/* ============================================================
   cards.css - 卡片组件
   各类卡片样式
   ============================================================ */

.card {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card__body {
  padding: 20px;
}

.card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.card__meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-bottom: 12px;
}

.card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* 图文卡片 */
.card--media {
  display: flex;
  flex-direction: column;
}

.card--media .card__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.card--media .card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.card--media:hover .card__media img {
  transform: scale(1.05);
}

.card--media .card__body {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card--media .card__title {
  font-size: var(--font-size-md);
  line-height: 1.5;
}

.card--media .card__text {
  flex: 1;
  margin-top: auto;
}

/* 业务板块卡片 */
.biz-card {
  position: relative;
  background-color: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  cursor: pointer;
}

.biz-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-6px);
}

.biz-card__media {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.biz-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.biz-card:hover .biz-card__media img {
  transform: scale(1.08);
}

.biz-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.6) 100%);
}

.biz-card__icon {
  position: absolute;
  top: 20px;
  left: 20px;
  width: 48px;
  height: 48px;
  background-color: rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 24px;
  transition: all var(--transition-base);
}

.biz-card:hover .biz-card__icon {
  background-color: var(--color-primary);
  color: #fff;
}

.biz-card__body {
  padding: 24px;
}

.biz-card__title {
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: 10px;
  transition: color var(--transition-base);
}

.biz-card:hover .biz-card__title {
  color: var(--color-primary);
}

.biz-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.biz-card__more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 14px;
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  transition: gap var(--transition-base);
}

.biz-card:hover .biz-card__more {
  gap: 8px;
}

/* 数字数据卡片 */
.stat-card {
  text-align: center;
  padding: 32px 20px;
}

.stat-card__number {
  font-family: var(--font-serif);
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
  line-height: 1.2;
  margin-bottom: 8px;
}

.stat-card__number-suffix {
  font-size: var(--font-size-xl);
  margin-left: 4px;
}

.stat-card__label {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}