:root{
      --theme:#0B3D91;
      --ink:#17231e;
      --muted:#68746d;
      --mist:#f3f5f1;
      --line:#dfe5de;
      --white:#fff;
      --shadow:0 14px 40px rgba(23,35,30,.09);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f8faf7;font-family:"Microsoft YaHei","PingFang SC",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:auto}
    .topbar{background:#17231e;color:#dce6dc;font-size:13px}
    .topbar .container{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-right{display:flex;gap:20px}
    .topbar a:hover{color:#fff}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{min-height:76px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:10px;min-width:190px;font-weight:800;font-size:18px;color:var(--theme)}
    .logo img{width:36px;height:36px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:center;justify-content:center;gap:3px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:block;padding:27px 14px;font-size:14px;white-space:nowrap}
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .has-arrow:after{content:"";display:inline-block;width:6px;height:6px;margin:0 0 3px 7px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg)}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);width:310px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:0 0 12px 12px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s;pointer-events:none}
    .mega-menu{width:650px}
    .nav-item:before{content:"";position:absolute;left:0;right:0;top:100%;height:10px}
    .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);pointer-events:auto}
    .menu-title{margin:0 0 12px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.08em}
    .menu-list{display:grid;gap:8px}
    .menu-list a{font-size:13px;padding:5px 0;border-bottom:1px solid #edf1ec}
    .menu-list a:hover,.mega-menu a:hover{color:var(--theme)}
    .mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
    .mega-column{min-width:0}
    .broker-mini,.video-mini,.tool-mini,.product-mini{display:flex;align-items:center;gap:9px;padding:8px 0;border-bottom:1px solid #edf1ec;font-size:12px}
    .broker-mini img,.video-mini img,.product-mini img{width:34px;height:34px;object-fit:cover;border-radius:6px;background:var(--mist)}
    .tool-mini img{width:28px;height:28px;object-fit:contain}
    .broker-mini span,.video-mini span,.tool-mini span,.product-mini span{min-width:0;line-height:1.45}
    .broker-mini b,.tool-mini b{font-size:12px}
    .mega-footer{display:block!important;margin-top:12px;color:var(--theme);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
    .member-btn,.open-btn{padding:8px 13px;border-radius:6px;font-size:13px}
    .member-btn{color:var(--theme);border:1px solid #cdd8e9}
    .open-btn{background:var(--theme);color:#fff}
    .hamburger{display:none;border:0;background:none;padding:8px;cursor:pointer}
    .hamburger span{display:block;width:23px;height:2px;margin:5px 0;background:var(--ink);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(0,0,0,.42);z-index:40;opacity:0;visibility:hidden;transition:.25s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;right:0;top:0;bottom:0;width:min(380px,88vw);background:#fff;z-index:41;transform:translateX(100%);transition:.25s;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:14px;padding:20px;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:none;font-size:28px;line-height:1;cursor:pointer;color:var(--muted)}
    .drawer-menu{padding:10px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid #edf1ec;background:none;text-align:left;font-size:15px;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--muted)}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:5px 0 8px 15px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:13px}
    .footer{margin-top:70px;background:#17231e;color:#d7e1d8}
    .footer .container{padding:48px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
    .footer-brand{font-size:20px;font-weight:800;color:#fff;margin-bottom:12px}
    .footer p{margin:7px 0;color:#aebcb0;font-size:13px}
    .footer h3{margin:0 0 12px;color:#fff;font-size:15px}
    .footer-grid a{display:block;margin:7px 0;color:#aebcb0;font-size:13px}
    .footer-grid a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);color:#9eaca0;font-size:12px}

    .article-page{padding:54px 0 0}
    .article-shell{width:min(900px,100%);margin:auto}
    .article-head{text-align:center;padding:10px 0 34px}
    .article-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--theme);font-size:13px;font-weight:700;letter-spacing:.12em}
    .article-kicker:before{content:"";width:24px;height:1px;background:var(--theme)}
    .article-head h1{margin:14px 0 16px;font-size:clamp(30px,5vw,48px);line-height:1.25;letter-spacing:-.03em}
    .article-meta{display:flex;justify-content:center;flex-wrap:wrap;gap:16px;color:var(--muted);font-size:13px}
    .article-cover{overflow:hidden;border-radius:18px;background:#e8eee7;box-shadow:var(--shadow);margin-bottom:34px}
    .article-cover img{width:100%;max-height:470px;object-fit:cover}
    .article-content{background:#fff;border:1px solid var(--line);border-radius:18px;padding:clamp(24px,5vw,58px);min-width:0;max-width:100%;overflow-x:auto;box-shadow:0 8px 26px rgba(23,35,30,.04)}
    .article-content>*{max-width:100%}
    .article-content p{margin:0 0 1.25em;color:#34423a;font-size:16px}
    .article-content h2{margin:1.8em 0 .7em;color:#17231e;font-size:25px}
    .article-content h3{margin:1.5em 0 .6em;color:var(--theme);font-size:20px}
    .article-content img,.article-content video{height:auto;margin:20px auto;border-radius:10px}
    .article-content table{width:100%;border-collapse:collapse;display:block;overflow-x:auto}
    .article-content th,.article-content td{padding:10px;border:1px solid var(--line);white-space:nowrap}
    .article-tags{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:30px;padding-top:20px;border-top:1px solid var(--line);font-size:13px}
    .article-tags strong{color:var(--ink)}
    .article-tags a{padding:5px 10px;background:var(--mist);border-radius:20px;color:var(--theme)}
    .article-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0}
    .article-nav a{padding:18px;background:#fff;border:1px solid var(--line);border-radius:12px}
    .article-nav a:last-child{text-align:right}
    .article-nav small{display:block;margin-bottom:5px;color:var(--muted);font-size:12px}
    .article-nav strong{font-size:14px}
    .related{margin-top:52px}
    .related h2{font-size:24px;margin:0 0 18px}
    .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .related-card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:.2s}
    .related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .related-card img{width:100%;height:130px;object-fit:cover;background:var(--mist)}
    .related-card-body{padding:14px}
    .related-card h3{margin:0;font-size:15px;line-height:1.5}
    .related-card p{margin:8px 0 0;color:var(--muted);font-size:12px}
    @media(max-width:980px){
      .main-nav{display:none}
      .header-btns .member-btn,.header-btns .open-btn{display:none}
      .hamburger{display:block}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:600px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{padding:7px 0;align-items:flex-start}
      .topbar-right{flex-direction:column;gap:0;text-align:right}
      .header-inner{min-height:66px}
      .logo{min-width:0;font-size:16px}
      .logo img{width:31px;height:31px}
      .article-page{padding-top:30px}
      .article-head h1{font-size:30px}
      .article-meta{gap:7px 12px}
      .article-content{padding:24px 20px}
      .article-content p{font-size:15px}
      .article-nav{grid-template-columns:1fr}
      .article-nav a:last-child{text-align:left}
      .related-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr;gap:25px 18px}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:7px}
    }