:root{
      --primary:#0B3D91;
      --primary-dark:#07295f;
      --accent:#29d3ff;
      --ink:#101827;
      --muted:#64748b;
      --line:#dbe4ef;
      --soft:#f4f7fb;
      --white:#fff;
      --shadow:0 18px 45px rgba(15,38,76,.12);
      --radius:10px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f7f9fc;font-family:-apple-system,BlinkMacSystemFont,"Noto Sans TC","Microsoft JhengHei",Arial,sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .topbar{background:#07152d;color:#c7d6ed;font-size:13px}
    .topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-links{display:flex;gap:22px}
    .topbar a:hover{color:#fff}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:inline-flex;align-items:center;gap:10px;flex:none;font-weight:800;font-size:18px;color:var(--primary-dark)}
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:center;justify-content:center;gap:4px;padding:0;margin:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:6px;padding:25px 13px;font-size:14px;white-space:nowrap;color:#25344c}
    .nav-link:hover,.nav-link:focus-visible{color:var(--primary)}
    .has-arrow:after{content:"";width:6px;height:6px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg) translateY(-2px)}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);width:310px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:0 0 10px 10px;box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.18s ease}
    .mega-menu{width:590px}
    .nav-item:after{content:"";position:absolute;left:0;right:0;top:100%;height:12px}
    .nav-item:hover .dropdown-panel,.nav-item:focus-within .dropdown-panel,.nav-item:hover .mega-menu,.nav-item:focus-within .mega-menu{opacity:1;visibility:visible;pointer-events:auto}
    .panel-title{margin:0 0 13px;color:var(--primary-dark);font-weight:800;font-size:15px}
    .panel-list{display:grid;gap:8px}
    .panel-list a{font-size:14px;padding:6px 0;border-bottom:1px solid #edf1f6}
    .panel-list a:hover{color:var(--primary)}
    .mega-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
    .mega-card{display:flex;align-items:center;gap:9px;min-width:0;padding:10px;border:1px solid #e5ebf3;border-radius:8px;background:#fbfdff}
    .mega-card:hover{border-color:var(--accent);background:#f3fbff}
    .mega-card img{width:32px;height:32px;object-fit:contain;border-radius:6px}
    .mega-card span{min-width:0}
    .mega-card strong,.mega-card small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .mega-card strong{font-size:13px}
    .mega-card small{color:var(--muted);font-size:11px}
    .mega-footer{display:block;margin-top:16px;padding-top:12px;border-top:1px solid var(--line);color:var(--primary);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:12px;white-space:nowrap}
    .member-btn{padding:9px 14px;border-radius:7px;background:var(--primary);color:#fff;font-size:13px;font-weight:700}
    .member-btn:hover{background:var(--primary-dark)}
    .hamburger{display:none;width:42px;height:42px;padding:9px;border:1px solid var(--line);border-radius:7px;background:#fff;cursor:pointer}
    .hamburger span{display:block;width:22px;height:2px;margin:5px auto;background:var(--primary-dark);transition:.2s}
    .hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
    .hamburger.active span:nth-child(2){opacity:0}
    .hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
    .drawer-overlay{position:fixed;inset:0;background:rgba(4,15,34,.54);opacity:0;visibility:hidden;z-index:40;transition:.2s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:min(390px,88vw);background:#fff;z-index:50;transform:translateX(100%);transition:.25s ease;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:14px;padding:18px 20px;border-bottom:1px solid var(--line);font-weight:800}
    .drawer-head a{margin-left:auto;color:var(--primary);font-size:14px}
    .drawer-close{width:32px;height:32px;border:0;background:#eef3f9;color:var(--primary-dark);border-radius:6px;cursor:pointer;font-size:22px;line-height:1}
    .drawer-menu{padding:10px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf1f6;background:none;text-align:left;color:var(--ink);font-size:15px;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--primary)}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:4px 0 8px 14px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
    .footer{margin-top:70px;background:#07152d;color:#b9c8dc}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:42px;padding:52px 0 42px}
    .footer .logo{color:#fff}
    .footer-brand p{max-width:310px;margin:18px 0 0;color:#aabbd1;font-size:14px}
    .footer h3{margin:0 0 15px;color:#fff;font-size:15px}
    .footer-links{display:grid;gap:8px;font-size:13px}
    .footer-links a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:18px 0;border-top:1px solid rgba(255,255,255,.12);font-size:12px;color:#8fa3bd}
    .category-page{padding:64px 0 10px}
    .category-hero{padding:30px 34px;border:1px solid #dbe7f3;border-radius:var(--radius);background:linear-gradient(135deg,#eef6ff,#fff);box-shadow:0 12px 30px rgba(11,61,145,.06)}
    .eyebrow{margin:0 0 8px;color:var(--primary);font-size:13px;font-weight:800;letter-spacing:.08em}
    .category-hero h1{margin:0;color:var(--primary-dark);font-size:clamp(30px,4vw,48px);line-height:1.2}
    .category-hero p{max-width:760px;margin:16px 0 0;color:#52657d;font-size:16px}
    .article-list{display:grid;gap:22px;margin-top:32px}
    .article-card{display:grid;grid-template-columns:310px minmax(0,1fr);min-width:0;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 24px rgba(20,47,82,.06);transition:.2s ease}
    .article-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#b9d3f0}
    .article-cover{min-height:220px;background:#e8eef6}
    .article-cover img{width:100%;height:100%;min-height:220px;object-fit:cover}
    .article-body{min-width:0;padding:24px 28px}
    .article-category{display:inline-block;margin-bottom:9px;color:var(--primary);font-size:12px;font-weight:800}
    .article-body h2{margin:0;font-size:23px;line-height:1.35;color:#172a47}
    .article-summary{margin:12px 0 16px;color:#596b82;font-size:15px;display:block;min-height:3em}
    .article-meta{display:flex;flex-wrap:wrap;gap:8px 18px;color:#7a899b;font-size:12px}
    .article-tags{margin-top:12px;color:#516b8a;font-size:12px}
    .article-tags strong{color:#334d6e}
    .read-more{display:inline-flex;margin-top:18px;color:var(--primary);font-size:14px;font-weight:800}
    .read-more:after{content:"→";margin-left:7px}
    .pagination{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:36px}
    .pagination a{min-width:38px;padding:7px 12px;border:1px solid var(--line);border-radius:6px;background:#fff;text-align:center;color:#53677f;font-size:14px}
    .pagination a:hover,.pagination a.active{border-color:var(--primary);background:var(--primary);color:#fff}
    @media (max-width:980px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{justify-content:space-between}
      .header-btns{margin-left:auto}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{padding:8px 0;align-items:flex-start}
      .topbar-links{display:grid;gap:0;text-align:right}
      .header-inner{height:68px}
      .member-btn{display:none}
      .category-page{padding-top:32px}
      .category-hero{padding:24px 20px}
      .category-hero h1{font-size:32px}
      .category-hero p{font-size:14px}
      .article-card{grid-template-columns:1fr}
      .article-cover,.article-cover img{min-height:190px;height:190px}
      .article-body{padding:20px}
      .article-body h2{font-size:20px}
      .footer-grid{grid-template-columns:1fr;gap:28px;padding:38px 0}
      .footer-bottom{display:grid;gap:8px}
    }