body{font-family:system-ui,sans-serif;margin:0;background:#f6f7f9;color:#1c1c1e}main{max-width:960px;margin:0 auto;padding:24px}nav{background:#111;padding:12px 24px;display:flex;gap:16px;align-items:center}nav,nav a{color:#fff}nav a{text-decoration:none}.card{background:#fff;border:1px solid #e3e5e8;border-radius:10px;padding:16px;margin:12px 0}button,input,select,textarea{font:inherit;padding:8px 10px;border:1px solid #ccc;border-radius:6px;margin:4px 0}input[type=email],input[type=password],input[type=text],textarea{width:100%;box-sizing:border-box}button{background:#111;color:#fff;cursor:pointer;border:0}