:root{--blue:#0B3D91;--ink:#12213b;--muted:#68758b;--line:#e5eaf2;--soft:#f5f8fc;--white:#fff;--accent:#d89b32}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:"Microsoft YaHei","Noto Sans SC",Arial,sans-serif;background:#f5f7fb;line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1180px,calc(100% - 40px));margin:auto}.topbar{background:#0b1830;color:#cbd6e7;font-size:13px}.topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between}.topbar-contact{display:flex;gap:22px}.header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 3px 14px #1329520b}.header-inner{min-height:78px;display:flex;align-items:center;gap:32px}.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;white-space:nowrap;color:var(--ink)}.logo img{width:36px;height:36px;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 15px;font-size:15px;font-weight:600}.nav-link:hover,.nav-link:focus{color:var(--blue)}.has-arrow:after{content:"⌄";font-size:12px;margin-left:6px;color:#8490a1}.dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%) translateY(8px);width:320px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:0 18px 40px #16284d18;opacity:0;visibility:hidden;transition:.2s;z-index:30}.mega-menu{width:min(850px,90vw)}.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)}.mega-menu:before,.dropdown-panel:before{content:"";position:absolute;top:-10px;left:0;right:0;height:10px}.dropdown-title,.mega-heading{margin:0 0 12px;color:var(--blue);font-weight:800}.dropdown-list{display:grid;gap:8px}.dropdown-article{font-size:14px;padding:8px 0;border-bottom:1px solid var(--line)}.dropdown-footer,.mega-footer{display:block;margin-top:15px;padding-top:13px;border-top:1px solid var(--line);color:var(--blue);font-size:13px;font-weight:700}.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.mega-card{min-width:0;padding:12px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe}.mega-card:hover{border-color:#9db4d8;transform:translateY(-2px)}.mega-broker-head,.mega-tool-head{display:flex;align-items:center;gap:8px}.mega-card img{width:28px;height:28px;object-fit:contain;border-radius:6px}.mega-name{display:block;font-weight:700;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mega-stats{display:grid;grid-template-columns:1fr 1fr;gap:4px;margin-top:9px;font-size:11px;color:var(--muted)}.mega-stats strong{display:block;color:var(--ink);font-size:12px}.mega-summary{font-size:12px;color:var(--muted);margin:7px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.mega-layout{display:grid;grid-template-columns:170px 1fr;gap:22px}.mega-categories{display:grid;gap:6px}.mega-categories a{padding:6px 8px;background:var(--soft);border-radius:6px;font-size:13px}.video-card img,.product-mega-card img{width:100%;height:58px;object-fit:cover;margin-bottom:8px}.video-meta,.product-meta{display:flex;justify-content:space-between;color:#8490a1;font-size:11px;margin-top:8px}.header-btns{display:flex;align-items:center;gap:12px}.account-open{padding:9px 16px;border-radius:7px;background:var(--blue);color:#fff;font-size:13px;font-weight:700}.hamburger{display:none;border:0;background:none;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{position:fixed;inset:0;background:#08142688;opacity:0;visibility:hidden;z-index:70;transition:.25s}.drawer-overlay.open{opacity:1;visibility:visible}.mobile-drawer{position:fixed;top:0;right:0;width:min(390px,88vw);height:100vh;background:#fff;z-index:80;transform:translateX(100%);transition:.3s;overflow:auto}.mobile-drawer.open{transform:translateX(0)}.drawer-head{height:70px;padding:0 22px;display:flex;align-items:center;gap:15px;border-bottom:1px solid var(--line);font-weight:700}.drawer-head>a{margin-left:auto;color:var(--blue)}.drawer-close{border:0;background:none;font-size:28px;color:var(--muted);cursor:pointer}.drawer-menu{padding:12px 22px 40px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;font-size:15px;color:var(--ink);font-weight:600}.drawer-toggle:after{content:"＋";float:right;color:var(--blue)}.drawer-toggle.active:after{content:"－"}.drawer-submenu{max-height:0;overflow:hidden;padding-left:14px;transition:.25s}.drawer-submenu.open{max-height:600px;padding-top:5px;padding-bottom:8px}.drawer-submenu a{display:block;padding:7px 0;color:var(--muted);font-size:14px}.footer{margin-top:70px;background:#0b1830;color:#c9d4e5}.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:45px;padding:52px 0 42px}.footer .logo{color:#fff}.footer-brand p{max-width:350px;color:#aab8cc;font-size:13px}.footer-social a{color:#fff;font-size:13px}.footer-title{margin:4px 0 16px;color:#fff;font-size:15px}.footer-links{display:grid;gap:9px;color:#aab8cc;font-size:13px}.footer-links a:hover,.footer-contact a:hover{color:#fff}.footer-contact{display:grid;gap:5px;color:#aab8cc;font-size:13px}.footer-contact span{margin-top:5px;color:#71839e}.footer-bottom{border-top:1px solid #ffffff18;padding:18px 0;display:flex;justify-content:space-between;color:#8495ad;font-size:12px}.footer-bottom-links{display:flex;gap:20px}.video-page{padding:50px 0 20px}.page-intro{text-align:center;max-width:720px;margin:0 auto 35px}.eyebrow{color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.14em}.page-intro h1{margin:8px 0 12px;font-size:clamp(30px,5vw,48px);line-height:1.2}.page-intro p{margin:0;color:var(--muted)}.video-filter{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin-bottom:32px}.video-filter a{padding:8px 17px;border:1px solid #d6dfec;border-radius:30px;background:#fff;color:#52627a;font-size:13px}.video-filter a:hover,.video-filter a.active{background:var(--blue);border-color:var(--blue);color:#fff}.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.video-item{overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:15px;box-shadow:0 8px 22px #18355f0b;transition:.25s}.video-item:hover{transform:translateY(-5px);box-shadow:0 14px 30px #18355f18}.video-cover{position:relative;height:190px;background:#dfe8f5;overflow:hidden}.video-cover img{width:100%;height:100%;object-fit:cover}.video-duration{position:absolute;right:12px;bottom:10px;padding:3px 7px;border-radius:4px;background:#071426d9;color:#fff;font-size:12px}.video-body{padding:18px}.video-body h2{font-size:18px;line-height:1.4;margin:0 0 9px}.video-body p{height:48px;overflow:hidden;color:var(--muted);font-size:13px;margin:0 0 15px}.video-meta-line{display:flex;justify-content:space-between;color:#8a96a7;font-size:12px;border-top:1px solid var(--line);padding-top:12px}.pagination{display:flex;justify-content:center;gap:8px;margin:40px 0 0}.pagination a{min-width:36px;padding:7px 11px;text-align:center;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--muted);font-size:13px}.pagination a.active,.pagination a:hover{background:var(--blue);color:#fff;border-color:var(--blue)}@media(max-width:980px){.main-nav{display:none}.hamburger{display:block}.header-inner{justify-content:space-between}.footer-main{grid-template-columns:repeat(2,1fr)}.video-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.container{width:min(100% - 28px,1180px)}.topbar-inner{padding:7px 0;align-items:flex-start;gap:8px}.topbar-contact{gap:8px;flex-direction:column;text-align:right}.account-open{display:none}.mega-layout{grid-template-columns:1fr}.mega-grid{grid-template-columns:1fr 1fr}.video-grid{grid-template-columns:1fr}.video-cover{height:210px}.footer-main{grid-template-columns:1fr;gap:25px;padding:38px 0 28px}.footer-bottom{display:block}.footer-bottom-links{margin-top:8px}.page-intro h1{font-size:32px}.video-page{padding-top:34px}}