:root{--blue:#0072CE;--bg:#f6f8fb;--text:#0f172a;--muted:#475569;--card:#ffffff;--shadow:0 6px 24px rgba(0,0,0,.06);--radius:16px;}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text);}
.header{background:var(--blue);color:#fff;padding:16px 24px;font-size:18px;display:flex;gap:10px;align-items:center;justify-content:space-between}
.header .brand{font-weight:bold;}
.container{display:flex;min-height:calc(100vh - 64px)}
.nav{width:300px;background:#eef4fb;border-right:1px solid #e2e8f0;padding:16px;position:sticky;top:0;height:calc(100vh - 64px);overflow:auto}
.nav h3{margin:8px 0 12px 0;color:#0b3d91}
.nav a{display:block;padding:10px 12px;border-radius:10px;text-decoration:none;color:#102a43;margin-bottom:8px}
.nav a.active,.nav a:hover{background:#dfefff}
.content{flex:1;padding:24px}
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:16px;border:1px solid #e7edf5}
.badge{background:#e7f0fb;color:#0b3d91;padding:4px 10px;border-radius:999px;font-size:12px;display:inline-block}
.btn{background:var(--blue);color:#fff;border:none;border-radius:10px;padding:10px 14px;cursor:pointer;text-decoration:none;display:inline-block}
.btn.secondary{background:#0b3d91}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}
h1,h2{color:#0b3d91}
h1{font-size:24px}
h2{font-size:20px}
.footer{border-top:1px solid #e2e8f0;color:#64748b;padding:12px 24px;font-size:12px}
textarea{width:100%;min-height:120px;border:1px solid #e2e8f0;border-radius:10px;padding:10px}
.quiz .q{margin-bottom:12px}
.quiz label{display:block;margin:6px 0}
.hr{height:1px;background:#e2e8f0;margin:12px 0}
.drag-list{display:flex;gap:12px;flex-wrap:wrap}
.draggable{padding:8px 10px;background:#fff;border:1px dashed #a3bffa;border-radius:8px;cursor:grab}
.dropzone{min-height:80px;background:#f0f7ff;border:2px dashed #7aa2d2;border-radius:10px;padding:10px}
.kpi{display:flex;gap:18px;flex-wrap:wrap}
.kpi .tile{background:#fff;border:1px solid #e6eef8;border-radius:12px;padding:12px 14px;min-width:140px;text-align:center}
.note{color:var(--muted);font-size:13px}