:root{
      --primary-color:#C91F37;
      --primary-light:#F8E0E6;
      --text-dark:#333333;
      --text-gray:#666666;
      --bg-gray:#F5F5F5;
    }
    *{margin:0;padding:0;box-sizing:border-box;font-family:"Microsoft YaHei",Arial,sans-serif;}
    body{color:var(--text-dark);background:#fff;line-height:1.6;}
    .header{background:var(--primary-color);color:#fff;padding:20px 0;text-align:center;}
    .header h1{font-size:2.2rem;margin-bottom:8px;}
    .header p{font-size:1.1rem;opacity:.9;}
    .container{display:flex;width:1200px;margin:30px auto;gap:30px;}
    .sidebar{width:280px;position:sticky;top:20px;align-self:flex-start;background:var(--bg-gray);border-radius:8px;padding:20px;}
    .sidebar h3{color:var(--primary-color);font-size:1.3rem;margin-bottom:15px;border-bottom:2px solid var(--primary-light);padding-bottom:8px;}
    .sidebar-nav{list-style:none;}
    .sidebar-nav li{margin-bottom:12px;}
    .sidebar-nav a{text-decoration:none;color:var(--text-gray);font-size:1rem;display:block;padding:6px 10px;border-radius:4px;transition:all .3s;}
    .sidebar-nav a:hover,.sidebar-nav a.active{background:var(--primary-light);color:var(--primary-color);font-weight:500;}
    .content{flex:1;padding:10px;}
    .module{margin-bottom:50px;padding:25px;background:#fff;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.08);}
    .module-title{color:var(--primary-color);font-size:1.8rem;margin-bottom:20px;border-bottom:3px solid var(--primary-light);padding-bottom:10px;}
    .submodule{margin-bottom:30px;}
    .submodule-title{font-size:1.3rem;color:var(--text-dark);margin:15px 0;padding-left:12px;border-left:4px solid var(--primary-color);}
    .timeline{position:relative;padding-left:30px;margin-top:15px;}
    .timeline::before{content:'';position:absolute;left:8px;top:0;bottom:0;width:2px;background:var(--primary-light);}
    .timeline-item{position:relative;margin-bottom:25px;}
    .timeline-item::before{content:'';position:absolute;left:-30px;top:5px;width:18px;height:18px;border-radius:50%;background:var(--primary-color);}
    .timeline-year{font-weight:bold;color:var(--primary-color);margin-bottom:8px;}
    .product-list,.field-list{display:flex;flex-wrap:wrap;gap:15px;margin-top:10px;}
    .product-item,.field-item{background:var(--primary-light);color:var(--primary-color);padding:8px 15px;border-radius:20px;font-size:.95rem;}
    .culture-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:20px;}
    .culture-card{background:var(--bg-gray);padding:20px;border-radius:8px;text-align:center;}
    .culture-card h4{color:var(--primary-color);margin-bottom:12px;font-size:1.1rem;}
    .gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:12px;}
    .gallery-item{background:var(--bg-gray);border-radius:8px;overflow:hidden;display:flex;align-items:center;justify-content:center;aspect-ratio:4/3;}
    .gallery-item img{max-width:100%;max-height:100%;object-fit:cover;display:block;}
    @media (max-width:1200px){
      .container{width:90%;flex-direction:column;}
      .sidebar{width:100%;position:static;margin-bottom:20px;}
      .culture-grid{grid-template-columns:1fr;}
      .gallery-grid{grid-template-columns:repeat(2,1fr);}
    }
    @media (max-width:768px){
      .header h1{font-size:1.8rem;}
      .module-title{font-size:1.5rem;}
      .gallery-grid{grid-template-columns:1fr;}
    }