:root{--primary: #0d6efd;--bg: #f5f7fb;--text: #1c1f2a;--panel: #ffffff;--muted: #6c757d}body{font-family:Segoe UI,Arial,sans-serif;color:var(--text);background:var(--bg)}.app-shell{min-height:100vh}.topbar{background:linear-gradient(120deg,#1b3a57,#2b6cb0);color:#fff;padding:12px 20px;display:flex;justify-content:space-between;align-items:center}.sidebar{background:var(--panel);border-right:1px solid #e5e7eb;min-height:calc(100vh - 56px);padding:16px}.content{padding:1px}.card-box{background:var(--panel);border-radius:12px;padding:20px;box-shadow:0 10px 30px #10182814}.menu-title{font-weight:600;margin-top:12px}.menu-item{cursor:pointer;color:var(--primary)}.menu-item:hover{text-decoration:underline}