body {
  background-color: #ffffff;
  color: #1a1a1a;
  overflow-x: hidden;
}

/* 科技背景纹理 */
.tech-bg {
  background-image: radial-gradient(#d4d4d8 1px, transparent 1px);
  background-size: 30px 30px;
  opacity: 0.5;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0) 100%);
}

.glass-nav {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

/* 文章卡片悬停特效 */
.article-card:hover .card-arrow {
  transform: translateX(4px) translateY(-4px);
  color: #2563eb;
}

.article-card:hover {
  border-color: #000;
}