:root{--primary:#6d5dfc;--accent:#14b8a6;--bg:#f5f7fb;--surface:#fff;--surface2:#f8fafc;--text:#172033;--muted:#697386;--border:#e8ebf2;--danger:#ef476f;--warning:#f59e0b;--success:#16a66a;--radius:18px;--font-scale:100%;--sidebar-w:264px;--shadow:0 12px 34px rgba(31,45,61,.08)}*{box-sizing:border-box}html{font-size:var(--font-scale)}body{margin:0;font-family:Tahoma,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);overflow-x:hidden}body.dark{--bg:#0d1220;--surface:#151c2d;--surface2:#1b2437;--text:#eef2ff;--muted:#9ba7bd;--border:#293449;--shadow:0 12px 34px rgba(0,0,0,.3)}button,input,select,textarea{font:inherit}button{cursor:pointer}.app-shell{min-height:100vh}.sidebar{position:fixed;right:0;top:0;bottom:0;width:var(--sidebar-w);background:linear-gradient(180deg,#17152b,#27204d 58%,#1f2c4d);color:#fff;padding:18px 14px;display:flex;flex-direction:column;z-index:40;transition:.25s}.sidebar.flat{background:var(--surface);color:var(--text);border-left:1px solid var(--border)}.sidebar.collapsed{--sidebar-w:84px}.sidebar.collapsed .brand-copy,.sidebar.collapsed .nav-item b,.sidebar.collapsed .side-user>div:nth-child(2),.sidebar.collapsed .nav-item i{display:none}.side-head{display:flex;align-items:center;gap:11px;padding:4px 4px 20px}.brand-mark{width:62px;height:62px;border-radius:20px;background:linear-gradient(135deg,var(--primary),var(--accent));display:grid;place-items:center;color:#fff;font-size:30px;font-weight:900;box-shadow:0 15px 30px color-mix(in srgb,var(--primary) 28%,transparent)}.brand-mark.small{width:42px;height:42px;border-radius:14px;font-size:21px;flex:none}.brand-copy{display:flex;flex-direction:column;min-width:0}.brand-copy b{font-size:18px}.brand-copy span{font-size:11px;color:#b8c0d8;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:145px}.side-head .icon-btn{margin-right:auto;color:inherit}.sidebar 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