*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#f5f5f5}#app{min-height:100vh}.header{background:#1a1a2e;color:#fff;padding:0 24px;height:56px;display:flex;align-items:center;justify-content:space-between}.logo{font-weight:700}.header nav{display:flex;align-items:center;gap:20px}.header a{color:#eee;text-decoration:none}.header a.router-link-active{color:#fff;font-weight:500}.btn-link{background:none;border:none;color:#eee;cursor:pointer;font-size:14px}.main{padding:24px;max-width:1400px;margin:0 auto}