:root{--blue:#0B3D91;--ink:#08130f;--panel:#102019;--green:#8ee6a8;--muted:#91a79a;--line:#244333;--amber:#e9b949;--white:#f4f8f2}
    *{box-sizing:border-box}html,body{margin:0;padding:0;background:#f4f7f3;color:#17231c;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif}a{text-decoration:none;color:inherit}.container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:var(--ink);color:#b9c9bd;font-size:13px;border-bottom:1px solid #1e3528}.topbar .container{height:38px;display:flex;align-items:center;justify-content:space-between}.topbar strong{color:var(--green)}.topbar-links{display:flex;gap:22px}.topbar a{color:#b9c9bd}
    .header{height:78px;background:#fff;border-bottom:1px solid #e4ebe5;position:relative;z-index:20}.header-inner{height:100%;display:flex;align-items:center;gap:42px}.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--blue);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:29px 15px;color:#26352c;font-size:15px;white-space:nowrap}.nav-link:hover,.nav-link:focus{color:var(--blue)}.has-arrow:after{content:"⌄";font-size:12px;margin-left:6px;color:#708078}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translate(-50%,-8px);opacity:0;visibility:hidden;pointer-events:none;background:#102019;color:var(--white);border:1px solid #294b36;border-radius:0 0 12px 12px;box-shadow:0 18px 35px #07110b55;padding:20px;transition:.2s;min-width:250px}.mega-menu{width:620px}.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;pointer-events:auto;transform:translate(-50%,0)}.mega-title{color:var(--green);font-size:13px;margin:0 0 13px;letter-spacing:.08em}.dropdown-panel>a{display:block;padding:9px 0;border-bottom:1px solid var(--line);font-size:13px}.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.mega-card{display:flex;gap:8px;padding:9px;border:1px solid #294b36;border-radius:8px;min-height:55px;background:#13271c}.mega-card:hover{border-color:var(--green);background:#193622}.mega-card img{width:30px;height:30px;object-fit:contain;border-radius:5px}.mega-card span{min-width:0}.mega-card b,.mega-card small{display:block}.mega-card b{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mega-card small{font-size:10px;color:#9cb2a1;line-height:1.5;margin-top:3px}.mega-footer{display:block;margin-top:15px;padding-top:12px;border-top:1px solid var(--line);color:var(--green);font-size:13px}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}.member-link{font-size:13px;color:var(--blue)}.account-btn{padding:10px 15px;border-radius:6px;background:var(--blue);color:#fff;font-size:13px}.hamburger{display:none;border:0;background:transparent;padding:8px;cursor:pointer}.hamburger span{display:block;width:23px;height:2px;background:#18271d;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 80px;background:linear-gradient(180deg,#f4f7f3,#fff)}.page-heading{text-align:center;max-width:720px;margin:0 auto 40px}.eyebrow{color:var(--blue);font-size:12px;font-weight:700;letter-spacing:.18em}.page-heading h1{font-size:42px;line-height:1.2;margin:12px 0;color:#112017}.page-heading p{color:#66766b;line-height:1.8;margin:0}.category-strip{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin:27px auto 0}.category-strip a{padding:9px 18px;border:1px solid #d4dfd5;border-radius:30px;color:#516359;background:#fff;font-size:13px}.category-strip a:first-child,.category-strip a:hover{background:var(--blue);border-color:var(--blue);color:#fff}
    .video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.video-card{background:#fff;border:1px solid #e1e9e2;border-radius:14px;overflow:hidden;box-shadow:0 8px 22px #1835220b;transition:.25s}.video-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px #18352218}.video-cover{display:block;position:relative;aspect-ratio:16/9;background:#15251b;overflow:hidden}.video-cover img{width:100%;height:100%;object-fit:cover;transition:.3s}.video-card:hover .video-cover img{transform:scale(1.04)}.play-mark{position:absolute;left:18px;bottom:16px;width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:#ffffffdd;color:var(--blue);font-size:18px}.duration{position:absolute;right:12px;bottom:12px;padding:4px 7px;background:#07120ccc;color:#d8f0dc;border-radius:4px;font-size:11px}.video-body{padding:19px 20px 20px}.video-body h2{font-size:18px;line-height:1.45;margin:0 0 10px;color:#18261d}.video-body p{font-size:13px;color:#718078;line-height:1.7;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;align-items:center;color:#8a998e;font-size:12px}.video-meta a{color:var(--blue);font-weight:700}.pagination{display:flex;justify-content:center;gap:8px;margin-top:42px}.pagination a{min-width:36px;height:36px;padding:0 12px;display:grid;place-items:center;border:1px solid #d5e0d7;border-radius:5px;color:#526359;font-size:13px;background:#fff}.pagination a.current,.pagination a:hover{background:var(--blue);border-color:var(--blue);color:#fff}
    .footer{background:var(--ink);color:#a8b9ac;padding:48px 0 20px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px}.footer h3{color:#e8f4e9;margin:0 0 13px}.footer h4{color:var(--green);font-size:14px;margin:0 0 15px}.footer p{font-size:13px;line-height:1.8;margin:7px 0}.footer a{display:block;color:#a8b9ac;font-size:13px;margin:9px 0}.footer a:hover{color:var(--green)}.footer-brand>a{display:inline-block;margin-right:15px}.footer-bottom{display:flex;justify-content:space-between;border-top:1px solid #20382a;margin-top:35px;padding-top:18px;font-size:12px;color:#71887a}
    @media(max-width:900px){.main-nav{display:none}.header-inner{justify-content:space-between;gap:10px}.hamburger{display:block}.member-link{display:none}.mega-menu{width:min(620px,calc(100vw - 30px))}.video-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:620px){.container{width:min(100% - 28px,1180px)}.topbar .container{height:auto;padding:9px 0;display:block}.topbar-links{gap:15px;margin-top:5px}.header{height:68px}.nav-link{padding:23px 10px}.page-heading{margin-bottom:30px}.page-heading h1{font-size:32px}.video-grid{grid-template-columns:1fr;gap:18px}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block;line-height:2}.footer-bottom span{display:block}.mobile-drawer{display:block;position:fixed;z-index:40;right:-340px;top:0;width:min(340px,88vw);height:100vh;background:#102019;color:#dcecdf;transition:right .25s;overflow:auto}.mobile-drawer.open{right:0}.drawer-overlay{position:fixed;z-index:35;inset:0;background:#0008;opacity:0;visibility:hidden;display:block;transition:.25s}.drawer-overlay.open{opacity:1;visibility:visible}.drawer-head{height:72px;padding:0 18px;display:flex;align-items:center;gap:18px;border-bottom:1px solid #294b36}.drawer-head span{font-weight:700;flex:1}.drawer-head a{color:var(--green);font-size:13px}.drawer-close{border:0;background:none;color:#fff;font-size:30px;cursor:pointer}.drawer-menu{padding:12px 18px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:15px 0;border:0;border-bottom:1px solid #294b36;background:transparent;color:#e1eee2;text-align:left;font-size:15px}.drawer-toggle{cursor:pointer}.drawer-toggle:after{content:"＋";float:right;color:var(--green)}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding:5px 12px;border-bottom:1px solid #294b36}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:10px 0;color:#a8c0ad;font-size:13px}.mega-grid{grid-template-columns:1fr}.mega-menu{max-height:70vh;overflow:auto}}