:root{--theme:#0B3D91;--ink:#14233d;--muted:#66748a;--line:#dce5f0;--pale:#f3f7fb;--white:#fff;--shadow:0 16px 40px rgba(15,46,89,.10)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:#f7faff;font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
button{font:inherit}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.topbar{height:36px;background:#edf3f9;border-bottom:1px solid #e2eaf3;color:#607087;font-size:13px}
.topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between}
.topbar a{color:var(--theme)}
.header{position:relative;z-index:20;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}
.header-inner{height:76px;display:flex;align-items:center;gap:30px}
.logo{display:flex;align-items:center;gap:10px;min-width:180px;font-size:19px;font-weight:800;color:var(--theme)}
.logo img{width:34px;height:34px;object-fit:contain}
.main-nav{flex:1;height:100%}
.nav-list{height:100%;display:flex;align-items:center;justify-content:center;gap:4px;margin:0;padding:0;list-style:none}
.nav-list>li{position:relative;height:100%;display:flex;align-items:center}
.nav-link{display:flex;align-items:center;height:100%;padding:0 13px;font-size:14px;color:#35445b;white-space:nowrap}
.nav-link:hover,.nav-link:focus{color:var(--theme)}
.has-arrow:after{content:"⌄";font-size:12px;margin-left:7px;color:#8190a3}
.dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%) translateY(8px);width:300px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s ease;z-index:30}
.mega-menu{width:520px}
.nav-list>li:hover .dropdown-panel,.nav-list>li:focus-within .dropdown-panel,.nav-list>li:hover .mega-menu,.nav-list>li:focus-within .mega-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown-panel:before,.mega-menu:before{content:"";position:absolute;top:-10px;left:0;right:0;height:10px}
.drop-title,.mega-title{margin:0 0 10px;color:var(--theme);font-size:15px;font-weight:800}
.drop-item{display:block;padding:8px 0;border-bottom:1px solid #edf1f6;font-size:13px}
.drop-item:hover,.mega-card:hover{color:var(--theme)}
.mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}
.mega-card{display:grid;grid-template-columns:32px 1fr;column-gap:8px;padding:10px;border:1px solid #e5ebf2;border-radius:10px;font-size:13px}
.mega-card img{grid-row:span 2;width:30px;height:30px;object-fit:contain}
.mega-card strong{font-size:13px;line-height:1.4}
.mega-card small{grid-column:2;display:block;color:var(--muted);font-size:11px;line-height:1.5}
.mega-footer{display:inline-block;margin-top:13px;color:var(--theme);font-size:12px;margin-right:12px}
.header-btns{display:flex;align-items:center;gap:12px;white-space:nowrap;font-size:13px}
.open-account{padding:7px 15px;border-radius:6px;background:var(--theme);color:#fff}
.hamburger{display:none;width:40px;height:38px;padding:8px;border:1px solid var(--line);border-radius:7px;background:#fff;cursor:pointer}
.hamburger span{display:block;width:22px;height:2px;margin:4px auto;background:var(--theme);transition:.2s}
.hamburger.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.drawer-overlay{position:fixed;inset:0;background:rgba(10,27,52,.42);opacity:0;visibility:hidden;transition:.25s;z-index:50}
.drawer-overlay.open{opacity:1;visibility:visible}
.mobile-drawer{position:fixed;top:0;right:0;width:min(390px,88vw);height:100vh;background:#fff;transform:translateX(100%);transition:.28s ease;z-index:51;overflow:auto;box-shadow:-15px 0 35px rgba(0,0,0,.15)}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;gap:14px;padding:18px 20px;border-bottom:1px solid var(--line);color:var(--theme);font-weight:700}
.drawer-head>a{margin-left:auto;padding:5px 12px;border-radius:5px;background:var(--theme);color:#fff;font-size:13px}
.drawer-close{border:0;background:none;font-size:28px;line-height:1;color:#738198;cursor:pointer}
.drawer-menu{padding:10px 20px 30px}
.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf1f5;background:none;text-align:left;color:var(--ink);font-size:15px;cursor:pointer}
.drawer-toggle:after{content:"＋";float:right;color:#8a98ab}
.drawer-toggle.active:after{content:"－"}
.drawer-submenu{max-height:0;overflow:hidden;padding-left:15px;transition:max-height .25s ease}
.drawer-submenu.open{max-height:600px}
.drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:13px}
.footer{margin-top:72px;background:#10294e;color:#dce8f8}
.footer .container{padding-top:46px}
.footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:35px}
.footer h3,.footer h4{margin:0 0 15px;color:#fff}
.footer h3{font-size:20px}
.footer h4{font-size:14px}
.footer p{margin:6px 0;color:#b9c9de;font-size:13px}
.footer-grid a{display:block;margin:7px 0;color:#b9c9de;font-size:13px}
.footer-grid a:hover{color:#fff}
.footer-bottom{margin-top:35px;padding:18px 0;border-top:1px solid rgba(255,255,255,.15);color:#9eb2cc;font-size:12px}
.article-page{padding:54px 0 0}
.article-layout{display:grid;grid-template-columns:minmax(0,820px) 280px;gap:38px;align-items:start}
.article-main{background:#fff;border:1px solid var(--line);border-radius:18px;padding:38px 44px;box-shadow:0 12px 32px rgba(20,54,95,.06);min-width:0}
.article-kicker{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:15px}
.article-kicker span{padding:4px 10px;border-radius:20px;background:#eaf1fa;color:var(--theme);font-size:12px}
.article-main h1{margin:0 0 18px;font-size:clamp(28px,4vw,44px);line-height:1.25;letter-spacing:-.02em;color:#13294b}
.article-meta{display:flex;flex-wrap:wrap;gap:18px;padding:14px 0;border-top:1px solid #edf1f6;border-bottom:1px solid #edf1f6;color:var(--muted);font-size:13px}
.article-cover{width:100%;max-height:430px;object-fit:cover;border-radius:12px;margin:25px 0 28px;background:#edf3f9}
.article-content{min-width:0;max-width:100%;overflow-x:auto;color:#33445b;font-size:16px}
.article-content img,.article-content video{max-width:100%;height:auto}
.article-content table{max-width:100%;display:block;overflow-x:auto;border-collapse:collapse}
.article-content h2,.article-content h3{color:#163b73;line-height:1.4;margin-top:30px}
.article-content p{margin:1em 0}
.article-content blockquote{margin:24px 0;padding:15px 20px;border-left:4px solid var(--theme);background:#f2f6fb;color:#53647c}
.article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px;padding-top:20px;border-top:1px solid var(--line)}
.article-tags a{padding:5px 11px;border:1px solid #d9e3ef;border-radius:20px;color:var(--theme);font-size:12px}
.article-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:30px}
.article-nav a{padding:15px;border:1px solid var(--line);border-radius:10px;background:#fbfdff;font-size:13px}
.article-nav a:last-child{text-align:right}
.article-side{position:sticky;top:22px}
.side-card{margin-bottom:18px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:15px}
.side-card h2{margin:0 0 14px;font-size:17px;color:#173b70}
.side-card p{margin:0;color:var(--muted);font-size:13px}
.like-list a{display:block;padding:11px 0;border-bottom:1px solid #edf1f6;font-size:13px;color:#40536e}
.like-list a:last-child{border-bottom:0}
.like-list a:hover{color:var(--theme)}
@media(max-width:960px){
.main-nav{display:none}
.hamburger{display:block}
.header-inner{justify-content:space-between}
.header-btns{margin-left:auto}
.article-layout{grid-template-columns:1fr}
.article-side{position:static}
}
@media(max-width:640px){
.container{width:min(100% - 28px,1180px)}
.topbar{height:auto;padding:7px 0}
.topbar .container{display:block;font-size:11px}
.topbar .contact{display:block;margin-top:2px}
.logo{min-width:0;font-size:16px}
.header-inner{height:64px;gap:10px}
.header-btns>span{display:none}
.open-account{padding:6px 10px;font-size:12px}
.article-page{padding-top:25px}
.article-main{padding:24px 20px;border-radius:13px}
.article-main h1{font-size:29px}
.article-content{font-size:15px}
.article-nav{grid-template-columns:1fr}
.article-nav a:last-child{text-align:left}
.footer-grid{grid-template-columns:1fr 1fr;gap:24px}
.footer-grid>div:first-child{grid-column:1/-1}
.mega-menu{left:auto;right:-80px;transform:translateY(8px)}
}