/* Newslist Page Styles */
/* 
  REM计算说明：
  - 桌面端（>900px）: 基于1920px设计稿，1rem = 100px * (当前宽度/1920)
  - 移动端（≤900px）: 基于750px设计稿，1rem = 100px * (当前宽度/750)
*/

/* Container */
.index.newslist .container {
  width: 82%; /* 1200px on 1920px screen */
  margin: 0 auto;
}

/* News Header */
.newslist .news-header {
  padding: 0.8rem 0 0.6rem; /* 80px 0 60px on 1920px screen */
  text-align: left;
}

.newslist .news-title {
  font-size:var(--font-size-13); /* 80px on 1920px screen */
  font-weight: 300;
  color:var(--color-white);
  margin: 0;
  font-family: 'Source Han Sans CN', sans-serif;
   width: 82%; /* 1200px on 1920px screen */
  margin: 0 auto;
}

/* Featured News Section */
.newslist .featured-news {
  background: #000;
  background-image:url(../images/newslist/news-header-bg.png) ;
  background-position: center ;
  background-size: 100% ;
  background-repeat: no-repeat;
  padding-top:1.9rem;
  overflow: hidden;

}

.newslist .featured-article {
  display: flex;
  align-items: stretch;
  min-height: 5rem; /* 500px on 1920px screen */
}

.newslist .featured-content {
  flex: 1;
  padding: 0.8rem  1.17rem 0.8rem 0; /* 80px 60px on 1920px screen */
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: transform 0.5s ease;
}

.newslist .featured-content .date {
  font-size:var( --font-size-3); /* 18px on 1920px screen */
  color: var(--color-yellow);
  margin-bottom: 0.2rem; /* 20px on 1920px screen */
  font-weight: 300;
}

.newslist .featured-content .title {
  font-size:var(--font-size-11); /* 48px on 1920px screen */
  font-weight: 300;
  color: var(--color-white);
  line-height: 0.55rem;
  margin: 0 0 0.4rem 0; /* 0 0 40px 0 on 1920px screen */
  display: -webkit-box;
  -webkit-line-clamp:3;
  line-clamp:3;
  -webkit-box-orient: vertical;
  box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

.newslist .read-more-btn {
  background: transparent;
  border: 0.02rem solid #ffffff; /* 2px on 1920px screen */
  color: var(--color-white);
  padding: 0.17rem 0.55rem; /* 12px 30px on 1920px screen */
  font-size: var(--font-size-1); /* 14px on 1920px screen */
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  align-self: flex-start;
  text-transform: uppercase;
}

.newslist .read-more-btn:hover {
  background: var(--color-white);
  color: var(--color-black);
  transform: translateY(-2px);
}

.newslist .featured-image {
  flex: 1;
  position: relative;
  overflow: hidden;
  width: 9.31rem;
  width: 5.43rem;
}

.newslist .featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.newslist .featured-image:hover img {
  transform: scale(1.05);
}

/* News Grid Section */
.newslist .news-grid {
  padding: 0.8rem 0; /* 80px 0 on 1920px screen */
}

.newslist .news-grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(4.05rem, 3fr)); /* minmax(350px, 1fr) on 1920px screen */
  gap: 0.4rem; /* 40px on 1920px screen */
  margin-top: 0; /* 40px on 1920px screen */
  margin-bottom: 1.22rem;
}

/* News Item */
.newslist .news-item {
  overflow: hidden;
  transition: all 0.3s ease;
  position: relative;
}
.newslist .news-item a{position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1;}

.newslist .news-item:hover {
  transform: translateY(-0.08rem); /* -8px on 1920px screen */
}

.newslist .news-image {
  position: relative;
  overflow: hidden;
  height: 3.33rem; /* 240px on 1920px screen */
}

.newslist .news-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.newslist .news-item:hover .news-image img {
  transform: scale(1.08);
}

.newslist .news-content {
  padding: 0.3rem 0; /* 30px on 1920px screen */
  height: 2.4rem;
}

.newslist .news-content .date {
  font-size: var(--font-size-2); /* 14px on 1920px screen */
  color: var(--color-yellow);
  margin-bottom: 0.2rem; /* 15px on 1920px screen */
}

.newslist .news-content .title {
  font-size: var(--font-size-3); /* 18px on 1920px screen */
  color: var(--color-black);
  line-height: 0.32rem;
  margin: 0 0 0.37rem 0; /* 0 0 20px 0 on 1920px screen */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-clamp: 2;
  overflow: hidden;
}

.newslist .read-more {
  background: transparent;
  border: none;
  color: var(--color-gray-54585a);
  font-size: var(--font-size-1); /* 14px on 1920px screen */
  font-weight: 500;
  cursor: pointer;
  padding: 0;
  transition: color 0.3s ease;
  text-transform: uppercase;
}
.newslist .read-more img {
  height: 0.15rem;
  margin-top: 0.02rem;
}

/* Load More Section */
.newslist .load-more-section {
  text-align: center;
  margin-top: 0.8rem; /* 80px on 1920px screen */
  padding: 0.6rem 0; /* 60px 0 on 1920px screen */
}

.newslist .load-more-btn {
  background: transparent;
  border: 0.02rem solid var(--color-black); /* 2px on 1920px screen */
  color: var(--color-black);
  padding: 0.17rem 0.55rem; /* 17px 55px on 1920px screen */
  font-size: var(--font-size-1); /* 14px on 1920px screen */
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  position: relative;
  min-width: 2.5rem; /* 250px on 1920px screen */
  height: 0.51rem; /* 51px on 1920px screen */
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.newslist .load-more-btn:hover {
  background: var(--color-black);
  color: var(--color-white);
  transform: translateY(-0.02rem); /* -2px on 1920px screen */
}

.newslist .load-more-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.newslist .load-more-btn .btn-text {
  transition: opacity 0.3s ease;
}

.newslist .load-more-btn.loading .btn-text {
  opacity: 0;
}

/* 移动端适配 - 统一断点 ≤900px */
@media (max-width: 900px) {
  /* 基础布局适配 */
  .index.newslist .container {
    width: 90%;
    max-width: 7rem;
    padding: 0.66rem 0.3rem 0; 
    
  }
  
  .newslist .news-header {
    padding: 1rem 0 0.8rem;
    text-align: center;
  }
  
  .newslist .news-title {
    width: 90%;
    max-width: 7rem;
    padding: 0 0.2rem;
  }
  
  .newslist .featured-news {
    padding-top: 1.2rem;
    background-size: cover;
  }
  
  .newslist .featured-article {
    flex-direction: column;
    min-height: auto;
    gap: 0.3rem;
  }
  
  .newslist .featured-content {
    padding:1.05rem  0.4rem 0.6rem;
    order: 2;
  }
  
  .newslist .featured-content .title {
    font-size: var(--font-size-11);
    line-height: 0.65rem;
    margin-bottom: 0.86rem;
    -webkit-line-clamp: 3;
    line-clamp:3;
  }
  
  .newslist .featured-content .date {
    font-size: var(--font-size-5);
    margin-bottom: 0.3rem;
    color: var(--color-yellow);
  }
  
  .newslist .read-more-btn {
    padding: 0.3rem 0.94rem;
    font-size: var(--font-size-2);
    border: 0.02rem solid var(--color-white);
  }
  
  .newslist .featured-image {
    width: 100vw;
    order: 1;
    border-radius: 0.08rem;
    overflow: hidden;
    margin-left: -0.3rem;
  }
  
  .newslist .news-grid {
    padding: 0;
  }
  
  .newslist .news-grid-container {
    grid-template-columns: 1fr;
    gap: 1.21rem;
    margin-top: 1.27rem;
  }
  
  .newslist .news-item {
    background: #fff;
    border-radius: 0.08rem;
    overflow: hidden;
  }
  
  .newslist .news-image {
    height: 3.2rem;
  }
  
  .newslist .news-content {
    padding: 0.4rem 0;
    height: auto;
    min-height: 2rem;
  }
  
  .newslist .news-content .date {
    font-size: var(--font-size-2);
    margin-bottom: 0.3rem;
    color: var(--color-yellow);
  }
  
  .newslist .news-content .title {
    font-size: var(--font-size-2);
    line-height: 0.48rem;
    margin-bottom: 0.35rem;
    -webkit-line-clamp: 2;
    line-clamp: 2;
  }
  
  .newslist .read-more {
    font-size: 0.24rem;
    color: var(--color-gray-54585a);
  }
  .newslist .read-more img {
        height: 0.20rem;
  }
  
  .newslist .load-more-btn {
    padding:0.3rem 0.94rem;
    font-size:var(--font-size-2);
    height: 0.8rem;
    border-radius: 0.04rem;
  }
  
  .newslist .load-more-section {
    margin-top: 0.8rem;
    padding: 0.6rem 0;
  }
  
  /* 触摸优化和交互效果 */
  .newslist .news-item {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    /* tap-highlight-color: rgba(0, 0, 0, 0.1); */ /* 标准属性，部分浏览器支持 */
  }
  
  .newslist .news-item:active {
    transform: translateY(0.02rem);
    transition: transform 0.1s ease;
  }
  
  .newslist .read-more-btn,
  .newslist .read-more,
  .newslist .load-more-btn {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.2);
    /* tap-highlight-color: rgba(0, 0, 0, 0.2); */ /* 标准属性，部分浏览器支持 */
    touch-action: manipulation;
  }
  
  .newslist .read-more-btn:active,
  .newslist .load-more-btn:active {
    transform: scale(0.98);
    transition: transform 0.1s ease;
  }
  
  .newslist .news-content .title {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
  }
  
  .newslist .news-grid-container {
    -webkit-overflow-scrolling: touch;
  }
  
  /* 菜单样式 */
  .menu .menu-wrapper {
    left: 0.3rem;
  }
  
  .menu .global-enquire-button {
    right: 0.3rem;
    width: 0.8rem;
  }
  
  .menu .global-menu-button {
    font-size: 0.24rem;
  }
  
  .menu .returnIndex {
    width: 0.3rem;
    height: 0.3rem;
  }
  
  .menu .header-search {
    display: none;
  }
  
  .menu .primary-nav .logo {
    width: 1.4rem;
    height: 0.25rem;
  }
  
  .menu .primary-nav .bg {
    height: 0.8rem;
    background-color: rgba(0, 0, 0, 0.3);
  }
  
  /* 二级菜单 */
  .menu .secondaryMenu .lBox {
    width: 100%;
    font-size: 0.28rem;
  }
  
  .menu .secondaryMenu .lBox .m a {
    font-size: 0.28rem;
    height: 0.9rem;
    line-height: 0.9rem;
  }
  
  .menu .secondaryMenu .lBox .m.level1 {
    right: 0.5rem;
    top: 2rem;
  }
  
  .menu .secondaryMenu .lBox .level2 .m.carlevel {
    top: 0.6rem;
    width: 90%;
    left: 50%;
    transform: translateX(-50%);
  }
  
  .menu .secondaryMenu .lBox .level2 .m.carlevel a:not(.return) {
    width: 100%;
    display: block;
    height: auto;
    position: relative;
    margin-bottom: 0.6rem;
    border-radius: 0.08rem;
    overflow: hidden;
  }
  
  .menu .secondaryMenu .lBox .level2 .m.carlevel a:not(.return) img {
    width: 100%;
    height: auto;
    margin-right: 0;
  }
  
  .menu .secondaryMenu .lBox .level2 .m.carlevel a:not(.return) span {
    position: absolute;
    bottom: 0.2rem;
    right: 0.3rem;
    line-height: 0.4rem;
    opacity: 1;
    background: rgba(0, 0, 0, 0.7);
    padding: 0.1rem 0.2rem;
    border-radius: 0.04rem;
    font-size: 0.24rem;
  }
  
  /* 页脚 */
  .footer-main {
    display: none;
  }
  
  .footer-top {
    flex-direction: column;
    gap: 0.4rem;
    padding: 0.4rem 0.3rem;
  }
  
  .footer-logo img {
    width: 1.8rem;
  }
  
  .footer-social {
    gap: 0.4rem;
  }
  
  .social-icon {
    width: 0.4rem;
    height: 0.4rem;
  }
  
  .footer-bottom {
    padding: 0.3rem;
    text-align: center;
  }
  
  .legal-links {
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.2rem;
  }
  
  .legal-links a {
    font-size: 0.24rem;
  }
  
  .separator {
    font-size: 0.24rem;
  }
  
  /* 浮动按钮 */
  .floatButton {
    right: 0.2rem;
    bottom: 2rem;
  }
  
  .floatButton li {
    width: 0.6rem;
    height: 0.6rem;
    margin: 0.1rem 0;
    border-radius: 0.06rem;
  }
  
  .floatButton li img {
    width: 0.28rem;
    height: 0.28rem;
  }
}


/* Animation Effects */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(0.3rem); /* 30px on 1920px screen */
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.newslist .news-item {
  animation: fadeInUp 0.6s ease forwards;
}

.newslist .news-item:nth-child(1) { animation-delay: 0.1s; }
.newslist .news-item:nth-child(2) { animation-delay: 0.2s; }
.newslist .news-item:nth-child(3) { animation-delay: 0.3s; }
.newslist .news-item:nth-child(4) { animation-delay: 0.4s; }
.newslist .news-item:nth-child(5) { animation-delay: 0.5s; }
.newslist .news-item:nth-child(6) { animation-delay: 0.6s; }
.newslist .news-item:nth-child(7) { animation-delay: 0.7s; }
.newslist .news-item:nth-child(8) { animation-delay: 0.8s; }

/* Smooth scroll behavior */
html {
  scroll-behavior: smooth;
}


/* Loading Spinner */
.newslist .loading-spinner {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.newslist .spinner {
  width: 0.2rem; /* 20px on 1920px screen */
  height: 0.2rem; /* 20px on 1920px screen */
  border: 0.02rem solid transparent; /* 2px on 1920px screen */
  border-top: 0.02rem solid var(--color-black);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.newslist .load-more-btn:hover .spinner {
  border-top-color: var(--color-white);
}

/* Load More Error Message */
.newslist .load-more-error {
  display: none;
  color: #e74c3c;
  font-size: var(--font-size-1);
  margin-top: 0.2rem;
  text-align: center;
  padding: 0.1rem;
}

/* Focus states for accessibility */
.newslist .read-more-btn:focus,
.newslist .read-more:focus,
.newslist .news-item:focus,
.newslist .load-more-btn:focus {
  outline: 0.02rem solid #007acc; /* 2px on 1920px screen */
  outline-offset: 0.02rem; /* 2px on 1920px screen */
}