:root{--theme:#0B3D91;--ink:#172033;--muted:#687386;--line:#e5eaf2;--paper:#f6f8fb;--white:#fff;--accent:#f0b429;--radius:16px;--shadow:0 14px 40px rgba(21,43,79,.09)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","微软雅黑",Arial,sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.topbar{height:38px;background:#092d69;color:#dbe8ff;font-size:13px}
.topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between}
.top-contact{display:flex;gap:20px}.top-contact a{color:#fff;opacity:.9}
.header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
.header-inner{min-height:78px;display:flex;align-items:center;gap:28px}
.logo{display:flex;align-items:center;gap:10px;min-width:188px;font-weight:800;font-size:19px;color:var(--theme)}
.logo img{width:34px;height:34px;object-fit:contain}
.main-nav{flex:1}.nav-list{display:flex;align-items:center;justify-content:center;gap:3px;padding:0;margin:0;list-style:none}
.nav-list>li{position:relative}.nav-link{display:block;padding:25px 13px;color:#303c51;font-size:15px;white-space:nowrap}
.nav-link:hover,.nav-link:focus-visible{color:var(--theme)}
.has-arrow:after{content:"⌄";font-size:12px;margin-left:6px;color:#8a95a6}
.dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%);background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease;z-index:30}
.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;pointer-events:auto}
.dropdown-panel{width:290px;padding:12px}
.drop-item{display:block;padding:10px 12px;border-radius:9px;font-size:14px}
.drop-item:hover{background:#f1f5fb;color:var(--theme)}
.mega-menu{width:650px;padding:22px}
.mega-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:26px}
.mega-title{margin:0 0 12px;color:var(--theme);font-size:14px;font-weight:800}
.mega-card{display:block;padding:9px 10px;border-radius:9px;margin:3px 0}
.mega-card:hover{background:#f3f6fb}
.mega-card strong{display:block;font-size:14px}.mega-card small{display:block;color:var(--muted);font-size:12px;line-height:1.5}
.mega-card img{display:inline-block;width:22px;height:22px;vertical-align:middle;margin-right:6px}
.meta{font-size:13px;color:var(--muted);margin:0 0 20px}
.mega-footer{display:inline-block;color:var(--theme);font-weight:700;font-size:13px;border-bottom:1px solid var(--theme);padding-bottom:2px}
.header-btns{display:flex;align-items:center;gap:9px;white-space:nowrap}
.member-btn{color:var(--theme);font-size:13px;font-weight:700}.account-btn{background:var(--theme);color:#fff;padding:8px 14px;border-radius:8px;font-size:13px}
.hamburger{display:none;width:42px;height:40px;border:0;background:transparent;cursor:pointer;padding:9px}
.hamburger span{display:block;height:2px;background:var(--theme);margin:5px 0;transition:.2s}
.drawer-overlay{position:fixed;inset:0;background:rgba(4,19,43,.45);opacity:0;visibility:hidden;z-index:50;transition:.2s}
.drawer-overlay.open{opacity:1;visibility:visible}
.mobile-drawer{position:fixed;top:0;right:-360px;width:min(360px,88vw);height:100vh;background:#fff;z-index:51;transition:right .25s ease;overflow:auto;box-shadow:-15px 0 35px rgba(0,0,0,.15)}
.mobile-drawer.open{right:0}
.drawer-head{height:72px;padding:0 20px;display:flex;align-items:center;gap:14px;border-bottom:1px solid var(--line);font-weight:800}
.drawer-head>a{margin-left:auto;color:var(--theme);font-size:14px}.drawer-close{border:0;background:transparent;font-size:29px;color:#778298;cursor:pointer}
.drawer-menu{padding:14px 20px 35px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 4px;border:0;border-bottom:1px solid #eef1f5;background:transparent;text-align:left;font:inherit;color:var(--ink);cursor:pointer}
.drawer-toggle:after{content:"＋";float:right;color:var(--theme)}.drawer-toggle.active:after{content:"－"}
.drawer-submenu{max-height:0;overflow:hidden;transition:max-height .25s ease;padding-left:14px}
.drawer-submenu.open{max-height:600px}
.drawer-submenu a{display:block;padding:8px 4px;color:var(--muted);font-size:14px}
.footer{margin-top:70px;background:#101c31;color:#d7e0ee;padding:50px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px}
.footer h3{margin:0 0 15px;color:#fff;font-size:16px}.footer p{margin:0;color:#aebbd0;font-size:13px}
.footer-grid>div>a{display:block;color:#aebbd0;font-size:13px;margin:5px 0}.footer-grid>div>a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:32px;padding-top:18px;color:#8e9db3;font-size:12px}
.category-page{padding:54px 0 0}
.category-intro{text-align:center;max-width:760px;margin:0 auto 38px}
.category-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.08em}
.category-kicker:before{content:"";width:24px;height:3px;background:var(--accent);border-radius:3px}
.category-intro h1{margin:10px 0 12px;font-size:clamp(30px,4vw,48px);line-height:1.2;color:#132b52}
.category-intro p{margin:0;color:var(--muted);font-size:16px}
.article-list{display:grid;gap:18px}
.article-card{display:grid;grid-template-columns:310px minmax(0,1fr);gap:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:0 7px 24px rgba(25,49,84,.04);transition:transform .2s,box-shadow .2s}
.article-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.article-cover{height:205px;overflow:hidden;border-radius:11px;background:#e9eef6}
.article-cover img{width:100%;height:100%;object-fit:cover}
.article-body{min-width:0;padding:5px 12px 5px 0}
.article-label{display:inline-block;padding:3px 9px;border-radius:20px;background:#eaf1ff;color:var(--theme);font-size:12px;font-weight:700}
.article-body h2{margin:10px 0 8px;font-size:23px;line-height:1.35;color:#152e56}
.article-body h2 a:hover{color:var(--theme)}
.article-summary{margin:0 0 12px;color:#687386;font-size:14px;display:block;min-height:2.8em}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 17px;color:#8a95a5;font-size:12px;margin-bottom:13px}
.article-tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:12px}
.article-tags span{color:#53637b;background:#f3f6fa;border-radius:5px;padding:2px 7px;font-size:12px}
.read-link{display:inline-flex;align-items:center;gap:5px;color:var(--theme);font-size:13px;font-weight:800}
.read-link:after{content:"→";font-size:17px}
.pagination{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:8px;margin:38px 0 5px}
.pagination a{min-width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:8px;background:#fff;color:#53637b;font-size:13px}
.pagination a:hover,.pagination a.active{background:var(--theme);color:#fff;border-color:var(--theme)}
@media(max-width:1050px){
 .main-nav{display:none}.header-inner{justify-content:space-between}.hamburger{display:block}
 .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:680px){
 .container{width:min(100% - 28px,1180px)}.topbar{height:auto;padding:8px 0}.topbar .container{align-items:flex-start;gap:4px;flex-direction:column}.top-contact{gap:12px}
 .logo{min-width:auto;font-size:17px}.member-btn{display:none}.account-btn{padding:7px 10px}
 .category-page{padding-top:34px}.category-intro h1{font-size:32px}.category-intro p{font-size:14px}
 .article-card{grid-template-columns:1fr;gap:13px;padding:11px}.article-cover{height:190px}.article-body{padding:0 5px 7px}.article-body h2{font-size:20px}
 .footer{margin-top:45px;padding-top:35px}.footer-grid{grid-template-columns:1fr 1fr;gap:25px 18px}.footer-grid>div:first-child{grid-column:1/-1}
}
@media(max-width:430px){
 .footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.article-cover{height:165px}
}