:root{
    --blue:#0b3d8f;
    --blue-d:#072a63;
    --blue-l:#1a56c4;
    --orange:#f5821f;
    --orange-d:#d96c0f;
    --ink:#1a2332;
    --gray:#5a6675;
    --line:#e4e8ef;
    --bg:#f6f8fb;
  }
  *{margin:0;padding:0;box-sizing:border-box;}
  body{
    color:var(--ink);background:var(--bg);line-height:1.7;
    -webkit-font-smoothing:antialiased;
  }
  a{text-decoration:none;color:inherit;}
  img{display:block;max-width:100%;}
  .wrap{width: 100%;    max-width: clamp(300px, 90%, 1680px); margin:0 auto;padding:0 24px;}

  /* ===== 顶部通栏 ===== */
  .page-head{
    background:linear-gradient(135deg,var(--blue-d) 0%,var(--blue) 55%,var(--blue-l) 100%);
    color:#fff;padding:56px 0 48px;position:relative;overflow:hidden;
  }
  .page-head::before{
    content:"";position:absolute;inset:0;
    background:
      radial-gradient(circle at 85% 20%,rgba(245,130,31,.26),transparent 42%),
      radial-gradient(circle at 10% 90%,rgba(255,255,255,.08),transparent 40%);
  }
  .page-head::after{
    content:"";position:absolute;inset:0;
    background-image:
      linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
    background-size:52px 52px;
  }
  .page-head .wrap{position:relative;z-index:2;}
  .breadcrumb{font-size:13px;color:rgba(255,255,255,.75);margin-bottom:18px;}
  .breadcrumb a:hover{color:#fff;}
  .breadcrumb span{margin:0 8px;opacity:.6;}
  .page-head h1{font-size:34px;font-weight:700;margin-bottom:12px;}
  .page-head p{font-size:15px;color:rgba(255,255,255,.85);max-width:720px;}

  /* ===== 分类标签 ===== */
  .cat-nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;}
  .cat-list{display:flex;gap:8px;overflow-x:auto;padding:14px 0;scrollbar-width:none;}
  .cat-list::-webkit-scrollbar{display:none;}
  .cat-list a{
    flex-shrink:0;font-size:14px;font-weight:600;color:var(--gray);
    padding:8px 20px;border-radius:24px;border:1px solid var(--line);
    transition:all .25s;
  }
  .cat-list a:hover{color:var(--orange);border-color:var(--orange);}
  .cat-list a.active{background:var(--orange);color:#fff;border-color:var(--orange);}

  /* ===== 版式：左侧主区 + 右侧边栏 ===== */
  .layout{display:grid;grid-template-columns:1fr 320px;gap:32px;padding:40px 0 60px;}
  .main{}

  /* ===== 头条（大卡） ===== */
  .headline{
    background:#fff;border-radius:16px;overflow:hidden;
    box-shadow:0 8px 24px rgba(11,61,143,.08);
    display:grid;grid-template-columns:1.1fr 1fr;
    margin-bottom:36px;transition:box-shadow .3s;
  }
  .headline:hover{box-shadow:0 16px 40px rgba(11,61,143,.14);}
  .hl-media{
    position:relative;aspect-ratio:4/3;
    background:linear-gradient(145deg,#eef2f8,#dfe7f3);
    display:flex;align-items:center;justify-content:center;overflow:hidden;
  }
  .hl-media svg{width:56%;height:auto;transition:transform .5s;}
  .headline:hover .hl-media svg{transform:scale(1.08);}
  .hl-tag{
    position:absolute;top:16px;left:16px;
    font-size:12px;font-weight:700;color:#fff;
    background:var(--orange);padding:5px 14px;border-radius:6px;letter-spacing:.5px;
  }
  .hl-body{padding:32px 34px;display:flex;flex-direction:column;}
  .hl-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--gray);margin-bottom:14px;}
  .hl-meta .cat{color:var(--orange);font-weight:600;}
  .hl-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--gray);}
  .hl-title{font-size:22px;font-weight:700;line-height:1.4;margin-bottom:14px;color:var(--ink);}
  .hl-title:hover{color:var(--blue);}
  .hl-desc{font-size:14px;color:var(--gray);flex:1;margin-bottom:20px;}
  .hl-more{align-self:flex-start;font-size:14px;font-weight:600;color:var(--blue);}
  .hl-more .arrow{display:inline-block;margin-left:4px;transition:transform .25s;}
  .hl-more:hover .arrow{transform:translateX(4px);}

  /* ===== 区块标题 ===== */
  .block-title{
    display:flex;align-items:center;justify-content:space-between;
    margin-bottom:22px;padding-bottom:12px;border-bottom:2px solid var(--line);
  }
  .block-title h2{font-size:20px;font-weight:700;color:var(--ink);position:relative;padding-left:14px;}
  .block-title h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:5px;height:20px;border-radius:3px;background:var(--orange);}
  .block-title .more{font-size:13px;color:var(--gray);}
  .block-title .more:hover{color:var(--orange);}

  /* ===== 新闻列表 ===== */
  .news-list{display:flex;flex-direction:column;gap:20px;margin-bottom:36px;}
  .news-item{
    display:grid;grid-template-columns:280px 1fr;gap:22px;
    background:#fff;border-radius:12px;overflow:hidden;
    box-shadow:0 4px 14px rgba(11,61,143,.06);
    transition:transform .3s,box-shadow .3s;
  }
  .news-item:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(11,61,143,.12);}
  .ni-media{
    position:relative;aspect-ratio:800/533;
    background:linear-gradient(145deg,#eef2f8,#dfe7f3);
    display:flex;align-items:center;justify-content:center;overflow:hidden;
  }
  .ni-media svg{width:52%;height:auto;transition:transform .45s;}
  .news-item:hover .ni-media svg{transform:scale(1.08);}
  .ni-tag{
    position:absolute;top:10px;left:10px;font-size:11px;font-weight:700;color:#fff;
    background:var(--blue);padding:3px 10px;border-radius:5px;
  }
  .ni-body{padding:20px 22px 20px 0;display:flex;flex-direction:column;}
  .ni-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--gray);margin-bottom:10px;}
  .ni-meta .cat{color:var(--orange);font-weight:600;}
  .ni-title{font-size:17px;font-weight:700;line-height:1.4;margin-bottom:10px;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .ni-title:hover{color:var(--blue);}
  .ni-desc{font-size:13.5px;color:var(--gray);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1;margin-bottom:12px;}
  .ni-foot{display:flex;align-items:center;gap:16px;font-size:12.5px;color:var(--gray);}
  .ni-foot .views{display:flex;align-items:center;gap:4px;}
  .ni-foot .views .ico{color:var(--orange);font-size:14px;}

  /* ===== 分页 ===== */
  .pagination{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:8px;}


  /* ===== 侧边栏 ===== */
  .sidebar{display:flex;flex-direction:column;gap:28px;}
  .side-box{background:#fff;border-radius:14px;padding:24px;box-shadow:0 4px 14px rgba(11,61,143,.06);}
  .side-title{
    font-size:16px;font-weight:700;color:var(--ink);
    padding-bottom:12px;margin-bottom:16px;border-bottom:2px solid var(--line);
    position:relative;padding-left:12px;
  }
  .side-title::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:16px;border-radius:2px;background:var(--orange);}

  /* 搜索 */
  .search-form{display:flex;gap:8px;}
  .search-form input{
    flex:1;height:42px;padding:0 14px;border:1px solid var(--line);
    border-radius:8px;font-size:14px;
  }
  .search-form input:focus{outline:none;border-color:var(--blue);}
  .search-form button{
    height:42px;padding:0 18px;border:none;background:var(--blue);
    color:#fff;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:background .25s;
  }
  .search-form button:hover{background:var(--blue-d);}

  /* 热门文章 */
  .hot-list{display:flex;flex-direction:column;gap:14px;}
  .hot-item{display:flex;gap:12px;align-items:flex-start;}
  .hot-num{
    flex-shrink:0;width:26px;height:26px;border-radius:6px;
    background:var(--bg);color:var(--gray);font-size:14px;font-weight:700;
    display:flex;align-items:center;justify-content:center;
  }
  .hot-item:nth-child(1) .hot-num{background:var(--orange);color:#fff;}
  .hot-item:nth-child(2) .hot-num{background:var(--blue);color:#fff;}
  .hot-item:nth-child(3) .hot-num{background:var(--blue-l);color:#fff;}
  .hot-text h4{font-size:14px;font-weight:600;line-height:1.4;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .hot-text h4:hover{color:var(--orange);}
  .hot-text .date{font-size:12px;color:var(--gray);margin-top:4px;}

  /* 分类统计 */
  .cat-stat{display:flex;flex-direction:column;gap:2px;}
  .cat-stat a{
    display:flex;align-items:center;justify-content:space-between;
    padding:10px 12px;border-radius:8px;font-size:13.5px;color:var(--ink);
    transition:background .2s;
  }
  .cat-stat a:hover{background:var(--bg);color:var(--orange);}
  .cat-stat .count{font-size:12px;color:var(--gray);background:var(--bg);padding:2px 10px;border-radius:12px;}
  .cat-stat a:hover .count{background:var(--orange);color:#fff;}

  /* 推荐产品 */
  .rec-list{display:flex;flex-direction:column;gap:12px;}
  .rec-item{
    display:flex;gap:12px;align-items:center;
    padding:10px;border:1px solid var(--line);border-radius:10px;
    transition:border-color .25s,transform .25s;
  }
  .rec-item:hover{border-color:var(--orange);transform:translateY(-2px);}
  .rec-thumb{
    width:56px;height:56px;flex-shrink:0;border-radius:8px;
    background:linear-gradient(145deg,#eef2f8,#dfe7f3);
    display:flex;align-items:center;justify-content:center;
  }
  .rec-thumb .ico{font-size:26px;color:var(--blue);}
  .rec-text h4{font-size:14px;font-weight:700;color:var(--ink);}
  .rec-text p{font-size:12px;color:var(--gray);margin-top:2px;}

  /* ===== 响应式 ===== */
  @media(max-width:960px){
    .layout{grid-template-columns:1fr;padding:32px 0 50px;}
    .sidebar{order:-1;}
    .headline{grid-template-columns:1fr;}
    .hl-media{aspect-ratio:16/9;}
  }
  @media(max-width:640px){
    .news-item{grid-template-columns:1fr;}
    .ni-media{aspect-ratio:16/9;}
    .ni-body{padding:18px 20px 22px;}
    .page-head h1{font-size:26px;}
    .hl-body{padding:24px;}
    .hl-title{font-size:19px;}
  }