:root{--theme:#0B3D91;--ink:#14213d;--muted:#667085;--line:#e7ebf2;--bg:#f5f7fb;--card:#fff;--shadow:0 18px 50px rgba(20,33,61,.09)}
    *{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}a{color:inherit;text-decoration:none}button{font:inherit}.container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:#101b31;color:#cbd5e1;font-size:13px}.topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between}.topbar-links{display:flex;gap:24px}.topbar a:hover{color:#fff}
    .header{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}.header-inner{height:76px;display:flex;align-items:center;gap:34px}.logo{display:flex;align-items:center;gap:10px;min-width:210px;font-size:19px;font-weight:800;color:var(--ink)}.logo img{width:36px;height:36px;object-fit:contain}.main-nav{flex:1}.nav-list{list-style:none;display:flex;align-items:center;gap:4px;padding:0;margin:0}.nav-item{position:relative}.nav-link{display:block;padding:27px 14px;font-size:15px;white-space:nowrap}.nav-link:hover,.nav-link:focus{color:var(--theme)}.has-arrow:after{content:"⌄";font-size:12px;margin-left:6px;color:#98a2b3}.dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:0;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);padding:22px;opacity:0;visibility:hidden;transform:translateY(8px);transition:.2s;z-index:30}.dropdown-panel{width:280px}.mega-menu{width:760px;left:50%;transform:translate(-35%,8px)}.nav-item:hover .dropdown-panel,.nav-item:focus-within .dropdown-panel{opacity:1;visibility:visible;transform:translateY(0)}.nav-item:hover .mega-menu,.nav-item:focus-within .mega-menu{opacity:1;visibility:visible;transform:translate(-35%,0)}.mega-menu:before,.dropdown-panel:before{content:"";position:absolute;top:-12px;left:0;right:0;height:12px}.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.mega-title,.dropdown-title{font-size:13px;color:var(--theme);font-weight:800;margin:0 0 12px}.dropdown-list,.mega-links{display:grid;gap:9px}.dropdown-list a,.mega-links a{font-size:13px;color:#475467}.dropdown-list a:hover,.mega-links a:hover{color:var(--theme)}.mega-cards{display:grid;grid-template-columns:1fr 1fr;gap:9px}.mega-card{display:flex;gap:8px;padding:9px;border:1px solid var(--line);border-radius:9px;background:#fbfcfe;min-width:0}.mega-card img{width:31px;height:31px;object-fit:cover;border-radius:6px;flex:none}.mega-card span{display:grid;min-width:0}.mega-card strong,.mega-card span span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:11px}.mega-card strong{font-size:12px}.mega-card span span{color:#7b8798}.mega-footer{display:inline-block;margin-top:16px;padding-top:13px;border-top:1px solid var(--line);width:100%;font-size:13px;color:var(--theme);font-weight:700}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}.member-link{font-size:13px;color:var(--theme)}.account-link{background:var(--theme);color:#fff;border-radius:7px;padding:9px 15px;font-size:13px;font-weight:700}.hamburger{display:none;border:0;background:transparent;padding:8px;cursor:pointer}.hamburger span{display:block;width:23px;height:2px;background:var(--ink);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}.mobile-drawer{display:none}
    .video-page{padding:58px 0 86px}.page-heading{text-align:center;max-width:720px;margin:0 auto 38px}.eyebrow{font-size:12px;color:var(--theme);font-weight:800;letter-spacing:2px}.page-heading h1{font-size:42px;line-height:1.2;margin:10px 0 14px}.page-heading p{color:var(--muted);margin:0}.video-filter{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin:0 auto 34px}.video-filter a{background:#fff;border:1px solid var(--line);padding:8px 17px;border-radius:99px;color:#536174;font-size:13px}.video-filter a:first-child,.video-filter a:hover{background:var(--theme);border-color:var(--theme);color:#fff}.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.video-card{background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 8px 26px rgba(20,33,61,.04);transition:.2s}.video-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.video-cover{height:188px;position:relative;background:linear-gradient(135deg,#182b55,#0B3D91);overflow:hidden}.video-cover img{width:100%;height:100%;object-fit:cover}.video-cover:after{content:"";position:absolute;inset:0;background:linear-gradient(transparent,rgba(0,0,0,.4))}.play{position:absolute;z-index:1;left:50%;top:50%;transform:translate(-50%,-50%);width:48px;height:48px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.92);color:var(--theme);font-size:20px;padding-left:3px}.duration{position:absolute;z-index:2;right:12px;bottom:10px;background:rgba(0,0,0,.68);color:#fff;padding:2px 7px;border-radius:4px;font-size:11px}.video-body{padding:18px}.video-body h2{font-size:18px;line-height:1.4;margin:0 0 9px}.video-body p{font-size:13px;color:var(--muted);margin:0 0 15px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.video-meta{display:flex;justify-content:space-between;gap:8px;color:#8a94a4;font-size:12px}.video-cta{margin-top:15px;display:inline-block;color:var(--theme);font-size:13px;font-weight:700}.pagination{display:flex;justify-content:center;gap:8px;margin-top:42px}.pagination a{min-width:36px;height:36px;padding:5px 10px;text-align:center;border:1px solid var(--line);border-radius:7px;background:#fff;color:#667085;font-size:13px}.pagination a.current,.pagination a:hover{background:var(--theme);color:#fff;border-color:var(--theme)}
    .footer{background:#101b31;color:#c5cedb;padding:52px 0 22px}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:35px}.footer-brand strong{font-size:20px;color:#fff}.footer-brand p{font-size:13px;max-width:280px;color:#9eabc0}.footer h3{font-size:14px;color:#fff;margin:0 0 13px}.footer-links{display:grid;gap:7px;font-size:13px;color:#aab6c8}.footer-links a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;font-size:12px;color:#8795aa}
    @media(max-width:980px){.main-nav{display:none}.header-inner{height:68px}.header-btns{margin-left:auto}.hamburger{display:block}.video-grid{grid-template-columns:repeat(2,1fr)}.mega-menu{width:calc(100vw - 40px)}}
    @media(max-width:640px){.container{width:min(100% - 28px,1180px)}.topbar-inner{height:auto;min-height:36px;padding:7px 0;align-items:flex-start;gap:8px}.topbar-links{gap:8px;flex-direction:column;text-align:right}.member-link{display:none}.account-link{padding:8px 11px}.video-page{padding:40px 0 60px}.page-heading h1{font-size:32px}.video-grid{grid-template-columns:1fr}.video-cover{height:205px}.footer-grid{grid-template-columns:1fr 1fr;gap:26px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}
      .drawer-overlay{display:block;position:fixed;inset:0;background:rgba(9,18,35,.5);opacity:0;visibility:hidden;transition:.25s;z-index:40}.drawer-overlay.open{opacity:1;visibility:visible}.mobile-drawer{display:block;position:fixed;z-index:50;right:0;top:0;bottom:0;width:min(360px,88vw);background:#fff;transform:translateX(100%);transition:.25s;overflow:auto}.mobile-drawer.open{transform:translateX(0)}.drawer-head{height:68px;padding:0 18px;display:flex;align-items:center;gap:14px;border-bottom:1px solid var(--line);font-weight:700}.drawer-head span{flex:1}.drawer-head a{color:var(--theme);font-size:13px}.drawer-close{border:0;background:transparent;font-size:28px;color:#667085;cursor:pointer}.drawer-menu{padding:12px 18px 30px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid var(--line);background:transparent;text-align:left;font-size:15px;color:var(--ink);cursor:pointer}.drawer-toggle:after{content:"＋";float:right;color:#98a2b3}.drawer-toggle.active{color:var(--theme)}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding:5px 0 8px 14px;border-bottom:1px solid var(--line)}.drawer-submenu.open{display:grid}.drawer-submenu a{padding:8px 0;color:#667085;font-size:13px}
    }