0;
}

.about-values__card p strong {
  color: var(--color-accent-light);
}

/* ---------- 时间轴 ---------- */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-gray-200), var(--color-accent));
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-3xl);
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__marker {
  position: absolute;
  left: -40px;
  top: 4px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-white);
  border: 3px solid var(--color-accent);
  transition: all var(--transition-normal);
}

.timeline__dot--active {
  background: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(212, 168, 83, 0.2);
  animation: pulse-glow 2s ease-in-out infinite;
}

.timeline__item:hover .timeline__dot {
  transform: scale(1.3);
  box-shadow: var(--shadow-glow);
}

.timeline__content {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-xl) var(--space-2xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-100);
  transition: all var(--transition-normal);
  position: relative;
}

.timeline__content:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.timeline__year {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-accent-dark);
  background: rgba(212, 168, 83, 0.1);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-sm);
}

.timeline__content h4 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
}

.timeline__content p {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ---------- 核心优势 ---------- */
.about-strengths__grid {
  margin-top: var(--space-2xl);
}

.about-strengths__item {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  border-radius: var(--radius-xl);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition-normal);
}

.about-strengths__item:hover {
  border-color: var(--color-accent);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.about-strengths__number {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-accent);
  opacity: 0.25;
  line-height: 1;
  margin-bottom: var(--space-md);
  transition: opacity var(--transition-normal);
}

.about-strengths__item:hover .about-strengths__number {
  opacity: 0.6;
}

.about-strengths__item h4 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
}

.about-strengths__item p {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .about-intro__inner {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .about-intro__image-box {
    position: static;
    max-width: 480px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .page-banner {
    padding: 120px 0 60px;
  }

  .about-intro__info-cards {
    grid-template-columns: 1fr;
  }

  .grid--3 .about-values__card {
    padding: var(--space-xl);
  }

  .timeline {
    padding-left: 32px;
  }

  .timeline::before {
    left: 10px;
  }

  .timeline__marker {
    left: -32px;
  }

  .timeline__content {
    padding: var(--space-lg);
  }

  .grid--4 {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .grid--4 {
    grid-template-columns: 1fr;
  }
}