:root{
      --theme:#0B3D91;
      --ink:#142033;
      --muted:#6b778b;
      --line:#e5eaf1;
      --soft:#f5f8fc;
      --white:#fff;
      --shadow:0 14px 40px rgba(20,45,80,.08);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f7f9fc;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.75}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;height:auto}
    .container{width:min(1180px,calc(100% - 36px));margin:0 auto}
    .topbar{background:#0f1b2d;color:#cdd8e8;font-size:13px}
    .topbar .container{min-height:38px;display:flex;justify-content:space-between;align-items:center;gap:20px}
    .topbar a{color:#e5edf8;margin-left:18px}
    .header{position:relative;z-index:20;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);box-shadow:0 3px 18px rgba(19,42,76,.04)}
    .header-inner{height:78px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:10px;min-width:190px;color:#10203a;font-weight:800;font-size:18px}
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;justify-content:center;align-items:center;gap:3px;padding:0;margin:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:block;padding:26px 13px;color:#34445c;font-size:14px;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--theme)}
    .has-arrow:after{content:"⌄";font-size:12px;margin-left:5px;color:#94a0b2}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%) translateY(8px);width:290px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s ease}
    .mega-menu{width:600px}
    .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;transform:translateX(-50%) translateY(0)}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .drop-title,.mega-title{font-weight:800;color:#1b3154;margin-bottom:12px}
    .drop-list{display:grid;gap:9px}
    .drop-list a{display:block;color:#526176;font-size:13px;line-height:1.5}
    .drop-list a:hover,.mega-card:hover{color:var(--theme)}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
    .mega-card{min-height:86px;padding:11px;border:1px solid #edf0f5;border-radius:10px;display:flex;flex-direction:column;gap:4px;color:#31435d}
    .mega-card img{width:28px;height:28px;object-fit:contain}
    .mega-card strong{font-size:13px}
    .mega-card small{font-size:11px;color:#78869a;line-height:1.4}
    .mega-footer{display:block;text-align:right;margin-top:15px;color:var(--theme);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
    .member-btn{font-size:13px;color:#56657a}
    .open-btn{padding:9px 14px;color:#fff;background:var(--theme);border-radius:8px;font-size:13px}
    .hamburger{display:none;border:0;background:transparent;padding:8px;cursor:pointer}
    .hamburger span{display:block;width:23px;height:2px;background:#20334e;margin:5px 0;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{display:none;position:fixed;inset:0;background:rgba(8,20,38,.48);z-index:40}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;right:0;top:0;bottom:0;width:min(360px,88vw);background:#fff;z-index:50;transform:translateX(100%);transition:.25s ease;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:70px;padding:0 20px;display:flex;align-items:center;gap:15px;border-bottom:1px solid var(--line);font-weight:700}
    .drawer-head>a{margin-left:auto;color:var(--theme);font-size:14px}
    .drawer-close{border:0;background:transparent;font-size:28px;color:#65748a;cursor:pointer}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid #eef1f5;background:none;text-align:left;color:#263954;font-size:15px;font-family:inherit;cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:#93a0b0}
    .drawer-toggle.active:after{content:"－"}
    .drawer-submenu{display:none;padding:5px 0 8px 14px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:#68788e;font-size:13px}
    .article-page{padding:56px 0 76px}
    .article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:30px;align-items:start}
    .article-main,.article-sidebar{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
    .article-main{padding:38px 44px}
    .article-kicker{display:inline-flex;padding:5px 11px;border-radius:20px;background:#eaf1fb;color:var(--theme);font-size:13px;font-weight:700}
    .article-title{margin:16px 0 13px;color:#142b4d;font-size:clamp(28px,4vw,44px);line-height:1.3;letter-spacing:.01em}
    .article-meta{display:flex;flex-wrap:wrap;gap:15px;color:var(--muted);font-size:13px;border-bottom:1px solid var(--line);padding-bottom:22px}
    .article-cover{margin:28px 0;border-radius:12px;overflow:hidden;background:#edf3fa;text-align:center}
    .article-cover img{display:block;width:100%;max-height:430px;object-fit:cover}
    .article-content{min-width:0;max-width:100%;overflow-x:auto;color:#35445a;font-size:16px}
    .article-content p{margin:0 0 1.25em}
    .article-content h2,.article-content h3{color:#183a68;line-height:1.45;margin:1.7em 0 .7em}
    .article-content blockquote{margin:1.5em 0;padding:15px 20px;border-left:4px solid var(--theme);background:#f3f7fc;color:#53647a}
    .article-content table{max-width:100%;display:block;overflow-x:auto;border-collapse:collapse}
    .article-content table td,.article-content table th{padding:9px 12px;border:1px solid var(--line);white-space:nowrap}
    .article-content iframe{max-width:100%}
    .article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px;padding-top:20px;border-top:1px solid var(--line);color:#64738a;font-size:13px}
    .article-tags a{padding:5px 10px;background:#f1f5fa;border-radius:20px;color:var(--theme)}
    .article-pager{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:30px;padding-top:22px;border-top:1px solid var(--line)}
    .pager-item{padding:13px 15px;background:#f7f9fc;border-radius:10px;font-size:13px}
    .pager-item strong{display:block;color:#7b8798;font-size:12px;margin-bottom:4px}
    .pager-item.next{text-align:right}
    .article-sidebar{padding:24px;position:sticky;top:20px}
    .sidebar-title{margin:0 0 18px;color:#17365f;font-size:19px}
    .like-list{display:grid;gap:15px}
    .like-card{padding-bottom:15px;border-bottom:1px solid var(--line)}
    .like-card:last-child{border-bottom:0;padding-bottom:0}
    .like-card a{display:block;color:#2f425d;font-weight:700;font-size:14px;line-height:1.55}
    .like-card p{margin:5px 0 0;color:#8290a1;font-size:12px;line-height:1.5}
    .footer{background:#101d30;color:#b9c5d6;padding:48px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .footer-brand strong{display:block;color:#fff;font-size:20px;margin-bottom:12px}
    .footer p{margin:7px 0;color:#9dabc0;font-size:13px;line-height:1.8}
    .footer h3{margin:0 0 14px;color:#fff;font-size:15px}
    .footer-grid>div:not(.footer-brand) a,.footer-grid>div:not(.footer-brand) span{display:block;margin:7px 0;color:#aebbd0;font-size:13px}
    .footer-grid a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:35px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);font-size:12px;color:#8493aa}
    @media (max-width:980px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{height:68px}
      .logo{min-width:0}
      .member-btn{display:none}
      .article-layout{grid-template-columns:1fr}
      .article-sidebar{position:static}
    }
    @media (max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{align-items:flex-start;flex-direction:column;gap:0;padding:8px 0}
      .topbar a{margin:0 12px 0 0}
      .open-btn{display:none}
      .article-page{padding:28px 0 50px}
      .article-main{padding:25px 20px}
      .article-title{font-size:29px}
      .article-content{font-size:15px}
      .article-pager{grid-template-columns:1fr}
      .pager-item.next{text-align:left}
      .footer-grid{grid-template-columns:1fr 1fr;gap:25px 18px}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:8px}
    }