/* ========================================
   news.css - 新闻中心页面样式
   ======================================== */

.news-filter {
  position: sticky;
  top: var(--header-height);
  z-index: 50;
  background: white;
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}
.news-filter-inner {
  max-width: 98vw;
  margin: 0 auto;
  padding: 0 1vw;
  display: flex;
  gap: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.news-filter-inner::-webkit-scrollbar { display: none; }
.news-filter-btn {
  padding: 18px 28px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  white-space: nowrap;
  flex-shrink: 0;
  cursor: pointer;
  transition: var(--transition);
}
.news-filter-btn:hover, .news-filter-btn.active { background: transparent; color: var(--primary); border-bottom-color: var(--primary); }

/* 新闻列表 */
.news-list-section { padding: 80px 0; }
.news-list-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }

.news-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: white;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  cursor: pointer;
}
.news-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-5px); }
.news-card-img { position: relative; height: 200px; overflow: hidden; }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.news-card:hover .news-card-img img { transform: scale(1.08); }
.news-card-category {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 50px;
  color: white;
}
.news-card-category.company { background: var(--primary); }
.news-card-category.industry { background: var(--secondary-dark); }
.news-card-category.whitepaper { background: var(--accent); }

.news-card-body { padding: 24px; }
.news-card-date { font-size: 13px; color: var(--text-light); margin-bottom: 8px; }
.news-card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}
.news-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.news-card-link:hover { gap: 10px; }
/* 将链接点击区域扩展到整张卡片 */
.news-card-link::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
}

/* 白皮书区域 */
.whitepaper-section { padding: 80px 0; background: var(--bg-light); }
.whitepaper-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.whitepaper-card {
  background: white;
  border-radius: var(--radius-md);
  padding: 30px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.whitepaper-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-5px); border-color: var(--primary); }
.whitepaper-tag { display: inline-block; padding: 4px 12px; background: rgba(255,109,0,0.1); color: var(--accent); font-size: 12px; font-weight: 600; border-radius: 50px; margin-bottom: 14px; }
.whitepaper-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; line-height: 1.4; }
.whitepaper-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 20px; }

/* 分页 */
.pagination { display: flex; justify-content: center; gap: 6px; margin-top: 50px; }
.page-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: var(--transition);
}
.page-btn:hover, .page-btn.active { background: var(--primary); color: white; border-color: var(--primary); }

/* 订阅板块 */
.subscribe-section { padding: 60px 0; background: linear-gradient(135deg, var(--primary) 0%, #003D7A 100%); }
.subscribe-content { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.subscribe-text h3 { font-size: 26px; font-weight: 800; color: white; margin-bottom: 8px; }
.subscribe-text p { font-size: 16px; color: rgba(255,255,255,0.8); }
.subscribe-form { display: flex; gap: 12px; flex-shrink: 0; }
.subscribe-input {
  width: 320px;
  padding: 14px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 15px;
  background: rgba(255,255,255,0.95);
}
.subscribe-input:focus { outline: none; box-shadow: 0 0 0 3px rgba(255,255,255,0.3); }

/* 热门标签 */
.tags-section { padding: 60px 0; background: var(--bg-light); }
.tags-title { font-size: 20px; font-weight: 700; color: var(--text-primary); margin-bottom: 24px; text-align: center; }
.tags-cloud { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.tag-item {
  padding: 8px 20px;
  background: white;
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 14px;
  color: var(--text-secondary);
  transition: var(--transition);
}
.tag-item:hover { background: var(--primary); color: white; border-color: var(--primary); }

/* 响应式 */
@media (max-width: 1024px) {
  .news-list-grid { grid-template-columns: repeat(2, 1fr); }
  .whitepaper-grid { grid-template-columns: repeat(2, 1fr); }
  .subscribe-content { flex-direction: column; text-align: center; }
  .subscribe-form { flex-direction: column; }
  .subscribe-input { width: 100%; }
}
@media (max-width: 768px) {
  .news-list-grid { grid-template-columns: 1fr; }
  .whitepaper-grid { grid-template-columns: 1fr; }
  .news-filter-btn { padding: 14px 20px; font-size: 14px; }
  .subscribe-text h3 { font-size: 22px; }
}