:root{--blue:#0B3D91;--ink:#13233d;--muted:#64748b;--line:#dbe4ef;--bg:#f5f8fc;--orange:#f58220;--white:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--bg);font:15px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1180px,calc(100% - 40px));margin:auto}.skip-link{position:absolute;left:-9999px;top:8px;background:#fff;padding:8px 14px;z-index:100}.skip-link:focus{left:10px}.topbar{background:#092d6c;color:#d9e7ff;font-size:13px}.topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between}.topbar a{color:#fff;margin-left:20px}.header{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}.header-inner{height:78px;display:flex;align-items:center;gap:30px}.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--blue);white-space:nowrap}.logo img{width:38px;height:38px;object-fit:contain}.main-nav{margin-left:auto}.nav-list{display:flex;gap:4px;list-style:none;margin:0;padding:0}.nav-item{position:relative}.nav-link{display:block;padding:27px 13px;font-weight:600;color:#263957}.nav-link:hover,.nav-link:focus{color:var(--blue)}.has-arrow:after{content:"⌄";font-size:12px;margin-left:6px}.dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%);background:#fff;border:1px solid var(--line);box-shadow:0 18px 45px #102b501c;border-radius:0 0 14px 14px;opacity:0;visibility:hidden;transition:.2s;z-index:30}.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}.dropdown-panel{width:310px;padding:18px}.dropdown-title,.mega-heading strong{display:block;color:var(--blue);font-size:16px}.dropdown-article{display:block;padding:9px 0;border-bottom:1px solid #edf1f6}.dropdown-more,.mega-footer{display:block;color:var(--orange);font-weight:700;padding-top:12px}.mega-menu{width:720px;padding:22px}.mega-heading{display:flex;justify-content:space-between;gap:20px;margin-bottom:15px}.mega-heading span{color:var(--muted);font-size:13px}.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.mega-card{display:flex;gap:9px;padding:10px;border:1px solid #e7edf5;border-radius:10px;background:#fbfdff;min-width:0}.mega-card img{width:42px;height:42px;object-fit:cover;border-radius:7px;background:#e9f0fa}.mega-card-content{min-width:0}.mega-card strong{display:block;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mega-card p{font-size:12px;color:var(--muted);margin:2px 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mega-card-meta{display:flex;flex-wrap:wrap;gap:7px;color:var(--muted);font-size:11px}.mega-categories{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:15px}.mega-categories a{padding:4px 10px;border-radius:20px;background:#eef4fc;color:var(--blue);font-size:12px}.header-btns{display:flex;align-items:center;gap:13px;white-space:nowrap}.header-btns>a{padding:8px 15px;border-radius:7px;background:var(--orange);color:#fff;font-weight:700}.hamburger{display:none;border:0;background:none;padding:7px;cursor:pointer}.hamburger span{display:block;width:24px;height:2px;background:var(--blue);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{position:fixed;inset:0;background:#061a35a8;opacity:0;visibility:hidden;z-index:45;transition:.2s}.drawer-overlay.open{opacity:1;visibility:visible}.mobile-drawer{position:fixed;right:-360px;top:0;width:min(350px,88vw);height:100vh;background:#fff;z-index:50;overflow:auto;transition:.25s;padding-bottom:30px}.mobile-drawer.open{right:0}.drawer-head{display:flex;align-items:center;gap:14px;padding:18px;border-bottom:1px solid var(--line);font-weight:700;color:var(--blue)}.drawer-head>a{margin-left:auto;background:var(--orange);color:#fff;padding:5px 10px;border-radius:5px}.drawer-close{border:0;background:none;font-size:29px;color:var(--muted);cursor:pointer}.drawer-menu{padding:8px 18px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 4px;border:0;border-bottom:1px solid #edf1f6;background:none;text-align:left;font:inherit;color:var(--ink);cursor:pointer}.drawer-toggle:after{content:"＋";float:right;color:var(--blue)}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding-left:15px}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:8px 4px;color:var(--muted);font-size:14px}.footer{background:#0b2348;color:#d7e3f7;margin-top:70px}.footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:42px;padding:48px 0 38px}.footer .logo{color:#fff}.footer-brand p{color:#aebfd8;max-width:330px;font-size:13px}.footer h3{margin:0 0 14px;color:#fff;font-size:16px}.footer-links,.footer-contact{display:grid;gap:8px;color:#b7c8df;font-size:13px}.footer a:hover{color:#fff}.footer-bottom{border-top:1px solid #294263;padding:16px 0;display:flex;justify-content:space-between;gap:20px;color:#aebfd8;font-size:12px}.footer-bottom-links{display:flex;gap:18px}.drawer-locked{overflow:hidden}
.video-page{padding:56px 0 0}.video-page .page-heading{text-align:center;max-width:740px;margin:0 auto 34px}.eyebrow{display:inline-block;color:var(--orange);font-weight:800;letter-spacing:.12em;font-size:12px}.video-page h1{font-size:clamp(30px,4vw,48px);line-height:1.2;margin:10px 0;color:var(--blue)}.video-page .intro{color:var(--muted);margin:0}.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 #cbd9e9;border-radius:999px;background:#fff;color:var(--blue);font-weight:600}.video-filter a:hover,.video-filter .current{background:var(--blue);color:#fff;border-color:var(--blue)}.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.video-card{background:#fff;border:1px solid #e2eaf3;border-radius:15px;overflow:hidden;box-shadow:0 8px 25px #18375b0b;transition:.2s}.video-card:hover{transform:translateY(-4px);box-shadow:0 13px 32px #18375b18}.video-cover{position:relative;aspect-ratio:16/9;background:#dce8f6;overflow:hidden}.video-cover img{width:100%;height:100%;object-fit:cover}.play-mark{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:48px;height:48px;border-radius:50%;display:grid;place-items:center;background:#ffffffdf;color:var(--blue);font-size:21px;padding-left:3px}.video-duration{position:absolute;right:10px;bottom:9px;padding:2px 7px;border-radius:4px;background:#071c3ccc;color:#fff;font-size:12px}.video-body{padding:18px}.video-body h2{font-size:18px;line-height:1.4;margin:0 0 8px;color:var(--ink)}.video-body p{color:var(--muted);font-size:14px;margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.video-meta{display:flex;justify-content:space-between;color:#8292a7;font-size:12px}.pagination{display:flex;justify-content:center;gap:8px;margin:38px 0}.pagination a{min-width:36px;text-align:center;padding:6px 10px;border:1px solid #cad7e6;border-radius:6px;background:#fff;color:var(--blue)}.pagination a.active,.pagination a:hover{background:var(--blue);color:#fff}.video-note{margin-top:35px;border-left:4px solid var(--orange);background:#fff;padding:17px 20px;color:var(--muted);border-radius:0 10px 10px 0}
@media(max-width:980px){.main-nav{display:none}.header-btns{margin-left:auto}.hamburger{display:block}.mega-menu{width:650px}.footer-main{grid-template-columns:repeat(2,1fr)}.video-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.container{width:min(100% - 28px,1180px)}.topbar-inner{padding:7px 0;display:block}.topbar-contact{margin-top:3px}.topbar a{margin:0 15px 0 0}.header-inner{height:66px}.logo{font-size:17px}.logo img{width:32px;height:32px}.header-btns>a{font-size:13px;padding:6px 9px}.video-page{padding-top:38px}.video-grid{grid-template-columns:1fr}.video-page h1{font-size:32px}.footer-main{grid-template-columns:1fr;gap:25px;padding:35px 0}.footer-bottom{display:block}.footer-bottom-links{display:block;margin-top:8px}.footer-bottom-links span{display:block}.mega-menu,.dropdown-panel{display:none}}