:root{
  --navy:#0F2247; --navy-2:#16305C; --blue:#2A62E8; --orange:#F5A623;
  --bg:#F5F7FA; --card:#FFFFFF; --text:#1B2434; --muted:#6B7688; --border:#E6E9EF;
}
*{box-sizing:border-box;}
body{margin:0;font-family:'Inter',sans-serif;color:var(--text);background:var(--bg);}
a{text-decoration:none;color:inherit;}
img{max-width:100%;display:block;}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px;}
h1,h2,h3{margin:0;}

.topbar{background:var(--navy);color:#CBD5E8;font-size:13.5px;}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;padding:9px 24px;flex-wrap:wrap;gap:8px;}
.topbar-left{display:flex;gap:22px;flex-wrap:wrap;}
.topbar-left span{display:inline-flex;align-items:center;gap:6px;}
.topbar-right{display:flex;align-items:center;gap:16px;}
.topbar-right a{color:#CBD5E8;font-size:15px;}
.theme-toggle{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);border-radius:999px;width:26px;height:26px;color:#CBD5E8;cursor:pointer;font-size:12px;display:flex;align-items:center;justify-content:center;}

nav.mainnav{background:var(--navy-2);border-bottom:1px solid #22345c;}
.mainnav .wrap{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;flex-wrap:wrap;gap:14px;}
.brand{display:flex;align-items:center;gap:14px;}
.brand .mark{width:46px;height:46px;border-radius:10px;background:var(--blue);color:#fff;font-weight:700;font-size:16px;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.brand h1{color:#fff;font-size:18px;font-weight:700;}
.brand p{margin:2px 0 0;color:#9FB0CE;font-size:12.5px;}
.nav-right{display:flex;align-items:center;gap:22px;}
.navlinks{display:flex;gap:20px;list-style:none;margin:0;padding:0;flex-wrap:wrap;}
.navlinks a{color:#C6D2E8;font-size:13.5px;font-weight:600;letter-spacing:.02em;padding-bottom:4px;border-bottom:2px solid transparent;}
.navlinks a.active,.navlinks a:hover{color:#fff;border-color:var(--blue);}
.nav-search{color:#C6D2E8;font-size:15px;}
@media (max-width:900px){.navlinks{display:none;}}

.page-hero{background:linear-gradient(120deg,var(--navy),var(--navy-2));padding:48px 0;color:#fff;}
.page-hero h1{font-size:clamp(26px,4vw,38px);font-weight:800;}
.page-hero p{color:#C6D2E8;font-size:14.5px;margin-top:8px;max-width:640px;}
.back-link{color:#9FB0CE;font-size:13px;font-weight:600;display:inline-flex;align-items:center;gap:6px;margin-bottom:14px;}

section{padding:56px 0;}
.kicker-bar{border-left:4px solid var(--blue);padding-left:14px;display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.kicker-bar h3{font-size:20px;font-weight:700;}
.kicker-bar .viewall{font-size:12.5px;font-weight:600;color:var(--blue);display:flex;align-items:center;gap:4px;}
.link-more{font-size:13.5px;font-weight:600;color:var(--blue);display:inline-flex;align-items:center;gap:5px;margin-top:14px;}

.tl{position:relative;padding-left:20px;border-left:2px solid #D8E0EF;max-width:640px;}
.tl-item{position:relative;margin-bottom:26px;}
.tl-item::before{content:"";position:absolute;left:-25.5px;top:4px;width:11px;height:11px;border-radius:50%;background:var(--blue);border:2px solid #fff;box-shadow:0 0 0 2px var(--blue);}
.tl-item .yr{font-size:12.5px;font-weight:700;color:var(--blue);}
.tl-item h4{font-size:16px;font-weight:700;margin:2px 0 2px;}
.tl-item .loc{font-size:13.5px;color:var(--muted);}

.research-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.rcard{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px;}
.rcard .icon-box{width:42px;height:42px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:12px;color:#fff;}
.rcard h4{font-size:15px;font-weight:700;margin-bottom:6px;}
.rcard p{font-size:13px;color:var(--muted);margin:0;line-height:1.6;}

.grid-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.item-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px;display:flex;gap:14px;align-items:flex-start;}
.item-card.center{flex-direction:column;}
.item-card .thumb{width:100%;height:140px;border-radius:8px;overflow:hidden;background:var(--border);margin-bottom:12px;}
.item-card .icon-sq{width:40px;height:40px;border-radius:9px;background:#E9F0FF;color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;}
.item-card h4{font-size:15px;font-weight:700;line-height:1.4;margin-bottom:6px;}
.item-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.6;}
.item-card .tag{display:inline-block;margin-top:10px;background:#EAF0FE;color:var(--blue);font-size:11.5px;font-weight:700;padding:3px 10px;border-radius:6px;}
.item-card .date{font-size:12.5px;color:var(--muted);margin-top:6px;}
.empty-card{border:2px dashed #D8E0EF;border-radius:12px;padding:24px;display:flex;gap:14px;align-items:center;color:var(--muted);background:#FAFBFD;}
.empty-card i{font-size:20px;color:#B7C2D6;}
@media (max-width:760px){.grid-cards,.research-grid{grid-template-columns:1fr;}}

.blog-list{display:flex;flex-direction:column;gap:14px;}
.blog-row{display:grid;grid-template-columns:110px 1fr;gap:18px;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px;align-items:center;}
.blog-row .thumb{width:100%;height:80px;border-radius:8px;overflow:hidden;}
.blog-row h4{font-size:15px;font-weight:700;margin-bottom:4px;}
.blog-row p{font-size:13px;color:var(--muted);margin:0 0 6px;}
.blog-row .date{font-size:12px;color:var(--muted);}
@media (max-width:600px){.blog-row{grid-template-columns:1fr;}.blog-row .thumb{height:140px;}}

.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:14.5px;padding:12px 22px;border-radius:8px;cursor:pointer;border:2px solid transparent;}
.btn-primary{background:var(--blue);color:#fff;}
.btn-outline-dark{background:transparent;color:var(--navy);border-color:var(--navy);}

footer{background:var(--navy);color:#9FB0CE;padding-top:56px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.footer-brand .mark{width:34px;height:34px;border-radius:8px;background:var(--blue);color:#fff;font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center;}
.footer-brand strong{color:#fff;font-size:14px;}
.footer-col p{font-size:12.5px;line-height:1.7;color:#8FA0C2;margin:0 0 14px;}
.footer-col h5{color:#fff;font-size:13px;font-weight:700;margin-bottom:14px;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px;}
.footer-col ul a{font-size:12.5px;color:#8FA0C2;}
.footer-col ul a:hover{color:#fff;}
.newsletter-input{display:flex;gap:0;margin-top:8px;}
.newsletter-input input{flex:1;border:1px solid rgba(255,255,255,.15);background:rgba(255,255,255,.06);color:#fff;padding:9px 12px;border-radius:8px 0 0 8px;font-size:12.5px;}
.newsletter-input button{background:var(--blue);color:#fff;border:none;padding:9px 14px;border-radius:0 8px 8px 0;cursor:pointer;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;font-size:12px;color:#7C8DAE;}
.footer-bottom a{text-decoration:underline;}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;}}

.back-top{position:fixed;bottom:26px;right:26px;width:48px;height:48px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;box-shadow:0 8px 18px rgba(42,98,232,.4);border:none;cursor:pointer;z-index:40;}

:focus-visible{outline:3px solid var(--orange);outline-offset:2px;}