:root{color-scheme:dark;--bg:#080f1b;--surface:#111b2d;--elev:#17253a;--line:#27364f;--text:#f3f6fc;--muted:#95a8c2;--blue:#63b3ff;--blue-deep:#1872cf;--green:#6ee7b7}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}button,input,select{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.app-shell{display:flex;min-height:100vh}.sidebar{width:256px;flex-shrink:0;background:#0d1726;border-right:1px solid var(--line);padding:25px 16px;display:flex;flex-direction:column;position:sticky;top:0;align-self:flex-start;height:100vh}.sidebar-brand{display:flex;align-items:center;gap:11px;padding:5px 8px 35px}.brand-icon{display:grid;place-items:center;width:47px;height:47px;background:linear-gradient(150deg,#5db3fa,#584ad6);border-radius:14px;font-weight:900;letter-spacing:-1px;box-shadow:0 8px 28px #2774c34d}.sidebar-brand 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