:root{--blue:#0B3D91;--ink:#172532;--muted:#687781;--mist:#f4f7f6;--line:#dce6e5;--green:#517363;--white:#fff;--shadow:0 18px 45px rgba(20,46,54,.10)}
    *{box-sizing:border-box}
    html,body{margin:0;padding:0;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;background:#f7f9f8}
    body{line-height:1.6}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .topbar{height:38px;background:#173b36;color:#dce9e3;font-size:12px}
    .topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between}
    .topbar-right{display:flex;gap:22px}
    .header{height:78px;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);position:relative;z-index:20}
    .header-inner{height:100%;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:10px;min-width:190px;color:#173b36;font-weight:800;font-size:18px}
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:center;justify-content:center;gap:4px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:block;padding:27px 13px;color:#30443f;font-size:14px;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--blue)}
    .has-arrow:after{content:"⌄";font-size:12px;margin-left:5px;color:#7c8b86}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%) translateY(8px);width:300px;background:#fff;border:1px solid var(--line);border-radius:0 0 12px 12px;box-shadow:var(--shadow);padding:18px;opacity:0;visibility:hidden;transition:.2s;z-index:30}
    .mega-menu{width:650px}
    .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;top:-10px;left:0;right:0;height:10px}
    .menu-title{margin:0 0 11px;color:#173b36;font-size:13px;font-weight:800}
    .menu-list{display:grid;gap:6px}
    .menu-list a{display:block;padding:6px 8px;border-radius:6px;color:#4b5b58;font-size:13px}
    .menu-list a:hover{background:#eef5f1;color:var(--blue)}
    .mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
    .broker-mini,.video-mini,.tool-mini,.product-mini{display:flex;gap:9px;padding:8px 0;border-bottom:1px solid #edf1ef;font-size:12px;color:#53635e}
    .broker-mini img{width:30px;height:30px;object-fit:contain}
    .video-mini img,.product-mini img{width:58px;height:38px;object-fit:cover;border-radius:5px}
    .tool-mini img{width:28px;height:28px;object-fit:contain}
    .broker-mini b,.tool-mini b{color:#263d38}
    .mega-footer{display:block;margin-top:13px;color:var(--blue);font-weight:700;font-size:13px}
    .header-btns{display:flex;align-items:center;gap:9px;white-space:nowrap}
    .member-btn,.open-btn{padding:8px 13px;border-radius:5px;font-size:13px}
    .member-btn{color:var(--blue);border:1px solid #cbd9e7}
    .open-btn{background:var(--blue);color:#fff}
    .hamburger{display:none;border:0;background:transparent;padding:7px;cursor:pointer}
    .hamburger span{display:block;width:23px;height:2px;background:#25443d;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(11,31,29,.46);z-index:50}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(380px,88vw);height:100vh;background:#fff;z-index:60;transform:translateX(100%);transition:.28s;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:15px;padding:20px;border-bottom:1px solid var(--line);font-weight:700;color:#173b36}
    .drawer-head a{margin-left:auto;color:var(--blue);font-size:13px}
    .drawer-close{border:0;background:none;font-size:28px;color:#56706a;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 #edf1ef;background:none;text-align:left;color:#30443f;font-size:15px}
    .drawer-toggle{cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:#84948e}
    .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:#687974;font-size:13px}
    .footer{margin-top:70px;background:#173b36;color:#dbe9e2;padding:48px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px}
    .footer-brand{font-size:20px;font-weight:800;color:#fff;margin-bottom:12px}
    .footer p{color:#a9c0b7;font-size:13px;margin:8px 0}
    .footer h3{color:#fff;font-size:14px;margin:0 0 13px}
    .footer-grid a{display:block;color:#b9cec5;font-size:13px;margin:7px 0}
    .footer-grid a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;border-top:1px solid rgba(219,233,226,.18);margin-top:34px;padding-top:18px;color:#9eb7ad;font-size:12px}
    .video-page{padding:0 0 10px}
    .page-hero{padding:72px 0 48px;text-align:center;background:linear-gradient(180deg,#edf4f0 0,#f7f9f8 100%);border-bottom:1px solid #e3ece7}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:12px;font-weight:800;letter-spacing:2px}
    .eyebrow:before{content:"";width:28px;height:1px;background:var(--green)}
    .page-hero h1{margin:12px 0 10px;font-size:clamp(30px,5vw,54px);line-height:1.15;color:#173b36}
    .page-hero p{max-width:650px;margin:0 auto;color:var(--muted);font-size:15px}
    .video-toolbar{display:flex;align-items:center;justify-content:space-between;margin:34px 0 20px}
    .video-toolbar h2{font-size:22px;margin:0;color:#1d3d36}
    .category-note{font-size:13px;color:#71817a}
    .video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
    .video-card{background:#fff;border:1px solid var(--line);border-radius:13px;overflow:hidden;box-shadow:0 8px 25px rgba(27,65,53,.06);transition:.2s}
    .video-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .video-cover{position:relative;aspect-ratio:16/9;background:#dbe6e0;overflow:hidden}
    .video-cover img{width:100%;height:100%;object-fit:cover}
    .play-mark{position:absolute;left:16px;bottom:14px;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:rgba(11,61,145,.92);color:#fff;font-size:15px;padding-left:2px}
    .duration{position:absolute;right:12px;bottom:11px;padding:2px 7px;border-radius:4px;background:rgba(15,31,29,.78);color:#fff;font-size:11px}
    .video-body{padding:18px 18px 20px}
    .video-meta{display:flex;justify-content:space-between;gap:10px;color:#83918c;font-size:12px;margin-bottom:8px}
    .video-body h3{font-size:17px;line-height:1.4;margin:0 0 8px;color:#213b35}
    .video-body p{margin:0;color:#6d7c77;font-size:13px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
    .video-link{display:inline-block;margin-top:14px;color:var(--blue);font-size:13px;font-weight:700}
    .pagination{display:flex;justify-content:center;gap:7px;margin:42px 0 15px}
    .pagination a{min-width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--line);border-radius:5px;background:#fff;color:#5b7068;font-size:13px}
    .pagination a:hover,.pagination a.active{background:var(--blue);border-color:var(--blue);color:#fff}
    @media(max-width:1050px){
      .main-nav{display:none}.hamburger{display:block}.header-btns{margin-left:auto}.mega-menu{display:none}
      .video-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:650px){
      .container{width:min(100% - 28px,1180px)}
      .topbar{height:auto;padding:8px 0}.topbar .container{display:block}.topbar-right{gap:12px;margin-top:3px}
      .logo{min-width:0}.logo span{font-size:15px}.member-btn{display:none}.open-btn{font-size:12px;padding:7px 9px}
      .page-hero{padding:48px 0 35px}.page-hero h1{font-size:34px}.page-hero p{font-size:14px}
      .video-toolbar{display:block}.video-toolbar h2{margin-bottom:5px}.video-grid{grid-template-columns:1fr;gap:18px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-bottom{display:block}.footer-bottom span{display:block;margin:6px 0}
    }
    @media(max-width:430px){.footer-grid{grid-template-columns:1fr}.topbar-right{display:block}.topbar-right a{margin-right:12px}.header{height:68px}}