*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#000;color:#eee}.top-bar{display:flex;justify-content:space-between;align-items:center;padding:12px 24px;background:#16213e}.logo{font-size:16px;font-weight:700;letter-spacing:3px}.nav-right{display:flex;align-items:center;gap:12px}.avatar{width:32px;height:32px;border-radius:50%}.btn-login,.btn-logout{padding:6px 16px;border-radius:6px;cursor:pointer;text-decoration:none;font-size:14px}.btn-login{background:#e94560;color:#fff}.btn-logout{background:transparent;color:#aaa;border:1px solid #555}