:root{--theme:#0B3D91;--ink:#10233f;--muted:#667085;--line:#e7edf5;--bg:#f5f8fc;--white:#fff}
    *{box-sizing:border-box}html,body{margin:0;padding:0;color:var(--ink);font-family:"Microsoft YaHei",Arial,sans-serif;background:var(--bg);line-height:1.6}a{color:inherit;text-decoration:none}.container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:#07162b;color:#c8d6e9;font-size:13px}.topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between}.topbar-contact{display:flex;gap:20px}.topbar a:hover{color:#fff}
    .header{height:76px;background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}.header-inner{height:76px;display:flex;align-items:center;gap:36px}.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--ink);white-space:nowrap}.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;list-style:none;margin:0;padding:0}.nav-item{position:relative}.nav-link{display:block;padding:26px 14px;font-size:15px;font-weight:600}.nav-link:hover{color:var(--theme)}.has-arrow:after{content:"⌄";font-size:12px;margin-left:6px}.dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);opacity:0;visibility:hidden;pointer-events:none;background:#fff;border:1px solid var(--line);box-shadow:0 18px 45px #14213d1a;border-radius:12px;padding:18px;transition:.2s;z-index:30}.dropdown-panel{width:270px}.dropdown-panel a{display:block;padding:8px 4px;font-size:14px}.dropdown-all,.mega-footer{display:block!important;color:var(--theme);font-weight:700;border-top:1px solid var(--line);margin-top:10px;padding-top:12px!important}.nav-item:hover>.dropdown-panel,.nav-item:focus-within>.dropdown-panel,.mega-host:hover>.mega-menu,.mega-host:focus-within>.mega-menu{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}.mega-menu{width:min(900px,calc(100vw - 30px))}.mega-title{font-weight:800;margin:0 0 12px;color:var(--theme)}.mega-grid{display:grid;gap:10px}.mega-grid-6{grid-template-columns:repeat(3,1fr)}.mega-grid-3{grid-template-columns:repeat(3,1fr)}.mega-card{display:flex;gap:9px;padding:10px;border:1px solid var(--line);border-radius:9px;background:#fbfdff}.mega-card img{width:42px;height:42px;object-fit:cover;border-radius:6px}.mega-card strong,.mega-card small{display:block}.mega-card strong{font-size:13px}.mega-card small{font-size:11px;color:var(--muted);line-height:1.45}.mega-split{display:grid;grid-template-columns:180px 1fr;gap:22px}.mega-categories{display:grid;gap:8px}.mega-categories a{font-size:13px;padding:5px 8px;background:#f3f6fb;border-radius:6px}.header-btns{display:flex;align-items:center;gap:12px}.header-account{font-size:13px;color:var(--theme)}.header-open{background:var(--theme);color:#fff;padding:9px 16px;border-radius:7px;font-size:14px}.hamburger{display:none;border:0;background:none;padding:8px;cursor:pointer}.hamburger span{display:block;width:24px;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;position:fixed;inset:0;background:#06132899;z-index:40}.drawer-overlay.open{display:block}.mobile-drawer{position:fixed;right:0;top:0;width:min(390px,88vw);height:100vh;background:#fff;z-index:50;transform:translateX(100%);transition:.25s;overflow:auto}.mobile-drawer.open{transform:translateX(0)}.drawer-head{height:68px;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)}.drawer-close{border:0;background:none;font-size:28px;cursor:pointer;color:var(--muted)}.drawer-menu{padding:12px 20px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 4px;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;font-size:15px;color:var(--ink);cursor:pointer}.drawer-toggle:after{content:"＋";float:right}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding:5px 12px;background:#f6f8fb}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
    .video-page{padding:54px 0 80px}.page-heading{text-align:center;margin-bottom:34px}.eyebrow{color:var(--theme);font-size:13px;font-weight:800;letter-spacing:2px}.page-heading h1{font-size:42px;line-height:1.2;margin:9px 0 12px}.page-heading p{max-width:680px;margin:auto;color:var(--muted)}.video-filter{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin:25px 0 34px}.video-filter a{padding:8px 17px;border:1px solid #cbd8ea;border-radius:30px;background:#fff;color:#52647d;font-size:14px}.video-filter a.active,.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:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 8px 24px #1d35570b;transition:.2s}.video-card:hover{transform:translateY(-4px);box-shadow:0 16px 32px #1d35571a}.video-cover{height:190px;position:relative;background:linear-gradient(135deg,#0b3d91,#16a5b9);overflow:hidden}.video-cover img{width:100%;height:100%;object-fit:cover}.video-cover:after{content:"▶";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:48px;height:48px;display:grid;place-items:center;border-radius:50%;background:#ffffffdd;color:var(--theme);font-size:20px;padding-left:3px}.duration{position:absolute;right:12px;bottom:10px;background:#08172dcc;color:#fff;border-radius:4px;padding:2px 7px;font-size:12px;z-index:1}.video-body{padding:18px}.video-body h2{font-size:18px;line-height:1.4;margin:0 0 9px}.video-body p{color:var(--muted);font-size:14px;margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.video-meta{display:flex;justify-content:space-between;color:#8794a8;font-size:12px}.pagination{display:flex;justify-content:center;gap:8px;margin-top:38px}.pagination a{min-width:36px;text-align:center;padding:7px 11px;background:#fff;border:1px solid var(--line);border-radius:6px;color:var(--muted)}.pagination a.active,.pagination a:hover{background:var(--theme);border-color:var(--theme);color:#fff}
    .footer{background:#07162b;color:#b8c6d9;padding:48px 0 20px}.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px}.footer .logo{color:#fff;margin-bottom:15px}.footer-brand p{font-size:13px;max-width:310px}.footer h3{color:#fff;font-size:15px;margin:4px 0 14px}.footer-links{display:grid;gap:7px;font-size:13px}.footer-links a:hover,.footer-search:hover{color:#fff}.footer-contact{display:grid;gap:8px;font-size:13px}.footer-search{display:inline-block;color:#77b7ff;font-size:13px;margin-top:8px}.footer-bottom{border-top:1px solid #ffffff1a;margin-top:35px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;font-size:12px}.risk-note{color:#8393aa;text-align:right}
    @media(max-width:1080px){.main-nav{display:none}.header-inner{justify-content:space-between}.header-btns{margin-left:auto}.hamburger{display:block}.video-grid{grid-template-columns:repeat(2,1fr)}.footer-main{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:620px){.container{width:min(100% - 28px,1180px)}.topbar-inner{height:auto;min-height:36px;padding:7px 0;align-items:flex-start;gap:8px}.topbar-contact{gap:8px;flex-direction:column;text-align:right}.header,.header-inner{height:66px}.header-open{display:none}.page-heading h1{font-size:32px}.video-page{padding-top:38px}.video-grid{grid-template-columns:1fr}.video-cover{height:205px}.footer-main{grid-template-columns:1fr;gap:25px}.footer-bottom{display:block}.risk-note{text-align:left;margin-top:10px}.mega-grid-6,.mega-grid-3{grid-template-columns:1fr}.mega-split{grid-template-columns:1fr}}